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Supplier : KRAUSS MAFFEI FRANCE
Série MultiForm- Bi-matières
Extraction of the catalog : Série MultiForm- Bi-matières
Combinations for adding value
Multinject Technology for Multicomponent Applications
in PartnersHiP WitH industrY
KraussMaffei is a premium partner for the plastics and rubber processing industries worldwide
Automotive
White Goods
Construction
Life Sciences
Electrical / Electronics
Whatever you aim to achieve in plastics or rubber processing, KraussMaffei is your partner. We are the only company with intensive expertise across the three main engineering fields. And we have a strong track record in integrating this expertise to develop new processes and systems.
ready for any challenge
complete extrusion lines is used in many industries, including chemicals, pharmaceuticals, automotive, construction, furniture and packaging.
People for Plastics
We are the "people for plastics". We are your partners from the first exploratory discussion, through development to commissioning, servicing and operating your system, and final disposal. At all times, you are assured of outstanding competence in planning and engineering, as well as reliable and fast spare parts, service and support.
adding value for customers
Our Injection Molding Machinery Division supplies machinery and systems from 35 to 4,000 tonnes for standard applications and for all processing variants, together with fully automated solutions. We have a strong customer base in all the relevant industries worldwide. Our Reaction Process Machinery Division supplies machines and complete systems for processing polyurethanes and other reactive materials. Completing our product portfolio, Automotive Component Systems supplies foam molds, cutters and routers. Our customer base is wide, with a focus on the automotive, construction and white appliances industries. Our Extrusion Technology Division supplies machinery and systems for compounding, for pipe, profile and sheet extrusion, physical foaming, and the production of technical rubbers and intermediates for tire production. Machinery from the company's range from single extruders to
We put our expertise to work for your success. With machine ranges engineered for modularity, we can deliver application-specific solutions based on our wide range of standard modules and specially engineered solutions. This strategy offers customers technical and cost advantages.
Close to customers around the world
As an international company, KraussMaffei has a presence in all the major markets for the plastics and rubber processing industries and employs around 3,000 people worldwide. Our sales and service network keeps us close to all our customers around the world.
Multinject is the KraussMaffei technology for producing composite parts from thermoplastics, polyurethanes and elastomers.
Packaging
KraussMaffei Multinject technology, which dates back to 1963, is a seamless range of portfolio solutions for multicomponent applications. The products are offered as complete packages including mold technology and process expertise. However, they have one thing in common: they are composed of individual components in perfect harmony with each other.
overvieW of ProCesses
The shape dictates the process
The end product alone dictates which process is chosen for transforming the raw materials into a multicomponent part. There are almost as many combinations as there are materials. The right combination of materials and mold technology holds the key to the overall system solution. KraussMaffei has a comprehensive catalogue from which it assembles such solutions.
With Multinject, a large number of injection molding variants is possible, such as molding of movable parts, sandwich and composite injection molding. Basically, two or more polymers are combined to form a multifunctional or multicolour part in a single injection molding operation. The goal can be to obtain special colour effects or a combination of different material properties. Various mold technologies can be used for this: including sandwich, splitting slide, sliding table and turntable, swivel, index and transfer.
the shape dictates the process
0 degrees of design freedom: Substrate does not have to be exposed Example: Handles for a refrigerator door
1 degree of design freedom: Substrate has to be partially exposed Example: Caps for shampoo bottles
Sandwich process Cavity separations process Sliding-table and turntable process Swivel process Index process Transfer process -
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e.g. Handles for a refrigerator door Page 4
e.g. Caps for shampoo bottles
Multinject Technology for Multicomponent Applications
multinject systems can be adapted to existing mold technology and infrastructure.
Second injection unit in V (vertical) position
Second injection unit in Z (piggyback) position
Second unit on the non-operator side (L position)
Second injection unit behind the moving platen (W position)
2 degrees of design freedom: Substrate exposed on one side Example: Automotive rear lamp cluster
3 degrees of design freedom: Substrate exposed on two sides Example: Handles for DIY enthusiasts
4 degrees of design freedom: Second component partially exposed on both sides of the substrate Example: Baby bottle teats in the life sciences sector
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e.g. Automotive rear lamp cluster Overview of the procedures
e.g. Handles for DIY enthusiasts
e.g. Baby bottle teats in the life science sector Page 5
teCHnologY in detail
The sandwich process
In sandwich molding, the cavity is partially filled with component 1 to form the outer shell. Material 2 the core material is then injected into component 1. Sandwich molding lends itself to two-component applications comprising an outer and an inner component. This is equivalent to 0 degrees of design freedom (see Table on page
Injection of outer component = skin.
4/5). The outer component serves mostly as a high-quality skin while the internal component is frequently a reinforced material or recyclate.
solution: adapter platens for more flexibility
For small-to-medium machines, KraussMaffei uses an adapter platen called a sandwich platen. The platen controls the flow of melt and is mounted onto the fixed platen. The molds are mostly conventional cold runner types and the melt streams are injected
Injection of core material into component 1.
either sequentially or simultaneously. Nozzles 1 and 2 can be alternated to create a marbling effect.
sandwich nozzle for large shot weights
KraussMaffei has developed a sandwich nozzle for use on large machines. In this head, the secondary plasticising unit is piggybacked onto the main one. Apart from standard sandwich molding, this arrangement lends itself to one-component applications. The primary and secondary plasticising units, whose shots can differ considerably in weight, can be used
Finished molding in cross-section.
for single-component applications, both together and separately.
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Multinject Technology for Multicomponent Applications
The sandwich nozzle permits both injection units to be used for single-component applications as well.
the benefits of the sandwich process at a glance:
· · · · ·
Existing 2-component machines can be readily retrofitted with the adapted sandwich platen. The sandwich platens can be used for all configurations of the 2nd unit (Z, L, and V positions). Savings on material costs because inexpensive fillers used. Standard cold-runner molds can be used. The sandwich nozzle is versatile enough to be used for single-component applications.
Y-junctions can be made by sandwich molding a judicious combination of polyamide and polypropylene in conjunction with water-injection. The inner polypropylene layer is chemically resistant, while the polyamide provides rigidity and thermal stability.
Technology in detail
Page 7
teCHnologY in detail
Cavity separation process
In the cavity separation process, component 1 is injected into the cavity, part of which is blocked with a slide or slide valve, and allowed to cool.
Injection of component 1.
The slide is then pulled back so that the rest of the cavity can be injected with component 2. The mold usually remains closed for this operation. The components are injected sequentially. The cavity separation method is suitable for parts having 1 degree of design freedom. The molds are compact and inexpensive.
solution: Programmable core pulls
Component 2 is gated in such a way that the
Pulling back of slide.
substrate does not have to be transferred or rotated. The programmable core pulls with standardised interface allow the slides to be flexibly programmed and moved according to the settings with the MC5 control. The touchscreen variant of the MC5 control offers the user interface to be configured so as to show only the functions needed. This prevents programming errors relating to the core pulls. and affords a simple way of assigning the slide function to each core pull.
Injection of component 2.
Overall view of finished part.
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Multinject Technology for Multicomponent Applications
Compact unit for producing wind deflectors, featuring a cavity separation mold and handling robot
advantages of the cavity separation process at a glance:
· Component 1 remains in the cavity and thus provides an
optimal seal against component 2.
· Space-saving production, since the mold is not transferred or rotated. · Versatile, simple programming of the core-pull functions
using the tried-and-tested MC5 control.
Wind deflector with integrated gasket made by the cavity separation process
Technology in detail
Page 9
teCHnologY in detail
The turntable process
In the turntable method, component 1 is injected, the mold opens, the mold half on the moving mold is rotated and then closed. Component 2 is then injected. At the same time, component 1 is
Injection of component 1.
injected. Ejection occurs after rotation. The number of rotations depends on the part, and may involve two (0° - 180° - 0°), three (0° - 120° - 240° - 360°) or four (0° - 90° - 180° - 270° - 360°) rotations. The turntable process lends itself to parts having 1 or 2 degrees of design freedom and is the most widely used multicomponent process.
Rotation of moving mold half on turntable.
solution: turntables with capacities that set standards
KraussMaffei uses either add-on (for clamp forces from 650 to 2000 kN) or integrated (>2000 kN) turntables. Servo motors for rotating the molds are fitted as standard. The servo motors offer high movement precision combined with high dynamics. They operate independently of the hydraulics and so rotation can take place while the mold is opening. The turntables are centrally lubricated and their mounts are designed for heavy molds.
Simultaneous injection of component 2 and component 1.
Overall view of the finished part.
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Multinject Technology for Multicomponent Applications
Turntables from KraussMaffei are notable for their rugged mechanics and generous fluid circuits.
generous number of fluid lines
Add-on KraussMaffei turntables have provision for up to six water and oil circuits (6 inlets and 6 outlets). These circuits can be configured for water and oil circuits. Integrated turntables have provision for 8 fluid circuits 6 for water and 2 for the hydraulics. This is enough capacity for even those applications which require intensive cooling.
the advantages of the turntable process at a glance:
· Component 1 remains in the cavity and thus provides an optimal seal against component 2. · KraussMaffei turntables require virtually no maintenance due to ther rugged mechanics and
automated centralised lubrication system.
· Effective mold cooling, with provision for up to 8 fluid circuits (16 connections). · Short cycles, thanks to the high dynamics of the rotating unit and the synchronous
movement of the turntable.
Housing of any type, like e.g. for power tools are a typical example of use for the turntable technique.
Technology in detail
Page 11
teCHnologY in detail
The sliding-table process
Injection of component 1, and then movement of the core side to cavity 2.
In the sliding-table process, the mold consists of a core side and two cavity sides, with one component forming the contour for the second. After the 1st component has been injected, the mold opens and the core side is pushed onto the 2nd cavity surface. The mold is closed and component 2 is injected. Materials 1 and 2 are injected sequentially. Like its turntable counterpart, the sliding table method is suitable for parts with the first or second degree design. The sliding-table process is mostly used for small runs, e.g. for prototype molds or small batches. Sliding-table technology is simple compared with the turntable process. Since the steps are performed sequentially, the cycle time is longer than in turntable applications.
Injection of component 2.
solution: flexible mold control
The sliding mechanism is integrated into the mold. The machines are accessorised from the extensive catalogues of the CX and MX series. Like the cavity separation, the sliding table is moved by core pulls which can be programmed on the tried-and-tested MC5 control.
Overall view of the finished part.
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Multinject Technology for Multicomponent Applications
Production of seatbelt covers by a combination of SkinForm and sliding-table processes
the advantages of the sliding-table process at a glance:
· Component 1 remains in the cavity and thus provides an optimal seal against component 2. · Capital investment in mold technology lower than for the turntable process. · Unrestricted cooling of both mold halves, as for 1-component applications,
since the mold does not rotate.
· Simple and precise process control because the MC5 control unit is clearly structured.
Seatbelt covers - produced by process integration of sliding table and SkinForm methods with colour change from shot to shot (see p. 26/27)
Technology in detail
Page 13
teCHnologY in detail
The SpinForm process
In the SpinForm process, the two parting lines are arranged one behind the other. The injection units face each other in the machine axis. In the central part is a turntable called a spinning unit. The swivel unit rotates about the vertical machine axis. The substrates are injected and remain attached to the core of spinning unit when the mold opens.
Close mold, Injection of component 1.
The swivel unit rotates through 180°, the substrates are rotated into a new cavity and are overmolded with component 2. Like the turntable process, SpinForm is suitable for parts having 1 or 2 degrees of design freedom. The SpinForm method is ideal for panel-like parts or or applications with high numbers of cavities.
solution: Kraussmaffei swivel unit sets standards
Generously dimensioned for high performance: The swivel units are mounted on a sliding table,
Opening of mold and rotation of swivel unit. Closing of mold.
which is moved on the machine base. This allows heavy molds to be accommodated and optimum use to be made of the vertical daylight in the mold design. All swivel units, like turntables, come with servo motors and are centrally lubricated. The fluids are fed from below via the rotary distributor integrated in the machine base. This concept provides room for generously sized fluid circuits with hoses up to 2 inches in diameter.
Injection of component 2. Simultaneous injection of component 1 for the next part. Finished part is ejected
Open for everything: Optimal accessibility from the side means that robots and peripherals can be readily attached. Thus, while injection is occurring, it is possible to perform interim steps, such as placing inserts, pretreating the substrate and removing parts from the side. This is accomplished with cube-stack molds having 4 mold parts on the swivel unit.
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Multinject Technology for Multicomponent Applications
The SpinForm process offers twice the production capacity of standard turntable applications.
No stresses in the part: Panel-like parts are often compression molded to reduce stresses and achieve longer flow paths. Standardised processes, such as expansion compression, DecoForm, and glazing can be integrated into any SpinForm machine.
Cleanliness Guaranteed success in the future: SpinForm machines can be used in cleanrooms due to their two-platen technology. Special adjustments made to the hydraulics minimise air turbulence and temperature fluctuations. The housing concept use for the clasp facilitates easy definition of the cleanroom.
advantages of the Kraussmaffei spinform process at a glance:
· Twice the production capacity for the same machine size. · Greater, improved cooling capacity due to generously dimensioned rotary
distributors of reference standard.
· No limitations on panel-like parts, since rotation between the tiebars is possible. · Suitable for cleanrooms due to lubricant-free clamp and two-platen design. · Compression molding can be simply integrated in sequential steps.
Car sunroof with integrated assembly elements produced by the SpinForm process. KraussMaffei partners of the pioneers for panel-like glazing.
Technology in detail
Page 15
teCHnologY in detail
The index process
In the index process, part of the contour of component 1 is located on an indexing platen. After injection, the index platen, along with the substrate, is pushed out of the mold half by the ejector system and turns through 90°/120°/180°.
Injection of component 1.
Afterwards, the substrate is placed on the core of component 2 as the index platen retracts. At least part of the substrate is now overmolded from both sides with component 2. The index process lends itself to parts having 3 degrees of design freedom and entails having to lift the substrate. This is not possible with a turntable. Traditional index process: In the traditional process, the index shaft and drive form part of the mold. The disadvantages are the higher mold costs and associated larger mold extensions.
Lifting, turning and renewed pull-back of the index platen.
solution: intelligent machine technology for reduced mold costs
KraussMaffei is tackling the disadvantages of the traditional index process by offering production cells with index drive and/or index shaft on the machine side. The two-platten clamp design offers adequate space for the index-drive motor. This
Injection of component 2. Simultaneous injection of the next substrate.
is mounted behind the ejector plate. The drive is a servo motor and thus operates independently of the hydraulics. The KraussMaffei index shaft features four water circuits and the hoses are connected up via a separate energy chain.
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Multinject Technology for Multicomponent Applications
Space-saving positioning of the index drive unit behind the ejector.
Simple interface for molds with integrated index shaft.
High availability due to fast set-up times: The interface to the mold forms a fluid and torque transfer point to the moving platen. The molds can be smaller, because no index shaft is needed.
Mold investment costs are reduced, because the molds can share a common drive and shaft. Mold changing and maintenance work are thus simpler and faster to carry out.
advantages of the Kraussmaffei index process at a glance:
· The drive technology is a unique part of the machine. Follow-up costs for
molds are significantly reduced.
· Improved access and rapid mold changing thanks to the simple interface. · Effective cooling of the part due to 4 cooling circuits. · Short cycle times achieved through optimised rotational speed of the index
shaft in parallel to the mold movement.
Applications for the index process include automotive ventilation flaps with integrated seal.
Technology in detail
Page 17
teCHnologY in detail
The transfer process
In the transfer process, the substrate is injected and then transferred by a robot to a new cavity or to a different injection molding machine. The transfer method is the most flexible multi-component method and is suitable for components of the 4th
Injection of component 1.
Such parts necessitate complete removal of the substrate from the first cavity. Transfer from one machine to the other is common for thermoplastic/rubber composite parts as it is a simple way to thermally separate the two components.
solution: machines and robots form a single unit
Transfer of the substrate to a new cavity.
KraussMaffei uses its own LR and LRX series robots for the transfer tasks. Robot solutions from KraussMaffei have been on the market for more than 25 years and are renowned for their precision reproducibility at high speeds. They boast rugged mechanics and high-performance servo drives. The outcome is rapid closing movements and accurate part insertion without the usual axle vibration, even when travel is fast. With KraussMaffei machine technology, the strengths of robotic solutions are exploited to the full.
Injection of component 2. Simultaneous injection of the next substrate.
Overall view of the finished part.
Page 18
Multinject Technology for Multicomponent Applications
Production of a substrate on injection molding machine 1, removal by robot, temporary storage and insertion by robot into injection molding machine 2 for overmolding with component 2.
fast thanks to modern bus technology
The robots' absolute position-sensing system of the robots, already a standard feature, ensures maximum accuracy. The shared control unit minimises interfaces and avoids operator errors. CE compliance is a standard feature of the systems and shows that we actually do believe in "machine and robot acting as a unit".
Rapid VARAN bus technology coupled with the MC5 control unit in a master-slave arrangement ensures high-resolution signal processing and thus extraordinary precision cycle after cycle. The operating concept is intuitive to learn and allows fast and easy programming.
advantages of the transfer process at a glance:
· Use of two existing 1-component machines as a multicomponent production cell. · All conventional multicomponent applications can be realized regardless of the degree of design freedom.
· Combination of process engineering expertise and production system featuring robots. · High-precision transfer with VARAN bus control · No hot-cold separation in the mold needed in the case of For thermoplastic/rubber composites.
Perfume bottle caps exemplify the transfer process.
Technology in detail
Page 19
detailed ProduCt information
Sample machine configurations for the CX series
KraussMaffei two-platen injection molding machines are highly versatile as regards the position of the other injection units. Ready accessibility from all sides allows the units for the second component to be freely configured to fit in with existing infrastructure and mold technology.
vertical arrangement of the second injection unit (v position)
CX-V machines offer good accessibility to the main injection unit. The V-unit can be moved completely out of the clamp zone to afford unimpeded access to the mold zone. Molds can therefore be changed quickly and easily.
Vertical arrangement of the second injection unit (V position)
Piggyback arrangement of the second injection unit (z position)
The Z configuration extracts the most from the two-platen technology. The second unit adds very little extra height to the machine. The machine is extremely compact. CX-Z series machines are ideal for cleanroom applications, especially when combined with cantilevered clamps for small clamp forces.
Piggyback arrangement of the second injection unit: vertical (Z position)
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Multinject Technology for Multicomponent Applications
lateral arrangement of the second injection unit (l position)
The compact two-platen principle and the slim design of the KraussMaffei CX series allow L-units to be positioned very close to the machine. The footprint is not increased unnecessarily. The KM CX-L X-Form is a good example of the high performance you can expect (see pages 24, 25). All essential valueadding steps are implemented on a system with a footprint of 24 m².
An Injection Molding Compounder with horizontally arranged second injection unit, perpendicular to the machine axis (L position)
Horizontal arrangement of the second injection unit (w position)
Machines utilising SpinForm technology make optimum use of the clamp force. CX and MX machine base series are extremely rugged. They support solid swivel units. This combination is a stable base for heavy multi-cavity molds and is designed for high productivity.
Horizontal arrangement of the second injection unit in the machine axis (CX-WEN)
Page 21
Compact multicomponent injection molding cells based on the CX-Z series.
CX maCHines
KraussMaffei Multinject based on the CX series, with clamp forces from 600 to 6500 kN
The CX series are all-hydraulic machines that feature two-platen clamp units for small to medium clamp sizes. Generally, the CX series lends itself to any standard multicomponent application. The two-platen clamp design yields a compact machine series. Even though the 2nd injection unit may be chosen freely, the footprint is barely increased. The production cells are always compact.
advantages at a glance:
The CX module platform for the Multinject process possess a number of advantages for efficient production of multicomponent applications:
· Expanded mold platens as standard for projecting molds · The CX series is rugged enough to accommodate heavy molds. Regardless of the
turntable technology, up to 2/3rds of the total weight can be installed on the moving platen.
· Large ejector strokes possible thanks to two-platen clamp · Fast mold changing due to easy accessibility in the ejector zone · Ease of use is a standard feature of the Multinject systems Already included are:
pV control, adjustable nozzle contact force etc
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Multinject Technology for Multicomponent Applications
No restrictions on combinations of as regards positioning of the injection units. KraussMaffei has already implemented various MX systems in multicomponent technology featuring up to seven injection units.
mX series
KraussMaffei Multinject based on the MX series, with clamp forces from 8000 to 40,000 kN
The MX series of all-hydraulic machines feature two-platen clamp units for medium to large clamp sizes. The MX series is a rugged, dependable solution for multicomponent technology. The moving platen has been engineered as a box structure with solid metal ribs. During travel, large, solid sliding shoes ensure absolute platen parallelism. Even under clamping force, the platens will not deform. Heavy multicomponent molds can thus be operated safely.
advantages at a glance:
The MX series for the Multinject process has a number of advantages that enable you to make multicomponent products efficiently:
· Integrated turntables with generous cooling water capacity for the operation of
high-speed multi-component applications.
· Robust swivel units with unimpeded water distribution for heavy and complex SpinForm molds. · Simple integration of compression processes thanks to high platen parallelism and
extensive compression functions and strokes.
· Many variants, with configurations for up to 7 injection units.
Technology in detail
Page 23
multiComPonents of tHe neXt generation
Compact high-tech: The CX X-Form
With its two-platen technology and good allround access, the CX series is ideal for integrating complex peripherals into tight spaces. One outstanding example is the X-Form process, which is based on a CX machine. The X-Form is a multicomponent process incorporating all three of KraussMaffei's core competences.
space to expand
A CX injection molding compounder produces vibration dampers from X-Flex material. CX machines ensure good all-round access to the injection unit and clamp, with ample space for bolt-on units, like the second injection unit required here.
easy integration of components and handling robots
Generous daylight between the tiebars and free space behind the ejector make it easy to integrate turntables or sliding tables in the molds. This system illustrates how it's possible to integrate all key production steps in the smallest possible space. A handling robot, that makes maximum use of the free space above the machine, can be installed without problems. It is even possible to plan a product drop zone beyond the moving platen inside the machine housing with the clamp closed. This system illustrates how it is possible to integrate all key production steps in the smallest possible space.
What is X-form? Where are the economic benefits of switching to an X-form process?
The X-Form process makes it possible to produce parts which include the elasticity and high resilience of natural rubber and other elastomers. The innovative crosslinking process, in a single manufacturing cell, combines extrusion, injection molding and a reaction process. A specially developed thermoplastic polyurethane (TPU; X-Flex from Elastogran) crosslinks to form TPU-X in the reaction stage.
Page 24
KM 300-1400 CX IMC X-Form. 24 m2 is all it takes to integrate all key value-adding steps in this system for producing substitutes for metal/rubber composites.
The X-Form process opens the way for substantial cost savings in producing high-quality parts that combine rigid and flexible materials. The thermoplastic/X-Form composites are an attractive alternative to metal/rubber composites. By integrating the injection molding compounder inti the multicomponent molding process, KraussMaffei is opening up new opportunities and new market prospects.
An X-Form product weighs around 40% less than a equivalent steel product, the quality is much better, and unit manufacturing costs are lower thanks to the very fast cycle times. Potential applications for X-Form composites include valve covers and other covers with integrated seals, motor mountings, vibration absorbers and substitution of other metal/ rubber composite parts.
Page 25
multiComPonents of tHe neXt generation
SkinForm method
The term skin form is a KraussMaffei technology for the production of multi-component parts through a combination of "injection molding" and "reaction processing". The first cycle consists in making a thermoplastic support whose surface is then partly or completely flooded with polyurethane.
Integrating different production stages in one machine and in a one-shot process, it is possible to produce parts with new functionality. Savings can thus be made on expensive post-processing and assembly. All these factors make SkinForm a system well worth looking at for your business. Thanks to good side access, downstream automated
SkinForm is an innovative process that very cleverly combines the benefits of injection molding and polyurethane processing. It is a one-shot process for producing complex composite parts that combine a thermoplastic and a polyurethane. The surface is enhanced by one-shot reaction molding. In the automotive industry, high-grade PUR materials can be used to add value to the surfaces of molded parts. These are deceptively like leather in looks, feel and scratch resistance. PUR opens up a huge range of applications from high-value paint systems to foam systems for softtouch effects, acoustic or damping properties across all kinds of sectors.
systems can be attached without difficulty. The SkinForm process from KraussMaffei underlines KraussMaffei's position as a technological leader and is perfect evidence of our ability to act as a systems company: not only do the injection molding machine, PUR systems and the process come from us, but we also supply the molds, robots and downstream equipment. A single-source solution for next-generation multicomponent applications.
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Multinject Technology for Multicomponent Applications
SkinForm combines the advantages of KraussMaffei multicomponent technology with the technical advantages of our proprietary PUR systems.
New departures with SkinForm: multicoloured door panels. In a single cycle, three PUR sections are finished to perfection in three different colours.
Deceptive touch and scratch resistance combined with good damping properties: SkinForm handles for hammer drills.
Trends for Multinject
Seite 27
KraussMaffei Multinject solutions are turning multicomponent injection molding into a manageable standard
Customer benefits
Multinject Added value through economic multicomponent injection molding
Thanks to our customers, KraussMaffei has repeatedly demonstrated its innovation prowess in multicomponent injection molding since 1963. It is thanks to our customers that we can repeatedly bring our expertise to bear on sophisticated solutions and/or to further expand them with exclusive multiprocess technologies. This gives you security. - The security of efficient production cells at reference level for low-cost Partnering with KraussMaffei can cut the cost of parts production. And reward you with decisive competitive advantages whether through cost-effective, high-performance production cells and/or using new processes. production of multicomponent applications whether standard or specialised yesterday, today and tomorrow.
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Multinject Technology for Multicomponent Applications
KraussMaffei supplies efficient production equipment based on multicomponent technology from a single source
Kraussmaffei multinject benefits at a glance:
· Complete portfolio of efficient system solutions for multicomponent technology. · Comprehensive engineering and process expertise provides reassurance about
the design of your applications and accelerates their implementation in production cells.
· Rugged, modular machine technology with an extensive options catalogue makes
multicomponent injection molding step-by-step into a manageable standard.
· Standardised control unit with intuitive user interface for easy programming
of complex multicomponent processes.
· Different application possibilities for composites made from plastics and various application
areas, such as color changing, hard and soft composites and/or novel combinations with elastomers, rubber or polyurethane thanks to synergies from the combined areas of extrusion, injection molding and reaction technology offer potential for new applications.
Costumer benefits
Page 29
serviCe WorldWide
Service, support and spare parts when you need them, where you need them
Rely on us for a fast and competent response to all your service needs anywhere in the world. Whatever you need from troubleshooting and training to spares or repairs we're on the job. We're dedicated to supplying service quality on a par with the outstanding quality of our machines and systems. We offer far more than spare parts and hotlines. We'll work with you to choose the best and most cost-effective solution for your operation. We'll help you test new applications and we'll plan customized service packages.
all-round service training with high hands-on content Customer trials and prototyping in our test lab
The Injection Molding Division operates a test lab fitted with the latest machinery and equipment. We can run trials, produce prototype parts and fine-tune processes on your behalf. We can work with you to test and evaluate processes, machines and equipment in order to identify the best approach for a particular project. Our highlyqualified application engineers are there to help you.
Courses are held in our lab and training centre, or, optionally, on your premises. We offer clearly-structured basic and advanced training in operation, process control and maintenance for KraussMaffei injection molding machinery. On request, we'll plan and hold special courses on topics of your choice. All participants spend a high proportion of their training working hands-on with original KraussMaffei machines. A well-structured training program produces skilled operators and technicians, which will positively impact your up-time and productivity.
Contact for training: Rupert Gruber Phone: +49 89 8899-3613 Fax: +49 89 8899-4173 rupert.gruber@kraussmaffei.com
Our service offering is broad. We'll configure your system, install and commission it, train your staff, plan measures to minimize your downtime risk and maximize productivity, and carry out maintenance, repairs and upgrades. You'll find us fast, reliable and competent. Our hotline is manned by highlytrained and experienced service technicians. If necessary, we'll get a technician to you quickly. Remote diagnosis, interfacing directly with your machine's control system, can be a practical alternative. Spares for all important wear parts are available at short notice. We're continuously expanding our service network to speed up spare parts shipment. Talk to us about the right service solution for your business.
At your service worldwide
Team Europe Injection Molding Service Team Email: service-imm.europe@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.europe@kraussmaffei.com
Team America/Spain Injection Molding Service Team Email: service-imm.america@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.america@kraussmaffei.com
Team Asia/ Near East Injection Molding Service Team Email: service-imm.asia@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.asia@kraussmaffei.com
How to contact us
Apart from email you can contact us on the service hotline or by post at this address:
Hotline Phone: +49 89 8899-0 Fax: +49 89 8899-2206 injection molding service KraussMaffei Technologies GmbH Krauss-Maffei-Str. 2 80997 Munich Germany
KraussMaffei is a premium partner for the plastics and rubber processing industries worldwide. KraussMaffei machines and systems are used wherever plastics and rubber are converted into products. As a knowledge-driven technology company, we build on many decades of experience and a strong commitment to research and development.
KraussMaffei offers with the Multinject technology a continuous Portfolio of solutions for the implementation of applications of multicomponents. The power spectrum covers complete packages - including tool technology and process know-how. All these possibilities have one together: perfect the interaction of the individual system components and procedures. In this way the KraussMaffei Multinject solutions multicomponent injection molding makes a controllable standard.
Kraussmaffei technologies gmbH
Krauss-Maffei-Strasse 2 ··· 80997 Munich Phone +49 89 8899-0 ··· Fax +49 89 8899 - 2206 www.kraussmaffei.com
1.0 WE . 3rd edition 05/10 . SGM 019 B PRO 11/2008 GB ··· KraussMaffei reserves the right to make technical changes ··· Printed in Federal Republic of Germany.
Multinject Technology for Multicomponent Applications
in PartnersHiP WitH industrY
KraussMaffei is a premium partner for the plastics and rubber processing industries worldwide
Automotive
White Goods
Construction
Life Sciences
Electrical / Electronics
Whatever you aim to achieve in plastics or rubber processing, KraussMaffei is your partner. We are the only company with intensive expertise across the three main engineering fields. And we have a strong track record in integrating this expertise to develop new processes and systems.
ready for any challenge
complete extrusion lines is used in many industries, including chemicals, pharmaceuticals, automotive, construction, furniture and packaging.
People for Plastics
We are the "people for plastics". We are your partners from the first exploratory discussion, through development to commissioning, servicing and operating your system, and final disposal. At all times, you are assured of outstanding competence in planning and engineering, as well as reliable and fast spare parts, service and support.
adding value for customers
Our Injection Molding Machinery Division supplies machinery and systems from 35 to 4,000 tonnes for standard applications and for all processing variants, together with fully automated solutions. We have a strong customer base in all the relevant industries worldwide. Our Reaction Process Machinery Division supplies machines and complete systems for processing polyurethanes and other reactive materials. Completing our product portfolio, Automotive Component Systems supplies foam molds, cutters and routers. Our customer base is wide, with a focus on the automotive, construction and white appliances industries. Our Extrusion Technology Division supplies machinery and systems for compounding, for pipe, profile and sheet extrusion, physical foaming, and the production of technical rubbers and intermediates for tire production. Machinery from the company's range from single extruders to
We put our expertise to work for your success. With machine ranges engineered for modularity, we can deliver application-specific solutions based on our wide range of standard modules and specially engineered solutions. This strategy offers customers technical and cost advantages.
Close to customers around the world
As an international company, KraussMaffei has a presence in all the major markets for the plastics and rubber processing industries and employs around 3,000 people worldwide. Our sales and service network keeps us close to all our customers around the world.
Multinject is the KraussMaffei technology for producing composite parts from thermoplastics, polyurethanes and elastomers.
Packaging
KraussMaffei Multinject technology, which dates back to 1963, is a seamless range of portfolio solutions for multicomponent applications. The products are offered as complete packages including mold technology and process expertise. However, they have one thing in common: they are composed of individual components in perfect harmony with each other.
overvieW of ProCesses
The shape dictates the process
The end product alone dictates which process is chosen for transforming the raw materials into a multicomponent part. There are almost as many combinations as there are materials. The right combination of materials and mold technology holds the key to the overall system solution. KraussMaffei has a comprehensive catalogue from which it assembles such solutions.
With Multinject, a large number of injection molding variants is possible, such as molding of movable parts, sandwich and composite injection molding. Basically, two or more polymers are combined to form a multifunctional or multicolour part in a single injection molding operation. The goal can be to obtain special colour effects or a combination of different material properties. Various mold technologies can be used for this: including sandwich, splitting slide, sliding table and turntable, swivel, index and transfer.
the shape dictates the process
0 degrees of design freedom: Substrate does not have to be exposed Example: Handles for a refrigerator door
1 degree of design freedom: Substrate has to be partially exposed Example: Caps for shampoo bottles
Sandwich process Cavity separations process Sliding-table and turntable process Swivel process Index process Transfer process -
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e.g. Handles for a refrigerator door Page 4
e.g. Caps for shampoo bottles
Multinject Technology for Multicomponent Applications
multinject systems can be adapted to existing mold technology and infrastructure.
Second injection unit in V (vertical) position
Second injection unit in Z (piggyback) position
Second unit on the non-operator side (L position)
Second injection unit behind the moving platen (W position)
2 degrees of design freedom: Substrate exposed on one side Example: Automotive rear lamp cluster
3 degrees of design freedom: Substrate exposed on two sides Example: Handles for DIY enthusiasts
4 degrees of design freedom: Second component partially exposed on both sides of the substrate Example: Baby bottle teats in the life sciences sector
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e.g. Automotive rear lamp cluster Overview of the procedures
e.g. Handles for DIY enthusiasts
e.g. Baby bottle teats in the life science sector Page 5
teCHnologY in detail
The sandwich process
In sandwich molding, the cavity is partially filled with component 1 to form the outer shell. Material 2 the core material is then injected into component 1. Sandwich molding lends itself to two-component applications comprising an outer and an inner component. This is equivalent to 0 degrees of design freedom (see Table on page
Injection of outer component = skin.
4/5). The outer component serves mostly as a high-quality skin while the internal component is frequently a reinforced material or recyclate.
solution: adapter platens for more flexibility
For small-to-medium machines, KraussMaffei uses an adapter platen called a sandwich platen. The platen controls the flow of melt and is mounted onto the fixed platen. The molds are mostly conventional cold runner types and the melt streams are injected
Injection of core material into component 1.
either sequentially or simultaneously. Nozzles 1 and 2 can be alternated to create a marbling effect.
sandwich nozzle for large shot weights
KraussMaffei has developed a sandwich nozzle for use on large machines. In this head, the secondary plasticising unit is piggybacked onto the main one. Apart from standard sandwich molding, this arrangement lends itself to one-component applications. The primary and secondary plasticising units, whose shots can differ considerably in weight, can be used
Finished molding in cross-section.
for single-component applications, both together and separately.
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Multinject Technology for Multicomponent Applications
The sandwich nozzle permits both injection units to be used for single-component applications as well.
the benefits of the sandwich process at a glance:
· · · · ·
Existing 2-component machines can be readily retrofitted with the adapted sandwich platen. The sandwich platens can be used for all configurations of the 2nd unit (Z, L, and V positions). Savings on material costs because inexpensive fillers used. Standard cold-runner molds can be used. The sandwich nozzle is versatile enough to be used for single-component applications.
Y-junctions can be made by sandwich molding a judicious combination of polyamide and polypropylene in conjunction with water-injection. The inner polypropylene layer is chemically resistant, while the polyamide provides rigidity and thermal stability.
Technology in detail
Page 7
teCHnologY in detail
Cavity separation process
In the cavity separation process, component 1 is injected into the cavity, part of which is blocked with a slide or slide valve, and allowed to cool.
Injection of component 1.
The slide is then pulled back so that the rest of the cavity can be injected with component 2. The mold usually remains closed for this operation. The components are injected sequentially. The cavity separation method is suitable for parts having 1 degree of design freedom. The molds are compact and inexpensive.
solution: Programmable core pulls
Component 2 is gated in such a way that the
Pulling back of slide.
substrate does not have to be transferred or rotated. The programmable core pulls with standardised interface allow the slides to be flexibly programmed and moved according to the settings with the MC5 control. The touchscreen variant of the MC5 control offers the user interface to be configured so as to show only the functions needed. This prevents programming errors relating to the core pulls. and affords a simple way of assigning the slide function to each core pull.
Injection of component 2.
Overall view of finished part.
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Multinject Technology for Multicomponent Applications
Compact unit for producing wind deflectors, featuring a cavity separation mold and handling robot
advantages of the cavity separation process at a glance:
· Component 1 remains in the cavity and thus provides an
optimal seal against component 2.
· Space-saving production, since the mold is not transferred or rotated. · Versatile, simple programming of the core-pull functions
using the tried-and-tested MC5 control.
Wind deflector with integrated gasket made by the cavity separation process
Technology in detail
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teCHnologY in detail
The turntable process
In the turntable method, component 1 is injected, the mold opens, the mold half on the moving mold is rotated and then closed. Component 2 is then injected. At the same time, component 1 is
Injection of component 1.
injected. Ejection occurs after rotation. The number of rotations depends on the part, and may involve two (0° - 180° - 0°), three (0° - 120° - 240° - 360°) or four (0° - 90° - 180° - 270° - 360°) rotations. The turntable process lends itself to parts having 1 or 2 degrees of design freedom and is the most widely used multicomponent process.
Rotation of moving mold half on turntable.
solution: turntables with capacities that set standards
KraussMaffei uses either add-on (for clamp forces from 650 to 2000 kN) or integrated (>2000 kN) turntables. Servo motors for rotating the molds are fitted as standard. The servo motors offer high movement precision combined with high dynamics. They operate independently of the hydraulics and so rotation can take place while the mold is opening. The turntables are centrally lubricated and their mounts are designed for heavy molds.
Simultaneous injection of component 2 and component 1.
Overall view of the finished part.
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Multinject Technology for Multicomponent Applications
Turntables from KraussMaffei are notable for their rugged mechanics and generous fluid circuits.
generous number of fluid lines
Add-on KraussMaffei turntables have provision for up to six water and oil circuits (6 inlets and 6 outlets). These circuits can be configured for water and oil circuits. Integrated turntables have provision for 8 fluid circuits 6 for water and 2 for the hydraulics. This is enough capacity for even those applications which require intensive cooling.
the advantages of the turntable process at a glance:
· Component 1 remains in the cavity and thus provides an optimal seal against component 2. · KraussMaffei turntables require virtually no maintenance due to ther rugged mechanics and
automated centralised lubrication system.
· Effective mold cooling, with provision for up to 8 fluid circuits (16 connections). · Short cycles, thanks to the high dynamics of the rotating unit and the synchronous
movement of the turntable.
Housing of any type, like e.g. for power tools are a typical example of use for the turntable technique.
Technology in detail
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teCHnologY in detail
The sliding-table process
Injection of component 1, and then movement of the core side to cavity 2.
In the sliding-table process, the mold consists of a core side and two cavity sides, with one component forming the contour for the second. After the 1st component has been injected, the mold opens and the core side is pushed onto the 2nd cavity surface. The mold is closed and component 2 is injected. Materials 1 and 2 are injected sequentially. Like its turntable counterpart, the sliding table method is suitable for parts with the first or second degree design. The sliding-table process is mostly used for small runs, e.g. for prototype molds or small batches. Sliding-table technology is simple compared with the turntable process. Since the steps are performed sequentially, the cycle time is longer than in turntable applications.
Injection of component 2.
solution: flexible mold control
The sliding mechanism is integrated into the mold. The machines are accessorised from the extensive catalogues of the CX and MX series. Like the cavity separation, the sliding table is moved by core pulls which can be programmed on the tried-and-tested MC5 control.
Overall view of the finished part.
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Multinject Technology for Multicomponent Applications
Production of seatbelt covers by a combination of SkinForm and sliding-table processes
the advantages of the sliding-table process at a glance:
· Component 1 remains in the cavity and thus provides an optimal seal against component 2. · Capital investment in mold technology lower than for the turntable process. · Unrestricted cooling of both mold halves, as for 1-component applications,
since the mold does not rotate.
· Simple and precise process control because the MC5 control unit is clearly structured.
Seatbelt covers - produced by process integration of sliding table and SkinForm methods with colour change from shot to shot (see p. 26/27)
Technology in detail
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teCHnologY in detail
The SpinForm process
In the SpinForm process, the two parting lines are arranged one behind the other. The injection units face each other in the machine axis. In the central part is a turntable called a spinning unit. The swivel unit rotates about the vertical machine axis. The substrates are injected and remain attached to the core of spinning unit when the mold opens.
Close mold, Injection of component 1.
The swivel unit rotates through 180°, the substrates are rotated into a new cavity and are overmolded with component 2. Like the turntable process, SpinForm is suitable for parts having 1 or 2 degrees of design freedom. The SpinForm method is ideal for panel-like parts or or applications with high numbers of cavities.
solution: Kraussmaffei swivel unit sets standards
Generously dimensioned for high performance: The swivel units are mounted on a sliding table,
Opening of mold and rotation of swivel unit. Closing of mold.
which is moved on the machine base. This allows heavy molds to be accommodated and optimum use to be made of the vertical daylight in the mold design. All swivel units, like turntables, come with servo motors and are centrally lubricated. The fluids are fed from below via the rotary distributor integrated in the machine base. This concept provides room for generously sized fluid circuits with hoses up to 2 inches in diameter.
Injection of component 2. Simultaneous injection of component 1 for the next part. Finished part is ejected
Open for everything: Optimal accessibility from the side means that robots and peripherals can be readily attached. Thus, while injection is occurring, it is possible to perform interim steps, such as placing inserts, pretreating the substrate and removing parts from the side. This is accomplished with cube-stack molds having 4 mold parts on the swivel unit.
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Multinject Technology for Multicomponent Applications
The SpinForm process offers twice the production capacity of standard turntable applications.
No stresses in the part: Panel-like parts are often compression molded to reduce stresses and achieve longer flow paths. Standardised processes, such as expansion compression, DecoForm, and glazing can be integrated into any SpinForm machine.
Cleanliness Guaranteed success in the future: SpinForm machines can be used in cleanrooms due to their two-platen technology. Special adjustments made to the hydraulics minimise air turbulence and temperature fluctuations. The housing concept use for the clasp facilitates easy definition of the cleanroom.
advantages of the Kraussmaffei spinform process at a glance:
· Twice the production capacity for the same machine size. · Greater, improved cooling capacity due to generously dimensioned rotary
distributors of reference standard.
· No limitations on panel-like parts, since rotation between the tiebars is possible. · Suitable for cleanrooms due to lubricant-free clamp and two-platen design. · Compression molding can be simply integrated in sequential steps.
Car sunroof with integrated assembly elements produced by the SpinForm process. KraussMaffei partners of the pioneers for panel-like glazing.
Technology in detail
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teCHnologY in detail
The index process
In the index process, part of the contour of component 1 is located on an indexing platen. After injection, the index platen, along with the substrate, is pushed out of the mold half by the ejector system and turns through 90°/120°/180°.
Injection of component 1.
Afterwards, the substrate is placed on the core of component 2 as the index platen retracts. At least part of the substrate is now overmolded from both sides with component 2. The index process lends itself to parts having 3 degrees of design freedom and entails having to lift the substrate. This is not possible with a turntable. Traditional index process: In the traditional process, the index shaft and drive form part of the mold. The disadvantages are the higher mold costs and associated larger mold extensions.
Lifting, turning and renewed pull-back of the index platen.
solution: intelligent machine technology for reduced mold costs
KraussMaffei is tackling the disadvantages of the traditional index process by offering production cells with index drive and/or index shaft on the machine side. The two-platten clamp design offers adequate space for the index-drive motor. This
Injection of component 2. Simultaneous injection of the next substrate.
is mounted behind the ejector plate. The drive is a servo motor and thus operates independently of the hydraulics. The KraussMaffei index shaft features four water circuits and the hoses are connected up via a separate energy chain.
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Multinject Technology for Multicomponent Applications
Space-saving positioning of the index drive unit behind the ejector.
Simple interface for molds with integrated index shaft.
High availability due to fast set-up times: The interface to the mold forms a fluid and torque transfer point to the moving platen. The molds can be smaller, because no index shaft is needed.
Mold investment costs are reduced, because the molds can share a common drive and shaft. Mold changing and maintenance work are thus simpler and faster to carry out.
advantages of the Kraussmaffei index process at a glance:
· The drive technology is a unique part of the machine. Follow-up costs for
molds are significantly reduced.
· Improved access and rapid mold changing thanks to the simple interface. · Effective cooling of the part due to 4 cooling circuits. · Short cycle times achieved through optimised rotational speed of the index
shaft in parallel to the mold movement.
Applications for the index process include automotive ventilation flaps with integrated seal.
Technology in detail
Page 17
teCHnologY in detail
The transfer process
In the transfer process, the substrate is injected and then transferred by a robot to a new cavity or to a different injection molding machine. The transfer method is the most flexible multi-component method and is suitable for components of the 4th
Injection of component 1.
Such parts necessitate complete removal of the substrate from the first cavity. Transfer from one machine to the other is common for thermoplastic/rubber composite parts as it is a simple way to thermally separate the two components.
solution: machines and robots form a single unit
Transfer of the substrate to a new cavity.
KraussMaffei uses its own LR and LRX series robots for the transfer tasks. Robot solutions from KraussMaffei have been on the market for more than 25 years and are renowned for their precision reproducibility at high speeds. They boast rugged mechanics and high-performance servo drives. The outcome is rapid closing movements and accurate part insertion without the usual axle vibration, even when travel is fast. With KraussMaffei machine technology, the strengths of robotic solutions are exploited to the full.
Injection of component 2. Simultaneous injection of the next substrate.
Overall view of the finished part.
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Multinject Technology for Multicomponent Applications
Production of a substrate on injection molding machine 1, removal by robot, temporary storage and insertion by robot into injection molding machine 2 for overmolding with component 2.
fast thanks to modern bus technology
The robots' absolute position-sensing system of the robots, already a standard feature, ensures maximum accuracy. The shared control unit minimises interfaces and avoids operator errors. CE compliance is a standard feature of the systems and shows that we actually do believe in "machine and robot acting as a unit".
Rapid VARAN bus technology coupled with the MC5 control unit in a master-slave arrangement ensures high-resolution signal processing and thus extraordinary precision cycle after cycle. The operating concept is intuitive to learn and allows fast and easy programming.
advantages of the transfer process at a glance:
· Use of two existing 1-component machines as a multicomponent production cell. · All conventional multicomponent applications can be realized regardless of the degree of design freedom.
· Combination of process engineering expertise and production system featuring robots. · High-precision transfer with VARAN bus control · No hot-cold separation in the mold needed in the case of For thermoplastic/rubber composites.
Perfume bottle caps exemplify the transfer process.
Technology in detail
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detailed ProduCt information
Sample machine configurations for the CX series
KraussMaffei two-platen injection molding machines are highly versatile as regards the position of the other injection units. Ready accessibility from all sides allows the units for the second component to be freely configured to fit in with existing infrastructure and mold technology.
vertical arrangement of the second injection unit (v position)
CX-V machines offer good accessibility to the main injection unit. The V-unit can be moved completely out of the clamp zone to afford unimpeded access to the mold zone. Molds can therefore be changed quickly and easily.
Vertical arrangement of the second injection unit (V position)
Piggyback arrangement of the second injection unit (z position)
The Z configuration extracts the most from the two-platen technology. The second unit adds very little extra height to the machine. The machine is extremely compact. CX-Z series machines are ideal for cleanroom applications, especially when combined with cantilevered clamps for small clamp forces.
Piggyback arrangement of the second injection unit: vertical (Z position)
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Multinject Technology for Multicomponent Applications
lateral arrangement of the second injection unit (l position)
The compact two-platen principle and the slim design of the KraussMaffei CX series allow L-units to be positioned very close to the machine. The footprint is not increased unnecessarily. The KM CX-L X-Form is a good example of the high performance you can expect (see pages 24, 25). All essential valueadding steps are implemented on a system with a footprint of 24 m².
An Injection Molding Compounder with horizontally arranged second injection unit, perpendicular to the machine axis (L position)
Horizontal arrangement of the second injection unit (w position)
Machines utilising SpinForm technology make optimum use of the clamp force. CX and MX machine base series are extremely rugged. They support solid swivel units. This combination is a stable base for heavy multi-cavity molds and is designed for high productivity.
Horizontal arrangement of the second injection unit in the machine axis (CX-WEN)
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Compact multicomponent injection molding cells based on the CX-Z series.
CX maCHines
KraussMaffei Multinject based on the CX series, with clamp forces from 600 to 6500 kN
The CX series are all-hydraulic machines that feature two-platen clamp units for small to medium clamp sizes. Generally, the CX series lends itself to any standard multicomponent application. The two-platen clamp design yields a compact machine series. Even though the 2nd injection unit may be chosen freely, the footprint is barely increased. The production cells are always compact.
advantages at a glance:
The CX module platform for the Multinject process possess a number of advantages for efficient production of multicomponent applications:
· Expanded mold platens as standard for projecting molds · The CX series is rugged enough to accommodate heavy molds. Regardless of the
turntable technology, up to 2/3rds of the total weight can be installed on the moving platen.
· Large ejector strokes possible thanks to two-platen clamp · Fast mold changing due to easy accessibility in the ejector zone · Ease of use is a standard feature of the Multinject systems Already included are:
pV control, adjustable nozzle contact force etc
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Multinject Technology for Multicomponent Applications
No restrictions on combinations of as regards positioning of the injection units. KraussMaffei has already implemented various MX systems in multicomponent technology featuring up to seven injection units.
mX series
KraussMaffei Multinject based on the MX series, with clamp forces from 8000 to 40,000 kN
The MX series of all-hydraulic machines feature two-platen clamp units for medium to large clamp sizes. The MX series is a rugged, dependable solution for multicomponent technology. The moving platen has been engineered as a box structure with solid metal ribs. During travel, large, solid sliding shoes ensure absolute platen parallelism. Even under clamping force, the platens will not deform. Heavy multicomponent molds can thus be operated safely.
advantages at a glance:
The MX series for the Multinject process has a number of advantages that enable you to make multicomponent products efficiently:
· Integrated turntables with generous cooling water capacity for the operation of
high-speed multi-component applications.
· Robust swivel units with unimpeded water distribution for heavy and complex SpinForm molds. · Simple integration of compression processes thanks to high platen parallelism and
extensive compression functions and strokes.
· Many variants, with configurations for up to 7 injection units.
Technology in detail
Page 23
multiComPonents of tHe neXt generation
Compact high-tech: The CX X-Form
With its two-platen technology and good allround access, the CX series is ideal for integrating complex peripherals into tight spaces. One outstanding example is the X-Form process, which is based on a CX machine. The X-Form is a multicomponent process incorporating all three of KraussMaffei's core competences.
space to expand
A CX injection molding compounder produces vibration dampers from X-Flex material. CX machines ensure good all-round access to the injection unit and clamp, with ample space for bolt-on units, like the second injection unit required here.
easy integration of components and handling robots
Generous daylight between the tiebars and free space behind the ejector make it easy to integrate turntables or sliding tables in the molds. This system illustrates how it's possible to integrate all key production steps in the smallest possible space. A handling robot, that makes maximum use of the free space above the machine, can be installed without problems. It is even possible to plan a product drop zone beyond the moving platen inside the machine housing with the clamp closed. This system illustrates how it is possible to integrate all key production steps in the smallest possible space.
What is X-form? Where are the economic benefits of switching to an X-form process?
The X-Form process makes it possible to produce parts which include the elasticity and high resilience of natural rubber and other elastomers. The innovative crosslinking process, in a single manufacturing cell, combines extrusion, injection molding and a reaction process. A specially developed thermoplastic polyurethane (TPU; X-Flex from Elastogran) crosslinks to form TPU-X in the reaction stage.
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KM 300-1400 CX IMC X-Form. 24 m2 is all it takes to integrate all key value-adding steps in this system for producing substitutes for metal/rubber composites.
The X-Form process opens the way for substantial cost savings in producing high-quality parts that combine rigid and flexible materials. The thermoplastic/X-Form composites are an attractive alternative to metal/rubber composites. By integrating the injection molding compounder inti the multicomponent molding process, KraussMaffei is opening up new opportunities and new market prospects.
An X-Form product weighs around 40% less than a equivalent steel product, the quality is much better, and unit manufacturing costs are lower thanks to the very fast cycle times. Potential applications for X-Form composites include valve covers and other covers with integrated seals, motor mountings, vibration absorbers and substitution of other metal/ rubber composite parts.
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multiComPonents of tHe neXt generation
SkinForm method
The term skin form is a KraussMaffei technology for the production of multi-component parts through a combination of "injection molding" and "reaction processing". The first cycle consists in making a thermoplastic support whose surface is then partly or completely flooded with polyurethane.
Integrating different production stages in one machine and in a one-shot process, it is possible to produce parts with new functionality. Savings can thus be made on expensive post-processing and assembly. All these factors make SkinForm a system well worth looking at for your business. Thanks to good side access, downstream automated
SkinForm is an innovative process that very cleverly combines the benefits of injection molding and polyurethane processing. It is a one-shot process for producing complex composite parts that combine a thermoplastic and a polyurethane. The surface is enhanced by one-shot reaction molding. In the automotive industry, high-grade PUR materials can be used to add value to the surfaces of molded parts. These are deceptively like leather in looks, feel and scratch resistance. PUR opens up a huge range of applications from high-value paint systems to foam systems for softtouch effects, acoustic or damping properties across all kinds of sectors.
systems can be attached without difficulty. The SkinForm process from KraussMaffei underlines KraussMaffei's position as a technological leader and is perfect evidence of our ability to act as a systems company: not only do the injection molding machine, PUR systems and the process come from us, but we also supply the molds, robots and downstream equipment. A single-source solution for next-generation multicomponent applications.
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Multinject Technology for Multicomponent Applications
SkinForm combines the advantages of KraussMaffei multicomponent technology with the technical advantages of our proprietary PUR systems.
New departures with SkinForm: multicoloured door panels. In a single cycle, three PUR sections are finished to perfection in three different colours.
Deceptive touch and scratch resistance combined with good damping properties: SkinForm handles for hammer drills.
Trends for Multinject
Seite 27
KraussMaffei Multinject solutions are turning multicomponent injection molding into a manageable standard
Customer benefits
Multinject Added value through economic multicomponent injection molding
Thanks to our customers, KraussMaffei has repeatedly demonstrated its innovation prowess in multicomponent injection molding since 1963. It is thanks to our customers that we can repeatedly bring our expertise to bear on sophisticated solutions and/or to further expand them with exclusive multiprocess technologies. This gives you security. - The security of efficient production cells at reference level for low-cost Partnering with KraussMaffei can cut the cost of parts production. And reward you with decisive competitive advantages whether through cost-effective, high-performance production cells and/or using new processes. production of multicomponent applications whether standard or specialised yesterday, today and tomorrow.
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Multinject Technology for Multicomponent Applications
KraussMaffei supplies efficient production equipment based on multicomponent technology from a single source
Kraussmaffei multinject benefits at a glance:
· Complete portfolio of efficient system solutions for multicomponent technology. · Comprehensive engineering and process expertise provides reassurance about
the design of your applications and accelerates their implementation in production cells.
· Rugged, modular machine technology with an extensive options catalogue makes
multicomponent injection molding step-by-step into a manageable standard.
· Standardised control unit with intuitive user interface for easy programming
of complex multicomponent processes.
· Different application possibilities for composites made from plastics and various application
areas, such as color changing, hard and soft composites and/or novel combinations with elastomers, rubber or polyurethane thanks to synergies from the combined areas of extrusion, injection molding and reaction technology offer potential for new applications.
Costumer benefits
Page 29
serviCe WorldWide
Service, support and spare parts when you need them, where you need them
Rely on us for a fast and competent response to all your service needs anywhere in the world. Whatever you need from troubleshooting and training to spares or repairs we're on the job. We're dedicated to supplying service quality on a par with the outstanding quality of our machines and systems. We offer far more than spare parts and hotlines. We'll work with you to choose the best and most cost-effective solution for your operation. We'll help you test new applications and we'll plan customized service packages.
all-round service training with high hands-on content Customer trials and prototyping in our test lab
The Injection Molding Division operates a test lab fitted with the latest machinery and equipment. We can run trials, produce prototype parts and fine-tune processes on your behalf. We can work with you to test and evaluate processes, machines and equipment in order to identify the best approach for a particular project. Our highlyqualified application engineers are there to help you.
Courses are held in our lab and training centre, or, optionally, on your premises. We offer clearly-structured basic and advanced training in operation, process control and maintenance for KraussMaffei injection molding machinery. On request, we'll plan and hold special courses on topics of your choice. All participants spend a high proportion of their training working hands-on with original KraussMaffei machines. A well-structured training program produces skilled operators and technicians, which will positively impact your up-time and productivity.
Contact for training: Rupert Gruber Phone: +49 89 8899-3613 Fax: +49 89 8899-4173 rupert.gruber@kraussmaffei.com
Our service offering is broad. We'll configure your system, install and commission it, train your staff, plan measures to minimize your downtime risk and maximize productivity, and carry out maintenance, repairs and upgrades. You'll find us fast, reliable and competent. Our hotline is manned by highlytrained and experienced service technicians. If necessary, we'll get a technician to you quickly. Remote diagnosis, interfacing directly with your machine's control system, can be a practical alternative. Spares for all important wear parts are available at short notice. We're continuously expanding our service network to speed up spare parts shipment. Talk to us about the right service solution for your business.
At your service worldwide
Team Europe Injection Molding Service Team Email: service-imm.europe@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.europe@kraussmaffei.com
Team America/Spain Injection Molding Service Team Email: service-imm.america@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.america@kraussmaffei.com
Team Asia/ Near East Injection Molding Service Team Email: service-imm.asia@kraussmaffei.com Injection Molding Spare Parts Team Email: spareparts-imm.asia@kraussmaffei.com
How to contact us
Apart from email you can contact us on the service hotline or by post at this address:
Hotline Phone: +49 89 8899-0 Fax: +49 89 8899-2206 injection molding service KraussMaffei Technologies GmbH Krauss-Maffei-Str. 2 80997 Munich Germany
KraussMaffei is a premium partner for the plastics and rubber processing industries worldwide. KraussMaffei machines and systems are used wherever plastics and rubber are converted into products. As a knowledge-driven technology company, we build on many decades of experience and a strong commitment to research and development.
KraussMaffei offers with the Multinject technology a continuous Portfolio of solutions for the implementation of applications of multicomponents. The power spectrum covers complete packages - including tool technology and process know-how. All these possibilities have one together: perfect the interaction of the individual system components and procedures. In this way the KraussMaffei Multinject solutions multicomponent injection molding makes a controllable standard.
Kraussmaffei technologies gmbH
Krauss-Maffei-Strasse 2 ··· 80997 Munich Phone +49 89 8899-0 ··· Fax +49 89 8899 - 2206 www.kraussmaffei.com
1.0 WE . 3rd edition 05/10 . SGM 019 B PRO 11/2008 GB ··· KraussMaffei reserves the right to make technical changes ··· Printed in Federal Republic of Germany.
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