Cores with a big diameter up to 1000 mm, spirally wound, special editions in convolute winding. For winding rolled metal strips such as steel, aluminium, copper, brass etc.
Spiral cores with a smooth surface like wool felt prevent markings on the reeled product caused by the end of the tape.
In this way also valuable reeled products like aluminium tapes for litho-print can be completely used. Cores with a GUK-surface minimize markings on the high-sensitive copper and brass tapes.