Process for longitudinal stretching in the production of...

Details Process for longitudinal stretching in the production of... Process for longitudinal stretching in the production of...

B - Operations, Transporting

29

C

B29C 55/04 (2006.01) B29C 55/06 (2006.01) B29C 55/18 (2006.01)

Patent

CA 2192917

Process for longitudinal strentching in the production of oriented polypropylene films The invention relates to a process for the longitudinal stretching of an at least single-layer thermoplastic film. The slow-running part of the stretching machine contains at least one driven roll and the fast-running part of the stretching machine contains at least two driven rolls, the roll pair being arranged in such a way that a roll nip is formed, into which the film is fed in such a way that it is gripped simultaneously by the roll pair and stretched.

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