Method of producing a plastics material mesh structure

Details Method of producing a plastics material mesh structure Method of producing a plastics material mesh structure

B - Operations, Transporting

29

D

18/1002

B29D 28/00 (2006.01) B29C 55/02 (2006.01) B29C 55/00 (2006.01)

Patent

CA 1281872

ABSTRACT Waisted holes are used when stretching a perforated starting material to form a mesh structure having molecularly-orientated strands. The holes define strand-forming zones which have a centre part of greater width than end parts; orientation is initiated in the end parts and travels towards the middle until the whole of the strand-forming zone has been stretched out to form a molecularly-orientated strand. In the molecularly-orientated strand, there are three portions in which the middle of the strand has moved away from the ends of the strand during stretching the same distance as the edges of the strand, these portions corresponding to the end and centre parts; in between, the middle of the strand has moved away from the respective end during stretching a different distance to the edges of the strand.

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