B - Operations – Transporting – 21 – F
Patent
B - Operations, Transporting
21
F
28/12
B21F 45/18 (2006.01) A44B 19/42 (2006.01) B21D 53/52 (2006.01)
Patent
CA 1083799
PROCESS FOR THE MANUFACTURE OF NON-WOVEN STRUCTURES Abstract of the disclosure: In the manufacture of non-woven fabrics waste material is avoided by determining the distribution of the weight per square unit of both border zones of a non-woven and by folding there- after a part of the thinner border zone toward the inner part so that the resulting non-woven has a uniform distribution of weight per square unit. Especially in the case of non-woven fabrics made from little extensile material or having border zones which shall not be stretched, the web is guided at an angle about in the middle of the folding zone, the angle being inclined towards that level towards which the border zone is folded. There are obtained non-woven fabrics with very uniform di- stribution of weight per square unit.
297260
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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