Manufacturing textile yarns

Details Manufacturing textile yarns Manufacturing textile yarns

1973-07-16

1976-03-09

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

264210R, 264235, 264284, 264DIG47, B29C 1702, D01B 900, D01D 1100

Patent

active

039432220

ABSTRACT:
In the manufacture of textile yarns from synthetic thermoplastic materials, such as polyamides, polyesters and polyolefins, e.g. polypropylene, a web or sheet of the material, which may be preformed or formed by extrusion or casting as a step in a continuous process, is subjected to "forging" as by a profiled roller to produce in the web or sheet parallel lines of weakness and then to such a drawing operation in a direction parallel to the lines of weakness that the web or sheet is stretched to many times its original length and, with or without assistance of other mechanical means, is thereby split into discrete, thin filaments suitable for textile yarns. 5 1 1 Anderson; Philip 1 4

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