Process of and apparatus for making tapes or yarns

Details Process of and apparatus for making tapes or yarns Process of and apparatus for making tapes or yarns

1998-01-30

1999-11-30

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264147, 264167, 2641771, 26417716, 425308, 425382R, 425464, 425465, D01D 542, D01D 5253, D02G 300

Patent

active

059937114

ABSTRACT:
For manufacturing tape or yarns, plastic polymer material is extruded into a film (20, 21) having a pattern of parallel, longitudinal, alternating ribs (31, 32) and deep, narrow grooves (33, 34) on each of its two opposite sides, at least a plurality of the grooves (33, 34) in one side each being located diametrically opposite one of the grooves (34, 33) in the other, opposite side. Yarns and tapes obtained in the form of or from such a film typically have a substantially improved tensile strength and are more supple and smooth.

REFERENCES:
patent: 4271104 (1981-06-01), Anderson et al.
Patent Abstracts of Japan, vol. 003, No. 095 (C-055), Aug. 11, 1979 & JP 54 073920 A (Chisso Corp), Jun. 13, 1979.

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