Title: Method for manufacturing a textured synthetic multifilament yarn having alternately grouped S and Z twists

Abstract: A method for manufacturing a textured synthetic multifilament yarn having alternately grouped S and Z twists. The textured yarn is produced by a conventional false-twist operation under a processing temperature between a softening point and a melting point of the material yarn in a first step and then the above-mentioned yarn is subjected to a process for separating individual filaments in each of the compact portions under tension.

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Inventors: Kosaka, Kenzo (Nagoya, JA)
Morioka, Shin (Nagoya, JA)
Shibata, Kunio (Nagoya, JA)
Goto, Takashi (Nagoya, JA)
Takahashi, Eizi (Toyoake, JA)

Application Number: 449492
Filing Date: 1974-03-08
Publication_date: 1976-01-20
Assignee: Mitsubishi Rayon Co., Ltd. (Tokyo, JA)
Primary Class(es): 57/283 57/205, 57/208, 57/287, 57/288, 57/290, 57/293
Other Classes:
US Patent Ref:

3041813	Jul, 1962	Enneking	57/157.
3041814	Jul, 1962	Held	57/34.
3313011	Apr, 1967	Loftin et al.	57/157.
3328951	Jul, 1967	Potts et al.	57/157.
3733801	May, 1973	Jones	57/157.
3780515	Dec, 1973	Waters	57/157.
3796036	Mar, 1974	Parker	57/157.
3828542	Aug, 1974	Boutonnet	57/157.
3828542	Aug, 1974	Boutonnet et al.	57/157.

Other Refs:
Primary Examiner: Watkins, Donald E.
Assistant Examiner:
Attorney: Armstrong, Nikaido & Wegner