Process for producing a potentially bulky yarn

Details Process for producing a potentially bulky yarn Process for producing a potentially bulky yarn

1979-01-05

1981-04-21

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

28259, 428364, 428369, 428399, D02G 300

Patent

active

042633680

ABSTRACT:
A process for producing a potentially bulky yarn which is a substantially non-interlaced multifilament yarn of a thermoplastic synthetic fiber satisfying the characteristic values of R.sub.max /R.ltoreq.2.5, .DELTA.S.sub.5 .gtoreq.1.5, .DELTA.S.sub.50 .ltoreq.3.0, Y.gtoreq.1.3 and X.sub.T -X.ltoreq.1.0, where R.sub.max is maximum tension fluctuation width, R is average tension fluctuation width of a normal portion, .DELTA.S.sub.5 is difference in maximum shrinkage among each filament of a sample having a length of 5 cm, .DELTA.S.sub.50 is difference in maximum shrinkage among each filament of a sample having a length of 50 cm, X.sub.T is maximum tension, X is average tension and Y is degree of bulkiness/dry heat shrinkage.

REFERENCES:
patent: 2974391 (1961-03-01), Speakman et al.
patent: 3047932 (1962-08-01), Pittman et al.
patent: 3095630 (1963-07-01), Pittman
patent: 3112551 (1963-12-01), Schmieder et al.
patent: 3224068 (1965-12-01), Edington
patent: 3444682 (1969-05-01), Polacco et al.
patent: 3498044 (1970-03-01), Hopkins
patent: 3538566 (1970-11-01), Mitsuishi et al.
patent: 3591954 (1971-07-01), Horvath
patent: 3601872 (1971-08-01), Potman et al.
patent: 3651193 (1972-03-01), Barlow et al.

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