Synthetic polymer multifilament yarn useful for bulky yarn and p

Details Synthetic polymer multifilament yarn useful for bulky yarn and p Synthetic polymer multifilament yarn useful for bulky yarn and p

1987-11-18

1988-12-13

Gibson, Sharon A.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428373, 428374, 428398, 428399, 264167, 264168, 2642091, 2641772, D02G 300

Patent

active

047910267

ABSTRACT:
A synthetic polymer multifilament yarn capable of being converted to a bulky yarn is composed of a plurality of irregular individual filaments each having at least two belt-shaped filamentary constituents, at least one core filamentary constituent located between the belt-shaped constituents and extending in a sinuous manner and having a thickness varying alternately between thick and thin, and at least two thin middle filamentary constituents located between the core constituent and the belt-shaped constituents to thereby connect those constituents to each other. In each cross-sectional profile of the individual filaments, the core constituent has an inscribed circle having a diameter (lB), the belt-shaped constituents have a substantially I-shaped cross-section, the middle constituents have a waist-formed cross-sectional profile having a narrowest portion thereof, and the diameter (lB) is larger than diameters (lC) of inscribed circles of cross-sectional regions each consisting of a cross-section of a belt-shaped constituent and a half portion of a waist-formed cross-section of a middle constituent located between the belt-shaped constituent and a line drawn along the narrowest portion of the middle constituent.

REFERENCES:
patent: 3200576 (1965-08-01), Maerov et al.
patent: 4084622 (1978-04-01), Nakagawa et al.
patent: 4153660 (1979-05-01), Reese
patent: 4332757 (1982-06-01), Blackman et al.
patent: 4349604 (1982-09-01), Blackman et al.
patent: 4546043 (1985-10-01), Yoshimoto et al.
patent: 4631162 (1986-12-01), Yoshimoto et al.
patent: 4661404 (1987-04-01), Black
Derwent Abstract 78-00972A/01, of Japanese Patent 81-049322.
Derwent Abstract 77-023384/02, of Japanese Patent 84-20003.

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