Heat-durable spun-like fasciated yarn and method for producing t

Details Heat-durable spun-like fasciated yarn and method for producing t Heat-durable spun-like fasciated yarn and method for producing t

1983-04-21

1985-03-19

Watkins, Donald

Textiles: spinning, twisting, and twining

Strand structure

Longitudinal variation

57210, 57243, 57328, 57350, D02G 302, D02G 334, D02G 322

Patent

active

045051003

ABSTRACT:
A fasciated yarn, consisting of wholly aromatic polyamide fibers, which is excellent in mechanical properties, especially in creep durability in a high temperature atmosphere and is suitably utilized for industrial usage. The yarn can be produced by a method comprising the steps of: stretch-breaking a filament tow of the wholly polyamide fibers to form a staple fiber bundle and imparting a false-twist to the staple fiber bundle by a vortex while retaining parallelism of the staple fibers composing the bundle, thereby obtaining the fasciated yarn. Structural characteristics of the yarn reside in a mean fiber length in the range of from 150 mm to 600 mm, a crimpability of less than 5%, a mean degree of parallelism of less than 3.degree., and a number of wrap fiber groups in a range of from 0.5 to 20 per 1 cm in length of the yarn.

REFERENCES:
patent: 3079746 (1963-03-01), Field
patent: 3365872 (1968-01-01), Field
patent: 4003194 (1977-01-01), Yamagata et al.
patent: 4114358 (1978-09-01), Tsuchida et al.
patent: 4265082 (1981-05-01), Sasaki et al.
patent: 4350731 (1982-09-01), Siracusano
patent: 4356690 (1982-11-01), Minorikawa et al.
patent: 4384448 (1983-05-01), Wilkie

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