Spinnerets for producing trilobal and tetralobal filaments exhib

Details Spinnerets for producing trilobal and tetralobal filaments exhib Spinnerets for producing trilobal and tetralobal filaments exhib

1992-01-17

1993-01-05

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

26417713, 425464, B29C 4712, D01D 5253

Patent

active

051769263

ABSTRACT:
The present invention relates to spinnerets for forming synthetic filaments having a trilobal or tetralobal cross-sectional shape with substantial convex curves, connected by cusps, along the contour of each lobe. The filaments are especially suitable for making carpets which exhibit low glitter, high bulk, and resistance to fibrillation. The spinnerets have a central circular orifice with three or four radial slots radiating from the orifice. Peripheral orifices are located on the longitudinal axis of each radial slot.

REFERENCES:
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patent: 2945739 (1960-07-01), Lehmicke
patent: 2959839 (1960-11-01), Craig
patent: 3097416 (1963-07-01), McKinney
patent: 3109220 (1963-11-01), McKinney et al.
patent: 3249669 (1966-05-01), Jamieson
patent: 3418200 (1968-12-01), Tanner
patent: 3994122 (1976-11-01), Shah
patent: 4245001 (1981-01-01), Phillips et al.
patent: 4316924 (1982-02-01), Minemura et al.
patent: 4332761 (1982-06-01), Phillips et al.
patent: 4492731 (1985-01-01), Bankar et al.

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