Process of melt spinning of a blend of a fibre-forming polymer a

Details Process of melt spinning of a blend of a fibre-forming polymer a Process of melt spinning of a blend of a fibre-forming polymer a

1982-11-04

1985-05-21

Czaja, Donald E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

264176F, 264211, 264349, 264DIG29, D01D 502

Patent

active

045187444

ABSTRACT:
A process of melt spinning a fibre-forming thermoplastic polymer, more particularly polyethylene terephthalate, polyhexamethylene adipamide or polypropylene, at a minimum wind up speed of 2 kilometers per minute in which there is added to the fibre-forming polymer, between 0.1% and 10% by weight of another polymer which is immiscible in a melt of the fibre-forming polymer, such other polymer having a particle size of between 0.5 and 3 microns in the melt with the fibre-forming polymer immediately prior to spinning and novel melt spun fibres produced by such a process and in which the other polymer is in the form of microfibrils.

REFERENCES:
patent: 3475898 (1969-11-01), Magat et al.
patent: 3979496 (1976-05-01), Schwarz
patent: 4123490 (1978-10-01), Gibbon

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