Methods for manufacture of porous resin moldings, ultrafine fibe

Details Methods for manufacture of porous resin moldings, ultrafine fibe Methods for manufacture of porous resin moldings, ultrafine fibe

1991-01-02

1991-10-22

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 62, 521134, 521137, 521138, 521139, 264 49, C08J 926

Patent

active

050596306

ABSTRACT:
This invention relates to methods for porous resin moldings, for ultrafine fibers for ultrafine fiber nonwoven fabrics. In essence, the invention comprises providing a molding, spun fiber or crude nonwoven fabric containing a thermoplastic resin and a special high molecular compound which has an adequate affinity for the thermoplastic resin and able to dissolve rapidly in water and dissolving out the high molecular compound from the molding, spun fiber or crude nonwoven fabric. The method of the invention involve no risk of explosion or fire hazard in manufacture, free from adverse effects on health, and help curtail the manufacturing time.

REFERENCES:
patent: 4100238 (1978-07-01), Shinomura
patent: 4868222 (1989-09-01), Chau et al.

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