Process for preparation of a synthetic fiber bundle

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Production of continuous or running length

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264211, 26421112, 26421122, 264349, B29B 714

Patent

active

048083674

ABSTRACT:
A non-water swelling or a water-insoluble thermoplastic resin, water and an assistant for assisting dispersion of water into the thermoplastic resin are melt-kneaded and the kneaded composition is extruded from an orifice under such conditions that flashing of water is prevented. As the assistant, a water-soluble resin or a water-insoluble resin having a carboxylic acid salt group is used optionally in combination with a surface active agent. The spun product is a fiber bundle in which single filaments having a diameter smaller than 100 .mu.m are gathered in parallel to one another, and this fiber bundle is easily opened.

REFERENCES:
patent: 2505125 (1950-04-01), List
patent: 3373222 (1968-03-01), Armstrong
patent: 3681280 (1972-08-01), Beghelli et al.
patent: 4213747 (1980-07-01), Friedrich
patent: 4320041 (1982-03-01), Abe et al.
patent: 4410482 (1983-10-01), Subramanian

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