Method for permanently and uniformly incorporating an additive i

Details Method for permanently and uniformly incorporating an additive i Method for permanently and uniformly incorporating an additive i

1974-11-07

1977-01-04

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

106 15FP, 260 457P, 264290N, 264290R, 264290T, B29C 1702, B29D 2700

Patent

active

040013677

ABSTRACT:
Additives can be permanently incorporated into melt spun fibers by cold drawing the fibers under conditions that generate a network of interconnecting microvoids within the fiber. The microvoids are formed concurrently with the drawing of the fiber in a non-solvent liquid or vapor media, which media fills the microvoid network. The temperature of the medium is below the effective glass transition temperature of the fibers containing said medium. The additive is either present in said medium or is applied to drawn fibers containing said medium.

REFERENCES:
patent: 3091805 (1963-06-01), Dusenburg
patent: 3102323 (1963-09-01), Adams
patent: 3117173 (1964-01-01), Adams
patent: 3233019 (1966-02-01), Adams
patent: 3259681 (1966-07-01), Bull et al.
patent: 3335209 (1967-08-01), Morgan, Jr. et al.
patent: 3629365 (1971-12-01), Gardner
patent: 3660350 (1972-05-01), Kushlefsky

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