Polymeric fiber masses, fibers therefrom, and processes for prod

Details Polymeric fiber masses, fibers therefrom, and processes for prod Polymeric fiber masses, fibers therefrom, and processes for prod

1978-05-15

1980-04-15

Ansher, Harold

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 9, 264 23, 264 69, 427384, 428301, 428302, 428361, 428364, 428500, 428516, 428521, 428523, 428910, B28B 108, B06B 300, B32B 526, B32B 528

Patent

active

041984617

ABSTRACT:
We have prepared a new class of polymeric fibers and masses which are produced by precipitation from solutions of the polymer. The fibers and fiber masses have novel and useful characteristics. A fiber mass of this invention is a coherent, three-dimensional network of interconnected crystalline polymeric fibers and fiber bundles randomly arrayed in all directions. The fibers are smaller in diameter than can be consistently produced by conventional fiber drawing and spinning techniques.
The novel fiber masses are produced from solutions of fiber-forming linear organic polymers having regularly repeated chain structures. The polymers are precipitated from these solutions by simultaneously cooling and agitating the polymer solution at vibrations in the sonic frequency range. The fiber masses may then be removed from the solvent or, in the case of a polymerizable solvent, a composite may be formed.

REFERENCES:
patent: 3317335 (1967-05-01), Marrinan et al.
patent: 3770562 (1973-11-01), Newman
patent: 3796778 (1974-03-01), Gallagher
patent: 3811923 (1974-05-01), Hammer et al.
patent: 3914497 (1975-10-01), Kanehira et al.
patent: 3914501 (1975-10-01), Miller et al.
patent: 3917448 (1975-11-01), Wood
patent: 3949126 (1976-04-01), Crawford
patent: 4039711 (1977-08-01), Newman
patent: 4048429 (1977-09-01), Berg et al.

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