Polyolefin foamed fibers and process producing the same

Details Polyolefin foamed fibers and process producing the same Polyolefin foamed fibers and process producing the same

1984-02-22

1984-11-27

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 459, 4283142, 428362, 428373, 428374, 428398, 428400, 428401, D04H 158

Patent

active

044851413

ABSTRACT:
Polyolefin foamed fibers consisting of composite fibers having a good spinnability, a small fineness and a non-waxy feeling, and a process for producing the same are provided, which foamed fibers having a structure wherein only a composite component (B) dominantly forming the fiber surface of composite fibers along the direction of the fiber axis thereof is substantially foamed and a part of the resulting foamed cells are burst open on the fiber surface, and which process comprises adding a foaming agent only to the above component (B) and combining two composite components so that the composite ratio thereof is 30/70 or higher and the theoretical average thickness of the component (B) in the cross-section of the unstretched fibers is 2 to 15 microns.

REFERENCES:
patent: 3760046 (1973-09-01), Schwartz et al.
patent: 3785919 (1974-01-01), Hickman
patent: 4265972 (1981-05-01), Rudner

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