Microfibers-generating fibers and a woven or non-woven fabric of

Details Microfibers-generating fibers and a woven or non-woven fabric of Microfibers-generating fibers and a woven or non-woven fabric of

1992-02-07

1994-03-01

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

428373, 428903, 428225, D02G 302

Patent

active

052906264

ABSTRACT:
A web or a fibers consisting of microfibers having a fineness of 0.01 denier or less is provided, which web or fibers is obtained by spinning conjugate fibers consisting of microfibers-generating fibers of island-in-sea type, according to melt blown process, the sea component being a thermoplastic resin (polyvinyl alcohol) capable of being removed with a solvent (water) and the island component being a thermoplastic resin (polypropylene) insoluble in the solvent used for the sea component, followed by collecting the spun conjugate fibers in the form of a web or a tow; the resulting composite fibers being thinner than those obtained according to conventional conjugate spinning and the microfibers obtained by removing the sea component also being thinner than fibers obtained from conventional conjugate fibers of island-in-sea type.

REFERENCES:
patent: 3716614 (1973-02-01), Okamoto et al.
patent: 4663221 (1987-05-01), Makimura et al.
patent: 4729371 (1988-03-01), Krueger et al.
patent: 4966808 (1990-10-01), Kawano
patent: 5124194 (1992-06-01), Kawano

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