Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1990-08-29
1993-02-23
Ryan, Patrick J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428357, 428359, 428364, 428375, 428374, 264147, 264171, B32B 2714, B29D 900, D01D 542
Patent
active
051888955
ABSTRACT:
Bulky split fibers having bond strength are produced by preparing a composite synthetic resin film of three layer structure having a polypropylene layer formed of a polypropylene/polyethylene blend and a polyethylene layer on either surface of the polypropylene layer, slitting and stretching the composite film to thereby form stretched tapes, and causing splitting of the stretched tapes for fibrillation. An integral article is prepared from the resultant split fibers by mixing them alone or with plant fibers and then heating at a temperature between the melting points of polyethylene and polypropylene, thereby integrating together the split fibers with each other or with the plant fibers.
REFERENCES:
patent: 3819769 (1974-06-01), Pirot
patent: 4134951 (1979-01-01), Dow et al.
Database WPIL, accesion No. 89-329610 (45) Derwent Publ. Ltd. 1989.
Igaue Takamitsu
Katsurayama Hirofumi
Kido Tsutomu
Nishino Kazunari
Sasagawa Shuzo
Mitsui Petrochemical Industries Ltd.
Ryan Patrick J.
Uni - Charm Corporation
Weisberger Richard C.
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