Processable sheet with excellent rigidity and process for produc

Details Processable sheet with excellent rigidity and process for produc Processable sheet with excellent rigidity and process for produc

1997-06-06

1998-09-08

Pezzuto, Helen L.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428198, 428373, 442398, B32B 2734

Patent

active

058043128

ABSTRACT:
A processable sheet which is inexpensive and has exellent rigidity can be manufactured easily and safely without a need of any special apparatus. The sheet comprises a fibrous layer and a multi-layer film on one surface or both surfaces of the fibrous layer. The fibrous layer comprises highly entangled conjugate fibers each of which has a structure of a core and a sheath. The core is made of a high melting point-thermoplastic resin (B) and the sheath is made of a low melting point-thermoplastic resin (A). The multi-layer film comprises an outer thermoplastic resin (C) which is highly compatible with the low melting point-thermoplastic resin (A). Tho fibrous layer and the multi-layer film, as well as the contact points of the conjugate fibers, are melt-bonded to each other by a thermal treatment.

REFERENCES:
patent: 4375532 (1983-03-01), Baer
patent: 4737404 (1988-04-01), Jackson
patent: 4851284 (1989-07-01), Yamanoi et al.
patent: 4950541 (1990-08-01), Tabor et al.
patent: 5314922 (1994-05-01), Takai
patent: 5466513 (1995-11-01), Wanek et al.
patent: 5508093 (1996-04-01), Mehdorn

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