Reinforced fibre products and process of making

Details Reinforced fibre products and process of making Reinforced fibre products and process of making

Filed on

1986-07-24

Date issued

1988-04-05

Examiner

Bell, James J.

Patent Class

Coating processes

SubClass

With post-treatment of coating or coating material

SubSubClass

Solid treating member or material contacts coating

Other Related Categories

427366, 4273899, 4274342, 4274344, B05D 312

Type

Patent

Status

active

Patent number

047358289

Description

ABSTRACT:
A process for impregnating a fibrous product, said fibrous product being a fabric woven from reinforcing fibres or a fabric of randomly disposed fibres, with a matrix polymer comprising causing partial impregnation of the fibrous structure by introducing the fibrous structure into a molten composition comprising the matrix polymer and a melt plasticizer for the matrix polymer and subsequently causing substantially complete wetting of the filaments of the fibrous structure by volatilizing the melt plasticizer from the partially impregnated structure at a temperature at which the polymer is molten, the melt plasticizer being thermally stable at the temperature of the melt and having volatility characteristics such that the plasticizer can be removed below the decomposition temperature of the melt but sufficiently involatile at the temperature of the melt to permit the viscosity of the melt to be reduced by comparison with the melt viscosity of the polymer at the same temperature. When a woven fabric is employed thermoformable composites can be obtained having short beam shear strength values at least 0.7 times the tensile strength of the plastics matrix material of the composite.

REFERENCES:
patent: 4135028 (1979-01-01), Hestand et al.
patent: 4410586 (1983-10-01), Ladizesky et al.
patent: 4496621 (1985-01-01), Habert et al.
patent: 4541884 (1985-09-01), Cogswell et al.
patent: 4559262 (1985-12-01), Cogswell et al.
patent: 4569884 (1986-02-01), Weinand et al.

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