Foam material reinforced with composite fibers

Details Foam material reinforced with composite fibers Foam material reinforced with composite fibers

1990-12-07

1993-04-06

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428288, 428289, 428290, 428296, 4283044, 4283171, 4283177, 4283179, 428373, 428374, 428394, 428408, 428902, D02G 300, B32B 522, B32B 326, B32B 700

Patent

active

052002616

ABSTRACT:
A fiber-reinforced foamed material comprises a foamed body of a resin having a flexural elasticity modulus not smaller than 150 kg/mm.sup.2, reinforcement fibers, and a bonding component through which the reinforcement fibers are integrated with the foamed body so as to reinforce the foamed body.
A method for producing a fiber-reinforced foamed material comprises the steps of: providing a material having a potential foamability; providing a composite fibrous material in the form of composite fibers and/or composite yarns each having a first component and a second component; and allowing the foamable material to foam together with the composite fibers or composite yarns at a temperature 10.degree. C. or more higher than the thermal deformation temperature or melting temperature of the first component and 20.degree. C. or more lower than the thermal deformation temperature or melting temperature of the second component, whereby the first component is thermally deformed or melted to serve as a bonding component, while the second component remains as a fibrous reinforcement component, the fibrous reinforcement component being integrated with the foamed body through the bonding component so as to reinforce the foamed body.

REFERENCES:
patent: 3932687 (1976-01-01), Okamoto et al.
patent: 4163824 (1979-08-01), Saidla
patent: 4438166 (1984-03-01), Gluck et al.
patent: 4457373 (1984-07-01), Matsui et al.
patent: 4612241 (1986-09-01), Howard, Jr.
patent: 4830904 (1989-05-01), Gessner et al.
patent: 4925729 (1990-05-01), O'Connor

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