Composite foam molded article process for production thereof, an

Details Composite foam molded article process for production thereof, an Composite foam molded article process for production thereof, an

1992-11-13

1996-07-02

Davis, Jenna L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283188, 4283197, 4283199, 521 51, 521134, 521140, B32B 326, B32B 2732

Patent

active

055320554

ABSTRACT:
An integrally molded composite article comprised of (I) a nonfoam layer formed from a thermoplastic elastomer powder composition (A) and (II) a foam layer formed from a foamable composition comprised of (i)(B) a thermoplastic synthetic resin powder, and (C) a heat decomposable foaming agent or (ii)(B) a thermoplastic synthetic resin powder, (C) a heat decomposable foaming agent and (D) a liquid coating agent, wherein the thermoplastic elastomer powder (A) is comprised of a composition of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin or a thermoplastic elastomer powder comprised of a partially cross-linked composition of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, the thermoplastic elastomer powder having a complex dynamic viscosity .eta.*(1) at 250.degree. C. and a frequency of 1 radian/sec of not more than 1.5.times.10.sup.5 poise and having a Newtonian viscosity index n, calculated by the following formula using the above-mentioned complex dynamic viscosity .eta.*(1) and the complex dynamic viscosity .eta.*(100) at a frequency of 100 radians/sec, of not more than 0.67:

REFERENCES:
patent: 4212787 (1980-07-01), Matsuda et al.
patent: 4247652 (1981-01-01), Matsuda et al.
patent: 4721643 (1988-01-01), Harayama et al.
patent: 4913944 (1990-04-01), Gilman, Jr.
patent: 5075162 (1991-12-01), Okubo et al.
English Abstract, Japanese laid open Appln. No. 2-57309, Feb. 1990.
English Abstract, Japanese laid open Appln. No. 2-57310, Feb. 1990.
English Abstract, Japanese laid open Appln. No. 3-177447, Aug. 1991.

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