Sandwich structure comprising outer films having low permeabilit

Details Sandwich structure comprising outer films having low permeabilit Sandwich structure comprising outer films having low permeabilit

1999-01-12

2000-05-30

Buttner, David

Stock material or miscellaneous articles

Composite

Of polyamide

428414, 4284761, 427155, 427365, 4274123, 4274125, 264 79, 264130, 2641731, 26417314, 525 66, 525179, 525184, 525183, B32B 2734, B32B 2732

Patent

active

06068934&

ABSTRACT:
The present invention provides a sheet molding compound consisting in a sandwich structure comprising a central layer of reinforced uncured heat hardenable sheet molding compound; and two outer layers of a release film having low permeability to hydrocarbons comprising at least one layer (i) of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) of a polyolefin.

REFERENCES:
patent: 4444829 (1984-04-01), Bollen
patent: 4588648 (1986-05-01), Krueger
patent: 5106692 (1992-04-01), Shigemoto
patent: 5114765 (1992-05-01), Inada
patent: 5601770 (1997-02-01), Maligie

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