Process for the production of composite sheet bodies which are s

Details Process for the production of composite sheet bodies which are s Process for the production of composite sheet bodies which are s

1996-01-11

1998-02-10

Stemmer, Daniel

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 466, B32B 518, B32B 520

Patent

active

057165645

ABSTRACT:
The present invention relates to a process for the production of composite sheet bodies by back-foaming a flexible facing with a polyurethane foam forming reaction mixture. This polyurethane foam is characterized by a density of less than 300 g/l, preferably from 20 to 150 g/l, and optionally contains isocyanurate groups. Suitable flexible facings include those having a thickness of less than 10 mm, preferably less than 2 mm. This composite bodies produced by this process are suitable for use in the automobile sector as self-supporting components. Conventional stiffening elements are not necessary to produce these self-supporting composite bodies.

REFERENCES:
patent: 3929247 (1975-12-01), Borup
patent: 4916173 (1990-04-01), Otloski
patent: 5210127 (1993-05-01), Werner
patent: 5350781 (1994-09-01), Liman
patent: 5416125 (1995-05-01), Liman
patent: 5445879 (1995-08-01), Liman

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