Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1990-03-02
1992-05-26
Dawson, Robert A.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 467, 264 245, 264255, 264309, B29C 6722
Patent
active
051165570
ABSTRACT:
A method is disclosed of making in a mould cavity objects having an outer wall from a micro-cellular or non-cellular elastomer (7) and a core consisting at least partly of a synthetic foam (9), including the following steps: in a first step, a layer (7) of the elastomer is applied by spraying onto the surface (1) defining the mould cavity, and then, in a second step, before the elastomer is completely cured, a reaction mixture for obtaining a synthetic foam (9) is injected in the thus by the formed elastomer layer (7) defined space (8) of the mould cavity and wherein, in a third step, after the synthetic foam (9) has been cured substantially completely and forms a whole with the elastomer layer (7), the thus obtained object is demoulded.
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De Winter Hugo
Debaes Bernard
Nicolaus Frank
Dawson Robert A.
Kuhns Allan R.
Recticel
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