Molded product

Details Molded product Molded product

1986-07-30

1987-06-09

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283105, 4283188, B32B 514

Patent

active

046719911

ABSTRACT:
A molded structural panel with substantially parallel major surfaces includes integrally formed thin thermosetting resin high density outer sections. Less dense thermosetting resin foam intermediate sections extend inwardly from the outer sections with the density of the intermediate sections decreasing substantially uniformly with increased spacing from the outer sections. A thin thermosetting resin high density central section is located between the intermediate sections. The high density outer sections are in a stressed state from the pressure of the foam intermediate sections thereon.

REFERENCES:
patent: 3444036 (1969-05-01), Russell et al.
patent: 3709843 (1973-01-01), Zocco et al.
patent: 3873656 (1975-03-01), Garner
patent: 3919370 (1975-11-01), Cotterell
patent: 3939021 (1976-02-01), Nishibayashi et al.
patent: 4154785 (1979-05-01), Inui et al.
patent: 4206165 (1980-06-01), Dukess

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