Process for fabricating foam resin panel with integral reinforce

Details Process for fabricating foam resin panel with integral reinforce Process for fabricating foam resin panel with integral reinforce

1985-07-08

1986-04-22

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

264 451, 4283099, 4283105, 4283166, B32B 514

Patent

active

045842302

ABSTRACT:
A foam resin panel is formed with one or more high-density reinforcing sections which are of higher density than the rest of the panel and which, therefore, are more stiff. The reinforcing section is densified by compression during fabrication. The reinforcing section is compressed until the outer faces of the reinforcing section lie flush to the panel surface. Fabrication of an invention foam resin panel includes a compression step for fabricating the high-density reinforcing section following a prefabricating step in which a resin precursor is induced to foam and expand to a desired extent within a mold. The resulting uniform foam resin element has a number of projections at the points at which the reinforcing sections of the finished panel will lie. The projections are then compressed into conformity with the rest of the panel and cured. The extent of the projections determines the density of finished reinforcing sections.

REFERENCES:
patent: 2996409 (1961-08-01), Lavely
patent: 3464872 (1969-09-01), Everett
patent: 3520769 (1970-07-01), Baker
patent: 3906137 (1975-09-01), Bauer
patent: 3922429 (1975-11-01), Welch et al.
patent: 3925526 (1975-12-01), Haas

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