Process for fabricating a closed, foam-filled, reinforced polyes

Details Process for fabricating a closed, foam-filled, reinforced polyes Process for fabricating a closed, foam-filled, reinforced polyes

1981-08-24

1983-05-17

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

249160, 249163, 264138, 264250, 264257, 264269, 441 74, B29D 2704

Patent

active

043839550

ABSTRACT:
A process for fabricating hollow, foam-filled, reinforced plastic objects such as surfboards. The process involves disassembling a multi-part mold to expose its inner surface. The inner surface is then coated with a gel coat, resin and reinforcing material and assembled into two mold halves. A prefoam material is injected into each mold half which is then capped with a baffle. The foam is then permitted to rise, and a portion of the foam is forced through the baffle. The baffle is then removed and a certain amount of the foam is removed. The two mold halves are joined and a center joining resin is poured in this depression and allowed to cure.

REFERENCES:
patent: 2753642 (1956-07-01), Sullivan
patent: 2870793 (1959-01-01), Bailey
patent: 3487134 (1969-12-01), Burr
patent: 3673617 (1972-07-01), Schulz, Jr.
patent: 3802010 (1974-04-01), Smith
patent: 3929549 (1975-12-01), Smith
patent: 4065337 (1977-12-01), Alter et al.
patent: 4073049 (1978-02-01), Lint
patent: 4119583 (1978-10-01), Filip et al.
patent: 4256803 (1981-03-01), Laurent
patent: 4268571 (1981-05-01), McCarthy

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