Method of making a foamed polystyrene building panel

Details Method of making a foamed polystyrene building panel Method of making a foamed polystyrene building panel

1978-09-01

1981-04-07

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

5230911, 264 464, 428 83, B29D 2700

Patent

active

042605695

ABSTRACT:
The building panel of the invention is made in accordance with a novel process. A plurality of frame members are laterally spaced with respect to each other. A particular process is used to form a dry coating of polystyrene disposed on at least one side of each frame member. The frame members are placed in a mold cavity where styrene beads are placed adjacent the dried coating of polystyrene on each frame member. The styrene beads are then expanded through a heating step thereby causing the molded styrene section formed between the frame members to be integrally bonded or fused to the frame members through the mechanism of the expanding stryene beads fusing with the polystyrene of the dried coating.

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patent: 3925528 (1975-12-01), Muller et al.
patent: 3935044 (1976-01-01), Daly

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