Method of making foam filled panels

Details Method of making foam filled panels Method of making foam filled panels

1976-01-29

1978-02-21

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

156 79, 264 467, 264255, 264261, 264263, B29D 2704, B29C 500

Patent

active

040753042

ABSTRACT:
A method of making a foam filled panel by clamping two sheets together at one end thereof, spreading the sheets at the opposite ends, introducing foamable material into a hollow, closed space between the sheets where clamped, and progressively clamping and filling space between successive adjoining portions of the sheets working toward the free ends until a foam filled panel is formed. The sheets are kept at a fixed location and a sprayer is manipulated to introduce the foamable material. Panels of unusual shapes can be formed.

REFERENCES:
patent: 2798021 (1957-07-01), Land
patent: 2976577 (1961-03-01), Gould
patent: 3090078 (1963-05-01), Ackles
patent: 3123856 (1964-03-01), Dye et al.
patent: 3435102 (1969-03-01), Sullhofer
patent: 3484509 (1969-12-01), Keller
patent: 3537929 (1970-11-01), Keith et al.
patent: 3590425 (1971-07-01), Lieberman
patent: 3639553 (1972-02-01), Sueda et al.
patent: 3738895 (1973-06-01), Paymal
patent: 3923436 (1975-12-01), Lewis

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