Method of making a fire-retardant product having a foamed lore a

Details Method of making a fire-retardant product having a foamed lore a Method of making a fire-retardant product having a foamed lore a

1980-03-17

1982-09-14

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 464, 264 466, 264129, 521906, B29D 2704, C08G 1814, C08J 934, C09K 328

Patent

active

043494943

ABSTRACT:
Articles having increased fire-retardant properties are obtained by surrounding a foraminous core having the desired product properties with an adherent protective layer of a hydrophilic polyurethane foam having large amounts of fire-retardant fillers. The core can be made of rigid, semi-rigid or flexible foams. Preferable cores include conventional bedding and cushioning materials. The protective layer can be sprayed or poured as a coating or molded on to the core.

REFERENCES:
patent: 3042137 (1962-07-01), Mathues et al.
patent: 3051601 (1962-08-01), Schick
patent: 3341640 (1967-09-01), Rosencrantz
patent: 3897372 (1975-07-01), Kehr et al.
patent: 4066578 (1978-01-01), Murch et al.
patent: 4110508 (1978-08-01), Isgur et al.
patent: 4137200 (1979-01-01), Wood et al.

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