Composite foamed material

Details Composite foamed material Composite foamed material

1979-04-05

1980-12-23

Anderson, Philip

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264 454, 264DIG7, 428402, 521 59, 521 70, 521137, B29D 2700

Patent

active

042411904

ABSTRACT:
A process is disclosed herein for the production of a composite foamed material which comprises premixing expandable polystyrene beads and a binder and adding the premix to fragments of resilient, open-celled material. The materials are combined in the proportions of about 4-15% polystyrene beads, about 6-25% binder and about 60-90% open-celled material. The combined materials are compressed to a density of about 5-30 lbs per cubic foot preferably 5-17 lbs per cubic foot, and steam is applied to the compressed materials to cure the binder and expand the polystyrene beads, producing the desired composite foamed material.

REFERENCES:
patent: 2878153 (1959-03-01), Hacklander
patent: 2892216 (1959-06-01), Steel
patent: 2958905 (1960-11-01), Newberg et al.
patent: 2959508 (1960-11-01), Graham et al.
patent: 3114722 (1963-12-01), Einhorn et al.
patent: 3251916 (1966-05-01), Newnham et al.
patent: 3300421 (1967-01-01), Merriman et al.
patent: 3503840 (1970-03-01), Parrish
patent: 3585157 (1971-06-01), Beck
patent: 3607797 (1971-09-01), Rubens
patent: 3878133 (1975-04-01), Rubens
patent: 3894973 (1975-07-01), Yunan

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