Method of making a composite rigid foamed chair seat or the like

Details Method of making a composite rigid foamed chair seat or the like Method of making a composite rigid foamed chair seat or the like

1975-05-29

1977-07-12

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

249113, 264 467, 264 469, 264271, 264275, 297458, 297DIG1, 425812, 428314, 428425, B29D 2704

Patent

active

040354580

ABSTRACT:
A method for making an article such as a chair seat or the like is disclosed with the method including: attaching a rigid insert to one-half of a mold with an air permeable material extending from between the rigid insert and the mold outward toward the edges of the first half of the mold; inserting a liquid foamable reaction mixture into the cavity of a second half of the mold, placing the two mold halves together with the air permeable material extending from the cavity of the mold to the exterior thereof; allowing the reaction mixture to cure and form a rigid hard structure throughout while expanding around the sides of the rigid insert; and removing the finished article from the mold.

REFERENCES:
patent: 2955972 (1960-10-01), Wintermute et al.
patent: 3116196 (1963-12-01), Terry
patent: 3124627 (1964-03-01), Hood
patent: 3163687 (1964-12-01), Einhorn
patent: 3493449 (1970-02-01), Krug
patent: 3531552 (1970-09-01), Getz et al.
patent: 3557264 (1971-01-01), Getz et al.
patent: 3608007 (1971-09-01), Henrickson
patent: 3845183 (1974-10-01), Harrison
patent: 3895154 (1975-07-01), Kapral

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