Process for producing fabric-backed cushioning material

Details Process for producing fabric-backed cushioning material Process for producing fabric-backed cushioning material

1976-09-01

1979-02-06

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 78, 156 79, 156 87, 156245, 264 464, 264 467, B29C 1702, B29D 2704

Patent

active

041382838

ABSTRACT:
A fabric backed cellular cushioning material is produced in a mold by introducing a liquid reaction mixture into a mold cavity and then covering the mold cavity with a coposite material consisting of a fabric backing and a thin layer of preformed cellular material attached to the backing. The preformed cellular material is presented toward the mold cavity. The reaction mixture expands into a cellular cushioning material, which assumes the shape of the cavity, the expansion being sufficient to enable the molded cellular material to completely fill the cavity and diffuse partially into as well as adhere to the preformed cellular material. The air displaced by the expanding reaction mixture passes out of the mold cavity through the preformed layer of cellular material, but once the expanding cellular material reaches the preformed layer, the mold cavity is sealed.

REFERENCES:
patent: 2955972 (1960-10-01), Wintermote et al.
patent: 3210782 (1965-10-01), Burst et al.
patent: 3258511 (1966-06-01), McGregor
patent: 3273179 (1966-09-01), Ridenour
patent: 3431331 (1969-03-01), Pincus et al.
patent: 3432583 (1969-03-01), Robertson
patent: 3464872 (1969-09-01), Everett
patent: 3493449 (1970-02-01), Krug
patent: 3772111 (1973-11-01), Ginsburg
patent: 3976731 (1976-08-01), Kapral

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