Utilization of plastic films to control gas pressure and reduce

Details Utilization of plastic films to control gas pressure and reduce Utilization of plastic films to control gas pressure and reduce

1982-08-17

1984-10-16

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428159, 428160, 4283188, 4283197, B32B 310, B32B 520

Patent

active

044775040

ABSTRACT:
A cellular foam product having a composite foam supporting substrate and a method for making same. The composite substrate includes a load supporting structure to which a continuous barrier film is bonded. The barrier film seals openings in the structure through which gas pressure loss and foam leakage may occur during subsequent foam generating reaction processes. The substrate is formed by coating desired foam supporting surfaces of the supporting structure with an adhesive and vacuum forming a preheated thin flexible plastic film to the supporting structure to bond the film to the foam supporting surfaces.

REFERENCES:
patent: 3016317 (1962-01-01), Brunner
patent: 3126978 (1964-03-01), Bergstrom
patent: 3533901 (1970-10-01), Sutker
patent: 3979540 (1976-09-01), Moffett
patent: 4025372 (1977-05-01), Fenton
patent: 4128688 (1978-12-01), Wiley

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