Utilization of plastic films to control gas pressure and reduce foam in cellular foam products
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United States of America Patent
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Oct 16, 1984
Grant Date -
N/A
app pub date -
Aug 17, 1982
filing date -
Aug 17, 1982
priority date (Note) -
Expired
status (Latency Note)
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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.
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