Integrated one-way valve with polyol film

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United States of America Patent

PATENT NO 10442589
APP PUB NO 20170283136A1
SERIAL NO

15465851

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A one-way valve integrated into a lamination of the kind used as a membrane seal for coffee containers and the like. The valve comprises a top layer, a substrate and a fluid polyol film. The top layer and the substrate are adhered together by an adhesive disposed between the top layer and the substrate. The adhesive defines a boundary of a valve chamber in which the top layer and the substrate are not permanently adhered to each other. The film enhances the adhesiveness of the top layer to the substrate in the area of the valve chamber so that gas inside the container does not escape until the internal pressure reaches a minimum value.

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Patent Owner(s)

  • SONOCO DEVELOPMENT, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Branyon, Jacob Donald Prue Hartsville, US 17 63

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