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US 10,322,567 B2Granted
Closure for container
AssigneeBerry Plastics Corporation
InventorsJau-Ming Su, Charisa Sofian, Paul Z Wolak
Life of this patent
Estimating the term…
Abstract
A package includes a container formed to include an interior region and a mouth opening into the interior region and a closure coupled to the container to close the mouth. The closure is made from a film coupled to a brim included in the container.
Claims9
A film for packaging a product, comprising
- (a) a sealant layer and
- (b) a protective layer, wherein
- i) the sealant layer a polypropylene-based multilayer polyolefin film comprising an inner heat sealable sub-layer comprising polypropylene blended with at least two different polyethylene polymer resins each selected from the group consisting of an ethylene/octene copolymer, linear low density polyethylene, low density polyethylene, high density polyethylene, ethylene vinyl acetate, and ethylene methyl acrylate,
- ii) the sealant layer does not fracture when exposed to a temperature in a range of about −20° C. to about 0° C.,
- iii) the sealant layer does not melt or burst when exposed to a temperature of up to about 105° C.,
- iv) the protective layer is included as part of the sealant layer, and
- wherein the sealant layer is adapted to form a closure with a polypropylene substrate and wherein the inner heat sealable sub-layer is in contact with the polypropylene substrate.
4 more elements
Dependencies are inferred from the claim text.