Clear, autoclavable, sealed container having good water vapor barrier properties and flex crack resistance
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United States of America Patent
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Mar 30, 1982
Grant Date -
N/A
app pub date -
Aug 8, 1980
filing date -
Aug 8, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clear, flexible, sealed container may be made of first and second plastic sheets sealed together at their peripheries. The first plastic sheet defines a bulge to increase the inside volume of the container, and comprises a laminate of a layer of polyolefin and a blended layer of polyolefin and a block copolymer of polyolefin and polystyrene. The second plastic sheet is a bonded laminate of a layer of biaxially oriented polypropylene and nonoriented polypropylene, peripherally bonded to the layer of polyolefin of the first plastic sheet.
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