Food or edible material: processes – compositions – and products – Packaged or wrapped product – Three or more layered packaging materials
Patent
1977-08-12
1979-10-23
Weinstein, Steven L.
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Three or more layered packaging materials
53434, 53449, 229 55, 426106, 426115, 426410, 426415, 220426, 220460, 220461, B65B 3102
Patent
active
041721527
ABSTRACT:
A container structure for carbonated beverages is described formed of a multiple wall structure having an inner wall and an outer wall. The inner wall is formed of a material through which a gas such as carbon dioxide from the retained beverage can migrate and become trapped in a chamber between the inner and outer walls. The outer wall is formed of a material which is sufficiently impervious to carbon dioxide so that a gaseous thermally insulative chamber is maintained around the inner wall. The inner and outer walls may be formed of thin heat sealable sheet material to provide a flexible thermally insulated carbonated beverage container.
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