Packaging sheet and containers and pouches using the sheet
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United States of America Patent
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Jul 18, 1989
Issued Date -
N/A
app pub date -
Mar 9, 1988
filing date -
Nov 20, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A packaging sheet for containing foodstuff is proposed which comprises a substrate of synthetic resin and a metallic film layer laminated to the substrate through an adhesive layer and a resin layer having a lower bond strength than the adhesive layer. Food packaging containers using the packaging sheet as a lid and self-standing pouches using the packaging sheet as their side sheets are also proposed. Before such a container or pouch containing food is put into a microwave oven for cooking, the metallic film layer or layers can be removed easily from the substrate.
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