PACKAGING BAG HAVING INTERNAL PRESSURE DISCHARGING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To overcome the problem that steam, which is generated in the heating process by a microwave oven or the like in the packaging bag of a half-processed food, spoils the taste of the food.

SOLUTION: The food packaging bag has a structure wherein a thin film layer is installed at a part of the packaging bag made of a synthetic resin film to discharge an excessive steam pressure caused by heating to the outside through the swelling and the breaking of the thin film layer.

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