PACKAGING BAG FOR USE IN MICROWAVE OVEN

摘要

PROBLEM TO BE SOLVED: To provide a packaging bag for use in a microwave oven for packaging contents when heating in the microwave oven, which does not break while laterally laid, can automatically and stably lower the internal pressure, and is free from leakage even if the contents include fluidal food or the like.

SOLUTION: The packaging bag for use in a microwave oven is formed by: using a laminate film having a region of a resin layer which has predetermined strength at a room temperature or lower but has the predetermined strength lowered at a high temperature between a heat-resistant base layer and a sealant layer; overlapping a lower member having a sealant surface as the upper surface on an upper member having the sealant surface as the lower surface formed with a wing with the sealant surfaces facing each other and lateral sides and leading edge sides sealed; and sealing their peripheries. The laminate film is used in the upper member of the wing. The resin layer is formed to come across from the inside toward the outside on at least one region of the leading edge sides of the sealed wing.

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