INNER BAG AND LID MEMBER

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive inner bag in which a defective seal is hardly generated in a heat seal part, and rice cake or the like sealed therein hardly becomes moldy.

SOLUTION: A rice cake 2 is sealed in the inner bag 1, and further sealed in an outer bag formed of a film of gas barrier property. Oxygen absorbing agent is sealed both in the outer bag and outside the inner bag 1. The inner bag 1 is constituted of a two-layered film comprising an outer peripheral layer 1B and an inner peripheral layer 1A, and the outer peripheral layer 1B is formed of bi-axially oriented polypropylene of 15-30 μm in thickness. The inner peripheral layer 1A is formed of polyethylene of 10-50 μm in thickness. Roughened surface portions 26 and 27 comprising very small through holes 26A and 27A and recessed parts 26B and 27B formed by pressing a roller with an annularly-fitted sand paper thereagainst, and the oxygen permeability of the two-layered film is set to be 2,500-3,500 cc/m2, 24 hours.

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