Mitsubishi Gas Chemical Company, Inc.

Futoshi Nakaya

Hideyuki Takahashi

Hidetoshi Hatakeyama

Yuichi Fujii

Masaki Nagata

Hidechika Wakabayashi

Yasuo Sugihara

Akira Hosomi

A method of making a sheet-shaped oxygen absorber includes preparing an oxygen-absorbing resin sheet having opposed first and second surfaces and including an oxygen-absorbing composition in a thermoplastic resin; applying first and second covering members to and in contact with the first and second surfaces, respectively, of the oxygen-absorbing resin sheet to form a laminated structure, at least one of the covering members being air-permeable; and ultrasonically heat sealing the first covering member to the second covering member along the periphery of a closed planar geometric figure, encapsulating at least a part of the oxygen-absorbing resin sheet and cutting the first and second covering members where the first and second covering members are sealed to each other, along the periphery of the closed planar geometric figure, to produce the sheet-shaped oxygen absorber.

Method of making a sheet-shaped oxygen absorber

A sheet shaped oxygen absorbing member according to the present invention comprises a lamination in the order of a separator layer, a base layer having an adhesive layer, an oxygen absorbing layer and a gas permeable layer, the gas permeable layer being directly secured to the base layer at the periphery of the lamination, and is structured to be capable of attaching by readily peeling off from the separator layer.

Sheet shaped oxygen absorbing member and method for manufacture thereof

A packing for a lid to seal a container opening is provided comprising a packing body, including a packing material and a low gas permeable sheet laminated on a surface of the packing material adapted to face a container, a gas permeable sheet provided on a surface of the packing body adapted to face the container and an oxygen absorbing agent provided between the packing material and the gas permeable sheet, adjacent the gas permeable sheet.

Packing for lid

A food-preserving agent comprising an oxygen absorbent and a compound represented by the following structural formula (I): ##STR1## , wherein n is an integer of 2 to 4 and X is H or CH.sub.3, can remove generated acetaldehyde effective, thereby preserving food without any fear of disagreeable odor for a long duration.

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Tokyo, Japan

Futoshi Nakaya