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US 5,376,392 AGranted
Food packaging bag
AssigneeKohjin Co., Ltd.
InventorsShigeyoshi Ikegami, Hisashi Kojyoh, Iu Uchida, Tadayoshi Yamazaki, Toshiaki Miyajima
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AssigneeKohjin Co., Ltd.
InventorsShigeyoshi Ikegami, Hisashi Kojyoh, Iu Uchida, Tadayoshi Yamazaki, Toshiaki Miyajima
Estimating the term…
The present invention relates to a food packaging bag comprising a water-resistant perforated sheet part which composes of at least a part of an outer layer of the bag, a moisture permeable waterproof film which is laminated by bonding in part to an inside of the perforated sheet part as an inner layer to form a moisture permeable waterproof part, and a waterproof sheet part which composes of the rest of the outer layer part. Further, when, if desired, an absorbent sheet layer is provided on at least a part of the inside of the waterproof sheet part, the functions of the moisture permeable waterproof film such as moisture permeability are scarcely impaired when the packed food is heat-cooked, and the moisture permeable waterproof film weak in strength is seldom broken by scraping distribution or bursting during cooking with heat. Unsticky, particularly the bottom of the food being unsticky too, as to the bag having the absorbent sheet at the bottom, and hot cooked foods can be obtained through the processes wherein the food is packed in the bag, the opening is completely heat-sealed and it is put into hot water, or the bag is heated in a microwave oven to steam cook, or the bag is untightly sealed by simply folding or using laveIs and it is heat-cooked in the microwave oven to heat-cook.
A food packaging bag comprising an outer layer formed in a shape of bag, said bag having an opening for receiving food therein, said outer layer including a waterproof section with perforations and a nonperforated waterproof section, and a moisture permeable waterproof film bonded in part to an inner surface of said waterproof section with perforations and covering said perforations.
A food packaging bag comprising an outer layer formed in a shape of bag, said bag having an opening for receiving food therein, said outer layer including a waterproof section with perforations and a nonperforated waterproof section, an inner layer of absorbent material provided on at least part of said nonperforated waterproof section, and a moisture permeable waterproof film bonded in part to an inner surface of said waterproof section with perforations and covering said perforations.
A method for cooking a food which comprises packaging a food to be cooked in a food packaging bag comprising an outer layer formed in a shape of bag, said bag having an opening for receiving food therein, said outer layer including a waterproof section with perforations and a nonperforated waterproof section, and a moisture permeable waterproof film bonded in part to an inner surface of said waterproof section with perforations and covering said perforations, sealing said packaging bag with said food contained therein, and putting said packaging bag into hot water.
A method for cooking a food which comprises packaging a food to be cooked In a food packaging bag comprising an outer layer formed in a shape of bag, said bag having an opening for receiving food therein, said outer layer including a waterproof section with perforations and a nonperforated waterproof section, and a moisture permeable waterproof film bonded in part to an inner surface of said waterproof section with perforations and covering said perforations, and heat-cooking said food by high frequency electromagnetic wave heating.
A method for cooking a food which comprises packaging food to be cooked in a packaging bag comprising an outer layer formed in a shape of bag, said bag having an opening for receiving food therein, said outer layer including a waterproof section with perforations and a nonperforated waterproof section, an inner layer of absorbent material provided on at least part of said nonperforated waterproof section, and a moisture permeable waterproof film bonded in part to an inner surface of said waterproof section with perforations and covering said perforations, and heat-cooking said food by high frequency electromagnetic wave heating.
Dependencies are inferred from the claim text.