To provide a packaging bag for a microwave oven and a method for manufacture the same in which a food not requiring its heating is sealingly closed and packaged, the temperature of the content is not increased even if the food is heated in the oven together with other foods and further a breakage of bag or an electric spark can be prevented.
On both surfaces of a packaging bag are applied laminated films 10 in which a plastic film layer 5, a heat seal agent layer or adhesive agent layer 4, an aluminum foil layer 2, an adhesive agent layer 3, a plastic film layer 1 and a thermo-adhering resin layer 6 are laminated in sequence from outer side and the circumferences are heat sealed to form a packaging bag. In addition, the packaging bag is preferably made such that the aluminum foil layer 2 is not present at the surrounding heat seal section. Such a packaging bag is made such that the laminated film of an intermediate layer is made first, the film is cut into such a shape as one corresponding to a content filling area, the heat seal section is laminated on the outer plastic film layer 5 while being spaced apart, the thermo-adhering resin layer 6 is laminated on it to make the laminated film and it can be easily manufactured by a bag-making method.
KOMIYA YASUTOYO
KOBAYASHI KATSUAKI
HIDAKA KAZUHIRO
AKITA NORIO
