| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag for heating, which does not burst due to an inner pressure generated by steam when the packaging bag containing a watery article, such as a moistened towel, is heated on a microwave oven or the like. <P>SOLUTION: The packaging bag is made of a laminate 10 consisting of a base material layer 11 and a heat adhesive resin layer 12. A mitered heat adhesive part 2 and an edge heat adhesive part 3 are formed on the laminate 10 to make it into a bag of long and narrow pillow shape. A partial peel-off layer 4, 4', or 4" is formed between the base material layer 11 and the heat adhesive resin layer 12 at the longitudinal center of the mitered heat adhesive part 2 on one surface of the laminate 10, where the partial peel-off layer extends from a point deeper inside than the inner end of the mitered heat adhesive part 2 by a given distance to the edge of the laminate 10 that is parallel with the mitered heat adhesive part 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
