| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flat plastic pouch capable of being manufactured inexpensively and efficiently, and capable of keeping an automatic opening mechanism for automatically opening by a rise in internal pressure in the pouch stably at a high position without using an auxiliary device when being placed flat in a microwave oven for cooking. <P>SOLUTION: At least one of a front film and a rear film constituting the plastic pouch is folded over a full length in a width direction of the pouch and the periphery is heat-sealed, thereby forming at least one fold communicating with a body of the pouch. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
