| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging bag capable of stably discharging steam generated from contents outside when the bag filled with the contents and sealed is heated in a microwave oven. <P>SOLUTION: A self-supporting bag is made of a laminate including at least a sealant layer laminated on one of surfaces of a base layer, with an opening provided at one end and a bottom seal provided on the opposite side and has side seals provided at both ends of the opening. A part to start unsealing for unsealing the bag widthwise is provided at an end close to an opening of one of the side seals. A pinching seal is connected with the lower side seal close to the part to start unsealing. A V-shaped cut is provided at an opening close to the other side seal, and a V-shaped seal with a predetermined width for covering the cut is provided. Alternatively, a tab seal for tearing the bag in parallel to the opening in the direction reverse to the part to start unsealing is connected with an opposite side face to the part to start unsealing on the internal surface of the V-shaped seal. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
