| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve problems with a conventional automatic hole-making bag for a microwave oven that the bag is time-consuming for a customer and a method of use is possibly mistaken, and the seal strength is weak and the bag can be broken when the bag is made of an easy-open film though the bag is formed in a method for sealing preliminarily opened vent holes by a tape and peeling the tape when the bag is heated in the microwave oven, a method for devising the seal shape by using the easy-open film or a method for forming a portion of weak seal strength, etc. SOLUTION: In a gusset type bag product using a heat-seal type OP easy to peel the seal on a surface layer of a plastic laminate film, small holes for vent are made in a folding part of the gusset, both ends of the gusset are sealed to constitute a gusset shape with sealed small holes. When the bag in a sealed condition is placed in the microwave oven, breakage of the bag can be prevented even when the steam pressure is generated in the bag.</p> |
