Patent ID: 6855356
Filing Date: 2005-02-15
Classification: B65B,B65D

Abstract:
1. A packaging body for heat processing a material retained therein, comprising: a plastic base material having side joining sections, and end sides, said side joining sections and end sides being superposed and connected together to form a bag for filling the material therein, and a sealant layer interposed between the end sides to connect the end sides together therethrough to thereby form a vapor communication joining section at the end sides, said sealant layer providing a peeling off property from 0 to 1,200 gf/15 mm at 90° C. and a peeling off property of equal to or more than 3 kgf/15 mm at 23° C. so that only when the packaging body is heated more than 90° C., the vapor communication joining section is only opened to release pressure inside the packaging body.