Sun A. Kaken Co., Ltd.

Sun A. Chemical Industries Co., Ltd.

Takuji Sugiyama

Daisuke Uratani

Tomohito Hayama

Tetsuro Ichikawa

Kazuo Ariyoshi

Souichirou Katayama

Tetsurou Kawamoto

Masafumi Oishi

Shigeru Ito

A packaging body for heat processing a material retained therein is basically formed of a plastic base material having side joining sections, and end sides. The side joining sections and end sides are superposed and connected together to form a bag for filling the material. A sealant layer is deposited on at least one of the end sides to connect the end sides together through the sealant layer to thereby form a vapor communication joining section at the end sides. The sealant layer has a peeling off property from 0 to 1,200 gf/15 mm at 90&#xb0; C. and a peeling off property of equal to or more than 3 kgf/15 mm at a room temperature. Thus, only when the packaging body is heated more than 90&#xb0; C., the vapor communication joining section is only opened to release pressure inside the packaging body.

Packaging body for heating processing

A container packaging having a flanged container, and a cover member with which the container is tightly closed by heat sealing at the flange after being filled with a content stuff. This packaging can be easily opened to take out the content by separating the cover member with a human hand force in such a manner that as an end of the cover member is pulled upward, ply separation of a cohesion-destructive plastic layer progresses, or a portion of an outer peripheral threadlike protrusion reduced in thickness is broken and ply separation of cohesion-destructive plastic layer thereafter progresses to the position of an inner peripheral threadlike protrusion, and a portion of this protrusion reduced in thickness is broken.

Easy-opening container packaging

Growing community of inventors

Shizuoka, Japan

Takuji Sugiyama