Title:
PACKAGING BAG FOR HEATING OF MICROWAVE OVEN, AND METHOD OF FILLING AND SEALING THEREOF
Document Type and Number:
Japanese Patent JP2020011757
Kind Code:
A
Abstract:
To provide a packaging bag which prevents contamination of foreign bodies in an insulator chamber, and does not cause contents to be spilled over at the time of vacuum deaerating after filling of the contents, in the packaging bag which is structured so that a front side film 1, an intermediate film 2, and a back side film 3 are superposed in this order, and is assumed between the front side film and the intermediate film to be a content storage chamber A, and is assumed between the intermediate film and the back side film to be the insulator chamber B.SOLUTION: An intermediate film and a back side film are mutually sealed all round except a vacuum deaerating hole 23y. A content storage chamber is deaerated in a vacuum after filling contents in the content storage chamber, and an insulator chamber is deaerated in the vacuum so that expansion of the insulator chamber that accompanies by the vacuum deaerating of the content storage chamber is prevented, and that the contents can be prevented from being spilled over. And a fin C which protrudes to the outside of a packaging bag is provided in a front side film, and steam discharge means 1x when heated with a microwave oven is structured by bending a part of a seal line constituting the fin.SELECTED DRAWING: Figure 1
Inventors:
AOKI KAZUMI
Application Number:
JP2018135720A
Publication Date:
January 23, 2020
Filing Date:
July 19, 2018
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
B65D81/34; B65D30/08; B65D81/38