Title:
MICROWAVABLE PACKAGING BAG AND BAG-MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/121833
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a microwavable packaging bag for preventing leakage of contents and escape of steam from an occluded part, while reliably venting steam from a steam-venting seal part; a bag-manufacturing apparatus; and a bag-manufacturing method. This microwavable packaging bag 10 is characterized by comprising a main body 20 formed to bag shape by thermally welding together peripheral edge portions of one or more films, a steam-venting seal part 18e situated at a prescribed location in a first direction of the main body 20, formed by welding together the inside surfaces of the film in such a way as to separate due to a rise in internal pressure when the packaging bag is heated in a sealed state, and an occluded part 23 including a pair of engaging members 25, 26 for opening and closing the main body 20, the occluded part 23 being disposed across the width of the main body 20 in a second direction, at a location offset farther towards the outside from the steam-venting seal part 18e of the main body 20, and being formed such that one of engaging members 25, 26 has an unwelded part 27 which is not welded to the main body, at the inside in the first direction.
Inventors:
WACHI HIDEAKI (JP)
Application Number:
PCT/JP2016/052385
Publication Date:
August 04, 2016
Filing Date:
January 27, 2016
Export Citation:
Assignee:
KYORAKU CO LTD (JP)
International Classes:
B65D81/34; B31B1/90; B31B29/74; B65D33/25
Foreign References:
| JP2009067446A | 2009-04-02 | |||
| JP2002080072A | 2002-03-19 | |||
| JPH0169773U | 1989-05-09 | |||
| JPH11189278A | 1999-07-13 | |||
| JP2003276098A | 2003-09-30 | |||
| JP2006315760A | 2006-11-24 |
Attorney, Agent or Firm:
SAKAMOTO TOMOHIRO (JP)
Tomohiro Sakamoto (JP)
Tomohiro Sakamoto (JP)
Download PDF: