Title:
Packaging bag
Document Type and Number:
Japanese Patent JP6026747
Kind Code:
B2
Abstract:
A packaging bag with a steam-venting-related improvement is provided. Said packaging bag has a seal part (8a) formed where an edge of a film that constitutes a top surface and an edge of a film that constitutes a bottom surface are sealed together. This packaging bag is characterized by having a steam-venting seal part (7) that comprises part of the aforementioned seal part (8a) formed so as to protrude inwards with a curved shape. This packaging bag is further characterized in that: the width of the seal, at least in the direction inwards from the abovementioned seal part (8a), is narrower at the tip of the steam-venting seal part (7) than in the other sections of the steam-venting seal part (7); and when the packaging bag inflates and the steam-venting seal part (7) comes apart, the aforementioned other sections thereof remain and form edge parts (7a) protruding inwards from the seal part (8a).
Inventors:
Tsuchiya
Application Number:
JP2012019255A
Publication Date:
November 16, 2016
Filing Date:
January 31, 2012
Export Citation:
Assignee:
Kyoraku Co., Ltd.
Nafco Company Limited
Nafco Company Limited
International Classes:
B65D81/34; B65D33/01
Domestic Patent References:
| JP2002080072A | ||||
| JP2004106868A | ||||
| JP11029181A | ||||
| JP2006224975A | ||||
| JP2000226078A | ||||
| JP2005082172A | ||||
| JP2004524241A | ||||
| JP2005320023A |
Attorney, Agent or Firm:
Takao Maruyama