Title:
包装袋、および包装袋を用いた包装品の製造方法。
Document Type and Number:
Japanese Patent JP7149518
Kind Code:
B2
Abstract:
The present invention prevents the creation of pinholes in a packaging bag. A packaging bag in which a pair of resin films that face each other are sealed on three sides using a seal part formed at peripheral edges of the resin films, and in which an opening is formed at the upper edge, wherein: the seal part comprises a pair of side seal parts, a bottom seal part, and a pair of protruding seal parts; the pair of side seal parts are provided along the right-side edge and the left-side edge, respectively, of the pair of resin films; the bottom seal part is provided so as to connect the pair of side seal parts together; the pair of protruding seal parts are provided so as to protrude toward the width-direction inner side of the packaging bag at respective upper ends; the opening is formed between the pair of protruding seal parts; and the width of the upper end of the opening is less than the interval between the pair of protruding seal parts at lower ends thereof.
Inventors:
Hirofumi Sokunuma
Application Number:
JP2018177555A
Publication Date:
October 07, 2022
Filing Date:
September 21, 2018
Export Citation:
Assignee:
Kyoraku Co., Ltd.
NAFCO Company Limited
NAFCO Company Limited
International Classes:
B65D30/10
Domestic Patent References:
| JP2008074466A | ||||
| JP2008062961A | ||||
| JP3034765U | ||||
| JP2017222383A |
Attorney, Agent or Firm:
SK Patent Attorney Corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito
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