Title:
SELF-STANDING PACKAGING BAG
Document Type and Number:
Japanese Patent JP2023117820
Kind Code:
A
Abstract:
To provide a self-standing packaging bag that is useful for realizing mono-materialization and has sufficient bag falling resistance.SOLUTION: The self-standing packaging bag formed by heat-sealing a pair of body parts including a substrate layer and a sealant layer, and a bottom tape including a substrate layer and a sealant layer and having a mountain-fold part, includes: a pair of side seal parts for bonding the pair of body parts to each other in a vertical direction of the self-standing packaging bag; and a bottom seal part for bonding the pair of body parts and the bottom tape to each other in a lateral direction of the self-standing packaging bag. The base layer and the sealant layer are made of the same type of resin material, and a ratio a/L of the minimum width (a) of the bottom seal part to the distance L from a bottom of the body part to the mountain-fold part is 0.15 or more and 0.50 or less. When a boundary line between the bottom seal part and an unsealed part is defined as a bottom seal line, an angle α between the mountain-fold part and the bottom seal line at a point where the mountain-fold part and the bottom seal line intersect is 20° or more and 45°or less.SELECTED DRAWING: Figure 1
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Inventors:
NAGAI AKIRA
ONO YASUKATA
FUJIMOTO YUTO
TAKEI TOSHIRO
ONO YASUKATA
FUJIMOTO YUTO
TAKEI TOSHIRO
Application Number:
JP2022020582A
Publication Date:
August 24, 2023
Filing Date:
February 14, 2022
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
B65D30/16
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Youhei Suzuki
Yoshiki Kuroki
Youhei Suzuki