粉粒体用紙袋

Japanese Patent JP7299638

B2

To provide a paper bag for a granule material, which is a paper bag filled with a food-derived granular material, capable of rapidly discharging a component such as air with the granular material to the outside of a system when filled, reducing the weight at the time of disposal after use; and that is excellent in handling in a manufacturing process without consideration for reducing a basis weight of a reinforcing material to prevent leakage of a filler.SOLUTION: In a paper bag in which one end of a multi-layer cylindrical body composed of a paper layer in which at least the outermost layer has a specific air permeability is a mouth sealing part and the other end is a mouth unsealing part, an open end of the mouth sealing part and/or the mouth unsealing part is crushed, both ends are made into a triangular shape including upper paper 2 and lower paper 3, an inner patch 6 large enough to cover the upper paper and the lower paper of both ends from above is joined, and between the inner patch and the upper paper and lower paper, a one-round valve 7 having a hot-melt adhesive applied on the inner peripheral whole surface is disposed.SELECTED DRAWING: Figure 3

Hideki Kishimoto
Takaaki Dan

JP2021133017A

June 28, 2023

July 08, 2021

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Ishikawa Co., Ltd.

B65D30/10; B65D30/02; B65D30/24

JP2020011771A
JP2020151968A
JP2003026190A
JP2000054283A
JP2013147255A

Michiharu Soga
Jun Kajinami
Shunichi Ueda
Junichiro Yoshida
Takahiro Matsuoka

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