US 12,012,256 B2
Dehumidification bag and preparation method thereof
Guojin Sun, Wenzhou (CN); Can Chen, Wenzhou (CN); Wenming Zeng, Wenzhou (CN); Zhigang Xie, Wenzhou (CN); and Miao Ren, Wenzhou (CN)
Assigned to ZHEJIANG GOLDSTONE PACKAGING CO., LTD., (CN)
Appl. No. 17/057,312
Filed by ZHEJIANG GOLDSTONE PACKAGING CO., LTD., Wenzhou (CN)
PCT Filed Sep. 16, 2020, PCT No. PCT/CN2020/115569
§ 371(c)(1), (2) Date Nov. 20, 2020,
PCT Pub. No. WO2021/243883, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 202010497330.1 (CN), filed on Jun. 3, 2020.
Prior Publication US 2023/0081227 A1, Mar. 16, 2023
Int. Cl. B65D 33/01 (2006.01); B32B 3/08 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 37/12 (2006.01); B32B 38/00 (2006.01); B65D 33/25 (2006.01); B65D 75/00 (2006.01)
CPC B65D 33/01 (2013.01) [B32B 3/08 (2013.01); B32B 5/022 (2013.01); B32B 7/12 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 37/1207 (2013.01); B32B 38/164 (2013.01); B65D 33/2508 (2013.01); B65D 75/008 (2013.01); B32B 2255/10 (2013.01); B32B 2255/205 (2013.01); B32B 2262/0253 (2013.01); B32B 2307/31 (2013.01); B32B 2307/724 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/732 (2013.01); B32B 2309/02 (2013.01); B32B 2311/24 (2013.01); B32B 2323/04 (2013.01); B32B 2323/10 (2013.01); B32B 2367/00 (2013.01); B32B 2377/00 (2013.01); B32B 2439/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A dehumidification bag, comprising:
a bag body, comprising a first side sheet, a second side sheet and a bottom sheet, wherein the first side sheet is composed of a composite film; the second side sheet comprises an air-permeability film and the composite film located below air-permeability film, the air-permeability film and the composite film are partially overlapped together by heat-sealing; the bottom sheet is composed of the composite film, the bottom sheet can support the bag body to achieve self-standing; wherein the air-permeability film is a non-woven fabric or spunbond polyethylene;
a moisture-proof layer, covering all of the air-permeability film facing the outside of the bag body, for preventing the air-permeability film from contacting with the outside air, wherein the moisture-proof layer is tearable; and
a storage compartment formed by heat-sealing the first side sheet, the second side sheet and the bottom sheet,
wherein the bag body is provided with an openable and closeable sealing structure formed by subjecting the lower ends of the first side sheet, the second side sheet and the moisture-proof layer to transverse heat-sealing.