US 11,988,293 B2
Valve and package provided with the same
Miho Sasaki, Tokyo (JP); and Atsuko Takahagi, Tokyo (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Appl. No. 17/285,016
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
PCT Filed Oct. 15, 2019, PCT No. PCT/JP2019/040368
§ 371(c)(1), (2) Date Apr. 13, 2021,
PCT Pub. No. WO2020/080325, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-194191 (JP), filed on Oct. 15, 2018.
Prior Publication US 2021/0341068 A1, Nov. 4, 2021
Int. Cl. H01M 50/342 (2021.01); B65D 77/22 (2006.01); F16K 17/04 (2006.01); F16K 17/16 (2006.01)
CPC F16K 17/048 (2013.01) [B65D 77/225 (2013.01); F16K 17/16 (2013.01); H01M 50/3425 (2021.01); F16K 17/0406 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A valve for forming a passage through which inside and outside of a packaging container constituted by resin molded articles or films are in communication with each other, the valve comprising:
a breakable valve that is arranged so as to block the passage and splits open when internal pressure of the packaging container increases due to gas generated inside the packaging container;
a check valve that is in the passage and on an outer side of the breakable valve with respect to the inside of the packaging container and through which the gas is discharged from the inside of the packaging container to the outside of the packaging container according to internal pressure of the packaging container after the breakable valve has split open;
an attachment portion that delimits at least a portion of the passage and is fixed to the packaging container through heat-sealing in a state of being sandwiched between the resin molded articles or the films constituting the packaging container; and
a tubular portion that is arranged outside the packaging container, is continuous with the attachment portion, and delimits another portion of the passage,
wherein the check valve is arranged inside the tubular portion.