US 12,122,560 B2
Zipper tape, bag provided with zipper tape, and method for manufacturing bag provided with zipper tape
Takumi Todaka, Tokyo (JP); and Ryo Katada, Tokyo (JP)
Assigned to IDEMITSU UNITECH CO., LTD., Tokyo (JP)
Appl. No. 17/794,857
Filed by IDEMITSU UNITECH CO., LTD., Tokyo (JP)
PCT Filed Jan. 22, 2021, PCT No. PCT/JP2021/002272
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/149807, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-010324 (JP), filed on Jan. 24, 2020.
Prior Publication US 2023/0065515 A1, Mar. 2, 2023
Int. Cl. B65D 33/25 (2006.01); A44B 19/16 (2006.01); B31B 70/14 (2017.01); B31B 70/64 (2017.01); B31B 70/81 (2017.01); B65D 75/66 (2006.01)
CPC B65D 33/2533 (2013.01) [A44B 19/16 (2013.01); B31B 70/14 (2017.08); B31B 70/64 (2017.08); B31B 70/8131 (2017.08); B65D 33/2583 (2013.01); B65D 75/66 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A zipper tape comprising:
a zipper tape body comprising: a first base strip; a second base strip partially facing the first base strip and having a region not facing the first base strip; and a first engagement portion and a second engagement portion being mutually engageable and projecting from the first base strip and the second base strip, respectively; and
a cutting strip provided in a region where the second base strip does not face the first base strip, wherein
the zipper tape body is formed of a first resin composition whose main component is a polyolefin resin, and
the cutting strip consists of:
a cutting strip body formed of a second resin composition whose main component is the polyolefin resin; and
a peelable layer layered on at least a part of at least a surface of the cutting strip body facing the second base strip, the peelable layer being formed of a third resin composition having peelability with respect to the polyolefin resin.