US 12,214,932 B2
Zipper tape and container equipped with zipper tape
Hiroaki Yoshimura, Chiba (JP)
Assigned to IDEMITSU UNITECH CO., LTD., Tokyo (JP)
Appl. No. 17/614,581
Filed by IDEMITSU UNITECH CO., LTD., Tokyo (JP)
PCT Filed May 28, 2020, PCT No. PCT/JP2020/021189
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/241777, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-102598 (JP), filed on May 31, 2019; and application No. 2020-029300 (JP), filed on Feb. 25, 2020.
Prior Publication US 2022/0227540 A1, Jul. 21, 2022
Int. Cl. B65D 33/25 (2006.01); A44B 19/16 (2006.01); B65D 65/46 (2006.01); C08L 67/02 (2006.01)
CPC B65D 33/2508 (2013.01) [A44B 19/16 (2013.01); B65D 65/466 (2013.01); C08L 67/02 (2013.01); C08L 2201/06 (2013.01); C08L 2205/025 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A zipper tape in an elongated shape, comprising, in a cross-sectional shape, a pair of base strips and engagement portions projecting from respective surfaces facing each other of the pair of base strips, the engagement portions being engageable with each other, wherein
at least the engagement portions each comprise a first biodegradable resin composition having a yield strain of 15% or more during a tensile test, and
wherein the first biodegradable resin composition comprises, a content of polybutylene succinate (PBS) in a range of 60 mass % to 90 mass % and a content of poly (butylene adipate/terephthalate) (PBAT) in a range of 10 mass % to 40 mass %.