US 12,295,910 B2
Resin container and resin container connected body
Hiroyuki Koshiro, Osaka (JP); and Naohiro Ikeda, Osaka (JP)
Assigned to Rohto Pharmaceutical Co., Ltd., Osaka (JP)
Appl. No. 17/770,298
Filed by Rohto Pharmaceutical Co., Ltd., Osaka (JP)
PCT Filed Oct. 21, 2019, PCT No. PCT/JP2019/041316
§ 371(c)(1), (2) Date Oct. 27, 2022,
PCT Pub. No. WO2021/079404, PCT Pub. Date Apr. 29, 2021.
Prior Publication US 2023/0094229 A1, Mar. 30, 2023
Int. Cl. A61J 1/06 (2006.01); A61J 1/14 (2023.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B65D 1/09 (2006.01)
CPC A61J 1/067 (2013.01) [A61J 1/1412 (2013.01); B32B 27/08 (2013.01); B32B 27/325 (2013.01); B65D 1/095 (2013.01); B32B 2250/02 (2013.01); B32B 2250/242 (2013.01); B32B 2270/00 (2013.01); B32B 2323/046 (2013.01); B32B 2439/80 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A resin container, comprising:
a container body including a storage portion configured to store liquid content and an outlet for the liquid content; and
a lid configured to seal the container body by blocking the outlet,
wherein the container body and the lid are made of a resin,
the container body has a multilayer structure including a first layer being an innermost layer that comes into contact with the liquid content and a second layer that is in contact with the first layer from an outer side of the first layer,
the first layer includes a cyclic olefin copolymer and a linear low-density polyethylene resin, with more of the cyclic olefin copolymer being included than the linear low-density polyethylene resin, and
the second layer includes a low-density polyethylene resin,
a main monomer of the linear low-density polyethylene resin is an ethylene,
a comonomer of the linear low-density polyethylene resin introduces a short chain branch in the molecular structure, and
the short chain branch is introduced at a ration of from 5 to 100 per 1000 units of structural units of the ethylene.