US 12,351,369 B2
Inner plug constituting nozzle and eye drop container
Yoshitoh Tanaka, Yokohama (JP); Asako Kanazawa, Yokohama (JP); and Toyoaki Suzuki, Yokohama (JP)
Assigned to ZACROS Corporation, Tokyo (JP)
Appl. No. 17/793,731
Filed by Fujimori Kogyo Co., Ltd., Tokyo (JP)
PCT Filed Jan. 20, 2021, PCT No. PCT/JP2021/001816
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/149712, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-007831 (JP), filed on Jan. 21, 2020.
Prior Publication US 2023/0088243 A1, Mar. 23, 2023
Int. Cl. B65D 47/18 (2006.01); A61F 9/00 (2006.01); A61J 1/05 (2006.01); B65D 53/02 (2006.01)
CPC B65D 47/18 (2013.01) [A61F 9/0008 (2013.01); A61J 1/05 (2013.01); B65D 53/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An inner plug to be mounted in an opening part of a container body and constituting a nozzle, the inner plug comprising:
a liquid-contacting part having a surface comprising a layer including a cyclic olefin copolymer; and
a cushioning part that is provided in an outer circumferential part in contact with the opening part,
wherein the liquid-contacting part has a leg part which has a cylindrical shape and comes into contact with a cylindrical inner surface of the opening part,
the cushioning part has a cylindrical part provided in an outer circumferential surface of the leg part in contact with the cylindrical inner surface of the opening part,
wherein the liquid-contacting part is configured such that the surface comes into contact with a content of the container body when the inner plug is mounted in the opening part of the container body,
the cushioning part is configured not to contact with the content by being separated by the liquid-contacting part when the inner plug is mounted in the opening part of the container body, and
the cushioning part is constituted of a material of one or more kinds selected from a polyethylene resin, a rubber, and an elastomer.