# US 10,308,389 B2 · Delaminatable container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,389 B2 - Document ID: US10308389B2 - Status: Granted - Kind: B2 - Application number: 15/100,151 - Filed: 2014-11-20 - Published: 2017-02-09 - Granted: 2019-06-04 - Earliest claimed: 2013-11-27 - Assignees: Kyoraku Co., Ltd. - Applicants: Kyoraku Co., Ltd. - Inventors: Shinsuke Taruno - Web page: https://patentgrep.com/patent/US10308389B2 ## CPC - B65D 1/0215: {multilayered (B65D81/3837 takes precedence)} - B65D 1/023: {Neck construction} - B65D 1/0246: {Closure retaining means, e.g. beads, screw-threads} - B65D 1/0276: {having a continuous contact surface, e.g. Champagne-type bottom} - B65D 23/02: Linings or internal coatings - B65D 41/0442: {Collars or rings (B65D41/0457 takes precedence)} - B65D 77/06: Liquids or semi-liquids {or other materials or articles} enclosed in flexible containers disposed within rigid containers - B65D 77/225: {Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element} - B65D 85/72: for edible or potable liquids, semiliquids, or plastic or pasty materials - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A delaminatable container excellent in productivity is provided. According to an exemplary aspect, a delaminatable container, includes a container body having an outer shell and an inner bag, the inner bag delaminating from the outer shell and being shrunk with a decrease in contents, wherein the container body includes a bottom seal protrusion protruding from a bottom surface of a storage portion to store the contents, and the bottom seal protrusion is a sealing portion of, in blow molding using a cylindrical laminated parison provided with an outer layer constituting the outer shell and an inner layer constituting the inner bag, the laminated parison and is bent. ## Claims ### Claim 1 A delaminatable container, comprising: a container body having an outer shell and an inner bag, the inner bag delaminating from the outer shell and being shrunk with a decrease in contents, wherein the container body includes a bottom seal protrusion protruding from a bottom surface of a storage portion to store the contents, and the bottom seal protrusion is a sealing portion of, in blow molding using a cylindrical laminated parison provided with an outer layer constituting the outer shell and an inner layer constituting the inner bag, the laminated parison and is bent the bottom seal protrusion includes, in order from a side of the bottom surface, a thinner portion and a thicker portion having a thickness greater than that of the thinner portion, and the thinner portion is provided across the whole of the bottom seal protrusion in longitudinal direction, and the bottom seal protrusion is bent in the thinner portion so that the whole of the thicker portion is bent toward one direction. ### Claim 2 (depends on 1) The delaminatable container according to claim 1, wherein the bottom seal protrusion includes a base portion on a side closer to the bottom surface than the thinner portion, the base portion being thicker than the thinner portion. ### Claim 3 (depends on 1) The delaminatable container according to claims 1, wherein the bottom surface includes a concave region and a peripheral region provided surrounding the concave region, and the bottom seal protrusion is provided in the concave region. ### Claim 4 (depends on 3) The delaminatable container according to claim 3, wherein the bottom seal protrusion is configured not to protrude from a plane defined by the peripheral region in a state of being bent. ### Claim 5 (depends on 3) The delaminatable container according to claim 3, wherein the concave region is provided across the entire bottom surface in a longitudinal direction of the bottom seal protrusion. ### Claim 6 A delaminatable container, comprising: a container body provided with a storage portion to store contents and a mouth to deliver the contents from the storage portion, the storage portion and the mouth having an outer layer and an inner layer, the inner layer delaminating from the outer layer and being shrunk with a decrease in the contents, wherein the mouth includes an enlarged diameter portion provided at an end of the mouth and an inner layer support portion provided in a position closer to the storage portion than the enlarged diameter portion and inhibiting slip down of the inner layer the inner layer support portion is formed by providing a narrow part having a smaller diameter comparing with upper and lower parts nearby the inner layer support portion in the mouth. ### Claim 7 (depends on 6) The delaminatable container according to claim 6, wherein the storage portion includes a main portion having an approximately constant cross-sectional shape in longitudinal directions of the storage portion and a shoulder portion linking the main portion to the mouth, the shoulder portion or a boundary between the shoulder portion and the main portion includes a bent portion, and wherein the bent portion has a bending angle of 140 degrees or less and has a radius of curvature of 4 mm or less on a side of a container inner surface in the bent portion. ### Claim 8 (depends on 7) The delaminatable container according to claim 7, wherein the bending angle is 120 degrees or less. ### Claim 9 (depends on 7) The delaminatable container according to claim 7, wherein the radius of curvature is 2 mm or less. ### Claim 10 (depends on 7) The delaminatable container according to claim 7, wherein the bent portion is provided in a position where a distance from a container center axis to the container inner surface in the bent portion is 1.3 times or more of a distance from the container center axis to the container inner surface in the mouth. ### Claim 11 (depends on 7) The delaminatable container according to claim 7, wherein the mouth has a thickness from 0.45 to 0.50 mm, the bent portion has a thickness from 0.25 to 0.30 mm, and the main portion has a thickness from 0.15 to 0.20 mm.