# US 10,766,183 B2 · Liquid blow-molding method for delamination container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,183 B2 - Document ID: US10766183B2 - Status: Granted - Kind: B2 - Application number: 15/528,906 - Filed: 2015-10-13 - Published: 2017-11-02 - Granted: 2020-09-08 - Earliest claimed: 2014-11-27 - Assignees: Yoshino Kogyosho Co., Ltd. - Applicants: Yuichi Okuyama; Kenichi Suyama - Inventors: Yuichi Okuyama; Kenichi Suyama - Web page: https://patentgrep.com/patent/US10766183B2 ## CPC - B29C 49/46: characterised by using particular environment or blow fluids other than air - B29C 49/087: {Means for providing controlled or limited stretch ratio} - B29C 49/12: Stretching rods - B29C 49/22: using multilayered preforms or parisons - B29C 49/06: Injection blow-moulding - B29C 2049/4664: {staying in the final article} - B29C 2949/0715: the preform having one end closed - B29C 2949/3088: Bonding - B29L 2031/712: {Containers; Packaging elements or accessories, Packages (closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418)} - B29L 2031/7158: {Bottles} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A liquid blow-molding method for molding a delamination container from a resin container material. The resin container material includes an outer layer, an inner layer, and an ambient air introduction hole. The delamination container includes an outer layer body and an inner layer body, which is laminated on the inner side of the outer layer body in a manner such that the inner layer body is separatable from the outer layer body. The liquid blow-molding method includes the container molding step of molding the container material into the delamination container by supplying a pressurized liquid into the container material; and the inner layer body separation step of separating the inner layer body from the outer layer body by sucking the liquid out of the delamination container. ## Claims ### Claim 1 A liquid blow-molding method for molding a delamination container from a resin container material, the resin container material including an outer layer, an inner layer, and an ambient air introduction hole provided in the outer layer to communicate between the outer layer and the inner layer, and the delamination container including an outer layer body and an inner layer body laminated on an inner side of the outer layer body in a manner such that the inner layer body is separatable from the outer layer body, the liquid blow-molding method comprising: a container molding step of molding the resin container material into the delamination container by actuating a plunger pump in a positive direction and supplying a pressurized liquid into the resin container material; and an inner layer body separation step of separating the inner layer body from the outer layer body by actuating the plunger pump in a reverse direction and sucking the pressurized liquid, which has been filled in the delamination container, out of the delamination. ### Claim 2 (depends on 1) The liquid blow-molding method for molding a delamination container according to claim 1, the liquid blow-molding method further comprising: an inner layer body return step, performed after the inner layer body separation step, of laminating the inner layer body on an inner surface of the outer layer body by supplying the pressurized liquid again into the delamination container, in which the inner layer body has been separated from the outer layer body. ### Claim 3 (depends on 2) The liquid blow-molding method for molding a delamination container according to claim 2, wherein the pressurized liquid supplied into the delamination container in the inner layer body return step is less in amount than the pressurized liquid supplied into the resin container material in the container molding step. ### Claim 4 (depends on 2) The liquid blow-molding method for molding a delamination container according to claim 2, wherein, in the container molding step, the pressurized liquid is supplied into the resin container material by actuating a plunger pump in a positive direction, in the inner layer body separation step, the pressurized liquid, which has been filled in the delamination container, is sucked out of the delamination container by actuating the plunger pump in a reverse direction, and in the inner layer body return step, the pressurized liquid is supplied into the delamination container by actuating the plunger pump in the positive direction again. ### Claim 5 (depends on 3) The liquid blow-molding method for molding a delamination container according to claim 3, wherein, in the container molding step, the pressurized liquid is supplied into the resin container material by actuating a plunger pump in a positive direction, in the inner layer body separation step, the pressurized liquid, which has been filled in the delamination container, is sucked out of the delamination container by actuating the plunger pump in a reverse direction, and in the inner layer body return step, the pressurized liquid is supplied into the delamination container by actuating the plunger pump in the positive direction again. ### Claim 6 (depends on 1) The liquid blow-molding method for molding a delamination container according to claim 1, wherein, the resin container material comprises a preform having a bottomed tubular shape. ### Claim 7 (depends on 6) The liquid blow-molding method for molding a delamination container according to claim 6, the liquid blow-molding method further comprising: a stretching step, performed prior to the container molding step, of stretching the preform in an axis direction by a stretching rod, wherein the inner layer body separation step is performed after the stretching rod is withdrawn from the delamination container. ### Claim 8 (depends on 2) The liquid blow-molding method for molding a delamination container according to claim 2, wherein, the resin container material comprises a preform having a bottomed tubular shape. ### Claim 9 (depends on 3) The liquid blow-molding method for molding a delamination container according to claim 3, wherein, the resin container material comprises a preform having a bottomed tubular shape. ### Claim 10 (depends on 4) The liquid blow-molding method for molding a delamination container according to claim 4, wherein, the resin container material comprises a preform having a bottomed tubular shape. ### Claim 11 (depends on 5) The liquid blow-molding method for molding a delamination container according to claim 5, wherein, the resin container material comprises a preform having a bottomed tubular shape. ### Claim 12 (depends on 8) The liquid blow-molding method for molding a delamination container according to claim 8, the liquid blow-molding method further comprising: a stretching step, performed prior to the container molding step, of stretching the preform in an axis direction by a stretching rod, wherein the inner layer body separation step is performed after the stretching rod is withdrawn from the delamination container. ### Claim 13 (depends on 9) The liquid blow-molding method for molding a delamination container according to claim 9, the liquid blow-molding method further comprising: a stretching step, performed prior to the container molding step, of stretching the preform in an axis direction by a stretching rod, wherein the inner layer body separation step is performed after the stretching rod is withdrawn from the delamination container. ### Claim 14 (depends on 10) The liquid blow-molding method for molding a delamination container according to claim 10, the liquid blow-molding method further comprising: a stretching step, performed prior to the container molding step, of stretching the preform in an axis direction by a stretching rod, wherein the inner layer body separation step is performed after the stretching rod is withdrawn from the delamination container. ### Claim 15 (depends on 11) The liquid blow-molding method for molding a delamination container according to claim 11, the liquid blow-molding method further comprising: a stretching step, performed prior to the container molding step, of stretching the preform in an axis direction by a stretching rod, wherein the inner layer body separation step is performed after the stretching rod is withdrawn from the delamination container.