# US 2004/0069735 A1 · Blow-molded container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0069735 A1 - Document ID: US20040069735A1 - Status: Published application - Kind: A1 - Application number: 10/432,873 - Filed: 2003-07-11 - Published: 2004-04-15 - Earliest claimed: 2001-10-31 - Assignees: Yoshino Kogyosho Co., Ltd. - Inventors: Masashi Yoneyama; Hiroyuki Nakamura; Masato Seguchi; Takayuki Goto - Web page: https://patentgrep.com/patent/US20040069735A1 ## CPC - B65D 83/771: {for dispensing fluent contents by means of a flexible bag or a deformable membrane or diaphragm} - B29C 49/071: {Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties} - B29C 49/22: using multilayered preforms or parisons - B65D 1/0215: {multilayered (B65D81/3837 takes precedence)} - B65D 83/7711: {the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag} - B29C 49/04: Extrusion blow-moulding - B29C 2949/077: characterised by the neck - B29C 2949/0773: Threads - B29C 2949/3006: having tangentially different components within one layer, e.g. longitudinal stripes - B29C 2949/3094: preform having at least partially loose components, e.g. at least partially loose layers - B29K 2023/06: {PE, i.e. polyethylene} - B29K 2023/083: {EVA, i.e. ethylene vinyl acetate copolymer} - B29K 2023/12: {PP, i.e. polypropylene} - B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material - B29K 2077/00: Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof}, as moulding material - B29K 2995/0077: Yield strength; Tensile strength - B29L 2009/001: {the layers being loose} - B29L 2031/703: {Bellows} - B29L 2031/7158: {Bottles} - Y10S 215/902: Vent - Y10S 220/913: Ventilated container - 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 - 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) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract The blow-molded container of this invention comprises an outer layer (2) of a synthetic resin, which forms the outer shell of a finite shape; an inner layer (3) of a flexible synthetic resin, which is peelably laminated with the outer layer (2) and forms an inner bag; and a pair of adhered zones (4) of a vertical strip type, which is formed axisymmetrically on the central axis of container (1) to adhere and fix the outer layer (2) and the inner layer (3) over the entire height and is located so as to avoid the positions of air introduction ports (9) that have been provided in the outer layer (2) to introduce air into the void between the outer layer (2) and the inner layer (3). In this configuration, a pair of adhered zones (4) is disposed at positions opposite to each other and is separated by a parting line (5). The lower ends of both adhered zones (4) are disposed at the partly or wholly end-to-end position facing each other on the bottom seal formed when the bottom portion is pressed flat with the pinch-off of a blow mold. Because of this end-to-end facing position of the lower ends, the bottom seal has a full mechanical strength. Thus, there is provided a container of the delaminated type capable of molding by means of an ordinary mold and having high manufacturing efficiency. ## Claims ### Claim 1 A blow-molded container comprising: an outer layer (2) of a synthetic resin, which forms the outer shell of a finite shape; an inner layer (3) of a flexible synthetic resin, which is peelably laminated with the outer layer (2) and forms an inner bag; and a pair of adhered zones (4) of a vertical strip type, which is formed axisymmetrically on the central axis of container (1) to adhere and fix the outer layer (2) and the inner layer (3) over the entire height and is located so as to avoid the positions of air introduction ports (9) that have been provided in the outer layer (2) to introduce air into the void between the outer layer (2) and the inner layer (3); wherein the pair of adhered zones (4) is provided at positions opposite to each other and is separated by a parting line (5); and wherein the lower ends of both adhered zones (4) are disposed at the partly or wholly end-to-end position facing each other on the bottom seal (10) formed when the bottom portion of the container is pressed flat with the pinch-off of a blow mold. ### Claim 2 (depends on 1) The blow-molded container according to claim 1, wherein the lower ends of both adhered zones (4) are dislocated from each other to such a degree that corresponding portions of the inner layer (11) are not flexibly deformed. ### Claim 3 (depends on 1) The blow-molded container according to claim 1, wherein the lower end of one adhered zone (4) is disposed at the wholly end-to-end position facing the counterpart of the other adhered zone (4). ### Claim 4 (depends on 1, 2) The blow-molded container according to claim 1, 2, or 3, wherein the adhered zones (4) are disposed axisymmetrically on the central axis of the container (1) at positions dislocated from the parting line (5) by a central angle of roughly 90 degrees. ### Claim 5 (depends on 1, 2, 3, 4) The blow-molded container according to claim 1, 2, 3 or 4 wherein a pair of air introduction ports (9) are provided, axisymmetrically on the central axis of the container (1), at two points in the outer layer (2) on or near the parting line (5). ### Claim 6 (depends on 1, 2, 3, 4) The blow-molded container according to claim 1, 2, 3, 4, or 5, wherein the air introduction ports (9) are provided in the neck portions of the outer layer (2).