Patents Assigned to Daiwa Can Company
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Publication number: 20240150062Abstract: A manufacturing method of a bottle-shaped can includes forming a cylindrical can trunk by drawing or ironing a metal sheet coated with a colored resin and printing a design on the outer surface of the can trunk. The manufacturing method further includes painting a predetermined section of the outer surface of the can trunk multiple times while changing colors of inks thereby collecting samples of colors resulting from mixing the colors of the inks with a ground color of the predetermined section, preparing a tone chart by groups of hues of the colors having the same brightness and colorfulness, determining a color scheme of the design with reference to the tone chart, and printing the design on the predetermined section in the determined color scheme.Type: ApplicationFiled: February 9, 2022Publication date: May 9, 2024Applicant: DAIWA CAN COMPANYInventors: Hiroyuki OHNO, Yukikazu HIRAIDE
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Patent number: 11964806Abstract: A cap comprising a cap body including a top plate portion which is disk-shaped, and a skirt portion which is cylindrical and provided at a peripheral edge portion of the top plate portion, the top plate portion including a substrate and a resin coating film provided on a cap inner surface side of the substrate, the resin coating film including a polyester-based resin and a lubricant, and a sealing member provided in the cap body separately from the cap body so as to face the top plate portion, and having an outer diameter smaller than an inner diameter of the skirt portion.Type: GrantFiled: April 25, 2022Date of Patent: April 23, 2024Assignee: DAIWA CAN COMPANYInventors: Eiji Fujishige, Kenji Takagi, Kenji Kawahara, Yukikazu Hiraide, Takashi Kawada
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Publication number: 20240066580Abstract: A method of manufacturing a rectangular battery includes: ironing the blank thereby forming an interim cup including an interim bottom whose area is larger than a bottom plate of the rectangular battery can, an inclined wall tilting upwardly formed continuously from each longitudinal end of the interim bottom, a short side wall formed continuously from the inclined wall, and a long side wall formed continuously from a curved corner formed on each lateral end of the interim bottom; deforming the interim cup such that each boundary between the interim bottom and the inclined wall is displaced toward a longitudinal end of the bottom plate of the rectangular battery can, and a width of the interim bottom is adjusted to a width of the bottom plate of the rectangular battery can; and ironing the short side and long side walls to reduce thicknesses of the short side and long side walls.Type: ApplicationFiled: January 7, 2022Publication date: February 29, 2024Applicant: DAIWA CAN COMPANYInventors: Minoru FUKUNAGA, Kazuhiro SAEKI, Yasushi ENOKI
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Patent number: 11905073Abstract: A cap comprises a cap body including a top plate portion and a skirt portion integrally provided with the top plate portion through a corner portion and screwed to a mouth portion of a can container, and a disk-shaped sealing member including a sliding layer which is provided separately from the cap body to face the top plate portion, includes a protrusion portion formed on an outer peripheral side of a portion opposed to the mouth portion when the cap body is screwed with the can container and gradually decreasing in thickness toward an outer peripheral edge, and slides on the top plate portion and a sealing layer which is integrally provided with the sliding layer and seals the mouth portion.Type: GrantFiled: March 19, 2020Date of Patent: February 20, 2024Assignee: Daiwa Can CompanyInventors: Eiji Araki, Takashi Kawada, Kenji Takagi
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Publication number: 20240042508Abstract: A method for manufacturing a two-piece can includes punching a metal plate into a disk shape, the metal plate including a Sn-plated layer of 100 mg/m2 or more and 1500 mg/m2 or less provided on a base material made of steel, a Cr-plated layer of 6 mg/m2 or more and 100 mg/m2 or less provided on the Sn-plated layer, and a coating layer laminated on the Cr-plated layer; and shaping by performing drawing and ironing on the metal plate having the disk shape into a can body having a bottomed cylindrical shape, wherein in the shaping, the drawing and ironing is performed so that ((Tb?Tw)/Tb)×100, which is a plate thickness reduction rate from the metal plate having the disk shape to the can body, is set as 35%?((Tb?Tw)/Tb)×100(%)?60%.Type: ApplicationFiled: September 13, 2019Publication date: February 8, 2024Applicants: DAIWA CAN COMPANY, NIPPON STEEL CORPORATIONInventors: Minoru Fukunaga, Koichiro Nakamura, Shigeru Hirano, Yoshiaki Tani
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Patent number: 11878832Abstract: A bottle-shaped can includes a cap having an excellent sealing ability but easy to be opened. A top section includes a leading end section as an upper end of a neck portion, a diametrically-largest section formed beneath the leading end section, a diametrically-shrunk section extending downwardly from the diametrically-largest section, and an outer circumferential wall section extending downwardly from the diametrically-shrunk section. The leading end section, the diametrically-largest section, and diametrically-shrunk section form a smooth curved surface. A curvature of the diametrically-largest section in a cross-section is zero or negative value, given that a curvature of the diametrically-shrunk section is positive value. A flexion section is formed between the diametrically-shrunk section and the outer circumferential wall section. The outer diameter of the outer circumferential wall section in which the curvature is zero or negative value is larger than an outer diameter of the flexion section.Type: GrantFiled: March 22, 2019Date of Patent: January 23, 2024Assignee: Daiwa Can CompanyInventors: Keiji Kuroiwa, Shigeru Noto, Tomohiko Oyanagi
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Publication number: 20240010388Abstract: An aluminum-canned wine comprising: an aluminum can including an aluminum sheet, a resin film provided on a surface of the aluminum sheet which faces an internal space of the aluminum can, and an adhesive layer interposed between the aluminum sheet and the resin film and bonding the aluminum sheet and the resin film together, wherein the resin film includes a first resin layer as a topmost layer and a second resin layer containing a dimer acid-copolymerized polyester resin, and wherein at least one of the resin layers constituting the resin film, and/or the adhesive layer contains calcium carbonate; and a wine enclosed in the aluminum can and containing 4.3 mg/L or less of molecular SO2 and 350 mg/L or less of chloride ions.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Applicant: DAIWA CAN COMPANYInventors: Akira NAGASHIMA, Koichiro NAKAMURA, Sin OU
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Publication number: 20240011963Abstract: A method for determining a reference value of a wine for feasibility of filling an aluminum can, the method comprising: acquiring a pH, an alcohol concentration, and a free sulfite concentration for multiple kinds of wines; calculating a molecular SO2 concentration of each of the multiple kinds of wines from acquired values of the pH, the alcohol concentration, and the free sulfite concentration; enclosing the multiple kinds of wines into aluminum cans of an identical type, respectively, thereby obtaining multiple kinds of canned wines; putting the multiple kinds of canned wines in storage and evaluating quality of the canned wines after the storage; and determining an upper limit value of the molecular SO2 concentration based on an evaluation result obtained from the evaluating.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Applicant: DAIWA CAN COMPANYInventors: Akira NAGASHIMA, Koichiro NAKAMURA, Sin OU
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Publication number: 20230406576Abstract: A cap includes: a cap body including a top plate and a skirt having a tubular shape disposed on a circumferential edge of the top plate, a sealing member disposed on an inner surface of the top plate and configured to seal a mouth of a container, a slit extending in a circumferential direction of the skirt, and a worked portion formed at least in a part of the slit in the circumferential direction on at least a side of the slit closer to the top plate.Type: ApplicationFiled: September 6, 2023Publication date: December 21, 2023Applicant: DAIWA CAN COMPANYInventors: Eiji ARAKI, Kenji TAKAGI, Eiji FUJISHIGE
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Publication number: 20230398562Abstract: A dispensing device includes an air inlet hole passing through a cylinder in its thickness direction to connect an internal space of the container to an external space; and an action valve fitted onto an outer circumferential surface of the cylinder to close the air inlet hole, and that is isolated from the outer circumferential surface of the cylinder to introduce external air to the container when an internal pressure of the container is lower than an external pressure. An upper end portion of the cylinder is diametrically larger than a lower end portion. The action valve includes a ring-shaped annular section; and a valve section that extends axially from the annular section to close the air inlet hole while maintaining a radial clearance from the air inlet hole, to shield the air inlet hole from the internal space of the container.Type: ApplicationFiled: October 26, 2021Publication date: December 14, 2023Applicant: DAIWA CAN COMPANYInventor: Hiroya MORITA
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Patent number: 11834228Abstract: A cap includes a cap body including a disk-shaped top plate portion and a cylindrical skirt portion provided at a peripheral edge portion of the top plate portion; and a disk-shaped sealing member including a sliding layer and a sealing layer, the sliding layer disposed on the top plate portion side and having a thin portion thinner than at least a center side provided on an outer peripheral edge side, and the sealing layer provided on a main surface opposite to the top plate portion side of the sliding layer and sealing a mouth portion of a can container.Type: GrantFiled: April 22, 2021Date of Patent: December 5, 2023Assignee: DAIWA CAN COMPANYInventors: Eiji Fujishige, Junji Matsumura, Eiji Araki, Kenji Takagi, Keisuke Hashimoto
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Publication number: 20230331439Abstract: To prevent a reduction in a bending strength and a buckling strength of a container bag for fluid in which a spout is mounted on an upper end of a trunk section formed of a sheet material. Cells 9 are formed between two films of the sheet material 2 by bonding the films together along bonding lines 8, and inflated with fluid. The cells 9 positioned within a width of the spout in a width direction of the trunk section 5 extends downwardly from a site at which the spout 6 is clamped by the layers of the sheet material 2. A lower end of the spout 6 is situated lower than upper ends of the cells 9.Type: ApplicationFiled: March 30, 2021Publication date: October 19, 2023Applicant: DAIWA CAN COMPANYInventors: Hidetomo KOHARA, Tsuyoshi KAWABATA, Susumu SATO, Yuka TOZAKI
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Patent number: 11780662Abstract: A can lid is provided for excellence in an explosion-proof function and a suitability for a hammering inspection. A buckling-inducing section that is easily deformed angularly is formed on a plurality of sites in a circumferential portion of a panel section. A score line intersects with a virtual line passing through a center of the panel section and a center of the buckling-inducing section. End portions of the score line are situated closer to the center of the panel section than a virtual boundary line extending perpendicular to the virtual line. A circular depression is formed at the center of the panel section. A slant wall section is formed between the buckling-inducing section and an inner side wall, and the slant wall section is joined to the inner side wall through a curved portion.Type: GrantFiled: April 18, 2019Date of Patent: October 10, 2023Assignee: Daiwa Can CompanyInventors: Masahiro Shiotani, Tomohiko Oyanagi
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Patent number: 11731825Abstract: A package includes: a film including a crystalline stretched oriented film; and a breaking portion provided in the film and including one or more non-oriented portions formed by heating a part of the crystalline stretched oriented film at a temperature equal to or higher than a melting point of the crystalline stretched oriented film and facing each other with an oriented portion of the crystalline stretched oriented film interposed therebetween.Type: GrantFiled: March 25, 2020Date of Patent: August 22, 2023Assignee: Daiwa Can CompanyInventors: Yuji Takeuchi, Hiroko Namekawa, Takashi Kimiduka, Takashi Kanehira
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Publication number: 20230258555Abstract: To accurately estimate deterioration of a product in which contents is held in a metal container. The deterioration estimate system comprises: a predictive model 3 trained mechanically by a training data 1 collected through storage tests of the product; an inputter 5 transmitting data to estimate deterioration; and a transmitter 4 that transmitting a degree of the deterioration of the product computed by the predictive model 3 based on the data transmitted from the inputter 5. The training data 1 includes: data relating to the metal container of the product; data relating to the contents contained in the metal container; data relating to an environment where the product has been stored; and data relating to the degree of the deterioration of the product.Type: ApplicationFiled: May 24, 2021Publication date: August 17, 2023Applicant: DAIWA CAN COMPANYInventors: Rie SATO, Akira NAGASHIMA, Kouichiro NAKAMURA, Takashi KUSAYANAGI, Sin OU
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Patent number: 11713197Abstract: To provide a plate material conveying system configured to load plate materials produced by a press work onto a tray at regular intervals, prior to a cleaning process. The plate material conveying system comprises: a feeding section 13 that feeds the plate materials produced by the press work at regular intervals; a storage section 14 that stores the plate materials conveyed sequentially from the feeding section 13; a loading section 15 that loads the plate materials stored in the storage section 14 on the tray opposing thereto at one time; and a discharging section 16 that conveys the tray from a site to be opposed to the storage section 14 to a predetermined site.Type: GrantFiled: March 4, 2020Date of Patent: August 1, 2023Assignees: DAIWA ENGINEERING CO., LTD., DAIWA CAN COMPANYInventors: Hideyuki Tani, Toshihisa Kasahara, Hidekazu Yoshioka, Hiroshi Nakamura
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Publication number: 20230166884Abstract: A can container includes a can lid including a disk-shaped panel portion in which a circular score line defining a region for forming a drinking opening is formed on an outer peripheral edge side, a groove portion connected to the outer peripheral edge of the panel portion and recessed from the panel portion; and a can body including a cylindrical body portion, a fixing portion fixed to the flange portion, and a tapered portion provided between the body portion and the fixing portion and having a diameter reduced from the body portion toward the fixing portion, wherein a ratio between a diameter of the score line and an inner diameter of the body portion is 0.6 to 0.8.Type: ApplicationFiled: January 27, 2023Publication date: June 1, 2023Applicant: DAIWA CAN COMPANYInventors: Masahiro Shiotani, Rio Miyashita
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Publication number: 20230155223Abstract: A battery case includes a mounting surface formed into a desired shape to place a sealing plate stably thereon. The battery case includes: an open box-shaped case body holding components of a battery; and a sealing plate that is integrated with the case body to close an opening of the case body. A stepped portion on which the sealing plate is placed is formed on an inner wall surface of the case body. The stepped portion includes: a mounting surface on which the sealing plate is placed; an opposed surface opposed to a periphery of the sealing plate placed on the mounting surface; and a depressed corner depressed outwardly from the opposed surface between the mounting surface and the opposed surface.Type: ApplicationFiled: February 2, 2021Publication date: May 18, 2023Applicant: DAIWA CAN COMPANYInventors: Rio MIYASHITA, Masahiro SHIOTANI, Yasushi ENOKI
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Publication number: 20230123829Abstract: A manufacturing method of a plate member, in which a strip material can be positioned with respect to a die all through stamping operations using a pilot hole formed in an initial phase of the stamping operations. The plate member is manufactured by a press machine in which a progressive stamping die having a plurality of stations is placed. The manufacturing method comprises: forming an oval pilot hole 14 in an uncoiled strip 13; and stamping the uncoiled strip 13 by a plurality of operations while bringing a pilot pin 17 into contact with an inner edge of the pilot hole 14 at the operation before the pilot hole 14 is displaced, and at the operation after the pilot hole 14 is displaced.Type: ApplicationFiled: January 29, 2021Publication date: April 20, 2023Applicant: DAIWA CAN COMPANYInventor: Masahiro SHIOTANI
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Publication number: 20230124823Abstract: A manufacturing method of a battery case having a rectangular transverse cross-section in which an intermediate product having an elliptical transverse cross-section is shaped into a final product having a rectangular transverse cross-section by drawing and ironing the intermediate product multiple times to reduce a curvature radius of each corner and thicknesses of side walls formed on both sides of the corner. A difference between an ironing rate of the side wall formed on one side of the corner and an ironing rate of the side wall formed on the other side of the corner is reduced less than a predetermined difference, after the curvature radius of the corner between the side walls has been reduced shorter than a predetermined radius during the process of shaping the intermediate product into the final product.Type: ApplicationFiled: February 2, 2021Publication date: April 20, 2023Applicant: DAIWA CAN COMPANYInventors: Minoru FUKUNAGA, Kazuhiro SAEKI