Patents by Inventor Takayoshi Okuzu
Takayoshi Okuzu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11326032Abstract: Provided is a polyamide film which is a stretched film including a polyamide resin composition containing 1 to 10% by mass of a polyester thermoplastic elastomer, wherein the polyamide film satisfies all of the following conditions (A) to (C): (A) elastic moduli in MD and TD of the film are each 1.0 to 2.3 GPa; (B) a ratio between the elastic moduli in MD and TD of the film (MD/TD) is 0.9 to 1.5; and (C) a haze of the film is 7% or less.Type: GrantFiled: December 26, 2018Date of Patent: May 10, 2022Assignee: Unitika Ltd.Inventors: Takayoshi Okuzu, Akiko Hamamoto, Ken Akamatsu
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Publication number: 20210179843Abstract: A polyester film comprises a polyester (A) composed mainly of polybutylene terephthalate and a polyester (B) composed mainly of polyethylene terephthalate, wherein a mass ratio (A/B) between the polyesters (A) and (B) is 70/30 to 55/45, a dry heat shrinkage rate (A) through heat treatment at 160° C. for 30 minutes is 20% or less in any of four directions on a film surface (0°, 45°, 90° and 135®), a difference between a maximum value and a minimum value of these dry heat shrinkage rates is 5% or less, a dry heat shrinkage rate (B) through heat treatment at 200° C. for 15 minutes is 35% or less in any of the four directions, a difference between a maximum value and a minimum value of these dry heat shrinkage rates is 5% or less, and a thickness variation in the four directions is 10% or less.Type: ApplicationFiled: September 5, 2019Publication date: June 17, 2021Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Ken Akamatsu, Akiko Hamamoto, Hiroshi Ashihara, Goro Araki, Akito Kajita
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Publication number: 20200392298Abstract: Provided is a polyamide film which is a stretched film including a polyamide resin composition containing 1 to 10% by mass of a polyester thermoplastic elastomer, wherein the polyamide film satisfies all of the following conditions (A) to (C): (A) elastic moduli in MD and TD of the film are each 1.0 to 2.3 GPa; (B) a ratio between the elastic moduli in MD and TD of the film (MD/TD) is 0.9 to 1.5; and (C) a haze of the film is 7% or less.Type: ApplicationFiled: December 26, 2018Publication date: December 17, 2020Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Akiko Hamamoto, Ken Akamatsu
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Patent number: 9518195Abstract: A biaxially stretched polyester film, being a biaxially stretched film including a modified polybutylene terephthalate (modified PBT) and polyethylene terephthalate (PET), wherein a mass ratio (modified PBT/PET) between the modified PBT and PET is 20/80 to 5/95, the modified PBT is a PBT containing 5 to 20% by mass of a polytetramethylene glycol unit having a molecular weight of 600 to 4,000, the amount of tetrahydrofuran (THF) generated by heat treating the biaxially stretched film in a helium gas atmosphere at 180° C. for 30 minutes is 50 ?g/g or less, and the biaxially stretched film has tear linearity in a lengthwise direction thereof.Type: GrantFiled: September 3, 2012Date of Patent: December 13, 2016Assignee: UNITIKA LTD.Inventors: Takayoshi Okuzu, Tomoharu Suzuki
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Patent number: 9115256Abstract: Disclosed is a polyamide film coated with a vinylidene chloride copolymer mixture, wherein: on at least one side of a biaxially stretched polyamide film, a vinylidene chloride copolymer mixture layer in which no thermal crosslinking agent is copolymerized is formed by coating without through an intermediary of a primer layer; the vinylidene chloride copolymer mixture is a mixture including two or more vinylidene chloride copolymers; and one of the vinylidene chloride copolymers has a crystal melting point of 170° C. or higher and 210° C. or lower and is contained in an amount of 25 to 45 parts by mass in relation to 100 parts by mass of the vinylidene chloride copolymer mixture.Type: GrantFiled: November 28, 2008Date of Patent: August 25, 2015Assignee: UNITIKA LTD.Inventors: Hideki Kuwata, Takayoshi Okuzu
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Patent number: 9109094Abstract: Disclosed is a highly adhesive polyester film having a highly adhesive primer layer disposed on at least one side of a substrate polyester film. The substrate polyester film is a stretched film having linear tearability and formed of a mixed polyester resin containing polyethylene terephthalate and a modified polybutylene terephthalate, and the highly adhesive primer layer contains a polyester resin (A) having an acid number of 20 to 60 mg KOH/g and a hydroxyl number of 30 to 150 mg KOH/g, and having an oligomer content of 2.0% by mass or less, and substantially contains no crosslinking agent component.Type: GrantFiled: June 25, 2009Date of Patent: August 18, 2015Assignee: Unitika, Ltd.Inventors: Atsuko Noda, Takayoshi Okuzu, Hideki Kuwata, Kiwamu Yuki
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Publication number: 20150069651Abstract: Disclosed is a production method for an easy adhesion polyamide film including a substrate polyamide film and a primer layer containing an anionic water-dispersible polyurethane resin, formed on at least one side of the substrate polyamide film. The thickness of the primer layer is 0.025 ?m or more and 0.250 ?m or less. The anionic water-dispersible polyurethane resin has a coating film elongation percentage of 250% or more and a tensile strength of 20 MPa ox more. When the easy adhesion polyamide film is subjected to a heat treatment in a helium gas atmosphere at 200° C. for 10 minutes, a total amount of the volatile base components evolved from the easy adhesion polyamide film is 0.50 ?g/g or less.Type: ApplicationFiled: October 8, 2014Publication date: March 12, 2015Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Hideki Kuwata
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Publication number: 20140193648Abstract: A biaxially stretched polyester film, being a biaxially stretched film including a modified polybutylene terephthalate (modified PBT) and polyethylene terephthalate (PET), wherein a mass ratio (modified PBT/PET) between the modified PBT and PET is 20/80 to 5/95, the modified PBT is a PBT containing 5 to 20% by mass of a polytetramethylene glycol unit having a molecular weight of 600 to 4,000, the amount of tetrahydrofuran (THF) generated by heat treating the biaxially stretched film in a helium gas atmosphere at 180° C. for 30 minutes is 50 ?g/g or less, and the biaxially stretched film has tear linearity in a lengthwise direction thereof.Type: ApplicationFiled: September 3, 2012Publication date: July 10, 2014Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Tomoharu Suzuki
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Patent number: 8309217Abstract: Disclosed is an easy adhesion film which attains sufficient adhesiveness in various processings without using any crosslinking agent such as a melamine resin to possibly pollute the environment and has a primer layer excellent in high-temperature hot water resistance. In the easy adhesion film, a coating film including a polyester resin and a crosslinking agent component in a content of 0.1% by mass or less, inclusive of 0% by mass, is formed on at least one side of a substrate film. The sum of the acid number and the hydroxyl number of the polyester resin is 50 to 200 mg KOH/g, wherein the acid number is 20 to 60 mg KOH/g and the hydroxyl number is 30 to 150 mg KOH/g. The amount of the oligomers contained in the polyester is 2.0% by mass or less. The thickness of the coating film is 0.001 to 0.5 ?m.Type: GrantFiled: February 12, 2008Date of Patent: November 13, 2012Assignee: Unitika Ltd.Inventors: Takayoshi Okuzu, Hideki Kuwata
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Patent number: 8247068Abstract: Disclosed is a coating material for forming a gas barrier. The coating material includes a polyalcohol polymer, a polycarboxylic acid polymer, and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component, or alternatively a monovalent metal compound whose surface is coated with a poorly water-soluble component and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component. By applying this coating material to a plastic substrate layer, a gas-barrier multilayer body having a gas-barrier layer formed thereon is obtained.Type: GrantFiled: August 30, 2007Date of Patent: August 21, 2012Assignees: Unitika Ltd., Toyo Ink Manufacturing Co., Ltd.Inventors: Takayoshi Okuzu, Hideki Kuwata, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
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Patent number: 8114521Abstract: A gas barrier laminate comprising: a plastic substrate (I); a gas barrier layer (II) formed from a gas barrier layer-forming coating material (C) containing a polyalcohol-based polymer (A) and a polycarboxylic acid-based polymer (B); an overcoat layer (III) formed from an overcoat layer-forming coating material (F) containing at least one of a monovalent metal compound (D) and a bivalent or higher metal compound (E); and a top coat layer (IV) formed from a top coat layer-forming coating material (G); wherein the gas barrier layer (II) is laminated to the plastic substrate (I), either directly or with an anchor coat layer disposed therebetween, the overcoat layer (III) is laminated on top of the gas barrier layer (II), and the top coat layer (IV) is formed on top of the overcoat layer (III).Type: GrantFiled: September 25, 2006Date of Patent: February 14, 2012Assignees: Unitika Ltd., Toyo Ink Mfg. Co., Ltd.Inventors: Hideki Kuwata, Takayoshi Okuzu, Munehiro Miyake, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
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Publication number: 20120003440Abstract: Disclosed is an easy adhesion polyamide film including a substrate polyamide film and a primer layer containing an anionic water-dispersible polyurethane resin, formed on at least one side of the substrate polyamide film. The thickness of the primer layer is 0.025 ?m or more and 0.250 ?m or less. The anionic water-dispersible polyurethane resin has a coating film elongation percentage of 250% or more and a tensile strength of 20 MPa or more. When the easy adhesion polyamide film is subjected to a heat treatment in a helium gas atmosphere at 200° C. for 10 minutes, a total amount of the volatile base components evolved from the easy adhesion polyamide film is 0.50 ?g/g or less.Type: ApplicationFiled: March 24, 2010Publication date: January 5, 2012Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Hideki Kuwata
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Publication number: 20110081512Abstract: Disclosed is a highly adhesive polyester film having a highly adhesive primer layer disposed on at least one side of a substrate polyester film. The substrate polyester film is a stretched film having linear tearability and formed of a mixed polyester resin containing polyethylene terephthalate and a modified polybutylene terephthalate, and the highly adhesive primer layer contains a polyester resin (A) having an acid number of 20 to 60 mg KOH/g and a hydroxyl number of 30 to 150 mg KOH/g, and having an oligomer content of 2.0% by mass or less, and substantially contains no crosslinking agent component.Type: ApplicationFiled: June 25, 2009Publication date: April 7, 2011Applicant: UNITIKA LTD.Inventors: Atsuko Noda, Takayoshi Okuzu, Hideki Kuwata, Kiwamu Yuki
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Publication number: 20100279110Abstract: Disclosed is a polyamide film coated with a vinylidene chloride copolymer mixture, wherein: on at least one side of a biaxially stretched polyamide film, a vinylidene chloride copolymer mixture layer in which no thermal crosslinking agent is copolymerized is formed by coating without through an intermediary of a primer layer; the vinylidene chloride copolymer mixture is a mixture including two or more vinylidene chloride copolymers; and one of the vinylidene chloride copolymers has a crystal melting point of 170° C. or higher and 210° C. or lower and is contained in an amount of 25 to 45 parts by mass in relation to 100 parts by mass of the vinylidene chloride copolymer mixture.Type: ApplicationFiled: November 28, 2008Publication date: November 4, 2010Applicant: UNITIKA LTD.Inventors: Hideki Kuwata, Takayoshi Okuzu
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Publication number: 20100239852Abstract: Disclosed is a coating material for forming a gas barrier. The coating material includes a polyalcohol polymer, a polycarboxylic acid polymer, and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component, or alternatively a monovalent metal compound whose surface is coated with a poorly water-soluble component and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component. By applying this coating material to a plastic substrate layer, a gas-barrier multilayer body having a gas-barrier layer formed thereon is obtained.Type: ApplicationFiled: August 30, 2007Publication date: September 23, 2010Inventors: Takayoshi Okuzu, Hideki Kuwata, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
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Publication number: 20100151265Abstract: A gas barrier laminate comprising: a plastic substrate (I); a gas barrier layer (II) formed from a gas barrier layer-forming coating material (C) containing a polyalcohol-based polymer (A) and a polycarboxylic acid-based polymer (B); and a resin layer (III) formed from a resin coating material (F) containing either a monovalent metal compound (D), or a monovalent metal compound (D) and a bivalent or higher metal compound (E); wherein the gas barrier layer (II) is laminated to the plastic substrate (I), either directly or with an anchor coat layer disposed therebetween, and the resin layer (III) is laminated on top of the gas barrier layer (II).Type: ApplicationFiled: September 25, 2006Publication date: June 17, 2010Applicants: Unitika Ltd., Toyo Ink Mfg. Co., Ltd.Inventors: Takayoshi Okuzu, Hideki Kuwata, Munehiro Miyake, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
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Publication number: 20100136328Abstract: Disclosed is an easy adhesion film which attains sufficient adhesiveness in various processings without using any crosslinking agent such as a melamine resin to possibly pollute the environment and has a primer layer excellent in high-temperature hot water resistance. In the easy adhesion film, a coating film including a polyester resin and a crosslinking agent component in a content of 0.1% by mass or less, inclusive of 0% by mass, is formed on at least one side of a substrate film. The sum of the acid number and the hydroxyl number of the polyester resin is 50 to 200 mg KOH/g, wherein the acid number is 20 to 60 mg KOH/g and the hydroxyl number is 30 to 150 mg KOH/g. The amount of the oligomers contained in the polyester is 2.0% by mass or less. The thickness of the coating film is 0.001 to 0.5 ?m.Type: ApplicationFiled: February 12, 2008Publication date: June 3, 2010Inventors: Takayoshi Okuzu, Hideki Kuwata
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Publication number: 20090280333Abstract: A gas barrier laminate comprising: a plastic substrate (I); a gas barrier layer (II) formed from a gas barrier layer-forming coating material (C) containing a polyalcohol-based polymer (A) and a polycarboxylic acid-based polymer (B); an overcoat layer (III) formed from an overcoat layer-forming coating material (F) containing at least one of a monovalent metal compound (D) and a bivalent or higher metal compound (E); and a top coat layer (IV) formed from a top coat layer-forming coating material (G); wherein the gas barrier layer (II) is laminated to the plastic substrate (I), either directly or with an anchor coat layer disposed therebetween, the overcoat layer (III) is laminated on top of the gas barrier layer (II), and the top coat layer (IV) is formed on top of the overcoat layer (III).Type: ApplicationFiled: September 25, 2006Publication date: November 12, 2009Applicants: UNITIKA LTD., TOYO INK MFG. CO., LTD.Inventors: Hideki Kuwata, Takayoshi Okuzu, Munehiro Miyake, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
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Publication number: 20090053542Abstract: A gas barrier laminate comprising: a plastic substrate (I); a gas barrier layer (II) formed from a gas barrier layer-forming coating material (C) containing a polyalcohol-based polymer (A) and a polycarboxylic acid-based polymer (B); and an overcoat layer (III) formed from an overcoat layer-forming coating material (F) containing at least one of a monovalent metal compound (D) and a bivalent or higher metal compound (E); wherein the gas barrier layer (II) is laminated to the plastic substrate (I), either directly or with an anchor coat layer disposed therebetween, the overcoat layer (III) is laminated on top of the gas barrier layer (II), and when a laminated product is prepared by laminating a laminate adhesive layer (IV) and a heat seal layer (V), in that order, to either the overcoat layer (III) or the plastic substrate (I) of the gas barrier laminate, either directly or with a printing ink layer disposed therebetween, the lamination strength (X) of the laminated product is not less than 1 N/cm, and theType: ApplicationFiled: September 25, 2006Publication date: February 26, 2009Applicants: unitika ltd., Toyo ink Mfg. Co., Ltd.Inventors: Hideki Kuwata, Takayoshi Okuzu, Munehiro Miyake, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno