Patents by Inventor Kiyoshi Iseki
Kiyoshi Iseki 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).
-
Patent number: 11959162Abstract: An object to be achieved by the present invention is to provide a gas barrier film having excellent acid resistance, transparency, and gas barrier properties. The gas barrier laminated body of the present invention is a laminate, in which an inorganic thin-film layer is laminated onto at least one of surfaces of a polymer substrate, and the inorganic thin-film layer mainly contains Al and Si, and a ratio of an Al content amount between before and after treatment of immersing the laminate into aqueous solution of hydrochloric acid that has concentration of 1 mol/L for one hour satisfies a formula of (Al Content Amount After Treatment)/(Al Content Amount Before Treatment)×100?75.Type: GrantFiled: July 26, 2018Date of Patent: April 16, 2024Assignee: TOYOBO CO., LTD.Inventors: Mitsuhiro Kashiwa, Yukihiro Numata, Kiyoshi Iseki
-
Publication number: 20240017529Abstract: An object of the present invention is to provide an inexpensive transparent barrier film which uses a plastic film prepared using a recycled resin of PET bottles in consideration of the environment and has excellent acid resistance. A transparent gas barrier film includes an aluminum oxide layer mainly composed of aluminum oxide on at least one surface of a substrate polyester film. The absorption coefficient immediately after vapor-deposition of the aluminum oxide layer is less than 0.03 nm?1. The vapor-deposition film thickness of the aluminum oxide layer is 6 nm or more and 10 nm or less. The substrate polyester film is a biaxially stretched polyester film containing 50% by weight or more of a polyester resin obtained by recycling PET bottles. A content of isophthalic acid, an intrinsic viscosity, a heat shrinkage rate, lamination strength, and thickness unevenness are within predetermined ranges.Type: ApplicationFiled: November 24, 2021Publication date: January 18, 2024Applicant: TOYOBO CO., LTD.Inventor: Kiyoshi ISEKI
-
Publication number: 20240002620Abstract: The invention provides a method and apparatus for producing a long transparent barrier film, which comprises a step for producing a transparent gas barrier film which has, on at least one surface of a plastic film, an aluminum oxide layer that is mainly composed of aluminum oxide or a silicon oxide layer that is mainly composed of silicon oxide, said aluminum or silicon oxide layer being produced by evaporating aluminum metal or silicon metal and injecting oxygen thereinto. In this step, the film thickness of the thus-formed aluminum oxide layer or silicon oxide layer is measured by a film thickness gauge using X ray fluorescence and the light transmittance of the thus-formed aluminum oxide layer or silicon oxide layer is measured by a light transmittance measuring device so as to control the film thickness and the light transmittance to be at predetermined values.Type: ApplicationFiled: November 24, 2021Publication date: January 4, 2024Applicant: TOYOBO CO., LTD.Inventor: Kiyoshi ISEKI
-
Publication number: 20220220602Abstract: An object of the present invention is to provide a transparent barrier film that has excellent acid resistance and is inexpensive, and a method for producing the same. A transparent gas barrier film includes a plastic film and an aluminum oxide layer provided on at least one surface of the plastic film, the aluminum oxide layer mainly composed of aluminum oxide. The absorption coefficient of the inorganic oxide layer immediately after vapor-deposition is less than 0.03 nm?1, and the film thickness of the inorganic oxide layer is 6 nm or more and 10 nm or less.Type: ApplicationFiled: May 26, 2020Publication date: July 14, 2022Applicant: TOYOBO CO., LTD.Inventors: Kiyoshi ISEKI, Daisuke IWATA
-
Publication number: 20200248298Abstract: To provide a production method that enables to produce a gas barrier film having excellent transparency and gas barrier properties at high speed. A method for producing a gas barrier film, the gas barrier film having an inorganic thin-film layer laminated to at least one of surfaces of a polymer substrate, in which the inorganic thin-film layer is formed by a vacuum vapor-deposition method using Al and SiO2 as vapor-deposition materials while introducing oxygen gas.Type: ApplicationFiled: July 26, 2018Publication date: August 6, 2020Applicant: TOYOBO CO., LTD.Inventors: Mitsuhiro KASHIWA, Yukihiro NUMATA, Kiyoshi ISEKI
-
Publication number: 20200224304Abstract: An object to be achieved by the present invention is to provide a gas barrier film having excellent acid resistance, transparency, and gas barrier properties. The gas barrier laminated body of the present invention is a laminate, in which an inorganic thin-film layer is laminated onto at least one of surfaces of a polymer substrate, and the inorganic thin-film layer mainly contains Al and Si, and a ratio of an Al content amount between before and after treatment of immersing the laminate into aqueous solution of hydrochloric acid that has concentration of 1 mol/L for one hour satisfies a formula of (Al Content Amount After Treatment)/(Al Content Amount Before Treatment)×100?75.Type: ApplicationFiled: July 26, 2018Publication date: July 16, 2020Applicant: TOYOBO CO., LTD.Inventors: Mitsuhiro KASHIWA, Yukihiro NUMATA, Kiyoshi ISEKI
-
Publication number: 20190169736Abstract: The present invention has been made in view of the above-mentioned conventional technical problems. That is, an object of the present invention is to provide a gas barrier film excellent in barrier properties to oxygen and water vapor, preferably excellent in water vapor barrier properties after being left to stand in a humidified environment for a prescribed period.Type: ApplicationFiled: February 7, 2019Publication date: June 6, 2019Applicant: TOYOBO CO., LTD.Inventors: Sachi MURAKAMI, Kyoko INAGAKI, Kiyoshi ISEKI
-
Patent number: 9850355Abstract: The present invention is a laminate film comprising a plastic film, and an inorganic layer and an organic layer containing a 1,3,5-triazine derivative laid on at least one surface of the plastic film, wherein the 1,3,5-triazine derivative has a sulfur-containing group as a substituent on at least one of 2, 4 and 6 positions.Type: GrantFiled: January 31, 2014Date of Patent: December 26, 2017Assignee: Toyobo Co., Ltd.Inventors: Takashi Ebata, Kiyoshi Iseki
-
Patent number: 9657388Abstract: Provided is a gas barrier film having superior gas barrier properties even when an organic gas barrier layer is provided to the surface of a plastic film. The gas barrier film is provided with an organic gas barrier layer containing a 1,3,5-triazine derivative at least at one surface of the plastic film, and is characterized by the 1,3,5-triazine derivative having as a substituent group a group containing sulfur at position 2, 4, or 6.Type: GrantFiled: February 5, 2014Date of Patent: May 23, 2017Assignee: Toyobo Co., Ltd.Inventors: Takashi Ebata, Kiyoshi Iseki
-
Publication number: 20150376766Abstract: The present invention has been made in view of the above-mentioned conventional technical problems. That is, an object of the present invention is to provide a gas barrier film excellent in barrier properties to oxygen and water vapor, preferably excellent in water vapor barrier properties after being left to stand in a humidified environment for a prescribed period.Type: ApplicationFiled: February 14, 2014Publication date: December 31, 2015Inventors: Sachi MURAKAMI, Kyoko INAGAKI, Kiyoshi ISEKI
-
Publication number: 20150376357Abstract: The present invention is a laminate film comprising a plastic film, and an inorganic layer and an organic layer containing a 1,3,5-triazine derivative laid on at least one surface of the plastic film, wherein the 1,3,5-triazine derivative has a sulfur-containing group as a substituent on at least one of 2, 4 and 6 positions.Type: ApplicationFiled: January 31, 2014Publication date: December 31, 2015Inventors: Takashi EBATA, Kiyoshi ISEKI
-
Publication number: 20150376769Abstract: Provided is a gas barrier film having superior gas barrier properties even when an organic gas barrier layer is provided to the surface of a plastic film. The gas barrier film is provided with an organic gas barrier layer containing a 1,3,5-triazine derivative at least at one surface of the plastic film, and is characterized by the 1,3,5-triazine derivative having as a substituent group a group containing sulfur at position 2, 4, or 6.Type: ApplicationFiled: February 5, 2014Publication date: December 31, 2015Inventors: Takashi EBATA, Kiyoshi ISEKI
-
Patent number: 7666490Abstract: A functional roll film comprises a plastic film which is transparent and having gas barrier properties, and provided at its at least one surface with an inorganic oxide layer, and which can be wound; wherein a maximum thickness of the inorganic oxide layer is 1.5 times of a minimum thickness.Type: GrantFiled: February 8, 2000Date of Patent: February 23, 2010Assignee: Toyo Boseki Kabushiki KaishaInventors: Kiyoshi Iseki, Seiichiro Yokoyama, Takahiro Kubota, Hiroshi Fujita, Tsukasa Ohshima, Shuji Hidaka, Yoshinori Takada, Yozo Yamada, Shinji Suzuki
-
Patent number: 6376093Abstract: A polyamide film satisfying (a) a haze value of not more than 5.0%, (b) a coefficient of kinetic friction (A) of not more than 1.0 under 50% humidity, the coefficient (A) being measured with regard to fiction between the same two polyamide films, and (c) a ratio of coefficients of kinetic friction (B)/(A) of not more than 1.5, the (B) being a coefficient of kinetic friction at 65% humidity, a billy oriented polyamide film showing an average dimensional change of not more than 3.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between before immersion in hot water at 95° C. and during the immersion, and an average dimensional change of not more than 4.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between the film without treatment and the film after withdrawal from said hot water; and a polyamide laminate film containing the film as a substrate layer.Type: GrantFiled: May 24, 1999Date of Patent: April 23, 2002Assignee: Toyo Boseki Kabushiki KaishaInventors: Shinji Fujita, Masaki Sugimoto, Shigeru Komeda, Masazumi Iwanishi, Masayoshi Satoh, Chikao Morishige, Kiyoshi Iseki, Seiichiro Yokoyama
-
Patent number: 5939205Abstract: A gas barrier film comprising a polyamide film and an inorganic deposited layer laminated thereon, wherein the maximum shrinkage percentage after boiling treatment at 95.degree. C. for 30 minutes is not more than 3.5%. The gas barrier film of the present invention has excellent gas barrier property and water vapor-proof property even after boiling or retort treatment. Hence, the film of the present invention can serve well as a wrapping material for a wide range of objects that require high gas barrier property, such as food, medical products, industrial materials and the like, and has great industrial value.Type: GrantFiled: April 15, 1997Date of Patent: August 17, 1999Assignee: Toyo Boseki Kabushiki KaishaInventors: Seiichiro Yokoyama, Shigeru Komeda, Kiyoshi Iseki, Yozo Yamada, Chikao Morishige, Hideyuki Mitamura, Satoshi Osame, Shinji Fujita
-
Patent number: 5856017Abstract: The present invention provides a gas barrier film including a plastic film and a thin film which is made of a composition containing an oxide as a main component and is formed on at least one surface of the plastic film. A specific gravity of the thin film is 55% or more and 100% or less of a specific gravity of the oxide in the form of a crystal generally present at room temperature and under atmospheric pressure. Thus, the invention provides a gas barrier film having an excellent gas barrier and retort properties and bending resistance; a gas barrier film suitably used in a wrapping material for dried food, liquid food or food containing liquids, frozen food and retort food; a gas barrier film that can be used in an electronic oven, can be sterilized by micro waves and can contain a free-oxygen absorber; a gas barrier film suitably used in a paper carton, a tube, a lid and the like; and a gas barrier film suitably used for cutting off gas for industrial use.Type: GrantFiled: July 18, 1997Date of Patent: January 5, 1999Assignee: Toyo Boseki Kabushiki KaishaInventors: Shusei Matsuda, Kiyoshi Iseki, Yoshiharu Morihara, Toru Kotani, Toshiyuki Oya, Toshio Uno, Teizo Harima, Hideomi Kobe, Yozo Yamada
-
Patent number: 5725958Abstract: The present invention provides a gas barrier film including a plastic film and a thin film which is made of a composition containing an oxide as a main component and is formed on at least one surface of the plastic film. A specific gravity of the thin film is 55% or more and 100% or less of a specific gravity of the oxide in the form of a crystal generally present at room temperature and under atmospheric pressure. Thus, the invention provides a gas barrier film having an excellent gas barrier and retort properties and bending resistance; a gas barrier film suitably used in a wrapping material for dried food, liquid food or food containing liquids, frozen food and retort food; a gas barrier film that can be used in an electronic oven, can be sterilized by micro waves end can contain a free-oxygen absorber; a gas barrier film suitably used in a paper carton, a tube, a lid and the like; and a gas barrier film suitably used for cutting off gas for industrial use.Type: GrantFiled: February 2, 1996Date of Patent: March 10, 1998Assignee: Toyo Boseki Kabushiki KaishaInventors: Shusei Matsuda, Kiyoshi Iseki, Yoshiharu Morihara, Toru Kotani, Toshiyuki Oya, Toshio Uno, Teizo Harima, Hideomi Kobe, Yozo Yamada