Patents by Inventor Takamichi GOTO

Takamichi GOTO 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).

  • Publication number: 20240218148
    Abstract: The invention provides a biaxially oriented polyester film that is formed of a polyester resin composition containing polyester resin employing recycled PET bottles and particles, and meets all of requirements (1) to (4): (1) crystallization temperature is 120-139° C., (2) amount of change in orientation angle with respect to the film transverse direction is 0-10° per 0.5 m, (3) heat shrinkage rate at 150° C. for 30 minutes is 0.5-2.0% in the machine direction and ?1.0-1.0% in the transverse direction, and (4) content rate of an isophthalic acid component with respect to 100 mol % of total dicarboxylic acid components in the polyester resin composition is 0.01-3.0 mol %. Maximum and minimum values of data for each measurement position are within the range in the requirement (3), and a maximum value of each amount of change between two adjacent sample collection positions is within the range in the requirement (2).
    Type: Application
    Filed: May 27, 2022
    Publication date: July 4, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Nobuyuki MANABE, Takamichi GOTO, Masayuki HARUTA
  • Publication number: 20240165935
    Abstract: A biaxially stretched polyamide film, comprising a layer A containing 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of polyamide 6 copolymer, a layer B containing 5 to 30% by mass of polyamide 6, 70 to 95% by mass of polyamide 6 copolymer and 0 to 0.10% by mass of organic lubricant, and a layer C containing 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average particle diameter of 0.1 to 10 ?m, wherein layer B, layer A, and layer C are formed in this order; a critical surface tension on the layer B is 27.0 mN/m or higher; and on the surface of the layer B, a dispersion component ?d of surface free energy is 27.0 mJ/m2 or higher and a hydrogen bond component ?h is 10.0 mJ/m2 or lower.
    Type: Application
    Filed: March 16, 2022
    Publication date: May 23, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Publication number: 20230365804
    Abstract: The invention provides a biaxially oriented polyester film roll which has excellent transparency and mechanical characteristics, as well as an excellent ability to be wound up into a roll and/or lubricity during film manufacturing operations, which is environmentally friendly, and which exhibits little variation in physical properties in the machine direction thereof even when in the form of a long film roll, i.e., a roll of long wound length, and a production method therefor. In particular, the invention provides a biaxially oriented polyester film roll, wound up at which there is a biaxially oriented polyester film comprising a polyester resin composition comprising particles and polyester resin recycled by the market and/or society and including PET bottles, the biaxially oriented polyester film roll satisfying predetermined ranges of haze, purge time for air, arithmetic mean height Sa, maximum projecting height Sp, and variation thereof.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 16, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Nobuyuki MANABE, Takamichi GOTO, Masayuki HARUTA
  • Publication number: 20230340261
    Abstract: It is provided that a biaxially stretched polyamide film that has excellent resistance to pinhole formation due to bending, has excellent resistance to pinhole formation due to repeated contact, has excellent piercing resistance, and further can suppress generation of foreign matter during film formation. A biaxially stretched polyimide film comprising a functional layer (layer B) laminated on at least one surface of a base layer (layer A), wherein the base layer (layer A) contains at least (a) 70 to 99% by mass of a polyamide 6 resin, and (b) 1 to 20% by mass of an aliphatic or aromatic-aliphatic polyester resin, and the functional layer (layer B) contains at least 70% by mass or more of a polyamide 6 resin.
    Type: Application
    Filed: March 24, 2021
    Publication date: October 26, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Kazushige UEDA, Takamichi GOTO, Takuro ENDO
  • Patent number: 11794457
    Abstract: A multilayered stretched polyamide film which is biaxially stretched, and comprises three layers composed of a polyamide resin composition and comprising layer B as an easily adhesive layer, layer A as a base layer, and layer C as an easily slippery layer in this order, wherein the film satisfies the following (1) to (4); (1) the layer A contains 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass; (2) the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of the polyamide 6 copolymer in which a ratio of the copolymerization component in the copolymer is 3 to 35% by mass; (3) the layer C contains 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average diameter of 0.1 to 10 ?m; (4) the film has tensile strength at break of 150 MPa or more both in MD direction and TD direction; and (5) the film has laminate strength of 3.3 N/15 mm or more.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: October 24, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Takamichi Goto, Takuro Endo
  • Publication number: 20220339921
    Abstract: It is provided that a biaxially stretched polyamide film that is excellent in oxygen gas barrier property, impact resistance, and bending fatigue resistance, which are film qualities necessary for a packaging film and that is carbon-neutral by using a raw material derived from biomass; and a laminated body using the biaxially stretched polyamide film.
    Type: Application
    Filed: August 26, 2020
    Publication date: October 27, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Patent number: 11433653
    Abstract: It is an object of the present invention to provide a packaging bag having excellent dimensional stability, processability, bag breakage resistance, and chemical resistance, and causing less transfer of an extract to contents. A packaging bag includes a laminated body in which a layer of biaxially stretched polybutylene terephthalate film, having a thickness of 8 to 25 ?m and a polyolefin film sealant layer having a thickness of 10 to 100 ?m are laminated. The biaxially stretched polybutylene terephthalate film satisfies (a) to (c) below: (a) the biaxially stretched polybutylene terephthalate film contains 60% by mass or more of a polybutylene terephthalate resin; (b) a thermal shrinkage of the biaxially stretched polybutylene terephthalate film at 150° C. for 30 minutes is ?2 to +4%; and (c) a total amount of 1,4-butanediol and THF volatilized during heating at a temperature of 135° C. for 60 minutes is 2000 ppb or less.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: September 6, 2022
    Assignee: TOYOBO CO., LTD.
    Inventor: Takamichi Goto
  • Publication number: 20220266580
    Abstract: A multilayered stretched polyamide film which is biaxially stretched, and comprises three layers composed of a polyamide resin composition and comprising layer B as an easily adhesive layer, layer A as a base layer, and layer C as an easily slippery layer in this order, wherein the film satisfies the following (1) to (4); (1) the layer A contains 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass; (2) the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of the polyamide 6 copolymer in which a ratio of the copolymerization component in the copolymer is 3 to 35% by mass; (3) the layer C contains 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average diameter of 0.1 to 10 ?m; (4) the film has tensile strength at break of 150 MPa or more both in MD direction and TD direction; and (5) the film has laminate strength of 3.3 N/15 mm or more.
    Type: Application
    Filed: August 26, 2020
    Publication date: August 25, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Publication number: 20220259431
    Abstract: Provided is a gas-barrier polyamide film that has excellent bending pinhole resistance and friction pinhole resistance at the same time, that has excellent gas barrier properties, and that is suitable for use for packaging materials. In addition, the environmental load is reduced by using a plant-derived resin as a raw material. A gas-harrier polyamide film comprising an inorganic thin film layer on at least one surface of a biaxially stretched polyamide film containing 99 to 70% by mass of a polyamide 6 resin and 1 to 30% by mass of a polyamide resin in which at least a part of raw material is derived from biomass.
    Type: Application
    Filed: July 29, 2020
    Publication date: August 18, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Takamichi GOTO, Atsushi YAMAZAKI
  • Publication number: 20220135752
    Abstract: The objective of the present invention is to provide a biaxially stretched polyamide film that is excellent in an impact resistance, a folding pinhole resistance and a friction pinhole resistance and that is produced from a raw material derived from a biomass. The present invention relates to a biaxially stretched polyamide film, comprising 99 to 70 mass % of a Polyamide 6 resin and 1 to 30 mass % of a polyamide resin, wherein at least a part of a raw material of the polyamide resin is derived from a biomass, and the biaxially stretched polyamide film meets the following (a) and (b): (a) the number of Gelbo pinhole defect is 10 or less after the biaxially stretched polyamide film is twisted and bent 1000 times at 1° C. using a Gelbo flex tester, (b) a distance leading to a pinhole formation by a friction resistance pinhole test is 2900 cm or more.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 5, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA, Takamichi GOTO, Shigetomo YAMAMOTO
  • Publication number: 20220064393
    Abstract: The invention provides a laminated film containing at least a base material layer, a covering layer, and an inorganic thin-film layer in this order, wherein (a) the base material layer comprises a resin composition that contains at least 70 mass % of polybutylene terephthalate resin; (b) the laminated film has a piercing strength of 0.6 N/?m or more as measured in accordance with JIS Z 1707 after having undergone a 95° C.-boiling treatment for 30 minutes; (c) the base material layer has a surface orientation degree of 0.144-0.160; and (d) when the value of oxygen transmission rate obtained by measuring the laminated film under a 23° C.×65% RH condition is defined as (A) and the value of oxygen transmission rate obtained by measuring same under a 40° C.×90% RH condition is defined as (B), the barrier value deterioration rate of the laminated film, as calculated as (B/A)×100, is 300% or less.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 3, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Atsushi YAMAZAKI, Takamichi GOTO, Yukihiro NUMATA
  • Patent number: 11260634
    Abstract: The objective of the present invention is to provide a packaging bag which is produced from a laminate, which is excellent in straight cut property and which hardly cause a parting, even if the laminate contains a biaxially stretched PBT film having a large distortedness of a molecular orientation axis. The laminate has a biaxially stretched film substrate consisting of a polyester resin composition and a sealant film consisting of a polyolefin resin composition, and has a straight cut property in a longitudinal direction of 5 mm or less. The polyester resin composition contains 60 wt % or more of a polybutylene telephthalate resin, and the polyolefin resin composition contains 40 wt % to 97 wt % of a propylene-ethylene block copolymer, 3 wt % to 10 wt % of an ethylene-propylene copolymer elastomer, and 0 wt % to 50 wt % of an ethylene-?olefin random copolymer.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: March 1, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Wakato Tomatsu, Takamichi Goto, Tadashi Nishi
  • Publication number: 20210283889
    Abstract: The objective of the present invention is to provide a packaging bag which is produced from a laminate, which is excellent in straight cut property and which hardly cause a parting, even if the laminate contains a biaxially stretched PBT film having a large distortedness of a molecular orientation axis. The laminate has a biaxially stretched film substrate consisting of a polyester resin composition and a sealant film consisting of a polyolefin resin composition, and has a straight cut property in a longitudinal direction of 5 mm or less. The polyester resin composition contains 60 wt % or more of a polybutylene telephthalate resin, and the polyolefin resin composition contains 40 wt % to 97 wt % of a propylene-ethylene block copolymer, 3 wt % to 10 wt % of an ethylene-propylene copolymer elastomer, and 0 wt % to 50 wt % of an ethylene-?olefin random copolymer.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 16, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Wakato TOMATSU, Takamichi GOTO, Tadashi NISHI
  • Publication number: 20210198477
    Abstract: To provide a biaxially-stretched polyester film that can be used as a base film for vapor deposition, has excellent barrier properties, dimensional stability, processability, bag breakage resistance, and chemical resistance, and has less transfer of an extract to contents after retorting. A biaxially-stretched polyester film having features (a), (b), (c), and (d) below and having a thickness of 10 to 30 ?m: (a) the biaxially-stretched polyester film is formed from a polyester resin composition containing a polybutylene terephthalate resin (A) in a range of 60% by mass or more; (b) a thermal shrinkage of the biaxially-stretched polyester film at 150° C. for 30 minutes is ?2 to +2%; (c) thickness accuracy of the biaxially-stretched polyester film is 1 to 20%; and (d) a total amount of 1,4-butanediol and tetrahydrofuran volatilized during heating at a temperature of 135° C. for 60 minutes is not more than 2000 ppb.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 1, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Atsushi YAMAZAKI
  • Publication number: 20200326027
    Abstract: It is provided that an exterior material for vacuum insulation material which can suppress the generation of pinholes due to piercing of needle-like short fiber powder even when needle-like fiber powder such as cut of inorganic fiber such as glass wool is filled, and which has little deterioration in strength even when used for a long time. A exterior body for vacuum insulation material. comprises at least a base layer and a sealant layer, wherein the base layer has the following features (a) to (c), and the base layer is a biaxially stretched polybutylene terephthalate film having a thickness of 10 to 30 ?m. (a) containing 60-90% by weight of polybutylene terephthalate resin (A) and 10-40% by weight of polyester resin (B) other than the polybutylene terephthalate resin (A). (b) an intrinsic viscosity of not less than 0.81 dl/g. (c) piercing strength of not less than 0.5 N/?m.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 15, 2020
    Applicant: TOYOBO CO., LTD.
    Inventor: Takamichi GOTO
  • Publication number: 20200230927
    Abstract: The invention provides a laminated film with excellent bag rupture resistance, bending resistance, and gas barrier properties before and after bag producing processing or even when a bag produced from the laminated film is used for packaging of hard contents or subjected to a harsh wet-heat treatment such as retort sterilization. The laminated film comprises an inorganic thin film layer and a protective layer in this order on a base film layer, wherein the base film layer contains a resin composition containing 60% by mass or more of a polybutylene terephthalate and has a thermal shrinkage at 150° C. of 4.0% or less both in a longitudinal direction and a width direction of the base film layer and a dimensional change rate at 200° C. with respect to an original length of the film of 2% or less in a temperature-dimensional change curve in a longitudinal direction of the base film layer.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 23, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Atsushi YAMAZAKI
  • Publication number: 20200172725
    Abstract: To provide a polyester film that has excellent pinhole resistance and bag breakage resistance, excellent adhesiveness after boiling or retorting, and little pitch deviation during printing or position deviation during laminating with a sealant, etc. A biaxially oriented polyester film simultaneously fulfilling (a)-(d). (a) Being a polyester resin composition containing 60%-90% by weight polybutylene teraphthalate resin (A) and 10%-40% by weight of a polyester resin (B) other than the polybutylene teraphthalate resin (A). (b) Having a transesterification ratio of 0.8-3.0 for the film. (c) Having a degree of orientation ?Nx in the film longitudinal direction of 0.049-0.076. (d) Having a thermal shrinkage at 150° C. of no more than 4.0% in both the longitudinal and width directions of the film.
    Type: Application
    Filed: May 28, 2018
    Publication date: June 4, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Noboru TAMARI, Takamichi GOTO
  • Publication number: 20200156359
    Abstract: It is an object of the present invention to provide a packaging bag having excellent dimensional stability, processability, bag breakage resistance, and chemical resistance, and causing less transfer of an extract to contents. A packaging bag includes a laminated body in which a layer of biaxially stretched polybutylene terephthalate film, having a thickness of 8 to 25 ?m and a polyolefin film sealant layer having a thickness of 10 to 100 ?m are laminated. The biaxially stretched polybutylene terephthalate film satisfies (a) to (c) below: (a) the biaxially stretched polybutylene terephthalate film contains 60% by mass or more of a polybutylene terephthalate resin; (b) a thermal shrinkage of the biaxially stretched polybutylene terephthalate film at 150° C. for 30 minutes is ?2 to +4%; and (c) a total amount of 1,4-butanediol and THF volatilized during heating at a temperature of 135° C. for 60 minutes is 2000 ppb or less.
    Type: Application
    Filed: July 3, 2018
    Publication date: May 21, 2020
    Applicant: TOYOBO CO., LTD.
    Inventor: Takamichi GOTO
  • Publication number: 20200079955
    Abstract: To obtain a polyester film that has excellent pinhole resistance and bag breakage resistance, excellent adhesiveness after boiling or retorting, and little pitch deviation during printing or position deviation during laminating with a sealant, etc. A biaxially oriented polyester film simultaneously fulfilling (a)-(d). (a) Being a polyester resin composition containing 60%-90% by weight polybutylene teraphthalate resin (A) and 10%-40% by weight of a polyester resin (B) other than the polybutylene teraphthalate resin (A). (b) Having a dimensional change rate at 80° C. of no more than 1.0% in the longitudinal direction of the film, relative to a film base length of a temperature dimensional change curve measured using a thermal mechanical analyzer. (c) Having a thermal shrinkage at 150° C. of no more than 4.0% in both the longitudinal and width directions of the film. (d) Having a film plane orientation ?P of 0.136-0.154.
    Type: Application
    Filed: May 28, 2018
    Publication date: March 12, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Noboru TAMARI, Takamichi GOTO
  • Publication number: 20200009777
    Abstract: The invention provides a biaxially oriented polyester film that is suitable for a food packaging material subjected to a boiling sterilization treatment or a retort sterilization treatment, has excellent impact resistance, bending resistance and uniform mechanical properties and, simultaneously, renders an oligomer component contained in the film less likely to be eluted. The biaxially oriented polyester film has the following characteristics: (a) the film comprises a resin composition containing 60 mass % or more of polybutylene terephthalate; (b) a thickness precision in a widthwise direction of the film is 1 to 20% or less; (c) an oligomer component contained in the film is 2000 to 12000 ppm; and (d) a mass of the oligomer component eluted into a 50% ethanol solution is 0.02 mg or less per square inch of the film when the film is immersed in the 50% ethanol solution and heated at 66° C. for 2 hours.
    Type: Application
    Filed: January 23, 2018
    Publication date: January 9, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Noboru TAMARI