Patents Assigned to Toyobo Co., Ltd.
  • Publication number: 20240051274
    Abstract: A laminated film containing a coating layer having an inorganic lamellar compound and a polyvinyl-alcohol-based copolymer on at least one face of a substrate film, wherein (a) the substrate film is a stretched film employing propylenic resin, (b) the coating layer is attached thereto in an amount that is 0.10 g/m2 to 0.50 g/m2, (c) a total reflection infrared absorption spectrum of the laminated film is such that a ratio (P1/P2) of a peak intensity (P1) at which there is maximum absorption in a 1040 cm?1±10 cm?1 domain and a peak intensity (P2) at which there is maximum absorption in a 3300 cm?1±10 cm?1 domain is within the range of 3.0 to 25.0, and (d) thermal shrinkage of the laminated film when heated to 150° C.×5 minutes is not greater than 10% in each the MD direction and the TD direction.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 15, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Daisuke IWATA, Atsushi YAMAZAKI, Yuya YAMAGUCHI
  • Publication number: 20240051275
    Abstract: The invention provides a laminated film that includes a substrate layer (A) mainly composed of a polypropylene-based resin, a surface layer (B) on at least one surface of the substrate layer (A), and a coating layer laminated on the surface layer (B), wherein the laminated film satisfies the following requirements (I) to (III): (I) (a)/(b)?7.00 is satisfied, where (a) is Martens hardness of a coating layer-side surface measured with a test force of 0.1 mN, and (b) is Martens hardness of the coating layer-side surface measured with a test force of 7 mN; (II) a total of a maximum peak height (Rp) and maximum valley depth (Rv) of the coating layer-side surface measured with a scanning probe microscope is 30.0 nm or less; and (III) an oxygen permeation rate measured under conditions of 23° C.×65% RH is 100 cc/m2/day/atm or more and 1200 cc/m2/day/atm or less.
    Type: Application
    Filed: January 5, 2022
    Publication date: February 15, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Mitsuhiro KASHIWA, Atsushi YAMAZAKI, Mahiro NAKANO
  • Publication number: 20240052205
    Abstract: Provided is a polyester film that is excellent in stiffness and transparency, and that is suitable for producing molded articles, labels, optical films, and the like. A biaxially stretched polyester film comprises a polyester resin (I) comprising terephthalic acid and ethylene glycol as main constituent components, the polyester resin (I) having a recrystallization temperature obtained by DSC of 160° C. or more and 193° C. or less, the polyester resin (I) being contained in an amount of 60 mass % or more based on 100 mass % of the entire film, the film having a tensile modulus of elasticity of 3200 MPa or more both in a longitudinal direction and a width direction, and the total tensile modulus of elasticity in the longitudinal direction and the width direction being 7000 MPa or more.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 15, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Mei MATSUMURA, Akira SHIMIZU
  • Publication number: 20240054675
    Abstract: A fiber structure is estimated from an image of a product including a fiber. A method for analyzing an image of a product including a fiber includes: a step of acquiring a three-dimensional image of the product including the fiber; a step of converting the fiber in the three-dimensional image into a set of particles; and a step of estimating a structure of the fiber based on a positional relationship between particles included in the set of particles.
    Type: Application
    Filed: December 15, 2021
    Publication date: February 15, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Ryoichi Ishihara, Yoshihiro Uchida, Kenji Furuichi
  • Patent number: 11899167
    Abstract: Provided are a polyester film, a laminated film, and the like for protecting an organic EL module of a foldable display each of which is free of occurrence of a crack at a folding portion thereof, in order to provide a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The polyester film for protecting an organic EL module of a foldable display satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: February 13, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Shotaro Nishio, Kiwamu Kawai, Akira Shimizu
  • Publication number: 20240026045
    Abstract: The invention provides a sealant film that enables easy removal of even viscous contents from a packaging bag, has sufficient heat-sealability, and high easy-peelability, as well as a packaging bag comprising the film. The sealant film contains a sealing layer including a resin composition comprising (a) a polypropylene resin and (b) a silicon containing polyolefin resin, wherein (1) the ratio of a sealing strength at a sealing temperature of 200° C. and a sealing pressure of 0.4 MPa to the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.4 MPa is 2 or less, and (2) the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.6 MPa is 40 N/15 mm or less.
    Type: Application
    Filed: August 11, 2021
    Publication date: January 25, 2024
    Applicant: TOYOBO CO., LTD.
    Inventor: Hidetoshi FUJINO
  • Patent number: 11878494
    Abstract: The objective of the present invention is to provide a gas barrier polyamide film excellent in water resistance adhesiveness (water resistant laminate strength), impact resistance and pinhole resistance. The gas barrier polyamide film is characterized in comprising a stretched polyamide film, wherein the stretched polyamide film comprises A Layer: a base layer and B Layer: an easily adhesive layer on at least one surface of the A Layer, C Layer: an inorganic thin film layer is laminated on the surface of the B Layer in the stretched polyamide film, the A Layer comprises 65 mass % or more of Polyamide 6, the B Layer comprises 60 to 100 mass % of a Polyamide 6 copolymer and 0 to 40 mass % of Polyamide 6, and a ratio of a copolymer component in the Polyamide 6 copolymer is 3 to 35 mass %.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: January 23, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama
  • Patent number: 11878495
    Abstract: A cavity-containing polyester film is disclosed, including a layer (layer A) which has therein cavities, and layers (layers B) which each include a polyester resin containing inorganic particles and which are laminated, respectively, over both surfaces of the layer A. The layer A includes a composition including a polyester resin and a polypropylene resin. The polypropylene resin satisfies requirements of: (1) the melt flow rate (MFR) ranges from 1.0 to 10 g/10-minutes (at a temperature of 230° C. under a load of 2.16 kg); (2) the deflection temperature is 85° C. or higher under load (at a bending stress of 0.45 MPa); and (3) the weight-average molecular weight Mw ranges from 200,000 to 450,000 (measured by gel permeation chromatography (GPC)); and the molecular weight distribution ranges from 2 to 6 (being represented as the ratio of the weight-average molecular weight Mw to the number-average molecular weight Mn of the polypropylene resin (Mw/Mn)).
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: January 23, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Shoji Deguchi, Shunichiro Baba
  • Publication number: 20240017529
    Abstract: 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: Application
    Filed: November 24, 2021
    Publication date: January 18, 2024
    Applicant: TOYOBO CO., LTD.
    Inventor: Kiyoshi ISEKI
  • Patent number: 11866572
    Abstract: The invention provides a polyolefin-based resin film including a polyolefin-based resin composition that includes at least a propylene-? olefin random copolymer, wherein (1) an olefin-based block copolymer is 0 to 2 parts by weight based on 100 parts by weight of the propylene-? olefin random copolymer; (2) an olefin-based copolymeric elastomer resin is 0 to 2 parts by weight based on 100 parts by weight of the propylene-? olefin random copolymer; (3) a propylene homopolymer is 0 to 40 parts by weight based on 100 parts by weight of the propylene-? olefin random copolymer; (4) the polyolefin-based resin film exhibits a thermal shrinkage rate of 25% or less in a direction in which the thermal shrinkage rate is larger between a longitudinal direction and a lateral direction; and (5) a planar orientation coefficient ?P calculated from a refractive index of the polyolefin-based resin film is 0.0100-0.0145.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: January 9, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Wakato Tomatsu, Tadashi Nishi
  • Publication number: 20240002620
    Abstract: 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: Application
    Filed: November 24, 2021
    Publication date: January 4, 2024
    Applicant: TOYOBO CO., LTD.
    Inventor: Kiyoshi ISEKI
  • Publication number: 20240002700
    Abstract: The invention provides a thermal adhesive laminated oriented film containing a substrate layer comprising a resin composition containing 99.9 to 60% by mass of a polyamide resin or a polymethylpentene resin and 0.1 to 40% by mass of a modified polyolefin resin; and a thermal adhesive layer containing a thermal adhesive polyolefin resin and provided on each of both surfaces of the substrate layer so as to be in direct contact therewith by coextrusion. When a machine direction is defined as an X axis, a transverse direction is defined as a Y axis, and a thickness direction is defined as a Z axis, the film is stretched and oriented in at least one direction of the X axis or the Y axis, and has a thermal deformation rate at 150° C. of 4% or less in both directions of the X axis and the Y axis.
    Type: Application
    Filed: November 11, 2021
    Publication date: January 4, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Yoshitaka TANAKA, Shigeyuki WATANABE, Nobuhiro YOSHIMURA, Ryo UMEKI, Takafumi MASUDA, Daiki FUNAOKA
  • Publication number: 20240001658
    Abstract: A display body characterized in that there is at least one white printing layer permitting printing by means of laser irradiation; said white printing layer has a nonprinted region and a printed region at which laser printing has been carried out; and (1) through (3) are satisfied. (1) An absolute value of a difference in color L* values between the printed region and the nonprinted region is not less than 1.0 but not greater than 10.0. (2) Total luminous transmittance of the nonprinted region is not less than 8% but not greater than 50%. (3) Fractional decrease in thickness of the printed region in a cross-sectional direction is not less than 1 vol % but not greater than 80 vol % of that of the nonprinted region. A high-quality display body, with high productivity is provided.
    Type: Application
    Filed: October 6, 2021
    Publication date: January 4, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Shintaro ISHIMARU, Masayuki HARUTA
  • Publication number: 20240002614
    Abstract: The invention provides a heat-shrinkable polyester film characterized by (1) a hot-water heat shrinkage rate in a width direction of the film of 40%-80% by immersing the film in hot-water at 90° C. for 10 seconds; (2) a hot-water heat shrinkage rate in a longitudinal direction of the film of 5%-10% by immersing the film in hot-water at 90° C. for 10 seconds; (3) a maximum peak height Sp on at least one surface of the film of 0.8-3.0 ?m; (4) an arithmetical mean height Sa on at least one surface of the film of 0.03-0.2 ?m; and (5) a degassing time for removing air from between the two identical polyester films is 14 seconds or less, wherein the films are formed by stacking a front surface of the one film on a back surface of the other film.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 4, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Masayuki HARUTA, Norimi TABOTA
  • Publication number: 20230415465
    Abstract: The invention provides a multilayer body that includes a base film such as a biaxially oriented polyamide resin film having high strength and a polyolefin resin film, and that has high bag breakage resistance and bending pinhole resistance while having high heat-sealing strength. The multilayer body comprises a polyolefin resin film that includes a polypropylene resin composition that contains a propylene-?-olefin random copolymer; and a biaxially stretched nylon film, wherein a sealing layer, a core layer, and a laminate layer are included in order, respectively.
    Type: Application
    Filed: October 29, 2021
    Publication date: December 28, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Wakato TOMATSU, Tadashi NISHI, Sakie YAMAUCHI
  • Publication number: 20230413785
    Abstract: An object of the present invention is to provide a method for easily managing a health condition of a calf.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 28, 2023
    Applicant: TOYOBO CO., LTD.
    Inventor: Yoko KOMATSU
  • Publication number: 20230415464
    Abstract: The invention provides a polyolefin resin film having high bag breakage resistance and bending pinhole resistance while having high heat-sealing strength even when stacked with a base such as a biaxially oriented polyamide resin film having high strength. The polyolefin resin film comprises a polypropylene resin composition that contains a propylene-?-olefin random copolymer, wherein a sealing layer, a core layer, and a laminate layer are included in order, respectively.
    Type: Application
    Filed: October 29, 2021
    Publication date: December 28, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Wakato TOMATSU, Tadashi NISHI, Sakie YAMAUCHI
  • Patent number: 11852630
    Abstract: An immunochromatographic test piece is provided containing a control line detection reagent that is not affected by the concentration of an analyte to be detected. The immunochromatographic test piece is for quantifying an analyte in a biological sample, and includes (a) a conjugation pad impregnated with a detection reagent that specifically binds to the analyte, and a control line detection reagent; and (b) a porous membrane pad on which an antibody for capturing the analyte is immobilized upstream, and an antibody for capturing specifically the control line detection reagent is immobilized downstream.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: December 26, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Hiroshi Kawaminami, Yuji Tsuji, Keizo Yoneda
  • Patent number: 11851550
    Abstract: The present invention provides a film and/or a packaging bag from which contents that may be viscous are easily brought out, and exhibiting enough heat seal properties as well as superior anti-blocking effect and slipperiness. The sealant film has a seal layer consisting of a resin composition including the following (a) and (b), and the film satisfies the following (1) to (3). (a) Polyolefin-based resin; and (b) Silylated polyolefin resin, (1) An abundance ratio (Si/C) of silicon atoms Si to carbon atoms C included in the seal layer of 0.001 or more and 0.02 or less; (2) An abundance ratio (Si/C) of silicon atoms Si to carbon atoms C present at a surface of the seal layer of 0.05 or more and 0.2 or less; and (3) An arithmetic average roughness Ra of a surface of the seal layer of 0.07 ?m or more and 0.5 ?m or less.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: December 26, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Hidetoshi Fujino, Sakie Yamauchi
  • Publication number: 20230408734
    Abstract: An object is to provide a polyethylene terephthalate-based resin film that has excellent processing suitability and that particularly can effectively suppress the occurrence of cleavage in the film layer of a portion cut with a knife. Another object is to provide a polarizer, a transparent conductive film, a touch panel, and image display devices such as a liquid crystal display device and an organic EL display device, all of which use the polyethylene terephthalate-based resin film. A polyethylene terephthalate-based resin film satisfying the following (1) and (2): (1) the polyethylene terephthalate-based resin film has a retardation of 3000 to 30000 nm; and (2) the polyethylene terephthalate-based resin film has an amorphous orientation parameter of 0.330 or more as measured by an ATR-FTIR method.
    Type: Application
    Filed: October 18, 2021
    Publication date: December 21, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Takahisa ABE, Yuka IKEDA, Kaoru SAWADA