Patents Assigned to MGC Filsheet Co., Ltd.
  • Patent number: 10416360
    Abstract: One embodiment of the present invention provides a light diffusion film, including: 100 parts by mass of a polycarbonate resin (A); 1 to 10 parts by mass of organic fine particles (B); and 0.01 to 0.5 parts by mass of inorganic fine particles (C), wherein the inorganic fine particles (C) have an average particle size of less than 1 ?m and a refractive index at a wavelength of 589 nm of 2.00 or more.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: September 17, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventor: Shohei Takahagi
  • Publication number: 20190255874
    Abstract: The present invention addresses the problem of providing a laminate that, in addition to having excellent security properties as a result of adding an information-presenting substance in a stable state, is provided with a resinous transparent layer that can cover a non-transparent layer to reliably protect it. The abovementioned problem is solved by a thermoplastic resin film laminate that comprises at least one transparent layer containing a thermoplastic resin and a non-transparent layer laminated with the transparent layer, in which the transparent layer contains an information-presenting substance that emits fluorescence when irradiated with irradiation light in a specific wavelength range, and in which the transparent layer is layered so as to cover at least part of the surface of the non-transparent layer.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 22, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Masahide TAKEDA, Kentaro SUZUKI, Keiichi ZOUTA, Junya ASANO
  • Publication number: 20190256706
    Abstract: The present invention addresses the problem of achieving a resin composition that has high durability and heat resistance and that maintains transparency while having excellent ease of workability, a resin sheet for a card formed using the resin composition, and a multilayer sheet. The abovementioned problem is solved by a resin composition containing a polycarbonate resin and 2 mass % or more but less than 9 mass % of an aliphatic polyester compound.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 22, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Masahide TAKEDA, Kentaro SUZUKI, Keiichi ZOUTA, Junya ASANO
  • Publication number: 20190194410
    Abstract: Provided is a two-stage curable laminate characterized in that a layer containing a high-hardness resin (B) is disposed on at least one surface of a resin layer (A) containing a polycarbonate resin (a1), a coating layer (Z) is disposed on the layer containing the high-hardness resin (B), and conditions (i) to (iii) above are satisfied.
    Type: Application
    Filed: August 17, 2017
    Publication date: June 27, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Atsuhiro TOKITA, Shigeki TAHARA, Masato TAKASAKI, Kishin OZAWA
  • Publication number: 20190155059
    Abstract: Provided is a polarizing lens which is excellent in terms of impact resistance, outer appearance and prevention of eye strain and which exhibits little variation in color tone and transmittance during formation. The polarizing lens is formed by stretching a polyvinyl alcohol film and dyeing it with a dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarizing sheet, bent to have a spherical or aspherical surface, into a mold, and injecting aromatic polycarbonate thereto, wherein the area in which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl alcohol film.
    Type: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Terutaka TOKUMARU, Hideaki KIMURA, Masayuki AKAKI, Kyousuke NAKAMURA
  • Patent number: 10263225
    Abstract: A thin sheet or film excellent in flame retardancy and light-blocking properties is provided. A battery pack case and others with high flame retardancy are each molded from this thin film. A thin sheet or film Including a specific phosphorus-containing flame retardant in a polycarbonate resin is excellent in thickness accuracy, flame retardancy and appearance. A thin sheet or film excellent in flame retardancy and also having a thickness of 0.01 to 0.25 mm was formed when controlling its thickness uniformly during sheet or film molding. Further, upon addition of carbon black, the resulting sheet or film was found to have good light-blocking properties and higher flame retardancy. Moreover, when used as a film packaging material for battery packs, the sheet or film of the present invention was found to be excellent in film strength and ultrasonic weldability.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: April 16, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Keiichi Zouta, Kimitaka Nakao, Yuko Takagi, Hiroki Ishii
  • Patent number: 10239297
    Abstract: The present invention aims to provide a multi-layer sheet and a multi-layer film, each ensuring not only high transparency but also scratch resistance and being easy to print and thermoform. The above aim was achieved by a multi-layer sheet and a multi-layer film, each being a laminate which comprises a polycarbonate-based resin layer as a substrate and has a thermoplastic acrylic resin layer containing silicon dioxide particles as an outermost layer on one or both surfaces of the substrate, wherein the silicon dioxide particles have an average particle size of 0.1 to 2 ?m, and wherein the content of the silicon dioxide particles is 0.1% to 1% by weight, relative to the total weight of the thermoplastic acrylic resin layer.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 26, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Tatsuya Kanagawa, Toshinari Aoki, Youji Uehata, Tomohiro Ube
  • Publication number: 20190084278
    Abstract: According to the present invention, a synthetic resin laminate comprising two transparent synthetic resin layers (A), two or more functional layers (B) having photochromic properties interposed between the two synthetic resin layers (A), and a transparent resin layer (C) interposed between the two or more functional layers (B), wherein the functional layer (B) is a cured layer comprising a photochromic dye and obtained from a diisocyanate and a polyol can be provided.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 21, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Katsuyuki MURAI, Kyousuke NAKAMURA, Hideaki KIMURA
  • Patent number: 10213951
    Abstract: A shaping roll for melt extrusion molding used for melt extrusion molding of thermoplastic resin, the shaping roll for melt extrusion molding comprises a metal roll body, a first cylinder, and a second cylinder. The metal roll body has a heat medium passage internally. The first cylinder covers a surface of a middle portion of the roll body part. The second cylinder covers surfaces of both end portions of the roll body part. The first cylinder comprises a first metal material having a thermal conductivity of 40 W/m·K or more. The second cylinder comprises a second metal material having a thermal conductivity of 20 W/m·K or less. The first cylinder and the second cylinder are at least partially joined to each other.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: February 26, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Osamu Kakinoki, Masahide Takeda, Masataka Sugiyama
  • Publication number: 20190054674
    Abstract: A front panel for on-board liquid crystal displays has a high hardness resin composition (B) on at least one side of a layer containing a resin (A) having a polycarbonate resin (a1). The front panel satisfies the following conditions (i) to (iv): (i) the thickness of the layer containing a high hardness resin composition (B) is 10 to 250 ?m, and the total thickness of the layer containing a resin (A) comprising a polycarbonate resin (a1) and the layer containing a high hardness resin composition (B) is 100 to 3,000 ?m; (ii) the high hardness resin composition (B) consists of any one of specific resin compositions (B1) to (B3); (iii) the retardation of the front panel is 3,000 nm or more; and (iv) the standard deviation of the second derivative of the irregular shape of the hard coat layer having irregularities is 0.1 or more.
    Type: Application
    Filed: March 2, 2017
    Publication date: February 21, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Hirokazu TAKENAKA, Yasuo OOSE, Takuya GOTO
  • Publication number: 20190010279
    Abstract: The present invention provides a polycarbonate resin having a terminal structure derived from a monovalent phenol represented by general formula (1), and a constitutional unit derived from a divalent phenol, wherein the specific alcohol content is 500 ppm or less.
    Type: Application
    Filed: September 13, 2016
    Publication date: January 10, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Genki SUGIYAMA, Hidetaka SHIMIZU, Yasuyoshi NAKAYASU, Ken OGASAWARA, Hiroshi NAKASEKO, Yuusuke NII
  • Patent number: 10144166
    Abstract: This sheet manufacturing apparatus is provided with: a nozzle for extruding a heated resin sheet; a main roll with a surface on which microstructures are formed; a follower roll disposed at a distance from the main roll; and an electricity-supplying mechanism. The electricity-supplying mechanism heats an electrically conductive section of the main roll by supplying electricity to the electrically conductive section from both edges of the main roll.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: December 4, 2018
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventor: Reiki Akita
  • Patent number: 10120206
    Abstract: [Problem] The present invention provides eyewear, such as polarized sunglasses, having cholesteric liquid crystal layers, wherein the eyewear has a metallic tone and antiglare properties, minimizes the reduction in light-polarizing element absorptive capability that is associated with circular polarization, and is moreover unaffected by external degrading factors such as sebum, moisture, and salt air. [Solution] This optical film is characterized by being provided with a light-reflecting layer R comprising a cholesteric liquid crystal layer that has right-handed helical orientation, a light-reflecting layer L comprising a cholesteric liquid crystal layer that has left-handed helical orientation, and a polarizing element layer.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 6, 2018
    Assignees: NIPPON KAYAKU KABUSHIKI KAISHA, MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Kouichi Tanaka, Yoshiyuki Yahagi, Hideyoshi Fujisawa, Takuya Gotou, Katsuyuki Murai, Kazuhisa Mitsuhata, Kyousuke Nakamura
  • Patent number: 10118988
    Abstract: A synthetic resin laminated sheet, in which whitening, cracking, and foaming do not occur when thermoforming is carried out, in particular when deep-draw molding is carried out, and defects do not occur during lamination of a hard coating layer; and a molded article obtained by molding the laminated sheet. A synthetic resin laminated sheet has a coating layer, which includes an acrylic resin, laminated on one surface of a substrate layer including a polycarbonate resin in which a monohydric phenol represented by general formula (1) is used as a chain terminator and is obtained by reacting the monohydric phenol with a dihydric phenol and a carbonate binding agent and has a viscosity average molecular weight of 18000-35000. (In the formula, R1 represents a C8-36 alkyl group or a C8-36 alkenyl group. R2-R5 each represent hydrogen, halogen, or an optionally substituted C1-20 alkyl group or C6-12 aryl group).
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: November 6, 2018
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Yasuyoshi Nakayasu, Ken Ogasawara, Genki Sugiyama, Hidetaka Shimizu
  • Patent number: 10067271
    Abstract: An optical sheet is formed by laminating, by co-extrusion molding, a first layer containing a polycarbonate resin, a second layer containing a polyamide resin, and a third layer, wherein the second layer is laminated between the first layer and the third layer, the first layer and second layer, and the second layer and third layer can each be peeled at the interface, and the outer surface of the first layer has a fine grooved structure. The optical sheet, which is provided with a plurality of layers in such a way, is capable of retaining, a sufficient amount of heat in a laminate in a mold since the entire sheet can be made thick during melt extrusion molding, and is able to improve the transferability of the fine grooved structure. In addition, the optical sheet can be made thinner by using only the peeled first layer as an optical sheet.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 4, 2018
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Osamu Kakinoki, Masahide Takeda, Shotaro Ohno, Takeshi Onishi, Masataka Sugiyama
  • Publication number: 20180215901
    Abstract: The present invention provides a polycarbonate resin composition characterized by containing 73 to 94.5 mass % of a polycarbonate resin (A), 5 to 25 mass % of a phosphorus-based flame retardant (B), and 0.1 to 2 mass % of a fluoropolymer (C), and by having a flow value of 1×0.01 to 10×0.01 cm3/sec at 280° C. The present invention also provides a sheet and a film using the polycarbonate resin composition.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 2, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Haruhiko KUROKAWA, Atsuhiro TOKITA, Hiroki ISHII
  • Patent number: 10035289
    Abstract: The manufacturing apparatus of the present invention comprises a die for extruding a resin plate and a first roller and a second roller for molding the resin plate. The manufacturing apparatus further comprises: an inner deckel for dividing the resin plate and pre-forming a thick section; and a main molding section provided on the first roller and/or the second roller for molding a non-uniform thickness section from the thick section.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: July 31, 2018
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventor: Atsuhiro Tokita
  • Publication number: 20180208763
    Abstract: The present invention provides a polycarbonate resin composition containing a polycarbonate resin (A), a flame retardant (B), and a fluoropolymer (C), said polycarbonate resin composition being characterized in that the fluidity of the fluoropolymer (C), as measured using a Koka flow tester (under the conditions of a measurement temperature of 400° C., a measurement load of 0.98 MPa, and a die hole diameter of 2.1 mm), is 0.1×10?3 cm3/sec or greater. The present invention also provides a sheet and a film.
    Type: Application
    Filed: August 29, 2016
    Publication date: July 26, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Haruhiko KUROKAWA, Atsuhiro TOKITA, Junya ASANO
  • Publication number: 20180201754
    Abstract: The present invention provides: a polycarbonate resin composition which contains 18-75% by mass of (A) a polycarbonate resin having a viscosity average molecular weight of 28,000-60,000, 5-30% by mass of (B) a phosphorus flame retardant, 18-50% by mass of (C) a fibrous or plate-like inorganic filler, and 0.1-2% by mass of (D) a fluoropolymer; and a sheet and a film, each of which uses this polycarbonate resin composition.
    Type: Application
    Filed: August 29, 2016
    Publication date: July 19, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Hiroki ISHII, Haruhiko KUROKAWA, Atsuhiro TOKITA
  • Patent number: 10011095
    Abstract: The present invention has an object of providing a synthetic resin laminate that is excellent in shape stability against a high temperature and high humidity environment, surface hardness and the like. The above object is achieved by a synthetic resin laminate, comprising a substrate layer (B) containing polycarbonate; and a resin layer (A) laminated on one or both of two surfaces of the resin layer (B), the resin layer (A) containing 5 to 55% by mass of (meth)acrylate copolymer (C) and 95 to 45% by mass of polycarbonate (D), wherein the (meth)acrylate copolymer (C) contains an aromatic (meth)acrylate unit (c1) and a methyl methacrylate unit (c2) at a mass ratio (c1/c2) of 5-80/20-95, and the (meth)acrylate copolymer (C) has a mass-average molecular weight of 5,000 to 30,000; and the polycarbonate (D) has a mass-average molecular weight of 21,000 to 40,000.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: July 3, 2018
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Toshinari Aoki, Takeshi Onishi, Kosei Hino