Patents Assigned to Mitsubishi Paper Mills Limited
  • Publication number: 20210108373
    Abstract: The present invention provides a coated printing paper having a base paper, and a coating layer arranged on at least one surface of the base paper, wherein, an outermost coating layer positioned on the outermost side with respect to the base paper contains at least kaolin, calcium carbonate, starches, a latex, a dispersant, a lubricant and a cationic resin, in the outermost coating layer, a total amount of the starches and the latex is 5 parts by mass or more and 13 parts by mass or less, and an amount of the dispersant is 0.02 part by mass or more and 0.3 part by mass or less, an amount of the lubricant is 0.25 part by mass or more and 0.6 part by mass or less, and an amount of the cationic resin is 0.25 part by mass or more and 0.
    Type: Application
    Filed: March 13, 2018
    Publication date: April 15, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Jun URASAKI, Masanori NAGOSHI, Hideki TAKADA
  • Patent number: 10964986
    Abstract: An object of the invention is to provide a separator for an electrochemical element in which the occurrence of fluff on the sheet surface thereof is suppressed and an internal short-circuit defect rate is low, and the invention provides a separator for an electrochemical element, comprising: a fibrillated solvent spun cellulose fiber; and a synthetic fiber, wherein the separator for an electrochemical element contains, as the synthetic fiber, from 5 to 40% by weight of a core-sheath type composite fiber having a fiber diameter of 6.0 ?m or less which is composed of: a core component made of a resin having a melting point of 160° C. or more; and a sheath component made of polyethylene.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 30, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Keisuke Ooyama, Takao Masuda
  • Publication number: 20210074981
    Abstract: A coating solution for lithium ion battery separators which comprises inorganic particles, an organic polymer binder and carboxymethyl cellulose having an etherification rate of 1.10 to 2.00 or a salt thereof, or a coating solution for lithium ion battery separators comprising inorganic particles containing magnesium hydroxide having a linseed oil absorption of 30 to 80 (g/100 g), and a separator having a coating layer formed from the coating solution on a substrate and high safety and low internal resistance.
    Type: Application
    Filed: January 23, 2019
    Publication date: March 11, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Tomohiro SATO, Hideaki SAEGUSA, Makoto KATO, Noriko KASAI, Kukjin YOON
  • Patent number: 10906344
    Abstract: A printing paper having a base paper and an outermost coating layer is provided, and satisfies at least one of the following characteristics (I), (II) and (III): (I) when an aqueous solution having a surface tension of 20 mN/m is dropped on the side having the outermost coating layer of the printing paper, a contact angle between the droplet and the outermost coating layer is 40° or more and 65° or less; (II) for the side having the outermost coating layer of the printing paper, a transfer amount of an aqueous solution having a surface tension of 20 mN/m at a contact time of 1 second as determined by the Bristow method is 5.0 ml/m2 or more and 12.0 ml/m2 or less; and (III) on the surface of the outermost coating layer of the printing paper, a maximum peak value of specular reflection light quantity of a point image is 2,000 or more and 30,000 or less.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: February 2, 2021
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori Nagoshi, Tetsuya Nishi, Toru Kaneko, Hideki Takada, Masayuki Takishiro
  • Publication number: 20210010765
    Abstract: An object of the present invention is to provide a paper for total heat exchange element, which has both of the heat transfer property and the moisture permeation property and is also excellent in the gas barrier property, and the present invention relates to a paper for total heat exchange element including a base paper containing a beaten natural pulp and a hygroscopic agent applied to the base paper, wherein a ratio of a fine fraction having a fiber length of 0.05 mm or less in the beaten natural pulp is from 10 to 25%.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 14, 2021
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Yoshiyuki HAMASAKI
  • Patent number: 10818898
    Abstract: A separator for electrochemical elements includes beaten solvent-spun cellulose fibers and rayon fibers having a fiber diameter of 9.5 ?m or less. More preferably, the separator for electrochemical elements has a content of the rayon fibers relative to all fibers of 10 to 25% by mass, and can be applied to electrochemical elements such as electric double layer capacitors, hybrid capacitors, redox capacitors, and lithium secondary batteries. The separator can provide low internal short circuit failure rates and high surface strength.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 27, 2020
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Toshihiro Shigematsu, Masatoshi Kito, Keisuke Ooyama
  • Publication number: 20200273600
    Abstract: An optically transparent conductive material includes: an optically transparent support; and an optically transparent conductive layer on the optically transparent support, the optically transparent conductive layer being electrically connected to a terminal area and including sensor parts extending in one direction, wherein the sensor parts are each made of an irregular net-like pattern of thin metal wires, each sensor part has varying widths and includes corridor portions where the width of the sensor part is relatively narrow and other portions where the width of the sensor part is relatively wide, and the following relation is satisfied: 1.05X?A?1.20X, where A is an average number of intersections in the net-like pattern of thin metal wires per unit area in the corridor portions, and X is an average number of intersections in the net-like pattern of thin metal wires per unit area in other portions.
    Type: Application
    Filed: September 10, 2018
    Publication date: August 27, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Kazuhiko Sunada
  • Publication number: 20200181837
    Abstract: The object is to provide a transfer paper having good image deterioration resistance, color development property and adhesion property. The object is achieved by a transfer paper for use in a transfer textile printing method using sublimation textile ink, which comprises a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment and a binder, at least one of the pigment is amorphous silica, and the binder contains two or more different binders, and at least one of the binders is an ethylene-vinyl acetate copolymer.
    Type: Application
    Filed: April 9, 2018
    Publication date: June 11, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Koji IGARASHI, Jun URASAKI
  • Patent number: 10624335
    Abstract: The present invention relates to a device for cryopreservation of a cell or tissue, including a deposition part on which a cell or tissue is to be deposited, the deposition part having a layer containing a water-soluble polymeric compound on an outermost surface of the deposition part; and a method of cryopreservation using the device.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 21, 2020
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Atsushi Matsuzawa, Katsumitsu Susaki, Yukio Tokunaga
  • Publication number: 20200113176
    Abstract: The present invention aims to provide a device for cryopreservation which enables easy and reliable cryopreservation of a cell or tissue. The device for cryopreservation of a cell or tissue of the present invention includes a deposition part on which a cell or tissue is to be deposited together with a preservation solution, wherein a surface of the deposition part includes a protrusion for holding a cell or tissue and a recess for storing a preservation solution.
    Type: Application
    Filed: June 8, 2018
    Publication date: April 16, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Kakeru Yoshida, Atsushi Matsuzawa, Yukio Tokunaga
  • Publication number: 20200114674
    Abstract: A printing paper having a base paper, and one or more coating layer(s) arranged on at least one surface of the base paper, wherein; in the coating layer(s), an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment, a binder, a lubricant, a dispersant and a cationic resin, wherein the pigment in the outermost coating layer contains kaolin and calcium carbonate, a content of the kaolin and the calcium carbonate is 80 parts by mass or more based on 100 parts by mass of the pigment in the outermost coating layer, and a mass content ratio of the kaolin to the calcium carbonate in the outermost coating layer is 1:9 to 6:4, and the printing paper satisfies at least one of the following characteristics (I), (II) and (III): (I) when an aqueous solution having a surface tension of 20 mN/m is dropped on the side having the outermost coating layer of the printing paper, a contact angle between the droplet and the outermost coating layer is 40° or more and 6
    Type: Application
    Filed: March 12, 2018
    Publication date: April 16, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori NAGOSHI, Tetsuya NISHI, Toru KANEKO, Hideki TAKADA, Masayuki TAKISHIRO
  • Publication number: 20200095726
    Abstract: The object is to provide a transfer textile printing method that satisfies general versatility, simplicity, fixing property, color development property and fineness. The object is achieved by a transfer textile printing method comprising a step (1) of preparing a transfer paper, a step (2) of forming a pattern using a pigment ink on the transfer paper to obtain a printed transfer paper, a step (3) of bringing the printed transfer paper and a textile printing medium into close contact with each other and heating and pressurizing, a step (4) of performing a heat treatment without pressurizing while the printed transfer paper and the textile printing medium remain in close contact with each other, and a step (5) of removing the printed transfer paper from the textile printing medium, wherein the transfer textile printing method comprises the step (3), the step (4), and the step (5) in this order.
    Type: Application
    Filed: April 9, 2018
    Publication date: March 26, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Koji IGARASHI
  • Publication number: 20200091486
    Abstract: It is an object of the present invention to provide a lithium ion battery separator which can be made thin, is excellent in tensile strength and cuttability and has low internal resistance, a low incidence of internal short circuit failure and high cycle characteristics and a lithium ion battery including the separator. In a lithium ion battery separator containing heat-resistant fibers and synthetic resin short fibers, fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml are contained as the heat-resistant fibers, and the content of the fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml is not less than 1.0 mass % to less than 5.0 mass % based on the total of all the fiber components contained in the separator. Modified freeness: This is a value measured in accordance with JIS P8121-2:2012 except that an 80-mesh wire net having a wire diameter of 0.14 mm and an opening of 0.
    Type: Application
    Filed: December 18, 2017
    Publication date: March 19, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Toshihiro SHIGEMATSU
  • Publication number: 20200070103
    Abstract: A semipermeable membrane support containing polyolefin-based fibers, which can withstand repeated washing and backwashing, makes it easy for a semipermeable membrane component to permeate thereinto and difficult for the component to strike therethrough, and is excellent in adhesion to the semipermeable membrane and adhesion between a non-coating surface thereof and a resin frame. The semipermeable membrane support which is used by forming the semipermeable membrane thereon is a wet-laid nonwoven fabric containing core-sheath type conjugate fibers composed of polypropylene as a core component and polyethylene as a sheath component and has a burst strength of 300 to 1,000 kPa, or the Bekk smoothness and 75° mirror surface glossiness of the coating surface on which the semipermeable membrane is to be formed of the semipermeable membrane support being more than the Bekk smoothness and 75° mirror surface glossiness of a non-coating surface on the opposite side.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 5, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Keisuke OYAMA, Yusuke SHIMIZU, Takahito OCHIAI, Takao MASUDA
  • Publication number: 20200039275
    Abstract: A transfer paper used for a transfer printing method using sublimation textile ink, comprising a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment, a binder, a polyacrylic acid salt and an acetylene glycol derivative, has image deterioration resistance, good color development property and excellent adhesion property.
    Type: Application
    Filed: July 3, 2017
    Publication date: February 6, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Koji IGARASHI, Jun URASAKI
  • Publication number: 20200012190
    Abstract: A photosensitive resin composition which comprises (A) an alkali-soluble resin, (B) a photopolymerization initiator and (C) an acrylate monomer and may further comprise (D) a methacrylate monomer, wherein the acrylate monomer (C) comprises (C1) an acrylate monomer having a double bond equivalent of not less than 250 and (C2) azo acrylate monomer having a double bond equivalent of not more than 150, the content of the methacrylate monomer (D) is 0 to 5 mass %, the content of the acrylate monomer having a double bond equivalent of not less than 250 (C1) is 40 to 60 mass %, and the content of the acrylate monomer having a double bond equivalent of not more than 150 (C2) is 40 to 60 mass % based on the acrylate monomer (C), and the content of the photopolymerization initiator (B) is 0.5 to 1.5 mass % based on the photosensitive resin composition, and an etching method and plating method using the above photosensitive resin composition.
    Type: Application
    Filed: March 8, 2018
    Publication date: January 9, 2020
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Munetoshi IRISAWA, Kunihito KAJIYA, Yuji TOYODA
  • Patent number: 10492487
    Abstract: The present invention relates to a jig for vitrification cryopreservation of cell or tissue, having a metallic support, and a vitrification solution absorber including an adhesion layer and a vitrification solution-absorbing layer on the metallic support in the order from the side closer to the metallic support.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: December 3, 2019
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Atsushi Matsuzawa, Katsumitsu Susaki
  • Patent number: 10444919
    Abstract: An optically transparent conductive material including an optically transparent support, sensor parts electrically connected to a terminal area via peripheral wiring parts, and dummy parts not electrically connected to the terminal areas, the sensor parts and the dummy parts being disposed on the optically transparent support, wherein the sensor parts and the dummy parts each have a metal thin wire net-like pattern formed by an assembly of multiple polygons, the metal thin wire pattern of each dummy part includes disconnection parts, and the metal thin wire pattern of each dummy part also includes a region satisfying the following requirement (1) and/or a region satisfying the following requirement (2): (1) each polygon sharing one or more vertices with a polygon having no disconnection part includes at least one disconnection part; and (2) each polygon sharing one or more vertices with at least one of two polygons sharing a side or a vertex and having no disconnection part includes at least one disconnection
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: October 15, 2019
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Takenobu Yoshiki
  • Patent number: 10412958
    Abstract: Provided is a device for vitrification-based cryopreservation which enables easy and reliable vitrification freezing of cells or tissues. The device of the present invention for cell or tissue cryopreservation by vitrification has a porous structure made of a material having a refractive index of 1.45 or less as a vitrification solution absorber.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: September 17, 2019
    Assignees: SCHOOL JURIDICAL PERSON KITASATO INSTITUTE, MITSUBISHI PAPER MILLS LIMITED
    Inventors: Kenji Momozawa, Atsushi Matsuzawa, Katsumitsu Susaki
  • Publication number: 20190252661
    Abstract: An object of the invention is to provide a separator for an electrochemical element in which the occurrence of fluff on the sheet surface thereof is suppressed and an internal short-circuit defect rate is low, and the invention provides a separator for an electrochemical element, comprising: a fibrillated solvent spun cellulose fiber; and a synthetic fiber, wherein the separator for an electrochemical element contains, as the synthetic fiber, from 5 to 40% by weight of a core-sheath type composite fiber having a fiber diameter of 6.0 ?m or less which is composed of: a core component made of a resin having a melting point of 160° C. or more; and a sheath component made of polyethylene.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 15, 2019
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Keisuke OOYAMA, Takao MASUDA