Patents Assigned to Nippon Paper Industries, Co.
  • Patent number: 12071728
    Abstract: A method for manufacturing a paper barrier base material includes a step of applying a water vapor barrier layer coating liquid that contains at least a water vapor barrier resin and a pigment onto a paper base material by a curtain coating method to form a water vapor barrier layer. The water vapor barrier layer coating liquid has a spinnability of 0.07 seconds or more and 0.4 seconds or less at a solid content concentration of 32% by weight and a temperature of 25° C. The method is intended to achieve good stability of a coating liquid and good continuous operability.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 27, 2024
    Assignees: NIPPON PAPER INDUSTRIES CO., LTD., JUJO THERMAL OY
    Inventors: Yuri Oishi, Kenta Watanabe, Satoshi Tsuda, Masashi Okamoto, Hiroshi Koyamoto
  • Patent number: 12071499
    Abstract: The present invention has an object to provide a modified polyolefin resin capable of forming a coating film that is excellent in water-resistant adhesiveness under a high temperature condition. The present invention provides a modified polyolefin resin including a graft-modified product in which a component (A) that is a polyolefin resin is graft-modified with a component (B) that is an ?,?-unsaturated carboxylic acid or a derivative thereof, and having a tensile modulus of 250 MPa or higher, and a weight-average molecular weight of 70,000 or more and less than 200,000.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 27, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Ryo Koike, Fumiyasu Sakakibara, Shunji Sekiguchi, Ryuji Doi
  • Publication number: 20240269646
    Abstract: One of problems to be solved is to provide an adsorbing material suitable for canisters and enabling reduction in pressure loss. Another one of the problems to be solved is to provide, using activated carbon fiber, a formed adsorber that is a formed product difficult to be deformed, the formed adsorber serving as an adsorbing material for canisters, the adsorbing material having excellent effects. The formed adsorber for canisters satisfies at least the following conditions (A), (B), and (C). (A) The formed adsorber is a formed product including activated carbon fiber, granular activated carbon, and a binder. (B) A weight ratio of the activated carbon fiber to the granular activated carbon in a total weight of the activated carbon fiber and the granular activated carbon is 5 to 95 parts by weight of the activated carbon fiber to 95 to 5 parts by weight of the granular activated carbon. (C) A weight ratio of the binder in the formed adsorber is 0.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 15, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yoshihide WATANABE, Daisuke IMAI, Yu TAKATA, Dongyeon RYU
  • Patent number: 12053997
    Abstract: Provided is a thermosensitive recording medium having a sufficient water resistance to moisture and humidity, such as for outdoor use in rainy weather and the like, and also having a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like. As the protective layer comprises a specific silane-modified acrylic resin which is an aqueous emulsion of core-shell type p articles, in a thermosensitive recording medium having a thermosensitive recording layer on a substrate and a protective layer on the thermosensitive recording layer, the thermosensitive re cording medium has a sufficient water resistance and also has a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: August 6, 2024
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Kenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
  • Patent number: 12049522
    Abstract: A powder that contains carboxymethylated cellulose nanofibers, said carboxymethylated cellulose nanofibers having a degree of carboxymethyl substitution of 0.50 or less and a cellulose type I crystallinity of 60% or more, and has a median diameter of 10.0 ?m to 150.0 ?m. This powder is suitable usable as an additive.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: July 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yusuke Tada, Kazuhiko Inoue, Takeshi Nakatani
  • Patent number: 12031016
    Abstract: This dispersion composition contains a water-based medium and a carboxymethyl cellulose having a carboxymethyl substitution degree of 0.20 or more and a cellulose-I crystallinity index of 50% or more, a water-based medium is easily dispersed even by low mixing power, and has a high viscosity.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: July 9, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kazuhiko Inoue, Hiroyoshi Suzuki, Kasumi Nishigaya, Takeshi Nakatani
  • Patent number: 12024343
    Abstract: A paper inner container for storage of a refilling liquid content, the paper inner container including a body (11), which includes a body front panel (7), a body right side panel (6), a body left side panel (8), and a body back panel (5). A top surface (12) includes: a top surface forming panel (14) which is continuously provided on an upper edge of the body back panel; a top surface formation assisting panel (16), which is continuously provided on an upper edge of the body front panel, and is folded up on a lower side of the top surface forming panel; and right and left side panels (19, 20), which are continuously provided on upper edges of the body right side panel and the body left side panel, and are folded up along with overlapping of the top surface forming panel and the top surface formation assisting panel.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 2, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Hideki Okude, Takaharu Noda
  • Patent number: 12006389
    Abstract: A modified polyolefin resin may be capable of obtaining an intended adhesion strength regardless of a kind of a base resin thereof even when graft modification is carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. Such a modified polyolefin resin may be a modified product of a polyolefin resin and satisfying (A) and (B): (A): a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; and (B): a ring-opening degree expressed by formula (1) is 40 or more: ring-opening degree=modification degree K×ring-opening rate R??(1), wherein, in formula (1), the modification degree K is a grafting weight (% by weight) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: June 11, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu Ono, Kei Kondo, Koji Kimura, Takato Takenaka, Yuuko Nahara, Shunji Sekiguchi
  • Publication number: 20240166833
    Abstract: A hard coat film having high heat resistance and being excellent in optical properties, hardness, and adhesiveness with hard coat layers. The hard coat film includes hard coat layers on both surfaces of a base material film, and each hard coat layer contains an ionizing radiation curable resin composition. The hard coat film satisfies the following conditions (I), (II), and (III): condition (I): the ionizing radiation curable resin composition contains an acrylic resin including a (meth)acryloyl group; condition (II): the ionizing radiation curable resin composition contains inorganic fine particles or organic fine particles; and condition (III): a peak area ratio 1 ((A/B)×100) is 40% or more (wherein in an infrared spectroscopy spectrum measurement of the ionizing radiation curable resin composition being uncured, A denotes a peak area appearing at 1000 cm?1 to 1120 cm?1, and B denotes a peak area appearing at 1650 cm?1 to 1800 cm?1).
    Type: Application
    Filed: March 29, 2022
    Publication date: May 23, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shin SAITO, Shotaro TOYA, Masahide HASEGAWA
  • Patent number: 11970603
    Abstract: A chlorinated polyolefin resin may have excellent adhesion and can be produced without using a chlorinated solvent and without producing by-products through a series of production processes. Such a chlorinated polyolefin resin may be a chlorinated polyolefin resin having an amount of chlorine of 1% by weight to 45% by weight obtained by chlorinating a raw material composition in the absence of an organic solvent, wherein the raw material composition includes at least a polyolefin A or an acid-modified product thereof which has fluidity at 40° C. or less and a polyolefin B or an acid-modified product thereof which has a melting point of more than 40° C. and 150° C. or less.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: April 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Minoru Yada, Naosuke Komoto
  • Patent number: 11970593
    Abstract: The present invention provides a hard coat film having excellent adhesion to a hard coat layer when a cycloolefin polymer film is used as a base material. The hard coat film of the present invention comprises a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film through a primer layer. This primer layer contains a modified polyolefin resin in which a polyolefin resin is graft-modified with an ?,?-unsaturated carboxylic acid or a derivative thereof, and a (meth)acrylic acid ester. In this modified polyolefin resin, the graft weight of the ?,?-unsaturated carboxylic acid or derivative thereof is 0.4 to 7 wt. % when the amount of the modified polyolefin resin is taken as 100 wt. %.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: April 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeo Suzuki, Narihiro Ilo, Takashi Ino, Yusuke Sugiyama, Yasuaki Yoshida, Takuya Takahashi, Syunji Sekiguchi
  • Patent number: 11958926
    Abstract: A modified polyolefin resin having an intended adhesion strength to various substrates even when graft modification may be carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. The modified polyolefin resin may be a modified product of a polyolefin resin and satisfies conditions (A) to (C): condition (A)—a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; condition (B)—a ring-opening degree expressed by formula (1) is 40 or more; and condition (C)—the polyolefin resin includes an ethylene structural unit, ring-opening degree=modification degree K×ring-opening rate R??(1) wherein, in the formula (1), the modification degree K is a grafting weight (wt. %) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 16, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu Ono, Kei Kondo, Koji Kimura, Takato Takenaka, Yuuko Nahara, Shunji Sekiguchi
  • Patent number: 11945249
    Abstract: The present invention provides a thermosensitive recording medium having a high degree of water resistance and excellent surface qualities. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored basic leuco dye and an electron accepting developing agent on a substrate, but does not have a protective layer on the thermosensitive recording layer, and the thermosensitive recording layer further comprises (i) a carboxy-modified polyvinyl alcohol as a binder, (ii) an epichlorohydrin resin and a modified polyamine/amide resin (excluding those contained in the category of epichlorohydrin resin) as crosslinking agents, and (iii) an acrylic resin with a glass transition temperature (Tg) of lower than or equal to 50 degree C. and a minimum film forming temperature (MFT) of higher than or equal to 40 degree C.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kentaro Kawasaki, Yoshimi Midorikawa, Kenji Hirai
  • Patent number: 11939463
    Abstract: Provided is a resin composition having a large proportion of polyolefin components, allowing preparation of a solution having a high solid content, having a good solution property after long-term storage, having good pigment dispersibility, and including a modified product of component (A): polyolefin resin with component (B): (meth)acrylic acid and/or (meth)acrylic acid ester, in which the weight ratio of the component (A) to the component (B) ((A)/(B)) is 90/10 to 30/70, and the component (B) contains 20% by weight or more of component (B1): an alkoxy (poly)alkylene glycol mono(meth)acrylic acid ester.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: March 26, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru Kono, Hitomi Abe, Minoru Yada, Naosuke Komoto
  • Patent number: 11905662
    Abstract: An object is to provide a paper barrier material resistant to fractures due to water vapor expansion when heated. As a solution, a paper barrier material is provided, which is characterized in that it comprises a gas barrier layer, a seal layer, a paper base material, and a pigment coating layer, being stacked in this order, wherein the laminate consisting only of the paper base material and pigment coating layer has an air permeation resistance of 2,500 seconds or lower as measured based on JAPAN TAPPI No. 5-2: 2000.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 20, 2024
    Assignees: NIPPON PAPER INDUSTRIES CO., LTD., JUJO THERMAL OY
    Inventors: Masaaki Fukunaga, Hiroshi Koyamoto, Yuri Oishi, Masatsugu Kato, Akio Miyajima, Masashi Okamoto
  • Patent number: 11873443
    Abstract: A composition including: a lignin sulfonic acid-based compound and a water-soluble compound; a lignin derivative that is a reaction product of the lignin sulfonic acid-based compound with an aromatic water-soluble compound; or the lignin sulfonic acid-based compound, the water-soluble compound, and the lignin derivative. The composition is a granular product or a liquid product.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: January 16, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Akihiko Nakamura, Kanae Takahashi, Takuma Nakamura, Sumio Tamura, Tubasa Kanenaka
  • Publication number: 20230390737
    Abstract: An object is to provide a new form of formed adsorbers suitable for high performance canisters. A formed adsorber for a canister is to satisfy the following conditions. The formed adsorber satisfies a condition where P0.2/100 expressed by Equation 1: P0.2/100=X÷Y×100??(Equation 1) is 120% or less. In Equation 1 above, X represents an amount of n-butane gas adsorbed per 100 parts by weight of the adsorbing material at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and Y represents an amount of n-butane gas adsorbed per 100 parts by weight of the adsorbing material at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa.
    Type: Application
    Filed: August 22, 2023
    Publication date: December 7, 2023
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Daisuke IMAI, Yoshihide WATANABE, Yu TAKATA, Dongyeon RYU
  • Publication number: 20230390732
    Abstract: An object is to provide an adsorbing material using activated carbon fiber, suitable for motor vehicle canisters, and enabling reduction in pressure loss. Another object is to provide a formed adsorber using activated carbon fiber, with improved mechanical strength, and having excellent effects of an adsorbing material for canisters. The formed adsorber for canisters satisfies the following conditions (1) to (3). (1) The formed adsorber includes: an adsorbing material including activated carbon fiber; and a binder. (2) A ratio of a content of the binder to a content of the adsorbing material including the activated carbon fiber is 0.3 to 20 parts by weight of the binder to 100 parts by weight of the adsorbing material including the activated carbon fiber. (3) The activated carbon fiber has a fiber size of 13.0 ?m or larger.
    Type: Application
    Filed: August 16, 2023
    Publication date: December 7, 2023
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Daisuke IMAI, Yoshihide WATANABE, Yu TAKATA, Dongyeon RYU
  • Patent number: 11834791
    Abstract: A method for manufacturing a paper barrier base material includes a step of applying a water vapor barrier layer coating liquid that contains at least a water vapor barrier resin and a pigment onto a paper base material by a curtain coating method to form a water vapor barrier layer, and a step of applying a gas barrier layer coating liquid that contains at least one polymer selected from water-soluble polymers and water-dispersible polymers onto the water vapor barrier layer by a curtain coating method without a drying step interposed between the two steps to form a gas barrier layer. The gas barrier layer coating liquid has a B-type viscosity equal to or higher than a B-type viscosity of the water vapor barrier layer coating liquid. The method is intended to suppress the occurrence of coating unevenness in wet-on-wet coating by a curtain coating method.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: December 5, 2023
    Assignees: NIPPON PAPER INDUSTRIES CO., LTD., JUJO THERMAL OY
    Inventors: Kenta Watanabe, Yuri Oishi, Satoshi Tsuda, Masashi Okamoto, Hiroshi Koyamoto
  • Patent number: 11807525
    Abstract: An object of the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2200 m2/g; a pore volume ranging from 0.20 to 1.20 cm3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; and a sheet density ranging from 0.030 to 0.200 g/cm3.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: November 7, 2023
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Daisuke Imai, Yoshihide Watanabe, Yuu Takata, Shunsuke Ozawa, Chie Yoshida, Kenichi Fujino