Patents Assigned to Asahi Kasei Fibers Corporation
  • Patent number: 9555149
    Abstract: The purpose of the present invention is to provide a medical material which, while retaining high liquid absorbency and styptic properties through gelation of CMC, can maintain shape stability even after absorbing a liquid; which has excellent conformance to the skin; and through which the body surface to which it is to be applied is visible. This medical material is a structure comprising regenerated cellulose fibers including carboxymethyl cellulose fibers in which the degree of substitution of the hydroxyl groups in the glucose units making up the cellulose molecule is at least 0.1 but less than 0.5, wherein the medical material is characterized in that the structure has the form of a woven and/or nonwoven fabric, and when the structure is impregnated with physiological saline, the range of the 10% modulus in both the longitudinal direction and the lateral direction of the structure is 0.2 N/50 mm-5.0 N/50 nm, inclusive.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: January 31, 2017
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Mika Shinohara, Kyoko Machioka, Masaya Fuke
  • Patent number: 9461290
    Abstract: Provided is a separator which shows excellent performance in electric insulation, electrolyte-holding property and ion- or electron-permeability and which can be stably manufactured. The separator is configured from a laminate non-woven fabric consisting of at least two layers, said layers including a non-woven fabric layer (layer I) that comprises a synthetic fiber having a fiber size of 0.1 ?m or greater and less than 4.0 ?m and a non-woven fabric layer (layer II) that comprises a thermoplastic resin fiber having a fiber size of 4.0-30.0 ?m inclusive, and has a weight per area of 3.0 g/m2 or greater and less than 20.0 g/m2.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: October 4, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yusuke Yamada, Junichi Kusakabe, Rumina Obi, Shinichi Okajima, Kazufumi Kato
  • Patent number: 9455072
    Abstract: An object of the present invention is to provide an elastic signal transmission cable having a length of several centimeters to several meters that has a shape deformation tracking ability and enables high-speed signal transmission. The inventive elastic signal transmission cable has an elasticity of 10% or more and transmission loss of 10 dB/m or less in a relaxed state at 250 MHz, and comprises an elastic cylindrical body having an elasticity of 10% or more and a conductor portion containing at least two conductor wires wound in the same direction around the elastic cylindrical body.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: September 27, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Shunji Tatsumi, Yasunori Yuuki, Hiroyuki Makino
  • Patent number: 9409377
    Abstract: An object of the present invention is to provide a composite membrane support composed of a dry process thermoplastic resin filaments nonwoven fabric having a significantly high uniformity to enable formation of a porous layer free from strike-through or a defect such as pinhole at the film formation, producing no skin layer defect at the formation of a skin layer, and being excellent in the mechanical strength and dimensional stability at high temperatures, and a high-performance composite membrane and a composite membrane element each using the composite membrane support. The composite membrane support of the present invention is a laminate dry process thermoplastic resin filaments nonwoven fabric comprising three or more layers containing at least a meltblown fiber layer as an interlayer and spunbond fiber layers on both sides of the interlayer, wherein the average value of air flow resistance is from 2.0 to 30.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 9, 2016
    Assignees: ASAHI KASEI FIBERS CORPORATION, NITTO DENKO CORPORATION
    Inventors: Minoru Yoshida, Ikuo Ueno, Norihisa Matsuo, Hirotoshi Ishizuka, Hiroki Fujioka, Mieko Nishi
  • Publication number: 20160194832
    Abstract: Provided is a multilayered structure comprising at least one fine cellulose fiber nonwoven fabric layer made of a fine cellulose fiber, wherein the multilayered structure is characterized in that the mean fiber diameter of the fine cellulose fiber forming the fine cellulose fiber non-woven fabric layer is 0.005 to 0.5 ?m, and the mean thickness of the multilayered structure is 10 to 200 ?m, the density thereof is 0.10 to 0.90 g/cm3, and the permeability resistance thereof is 2000 s/100 ml or more. Also provided are an energy recovery ventilation sheet made of this multilayered structure, an energy recovery ventilation element using this energy recovery ventilation sheet as a partitioning material for partitioning two types of air flow of different temperature and/or humidity, and a energy recovery ventilator using this energy recovery ventilation element.
    Type: Application
    Filed: March 10, 2016
    Publication date: July 7, 2016
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventors: Hirofumi ONO, Shuji TAKASU, Atsushi HORII, Satoru YOSHIDA
  • Publication number: 20160193979
    Abstract: The objective of the present invention is to provide a woven fabric that is for an airbag, is a lightweight woven fabric having a low amount of resin coating film, suppresses high pressure air permeability after the passage of time, has superior stability of characteristics after sewing processing, and has superior gas leakage suppression of the sewn section. This woven fabric for an airbag comprises a synthetic fiber at which a resin has been disposed, and is characterized in that in the heating DSC heat-absorption curve of the woven fabric, the ratio of the high-temperature endotherm with respect to the overall endotherm is over 45% of the peak temperature of the melt endotherm in the heating DSC heat-absorption curve of the thread configuring the woven fabric.
    Type: Application
    Filed: August 13, 2014
    Publication date: July 7, 2016
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventor: Fumiaki ISE
  • Publication number: 20160194790
    Abstract: The purpose of the present invention is to improve thermal stability in a lightweight woven fabric that is useful for air bag applications and the like. This woven fabric comprises synthetic fibers, and is characterized in that, with regard to a rising temperature differential scanning calorimetry (DSC) endothermic curve for the woven fabric, the ratio of the amount of heat absorbed on the high temperature side of the maximum temperature of the melting endotherm on the rising temperature DSC endothermic curve for a woven fabric structure, to the overall heat absorbed exceeds 45%.
    Type: Application
    Filed: August 12, 2014
    Publication date: July 7, 2016
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventor: Fumiaki ISE
  • Publication number: 20160184488
    Abstract: Provided is an ultrafine polyester fiber which is useful as a constituent material for a cloth for a stent graft or other medical device that is to be implanted in the body and which can simultaneously solve both a clinical need (diameter reduction) and a clinical challenge (integration of a stent with a stent graft). An ultrafine polyester fiber which has a polyethylene terephthalate content of 98 wt % or more, characterized by: having (1) a reduced viscosity (?sp/c) of 0.80 dl/g or higher and (2) a total fineness of 7 to 120 dtex and a single-fiber fineness of 0.5 dtex or less; and exhibiting (3) a maximum thermal shrinkage stress of 0.05 cN/dtex or more in a temperature range of 80 to 200° C. or (4) a degree of crystallinity of 35% or more in a region spreading from the surface of the fiber to a depth of 0.1 ?m.
    Type: Application
    Filed: September 11, 2014
    Publication date: June 30, 2016
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventors: Keiichi TOYODA, Tetsuko TAKAHASHI, Junichi KOJIMA
  • Publication number: 20160177512
    Abstract: The present invention provides a fine cellulose fiber sheet, of which various properties and functions such as paper making ability, solvent resistance, adhesion, functionalization agent immobilization, surface zeta potential, hydrophilicity, hydrophobicity, and air permeation resistance are finely controlled, through a process having low environmental impact. A fine cellulose fiber sheet according to the present invention fulfills all of the following requirements (1) to (3): (1) comprises fine cellulose fibers having an average fiber diameter of 2 nm or greater and 1000 nm or less; (2) the weight ratio of the fine cellulose fibers is 50 wt % or greater and 99 wt % or less; and (3) the block polyisocyanate aggregate content as a weight ratio is 1 to 100 wt % of the weight of the fine cellulose fibers.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 23, 2016
    Applicant: Asahi Kasei Fibers Corporation
    Inventors: Kazufumi KAWAHARA, Daisuke SATO, Hirofumi ONO, Yamato SAITO
  • Patent number: 9352718
    Abstract: The purpose of the present invention is to provide a base fabric for airbags with excellent deployment speed, internal pressure retention and workability, and an airbag using the same. The inventive base fabric for airbags has resin arranged in at least one surface of the cloth which comprises synthetic fibers, and is characterized in that the amount of resin adhered is from 10 to 50 g/m2 and, further, the weaving thread's filaments is exposed on the resin surface, and the weaving thread's filaments exposure rate is from 1 to 25%.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 31, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Masato Enoki, Fumiaki Ise
  • Publication number: 20160138203
    Abstract: Provided is an elastic circular knitted fabric which exhibits good wear comfort and excellent movement follow-up ability and can contribute to improvement in motor functions, which exhibits little tightness or a reduced shift during an action, which is not limited in application by stretching force, which is useful as a clothing material that is not susceptible to loosing shape due to wearing, and which has both excellent elongation and excellent elongation recovery of elongation.
    Type: Application
    Filed: July 10, 2014
    Publication date: May 19, 2016
    Applicant: Asahi Kasei Fibers Corporation
    Inventor: Shoichi AKITA
  • Patent number: 9341622
    Abstract: An object of the present invention is to provide a hydrophilic cellulose derivative fine particle having a small particle size, a dispersion liquid thereof and a dispersion body thereof; and provide a diagnostic reagent composed of the hydrophilic particle, which is excellent in storage stability and does not require excess components, such as an emulsifier or surfactant. The cellulose derivative fine particle of the present invention is a cellulose derivative fine particle comprising a cellulose derivative with a part of hydroxyl groups of cellulose being substituted with a substituent, wherein the average particle diameter is from 9 to 1,000 nm; and the diagnostic reagent of the present invention is a diagnostic reagent obtained by loading a substance differentially interacting with a test object substance on the above-described cellulose derivative fine particle.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: May 17, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yoshiyuki Shiomi, Toshihiko Matsui, Masanori Doi
  • Publication number: 20160114072
    Abstract: The purpose of the present invention is to provide a medical material which, while retaining high liquid absorbency and styptic properties through gelation of CMC, can maintain shape stability even after absorbing a liquid; which has excellent conformance to the skin; and through which the body surface to which it is to be applied is visible. This medical material is a structure comprising regenerated cellulose fibers including carboxymethyl cellulose fibers in which the degree of substitution of the hydroxyl groups in the glucose units making up the cellulose molecule is at least 0.1 but less than 0.5, wherein the medical material is characterised in that the structure has the form of a woven and/or nonwoven fabric, and when the structure is impregnated with physiological saline, the range of the 10% modulus in both the longitudinal direction and the lateral direction of the structure is 0.2 N/50 mm-5.0 N/50 nm, inclusive.
    Type: Application
    Filed: May 7, 2014
    Publication date: April 28, 2016
    Applicant: Asahi Kasei Fibers Corporation
    Inventors: Mika SHINOHARA, Kyoko MACHIOKA, Masaya FUKE
  • Patent number: 9279201
    Abstract: An elastic warp knitted fabric which exhibits excellent extensibility and extension recovery characteristics and gives good wearing feeling, has excellent motion followability, can contribute to improvement in movement function, further has no limitation in applications due to extension force thereof, and can be used as the material of a garment less likely to lose the shape due to wearing. The elastic warp knitted fabric of the present invention is the elastic warp knitted fabric knitted at least two guide bars, and is characterized in that the elastic fibers are arranged on at least one guide bar and inelastic fibers are arranged on the other guide bar, respectively, both an extension force in the warp direction and that in the weft direction are 100 cN to 600 cN, in extension by 80% of the said knitted fabric, that the ratio of the extension force in the warp direction to that in the weft direction is 0.8 to 1.8.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: March 8, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventor: Shoichi Akita
  • Publication number: 20160040321
    Abstract: Provided is an abrasion-resistant polyester fiber, which has, in particular, a strength within a specific range, anelongation within a specific range and a Young's modulus falling within a specific rangein a specific elongation range on a stress-strain curve, to improve the abrasion resistance of a woven/knitted product for clothing using, in particular, a fine size polyester fiber. The polyester fiber is an abrasion-resistant polyester fiber comprising ethylene terephthalate as a main repeating unit, characterized by satisfying the following requirements: (1) the fineness being from 8 dtex to 200 dtex inclusive; (2) the single yarn fineness being from 1.0 dtex to 4.0 dtex inclusive; (3) the breaking strength being 3.5 cN/dtex or greater; (4) the breaking elongation being from 20% to 50% inclusive; and (5) the minimum differential Young's modulus being 20 cN/dtex or less in an elongation range of from 2% to 5% inclusive on a stress-strain curve of the fiber.
    Type: Application
    Filed: October 20, 2015
    Publication date: February 11, 2016
    Applicant: Asahi Kasei Fibers Corporation
    Inventors: Junko DEGUCHI, Hiroshi NISHIZAKI, Yoshimasa NOTSU
  • Patent number: 9233517
    Abstract: Disclosed is an electromagnetic shielding sheet that has a smaller increase in the thickness of a base after the formation of a metal coating film when compared with conventional electromagnetic shielding sheets, and which has excellent electromagnetic wave shielding properties despite a small amount of adhered metal. According to the present invention, the electromagnetic shielding sheet can endure metal working processes and has high electromagnetic wave shielding properties, resulting in a thin, very flexible fabric sheet. Specifically disclosed is an electromagnetic shielding sheet which is composed of a laminated non-woven fabric that has at least a first layer and a second layer, and which is characterized in that the first layer is a layer of thermoplastic synthetic fibers having a fiber diameter of 6 ?m to 50 ?m, the second layer is a layer of ultrafine fibers having a fiber diameter of 0.1 ?m to 5.0 ?m, and a metal is adhered to at least one surface of the sheet.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 12, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Kazufumi Kato, Kazuaki Shikata, Rumina Obi, Ikuo Ueno
  • Publication number: 20150293082
    Abstract: An object of the present invention is to provide a hydrophilic cellulose derivative fine particle having a small particle size, a dispersion liquid thereof and a dispersion body thereof; and provide a diagnostic reagent composed of the hydrophilic particle, which is excellent in storage stability and does not require excess components, such as an emulsifier or surfactant. The cellulose derivative fine particle of the present invention is a cellulose derivative fine particle comprising a cellulose derivative with a part of hydroxyl groups of cellulose being substituted with a substituent, wherein the average particle diameter is from 9 to 1,000 nm; and the diagnostic reagent of the present invention is a diagnostic reagent obtained by loading a substance differentially interacting with a test object substance on the above-described cellulose derivative fine particle.
    Type: Application
    Filed: June 25, 2015
    Publication date: October 15, 2015
    Applicant: Asahi Kasei Fibers Corporation
    Inventors: Yoshiyuki SHIOMI, Toshihiko Matsui, Masanori Doi
  • Patent number: 9096690
    Abstract: An object of the present invention is to provide a hydrophilic cellulose derivative fine particle having a small particle size, a dispersion liquid thereof and a dispersion body thereof; and provide a diagnostic reagent composed of the hydrophilic particle, which is excellent in storage stability and does not require excess components, such as an emulsifier or surfactant. The cellulose derivative fine particle of the present invention is a cellulose derivative fine particle comprising a cellulose derivative with a part of hydroxyl groups of cellulose being substituted with a substituent, wherein the average particle diameter is from 9 to 1,000 nm; and the diagnostic reagent of the present invention is a diagnostic reagent obtained by loading a substance differentially interacting with a test object substance on the above-described cellulose derivative fine particle.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: August 4, 2015
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yoshiyuki Shiomi, Toshihiko Matsui, Masanori Doi
  • Publication number: 20150171397
    Abstract: Provided is a separator which shows excellent performance in electric insulation, electrolyte-holding property and ion- or electron-permeability and which can be stably manufactured. The separator is configured from a laminate non-woven fabric consisting of at least two layers, said layers including a non-woven fabric layer (layer I) that comprises a synthetic fiber having a fiber size of 0.1 ?m or greater and less than 4.0 ?m and a non-woven fabric layer (layer II) that comprises a thermoplastic resin fiber having a fiber size of 4.0-30.0 ?m inclusive, and has a weight per area of 3.0 g/m2 or greater and less than 20.0 g/m2.
    Type: Application
    Filed: April 4, 2013
    Publication date: June 18, 2015
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yusuke Yamada, Junichi Kusakabe, Rumina Obi, Shinichi Okajima, Kazufumi Kato
  • Patent number: 9055771
    Abstract: To provide a brassiere with an excellent effect of reducing motion of the breasts during movement, or in other words, excellent vibration resistance, and preferably a brassiere that also has excellent beauty appearance and comfort. The brassiere comprises a pair of cup sections, a joint linking together the front center sides of the cup sections, wing sections, and straps whose edges are connected to the pair of cup sections and the wing sections, and having an anti-vibration section at a specific location.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: June 16, 2015
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Junko Deguchi, Yasushi Minari, Yuji Yoshida