Patents Assigned to Unitika Fibers Ltd.
  • Publication number: 20100329417
    Abstract: Disclosed is a monofilament allowing contrast X-ray radiography. At least part of the monofilament is formed of a thermoplastic resin containing a radiopaque agent. The monofilament contains the radiopaque agent in the thermoplastic resin in a content of 30 to 80% by mass, and has a Young's modulus of 0.1 to 5.0 cN/dtex and a fineness of 500 to 20000 dtex.
    Type: Application
    Filed: November 7, 2008
    Publication date: December 30, 2010
    Applicant: UNITIKA FIBERS LTD.
    Inventors: Seiji Abe, Kenji Chizuka, Shoji Matsumoto, Koji Kakumoto, Takenori Domon, Dai Iwasaki
  • Publication number: 20080299357
    Abstract: This invention provides a fabric having a foamed layer. The fabric is obtained by the foaming method which prevents to expand heat expansible micro capsules in a cross-linked resin. A foamed layer is laminated on the fabric material. The foamed layer is comprising of heat expanded micro capsules, a synthetic resin holding the capsules on the fabric material, silica fine powders which are hydrophilic and fine porous. The fabric is obtained by the following method. A synthetic resin solution comprising of heat expansible micro capsules and the silica fine powders is prepared. The solution is applied on the fabric material at all surface or pattered surface. The synthetic resin layer is formed after drying. After that, the heat expansible micro capsules are expanded by heating.
    Type: Application
    Filed: July 16, 2008
    Publication date: December 4, 2008
    Applicants: UNITIKA FIBERS LTD., SEIREN CO., LTD.
    Inventors: Kiyoshi Nakagawa, Yoshiaki Kurushima, Masahiro Mizuma
  • Patent number: 7074482
    Abstract: An antibacterial polyamide filament which comprises a polyamide resin containing 0.1 to 5.0 mass % of fine zinc oxide particles and exhibits a color difference caused by the treatment with an alkaline solution of 2.5 or less; and a method for producing the antibacterial polyamide filament which comprises adjusting the moisture content of a polyamide resin chip to 0.05 to 2.0 mass %, followed by melt spinning. Preferably, the antibacterial polyamide filament has a bacteriostatic activity after 50 washings of 2.2 or more, which filament can be produced by melt-spinning the polyamide resin to melt spinning and solidifying the resin at a position 400 mm or less from the face of a spinning nozzle.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: July 11, 2006
    Assignee: Unitika Fibers Ltd.
    Inventors: Masaki Nishimura, Takeshi Nishiyama, Mitsuo Omori, Eiji Tsukamoto, Seiji Abe, Masahiro Hosoda, Hideharu Yamamoto, Minoru Fujii, Shuhei Kurata, Kunio Akasaki
  • Patent number: 6742660
    Abstract: An antibacterial, biodegradable extracting container has a filtering surface formed from a water-permeable woven or knitted fabric formed from fibers comprising, as a principal component, an antibacterial, biodegradable polylactate polymer, and having a thickness of 1 to 100 dtex, wherein, preferably, the filtering surface is formed from the woven fabric having a cover factor K of 1600 to 6400, determined in accordance the following equation: K=(N×(A)1/2/T)+(M×(B)1/2/S) wherein, N=warp density (yarns/10 cm), M=weft density (yarns/10 cm), A=thickness (dtex) of the warp yarns, B=thickness (dtex) of the weft yarns, T=specific gravity of the warp yarns and S=specific gravity of the weft yarns.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: June 1, 2004
    Assignees: Yamanaka Ind., Unitika Fibers, Ltd.
    Inventors: Kaichi Suzuki, Kouji Kajiwara, Shuhei Kurata