公开(公告)号：JPH09259670A

公开(公告)日：1997-10-03

申请号：JP6868996

申请日：1996-03-25

Applicant: TORAY INDUSTRIES

Inventor： SEGAWA MASAKI ,  MIZOSHITA MASAYUKI ,  GOTO YOSHIAKI

IPC: C08K7/14 ,  C08L67/00 ,  C08L67/02 ,  C08L71/00 ,  C08L71/12 ,  C08L77/00 ,  C08L81/00 ,  C08L81/06 ,  H01B17/56 ,  H01B17/60 ,  H01R4/58

Abstract: PROBLEM TO BE SOLVED: To provide an electric part excellent in tracking resistance by using a molded product of thermoplastic resin composition having anisotropy for the electric part provided with two or more electric terminals, and forming ratio a/b of a linear coefficient of expansion (a) between the electric terminals to a linear coefficient of expansion (b) in the direction perpendicular to the direction connecting the electric terminals as a specified value or more. SOLUTION: A molded product 1 for an electric part as an insulator is formed by molding a thermoplastic resin composition having anisotropy, the electric part is constituted by mounting an electric terminal 2 in the molded product 1 for the electric part. Ratio a/b of the linear coefficient of expansion (a) between locations mounting the electric terminal 2 of the molded product 1 for electric part to the linear coefficient of expansion (b) in the direction perpendicular to that connecting the electric terminals of the molded product 1 for electric part is set to 1.1 or more. In this way, the electric part excellent in tracking resistance is obtained.

公开(公告)号：JP2002156533A

公开(公告)日：2002-05-31

申请号：JP2000350351

申请日：2000-11-17

Applicant: TORAY INDUSTRIES

Inventor： SEGAWA MASAKI ,  KOBAYASHI HISAAKI ,  KUNIEDA HIDEKAZU

IPC: G02B6/00 ,  C08F214/26 ,  C08F220/24 ,  D01F8/10 ,  G02B6/036 ,  G02B6/44 ,  G02B6/22

Abstract: PROBLEM TO BE SOLVED: To provide a plastic optical fiber cord having a numerical aperture of about 0.5 and high adhesive strength of a cladding material to 12-nylon resin, capable of connecting and holding a connector in its coating layer and also having well-balanced superior translucency, bending, winding and environmental resistances. SOLUTION: The plastic optical fiber cord has a first clad comprising a specified perfluoroalkyl methacrylate copolymer and a second clad comprising a copolymer containing vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene polymerized in a specified composition ratio.

公开(公告)号：JP2003139971A

公开(公告)日：2003-05-14

申请号：JP2001335427

申请日：2001-10-31

Applicant: TORAY INDUSTRIES

Inventor： KOBAYASHI HISAAKI ,  SEGAWA MASAKI ,  KUNIEDA HIDEKAZU

IPC: G02B6/00 ,  C08F214/26 ,  G02B6/036 ,  G02B6/22

Abstract: PROBLEM TO BE SOLVED: To provide a plastic optical fiber which is capable of fast communication and excellent in the characteristics balance, particularly in the bending resistance characteristics. SOLUTION: The plastic optical fiber has a core essentially comprising a (co)polymer of methylmethacrylate, a first clad comprising a perfluoroalkyl methacrylate copolymer and a second clad comprising a copolymer prepared by polymerizing vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene and other copolymerizable component in specified composition ratio. The theoretical numerical aperture of the fiber is 0.20 to 0.35.

公开(公告)号：JPH11242142A

公开(公告)日：1999-09-07

申请号：JP4263398

申请日：1998-02-24

Applicant: TORAY INDUSTRIES

Inventor： SEGAWA MASAKI ,  YOSHIKAWA MASATOSHI ,  KOBAYASHI HISAAKI

IPC: G02B6/44

Abstract: PROBLEM TO BE SOLVED: To prevent intrusion of light through side faces and to obtain good stripping property by forming an achromatic color resin layer as a primary coating layer and forming a chromatic color layer as a secondary coating layer. SOLUTION: A primary coating layer 2 and further, a secondary coating layer 3 are formed around an optical fiber 1 to form an optical fiber color code. In this method, the primary coating layer 2 is an achromatic color layer, while the secondary coating layer 3 is a chromatic color layer. A pigment or dye such as titanium oxide and carbon black is added to the resin of the primary coating layer 2 to make the coating film achromatic. It is preferable to add carbon black by >=0.1% so as to prevent intrusion of light through the side face. A pigment or dye is added to the resin of the secondary coating layer to make the layer chromatic, and the chroma is preferably controlled to >=4.0 to distinguish from electric wire code by colors. In this method, it is effective to control the thickness ratio (a/b) of the primary coating layer 2 (a) to the secondary coating layer 3 (b) to 0.1 to 0.50, preferably 0.15 to 0.35.

公开(公告)号：JPH10219805A

公开(公告)日：1998-08-18

申请号：JP2559697

申请日：1997-02-07

Applicant: TORAY INDUSTRIES

Inventor： SEGAWA MASAKI

IPC: E03F5/06

Abstract: PROBLEM TO BE SOLVED: To maintain strength by integrally molding a main body part of a resin component on a resin made grating consisting of the main body part having a bottom part, a columnar rib held on the bottom part and a radial rib. SOLUTION: A main body part 1 is molded of a resin component having one or more than one kinds of essential components selected from polyamide, polyester, polycarbonate and polyphenylene oxide. Thereafter, a columnar rib 4 and a radial rib 5 are integrally molded from a bottom part 3 of the main body part 1 consisting of this resin component, and 15-60 weight % of a filler made of talc, wallastonite, calcium silicate, etc., is contained in the resin component. Thereafter, a resin made grating is made by joining a cover part 2 to this main body part 1 by adhesion, thermal welding, etc., and a porous substance made of polyurethane, polyethylene, etc., is filled between the ribs of the main body part 1. Consequently, it is possible to lighten the grating while maintaining high strength.