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    TENNIS BALL
    37.
    发明专利
    TENNIS BALL 失效

    公开(公告)号：JPH053932A

    公开(公告)日：1993-01-14

    申请号：JP16201691

    申请日：1991-06-05

    Applicant: SUMITOMO RUBBER IND

    Inventor： NAKAMURA MASAO ,  TOMINAGA ICHIRO

    IPC: A63B39/06

    Abstract: PURPOSE:To improve the abrasion resistance of felt while maintaining the external appearance of the felt covering the core of a tennis ball, and suppressing the fuzz during the play. CONSTITUTION:As the constituent fiber of the felt covering a core, polyterephtharate fiber, which is the fiber consisting of polymer wherein 90% or more of all repeating units of a molecular chain are polyethylene terephtharate units and is equipped with the following properties at the same time, is used. (A): dry thermal shrinkage factor/intrinsic viscosity of polymer; S150 deg.C/IV=5.0%-7.5%. (B): birefringence; nD=170X10 -185X10 . (C): crystal orientation factor; fc=0.935-0.950. (D): noncrystal molecular orientation parameter; F-0.75-0.90.

    REINFORCING MATERIAL, STRUCTURAL MATERIAL AND THEIR PRODUCTION
    39.
    发明专利
    REINFORCING MATERIAL, STRUCTURAL MATERIAL AND THEIR PRODUCTION 失效

    公开(公告)号：JPH04202531A

    公开(公告)日：1992-07-23

    申请号：JP33756390

    申请日：1990-11-30

    Applicant: SUMITOMO RUBBER IND

    Inventor： TOMINAGA ICHIRO ,  NAKAMURA YOSHINOBU

    IPC: B29B11/16 ,  B29B15/08 ,  B29K105/06 ,  C08J5/04

    Abstract: PURPOSE:To obtain a reinforcing material having excellent strength and uniform ity and useful for racket frame, etc., by fixing fibers such as continuous fibers to a substrate cloth by stitching, etc. CONSTITUTION:The objective reinforcing material can be produced by fixing continuous fibers and/or long fibers (e.g. carbon fiber) to a substrate cloth having the form of mat, etc., and made of glass fiber, etc., by stitching and/or bonding. A structural material having excellent strength is obtained by forming the above reinforcing material to a prescribed form, impregnating the material with a polymerizable monomer (e.g. epsilon-caprolactam), a polymerization catalyst (e.g. sodium hydride) and a polymerization initiator (e.g. N-acetyl-epsilon-caprolactam) and thermally curing the impregnated liquid.

    THERMAL TRANSFER FILM FOR MARKING AND TRANSFER METHOD USING IT
    40.
    发明专利
    THERMAL TRANSFER FILM FOR MARKING AND TRANSFER METHOD USING IT 失效

    公开(公告)号：JPH03189187A

    公开(公告)日：1991-08-19

    申请号：JP32931889

    申请日：1989-12-19

    Applicant: SUMITOMO RUBBER IND

    Inventor： TOMINAGA ICHIRO ,  NAKAMURA YOSHINOBU

    IPC: B41M5/025 ,  B41M5/382 ,  B41M5/40 ,  B41M5/42

    Abstract: PURPOSE:To mark a small lot and multikinds of images favorably by the structure wherein a thermal transfer marking agent is laminated on a substrate, and a masking material having a predetermined image is laminated on said marking agent layer. CONSTITUTION:A marking agent is applied on a substrate by coating to form a marking agent layer thereon. Furthermore, a masking material is applied on a non-transfer part of the marking agent layer by coating to form a masking material layer. In this manner, the non-transfer part of the marking agent layer is interrupted from coming into contact with an article to be marked, whereby only a transfer part of the marking agent layer is transferred. In one of the methods for forming the masking material, paper or plastic with a cut part of a graphic to be marked is used as the masking material, and this is bonded on the marking agent layer. In the other method, a photosensitive composition is applied on the marking agent layer by coating to form the masking material layer.

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