Patents Assigned to Sohzohkagaku Co., Ltd.
  • Patent number: 5667822
    Abstract: A shaping mold for the production of ultra-thin shaped rubber articles, has a main body which is dipped into a latex liquid so as to make the latex adhered to the surface of the main body. The adhered latex is heat-dried to form an ultra-thin shaped rubber article over the surface. The mold is such that at least the surface of its main body is made of an amorphous carbon and that its bottom part is fitted with electrifying electrodes and has therebetween a heating area to be heated by resistance heating due to its electrification. The same shaping mold from its dipping step through the inspecting step of inspecting the shaped article as adhered to the surface of the mold. In the heat-drying step of the method, the shaped article as adhered to the surface of the shaping mold is heated and dried from the inside of the mold with preventing as much as possible formation of pin holes in the shaped article.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: September 16, 1997
    Assignees: Sohzohkagaku Co., Ltd., Nisshinbo Industries, Inc.
    Inventors: Tomoyuki Hayashi, Yoshiaki Tatsumi, Kinya Miyashita
  • Patent number: 5595704
    Abstract: A shaping mold for the production of ultra-thin shaped rubber articles, has a main body which is dipped into a latex liquid so as to make the latex adhered to the surface of the main body. The adhered latex is heat-dried to form an ultra-thin shaped rubber article over the surface. The mold is such that at least the surface of its main body is made of an amorphous carbon and that its bottom part is fitted with electrifying electrodes and has therebetween a heating area to be heated by resistance heating due to its electrification. The same shaping mold can be used from its dipping step through the inspecting step of inspecting the shaped article as adhered to the surface of the mold. In the heat-drying step of the method, the shaped article as adhered to the surface of the shaping mold is heated and dried from the inside of the mold with preventing as much as possible formation of pin holes in the shaped article.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: January 21, 1997
    Assignees: Sohzohkagaku Co., Ltd., Nisshinbo Industries, Inc.
    Inventors: Tomoyuki Hayashi, Yoshiaki Tatsumi, Kinya Miyashita