Flexible Diaphragm Patents (Class 162/401)
  • Patent number: 7008509
    Abstract: A molded body formed with pulp mold having projected lines corresponding to a slit-shaped vent package part, capable of being provided by paper-making/dewatering, using a paper making mold, a slurry having fibers dispersed in a liquid so as to obtain a three-dimensional fiber wetted laminated body, moving the laminated body to a dry mold having an inner surface with the slit-shaped vent package, and pressing and drying that laminated body.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: March 7, 2006
    Assignee: Kao Corporation
    Inventors: Kenichi Otani, Toshio Kobayashi, Toshiharu Togashi, Shingo Odajima, Tokihito Sono, Masayuki Osaki, Hiromichi Kimbara, Atsushi Sato
  • Patent number: 6899793
    Abstract: A method of producing a pulp molded article. The method feeds a pulp slurry to a cavity of a papermaking mold having a prescribed cavity shape to form a pulp preform including a main part having an opening and a separable part having a flange and connected to an edge of the opening. A pressing member is inserted into the preform, the pressing member is expanded to press the preform toward the papermaking surface, the preform is removed from the papermaking mold, and then the preform is cut at a joint between the separable part and the main part.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: May 31, 2005
    Assignee: Kao Corporation
    Inventors: Akira Nonomura, Yasushi Yamada, Tokuo Tsuura, Hiroaki Kobayashi, Kenichi Otani
  • Patent number: 6797120
    Abstract: A method for producing a pulp molded article is disclosed. The method comprises the steps of forming and drying a pulp molded precursor (15). The drying step includes a first step and a second step. In the first step, the precursor (15) is set in a cavity of a heating mold, and is hot-pressed. The cavity has a configuration in conformity to the contour of the pulp molded article to be produced. In the second step, the hot-pressed precursor (15) is taken out from the heating mold and is heat-dried in a drying furnace.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: September 28, 2004
    Assignee: Kao Corporation
    Inventor: Akira Nonomura
  • Patent number: 6547931
    Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4), the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: April 15, 2003
    Assignee: Kao Corporation
    Inventors: Yoshiaki Kumamoto, Kenichi Otani, Shinji Otakura, Tokuo Tsuura, Masataka Ishikawa, Toshiyuki Suga, Akira Nonomura
  • Publication number: 20030010462
    Abstract: A method of producing a pulp molded article is disclosed. The method comprises the steps of: feeding a pulp slurry to a cavity (4) of a papermaking mold (1) having a prescribed cavity shape to form a pulp preform (7) comprising a main part (7a) having an opening and a separable part (7b) having a flange (7c) and connected to the edge of the opening; inserting a pressing member (8) into the preform (7); expanding the pressing member (8) to press the preform (7) toward the papermaking surface; removing the preform (7) from the papermaking mold (1); and then cutting the preform (7) at a joint between the separable part (7b) and the main part (7a).
    Type: Application
    Filed: August 15, 2002
    Publication date: January 16, 2003
    Inventors: Akira Nonomura, Yasushi Yamada, Tokuo Tsuura, Hiroaki Kobayashi, Kenichi Otani
  • Patent number: 6454906
    Abstract: A process for producing a pulp molded article comprising inserting a hollow inflatable pressing member 81 which has been made small so as to have smaller cross-sectional contour into a cavity 4 of a mold 1 in which a pulp layer 7 has been formed, and feeding a pressurizing fluid into the inserted pressing member 81 to inflate the pressing member 81 thereby to press the pulp layer 7 onto the inner wall of the cavity 4.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: September 24, 2002
    Assignee: Kao Corporation
    Inventors: Akira Nonomura, Atsushi Sato, Tokuo Tsuura, Yasushi Yamada, Hiroaki Kobayashi, Shingo Odajima, Tokihito Sono
  • Patent number: 4162935
    Abstract: A coffin for a human being molded of papier-mache. The coffin is formed with ribs that provide strength to the structure and at the same time have a decorative effect. The improved method of forming the coffin includes drawing paper pulp onto the molds while the latter are inverted so that there is a heavy flow of pulp by gravity to the open end of the coffin to produce heavier flanges. When the mold is received from the pulp with the coffin molded onto it, an air impervious blanket is placed over the coffin when the vacuum is applied to suction the water from the papier-mache so that greater compression of the pulp is obtained to produce a stronger papier-mache structure and reduce the drying time.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: July 31, 1979
    Assignee: Idra AG
    Inventors: Harry Kollmann, Roland H. Goetsch