Patents Assigned to Ishizu Machinery Co., Ltd.
  • Process and apparatus for production of toilet paper rolls having no core
    Patent number: 5407509
    Abstract: Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 18, 1995
    Assignee: Ishizu Machinery Co., Ltd.
    Inventors: Noboru Ishizu, Teruo Takahashi, Tomoyuki Shinohara
  • Process and apparatus for production of toilet paper rolls having no core
    Patent number: 5352319
    Abstract: Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: October 4, 1994
    Assignee: Ishizu Machinery Co., Ltd.
    Inventors: Noboru Ishizu, Teruo Takahashi, Tomoyuki Shinohara