Patents by Inventor Junichi Tainaka

Junichi Tainaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Crosslinked biodegradable resin continuous foamed sheet and method for production thereof
    Patent number: 7265160
    Abstract: The foam sheet of the present invention is biodegradable, can be recycled, has good processability, is lightweight, exhibits excellent appearance, has practically satisfactory heat resistance and is more acceptable to the environment. There is provided a crosslinked biodegradable resin continuous foam sheet comprising biodegradable resin, and has an expansion rate of about 1.5 to about 50 and a gel fraction of about 3% or more. There is further provided a method for producing the foam sheet comprising the steps of: (1) preparing a sheet from a resin composition comprising a biodegradable resin, a thermal decomposable blowing agent, and a crosslinking promoter; (2) irradiating the resulting sheet with an ionizing radiation to crosslink the resin composition; and (3) subjecting the crosslinked sheet to heat treatment to continuously prepare a crosslinked foam sheet.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: September 4, 2007
    Assignee: Toray Industries, Inc.
    Inventors: Yoshiyuki Oka, Jun Goto, Fusayoshi Akimaru, Noriaki Tsukada, Junichi Tainaka
  • Crosslinked biodegradable resin continuous foamed sheet and method for production thereof
    Publication number: 20050032923
    Abstract: The foam sheet of the present invention is biodegradable, can be recycled, has good processability, is lightweight, exhibits excellent appearance, has practically satisfactory heat resistance and is more acceptable to the environment. There is provided a crosslinked biodegradable resin continuous foam sheet comprising biodegradable resin, and has an expansion rate of about 1.5 to about 50 and a gel fraction of about 3% or more. There is further provided a method for producing the foam sheet comprising the steps of: (1) preparing a sheet from a resin composition comprising a biodegradable resin, a thermal decomposable blowing agent, and a crosslinking promoter; (2) irradiating the resulting sheet with an ionizing radiation to crosslink the resin composition; and (3) subjecting the crosslinked sheet to heat treatment to continuously prepare a crosslinked foam sheet.
    Type: Application
    Filed: November 27, 2002
    Publication date: February 10, 2005
    Applicant: Toray Industries, Inc.
    Inventors: Yoshiyuki Oka, Jun Goto, Fusayoshi Akimaru, Noriaki Tsukada, Junichi Tainaka