Patents by Inventor Reiichi KONISHI

Reiichi KONISHI 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).

  • Method of manufacturing sheet for food containers
    Patent number: 8470224
    Abstract: This invention relates to a method of manufacturing sheet for food containers, which comprises: adding a chain extender to moist flakes of recovered PET; charging the flakes of recovered PET containing the chain extender into an extruder having two or more vent holes, melting and kneading the flakes of recovered PET with sucking to degas through the vent holes, while molecular chains of the recovered PET of which the molecular weight has been lowered are bonded to each other by the chain extender to render the molecular weight higher, and simultaneously, ethylene glycol and acetaldehyde, produced during depolymerization by water and heat, are trapped by the chain extender to remove residual aldehydes; and extruding the recovered PET from the extruder into sheet.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 25, 2013
    Assignee: Nakamoto Packs Co., Ltd.
    Inventors: Katsuro Sasauchi, Reiichi Konishi
  • METHOD OF MANUFACTURING SHEET FOR FOOD CONTAINERS
    Publication number: 20110221097
    Abstract: This invention relates to a method of manufacturing sheet for food containers, which comprises: adding a chain extender to moist flakes of recovered PET; charging the flakes of recovered PET containing the chain extender into an extruder having two or more vent holes, melting and kneading the flakes of recovered PET with sucking to degas through the vent holes, while molecular chains of the recovered PET of which the molecular weight has been lowered are bonded to each other by the chain extender to render the molecular weight higher, and simultaneously, ethylene glycol and acetaldehyde, produced during depolymerization by water and heat, are trapped by the chain extender to remove residual aldehydes; and extruding the recovered PET from the extruder into sheet.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 15, 2011
    Applicant: NAKAMOTO PACKS CO., LTD.
    Inventors: Katsuro SASAUCHI, Reiichi KONISHI