Patents by Inventor Doseok Lee

Doseok Lee 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).

  • Tenter oven and manufacturing method for stretched film
    Patent number: 9522488
    Abstract: A tenter oven stretches a thermoplastic resin film in the width direction thereof, wherein an air blowing nozzle provided therein that blows heated air onto a film running along a film passing surface is a proximate nozzle in which an air blowing opening provided on the air blowing surface thereof is formed as a slit, a distance (L) between the air blowing surface and the film passing surface and a slit width (B) of the slit satisfy the relationship expressed by the equation, (L/B)?10, and the distance (L) is 150 mm or less.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 20, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Doseok Lee, Takuya Kawagoe, Hiroyuki Inoue
  • Apparatus for producing a thermoplastic resin film
    Patent number: 9266273
    Abstract: A thermoplastic resin film manufacturing method and manufacturing device are disclosed wherein an air volume sprayed by the auxiliary cooling device onto the surface of the film on the opposite side thereof to the cooling drum side thereof is set to be larger than the suction amount by an exhaust mechanism between nozzles, to avoid the suction of the air containing the high concentration of oligomer around the extrusion die into the auxiliary cooling device, thereby preventing precipitation and deposition of the oligomer onto spraying nozzles within the auxiliary cooling device and the suction surface of the exhaust mechanism between nozzles.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: February 23, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Doseok Lee, Hiroyuki Inoue, Hiroyuki Aso
  • TENTER OVEN AND MANUFACTURING METHOD FOR STRETCHED FILM
    Publication number: 20140013612
    Abstract: A tenter oven stretches a thermoplastic resin film in the width direction thereof, wherein an air blowing nozzle provided therein that blows heated air onto a film running along a film passing surface is a proximate nozzle in which an air blowing opening provided on the air blowing surface thereof is formed as a slit, a distance (L) between the air blowing surface and the film passing surface and a slit width (B) of the slit satisfy the relationship expressed by the equation, (L/B)?10, and the distance (L) is 150 mm or less.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 16, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Doseok Lee, Takuya Kawagoe, Hiroyuki Inoue
  • METHOD AND APPARATUS FOR PRODUCING A THERMOPLASTIC RESIN FILM
    Publication number: 20120200002
    Abstract: A thermoplastic resin film manufacturing method and manufacturing device are disclosed wherein an air volume sprayed by the auxiliary cooling device onto the surface of the film on the opposite side thereof to the cooling drum side thereof is set to be larger than the suction amount by an exhaust mechanism between nozzles, to avoid the suction of the air containing the high concentration of oligomer around the extrusion die into the auxiliary cooling device, thereby preventing precipitation and deposition of the oligomer onto spraying nozzles within the auxiliary cooling device and the suction surface of the exhaust mechanism between nozzles.
    Type: Application
    Filed: October 4, 2010
    Publication date: August 9, 2012
    Inventors: Doseok Lee, Hiroyuki Inoue, Hiroyuki Aso