Patents by Inventor Shichen DOU

Shichen DOU 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).

  • Publication number: 20190299578
    Abstract: The present disclosure is directed to a film formulation that resulted in a substantially non-migratory cold seal release film with improved blocking resistance. Specifically, the multilayered biaxially oriented polypropylene film can include a core layer of polypropylene homopolymer; a first outer layer on one side of the core layer that can be suitable for sealing, printing, or coating; and a second outer layer on the opposite side of the core layer that is a blocking resistant layer comprising thermoplastic polymers which reduce blocking tendency.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Applicant: Toray Plastics (America), Inc.
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Publication number: 20190299579
    Abstract: The present disclosure is directed to a film formulation that resulted in a substantially non-migratory cold seal release film with improved blocking resistance. Specifically, the multilayered biaxially oriented polypropylene film can include a core layer of polypropylene homopolymer; a first outer layer on one side of the core layer that can be suitable for sealing, printing, or coating; and a second outer layer on the opposite side of the core layer that is a blocking resistant layer comprising thermoplastic polymers which reduce blocking tendency.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Applicant: Toray Plastics (America), Inc.
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Publication number: 20190299580
    Abstract: The present disclosure is directed to a film formulation that resulted in a substantially non-migratory cold seal release film with improved blocking resistance. Specifically, the multilayered biaxially oriented polypropylene film can include a core layer of polypropylene homopolymer; a first outer layer on one side of the core layer that can be suitable for sealing, printing, or coating; and a second outer layer on the opposite side of the core layer that is a blocking resistant layer comprising thermoplastic polymers which reduce blocking tendency.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Applicant: Toray Plastics (America), Inc.
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Patent number: 10357913
    Abstract: Described are transparent oriented polypropylene films with improved barrier properties and methods of making these films. The films and methods include a core layer comprising polypropylene, hydrocarbon resin, and polyethylene wax to improve moisture vapor barrier properties, an optional barrier layer comprising polar polymers to improve oxygen barrier properties, and optional skin layers to improve heat sealing, winding, printing, and/or adhesion.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: July 23, 2019
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Tracy A. Paolilli, Keunsuk P. Chang
  • Publication number: 20180162035
    Abstract: Described are transparent oriented polypropylene films with improved barrier properties and methods of making these films. The films and methods include a core layer comprising polypropylene, hydrocarbon resin, and polyethylene wax to improve moisture vapor barrier properties, an optional barrier layer comprising polar polymers to improve oxygen barrier properties, and optional skin layers to improve heat sealing, winding, printing, and/or adhesion.
    Type: Application
    Filed: January 29, 2018
    Publication date: June 14, 2018
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Tracy A. PAOLILLI, Keunsuk P. CHANG
  • Publication number: 20170282507
    Abstract: Described are coextruded multi-layer biaxially oriented polyolefin barrier films with improved processability, moisture vapor barrier, and stiffness. The disclosed films comprise a cyclic olefin copolymer (COC) core layer blended with hydrogenated hydrocarbon resin and at least one outer layer having functionality for solvent resistance, heat sealing, or winding, or printing/coatings or adhesion for lamination.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 5, 2017
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Patent number: 9669607
    Abstract: A laminate film comprising a core layer comprising of a high crystalline propylene homopolymer blended with an amount of hydrocarbon resin; crystalline polyethylene wax; and a fluoropolymer and/or a metal oxide nanoparticle which exhibits excellent transparency and moisture vapor barrier properties. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, or a heat-sealable polyolefin-containing layer, or combinations thereof.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: June 6, 2017
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Keunsuk P. Chang
  • Patent number: 9630383
    Abstract: A laminate film comprising a core layer comprising of a high crystalline propylene homopolymer blended with an amount of hydrocarbon resin; crystalline polyethylene wax; and a fluoropolymer and/or a metal oxide nanoparticle which exhibits excellent transparency and moisture vapor barrier properties. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, or a heat-sealable polyolefin-containing layer, or combinations thereof.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: April 25, 2017
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Keunsuk P. Chang
  • Publication number: 20170015821
    Abstract: Described are transparent oriented polypropylene films with improved barrier properties and methods of making these films. The films and methods include a core layer comprising polypropylene, hydrocarbon resin, and polyethylene wax to improve moisture vapor barrier properties, an optional barrier layer comprising polar polymers to improve oxygen barrier properties, and optional skin layers to improve heat sealing, winding, printing, and/or adhesion.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 19, 2017
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Tracy A. PAOLILLI, Keunsuk P. CHANG
  • Patent number: 9492962
    Abstract: Described are metallized biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. It has been found that when these films are metallized, moisture barrier properties are surprisingly improved compared to conventional metallized BOPLA films. Specifically, the moisture barrier of the films may be 2.0 g/m2/day or less at 38° C. and 90% relative humidity. The films can be used, for example, in packaging applications. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: November 15, 2016
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Mark S. Lee, Claudio M. Paulino, Nao Yokota, Keunsuk P. Chang
  • Publication number: 20160207293
    Abstract: A laminate film comprising a core layer comprising of a high crystalline propylene homopolymer blended with an amount of hydrocarbon resin; crystalline polyethylene wax; and a fluoropolymer and/or a metal oxide nanoparticle which exhibits excellent transparency and moisture vapor barrier properties. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, or a heat-sealable polyolefin-containing layer, or combinations thereof.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Publication number: 20160167347
    Abstract: Described are heat sealable and metallized multi-layer biaxially oriented polypropylene films and methods of making these films. The films and methods include a novel sealant composition having a polymeric coupling agent, which is used to form strong chemical linkages between anti-blocking agent (ABA) particles and the polymer matrix. The polymeric coupling agents enhance the nucleating efficiency of ABA particles and co-crystallize with polymer chain segments surrounding the ABA particles. Polymeric films with coextruded sealant layers can be made with improved morphology, thermal behavior, and dynamic rheological properties which can be easily released without sticking to cooling or casting drums at high film-making production speeds.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 16, 2016
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Chang-Yeol JUNG, Shichen DOU, Will E. NUNN, Jason J. BENZING, Keunsuk P. CHANG
  • Patent number: 9238324
    Abstract: Described are biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. The films can be used, for example, in packaging applications. The films can be metallized, or combined with barrier coatings or layers, for improved gas barrier properties particularly for moisture vapor transmission barrier desired in packaging applications. The films can also be printing films for packaging applications and may be transparent or matte in appearance. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: January 19, 2016
    Assignee: TORAY PLASTICS (AMERCIA), INC.
    Inventors: Shichen Dou, Mark S. Lee, Claudio M. Paulino, Nao Yokota, Keunsuk P. Chang
  • Patent number: 9221213
    Abstract: A laminate film including a first polylactic acid layer; a second metal-receiving layer including PVOH, EVOH, or a blend thereof on a side of the first polylactic acid layer; and a metal layer deposited on a side of the metal-receiving layer opposite the polylactic acid layer. The metal-receiving layer may be coextruded with the polylactic acid first layer or may be a coating applied to one side of the polylactic acid first layer. This laminate film exhibits excellent gas and moisture barrier properties, appearance, and metal adhesion. It may also include a heat sealable or winding improving layer on the side opposite the metal receiving-layer of the first polylactic acid layer.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: December 29, 2015
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Tracy A. Paolilli, John J. Fitch, Michael F. Brandmeier, Keunsuk P. Chang
  • Publication number: 20150336359
    Abstract: A laminate film comprising a core layer comprising of a high crystalline propylene homopolymer blended with an amount of hydrocarbon resin; crystalline polyethylene wax; and a fluoropolymer and/or a metal oxide nanoparticle which exhibits excellent transparency and moisture vapor barrier properties. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, or a heat-sealable polyolefin-containing layer, or combinations thereof.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 26, 2015
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Keunsuk P. CHANG
  • Patent number: 9150004
    Abstract: Multi-layer biaxially oriented polylactic acid (BOPLA) film with a novel formulation improves the heat seal initiation temperature and heat seal performance of BOPLA films while maintaining good optical clarity. The film may include a core layer including polylactic acid base polymer resin, and a heat sealable layer including amorphous polylactic acid base polymer and a modifier comprising polycaprolactone or poly(butylene-adipate-co-butylene terephthalate).
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: October 6, 2015
    Assignee: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen Dou, Mark S. Lee, Keunsuk P. Chang
  • Patent number: 8795811
    Abstract: Embodiments herein relate to a polyolefin-containing film comprising a solidified form of a melt, the melt comprising at least 1 weight percent shredded recycled crosslinked vinyl-alcohol polymer coated polyolefin material and an amount of a compatibilizing agent and/or an un-crosslinking agent configured to un-crosslink the crosslinked vinyl-alcohol in the melt, the polyolefin-containing film having an average dimple count of less than about 50 dimples/4 in2, and method of manufacturing the same.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 5, 2014
    Assignee: Toray Plastics (America), Inc.
    Inventors: Joshua R. Cloutier, Shichen Dou, Claudio Paulino, Chang Yeol Jung
  • Publication number: 20140004301
    Abstract: Embodiments herein relate to a polyolefin-containing film comprising a solidified form of a melt, the melt comprising at least 1 weight percent shredded recycled crosslinked vinyl-alcohol polymer coated polyolefin material and an amount of a compatibilizing agent and/or an un-crosslinking agent configured to un-crosslink the crosslinked vinyl-alcohol in the melt, the polyolefin-containing film having an average dimple count of less than about 50 dimples/4 in2, and method of manufacturing the same.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: Toray Plastics (America), Inc.
    Inventors: JOSHUA R. CLOUTIER, Shichen Dou, Claudio Paulino, Chang Yeol Jung
  • Publication number: 20140004336
    Abstract: Described are polyolefin laminate films including a core layer, a first outer layer on one side including a blend of 5-20 wt % modified polar polyolefin, 5-20 wt % ethylene-propylene copolymer and 80-90 wt % mini-random polypropylene, and an optional second outer layer on the other side of said core layer opposite the first outer layer, including mini-random polypropylene or copolymers or combinations thereof. The laminate film is suitable for hot melt adhesive lamination with paper or cardboard to package a product.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Scott NARKEVICIUS, John J. FITCH
  • Publication number: 20110244185
    Abstract: Described are biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. The films can be used, for example, in packaging applications. The films can be metallized, or combined with barrier coatings or layers, for improved gas barrier properties particularly for moisture vapor transmission barrier desired in packaging applications. The films can also be printing films for packaging applications and may be transparent or matte in appearance. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.
    Type: Application
    Filed: December 23, 2010
    Publication date: October 6, 2011
    Applicant: TORAY PLASTICS (AMERICA), INC.
    Inventors: Shichen DOU, Mark S. Lee, Claudio M. Paulino, Nao Yokota, Keunsuk P. Chang