Patents by Inventor Henry G. Schirmer

Henry G. Schirmer 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).

  • Patent number: 11440233
    Abstract: A blown film coextrusion line includes a support frame, a plurality of extruders each mounted to the support frame and extending upward at an angle, and a downward facing blown film coextrusion die connected to distal ends of each of the plurality of extruders and receiving individual polymer streams from them. The blown film coextrusion line is compact and sturdy and eliminates much of the floor space and towered mounting structure that was required for conventional blown film coextrusion lines. A corresponding method of making a multilayer coextruded blown film is also provided.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: September 13, 2022
    Assignee: BBS Corporation
    Inventors: Henry G. Schirmer, Roger Blaine Trivette, Matthew G. Hampshire
  • Publication number: 20220161529
    Abstract: A transparent high barrier multilayer coextruded film is useful for high-value packaging applications such as food and medical device packaging. The transparent multilayer coextruded barrier includes first and second outer layers formed using a transparent polyester or polyester copolymer; an inner nanolayer sequence including a plurality of nanolayers a) including ethylene vinyl alcohol, alternating with nanolayers b) including at least one of ethylene ethyl acrylate, low density polyethylene and linear low density polyethylene, each of the nanolayers b) having a degree of crystallinity less than about 45%; and adhesive layers between each of the two outer layers and the inner nanolayer sequence.
    Type: Application
    Filed: October 19, 2021
    Publication date: May 26, 2022
    Inventor: Henry G. Schirmer
  • Publication number: 20220161478
    Abstract: A transparent multilayer coextruded heat shrinkable barrier film is useful for high-value packaging applications such as food and medical device packaging. The transparent multilayer coextruded heat shrinkable barrier film includes first and second outer layers formed using a transparent polyester or polyester copolymer; an inner nanolayer sequence including a plurality of nanolayers a) including ethylene vinyl alcohol, alternating with nanolayers b) including at least one of ethylene ethyl acrylate, low density polyethylene and linear low density polyethylene, each of the nanolayers b) having a degree of crystallinity less than about 45%; and adhesive layers between each of the two outer layers and the inner nanolayer sequence. The film has a light transmittance of at least about 80% and a heat shrunk of at least about ten percent in at least one direction.
    Type: Application
    Filed: October 22, 2021
    Publication date: May 26, 2022
    Inventor: Henry G. Schirmer
  • Patent number: 11338490
    Abstract: A blown film coextrusion line includes a support frame, a plurality of extruders each mounted to the support frame and extending upward at an angle, and a downward facing blown film coextrusion die connected to distal ends of each of the plurality of extruders and receiving individual polymer streams from them. The blown film coextrusion line is compact and sturdy and eliminates much of the floor space and towered mounting structure that was required for conventional blown film coextrusion lines. A corresponding method of making a multilayer coextruded blown film is also provided.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: May 24, 2022
    Assignee: BBS Corporation
    Inventors: Henry G. Schirmer, Roger Blaine Trivette, Matthew G. Hampshire
  • Patent number: 11312057
    Abstract: A blown film line and process for making blown film, including an annular extrusion or coextrusion die, a plurality of nip rollers at a location remote from the annular die, a blown film bubble extruding from the annular die and traveling toward the nip rollers along a traveling path, an air cooling apparatus in the vicinity of the annular die, and a water cooling apparatus located downstream from the air cooling apparatus along the traveling path. The water cooling apparatus includes a wet porous material in direct contact with the blown film bubble and surrounding an outer circumference of the blown film bubble. The wet porous material continuously wipes the blown film bubble with water as the blown film bubble moves along the traveling path.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 26, 2022
    Inventor: Henry G. Schirmer
  • Patent number: 11220035
    Abstract: A modular disk coextrusion die is formed of a plurality of cells stacked together. Each cell includes a symmetrical arrangement of thin annular disks, including a central routing disk and two distribution disks on both sides of the central routing disk. The distribution disks are oriented so that their respective distribution inlet openings oppose each other by about 180 degrees. The symmetrical arrangement permits each cell to process the melt streams in a manner that provides enhanced layer uniformity and bubble stability. By stacking several cells, blown films having up to several hundred layers can be made using twelve, twenty-four or more polymer melt streams. Complex films made from the modular disk coextrusion die are also provided.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 11, 2022
    Inventor: Henry G. Schirmer
  • Publication number: 20210361012
    Abstract: A disposable protective garment for positioning over a wearer's head is provided for use in airplanes, busses, trains, other mass transit and other single-use applications. The disposable protective garment includes a hood formed of tubular blown film that has an at least partly closed top that rests on a wearer's head and an open bottom that rests on a wearer's shoulders. A mask can be integrated into the hood by forming a plurality of apertures in the hood and placing a polymer fabric that acts as a filter over the plurality of apertures. The hood may alternatively be combined with a crown or air filter material positioned over its top; a tubular filter equipped with an electric fan that draws air from above, filters it and directs the clean air downward across the wearer's face; and/or headgear. A barrier film suitable for use in the protective garment as well as other barrier applications is also provided.
    Type: Application
    Filed: April 15, 2021
    Publication date: November 25, 2021
    Inventor: Henry G. Schirmer
  • Patent number: 11173642
    Abstract: A blown film coextrusion line includes a support frame, a plurality of extruders each mounted to the support frame and extending upward at an angle, and a downward facing blown film coextrusion die connected to distal ends of each of the plurality of extruders and receiving individual polymer streams from them. The blown film coextrusion line is compact and sturdy and eliminates much of the floor space and towered mounting structure that was required for conventional blown film coextrusion lines.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: November 16, 2021
    Assignee: BBS Corporation
    Inventors: Henry G. Schirmer, Roger Blaine Trivette, Matthew G. Hampshire
  • Patent number: 11090853
    Abstract: A modular disk coextrusion die is formed of a plurality of cells stacked together. Each cell includes a symmetrical arrangement of thin annular disks, including a central routing disk and two distribution disks on both sides of the central routing disk. The distribution disks are oriented so that their respective distribution inlet openings oppose each other by about 180 degrees. The symmetrical arrangement permits each cell to process the melt streams in a manner that provides enhanced layer uniformity and bubble stability. By stacking several cells, blown films having up to several hundred layers can be made using twelve, twenty-four or more polymer melt streams.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: August 17, 2021
    Inventor: Henry G. Schirmer
  • Publication number: 20200391425
    Abstract: A modular disk coextrusion die is formed of a plurality of cells stacked together. Each cell includes a symmetrical arrangement of thin annular disks, including a central routing disk and two distribution disks on both sides of the central routing disk. The distribution disks are oriented so that their respective distribution inlet openings oppose each other by about 180 degrees. The symmetrical arrangement permits each cell to process the melt streams in a manner that provides enhanced layer uniformity and bubble stability. By stacking several cells, blown films having up to several hundred layers can be made using twelve, twenty-four or more polymer melt streams.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 17, 2020
    Inventor: Henry G. Schirmer
  • Publication number: 20200391427
    Abstract: A modular disk coextrusion die is formed of a plurality of cells stacked together. Each cell includes a symmetrical arrangement of thin annular disks, including a central routing disk and two distribution disks on both sides of the central routing disk. The distribution disks are oriented so that their respective distribution inlet openings oppose each other by about 180 degrees. The symmetrical arrangement permits each cell to process the melt streams in a manner that provides enhanced layer uniformity and bubble stability. By stacking several cells, blown films having up to several hundred layers can be made using twelve, twenty-four or more polymer melt streams. Complex films made from the modular disk coextrusion die are also provided.
    Type: Application
    Filed: April 28, 2020
    Publication date: December 17, 2020
    Inventor: Henry G. Schirmer
  • Publication number: 20200298459
    Abstract: A blown film line and process for making blown film, including an annular extrusion or coextrusion die, a plurality of nip rollers at a location remote from the annular die, a blown film bubble extruding from the annular die and traveling toward the nip rollers along a traveling path, an air cooling apparatus in the vicinity of the annular die, and a water cooling apparatus located downstream from the air cooling apparatus along the traveling path. The water cooling apparatus includes a wet porous material in direct contact with the blown film bubble and surrounding an outer circumference of the blown film bubble. The wet porous material continuously wipes the blown film bubble with water as the blown film bubble moves along the traveling path.
    Type: Application
    Filed: September 6, 2019
    Publication date: September 24, 2020
    Inventor: Henry G. Schirmer
  • Patent number: 10611129
    Abstract: A method of making thin, annular multilayer coextruded films uses a layer sequence repeater module that includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one cell of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: April 7, 2020
    Assignee: Renolit Nederland BV
    Inventor: Henry G. Schirmer
  • Publication number: 20180029338
    Abstract: A layer sequence repeater module for a co-extrusion die includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Application
    Filed: August 23, 2017
    Publication date: February 1, 2018
    Inventor: Henry G. Schirmer
  • Patent number: 9381723
    Abstract: Cellular thin films include a first side separated from a second side, the separation of which defines the thickness of the thin film; at least one layer of a polymeric material arranged along the thickness of the thin film, wherein the polymeric material includes cells and the first and second sides of the thin film have exterior surfaces that have substantially the same thickness as the interior walls forming the cells. The surfaces of the thin films have bumps caused by the cells. The thin exterior surfaces of the thin films is advantageous to allow the films to be flexible.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 5, 2016
    Assignee: University of Washington
    Inventors: Vipin Kumar, John Chunpo Lu, Henry G. Schirmer, Dustin Miller
  • Publication number: 20150093534
    Abstract: A layer sequence repeater module for a co-extrusion die includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 2, 2015
    Inventor: Henry G. SCHIRMER
  • Patent number: 8870561
    Abstract: A layer sequence repeater module for a co-extrusion die includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: October 28, 2014
    Assignee: BBS Corporation
    Inventor: Henry G. Schirmer
  • Publication number: 20130243894
    Abstract: A layer sequence repeater module for a co-extrusion die includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Application
    Filed: January 29, 2013
    Publication date: September 19, 2013
    Applicant: BBS Corporation
    Inventor: HENRY G. SCHIRMER
  • Publication number: 20100297416
    Abstract: Cellular thin films include a first side separated from a second side, the separation of which defines the thickness of the thin film; at least one layer of a polymeric material arranged along the thickness of the thin film, wherein the polymeric material includes cells and the first and second sides of the thin film have exterior surfaces that have substantially the same thickness as the interior walls forming the cells. The surfaces of the thin films have bumps caused by the cells. The thin exterior surfaces of the thin films is advantageous to allow the films to be flexible.
    Type: Application
    Filed: September 12, 2008
    Publication date: November 25, 2010
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Vipin Kumar, John Chunpo Lu, Henry G. Schirmer, Dustin Miller
  • Patent number: 6413595
    Abstract: A coextrusion die includes a plurality of annular cells stacked on top of each other. Each annular cell includes a plurality of openings aligned with openings in the adjacent cell, thus forming multiple streams. Plastic melt may be supplied to the die coplanarly. Stacks of annular disks may be joined to form the annular cells through which plastic melt can be axially directed.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 2, 2002
    Assignee: BBS Corporation
    Inventor: Henry G. Schirmer