Patents by Inventor Erland R. Sandstrom

Erland R. Sandstrom 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: 7955670
    Abstract: A method of making a texture-coated and/or insulation coated container from a flat paperboard blank in which a heat-hardenable liquid polymeric binder texturizing and/or insulating agent coating mixture is applied to one surface of the blank in a pattern of covered and open areas. This coating mixture is subjected to heat to cure the polymeric binder and expand the texturizing and/or insulating agent, optionally treated with moisture, and optionally heated to form the blank into the shape of a container, and the container produced by this method. The containers such as cups, plates, etc., are useful in food service. These containers have a coefficient of static friction which is about 0.2 to 2.0 and over and a kinetic coefficient of friction which is about 0.22 to 1.5.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: June 7, 2011
    Assignee: Dixie Consumer Products LLC
    Inventors: Dean P. Swoboda, Kenneth J. Shanton, Erland R. Sandstrom
  • Patent number: 6919111
    Abstract: An improved paperboard has been bulk enhanced by retaining a substantial portion of bulk-enhanced additives including expandable microspheres in a suitable distribution within the paperboard. The cellulosic paperboard web has an overall fiber weight (w) of at least 40 lbs. per 3000 square feet and, at a fiber density of 3, 4.5, 6.5, 7, 8.3, and 9 pounds per 3000 square foot ream at a fiberboard thickness of 0.001 inches, has a GM Taber stiffness of at least about 0.00246 w2.63 grams-centimeter/fiber mat density1.63, and a GM tensile stiffness of at least about 615+13.18 w pounds per inch. The high retention of the bulk enhancing additives is believed to result from the incorporation of suitable retention aids. The resulting paperboard has better GM Taber stiffness values and GM tensile stiffness than prior art paperboards. The paperboard also has increased strain to failure and is able to be formed into suitable paperboard containers without loss of integrity.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: July 19, 2005
    Assignee: Fort James Corporation
    Inventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
  • Patent number: 6866905
    Abstract: An injection blow-molded disposable tumbler is formed from a polymeric material and includes a fortified upper rim having a thickness greater than the adjacent sidewall. The tumbler may be formed of a variety of resinous materials and exhibits improved toughness and crush resistance as well as aesthetic qualities particulary desired by consumers.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: March 15, 2005
    Assignee: Fort James Corporation
    Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
  • Publication number: 20040226850
    Abstract: A set of nestable containers may be nested. Adhering means, such as an adhesive or a hook and loop fastener, may be provided on the exterior of an outer container of the nest. One(s) of the containers may have anti-jamming means, such as scoring, embossing, a spacer, a hole, a projection, a recess, a friction reducer, and the like, for easing the release of containers from a nest of containers. Containers may be nested in a collapsed condition.
    Type: Application
    Filed: April 7, 2004
    Publication date: November 18, 2004
    Inventors: Janica S. Behnke, Timothy P. Hartjas, Mark B. Littlejohn, Joseph R. Pounder, Erland R. Sandstrom, Michael A. Schmeizer, Dean P. Swoboda, Rebecca E. Whitmore
  • Publication number: 20040197500
    Abstract: A method of making a texture-coated and/or insulation coated container from a flat paperboard blank in which a heat-hardenable liquid polymeric binder texturizing and/or insulating agent coating mixture is applied to one surface of the blank in a pattern of covered and open areas. This coating mixture is subjected to heat to cure the polymeric binder and expand the texturizing and/or insulating agent, optionally treated with moisture, and optionally heated to form the blank into the shape of a container, and the container produced by this method. The containers such as cups, plates, etc., are useful in food service. These containers have a coefficient of static friction which is about 0.2 to 2.0 and over and a kinetic coefficient of friction which is about 0.22 to 1.5.
    Type: Application
    Filed: September 6, 2002
    Publication date: October 7, 2004
    Applicant: Fort James Corporation
    Inventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
  • Publication number: 20040142132
    Abstract: An injection blow-molded disposable tumbler is formed from a polymeric material and includes a fortified upper rim having a thickness greater than the adjacent sidewall. The tumbler may be formed of a variety of resinous materials and exhibits improved toughness and crush resistance as well as aesthetic qualities particularly desired by consumers. In a particularly preferred embodiment, thick-walled polycarbonate tumblers are prepared from hydrolysis-stabilized polycarbonate compositions while minimizing molded-in stress. In still further embodiments, nanocomposites compositions are used to form the containers of the invention.
    Type: Application
    Filed: July 23, 2003
    Publication date: July 22, 2004
    Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
  • Patent number: 6740373
    Abstract: A method of making a texture-coated and/or insulation coated container from a flat paperboard blank in which a heat-hardenable liquid polymeric binder texturizing and or insulating agent coating mixture is applied to one surface of the blank in a pattern of covered and open areas. This coating mixture is subjected to heat to cure the polymeric binder and expand the texturizing and/or insulating agent, optionally treated with moisture, and optionally heated to form the blank into the shape of a container, and the container produced by this method. The containers such as cups, plates, etc., are useful in food service. These containers have a coefficient of static friction which is about 0.2 to 2.0 and over and a kinetic coefficient of friction which is about 0.22 to 1.5.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: May 25, 2004
    Assignee: Fort James Corporation
    Inventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
  • Publication number: 20040022977
    Abstract: An injection blow-molded disposable tumbler is formed from a polymeric material and includes a fortified upper rim having a thickness greater than the adjacent sidewall. The tumbler may be formed of a variety of resinous materials and exhibits improved toughness and crush resistance as well as aesthetic qualities particularly desired by consumers. In a particularly preferred embodiment, thick-walled polycarbonate tumblers are prepared from hydrolysis-stabilized polycarbonate compositions while minimizing molded-in stress. In still further embodiments, nanocomposites compositions are used to form the containers of the invention.
    Type: Application
    Filed: July 23, 2003
    Publication date: February 5, 2004
    Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
  • Patent number: 6627278
    Abstract: An injection blow-molded disposable tumbler is formed from a polymeric material and includes a fortified upper rim having a thickness greater than the adjacent sidewall. The tumbler may be formed of a variety of resinous materials and exhibits improved toughness and crush resistance as well as aesthetic qualities particularly desired by consumers. In a particularly preferred embodiment, thick-walled polycarbonate tumblers are prepared from hydrolysis-stabilized polycarbonate compositions while minimizing molded-in stress. In still further embodiments, nanocomposites compositions are used to form the containers of the invention.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: September 30, 2003
    Assignee: Fort James Corporation
    Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
  • Publication number: 20030152724
    Abstract: A method of making a texture-coated and/or insulation coated container from a flat paperboard blank in which a heat-hardenable liquid polymeric binder texturizing and/or insulating agent coating mixture is applied to one surface of the blank in a pattern of covered and open areas. This coating mixture is subjected to heat to cure the polymeric binder and expand the texturizing and/or insulating agent, optionally treated with moisture, and optionally heated to form the blank into the shape of a container, and the container produced by this method. The containers such as cups, plates, etc., are useful in food service. These containers have a coefficient of static friction which is about 0.2 to 2.0 and over and a kinetic coefficient of friction which is about 0.22 to 1.5.
    Type: Application
    Filed: September 6, 2002
    Publication date: August 14, 2003
    Applicant: Fort James Corporation
    Inventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
  • Publication number: 20030108695
    Abstract: A method of making a disposable tumbler includes: injection molding a polyethylene terephthalate resin in an annular mold cavity defined by an injection mold wall and a core to form a resinous parison on the core; separating the parison from the injection mold wall by moving the parison on the core away from the mold wall; moving the parison on the core into alignment with a blow-mold; and expanding the parison by directing a pressurized fluid to its interior such that the parison separates from the core and expands to the surface of the blow mold to form the tumbler, wherein the parison is radially expanded by a factor of at least about 2.6 at its base to form the tumbler. Typically, the parison is radially expanded at its base by a factor of from about 2.6 to about 3.25 to form the tumbler; whereas preferably the parison is expanded by a factor of from about 2.7 to about 2.9.
    Type: Application
    Filed: July 26, 2002
    Publication date: June 12, 2003
    Inventors: Michael A. Freek, Ottavio Di Minno, Dan Weissman, Erland R. Sandstrom, David H. Hollenberg
  • Patent number: 6270577
    Abstract: An apparatus for applying a high solids coating to a surface of a base product is provided. The apparatus includes a rotatable coating roll that opposes a feeding roll. The rolls combine to define a nip portion through which a base product is passed. A cleaning blade is disposed in contact with the coating roll and a calendar box is disposed adjacent the surface of the coating roll.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: August 7, 2001
    Assignee: Fort James Corporation
    Inventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
  • Patent number: 6113986
    Abstract: A method of applying a coating to a surface of a base product that includes providing a calender stack that includes a rotatable king roll and a feeding roll is provided. The king roll is opposed to the feeding roll to define a nip portion between the rolls. A cleaning blade is provided and placed in contact with the king roll and a calender box is provided and placed adjacent a surface of the king roll. A coating material is applied to the surface of the king roll utilizing the calender box. A base product is passed through the nip portion to apply the coating material to a surface of the base product to form the coating thereon.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: September 5, 2000
    Assignee: Fort James Company
    Inventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
  • Patent number: 5954624
    Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: September 21, 1999
    Assignee: Fort James Corporation
    Inventor: Erland R. Sandstrom
  • Patent number: 5938112
    Abstract: A container formed from a unitary paperboard blank having a substantially planer inner region, a sidewall region and a rim region formed about the periphery thereof is disclosed. The sidewall region includes a generally annular region flaring upwardly and outwardly from a periphery of the planer inner region and a first frusto-conical region adjoining the annular region with the frusto-conical region sloping outwardly and upwardly from the annular region. The rim region includes an outwardly flaring arcuate annular region adjoining an outer periphery of the first frusto-conical region, and a second frusto-conical region extending substantially tangentially from the arcuate annular region. During the fabrication of the paperboard material for forming the aforementioned container, the paperboard material is impregnated with a sizing adhesive equivalent to at least 6 pounds of starch per 3,000 ft.sup.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: August 17, 1999
    Assignee: Fort James Corporation
    Inventor: Erland R. Sandstrom
  • Patent number: 5876815
    Abstract: A laminate product having both improved grease, oil, wax and solvent repellency and improved glueability and printability properties. The laminate comprises a substrate, at least one layer of a fluorine containing polymer moiety on at least one surface of the substrate and at least one layer comprising a latex on the at least one layer of a fluorine containing polymer moiety layer. Preferably there are more than one fluorine containing polymer moiety layers. Preferably there are more than one layers comprising a latex. A container is constructed from the said laminate. A process for decreasing the contact angle of grease, oil, wax and solvent involving applying the layers to a substrate.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: March 2, 1999
    Assignee: James River Corporation of Virginia
    Inventors: Erland R. Sandstrom, Kenneth John Shanton, Timothy Paul Hartjes, Dean Patrick Swoboda
  • Patent number: 5868309
    Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: February 9, 1999
    Assignee: Fort James Corporation
    Inventors: Erland R. Sandstrom, Kenneth John Shanton, Timothy Paul Hartjes
  • Patent number: 5752646
    Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: May 19, 1998
    Assignee: James River Corporation Of Virginia
    Inventor: Erland R. Sandstrom