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).
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Patent number: 7955670Abstract: 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: GrantFiled: April 10, 2007Date of Patent: June 7, 2011Assignee: Dixie Consumer Products LLCInventors: Dean P. Swoboda, Kenneth J. Shanton, Erland R. Sandstrom
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Patent number: 6919111Abstract: 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: GrantFiled: September 6, 2002Date of Patent: July 19, 2005Assignee: Fort James CorporationInventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
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Patent number: 6866905Abstract: 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: GrantFiled: November 10, 1999Date of Patent: March 15, 2005Assignee: Fort James CorporationInventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
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Publication number: 20040226850Abstract: 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: ApplicationFiled: April 7, 2004Publication date: November 18, 2004Inventors: Janica S. Behnke, Timothy P. Hartjas, Mark B. Littlejohn, Joseph R. Pounder, Erland R. Sandstrom, Michael A. Schmeizer, Dean P. Swoboda, Rebecca E. Whitmore
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Publication number: 20040197500Abstract: 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: ApplicationFiled: September 6, 2002Publication date: October 7, 2004Applicant: Fort James CorporationInventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
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Publication number: 20040142132Abstract: 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: ApplicationFiled: July 23, 2003Publication date: July 22, 2004Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
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Patent number: 6740373Abstract: 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: GrantFiled: February 4, 1998Date of Patent: May 25, 2004Assignee: Fort James CorporationInventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
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Publication number: 20040022977Abstract: 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: ApplicationFiled: July 23, 2003Publication date: February 5, 2004Inventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
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Patent number: 6627278Abstract: 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: GrantFiled: May 26, 2000Date of Patent: September 30, 2003Assignee: Fort James CorporationInventors: Erland R. Sandstrom, Brigitte K. Weigert, Donald C. McCarthy, Michael G. Thomas, Michael A. Freek
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Publication number: 20030152724Abstract: 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: ApplicationFiled: September 6, 2002Publication date: August 14, 2003Applicant: Fort James CorporationInventors: Dean P. Swoboda, Anthony J. Swiontek, Timothy P. Hartjes, Kenneth J. Shanton, Erland R. Sandstrom
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Publication number: 20030108695Abstract: 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: ApplicationFiled: July 26, 2002Publication date: June 12, 2003Inventors: Michael A. Freek, Ottavio Di Minno, Dan Weissman, Erland R. Sandstrom, David H. Hollenberg
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Patent number: 6270577Abstract: 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: GrantFiled: November 19, 1999Date of Patent: August 7, 2001Assignee: Fort James CorporationInventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
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Patent number: 6113986Abstract: 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: GrantFiled: January 8, 1998Date of Patent: September 5, 2000Assignee: Fort James CompanyInventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
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Patent number: 5954624Abstract: 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: GrantFiled: July 14, 1997Date of Patent: September 21, 1999Assignee: Fort James CorporationInventor: Erland R. Sandstrom
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Patent number: 5938112Abstract: 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: GrantFiled: August 28, 1995Date of Patent: August 17, 1999Assignee: Fort James CorporationInventor: Erland R. Sandstrom
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Patent number: 5876815Abstract: 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: GrantFiled: January 25, 1996Date of Patent: March 2, 1999Assignee: James River Corporation of VirginiaInventors: Erland R. Sandstrom, Kenneth John Shanton, Timothy Paul Hartjes, Dean Patrick Swoboda
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Patent number: 5868309Abstract: 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: GrantFiled: July 26, 1996Date of Patent: February 9, 1999Assignee: Fort James CorporationInventors: Erland R. Sandstrom, Kenneth John Shanton, Timothy Paul Hartjes
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Patent number: 5752646Abstract: 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: GrantFiled: July 28, 1995Date of Patent: May 19, 1998Assignee: James River Corporation Of VirginiaInventor: Erland R. Sandstrom