Patents by Inventor John P. Eckstein

John P. Eckstein 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: 6645641
    Abstract: Copolymers of ethylene and alpha olefins that have been formed by the polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used to form collapsible dispensing containers and/or components thereof. Blends of the copolymers with propylene polymers are disclosed and used to form a body wall layer or a collapsible dispensing container head having good bond strength with a body wall layer formed of an ethylene polymer. Methods for improving the adhesion between collapsible dispensing container components, such as between body wall layer formed of an ethylene polymer and another body wall layer formed of a propylene polymer, or between a body wall layer formed of an ethylene polymer and a collapsible dispensing container head formed of a propylene polymer, are also disclosed.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: November 11, 2003
    Assignee: Pechiney Plastic Packaging, Inc.
    Inventors: John P. Eckstein, Johnny Q. Zheng, Mark E. Nordness, Keith D. Lind, George H. Walbrun, Gregory K. Jones, Gregory J. Seeke, Ronald J. Dembowski, Douglas J. Jackson
  • Publication number: 20030027008
    Abstract: Copolymers of ethylene and alpha olefins that have been formed by the polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used to form collapsible dispensing containers and/or components thereof. Blends of the copolymers with propylene polymers are disclosed and used to form a body wall layer or a collapsible dispensing container head having good bond strength with a body wall layer formed of an ethylene polymer. Methods for improving the adhesion between collapsible dispensing container components, such as between body wall layer formed of an ethylene polymer and another body wall layer formed of a propylene polymer, or between a body wall layer formed of an ethylene polymer and a collapsible dispensing container head formed of a propylene polymer, are also disclosed.
    Type: Application
    Filed: May 2, 2002
    Publication date: February 6, 2003
    Applicant: Pechiney Plastic Packaging, Inc.
    Inventors: John P. Eckstein, Johnny Q. Zheng, Mark E. Nordness, Keith D. Lind, George H. Walbrun, Gregory K. Jones, Gregory J. Seeke, Ronald J. Dembowski, Douglas J. Jackson
  • Patent number: 6511568
    Abstract: Copolymers of ethylene and alpha olefins that have been formed by the polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used to form collapsible dispensing containers and/or components thereof. Blends of the copolymers with propylene polymers are disclosed and used to form a body wall layer or a collapsible dispensing container head having good bond strength with a body wall layer formed of an ethylene polymer. Methods for improving the adhesion between collapsible dispensing container components, such as between body wall layer formed of an ethylene polymer and another body wall layer formed of a propylene polymer, or between a body wall layer formed of an ethylene polymer and a collapsible dispensing container head formed of a propylene polymer, are also disclosed.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: January 28, 2003
    Assignee: Pechiney Plastic Packaging, Inc.
    Inventors: John P. Eckstein, Johnny Q. Zheng, Mark E. Nordness, Keith D. Lind, George H. Walbrun, Gregory K. Jones, Gregory J. Seeke, Ronald J. Dembowski, Douglas J. Jackson
  • Patent number: 6437064
    Abstract: Copolymers of ethylene and alpha olefins that have been formed by a polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used as a film or as a layer in multiple layer films, including molecularly oriented and irradiated heat shrinkable films. Novel blends of the copolymers with other polymeric materials are disclosed and used as a film or a layer in a film particularly in molecularly oriented and heat shrinkable films. Bags made from the multiple layer films are especially useful for shrink packaging primal cuts of meat. Processes for the formation of flexible films and packages made therefrom are also disclosed.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 20, 2002
    Assignee: Pechiney Emballage Flexible Europe
    Inventors: John P. Eckstein, Johnny Q. Zheng, Mark E. Nordness, Keith D. Lind, George H. Walburn, Mary E. Shepard, Gregory K. Jones, Gregory J. Seeke
  • Patent number: 6270867
    Abstract: Copolymers of ethylene and alpha olefins that have been formed by the polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used to form collapsible dispensing containers and/or components thereof. Blends of the copolymers with propylene polymers are disclosed and used to form a body wall layer or a collapsible dispensing container head having good bond strength with a body wall layer formed of an ethylene polymer. Methods for improving the adhesion between collapsible dispensing container components, such as between body wall layer formed of an ethylene polymer and another body wall layer formed of a propylene polymer, or between a body wall layer formed of an ethylene polymer and a collapsible dispensing container head formed of a propylene polymer, are also disclosed.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: August 7, 2001
    Assignee: Pechiney Plastic Packaging, Inc.
    Inventors: John P. Eckstein, Johnny Q. Zheng, Mark E. Nordness, Ronald J. Dembowski, Douglas J. Jackson
  • Patent number: 5705111
    Abstract: Methods related to coextrusion of heat-sensitive polymer materials. The sensitive melt stream element (12) is encapsulated in a second polymeric melt stream element (16). Transport means (36) is preferably employed between the encapsulating means (20) and the die (42). A third melt stream element (68) is joined to one or both opposing surfaces (70) of the second melt stream element (16) between the encapsulating means (20) and the die (42). In the die (42) the encapsulated melt stream element (12) becomes an interior layer (46) between encapsulating layers (48A, 48B) derived from the second melt stream element (16). The third melt stream element (68) forms layers (72, 74) positioned outwardly of the encapsulating layers (48A, 48B). The positioning, on the interior of the extrudate, of edges (54) of layer (46) is adjusted independently of the combined thicknesses of a layer derived from the third melt stream element (68) and an adjacent layer (48).
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: January 6, 1998
    Assignee: American National Can Company
    Inventors: Robert John Blemberg, John P. Eckstein, Kevin J. Curie
  • Patent number: 5424347
    Abstract: Disclosed and claimed are formulations of polyvinylidene chloride, methyl acrylate and substantially no ethylene vinyl acetate which have high gas, especially oxygen, barrier properties and which maintain said high gas, especially oxygen, barrier properties after retorting; films and film-packages such as pouches from such formulations; and, methods of preparing foods employing such film-packages.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: June 13, 1995
    Assignee: American National Can Company
    Inventors: Robert J. Blemberg, John P. Eckstein, Mark E. Nordness
  • Patent number: 5236642
    Abstract: Method, apparatus, and films, related to coextrusion of heat-sensitive polymer materials. The sensitive melt stream element (12) is encapsulated in a second polymeric melt stream element (16). Transport means (36) is preferably employed between the encapsulating means (20) and the die (42). A third melt stream element (68) is joined to one or both opposing surfaces (70) of the second melt stream element (16) between the encapsulating means (20) and the die (42). In the die (42) the encapsulated melt stream element (12) becomes an interior layer (46) between encapsulating layers (48A, 48B) derived from the second melt stream element (16). The third melt stream element (68) forms layers (72, 74) positioned outwardly of the encapsulating layers (48A, 48B). The positioning, on the interior of the extrudate, of edges (54) of layer (46) is adjusterd independently of the combined thicknesses of a layer derived from the third melt stream element (68) and an adjacent layer (48).
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: August 17, 1993
    Assignee: American National Can Company
    Inventors: Robert J. Blemberg, John P. Eckstein, Kevin J. Curie
  • Patent number: 5143677
    Abstract: Apparatus and method for fabricating films and packages, especially films and packages containing a layer of vinylidene chloride copolymer. The preferred apparatus includes a coextrusion feedblock (20) in combination with an annular extrusion die (10) having an internal crosshead mandrel (11), and intervening spacing means for conveying the melt stream (24) from the feedblock to the die. The mandrel (11) has a cross-head groove (14), whose preferred design resembles elements of a rectangle. The inner surface of the outer die wall (19) preferably has an offset portion, including one of a pair of ramps (33A, 33B) traversed by the melt stream (24) as it leaves the groove. The die (10) maintains the melt stream in a single basic shape as the melt stream traverses the die. The VDC copolymer is shielded from the equipment surfaces beyond the VDC copolymer extruder. Equipment surfaces beyond the VDC copolymer extruder are protected from the VDC copolymer.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: September 1, 1992
    Assignee: American National Can Company
    Inventors: Robert J. Blemberg, John P. Eckstein, Mark E. Nordness
  • Patent number: 5108844
    Abstract: Blends having improved adhesion to each other when coextruded into multilayer films, such films, film-packages such as pouches from such films, and methods for making and using the films and film-packages are disclosed and claimed. Improved adhesion between layers results from adjusting the components of the blends of the layers. In addition, improved adhesion between layers results from reducing the temperature of the chill roll in the cast coextrusion process.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: April 28, 1992
    Assignee: American National Can Company
    Inventors: Robert J. Blemberg, John P. Eckstein, Mark E. Nordness
  • Patent number: 5106562
    Abstract: Methods and apparatus for reducing the impact of a higher temperature polymeric melt stream element on a lower temperature polymeric melt stream element, and vice versa. The methods include: supercooling the hotter melt stream element, exposing one or more melt stream elements to an undesirable thermal condition for a limited period of time, and/or using one or more layers as a heat sink. The apparatus is provided by a modified die in which one of the melt stream elements having the disparate temperatures traverses the die in a foreshortened path in the direction of extrusion of the extrudate.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: April 21, 1992
    Assignee: American National Can Company
    Inventors: Robert J. Blemberg, John P. Eckstein
  • Patent number: 5089308
    Abstract: Vinylidene chloride methyl acrylate copolymer coextruded with second and third different polymeric compositions in fabrication of multiple layer films. The third layer is between the first and second layers. The second composition can have a melting temperature greater than 204.degree. C., and can be, for example, polyester, polyamide, or polycarbonate. Preferred films contain at least five layers, at least one of which has a typical extrusion processing temperature higher than the typical extrusion processing temperature of the VDC-MA. Methods of fabricating such films are also disclosed.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: February 18, 1992
    Assignee: American National Can Company
    Inventors: Mark E. Nordness, Frank T. Bauer, Robert J. Blemberg, John P. Eckstein, David M. Banik, Grant A. Gustafson
  • Patent number: 4750642
    Abstract: A collapsible dispensing tube has a multi-layer sheet material sealed over its dispensing orifice to provide a hermetically sealed tube. The multi-layer sealant sheet comprises two layers of metal foil separated by a polymer layer firmly adhered to the metal foil layers. A polymeric layer is adhered to the outer surface of one of the metal foil layers and serves to seal the tube orifice. The laminated sheet may be sealed across the orifice by the application of radio-frequency energy.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: June 14, 1988
    Assignee: American National Can Company
    Inventors: John P. Eckstein, William S. Gillespie, Suzanne E. Schaefer
  • Patent number: 4685591
    Abstract: The invention is in an improved packaging tube and the packages, containing product, made therefrom. The packaging is suitable for holding products containing substantial fractions of cyanoacrylate-type components. The invention depends on the use of special multiple layer sheet material for the tube sidewall and a covering strip over the inside surface of the tube longtitudinal sideseam. A layer of high density polyethylene is positioned on the inside surface of the tube, such that it is the surface in direct contact with the product. A primer layer having a Lewis base-type component, such as polyethylene imine, is between the surface of the high density polyethylene layer which is disposed away from the product and subsequent layers which may be susceptible to interaction with the product.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: August 11, 1987
    Assignee: American Can Company
    Inventors: Suzanne E. Schaefer, John P. Eckstein
  • Patent number: 4595434
    Abstract: A collapsible dispensing tube has a multi-layer sheet material sealed over its dispensing orifice to provide a hermetically sealed tube. The multi-layer sealant sheet comprises two layers of metal foil separated by a polymer layer firmly adhered to the metal foil layers. A polymeric layer is adhered to the outer surface of one of the metal foil layers and serves to seal the tube orifice. The laminated sheet may be sealed across the orifice by the application of radio-frequency energy.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: June 17, 1986
    Assignee: American Can Company
    Inventors: John P. Eckstein, William S. Gillespie, Suzanne E. Schaefer
  • Patent number: 4551371
    Abstract: A multiple layer polymeric-based sheet structure is suitable for forming dispensing tubes. The abuse resistance of the tube is improved by incorporating in the sheet structure a layer of oriented polypropylene. A layer of linear low density polyethylene provides for heat sealing and has substantially improved stress crack resistance and resistance to generation of polydust.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: November 5, 1985
    Assignee: American Can Company
    Inventor: John P. Eckstein
  • Patent number: 4418841
    Abstract: A multiple layer polymeric-based sheet structure is suitable for forming dispensing tubes. The abuse resistance of the tube is improved by incorporating in the sheet structure a layer of oriented polypropylene.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: December 6, 1983
    Assignee: American Can Company
    Inventor: John P. Eckstein