Patents by Inventor Stephen J. Vicik
Stephen J. Vicik 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: 7244481Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer of EVOH surrounded by an inner and outer adhesive layer, and a coextrusion process for making the film.Type: GrantFiled: May 10, 2002Date of Patent: July 17, 2007Assignee: Viskase Companies, Inc.Inventors: Stephen J. Vicik, Amy L. Glawe
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Publication number: 20030008084Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer of EVOH surrounded by an inner and outer adhesive layer, and a coextrusion process for making the film.Type: ApplicationFiled: May 10, 2002Publication date: January 9, 2003Inventors: Stephen J. Vicik, Amy L. Glawe
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Patent number: 5632843Abstract: A heat-shrinkable, multilayer film suitable for use in fabricating bags for packaging primal and sub-primal meat cuts and processed meats. The multilayer film has a first outer layer of a first ethylene-vinyl acetate copolymer, a core layer of a barrier film comprising a polyvinylidene chloride copolymer, and a second outer layer of a second ethylene-vinyl acetate copolymer. The multilayer film is preferably made by co-extrusion of the layers, and then it is biaxially stretched. After biaxial stretching, the multilayer film is irradiated to a dosage level of between 1 megarad and 5 megarads and heat-sealed in the form of a bag. The bag has improved toughness properties and heat-sealing characteristics.Type: GrantFiled: November 9, 1990Date of Patent: May 27, 1997Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 5549943Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more polyolefins such as VLDPE or EVA and a coextrusion process for making the film.Type: GrantFiled: September 23, 1992Date of Patent: August 27, 1996Assignee: Viskase CorporationInventor: Stephen J. Vicik
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Patent number: 5480945Abstract: Novel orientable single and multilayer thermoplastic flexible films utilizing blends comprising an amorphous nylon copolymer such as nylon 6I/6T and a nylon copolyamide having a melting point of at least about 145.degree. C. having improved processability, shrinkage and optical properties.Type: GrantFiled: June 30, 1994Date of Patent: January 2, 1996Assignee: Viskase CorporationInventor: Stephen J. Vicik
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Patent number: 5460861Abstract: This invention relates to an improved biaxially oriented heat shrinkable multilayer film, a hermetically sealed and evacuated trayed food package wherein the film is used as a stretched heat shrunk overwrap and a method for sealing and wrapping such packages.Type: GrantFiled: May 10, 1994Date of Patent: October 24, 1995Assignee: Viskase CorporationInventors: Stephen J. Vicik, Craig L. Sandford
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Patent number: 5439717Abstract: Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films are fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.Type: GrantFiled: October 25, 1993Date of Patent: August 8, 1995Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 5382470Abstract: A biaxially stretched oriented heat shrinkable film for food packaging comprising an EVOH-nylon 6,66 core layer, second and third intermediate adhesive layers, a self heat sealable fourth outer layer and an abuse-resistant fifth outer layer.Type: GrantFiled: April 9, 1993Date of Patent: January 17, 1995Assignee: Viskase CorporationInventor: Stephen J. Vicik
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Patent number: 5344679Abstract: Orientable single and multilayer thermoplastic flexible films utilizing blends comprising an amorphous nylon copolymer such as nylon 6I/6T and a nylon copolyamide having a melting point of at least about 145.degree. C. having improved processability, shrinkage and optical properties.Type: GrantFiled: April 16, 1991Date of Patent: September 6, 1994Assignee: Viskase CorporationInventor: Stephen J. Vicik
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Patent number: 5290613Abstract: In a multilayer thermoplastic film having a vinylidene chloride copolymer barrier and at least a polyolefin second layer laminated to the barrier layer wherein at least the barrier layer is irradiated, hydrotalcite is blended with the polyolefin and substantially reduces odor generation due to ionizing irradiation of the barrier layer.Type: GrantFiled: July 29, 1992Date of Patent: March 1, 1994Assignee: Viskase CorporationInventors: Jeffrey M. Shuetz, Stephen J. Vicik
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Patent number: 5256351Abstract: A method of manufacturing heat-shrinkable, puncture resistant, biaxially stretched thermoplastic films from very low density polyethylene (VLDPE). The film may be entirely VLDPE or it may be multilayer with an oxygen barrier core layer formed of material such as a polyvinylidene chloride copolymer or an ethylene vinyl alcohol copolymer, and two outer layers. One of these outer layers may for example be a blend of ethylene vinyl acetate (EVA) and VLDPE, and the other outer layer may be EVA. The film may be fabricated into bags suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. The bags have high shrink and improved toughness.Type: GrantFiled: October 21, 1991Date of Patent: October 26, 1993Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 5256428Abstract: Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films are fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.Type: GrantFiled: October 21, 1991Date of Patent: October 26, 1993Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 5077109Abstract: An oriented multilayer film comprising a barrier layer, a first layer on one side of said barrier layer and a second layer on the opposite side of said barrier layer is provided for use in food packaging applications. The first and second layers have melting points of at least about 115.degree. C. The barrier layer comprises amorphous nylon having a glass transition temperature greater than the higher of the two melting points or higher than the melting point of the first and second layers. The barrier layer is substantially impermeable to oxygen, while the first and second layers may comprise certain polyethylene resins. The oxygen barrier properties of the film do not deteriorate as the barrier layer gradually absorbs moisture. A process for making such multilayer films is also provided.Type: GrantFiled: March 26, 1990Date of Patent: December 31, 1991Assignee: Viskase CorporationInventors: Stanley Lustig, Stephen J. Vicik
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Patent number: 5059481Abstract: Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films are fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.Type: GrantFiled: March 28, 1990Date of Patent: October 22, 1991Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 5053259Abstract: Novel orientable single and multilayer thermoplastic flexible films utilizing blends comprising an amorphous nylon copolymer such as nylon 6I/6T and a nylon copolyamide having a melting point of at least about 145.degree. C. having improved processability, shrinkage and optical properties.Type: GrantFiled: August 23, 1988Date of Patent: October 1, 1991Assignee: Viskase CorporationInventor: Stephen J. Vicik
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Patent number: 4997690Abstract: A heat-shrinkable, multilayer film suitable for use in fabricating bags for packaging primal and sub-primal meat cuts and processed meats. The multilayer film has a first outer layer of a first ethylene-vinyl acetate copolymer, a core layer of a barrier film comprising a polyvinylidene chloride copolymer, and a second outer layer of a second ethylene-vinyl acetate copolymer. The multilayer film is preferably made by co-extrusion of the layers, and then it is biaxially stretched. After biaxial stretching, the multilayer film is irradiated to a dosage level of between 1 megarad and 5 megarads and heat-sealed in the form of a bag. The bag has improved toughness properties and heat-sealing characteristics.Type: GrantFiled: August 18, 1989Date of Patent: March 5, 1991Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 4976898Abstract: Method of manufacturing a heat shrinkable biaxially oriented thermoplastic film by extruding a primary tube including very low density polyethylene (VLDPE), heating the primary tube and biaxially stretching the heated primary tube using a double bubble method to form a tube which is heat shrinkable from about 30% to about 50% in at least one of the transverse and machine directions.Type: GrantFiled: July 25, 1989Date of Patent: December 11, 1990Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 4963419Abstract: A multilayer film is disclosed having improved heat sealing characteristics, comprising a first outer layer containing a heat sealable thermoplastic polymer having substantial freedom from cross-linking bonds, and a second layer containing a cross-linked ethylene polymer. In one embodiment the multilayer film is suitable for use in packaging primal and subprimal meat cuts, said film comprising a first outer layer containing a heat sealable thermoplastic polymer; a core layer comprising an oxygen barrier film; and a second outer layer comprising an ethylene polymer having siloxane cross-linking bonds. In another embodiment the multilayer film contains a second core layer containing an ethylene vinyl acetate copolymer, which is located between the barrier core layer and the second outer layer.Type: GrantFiled: May 13, 1987Date of Patent: October 16, 1990Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
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Patent number: 4911963Abstract: An oriented multilayer film comprising a barrier layer, a first layer on one side of said barrier layer and a second layer on the opposite side of said barrier layer is provided for use in food packaging applications. The first and second layers have melting points of at least about 115.degree. C. The barrier layer comprises amorphous nylon having a glass transition temperature greater than the higher of the two melting points or higher than the melting point of the first and second layers. The barrier layer is substantially impermeable to oxygen, while the first and second layers may comprise certain polyethylene resins. The oxygen barrier properties of the film do not deteriorate as the barrier layer gradually absorbs moisture. A process for making such multilayer films is also provided.Type: GrantFiled: August 31, 1987Date of Patent: March 27, 1990Assignee: Viskase CorporationInventors: Stanley Lustig, Stephen J. Vicik
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Patent number: 4892603Abstract: A heat-shrinkable, multilayer film suitable for use in fabricating bags for packaging primal and sub-primal meat cuts and processed meats. The multilayer film has a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film comprising vinylidene chloride-methyl acrylate copolymer, and a second outer layer of an ethylene-vinyl acetate copolymer. The multilayer film is preferably made by co-extrusion of the layers, and then it is biaxially stretched. After biaxial stretching, the multilayer film is irradiated to a dosage level of between 1 megarad and 5 megarads and heat-sealed in the form of a bag. The bag has improved storage stability characteristics.Type: GrantFiled: September 9, 1988Date of Patent: January 9, 1990Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik