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).
-
Patent number: 4865780Abstract: 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 including a polyvinylidene chloride vinylchloride copolymer containing between about 70 weight percent and about 90 weight percent vinylidene chloride, 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 2 megarads and 3 megarads and heat-sealed in the form of a bag. The bag has improved toughness properties and heat-sealing characteristics and is not significantly discolored by the irradiation.Type: GrantFiled: February 5, 1988Date of Patent: September 12, 1989Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4863769Abstract: 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 for fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.Type: GrantFiled: April 24, 1987Date of Patent: September 5, 1989Assignee: Viskase CorporationInventors: Stanley Lustig, Nancy M. Mack, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4857408Abstract: An irradiated four layer meat-adherable heat shrinkable film comprising an ionomer first layer, a second layer of anhydride adhesive-EVOH blend, a third layer of EVOH-amide polymer blend, and a fourth layer of anhydride adhesive-EVOH blend.Type: GrantFiled: March 25, 1988Date of Patent: August 15, 1989Assignee: Viskase CorporationInventor: Stephen J. Vicik
-
Patent number: 4857399Abstract: A four layer shrink film comprising an ethylene-propylene random copolymer as a meat contact first layer, a blend of anhydride-modified ethylene copolymer adhesive and EVA as an inner core second layer, a blend of EVOH and amide polymer as a barrier third layer, and a blend of anhydride- modified ethylene copolymer adhesive and EVA as an abuse fourth layer.Type: GrantFiled: March 25, 1988Date of Patent: August 15, 1989Assignee: Viskase CorporationInventor: Stephen J. Vicik
-
Patent number: 4851290Abstract: An irradiated three layer thermoplastic film for holding hot-filled foods during the succeeding cold water tumble-chilling and further refrigerating steps, comprising a nylon 6.12 or nylon 6.66 core layer, and outer layers comprising a blend of 50-75% polyethylene or EVA, and 25-50% polyethylene-modified adhesive or EVA-modified adhesive.Type: GrantFiled: January 6, 1988Date of Patent: July 25, 1989Assignee: Viskase CorporationInventor: Stephen J. Vicik
-
Patent number: 4828891Abstract: A heat-shrinkable multilayer film suitable for use in fabricating bags for packaging primal and subprimal meat cuts. The multilayer film has a first outer layer of an ethylene-vinyl acetate copolymer, a first core layer of an oxygen barrier material, a second core layer of a polyurethane, and a second outer layer of a linear low density polyethylene. The multilayer film is preferably made by coextrusion of the layers, and then it is biaxially stretched. After biaxial stretching, the multilayer film is preferably irradiated to a dosage level of between 3 megarads and 8 megarads, and is then heat-sealed in the form of a bag. The bag has improved toughness properties.Type: GrantFiled: February 2, 1987Date of Patent: May 9, 1989Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4758463Abstract: An irradiated three layer heat-shrinkable plastic film for cook-in applications comprising a core layer of EVOH and Nylon blend as an oxygen barrier, and first and second outer layers each comprising a blend of EVA and ethylene vinyl acetate-anhydride functionality compound.Type: GrantFiled: December 29, 1986Date of Patent: July 19, 1988Assignee: Viskase CorporationInventors: Stephen J. Vicik, Gary A. Rejniak
-
Patent number: 4740400Abstract: A transparent heat shrinkable, multilayer film comprising:(a) at least one layer comprising a vinylidene chloride-vinyl chloride copolymer; and(b) at least one layer comprising a thermoplastic polymer; and(c) a sufficient amount of a dioxazine violet pigment to provide a film which retains an aesthetically acceptable violet appearance despite exposure to elevated temperatures and/or irradiation.Type: GrantFiled: March 27, 1986Date of Patent: April 26, 1988Assignee: Viskase CorporationInventors: Stanley Lustig, Stephen J. Vicik, John A. Ransford
-
Patent number: 4737391Abstract: 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 as previously described comprising a polyvinylidene chloride vinyl chloride copolymer containing between about 70 weight percent and about 90 weight percent vinylidene chloride, 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 2 megarads and 3 megarads and heat-sealed in the form of a bag. The bag has improved toughness properties and heat-sealing characteristics, and is not significantly discolored by the irradiation.Type: GrantFiled: April 24, 1987Date of Patent: April 12, 1988Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4734327Abstract: An irradiated three layer heat shrinkable plastic film comprising an EVOH - Nylon core layer as an oxygen barrier, a first outer layer comprising a blend of EVA and C6-C8 olefin type LLDPE, and a second outer layer comprising EVA.Type: GrantFiled: December 29, 1986Date of Patent: March 29, 1988Assignee: Viskase CorporationInventor: Stephen J. Vicik
-
Patent number: 4714638Abstract: 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: June 14, 1985Date of Patent: December 22, 1987Assignee: Viskase CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4675364Abstract: The melt index is reduced and the rheology is modified in ethylene-vinyl acetate copolymers used in the manufacture of films, by the addition of a crosslinking agent to the copolymer. This allows the use of more readily available raw materials and improves the stability of the bubble during stretching of tubular films.Type: GrantFiled: February 13, 1985Date of Patent: June 23, 1987Assignee: Viskase CorporationInventors: Theodore Churma, Elwood D. Latimer, Jr., Stephen J. Vicik
-
Patent number: 4547413Abstract: A heat-shrinkable film suitable for use in fabricating bags for packaging frozen poultry. The film composition comprises a resin mixture of between about 75 and about 95 weight percent of an ethylene-vinyl acetate copolymer having a vinyl acetate content of from at least about 1.7 to about 5.0 weight percent, and having a melt index of from at least about 0.15 to about 0.35 decigram per minute; and between about 5 and about 25 weight percent of a polyethylene material selected from the group consisting of: (a) high density polyethylene having a melt index of between about 0.15 and about 0.70 decigram per minute, and a density of between about 0.94 and about 0.96 grams per cubic centimeter, and (b) low pressure-low density polyethylene having a melt index of between about 0.3 and about 3.0 decigrams per minute, and a density of between about 0.915 and about 0.925 gram per cubic centimeter.Type: GrantFiled: June 27, 1984Date of Patent: October 15, 1985Assignee: Union Carbide CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4515745Abstract: The melt index is reduced and the rheology is modified in ethylene-vinyl acetate copolymers used in the manufacture of films, by the addition of a crosslinking agent to the copolymer. This allows the use of more readily available raw materials and improves the stability of the bubble during stretching of tubular films.Type: GrantFiled: May 18, 1983Date of Patent: May 7, 1985Assignee: Union Carbide CorporationInventors: Theodore Churma, Elwood D. Latimer, Jr., Stephen J. Vicik
-
Patent number: 4447480Abstract: A heat-shrinkable film suitable for use in fabricating bags for packaging frozen poultry. The film composition comprises a resin mixture of between about 80 and about 95 weight percent of an ethylene-vinyl acetate copolymer having a vinyl acetate content of from at least about 1.7 to about 4.5 weight percent, and having a melt index of from at least about 0.15 to about 0.35 decigram per minute; and between about 5 and about 20 weight percent of a polyethylene material selected from the group consisting of: (a) high density polyethylene having a melt index of between about 0.15 and about 0.70 decigram per minute, and a density of between about 0.94 and about 0.96 grams per cubic centimeter, and (b) low pressure low density polyethylene having a melt index of between about 0.3 and about 3.0 decigrams per minute, and a density of between about 0.915 and about 0.925 gram per cubic centimeter.Type: GrantFiled: December 1, 1982Date of Patent: May 8, 1984Assignee: Union Carbide CorporationInventors: Stanley Lustig, Jeffrey M. Schuetz, Stephen J. Vicik
-
Patent number: 4357376Abstract: A heat-shrinkable multilayer film suitable for use in the packaging of primal meat cuts wherein the first outer layer comprises a blend of ethylene-vinyl acetate copolymer, propylene-ethylene copolymer, and 1-butene-ethylene copolymer; a core layer comprising a vinylidene chloride-vinyl chloride copolymer; and a second outer layer comprising an ethylene-vinyl acetate copolymer.Type: GrantFiled: July 6, 1981Date of Patent: November 2, 1982Assignee: Union Carbide CorporationInventors: Bruce E. Nattinger, Stephen J. Vicik
-
Patent number: 4348437Abstract: A flexible biaxially stretched multilayer film including a layer having a thickness of at least about 0.5 mil and comprising a blend of a polyurethane polymer and an ethylene vinyl acetate copolymer, wherein the weight fraction of ethylene vinyl acetate copolymer in the blend does not exceed 0.40, the film having been subjected to a biaxial stretching in the range of from about 12 to about 20.Type: GrantFiled: June 10, 1981Date of Patent: September 7, 1982Assignee: Union Carbide CorporationInventors: Stanley Lustig, Stephen J. Vicik
-
Patent number: 4329388Abstract: A heat-shrinkable multilayer film suitable for use in the packaging of a frozen poultry, includes a first outer layer comprising a blend of a propylene-ethylene copolymer having a high isotactic molecular structure with less than about 6% by weight ethylene and having a melt flow of from about 1.5 to about 18 decigrams per minute; a (butene-1)-ethylene copolymer having a high isotactic molecular structure with less than about 10% by weight being ethylene and having a melt flow of from about 0.1 to about 5.Type: GrantFiled: August 27, 1979Date of Patent: May 11, 1982Assignee: Union Carbide CorporationInventors: Stephen J. Vicik, William J. Kohler, James O. Funderburk, Jr.
-
Patent number: 4296156Abstract: A flexible biaxially oriented multilayer film includes at least one layer having a thickness of at least about 0.5 mil and consisting essentially of an aromatic polyurethane, the film having been subjected to a biaxial stretching in the range of from about 12 to about 18, preferably about 16.Type: GrantFiled: December 26, 1979Date of Patent: October 20, 1981Assignee: Union Carbide CorporationInventors: Stanley Lustig, Stephen J. Vicik
-
Patent number: 4293664Abstract: A stretchable monolayer film adapted for packaging and cooling poultry, consists essentially of a blend of an ionomer and an elastomer.Type: GrantFiled: December 27, 1979Date of Patent: October 6, 1981Assignee: Union Carbide CorporationInventors: Stanley Lustig, Stephen J. Vicik