Patents Assigned to Viskase Corporation
  • Method and apparatus for packaging of shirred food casings and resulting article
    Patent number: 5391108
    Abstract: The bundling together of shirred food casing sticks is accomplished by loosely supporting the sticks in a desired stack configuration, drawing a stretch film from below the stack, folding the film over the top of the stack and taping the film to itself, and then pulling the film downwardly to tighten it about the stack and heat sealing across the bottom of the stack.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: February 21, 1995
    Assignee: Viskase Corporation
    Inventor: Raymond A. Feldt
  • Method for producing transferable modifier-containing film
    Patent number: 5382391
    Abstract: A method for producing an extruded film article such as a bag, which is a blend of a thermoplastic polymer such as ethylene vinyl acetate and an olefinic oxide polymer such as poly(ethylene oxide), with a modifier such as liquid smoke absorbed in the blend. The modifier is transferable from the film to a receiving surface such as a food body in fluid transfer relationship with the film.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: January 17, 1995
    Assignee: Viskase Corporation
    Inventors: Roger L. Juhl, Stanley Lustig, Donatas Tijunelis
  • EVOH oxygen barrier stretched multilayer film
    Patent number: 5382470
    Abstract: 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: Grant
    Filed: April 9, 1993
    Date of Patent: January 17, 1995
    Assignee: Viskase Corporation
    Inventor: Stephen J. Vicik
  • Package of shirred food casing and method
    Patent number: 5381643
    Abstract: The invention is a package including a bundle of shirred casing sticks disposed and held together by a container which completely encloses the bundle. The container is formed insitu about the bundle from a heat shrink film which stiffens on heat shrinking to provide a self-supporting container conforming in shape generally to the bundle shape. During heat shrinking, portions of the film are insulated to prevent welding of these portions so they provide flaps which open to permit removal or replacement of sticks.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: January 17, 1995
    Assignee: Viskase Corporation
    Inventors: Michael P. Kazaitis, Robert P. Graves, Jr., Joseph L. Monti
  • Package of shirred food casings
    Patent number: 5382190
    Abstract: A package or "caddie" of fifty (50) shirred tubular sticks of food casing is formed by stacking the sticks in seven rows one on another the lowermost row containing five side-by-side stack, each of the next four rows containing one stick more than the row below and each of the top two rows having one stick less than the row below. This forms a six sided caddie wherein all internal angles as formed by the sides of the stack are 120.degree. and the perimeter of the stack is formed by a continuous unbroken progression of side-by-side sticks. A stretch film disposed transversely about the stack bundles the sticks tightly together.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: January 17, 1995
    Assignee: Viskase Corporation
    Inventor: Robert P. Graves
  • Bone-in food packaging article and use field of the invention
    Patent number: 5376394
    Abstract: A method for shrink packaging bone-in food masses such as meat cuts is disclosed, A patch bag comprising a thin-walled heat shrinkable thermoplastic film bag and a thick-walled non-heat shrinkable thermoplastic film patch having its inner surface bonded to the bag outer surface is used. Both surfaces have high energy as the sole bonding means and the patch-bag bond strength increases during heat shrinking around the meat mass such that the bag portion adhered to the patch shrinks less than the rest of the bag.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: December 27, 1994
    Assignee: Viskase Corporation
    Inventors: Vincent J. Dudenhoeffer, Jeffrey M. Schuetz
  • Transferable modifier-containing film
    Patent number: 5374457
    Abstract: An extruded film article such as a bag comprises a blend of a thermoplastic polymer such as ethylene vinyl acetate and an olefinic oxide polymer such as poly (ethylene oxide), with a modifier such as liquid smoke absorbed in the blend. The modifier is transferable from the film to a receiving surface such as a food body in fluid transfer relationship with the film.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: December 20, 1994
    Assignee: Viskase Corporation
    Inventors: Roger L. Juhl, Stanley Lustig, Donatas Tijunelis
  • Cellulosic article containing an olefinic oxide polymer and method of manufacture
    Patent number: 5358765
    Abstract: A tubular cellulosic casing comprising cellulose or a cellulose derivative which has incorporated therewith a polyethylene oxide composition having a molecular weight of at least 70,000 and a method of manufacturing the same.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: October 25, 1994
    Assignee: Viskase Corporation
    Inventor: John Markulin
  • Package of shirred food casing and method
    Patent number: 5356007
    Abstract: A package of shirred food casing sticks Wherein the sticks are bundled together by a wrap disposed in tension transversely about the bundle and the opposite ends of the wrap are overlapped and releasably connected. The releasable connection attaches the outer surface of the underlying wrapper end to the inner surface of the overlying wrapper end and the overlying end having an outer margin which is free and loose from the connection to provide a means for grasping and pulling the overlying end free of the connector.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: October 18, 1994
    Assignee: Viskase Corporation
    Inventor: Raymond A. Feldt
  • Apparatus for making a food containing package with integral handle
    Patent number: 5354193
    Abstract: A food product package includes a bulky food product hermetically sealed in a bag of heat shrunk film. The package has an integral self-supporting handle which is formed from plies of the film and which extends out from an end of the package in a conventional handle shape. The handle is formed by causing a skirt portion of the bag to heat shrink about a rigid member positioned to maintain the skirt portion spaced from an end of the package during shrinking.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: October 11, 1994
    Assignee: Viskase Corporation
    Inventor: Vytautas Kupcikevicius
  • Amorphous nylon copolymer and copolyamide films and blends
    Patent number: 5344679
    Abstract: 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: Grant
    Filed: April 16, 1991
    Date of Patent: September 6, 1994
    Assignee: Viskase Corporation
    Inventor: Stephen J. Vicik
  • Heat shrinkable handle bag article
    Patent number: 5332094
    Abstract: A heat shrinkable bag having a slit cut through two plies of a skirt portion so that the skirt forms a handle upon heat shrinking. The slit is cold cut through both plies of the skirt for most of the slit length except the opposite ends of the slit are burnt through the skirt to weld the plies together at the slit ends.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: July 26, 1994
    Assignee: Viskase Corporation
    Inventors: Philip F. Cilia, Vytautas Kupcikevicius
  • Shirred fibrous casing article and method
    Patent number: 5328733
    Abstract: A shirred fibrous casing article containing about 20% to about 30% moisture by total casing weight and composed of shirred portions spliced together and retained in an overwrap wherein a flag which identifies the splice location between the shirred portions is extended radially through the overwrap.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: July 12, 1994
    Assignee: Viskase Corporation
    Inventor: Jeffery A. Oxley
  • Cooked food product package
    Patent number: 5328705
    Abstract: A meat product package including an enclosing film having an EVA-containing inside surface and an in situ aqueous medium-cooked meat product in adhering relation to the film inside surface as the meat contacting and adhering surface. Starch particles are preferably dispersed across the meat contacting surface which has been both irradiated and subjected to corona treatment. A method for corona treating a thermoplastic tube inside surface in which small particles within the flat tube separate opposite surfaces providing voids, and the electric discharge crosses the flat tube through the voids.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 12, 1994
    Assignee: Viskase Corporation
    Inventors: Darrell L. Wilhoit, Vincent J. Dudenhoeffer
  • Method for making a cooked food using shirred casing having an ethylenic polymer outer layer with an external non-oil based lubricant
    Patent number: 5304385
    Abstract: A shirred tubular thermoplastic casing article of an ethylene polymer film with a substantially mineral oil-free liquid lubricating coating on the outside surface of the casing, and in contact with the ethylene polymer film, with preferred coatings being polyhydric alcohols such as 1, 2 propylene glycol or glycerine in water, or an aqueous dispersion of lecithin, and a method of manufacturing the article and method for making a processed foodstuff using the article.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: April 19, 1994
    Assignee: Viskase Corporation
    Inventors: Darrel L. Wilhoit, Jeffery A. Oxley
  • Bone-in food packaging article
    Patent number: 5302402
    Abstract: An article for shrink packaging bone-in food masses such as meat cuts comprising a thin-walled heat shrinkable thermoplastic film bag and a thick-walled nonheat shrinkable thermoplastic film patch having its inner surface bonded to the bag outer surface. Both surfaces have high energy as the sole bonding means and the patch-bag bond strength increases during heat shrinking around the meat mass such that the bag portion adhered to the patch shrinks less than the rest of the bag.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: April 12, 1994
    Assignee: Viskase Corporation
    Inventors: Vincent J. Dudenhoeffer, Jeffrey M. Schuetz
  • Deodorized multilayer film with vinylidene chloride copolymer barrier
    Patent number: 5290613
    Abstract: 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: Grant
    Filed: July 29, 1992
    Date of Patent: March 1, 1994
    Assignee: Viskase Corporation
    Inventors: Jeffrey M. Shuetz, Stephen J. Vicik
  • Transferable modifier-containing film
    Patent number: 5288532
    Abstract: An extruded film article such as a bag comprises a blend of a thermoplastic polymer such as ethylene vinyl acetate and an olefinic oxide polymer such as poly (ethylene oxide), with a modifier such as liquid smoke absorbed in the blend. The modifier is transferable from the film to a receiving surface such as a food body in fluid transfer relationship with the film.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: February 22, 1994
    Assignee: Viskase Corporation
    Inventors: Roger L. Juhl, Stanley Lustig, Donatas Tijunelis
  • Food containing package with integral handle and method of making same
    Patent number: 5286503
    Abstract: A food product package includes a bulky food product hermetically sealed in a bag of heat shrunk film. The package has an integral self-supporting handle which is formed from plies of the film and which extends out from an end of the package in a conventional handle shape. The handle is formed by causing a skirt portion of the bag to heat shrink about a rigid member positioned to maintain the skirt portion spaced from an end of the package during shrinking.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: February 15, 1994
    Assignee: Viskase Corporation
    Inventor: Vytautas Kupcikevicius
  • Food containing package with integral handle
    Patent number: D345907
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: April 12, 1994
    Assignee: Viskase Corporation
    Inventor: Vytautas Kupcikevicius