US Patent No: 5,069,955

Number of patents in Portfolio can not be more than 2000

Film and blends of polyetheramide block copolymer and ethylene vinyl alcohol

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Abstract

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Ethylene vinyl alcohol copolymer is blended with polyetheramide block copolymer to form a novel composition of matter. The blended composition can be extruded and/or coextruded to make packaging films. In the most preferred embodiments, the blend is contained as one layer in a film comprising a multiplicity of layers, and at least the blend layer is molecularly oriented. Methods of making the films are also disclosed.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PECHINEY EMBALLAGE FLEXIBLE EUROPECHICAGO, IL191

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwanami, Teruo Ibaraki, JP 11 151
Schroeder, George O Waupaca, WI 8 286
Tse, Samuel W Dublin, CA 8 149

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PECHINEY EMBALLAGE FLEXIBLE EUROPE (2)
4,347,332 Polyamide/polyethylene copolymer film and method for producing 47 1981
4,717,618 Film and blends of polyetheramide block copolymer and ethylene vinyl alcohol copolymer 10 1985
 
TOYO SEIKAN KAISHA, LTD. (2)
4,500,677 Resin composition excellent in drawability 21 1983
4,562,118 Films, sheets, laminates and molded articles having gas barrier properties 39 1984
 
Allied Corporation (1)
4,427,825 Blends of polyamide and ethylene vinyl alcohol copolymers 32 1981
 
Mobil Oil Corporation (1)
4,464,438 Blends of polyvinyl alcohol and ethylene-vinyl alcohol copolymer as grease resistant melt extrudable films 32 1983
 
UNITIKA LTD. (1)
4,365,041 Resin composition comprising water-soluble polyamide and vinyl alcohol-based polymer 35 1981

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
CRYOVAC, INC. (2)
5,645,788 Making highly oriented multilayer film 4 1995
6,294,210 Oxygen permeable multilayer film 9 1997
 
ELF ATOCHEM S.A. (1)
5,166,309 Block polyetheramides 15 1992
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
5,342,717 Charging component for electrophotographic process containing a protective layer of conductive carbon black particles in polyether-ester-amide block copolymer 2 1993
 
SOLVAY INDUSTRIAL FOILS MANAGEMENT AND RESEARCH (1)
6,136,394 Tube comprising at least three layers 9 1998
 
VISKASE COMPANIES, INC. (1)
5,698,279 Heat shrinkable nylon food casing having a functionalized ethylenic polymer core layer 16 1992
 
VISKASE CORPORATION (1)
5,549,943 Heat shrinkable nylon food casing with a polyolefin core layer 20 1992

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