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81. 发明专利

GB2340472B Bag and method for packaging bone-in cuts of meat 未知
公开(公告)号：GB2340472B
公开(公告)日：2003-02-19
申请号：GB9914668
申请日：1999-06-24
申请人： VISKASE CORP , CURWOOD INC
发明人： BERT ROGER DOUGLAS , SIWINSKI JOHN STEPHEN
IPC分类号： A23L13/00 , B65D75/28 , B65D30/08 , B65D81/20

82. 发明专利

BR0106850A 未知
公开(公告)号：BR0106850A
公开(公告)日：2002-07-23
申请号：BR0106850
申请日：2001-08-29
申请人： CURWOOD INC
发明人： IDLAS SCOTT ALLAN
IPC分类号： B32B7/12 , B32B27/32 , C08L23/08 , C08L23/14 , B32B27/08 , B65D65/40 , C08L23/16
摘要： A multi-layer packaging film is provided having at least four layers arranged in sequence comprising: (1) a heat-sealing first layer comprising at least 50% by weight of a copolymer of propene, and at least one alpha -olefin selected from the group consisting of ethylene, butene-1, methylpentene-1, hexene-1, octene-1, decene-1 and mixtures thereof, said copolymer having a propene content of at least 60 wt. %, a Tm between about 100 DEG C and about 145 DEG C, a Mw/Mn of between 1 and 5, and n-hexane extractables of less than 4 wt. %; (2) second and fourth layers each comprising (a) at least 10 wt. % of a first copolymer of ethylene and at least one C4-C8 alpha -olefin, said copolymer having a density of from 0.900 to 0.915 g/cm and a melt index of less than 2 dg/min., (b) at least 10 wt. % of a second copolymer of ethylene with from 4 to 18 wt. % of a vinyl ester, alkyl acrylate, acrylic or methacrylic acid, and (c) from 0 to 60 wt. % of a third copolymer of ethylene and at least one C3 - C8 alpha -olefin having a density less than 0.900 g/cm and a melting point less of between 65-98 DEG C.; and (3) a third layer comprising at least 80% by weight of at least one copolymer of vinylidene chloride with from 2-20 wt. % (based on said copolymer) of vinyl chloride or methyl acrylate.

83. 发明专利

CA2356089A1 IRRADIATED BIAXIALLY ORIENTED FILM 未知
公开(公告)号：CA2356089A1
公开(公告)日：2002-02-28
申请号：CA2356089
申请日：2001-08-28
申请人： CURWOOD INC
发明人： IDLAS SCOTT A
IPC分类号： B32B7/12 , B32B27/32 , C08L23/08 , C08L23/14 , B32B27/08 , B29C65/02 , B32B31/24 , B65D81/34 , B65D65/40
摘要： A multi-layer packaging film is provided having at least four layers arranged in sequence comprising: (1) a heat-sealing first layer comprising a t least 50% by weight of a copolymer of propene, and at least one .alpha.-olefin selected from the group consisting of ethylene, butene-1, methylpentene-1, hexene-1, octen e- 1, decene-1 and mixtures thereof, said copolymer having a propene content of at least 60 wt.%, a Tm between about 100ÀC and about 145ÀC, a Mw/Mn of between 1 and 5, and n-hexane extractables of less than 4 wt.%; (2) second and fourt h layers each comprising (a) at least 10 wt.% of a first copolymer of ethylene and at least one C4 - C8 .alpha.-olefin, said copolymer having a density of from 0.900 to 0.915 g/cm3 and a melt index of less than 2 dg/min., (b) at least 10 wt.% of a second copolymer of ethylene with from 4 to 18 wt.% of a vinyl ester, alkyl acrylat e, acrylic or methacrylic acid, and (c) from 0 to 60 wt.% of a third copolymer of ethylene and at least one C3 - C8 .alpha.-olefin having a density less than 0.900 g/cm3 and a melting point less of between 65-98ÀC.; and (3) a third layer comprisi ng at least 80% by weight of at least one copolymer of vinylidene chloride with fr om 2- 20 wt.% (based on said copolymer) of vinyl chloride or methyl acrylate.

84. 发明专利

AU2489001A Puncture resistant polymeric films blends and process 未知
公开(公告)号：AU2489001A
公开(公告)日：2001-08-09
申请号：AU2489001
申请日：2001-03-02
申请人： CURWOOD INC
IPC分类号： B29C55/02 , B29C55/28 , B32B27/08 , B32B27/32 , B65D81/34 , C08J5/18 , C08L23/04 , C08L23/06 , C08L23/08 , C08L33/04

85. 发明专利

AU6737794A Puncture resistant heat shrinkable film containing narrow molecular weight ethylene alpha olefin 未知
公开(公告)号：AU6737794A
公开(公告)日：1995-01-19
申请号：AU6737794
申请日：1994-07-08
申请人： CURWOOD INC
发明人： GEORGELOS PAUL NICK
IPC分类号： B29C55/12 , B29C61/06 , B29K23/00 , B29L7/00 , B29L9/00 , B32B27/32 , C08J5/18 , C08L23/00 , C08L23/08 , B32B27/08
摘要： A biaxially stretched film with very high heat shrink and puncture resistance properties, formed of low density ethylene alpha olefin copolymer having low melt index, low Mw/Mn, and melting point below about 102 DEG C.

86. 发明专利

CA1303955C CONTINUOUS MOTION PACKAGE FORMING MACHINE 未知
公开(公告)号：CA1303955C
公开(公告)日：1992-06-23
申请号：CA611267
申请日：1989-09-13
申请人： CURWOOD INC
发明人： BUCHKO RAYMOND G , HALGREN JOHN A
IPC分类号： B65B9/02 , B65B65/02
摘要： CONTINUOUS MOTION PACKAGE FORMING MACHINE A continuous motion packaging machine which forms packages from overlying webs advanced along a path at a constant speed. A tooling carriage traverses a repetitive path which includes an "on-line" increment during which the tooling carriage matches web movement and package operations are performed. The tooling carriage is driven by linkage including a power input shaft operated by varying speeds throughout each cycle to maintain carriage position relative to the webs. Two brushless servo motors are used. One drives the webs, the other drives the tooling carriage. A computer program compares relative motor positions at points throughout each cycle to a pre-established position pattern and adjusts motor controller output to maintain one motor position relative to the sensed position of the other motor.

87. 发明专利

AU8169291A VACUUM PACKAGING METHOD AND APPARATUS 未知
公开(公告)号：AU8169291A
公开(公告)日：1992-02-13
申请号：AU8169291
申请日：1991-08-07
申请人： CURWOOD INC
发明人： KUPCIKEVICIUS VYTAUTAS
IPC分类号： B65B31/02
摘要： Vacuum packaging method and apparatus for heat sealable bags in which a clamp is used to effect a temporary air-tight seal of an evacuated bag while the bag is transported through a region of atmospheric pressure to a heat sealer. After heat sealing to effect a permanent air-tight closure, the clamp is open and the bag removed.

88. 发明专利

AU4600289A IRRADIATED MULTILAYER FILM FOR PRIMAL MEAT PACKAGING 未知
公开(公告)号：AU4600289A
公开(公告)日：1990-04-05
申请号：AU4600289
申请日：1989-12-08
申请人： CURWOOD INC
发明人： LUSTIG STANLEY , SCHUETZ JEFFREY MICHAEL , VICIK STEPHEN JAMES
IPC分类号： B29C55/02 , B29C61/02 , B32B27/08 , B65B25/06 , B32B27/30 , B32B31/28

89. 发明专利

AU5312886A IRRADIATED MULTILAYER FILM FOR PRIMAL MEAT PACKAGING 未知
公开(公告)号：AU5312886A
公开(公告)日：1986-07-01
申请号：AU5312886
申请日：1985-12-02
申请人： CURWOOD INC
发明人： STANLEY LUSTIG , MICHAEL SCHUETZ JEFFREY , JAMES VICIK STEPHEN
IPC分类号： B29C55/02 , B29C61/02 , B32B27/08 , B65B25/06 , B32B27/30 , B32B31/28

90. 发明专利

CA1169217A FLEXIBLE WRAPPING MATERIAL AND METHOD OF MANUFACTURE 未知
公开(公告)号：CA1169217A
公开(公告)日：1984-06-19
申请号：CA425106
申请日：1983-03-31
申请人： CURWOOD INC
发明人： THEISEN HENRY J , GEHRKE WILLARD H
IPC分类号： B32B27/08 , B65D65/40
摘要： A flexible wrapping material comprising a film laminate i provided for packaging of food products which is resistant to flex-cracking and pinhole development, is impervious to liquids and gasses, and exhibits the property of grease-resistance without the use of adhesives to promote bonds between the layers. The film laminate consists of an outer layer of heat-set, biaxially oriented polymeric material followed by a layer of polymeric material, a layer of oxygen barrier polymer, a layer of biaxially oriented polypropylene, a special grease-resistant polymer, and an inner layer of heat-sealable polymeric material. The film laminate is made by bonding the Outer surface layer of heat-set, biaxially oriented polymer to a substrate in which an oxygen barrier material is carried on a biaxially oriented polypropylene/ special grease-resistant polymer by means of an intermediate layer of polymeric material. A layer of heat-sealable polymeric material is then extrusion-coated on the special polymer surface to form the inner layer of the laminate.

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