Assignee: Curwood, Inc.

Location: Oshkosh, WI
No. of patents: 45

Number	Title	Issue Date
8147934	Easy-open packages formed from peelable thermoplastic laminates An easy-open package formed from a peelable thermoplastic laminate and adapted to peel open, whereby the manually tearing the package causes a removable strip to form thereby exposing a product enclosed therein. ...	04/03/2012
8119211	Bag-on-valve assembly The present invention is directed to a bag-on-valve assembly comprising a valve stem and a flexible bag which is affixed to the valve stem and encapsulates a portion of said valve stem therein. The bag comprises a sealable thermoplastic film which is free of foil an...	02/21/2012
8110259	Packaging articles, films and methods that promote or preserve the desirable color of meat Food packaging articles, food packaging films, and food packaging methods comprising a myoglobin blooming agent that promote or preserve the desirable appearance of food products are provided. The food contact layer of the packaging films comprises a myoglobin bloom...	02/07/2012
8053047	Packaging method that causes and maintains the preferred red color of fresh meat Heat shrinkable, oxygen barrier, packaging films, methods of packaging and packages are provided having a myoglobin blooming agent to provide, promote, enhance or maintain a desirable coloration on the surface of a myoglobin-containing meat product. ...	11/08/2011
8047368	Vacuum skin packaging laminate, package and process for using same The present invention is directed to vacuum skin packaging laminates. The laminates include a first film, a second film, an adhesive bonding the first film to the second film, and an adhesive-free interfacial section between the first and second films. The laminate ...	11/01/2011
8039070	Easy open bag and film for use in thermally processing food at elevated temperatures A heat-shrinkable film suitable for forming an easy opening cook-in bag is provided. The film comprises at least five layers, including an inner layer, an inner frangible layer, a barrier layer, an outer frangible layer, and an outer layer. The film is capable of be...	10/18/2011
8029893	Myoglobin blooming agent, films, packages and methods for packaging Non-shrink, forming and nonforming thermoplastic webs comprising a myoglobin blooming agent on a food contact surface are useful for packaging fresh meat and other products to fix a desirable color on the surface of the product. ...	10/04/2011
7993560	Process for introducing an additive into a polymer melt A process includes introducing a base polymer into an extruder, heating to a temperature sufficient to form a polymer melt, introducing a liquid such as water including an additive with mixing and subsequent vaporization and venting of the liquid to produce an extru...	08/09/2011
7927679	Easy-open reclosable films having an interior frangible interface and articles made therefrom The present invention relates to peelable resealable multilayer films which include at least a first polymer layer, a second polymer layer of pressure-sensitive adhesive in direct contact with and bonded to both the first and third layers. The bond formed between th...	04/19/2011
7867531	Myoglobin blooming agent containing shrink films, packages and methods for packaging Heat shrinkable, oxygen barrier, packaging films, methods of packaging and packages are provided having a myoglobin blooming agent to provide, promote, enhance or maintain a desirable coloration on the surface of a myoglobin-containing meat product. ...	01/11/2011
7841633	Package pick-off and delivery device A article-handling device includes a means of rotation, a vacuum conduit, and a first vacuum manifold, each rotatably mounted onto a stationary support shaft. The device further includes a second vacuum manifold affixed to the first vacuum manifold and a non-rotatab...	11/30/2010
7762047	Food article packaging apparatus and method Packaging apparatus and method for inserting food articles into a bag of comparable size. The apparatus has a conveyor that orients the product along a longitudinal axis and delivers the food article to a tray disposed below the conveyor so the product drops from th...	07/27/2010
7628391	Taped bag feeder A taped bag feeder having a housing with a bag guide positioned thereon, a drive mechanism, a first reel and second reel for supplying an assembly of imbricated taped bags to a packaging operation. The assembly of imbricated taped bags having a pair of tape strands ...	12/08/2009
7527839	Easy open heat-shrinkable packaging An easy opening heat-shrinkable bag adapted to be heat sealed to a closed condition to contain and protect a product disposed therein, whereby, at least one heat seal is peelable and readily openable by application of force. ...	05/05/2009
7504142	Packaging laminates and articles made therefrom Film laminates for packaging applications having at least two polymer layers which are formed together as a coextruded blown film such that the first polymer layer is a surface layer relative to the film and comprises a heat-sealable material having a melt index of ...	03/17/2009
7493742	Rotational control assembly in packaging machines The present invention provides an assembly for controlling the rotational movement of a die wheel in packaging machinery and includes a first component operationally interconnected to both the die wheel and camshaft, and a second component physically connected to bo...	02/24/2009
7422782	Peelable/resealable packaging film The present invention describes a multilayer film suitable for use in packaging applications comprising at least a polymeric first layer having a first surface and an opposing second surface wherein the polymeric first layer comprises a heat-sealable, water-insolubl...	09/09/2008
7279206	Packaging laminates and articles made therefrom Film laminates for packaging applications having at least two polymer layers which are formed together as a coextruded blown film such that the first polymer layer is a surface layer relative to the film and comprises a heat-sealable material having a melt index of ...	10/09/2007
7276269	Frangible heat-sealable films for cook-in applications and packages made thereof Coextruded easy-opening film structures having at least three layers for use as a packaging film or as a component thereof suitable for storing and/or cooking food items contained therein. The first film layer includes a material selected from the group consisting o...	10/02/2007
7201966	Packaging films containing coextruded polyester and nylon layers Multilayer coextruded thermoformable structures for packaging film applications. The multilayer structures having at least a first layer comprising polyethylene terephthalate, a second layer of a first adhesive comprising a blend of at least an acrylate-based resin ...	04/10/2007
7147930	Heat-shrinkable packaging films with improved sealing properties and articles made thereof A coextruded heat-shrinkable, biaxially-oriented multilayered packaging film comprising a first layer, a second polymer layer, a third polymer layer, and a fourth polymer layer wherein the first polymer layer comprises a first ethylene/α-olefin copolymer preferably...	12/12/2006
7029734	Packaging film, package and process for aseptic packaging A multilayer packaging film, package and process for aseptic packaging applications. The multilayer packaging film includes (a) an inner sealant layer comprising a olefin polymer having a Vicat Softening Point greater than 90° C.; (b) an oxygen barrier layer; and (...	04/18/2006
7017774	Tray with built in utensil The present invention is directed to a pre-formed food packaging article, and method of manufacturing the same, useful in the packaging of individual food portions comprising a planar member having an upper surface and a lower surface, said planar member having a de...	03/28/2006
6964816	Packaging films containing coextruded polyester and nylon layers Multilayer thermoformable structures for packaging film applications. The multilayer structures having at least a first layer of polyester, a second layer of a first adhesive and a third layer of a nylon blend formed into a flexible non-oriented film by coextrusion....	11/15/2005
6869686	Irradiated biaxially oriented film 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 α-olefin selected from the group consisting of ethylen...	03/22/2005
6861125	Thermoformable film lamination containing a flexible polyamide coextrusion A flexible packaging film construction which includes an outer layer of formable biaxially oriented polyester which is printed on one side and adhered to a flexible polyamide containing coextruded film. ...	03/01/2005
6861127	Thermoformable multi-layer film Thermoformable plastic films can be formed into bags, pouches, trays, etc. which are useful when packaging foodstuffs and other products. These films enjoy widespread use in the packaging of meat and other oxygen sensitive products due to the gas permeation barrier ...	03/01/2005
6815023	Puncture resistant polymeric films, blends and process A polymer blend and mono-and multilayer films made therefrom suitable for processing or packaging articles which have an improved combination of properties e.g. such as lower tear strength and higher puncture resistance, or higher puncture resistance at both room te...	11/09/2004
6777047	Ionomeric, puncture resistant, thermoplastic bag A bag combination of: (A) a heat shrinkable film bag having a layer comprising: (a) 45-85 wt. % of a C2 copolymer (55-98° C. m.p.) of C6 or C8; (b) 5-35 wt. % of a second C2 α-olefin copolymer (115-128° C. m.p.); and (c...	08/17/2004
6777046	Puncture resistant, high shrink films, blends, and process A polymer blend and mono-and multilayer films made therefrom having an improved combination of properties such as high shrinkage values and high puncture resistance wherein the blend has a first copolymer of ethylene and octene-1 having a copolymer melting point of ...	08/17/2004
6773820	Thermoplastic C2-α-olefin copolymer blends and films A polymer blend, and mono- and multilayer films made therefrom, having improved properties such as heat scaling or puncture resistance, wherein the blend has a first polymer of ethylene and at least one α-olefin having a polymer melting point between 55 to 75° C.;...	08/10/2004
6749910	Bag for bone-in meat packing A patch bag for, packaging bone-in meat cuts having a thin-walled heat shrinkable monolayer patch film adhered to a thin-walled heat shrinkable multilayer bag film wherein the adherence of one to the other is solely due to the surface energy of the films, the patch ...	06/15/2004
6709687	Anti-transfer film and package A generally transparent flexible packaging structure having an anti-transfer layer which, in a closed and sealed package, is at or close to an interior surface of the package. A contained food product in the package has a tendency to deposit a food product component...	03/23/2004
6511688	Cheese package, film, bag and process for packaging a CO2 respiring foodstuff A packaged article, especially a respiring foodstuff such as cheese which generates or releases gas during storage, and a permeable multilayer biaxially oriented film suitable for allowing escape of such gas while minimizing transfer of oxygen across the ...	01/28/2003
6291041	Heat resistant nylon multi-layer film A multi-layer heat resistant film laminate with good optical properties, extended shelflife, and memory characteristics and its method of manufacture, the laminate having the generalized structure of (outside) A/B/C/D/C/B/E (inside), where A is an outer m...	09/18/2001
6197909	Heat shrinkable C2C4C6 terpolymer film Biaxially stretched, heat shrinkable monolayer and multilayer films comprising very low density polyethylene terpolymers of monomers (a), (b) and (c), where (a) comprises ethylene, (b) comprises a C6 -C8 alpha-olefin and (c) comprise...	03/06/2001
6171627	Method for packaged bone-in cuts of meat Disclosed is a bag arrangement and packaging method for packaging bone-in cuts of meat using two bags to provide a double wall of film surrounding the cut of meat for bone puncture resistance. Both bags are bottom sealed bags formed of a heat shrink film,...	01/09/2001
6015235	Puncture-resistant barrier pouch A puncture resistant barrier pouch for the packaging of bone-in-meat and other products. The pouch includes a body portion having a chamber and an open end, and a neck portion that extends outwardly from the open end of the body portion. The neck portion ...	01/18/2000
5464969	Self-venting microwaveable package and method of manufacture A self-venting package adapted for microwave cooking having first and second package walls made from thermoplastic polymeric film where the second package wall is joined at a portion of its perimeter to the first package wall thus creating a product recei...	11/07/1995
5266411	Metallized polypropylene film and process for manufacture This invention relates to a metallized polypropylene film made from polypropylene/acid terpolymer blends and the process for the manufacture thereof. The acid terpolymer is composed of an ester monomer, an acid monomer and ethylene....	11/30/1993

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Assignee: Curwood, Inc.