Abstract: A laminate comprising two or more films, at least one of the films being a coextruded, multilayer film, wherein the laminate delaminates within the coextruded, multilayer film when the laminate is subjected to a peel force ranging from 0.001 to 2.5 pounds per inch. The laminate advantageously provides the lid for a package and delaminates into a substantially gas-impermeable portion and a gas-permeable portion, with the gas-permeable portion being bonded directly to a product support member of the package. In this manner, the gas-impermeable portion may be peelably removed from the package to allow atmospheric oxygen to enter the interior of the package.

Abstract: A package which allows for butchering and packaging of a fresh red meat product at a centralized facility is provided. The package includes a support member which contains the product; a first, preferably permeable film sealed to the support member for enclosing the product; a second, preferably impermeable film enclosing the first film and removably secured to the package; and labeling means including a label removably affixed to an outer surface of the support member. Upon removal of the second film, the label may be removed from the outer surface of the support member and adhered to the first film, thereby providing a package labeled with individualized information relating to the particular product.

Abstract: The present invention embraces a fruit pulp extraction process that avoids the concentration or freezing of the pulp, together with the packaging method that allows the processor to offer fresh and natural tasting fruit pulps to be consumed at any moment by only adding water and thus obtaining instantly a naturally fresh tasting fruit juice. The invention also includes the product obtained through this process-packaging combination.

Abstract: A composite film and vacuum skin package for packaging a product such as a fresh red meat is disclosed. The composite film is thermoformed and sealed under vacuum to a support member to completely enclose a product which is positioned on the support member. The composite film is a gas-permeable film weakly bonded to a gas-impermeable film, permitting the gas-impermeable film to be peeled from the package while leaving the gas-permeable film intact so that the fresh red meat product can bloom from a purplish color to a desirable red color upon exposure to oxygen. A peel initiation mechanism which is a grippable film sealed along an edge of the gas-impermeable film is provided.

Abstract: A modified flexible package includes a front elastomeric wall and a rear elastomeric wall. The front wall and the rear wall are sealed together at a top seal at a top end of the side walls. The top seal is formed by applying heat and/or pressure for a given dwell period, and is preferably a de-laminating seal. A first zipper part is attached to an inside surface of the front wall and has a first engagement member facing the rear wall. A second zipper part is attached to an inside surface of the rear wall and has a second engagement member facing the front wall. The first and second engagement members are engaged together. Both the top seal and the zipper engagement members are "pinch-grip opened" under a pinch-grip pulling force applied to the front and rear walls below the zipper. The front and rear walls have a strength sufficient to resist tearing and deformation under the application of the pinch-grip pulling force during pinch-grip opening.

Abstract: A method for heat preservation of a container filled with material is accomplished by means of heating and a pressure which is maintained during the holding time of the preservation process. The container of a material of laminate type is, after the holding time of the heat preservation, subjected to a supporting pressure during the cooling time of the process. A container intended to contain goods for heat preservation by means of heating and pressure comprises a base layer (1), an inner layer (3), and a barrier layer (4) between the base layer and the inner layer, and at least one layer consists of a plastic with memory.

Abstract: A cook-in package for food products is provided having a printed label layer positioned within at least one wall portion of the cook-in package. The printed cook-in package serves dual purposes and eliminates the need for a second printed shrink bag. Moreover, the printed package is capable of being formed and cooked, while still retaining it readable qualities and being resistant to abuse and some distortion.

Abstract: The present invention relates to sterilisation-resistant barrier films based on polyamides and polyolefins, wherein the film consists ofat least one aliphatic polyamide layer (A) andat least one polymer blend layer (B), which consists of 50-85 wt. % of polyarylamide and 15-85 wt. % of aliphatic polyamide andat least one thermoplastic heat sealing layer (C) of a polyolefin having a crystallite melting point of 121.degree. C. or above (C1) or of a polymer blend containing at least one polyolefin having a crystallite melting point of 121.degree. C. or above (C2) andat least one bonding layer (D),arranged in such a manner that a heat sealing layer and a layer of aliphatic polyamide are located on the outer sides of the film, and wherein the film is not stretched.

Abstract: A laminate comprising two or more films, at least one of the films being a coextruded, multilayer film, wherein the laminate delaminates within the coextruded, multilayer film when the laminate is subjected to a peel force ranging from 0.001 to 2.5 pounds per inch. The laminate advantageously provides the lid for a package and delaminates into a substantially gas-impermeable portion and a gas-permeable portion, with the gas-permeable portion being bonded directly to a product support member of the package. In this manner, the gas-impermeable portion may be peelably removed from the package to allow atmospheric oxygen to enter the interior of the package.

Abstract: A case-ready package and method of reducing discoloration in meat or poultry products enclosed within such packages when the packages are disposed in a stack of two or more packages. A non-textured and substantially smooth gas-permeable substrate is attached to the lower surface of the packages to allow air to flow into an underlying package in a stack of packages, thereby preventing or minimizing premature discoloration of packaged fresh meat or poultry product due to insufficient oxygen flow into such packages when disposed in a stack. In addition, the substrate may contain printed product indicia either directly or in the form of a label attached thereto.

Abstract: Dual state packaging may be implemented with a tray having a peripheral flange adapted to receive a pair of membranes to enclose the tray. The lower membrane is the more permeable of the two. It may be attached to a first surface of the flange. The second membrane is attached to a second outer surface of the flange without direct connection except through the tray to the more permeable membrane. The two connection surfaces may be separated by a depression to facilitate the cutting away of the material forming the more permeable membrane in a continuous manufacturing process. With the less permeable membrane in place, a desired gaseous environment may be maintained within the package. When it is desired to change the gaseous environment, the upper less permeable membrane may be peeled away allowing gaseous communication through the lower more permeable membrane.

Abstract: A polymeric film and method for overcoming the problem of "pinholes" created in filled pouches by the harmonic motion occurring during transport of the filled pouches. The polymeric film composed of from about 5% to about 95% by weight of a first polymeric material having an elongation at break of more than about 500% in the machine direction and more than about 600% in the transverse direction, and from 5% by weight to about 95% by weight of a second polymeric material having a density of at least about 0.915 g/cm.sup.3 and selected from the group consisting of polyethylene and ethylene copolymers. The first polymeric material includes a very low density linear ethylene interpolymerized from ethylene and at least one alpha-olefin in the range of C.sub.3 -C.sub.10. The film may be fabricated into pouches and the pouches stacked for transportation.

Abstract: A multi-ply laminated wall structure, especially for a bag for popping popcorn in a microwave oven, has at least two plies of paper secured together with spaced patches of adhesive to form a unitary laminated structure that has greater flexibility and lower cost than a conventional bag wall. The adhesive covers from about 25% up to about 60% of the confronting area between the plies, and the unsecured areas between the patches of adhesive are in communication with one another. The outer ply is gas permeable so that gas is permitted to escape from between the plies, and any moisture between the plies escapes through the unsecured areas between the patches of adhesive at the ends of the laminated structure.

Abstract: The invention relates to a packaging made up of at least one inner, containing an alcoholic or nonalcoholic beverage based on anethole, in which the inner foil of said packaging is made up of a film of polyamide including aromatic units.The packaging is preferably intended to contain weakly alcoholic beverages and the polyamide results from the polycondensation of meta-xylylenediamine with adipic acid.

Abstract: This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1 and exhibits resistance to blocking when stacked under a load at ambient conditions of 0.5 lbs/sq. in or greater.

Abstract: A rolled food item (110) is formed by rolling a strip of food (14) supported on support material (16) around the cut leading edge into a roll having multiple rotations with the strip of support material (16) located on the outside of the roll. A label (68) is attached to the support material (16) and extends over the trailing edge of the support material (16). Adhesive (120) is applied as a solid layer over the entire inside surface (112) of the label (68). Masking (122, 124, 130) is applied over the adhesive (120) which interferes with the adhesive properties of the adhesive (120).

Abstract: A package for shingled food slices (e.g., sliced bacon), including:a. a substantially flat support member supporting thereon a group of shingled food slices;b. a flexible film enclosing the food slices on the support member, the film being sealed to the support member outside the periphery of the food slices and substantially conforming to the shape of the food slices; andc. one or more printed images on at least one of the support member and the flexible film.

Abstract: The retortable multilayer container of the present invention includes a receptacle and lid having at least a barrier layer includes an LCP film and inner food contact layer comprising at least one thermoplastic material. The receptacle has a base portion and a sidewall portion extending from the base portion defining a storage compartment. The storage compartment has a filling volume from about 0.03 to about 20 liters. The receptacle may be in the form of a tray, cup, bowl, tub or bucket. The tray may be designed as a simple tray or a multi-compartment tray. The receptacle may further have a lip portion extending from the sidewall portion providing an area for the lid to rest.

Abstract: A packaged product has a film configured around a cooked meat product. The cooked meat product is adhered to a meat-contact surface of the film. The meat-contact surface of the film comprises an olefin/acrylic acid copolymer having a Vicat softening point, in .degree.F., of at least 232 minus 5 multiplied by the weight percent of acrylic acid mer in the olefin/acrylic acid copolymer. The cooked meat product comprises at least one member selected from the group consisting of sausage, bologna, mortadella, braunschweiger, and high-wateradded added ham. The olefin/acrylic acid copolymer has been found to adhere well to high fat/low protein meat products is orientable for the formation of heat-shrinkable films, and provides a stronger seal than previously available olefin/acrylic acid copolymers.

Abstract: Heat sealable films for packaging food products, particularly in applications where the packaged food product is heated at high temperatures in a hot water bath. The films have a sealant layer containing an acid copolymer. The acid copolymer has a high degree of ethylene crystallinity and therefore an unusually high melting temperature. The sealant layer provides excellent seal strength and excellent adhesion to meat, particularly poultry, even during hot water immersion.

Abstract: A method of salting a cheese in a water-impermeable packing, where the desired amount of salt is applied on one or more of the outer surfaces of the cheese and/or in the used packing material, whereafter a water-impermeable packing is provided by means of said packing material, said packing surround the cheese and the salt. The method renders it possible to avoid the complicated and cost-intensive brining in brine and to control the content of salt to an optimal degree.

Abstract: Process and apparatus for packaging beverages such as fruit juice provides plastic pouches filled with juice and sealed to form containers that are shelf stable for extended periods. The process involves limited heating, holding and cooling times for the juice. Preferred film for the pouches includes a multilayer construction having a barrier core and heat sealable outer layers.

Abstract: The present invention provides a freezer bag comprising a multibag having at least an inner liner bag and an outer support bag, the inner liner bag having a first sidewall and a second sidewall attached together along respective lateral edges forming edge seals, each sidewall having a top edge, and the liner bag having a folded edge defining the bottom of the liner bag, the outer support bag having two sidewalls attached together along respective lateral edges forming edge seals, each sidewall having top edges defining the opening to the multibag, and the support bag having a folded edge defining the bottom of the multibag, the top edges of the liner bag being attached to an inner surface of each respective sidewall of the support bag wherein the liner is thermoplastic and has a thickness of less than 2.0 mil (50.8 micron).

Abstract: A packing paper for baker's yeast, which is constituted by laminating, on one side of a base paper, at least a printing layer and a wax layer in this order and which has a carbon dioxide permeability of 400-2,000 cm.sup.3 /m.sup.2 .multidot.24 h.multidot.atm., an oxygen permeability of 100-600 cm.sup.3 /m.sup.2 .multidot.24 h.multidot.atm. and a moisture permeability of 50 g/m.sup.2 .multidot.24 h or less.

Abstract: The invention provides a film, a package and methods for employing the same. The film has a first layer of an elastomer and a second layer of a polyethylene such as a single site catalyst polyethylene. The film can have a third layer of a polyethylene such that the second layer is disposed between the first and third layers. The polyethylene of the third layer also can be single site catalyst polyethylene and, the elastomer of the first layer can be styrene butadiene copolymer. The film has an oxygen transmission rate of up to about 1000, such as 150-450 cc/100 in.sup.2 /24 hr., typically 260-400 cc/100 in.sup.2 /24 hr., with values of 300, 350-360, 400 cc/100 in.sup.2 /24 hr. and even higher exhibited by the film. The film is suitable for packages, for instance, packaging for cole slaw and leafy salad. The film also exhibits excellent clarity, durability, seal strength and machinability.

Abstract: A composite film and vacuum skin package for packaging a product such as a fresh red meat is disclosed. The composite film is thermoformed and sealed under vacuum to a support member to completely enclose a product which is positioned on the support member. The composite film is a permeable film weakly bonded to an impermeable film, permitting the impermeable film to be peeled from the package while leaving the permeable film intact so that the fresh red meat product can bloom from a purplish color to a desirable red color upon exposure to oxygen. The permeable and impermeable films are fully peelable without the need for a migratable wax to enhance peelability.

Abstract: A package that provides for the control of the atmosphere wherein its hermetically sealed walls, allowing fresh meat and poultry products to be held first in an atmosphere that retards the growth of bacteria until it is placed for sale in a retail display case. The package provides a dual layer lidding film with the inner layer being oxygen permeable and the outer layer being oxygen impermeable. At the time of display, the outer layer is removed so that oxygen can enter the package to activate the myoglobin in the meat to cause the meat to bloom to its usual red color. The lidding in part is formed by facing layers of easy peel polyethylene, LDPE treated with polybutylene.

Abstract: An effective oxygen barrier which can substantially extend the shelf life of oxygen sensitive products comprising at least outer and inner plies of a polymeric material and a substantially anaerobic space between the two or more plies.

Abstract: A package and a method are disclosed for preserving freshness of produce using a corrugated fiberboard composed of an outer liner having a carbon dioxide permeability coefficient Pco.sub.2 of greater than 5.times.10.sup.-10 cm.sup.3 (STP)cm/cm.sup.2 .multidot.s.multidot.cmHg at a temperature of 27.degree. C.; a corrugating medium; and an inner liner having a water-vapor transmission rate of less than 100 g/m.sup.2 .multidot.day at a temperature of 27.degree. C. The end parts of the corrugated fiber board which are exposed to an outer surface of the package are substantially sealed with a seal tape. A wrapping paper covered at least on one surface thereof with a resin layer which contains therein less than 0.917 g/cm.sup.3 density of a copolymer of ethylene and .alpha.-olefin having a carbon number of 3 to 12, having a carbon dioxide permeability coefficient of greater than 8.times.10.sup.-10 cm.sup.3 (STP)cm/cm.sup.2 .multidot.s.multidot.cmHg, a permeability coefficient ratio Pco.sub.2 /Po.sub.

Abstract: A package includes a protective band having a cavity for receiving a fragile food product unit. A wrap material is tightly secured around the food product unit and the protective band to form a package. The protective band may have alternating narrow segments and wide segments to ensure that the wrap material keeps the top and bottom extremities of the food product unit inside the protective band and spaced from the upper and lower edges of the wide segments of the protective band.

Abstract: The present invention provides a peelable laminate suitable for cook-in packaging and a method of cooking a food product. The method includes the steps of:a) enclosing a food product in the peelable laminate, the peelable laminate having(1) an edible film in contact with the food product, and(2) a protective film peelably adhered to the edible film; andb) heating the enclosed food product to at least partially cook the food product, the edible layer adhering to the at least partially cooked food product with an adhesive strength which is greater than the force required to peel the protective film from the edible film. In this manner, the protective film can be peeled from the edible film after cooking without product loss due to adherence of food particles to the film. Furthermore, the peelable laminate prevents or minimizes cook-out and allows a modifier to be transferred to the food product via the edible film during the cooking process.

Abstract: A laminated film useful for packaging includes two outer layers and a core layer of a polypropylene resin interposed therebetween. Each of the outer layers includes (A) an ethylene-.alpha.-olefin copolymer having a density of less than 0.910 g/cm.sup.3 but not less than 0.870 g/cm.sup.3 and an ethylene content of at least 50 mol % and showing only one endothermic peak when analyzed by differential scanning calorimetry (DSC), (B) an ethylene-.alpha.-olefin copolymer having a density of 0.910-0.935 g/cm.sup.3 and an ethylene content of at least 50 mol %, and (C) an anti-fogging agent. The density of (B) is greater by at least 0.008 g/cm.sup.3 than that of (A).

Abstract: An environmentally friendly polymer film pouch made from a polyethylene film structure for the packaging of flowable materials, for example, milk. The film may be a monolayer or multilayer structure, such as two-layer or a three-layer coextruded film containing at least one layer of a blend of an ultra low density polyethylene and a high pressure low density polyethylene as a seal layer having high melt strength. Also disclosed is a process for making the pouch for packaging flowable materials using a film structure described hereinabove.

Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more ethylenic polymers having a functional moiety selected from the group of esters, anhydrides, and carboxylic acids, and a coextrusion process for making the film.

Abstract: The invention relates to a barrier layer resisting the transmission of oxygen for multi-layer barrier film characterized in that it is made of a transparent copolyamide comprising three components. The first component is hexamethylenediamine and adipic acid. The second component is hexamethylenediamine and azelaic acid, hexamethylenediamine and sebacic acid, and mixtures thereof. The third component is hexamethylene-diamine and isophthalic acid, hexamethylenediamine and terephthalic acid, and mixtures thereof. The total of all components is 100 mol %, and the ratio of the barrier effects in the barrier layer with respect to carbon dioxide and oxygen is at least 3:1.

Abstract: A package which allows for butchering and packaging of fresh red meat at a centralized facility is provided which includes a an impermeable tray supporting the product, a first film sealed to the tray for enclosing the product, means defined within the first film for exchanging gases into and out of the package, and a second impermeable film enclosing the first film, such that removal of said impermeable film provides for the exchange of gases into and out of the package. The means for exchanging gases may be perforations defined within the first film, a second highly permeable film sealed to the first film, or an enlarged opening formed within the first film which is enclosed with a patch following adequate gas exchange at retail. Such gas exchange is required to release any low oxygen atmosphere and allow for the introduction of oxygen to the packaged meat product. Said means for exchanging gases having a gas transmission rate of at least about 50,000 cc/m.sup.2 /24 hrs./atm. at 73.degree. F.

Abstract: A container for storing or transporting heated food is constructed to keep water condensing from steam in the container from contacting the food item. The container includes a base Upon which the food item rests, and a cover portion which is adapted for placement-over the base to define a food storage chamber in which the food item is housed during storage and transport. Part of the cover portion is provided with a dual wall construction and has an inner wall portion positioned closest to the food storage food chamber and an outer wall portion spaced from the inner wall portion, so as to define a cavity therebetween. One or more openings are formed through the inner wall portion providing gaseous communication between the food storage chamber and the cavity. A series of ribs are provided about the openings to prevent condensate which forms in the cavity from returning through the openings into the chamber where it may otherwise contact the food.

Abstract: This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1.

Abstract: A thermal barrier in the form of a base material with a plurality of microcapsules containing a phase change material forms an insulative pad, such as a shoe insole. The microcapsules are surroundingly encapsulated and embedded within the base material. In addition, substantially all of the microcapsules are spaced apart from each other, the space between neighboring adjacent microcapsules containing a phase change material. The microcapsules may be anisotropically distributed to further reduce thermal conductivity of heat through the thermal barrier.

Abstract: A biaxially oriented polyamide film which has not only excellent bending pinhole resistance and excellent dimensional stability but also excellent tear linearity in the longitudinal direction of the film. More specifically, the invention provides a biaxially oriented polyamide film having a tear linearity in the longitudinal direction of the film, which includes as a main material nylon 6 and an aliphatic polyamide resin mixed in a weight ratio of from 75:25 to 99:1, wherein the difference in surface tension (dyne/cm) between the nylon 6 and the polyamide other than nylon 6 satisfies the following relationship (1)3.0.ltoreq..gamma..sub.A -.gamma..sub.B .ltoreq.15.0 (1)wherein .gamma..sub.A is a surface tension of N6 and .gamma..sub.B is a surface tension of PA.

Abstract: A method of manufacturing a monolayer heat-shrinkable, puncture-resistant biaxially oriented film is disclosed. The method includes a double bubble orientation step and extruding a primary tube that includes at least one substantially linear ethylene homopolymer or interpolymer, wherein the substantially linear ethylene homopolymer or interpolymer has an uniform branching distribution, a melt flow ratio I.sub.10 /I.sub.2, .gtoreq.5.63, and a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation M.sub.w /M.sub.n .ltoreq.(I.sub.10 /I.sub.2)-4.63, and is also characterized as having essentially no linear polymer fraction, a single DSC melting peak, a density greater than about 0.85 g/cc, and a favorable gas extrusion critical shear rate at the onset of surface melt fracture.

Abstract: A method for making a film which is useful in the packaging of newly formed blocks of cheese and demonstrates flexibility, extensibility, and improved sealing strength comprises extruding an ethylene vinyl acetate/very low density polyethylene sealing layer. In addition to barrier properties, flexibility and extensibility are, preferably, also provided by coextruding a core layer of ethylene vinyl alcohol copolymer containing at least 32% by weight of ethylene with the sealing layer.

Abstract: A coextruded film suitable for packaging a flowable material, particularly milk, in a form, fill and seal machine comprises a core layer of a blend of high density polyethylene and linear low density polyethylene and skin layers of a blend of linear low density polyethylene and ethylene-methyl acrylate copolymer.

Abstract: A process for the production of a biaxially-oriented multilayer polypropylene film having a silk-matt finish includes coextruding melts corresponding to the individual layers of the film through a flat-film die; taking off the coextruded film over a take-off roll having a temperature between about 40 and about 100.degree. C.; biaxially stretching the film; thermofixing, and optionally corona-treating, the biaxially-stretched film; and winding up the thermofixed and optionally corona-treated film.

Abstract: A perforated package of a composite integral sheet material which includes a first layer of absorbent material, a second layer of printable material and an impermeable pigmented polymer layer interposed between the first and second layers. The composite material has a plurality of air pockets formed between at least one of the first or second layers and the polymer layer, by discontinuously bonding the first or second layers to the polymer material. The package has two parallel lines of perforation which allow access to the interior of the package and to the foodstuff contained therein. A method of using the perforated package of composite integral material.

Abstract: A multilayer polypropylene film which includes at least one base layer containing propylene polymer or a propylene polymer mixture and resin, and at least one outer layer containing .alpha.-olefinic polymers having 2 to 10 carbon atoms is disclosed. The resin has a mean molecular weight of .gtoreq.1500. The invention also relates to a process for the production of the multilayer film, and to the use of the film in a twist wrapping process.

Abstract: The present utility model pertains to a tubular element for the formation of bags for the vacuum-packing of products, consisting of an inner layer or film (14) having thread-like elements (15), which extend along the length of the tubular element and are intended to be relief on at least on inner surface of the resulting bag and to define among themselves channels (16) for the evacuation, by suction, of air from the bag at the time of using the bag for the vacuum-packing of a product.

Abstract: Distortion of a heat shrinkable cook-in package in a hot air cooking medium is substantially reduced or eliminated by the use of a high sustained shrink force cook-in film as the casing for the package.

Abstract: The present utility model pertains to a tubular element for the formation of bags for the vacuum-packing of products, on the inner surface of which is inserted a film (14) which is made of a thermo-plastic material and consists of a plurality of blisters or bubbles (15) intended for delimiting a network of surface channels (16) and for accommodating the nontoxic, insert gas to be progressively released into the bag for the preservation of the packed product.

Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more polyolefins such as VLDPE or EVA and a coextrusion process for making the film.