Abstract: What is disclosed is a water impermeable package for room temperature, moisture curing, one-part sealants. The packages are characterized by having a sealable inner flexible resin film container which is wrapped with a sealable aluminum laminated second resin film or a sealable resin film with vacuum-deposited aluminum.

Abstract: A material for packaging light-sensitive materials composed of a composite sheet comprising a substrate coated with a middle layer(s) and a surface layer(s) is manufactured through melt co-extrusion, said surface layer(s) being of thermoplastic resins which have excellent heat seal properties yet have great neck-in, said middle layer(s) being of thermoplastic resins having small neck-in and excellent adhesion to a substrate, and any of layers of said composite sheet containing light-shielding material.

Abstract: The drawings and description disclose a heat sealable container for edible oils and other types of oils, and a blank for constructing same, having a laminated wall construction of suitable oil resistant barriers or layers which are compatible with one another insofar as bonding and sealing are concerned. Such wall construction includes central layers of aluminum foil and fluorochemically treated paperboard secured to one another by a suitable adhesive, an ionomer layer, such as Surlyn, formed on each outer paperboard and foil surface, and a layer of thermoplastic material, such as polyethylene, formed on each outer Surlyn surface.

Abstract: In combination, a predetermined quantity of particulate soluble beverage product, a predetermined quantity of aroma oil containing aromatic volatiles and a flexible air-tight packet for housing said particulate beverage product and said aroma oil for an extended period of time without substantial degradation in the quality or substantial decrease in the quantity of aromatic volatiles present in said aroma oil and said beverage product. In a particularly preferred embodiment the particulate soluble beverage product comprises instant coffee and the aroma oil comprises coffee aroma oil. Said packet preferably comprises at least two layers of a flexible sheet material which is substantially impervious to the passage of gas and liquid, said flexible sheet material having at least one surface which is substantially inert to the aromatic volatiles contained in said coffee aroma oil and said particulate soluble coffee product.

Abstract: The invention relates to a process for continuously manufacturing a composite band comprising a plastic sheet bonded to an aluminized pellicle, these two components consisting of separate bands before carrying out the process. The composite band made by the process can be used for instance for insulating or padding. This band can also be used after cutting and thermoforming as a pan or container for perishable products such as meat. The perishable product is put in the pan, and both are covered with a plastic film to give a stocking and hygienic presentation. To carry out the process and to bond the basic plastic band (expanded polystyrene) to the aluminized pellicle, these two sheets are introduced between calendering cylinders with interposing between the two sheets an intermediate film of plastic material at softening temperature to provide the adhesion. Of course, it is the non-aluminized side of the pellicle which is in contact with the polystyrene basic band.

Abstract: A heat-sealing sheet material can be obtained by forming, on one side of a sheet base material such as aluminum foil, a sealant layer composed of a graft copolymer comprising a trunk polymer of a 20 to 60% saponification product of an ethylene/vinyl acetate copolymer having a vinyl acetate content of 15 to 45% by weight and a branch polymer of an unsaturated carboxylic acid in a proportion of 10% by weight or less of the partially-saponified product. This sheet material exhibits excellent heat-sealing strength with respect to glass containers, and, moreover, there is almost no decrease in the sealing strength even when the material has been in contact with water. Accordingly, the sheet material is suitable as a sealing material for the opening rims of glass containers for water-containing food products such as jams and pickles.

Abstract: A process for the preparation of laminates comprising the steps of (1) putting a thermoplastic resin sheet or film and a metal foil or sheet one upon another with a specific polyolefin type resin being interposed therebetween, (2) heating the thus interposed specific polyolefin type resin to a temperature not lower than the melting point of the specific polyolefin type resin to obtain an intermediate laminate and (3) laminating at least one of thermoplastic sheets or films and paper on the metal foil or sheet side of said intermediate laminate using therebetween an ordinary adhesive not requiring heating at a temperature not lower than said melting point at the time of lamination thereby to obtain a desired laminate. In one embodiment, this invention also relates to a foodstuff packaging container wherein the innermost layer is a polyolefin resin sheet or film.

Abstract: The disclosure relates to a multi-layer snack food packaging material particularly suitable for forming potato chip bags and the like. The material comprises an outer layer of polypropylene, a low density polyethylene laminator and an inner layer which is, itself, a coextrusion. The inner coextruded layer comprises a first layer of high density polyethylene, a second layer of polypropylene and a third layer of ethylene methyl acrylate. The ethylene methyl acrylate is coated with an emulsion of polyvinylidene chloride, which seals the inner layers together upon application of heat. The package has many advantageous characteristics for use in snack food packaging and does not require glassine. The material has excellent oxygen and moisture barrier properties, good stiffness, good grease resistance and bond strength appropriate for easy opening by the consumer.

Abstract: A metal-deposited paper comprises a paper substrate; a thin continuous coating (a), formed on one surface of the paper substrate, of a film-forming resin having good adhesion to metal, resin coating (a) having a metal film deposited thereon; and a thin continuous coating (b) of polyvinyl alcohol formed on the other surface of the paper substrate; and a process for producing a metal-deposited paper, comprises the following steps; (i) a step of applying a thin continuous coating (a) of a film-forming resin having good adhesion to metal to one surface of a paper substrate; (ii) a step of applying a thin continuous coating (b) of polyvinyl alcohol on the other surface of the paper substrate; and (iii) a step of vacuum-depositing a metal on the surface of the resin coating (a).

Abstract: A flexible film laminate especially adapted for use in the manufacture of a retortable pouch for the packaging of food is disclosed which comprises:(a) a first layer of heat-sealable polyolefin;(b) a second layer of previously metallized thermoplastic polymer bonded to said first layer; and,(c) an adhesive bonding the first layer to the metallized surface of the second layer, said adhesive being a maleic acid anhydride adduct of ethylene-propylene copolymer.

Abstract: In a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable polymer layer, and a heat-resistant resin layer, the heat-sealable layer is the cracked product of the blend of a poly(propylene-ethylene) copolymer and an ethylene-vinyl acetate copolymer. This heat-sealable layer composition has improved flow properties and may be extrusion-coated onto a metal film substrate at high speeds.

Abstract: The method for producing foil paper and foil board with a bright surface, by first metalizing a transfer-carrier, applying a compatible tacky dress to the metalized carrier, pressing the metalized carrier at its tacky surface against a base of paper or board; then separating the carrier from the metalized portion transferred to the base of paper or board, and curing it at an elevated temperature.

Abstract: In a welded metallic can wherein the can body is covered at its joint portion with a film of an organic polymeric resin, the improvement wherein said film is characterized by being a multilayered film having at least one layer of a film of an organic polymeric resin and at least one layer selected from the group consisting of metallic foils, evaporation coated metallic layers and electroplated metallic layers, and further characterized in that the layer disposed adjacent the welded can is the film of an organic polymeric resin.

Abstract: Improved packaging, particularly suitable for dairy products, is disclosed. A plastic container is lined with aluminum foil in order to give better protection of the contents against light, oxygen and evaporation, and it protects the container against heat during filling. The container is closed by sealing an aluminum top thereon. The sealing area can be arranged in a variety of ways on the edge of the container between the aluminum top and an exposed portion of the plastic container. The aluminum foil can form a collar, which may be sealed between the container and its top.

Abstract: The invention relates to a novel duplex pouch structure which provides an improved means to package and process retortable foods and also provides a mechanically superior package which can be transported with only moderate protection, and yet will sustain minimal damage.

Abstract: A propylene copolymer, which comprises units of (A) propylene, (B) a monomer selected from the group consisting of branched alpha-olefins (i.e. 4-methyl-1-pentene), styrene and styrene derivatives (e.g. methyl styrene), and (C) an optional monomer selected from the group consisting of straight-chain alpha-olefins of 2 to 12 carbon atoms other than propylene (e.g. ethylene), and which is defined by its thermal analysis data on a differential scanning calorimeter; and a process for producing the copolymer. Block copolymers are preferable.

Abstract: Disclosed is a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable crystalline propylene type resin layer formed on one surface of the aluminum foil or sheet and a heat-resistant resin layer formed on the other surface of the aluminum foil or sheet, wherein the aluminum foil or sheet is heat-fusion-bonded to said crystalline propylene type resin layer through a layer of a modified olefin resin having a degree of crystallization of 15 to 95% and a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which the majority of the structural olefin units are propylene units and the minority of the structural olefin units are ethylene units.As the modified olefin polymer, a modified ethylene-propylene copolymer or a blend of a modified propylene type polymer with an ethylene type polymer is preferably employed.

Abstract: A laminated packaging film useful in producing such items as containers or pouches for liquid or semi-liquid matter, comprises an outer web of balanced biaxially-oriented thermoplastic material, a middle web of metallized thermoplastic material and an inner web of heat-sealable polyolefin. A vinylidene chloride polymer coating is provided on at least one of the outer or middle web. The pouches and containers formed by this film are exceptionally strong, durable and flexible.

Abstract: A process for preparing a retort-proof laminate for packaging foodstuffs which comprises laminating an aluminum substrate to at least one polyolefin film selected from the group consisting of high density-polyethylene, polypropylene, ethylene-propylene copolymers and polybutene films using as an adhesive a specific polyolefin resin in melted state prepared by combining together (A) at least one member selected from the group consisting of high-density polyethylene, polypropylene ethylene-propylene copolymers and polybutene, (B) maleic anhydride and (C) aluminum hydroxide, and by rendering said specific polyolefin resin substantially free from unreacted maleic anhydride and low molecular weight maleic anhydide homopolymers.The process also includes preparing a retort-proof coated aluminum substrate for packaging foodstuffs which comprises coating an aluminum substrate with a layer formed from the above-described specific polyolefin resin and thereafter forming a suitable retort packaging container therefrom.

Abstract: A packaging material for food to be subjected to high-temperature short-time sterilization, which comprises a flexible laminate sheet including (a) a heat-sealable inner face layer of a crystalline polypropylene, (b) an outer face layer of a thermoplastic or thermosetting resin having a melting point or decomposition point higher than the melting point of said polypropylene and, if desired, (c) an oxygen-barrier layer interposed between said layers (a) and (b), said polypropylene layer being composed of a film of a polypropylene having a melt flow index of 0.5 to 3, said film being characterized in that (i) when the film is extracted in salad oil at 130.degree. C. for 30 minutes, the amount extracted of the polypropylene is smaller than 1500 ppm, (ii) the polypropylene film has a pseudohexagonal crystal form or a crystal form of a combination of the pseudohexagonal system and .alpha.-monoclinic system and a degree of orientation not higher than 3.

Abstract: A laminated packaging film useful in producing such items as pouches and containers for liquids, comprises an outer layer of balanced biaxially oriented thermoplastic polymer, a middle layer of flexible metal foil, an inner layer of heat-sealable, rubber modified high density polyethylene, or ethylene copolymer and an adhesive layer between the middle and inner layers. The pouches and containers formed by this film are exceptionally strong, durable and flexible.

Abstract: A light weight packaging container, similar to a capsule and made by deep-drawing and/or stretching of a multi-layer foil composite, is composed of synthetic material and aluminum. An aluminum layer or foil having a thickness within the range of from one grain to a few grains is provided. At least one layer of synthetic material is fixed to the aluminum layer or foil. The total thickness of the synthetic layer or layers is substantially greater than that of the aluminum layer or foil. In one embodiment, only one layer of synthetic material is provided. In another embodiment, two layers of synthetic material are provided, one being fixed to one major surface of the aluminum layer or foil and the other being fixed to the other major surface of the aluminum layer or foil.

Abstract: A packaging material, and especially condiment-carrying packages prepared therefrom, which is characterized by its thinness and consequent ease of handling. Moreover, condiments packaged therein have greatly extended storage life. In general, the package comprises using a relatively thin coating formed of an ionomer and a polyethylene of relatively low softening point, this coating conveniently being coextruded and incorporated into a laminated structure which will normally also comprise layers of cellophane and aluminum foil.

Abstract: Disclosed is a coating system for use in connection with a ferrous plate to be drawn into containers for packing sulphur bearing foods. More particularly, the coating system is capable of being drawn and includes aluminum and zinc oxide for purposes of uniform interior appearance and sacrificial protection respectively.

Abstract: A package laminate is described which is abrasion and crack resistant and particularly suitable for use in wrapping food products. The package laminate is formed with a biaxially oriented nylon film bonded to one side of an inner located metallic foil with an intermediate bonding layer. A smooth abrasion resistant and moisture impermeable layer in the form of a triextrusion product is bonded to the other side of the metallic foil with an intermediate bonding layer. The completed package laminate is characterized by its resistance to cracking from repeated flexure while enabling a straight, predetermined directional tear without a jagged edge.

Abstract: A package for a pressurized liquid includes an inner container for the liquid having a generally cushion-like shape made from a tubular material which is sealed transversely at its opposite ends. The tubular material is a laminate of thin plastic and metallic foil impervious to the liquid. The inner container is enclosed within an outer reinforcing casing, open at both ends, which extends for the full length of the inner container. The casing is made from a relatively stiff material and consists of paper board the outside of which is coated with a liquid-tight layer.

Abstract: Multiple ply packaging materials formed of an inner ply of substrate material superimposed between outer plies of thermoplastic films exhibit excellent gas barrier properties. The inner ply may comprise any suitable material such as nylon, but for significantly improved gas barrier properties preferably comprises either a plastic film having a metal coating on one or both surfaces thereof, or a metal foil. The inner ply is encapsulated between the outer thermoplastic plies to isolate the inner ply from the contents of the package, especially when the material is exposed to or is employed to package liquids, the outer plies of thermoplastic film being sealed about their edges outwardly from the edges of the inner ply.

Abstract: A process for the production of a laminate which comprises laminating a boehmite- or pseudoboehmite-treated aluminum foil with an oxidation-treated polyolefin film with the treated surface of the foil facing to the treated surface of the film under heat and pressure without the use of binders for lamination. In one embodiment, the laminate so produced may be laminated with the same laminate with the treated surface of the foil of the former facing to the treated surface of the film of the latter, under heat and pressure, or it may be laminated on the aluminum foil side with a resin film, such as a polyester or polyamide film, with the use of a binder between the aluminum foil and the resin film.

Abstract: A unitary packaging laminate comprising a foil substrate, a polypropylene outer layer, an intermediate layer of polyethylene or ethylene-acrylic acid copolymer located between and adhered to said substrate and said outer layer, a printed adhesive pattern of low temperature heat sealable material on the exterior surface of said outer layer, and a coating of low temperature heat sealable material on the inner surface of said substrate.

Abstract: The interior side seam areas of tinplate can bodies exhibit improved resistance to corrosion by sulfur containing foods packaged therein when the side seam is soldered with a tin solder comprised of 0.1-0.5 percent by weight indium, 0.1-0.5 percent by weight bismuth, the remainder being tin.

Abstract: A bonded can having a high hot water resistance, which consists of a metal material having both the confronting side edges bonded together by a linear polyamide adhesive through an epoxy-phenolic resin undercoating composition, wherein said epoxy-phenolic resin undercoating composition comprises 50 to 95% by weight of an epoxy resin having a number average molecular weight of 800 to 5500, which is obtained by condensation of an epihalohydrin with bisphenol A, and 5 to 50% by weight of a resol-type phenol-aldehyde resin having a number average molecular weight of 200 to 1000, which is obtained by reacting a mixed phenol comprising 65 to 98% by weight of a dihydric phenol represented by the following general formula: ##STR1## wherein R stands for a bridging group or is a direct bond,and 2 to 35% by weight of a monohydric phenol, with an aldehyde in the presence of a basic catalyst.This bonded can can resist retort sterilization conducted at 122.degree. to 135.degree. C.

Abstract: A process for the manufacture of an Al/plastic laminate foil is described. The laminate comprises an aluminum foil with plastic foil stuck on to at least one of its sides whereby the plastic foils exhibits an elongation at fraction of 80-100% and the adhesive joining the components achieves a shear strength of at least 0.3 N/mm.sup.2. The plastic foils bear a greater part of the applied load when the laminate foil is stressed. The laminate foil is suitable for the manufacture of containers by deep drawing whereby no cracks or macropores form in the Al foil. The laminate effectively excludes light, water vapor and aromas from external sources and prevents the loss of aroma from the contents of such containers.

Abstract: A flexible double-layer polypropylene laminate consisting of a bioriented film consisting essentially of isotactic polypropylene with an atactic polypropylene content of less than 6% by weight and an intrinsic viscosity (standard ASTM D 1601) of from 1.5 to 3.0 dl/g, adhesively bonded with a non-oriented film consisting essentially of a mixture of isotactic polypropylene and atactic polypropylene, the latter in an amount of from 15 to 30% by weight of the total weight of the said mixture, the isotactic polypropylene of said mixture having an intrinsic viscosity (standard ASTM D 1601) of from 1.0 to 1.5 dl/g and the atactic polypropylene of said mixture having a density (standard ASTM D 1505) of from 0.855 to 0.865 g/cm.sup.3 and a viscosity at 160.degree. C. of from 3,000 to 10,000 cps.

Abstract: A steel sheet for production of DrD or DI cans, comprising a cold rolled steel sheet, a solvent type thermosetting paint coating containing ethylene-vinyl acetate copolymer baked on the steel sheet in a completely cured state.

Abstract: A hermetically sealed pouch which is pleated, provided with a line of weakness and a tear initiating cut adjacent the line of weakness. The line of weakness extends completely around the pouch near the top of the package. A sealed area surrounds the cut to establish a barrier between the cut and the pouch interior. In one embodiment two parallel lines of weakness are used and the cut is made in the material which intervenes.

Abstract: A flexible packaging sheet material bearing a tacky wax composition coating and a non-blocking overcoating in the form of a continuous film of an ethylene-vinyl acetate copolymer which incorporates between 10 and 35 percent by weight of solid low to medium density polyethylene particles of a size smaller than about 50 microns.

Abstract: A light weight flexible easy open impermeable metal foil package including a peripheral thermoplastic seal an intermediate solder seal, and an inner thermoplastic seal.

Abstract: An oriented two-layered laminate of vinylidene chloride-vinyl chloride copolymer as one layer and an ethylene-unsaturated ester type copolymer as the other layer. To this laminate may be adhered another polymer, also capable of being oriented, plastic sheet, paper sheet or board, metal or metal foil. Products such as pouches, chubs, formed troughs and the like can be made therefrom because the vinylidene chloride-vinyl chloride copolymer retains its orientation.

Abstract: By predetermined selection of tin coating weight in the manufacture of electrolytically tinplated continuous steel strip, cup formation of sheet metal blanks cut from such tinplated flat rolled steel with the selected tin coating weight disposed internally, selective reduction of sidewall gage and coating weight, maintenance of tin coating weight on the interior surface of the bottom wall, and selective organic coating, the present invention enables production of special container packs, previously limited to three-piece containers, from unitary seamless can bodies. Selected tin coating weight on the interior surface of the bottom wall of the can body is maintained throughout the manufacturing process and this surface is exposed to container contents. The sidewall interior surface of the can body is protected from exposure to container contents by an organic coating.

Abstract: A heat-adhesive film laminate comprising a film of a plastic material having excellent heat resistance such as polyesters, polyamides or polycarbonates laminated on one side of a metal foil such as aluminum foil, copper foil, iron foil or the like and a film of a resin comprising predominantly block copolyester having a melting point of higher than 140.degree. C but lower than the temperature at which the characteristics of the plastic film is deteriorated and a Young's modulus .epsilon. (dyne/cm.sup.2) and a breaking elongation (.DELTA.l/lo) .times. 100 (%) when measured at 20.degree. C and 100.degree. C being as follows, respectively:10.sup.7 (dyne/cm.sup.2) < .epsilon. < 10.sup.10 (dyne/cm.sup.2) and(.DELTA.l/lo) .times. 100 > 40 (%)laminated on other side of the metal foil.

Abstract: Packaged aseptic soya bean curd containing no bactericidal agents is manufactured by a method which comprises continuously sterilizing a soya bean juice by maintaining it at a temperature of 128.degree. to 150.degree. C for 1 to 6 seconds and cooling to room temperature; homogeneously mixing said sterilized soya bean juice with a sterilized coagulating agent-containing solution in an aseptic atmosphere continuously or in a pipeline; continuously filling the resulting liquid mixture into a container in an aseptic atmosphere and sealing it; and dipping said sealed container into a water tank heated to 70.degree. to 95.degree. C for 20 to 60 minutes in order to coagulate the mixture.

Abstract: An improved metal foil composite sheet and method of fabricating the same for heating and/or cooling food products. Metal foil is coated on one surface with a heat stable, thermoplastic, epoxy and on its second surface with a heat resistant, dielectric, thermosetting base coat and a top coat of a heat resistant, heat absorptive, thermosetting material. The top coat may be applied in zones of distinct thicknesses simultaneously. Such application provides for legible printing, while preserving the desired heat absorptive properties on the entire foil pouch stock including both the printed and unprinted regions. A completed foil pouch composed of the foil composite sheet permits uniform heating and/or cooling of foods over an extended range of temperatures and times while resisting undesired deterioration.

Abstract: An improved paperboard laminate for containers for bulk packaging liquids, syrups and pastes, which includes a layer of a high strength polymer film and which also may include a layer of aluminum foil.

Abstract: The invention relates to polymeric laminates for packaging. According to the invention, such laminates contain an oxygen barrier layer which is composed of a hydrolysed olefin/vinyl ester copolymer, preferably a hydrolysed ethylene/vinyl acetate copolymer. Other layers in the laminate protect the oxygen barrier layer from moisture and provide a heat-sealable surface layer. The laminates withstand the temperatures of 80.degree.-130.degree.C employed in pasteurisation and sterilisation procedures, and are therefore of value in the preparation of pasteurised and sterilised packages of oxygen-sensitive foodstuffs.

Abstract: A spiral wound can is described in which the body of the can is made up of a relatively heavy fiberboard base or body layer lined within by an oil and moisture impermeable barrier formed from a laminate of aluminum foil and paper. The heavy base layer includes a helically extending separation line or butt joint bonded together by the liner and a reinforcing tensile element in the form of a reinforcing strip. A discrete label covers the reinforcing strip and the body stock and is bonded to the body stock by at least two broken or unbroken lines of adhesive on opposite sides of the reinforcing strip. A circumferentially extending collar cut is made through both the label and the reinforcing strip to facilitate their removal. In one form of the invention, the reinforcing strip is bonded more strongly to the label than to the body and is removed when the label is removed. In another form of the invention, the label is not bonded to the reinforcing strip and is removed first.