Abstract: A packaging laminate for a retortable packaging container for a food in which the packed food may be stored and, after storage, be heated by microwaves without the packaging container first needing to be opened. The packaging laminate has a core layer and outer, liquid-tight thermoplastic coatings which withstand heating in a retort. Between the core layer and one of the outer coatings, the packaging laminate has a gas barrier film bonded to the core layer. To increase the internal cohesion of the packaging laminate between the layers as well as the tightness properties of the packaging laminate against gases, the film displays, at least on one side, an outer coating of a water-soluble adhesion-promoting polymer component, preferably a modified polyacrylic acid and a water-soluble barrier-increasing polymer component, preferably a polyvinyl alcohol, in a coating quantity of between 1 and 3 g/m2, such as, for example, 1.6 g/m2.

Abstract: A packaging laminate for a retortable packaging container or carton, comprising a core layer (11) and outer, liquid-tight coatings (12 and 13) on both sides of the core layer (11). The one (12) of the two outer coatings carries decorative artwork (14) of printing ink which is both mechanically and thermally protected by a layer (18) of lacquer applied on the coating (12) to make possible heat treatment at high humidity and temperature conditions of a packaging container produced from the packaging laminate (10), without the printing ink decorative artwork of the packaging container deteriorating in quality.

Abstract: A packaging laminate for a retortable packaging container, the packaging laminate (30) including a paper or paperboard layer (31), outer, liquid-tight coatings (32; 33) and an aluminium foil (34) serving as gas barrier between the paper or paperboard layer (31) and one of the two outer liquid-tight coatings (32). In order to compensate for or counteract possible loss of gas tightness because of crack formations or similar untightness in the tensile-sensitive aluminium foil (34), the packaging laminate (30) includes at least one additional layer (35) serving as gas barrier between the paper or paperboard layer (31) and the aluminium foil (34).

Abstract: The disclosure relates to a packaging laminate for a retortable packaging container comprising a core layer (11), outer, liquid-tight coatings (12 and 13) and a gas barrier (14) disposed between the one coating (12) and the core layer (11). Between the gas barrier (14) and the core layer (11), there is a layer (16) of a lamination or sealing agent of such a nature that the lamination or sealing agent has a melting point which is higher than the maximum temperature to which the retortable packaging container is to be subjected during a normal heat treatment in a retort. The lamination or sealing agent in the layer (16) may, for example, be a polypropylene with a melting point of above 130° C.

Abstract: A packaging laminate for a retortable packaging container can include a core layer; outer, liquid-tight coatings; and an aluminium foil serving as gas barrier between the core layer and one of the two outer liquid-tight coatings. The packaging laminate can include at least one additional layer serving as gas barrier between the core layer and the aluminium foil. The additional gas barrier layer can be bonded to the core layer by an interjacent lamination or adhesive layer.

Abstract: A packaging laminate for a retortable packaging container, the packaging laminate (30) including a paper or paperboard layer (31), outer, liquid-tight coatings (32; 33) and an aluminium foil (34) serving as gas barrier between the paper or paperboard layer (31) and one of the two outer liquid-tight coatings (32). In order to compensate for or counteract possible loss of gas tightness because of crack formations or similar untightness in the tensile-sensitive aluminium foil (34), the packaging laminate (30) includes at least one additional layer (35) serving as gas barrier between the paper or paperboard layer (31) and the aluminium foil (34).

Abstract: The present invention provides a method for producing a packaging laminate having excellent gas barrier properties. The method involves applying a solution or dispersion of starch or starch derivative to a surface of a substrate of paper or paperboard, and applying a layer of plastic to said starch or starch derivative so as to modify the properties of same such that the starch or starch derivative provides a gas barrier property.

Abstract: The disclosure relates to a packaging laminate for a retortable packaging container comprising a core layer (11), outer, liquid-tight coatings (12 and 13) and a gas barrier (14) disposed between the one coating (12) and the core layer (11). Between the gas barrier (14) and the core layer (11), there is a layer (16) of a lamination or sealing agent of such a nature that the lamination or sealing agent has a melting point which is higher than the maximum temperature to which the retortable packaging container is to be subjected during a normal heat treatment in a retort. The lamination or sealing agent in the layer (16) may, for example, be a polypropylene with a melting point of above 130° C.

Abstract: The invention relates to a method of producing a laminated packaging material including a core layer of paper or paperboard and a barrier layer applied on one side of the core layer. The invention also relates to a laminated packaging material produced according to the method, as well as a packaging container which is produced from the laminated packaging material.

Abstract: A packaging laminate for a retortable packaging container or carton, comprising a core layer (11) and outer, liquid-tight coatings (12 and 13) on both sides of the core layer (11). The one (12) of the two outer coatings carries decorative artwork (14) of printing ink which is both mechanically and thermally protected by a layer (18) of lacquer applied on the coating (12) to make possible heat treatment at high humidity and temperature conditions of a packaging container produced from the packaging laminate (10), without the printing ink decorative artwork of the packaging container deteriorating in quality.

Abstract: The invention relates to a packaging laminate having one or more gas barrier layers of starch or starch derivative providing an oxygen gas barrier property of 50, preferably 30 cm3/m2 at 24 h, 1 atm (23° C., 50% RH) or better, said gas barrier layer having a dry coating weight no more than 7 g/m2. The invention also relates to a method for producing such a packaging laminate and to packaging containers manufactured from the packaging laminate.

Abstract: The disclosure relates to printing ink-decorated packaging laminate for aseptic packages of the type which is produced in that a web of paper which has an outer coating of plastic is, for the purpose of sterilization, led through a bath of hydrogen peroxide prior to the reforming of the web into aseptic packages. The packaging laminate has a décor of water-based printing ink which is applied in the desired pattern on the outside of the outer plastic coating. For the purpose of protecting the water-based printing ink décor against attack from hydrogen peroxide in connection with the sterilization process, the packaging laminate is provided with an outer layer of water-based polyethylene or water-based acid-modified polyethylene which, by means of so-called dispersion coating, is applied on the printing ink-decorated outer plastic coating after, or in connection with the application of said printing ink décor.

Abstract: The invention relates to a method of producing a laminated packaging material including a core layer of paper or paperboard and a barrier layer applied on one side of the core layer. The invention also relates to a laminated packaging material produced according to the method, as well as a packaging container which is produced from the laminated packaging material.

Abstract: A sheet- or web-shaped packaging blank (10) of a laminate including a core layer (11) and a layer of a moisture-sensitive gas barrier material (13), in which the gas barrier layer is disposed between two layers (14, 15) of a moisture-resistant material and is omitted in narrow strip shaped regions (16a, 16b) along both longitudinal edges of the packaging blank. The moisture-sensitive gas barrier layer (13) will by such means be encapsulated between moisture-resistant material and well protected against the action of ambient moisture also along the longitudinal, exposed incision edges of the packaging blank. The moisture-sensitive gas barrier material preferably substantially comprises PVOH and is applied preferably by means of coating in the form of an aqueous dispersion and subsequent drying.