Abstract: The present disclosure relates to a packaging material comprising a core material layer having an area radially extending from an edge of a hole in said core material layer, wherein said area has a linearly or non-linearly decreasing core material layer thickness towards the edge of the hole. The disclosure further relates to a method for production of such a packaging material, and uses thereof.

Abstract: The present disclosure relates to a packaging material comprising a core material layer having an area radially extending from an edge of a hole in said core material layer, wherein said area has a linearly or non-linearly decreasing core material layer thickness towards the edge of the hole. The disclosure further relates to a method for production of such a packaging material, and uses thereof.

Abstract: Packaging laminate for a packaging container for oxygen-sensitive liquid food, such as milk, juice, wine and cooking oil. The packaging laminate has a layer of paper or paperboard, and a layer serving as gas barrier and composed of a material with barrier properties against gases, in particular oxygen. The layer serving as gas barrier is bonded to the paper or paperboard layer by a lamination layer, which comprises at least one layer of an adhesive polymer or polymer composition, which comprises monomer units with carboxyl acid functional groups. The packaging laminate also has outer liquid-tight coatings on both sides of the paper or paperboard layer.

Abstract: A method for producing packaging material in web form comprising a carcass layer having through holes, openings or slits, a barrier layer on one side of the carcass layer, a plastic lining arranged outside the barrier layer, and a laminant thermoplast arranged between the carcass layer and barrier layer. The method involves bringing the barrier layer at the same time as the carcass layer to adhere to the plastic lining and/or to the laminant thermoplast film in a press nip. The press nip comprises an impression roller exhibiting a jacket surface faced with an inner facing layer of elastic material possessing a first hardness and a first thickness, and an outer facing layer of elastic material possessing a second hardness and a second thickness. The first hardness is greater than the second hardness and the first thickness is greater than the second thickness.

Abstract: The invention relates to a method of producing packaging material in the form of a continuous laminate web (17) and being of the type which includes a core layer (2) of paper or cardboard whose one face displays a layer (7) which is disposed outside the core layer (2) and includes first an aluminium foil (4) and secondly a plastic coating (16) disposed outside the aluminium foil layer. Throughout its entire surface, the core layer (2) is covered with the above-mentioned layer (7), while along selected portions it extends out over the edges of the core layer (2). The above-mentioned layer (7) is formed in that the aluminium foil (4) and at least one thermoplastic material (6) are laminated to one another by being brought together between two rollers (10, 12) of which the one roller consists of a cooled roller and the other roller consists of a roller which is heated to a temperature exceeding the melting temperature of the thermoplastic.

Abstract: Impression roller (10) for a laminating machine for producing a packaging material which comprises a carcass layer (40) consisting of paper or carton, which carcass layer exhibits through holes (42), and which carcass layer exhibits, on one of its sides, a barrier layer (44), a plastic lining (46, 47) which is arranged outside the barrier layer, and a film of laminant thermoplast (43) which is arranged between the carcass layer (40) and the barrier layer (44), with the said impression roller exhibiting a jacket surface which is faced with an inner facing layer (12) consisting of an elastic material, exhibiting a first hardness and a first thickness. According to the invention, an outer facing layer (13) consisting of an elastic material, exhibiting a second hardness and a second thickness, with the said first hardness being greater than the said second hardness and with the said first thickness being greater than the said second thickness, is arranged on the outside of the said inner facing layer (12).

Abstract: A method for producing packaging material in web form comprising a carcass layer having through holes, openings or slits, a barrier layer on one side of the carcass layer, a plastic lining arranged outside the barrier layer, and a laminant thermoplast arranged between the carcass layer and barrier layer. The method involves bringing the barrier layer at the same time as the carcass layer to adhere to the plastic lining and/or to the laminant thermoplast film in a press nip. The press nip comprises an impression roller exhibiting a jacket surface faced with an inner facing layer of elastic material possessing a first hardness and a first thickness, and an outer facing layer of elastic material possessing a second hardness and a second thickness. The first hardness is greater than the second hardness and the first thickness is greater than the second thickness.

Abstract: The disclosure relates to a method of producing a well-integrated laminate material, for example a packaging laminate, in which method a first web (10a) of plastic, and a second web (10b) of plastic are brought together and permanently united to one another by the simultaneous application of heat and pressure, for the formation of the laminate material (10). In order to improve the adhesion between the webs (10a and 10b), these are subjected to a surface-activating treatment of non-chemical nature, preferably a corona treatment, prior to the uniting of the webs, whereby good adhesion and bonding between the webs is achieved without the employment of interjacent chemical adhesives.

Abstract: A method of producing a packaging laminate (10) in which a web is provided with through-going holes (2) which are covered on one side with a first outer layer (3) on the one side of the web and with a second outer layer (4) on the other side of the web in such a manner that the first and second outer layers (3 and 4) are permanently sealed to one another within the regions of the opening contour of the through-going holes. In order to ensure the permanent seal between the two outer layers (3 and 4), the web is subjected, after application of the first outer layer but prior to application of the second outer layer, to so-called flame-treating whereby accessible parts of the first outer layer within the regions of the through-going holes (2) are activated or polarized by means of one or more gas flames directed at the other side of the web.

Abstract: A packaging laminate includes a core layer (or web) with through-holes covered on one side with a first outer layer, and on another side with a second outer layer, such that the first and second outer layers are sealed to each other within the through-holes. To provide a permanent seal between the outer layers, the web can be flame-treated to activate or polarize parts of the first outer layer within the through-holes.

Abstract: A multilayer structure intended for a packaging laminate with embossed appearance comprises a base layer and flexible, deformable layer disposed in planar relationship adjacent one another, with both layers adhesively bonded to one another along part surfaces of the total contact surface of each respective layer in a predetermined pattern. The flexible layer may be permanently deformed along the part surface or part surfaces that are in abutment against, but not adheringly bonded to the base layer, so that it substantially deviates from being in abutment against the base layer. Methods of producing a multilayer structure and a packaging laminate, as well as packaging containers produced from the packaging laminate are also disclosed.

Abstract: The disclosure relates to a method of producing packages with opening arrangements and of the type which has a hole prepared in the package wall through which the package is intended to be emptied of its contents. A web of paper or paperboard is coated on its one side with liquid tight coating of plastic and, on its other side, with a metal foil which serves as oxygen gas barrier and which is bonded to the paper or paperboard layer by an adjacent adhesive layer. The coated web or packaging blank is thereafter transported further to a packing and filling machine where the web is provided with emptying-preparatory holes before being reformed into finished packages in a conventional manner.

Abstract: The disclosure relates to a crease-lined packaging laminate (20) which makes for more distinct and well-formed fold edges and thereby packaging containers with an attractive appearance and good configurational stability and handling stability, as well as a simple method of providing a packaging laminate with crease lines, which makes for more rational, and more economical changing of crease line patterns without the employment of expensive creasing tools. A packaging laminate (20) comprising at least two layers (11, 12) which both contribute to the total rigidity of the packaging laminate is provided with fold indications in that the adhesion between the two layers is reduced or eliminated along the linear regions along which the packaging laminate is to be folded.

Abstract: The invention relates to a method of producing packaging material in the form of a continuous laminate web (17) and being of the type which includes a core layer (2) of paper or cardboard whose one face displays a layer (7) which is disposed outside the core layer (2) and includes first an aluminium foil (4) and secondly a plastic coating (16) disposed outside the aluminium foil layer. Throughout its entire surface, the core layer (2) is covered with the above-mentioned layer (7), while along selected portions it extends out over the edges of the core layer (2). The above-mentioned layer (7) is formed in that the aluminium foil (4) and at least one thermoplastic material (6) are laminated to one another by being brought together between two rollers (10, 12) of which the one roller consists of a cooled roller and the other roller consists of a roller which is heated to a temperature exceeding the melting temperature of the thermoplastic.

Abstract: Impression roller (10) for a laminating machine for producing a packaging material which comprises a carcass layer (40) consisting of paper or carton, which carcass layer exhibits through holes (42), and which carcass layer exhibits, on one of its sides, a barrier layer (44), a plastic lining (46, 47) which is arranged outside the barrier layer, and a film of laminant thermoplast (43) which is arranged between the carcass layer (40) and the barrier layer (44), with the said impression roller exhibiting a jacket surface which is faced with an inner facing layer (12) consisting of an elastic material, exhibiting a first hardness and a first thickness. According to the invention, an outer facing layer (13) consisting of an elastic material, exhibiting a second hardness and a second thickness, with the said first hardness being greater than the said second hardness and with the said first thickness being greater than the said second thickness, is arranged on the outside of the said inner facing layer (12).

Abstract: A method of producing a packaging laminate (10) in which a web is provided with through-going holes (2) which are covered on one side with a first outer layer (3) on the one side of the web and with a second outer layer (4) on the other side of the web in such a manner that the first and second outer layers (3 and 4) are permanently sealed to one another within the regions of the opening contour of the through-going holes. In order to ensure the permanent seal between the two outer layers (3 and 4), the web is subjected, after application of the first outer layer but prior to application of the second outer layer, to so-called flame-treating whereby accessible parts of the first outer layer within the regions of the through-going holes (2) are activated or polarised by means of one or more gas flames directed at the other side of the web.

Abstract: The invention relates to a multilayer structure intended for a packaging laminate with embossed appearance which comprises a relatively rigid base layer and a flexible, deformable layer disposed in planar relationship adjacent one another in that both layers are adhesively bonded to one another along part surfaces of the total contact surface of each respective layer in accordance with a predetermined pattern, in which the flexible layer may be permanently deformed along the part surface or part surfaces which are in abutment against but not adheringly bonded to the base layer, so that it substantially deviates from being in abutment against the base layer. The invention also relates to a method of producing a multilayer structure and a packaging laminate according to the invention, as well as packaging containers produced from the packaging laminate.

Abstract: A method is disclosed for producing a printing ink decorated packaging material. The packaging material heat sealable outer coatings. One or both sides of the packaging material are subjected to corona discharge surface treatment to increase the surface tension. Printing is applied to the treated surface. The packaging material then passes the nip between heated rollers in order to reduce the surface energy of the outer plastic layers. Subsequently, a surface treatment of hydrogen peroxide is applied to the packaging material to sterilize the surface.

Abstract: A method of producing a packaging laminate for aseptic packages of the type which is produced in that a web of the packaging laminate 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 material is produced in that a web of paper which has, on the one side of the web, an applied outer coating of plastic, is, for the purpose of promoting adhesion, subjected to a surface treatment changing polarity, where after the treated outer plastic coating is provided with a decor of water-based printing ink which is applied in the desired pattern on the outside of the outer plastic coating.

Abstract: The disclosure relates to a crease-lined packaging laminate (20) which makes for more distinct and well-formed fold edges and thereby packaging containers with an attractive appearance and good configurational stability and handling stability, as well as a simple method of providing a packaging laminate with crease lines, which makes for more rational, and more economical changing of crease line patterns without the employment of expensive creasing tools. A packaging laminate (20) comprising at least two layers (11, 12) which both contribute to the total rigidity of the packaging laminate is provided with fold indications in that the adhesion between the two layers is reduced or eliminated along the linear regions along which the packaging laminate is to be folded.