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AssigneeTetra Laval Holdings & Finance S.A.
InventorsRolf Lasson, Karl-Hakan Sandeli
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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.
A multilayer structure intended for a packaging laminate with embossed appearance, characterised in that it comprises a relatively rigid base layer (10) and a flexible, deformable layer (11) disposed in planar relationship adjacent one another, in that the two layers are adhesively bonded to one another along part surfaces of the total contact surface of each respective layer according to a predetermined pattern;
The multilayer structure as claimed in any of the preceding claims, characterised in that the base layer (10) comprises a core layer of paper or paperboard.
The multilayer structure as claimed in any of the preceding claims, characterised in that the contact surface of one of said layers has been coated with an adhesion-promoting adhesive (12) according to the predetermined pattern on the part surfaces (a, b, c, d, e) along which both of said layers are intended to be adhesively bonded to one another.
The multilayer structure as claimed in any of the preceding claims, characterised in that the contact surface of one of said layers has been coated with an adhesive-inhibiting agent (14) according to the predetermined pattern only on those part surfaces (f, g, h, i) along which both layers are intended not to be adhesively bonded to one another.
A method of producing a multilayer structure (1a;
Dependencies are inferred from the claim text.