Embossed packaging laminate and method of making laminate
AssigneeTetra Laval Holdings & Finance S.A.
InventorsRolf Lasson, Karl-Håkan Sandell
Life of this patent
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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.
Claims14
A multilayer structure intended for a packaging laminate with embossed appearance, wherein it comprises a relatively rigid base layer and a flexible, deformable layer 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;
- and that the flexible layer may be permanently deformed along the part surface or part surfaces which are abutting against but not adheringly bonded to the base layer, so that it will substantially deviate from being in abutment against the base layer, wherein (i) the contact surface of one of said layers has been coated with an adhesion-promoting agent according to the predetermined pattern on the part surfaces (a, b, c, d, e) alone which both of said layers are intended to be adhesively bonded to one another, or (ii) the contact surface of one of said layers has been coated with an adhesive-inhibiting agent 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;
- 1b) intended for a packaging laminate with embossed appearance, wherein a flexible layer is disposed adjacent a relatively more rigid base layer, wherein (i) the contact surface of one of said layers has been coated with an adhesion-promoting agent 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, or (ii) the contact surface of one of said layers has been coated with an adhesive-inhibiting agent 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, where after the two layers are caused to adhere, and not to adhere, respectively, to one another along said part surfaces (a, b, c, d, e;
- f, g, h, i) of the total contact surface of each respective layer according to the predetermined pattern.
Dependencies are inferred from the claim text.