Abstract:
The present invention relates to a lid for welding on and closing a package, preferably a disposable package of a polymer material, said lid comprising a PET sheet with a thickness from 23 to 50 μ, on one side of which a metallized layer is applied, said metallized layer having applied thereon a COEX coating in an amount of from about 10 to about 25 g/m 2 , said COEX coating containing a polymer which is selected to as to be compatible with the polymer material in the package.
Abstract:
A sheet (2) is made by the method of the invention, in particular for use for the punching of lids for containers, in that a PE layer (5a) and a polyester (PET) welding layer (5b) of an amorphous polyester are applied to a base sheet layer (4) of polyester (PET) by coextrusion to form the finished sheet laminate (2). This ensures that the sheet (2) is transparent throughout, just as it provides the possibility of controlled delamination by separation of the PE layer (5a) from the PET welding layer (5b) in the welding area only, when the sheet (2) is pulled off a container (1). In addition, the sheet does not curl when punched into lids prior to being applied to the containers (1).
Abstract:
A strip pack sheet laminate for being heat-sealed to an opposed sheet laminate for providing a peelable strip pack, the strip pack sheet laminate comprising a polyester film, a barrier layer, and an extrusion coated heat seal layer. 10. A child-resistant package, such as a blister pack or a strip pack, comprising a number of packaged products, a top web sealed to a bottom web, two weakened tear lines dividing the package into four sections, the two tear lines intersecting each other in a peel area, so that tearing along the two tear lines allows access to a peel tab positioned in a corner of at least one of the sections, pockets being provided in sections, wherein at least one of the tear lines, where it is closest to a peripheral circumferential rim of the package, is provided at a distance from the circumferential rim of at least 2 mm, and/or the or each tear line extends less than 99 % of the associated distance between said two points.
Abstract:
A heat-sealable packaging sheet comprising a base sheet of paper, a heat-sealable ethylene layer, a polyamide layer, and a polymer coextrusion coating tie layer, wherein the tie layer, the polyamide layer, and the ethylene layer have been co-extrusion coated together on a second surface of the base sheet, wherein the base sheet constitutes at least 73 wt% of a total grammage of the packaging sheet, and the coextrusion coating constitutes no more than 27 wt% of a total grammage of the packaging sheet, wherein the base sheet has a grammage of 60 to 150 g/m 2 , and the coextrusion coating has a grammage of 5 to 32 g/m 2 , wherein the tie layer has a grammage of 1 to 30 g/m 2 , wherein the polyamide layer has a grammage of 1 to 30 g/m 2 , wherein the ethylene layer has a grammage of 1 to 30 g/m 2 , and wherein the ethylene layer essentially consists of a coextrusion coatable copolymer of ethylene and at least one acid comonomer, wherein the at least one comonomer constitutes 5 to 20 wt% of the ethylene layer.
Abstract:
A cheese package comprising cheese and a packaging sheet (1), wherein the packaging sheet (1) comprises: an inner surface (2) and an outer surface (3) of the packaging sheet (1), said inner surface (2) facing the cheese (15), a paper layer (4) with a first surface (5) and a second surface (6), and a coloured layer (7) provided at or on the first surface (5) of the paper layer (4), an outer surface (9) of the coloured layer (7) establishing said outer surface (3) of the packaging sheet (1), and wherein the cheese is wrapped in the packaging sheet (1), at least part of the inner surface of the packaging sheet abutting the cheese, wherein the packaging sheet further comprises: a polymer layer (8) with a water vapour transmission rate according to ASTM F1249 of at least 300 g/m 2 /24 hours at 38°C and 90 % atmospheric humidity, the polymer layer (8) being positioned at and being coated on the second surface (6) of the paper layer (4) with a first surface (10) of the polymer layer (8) facing the paper layer (4) and a second surface (11) of the polymer layer (8) establishing said inner surface (2) of the packaging sheet (1), wherein the polymer layer comprises at least 70 % by weight polyolefin.
Abstract:
The present invention relates to a method for providing an extreme chemical resistant film whereby a tie layer and a contact layer are coextruded with a base layer, such as a metal foil, as well as films and laminates obtained by the method and uses of the films and laminates to pack aggressive chemical substances such as nicotine, lidocaine, fentanyl and rivastigmine.
Abstract:
Aspects of the disclosure relate to methods for making large areas of high aspect ratio micro or nanostructured foil using existing extrusion coating equipment. A method is disclosed for producing a high aspect ratio micro- or nanostructured thermoplastic polymer foil, or a nanostructured thermoplastic polymer coating on a carrier foil, comprising at least one high aspect ratio nanostructured surface area. The method comprises applying a high aspect ratio nanostructured surface on an extrusion coating roller and maintaining the temperature of the roller below the solidification temperature of the thermoplastic material. A thermoplastic foil and a thermoplastic coating made by the method is also disclosed.