Patent ID: 7935400

Claim:
Packaging laminate comprising a core layer of paper or carton with at least one through-going hole, opening or slit, a layer of thermoplastics applied onto one outer side of the core layer, an aluminum foil applied onto the other, inner, side of the core layer, extending throughout the laminate and extending over the at least one through-going hole, opening or slit, and bonded to the core layer by an intermediate layer of thermoplastics, the two layers of thermoplastics both extending throughout the laminate and being sealed to each other within the region of the through-going hole, opening or slit, to form a membrane of aluminum foil and thermoplastics, and one or more layers of thermoplastic materials applied onto the other, inner, side of the aluminum foil, wherein, the one or more layers of thermoplastic materials consist of a first adhesive part-layer applied onto the aluminum foil, a second intermediate part-layer consisting of low density polyethylene that is not a linear low density polyethylene, and a third innermost part-layer comprising in the majority a metallocene polyethylene, which is an ethylene-α-olefin copolymer, polymerised in the presence of a metallocene catalyst, wherein the first adhesive part-layer is in direct contact with the aluminum foil, wherein the second intermediate part-layer is in direct contact with the first adhesive-part layer, wherein the packaging laminate comprises an opening device comprising a screw top that is attached to the membrane of aluminum foil and thermoplastics at the region of the through-going hole, opening or slit, wherein the third innermost part-layer is the innermost layer of the laminate and comprises the innermost surface of the laminate.