Lids for closing off containers

A lid for closing off a container that has a sealing seam, said lid contains a substrate material having with respect to the container on which the lid is used, an outward facing surface with printing thereon and an inward facing sealing layer, the sealing layer is a member selected from the group consisting of (a) an extrusion layer, (b) a coextrusion layer and (c) a coextrusion layer that contains (i) a bonding agent and/or a primer and (ii) a sealable thermoplastic, and that has been extruded or coextruded, onto the substrate material on the other surface of the substrate material and has then been subjected to pressure from a cooling roller having a contact surface with a roughness pattern, the sealing layer extending completely over said other surface of the substrate, the sealing layer on the free surface having embossing with a depth of roughness of up to 50 μm, and the surface of the substrate material with the printing thereon is smooth and is not embossed.

A lid for closing off a container that has a sealing seam, said lid contains a substrate material having with respect to the container on which the lid is used, an outward facing surface with printing thereon and an inward facing sealing layer, the substrate material comprises a combination of at least one thermoplastic and/or a cellophane and/or a cellulose-containing material and/or a metal foil, in the form of a multilayer, nonembossed composite material, the sealing layer has a weight per unit area of 30 g/m2 and less, the sealing layer is a coextrudate containing a bonding agent in the form of an extrusion layer having a weight per unit area of from 2 to 10 g/m2, and an extrusion layer of thermoplastic having a weight per unit are from 3 to 25 g/m2, the sealing layer has been coextruded onto the substrate material on the other surface of the substrate material and has then been subjected to pressure from a cooling roller having a contact surface with a roughness pattern, the sealing layer extending completely over said other surface of the substrate, the sealing layer on the free surface having embossing with a depth of roughness of up to 50 μm, and the surface of the substrate material with the printing thereon is smooth and is not embossed.

A lid for closing off a container that has a sealing seam, said lid contains a substrate material having with respect to the container on which the lid is used, an outward facing surface with printing thereon and an inward facing sealing layer, the substrate material comprises a combination of at least one thermoplastic and/or a cellophane and/or a cellulose-containing material and/or a metal foil, in the form of a multilayer, nonembossed composite material, the sealing lid has a weight per unit area of from 5 to 10 g/m2, the sealing layer is a coextrude containing a bonding agent in the form of an extrusion layer having a weight per unit area of from 2 to 8 g/m2 and an extrusion layer of thermoplastic having a weight per unit area of from 5 to 10 g/m2, the sealing layer has been coextruded onto the substrate material on the other surface of the substrate material and has then been subjected to pressure from a cooling roller having a contact surface with a roughness pattern, the sealing layer extending completely over said other surface of the substrate, the sealing layer on the free surface having embossing with a depth of roughness of up to 50 μm and the surface of the substrate material with the printing thereon is smooth and is not embossed.