A layer element, which comprises at least three layers A, B, and C in the configuration A-B-C, wherein - layer A comprises a polyethylene composition (PE-A) comprising a copolymer of ethylene, which is selected from - a copolymer of ethylene, which bears silane group(s) containing units (PE-A-a); or - a copolymer of ethylene with polar comonomer units selected from one or more of (C 1 -C 6)-alkyl acrylate or (C 1 -C 6)-alkyl (C 1 -C 6)-alkylacrylate comonomer units, which additionally bears silane group(s) containing units (PE-A-b), whereby, the copolymer of ethylene (PE-A-a) is different from the copolymer of ethylene (PE-A-b); - layer B comprises a polyethylene composition (PE-B) comprising a copolymer of ethylene, which is selected from - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms (PE-B-a), which has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears silane group(s) containing units (PE-B-b), having a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer unit(s) selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imides and mixtures thereof (PE-B-c), and has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; and - layer C comprises a polypropylene composition (PP-C) comprising a polymer of propylene (PP-C-a), wherein layers A and B and layers B and C are in adhering contact with each other. - layer A comprises a polyethylene composition (PE-A) comprising a copolymer of ethylene, which is selected from - a copolymer of ethylene, which bears silane group(s) containing units (PE-A-a); or - a copolymer of ethylene with polar comonomer units selected from one or more of (C 1 -C 6)-alkyl acrylate or (C 1 -C 6)-alkyl (C 1 -C 6)-alkylacrylate comonomer units, which additionally bears silane group(s) containing units (PE-A-b), whereby, the copolymer of ethylene (PE-A-a) is different from the copolymer of ethylene (PE-A-b); - a copolymer of ethylene, which bears silane group(s) containing units (PE-A-a); or - a copolymer of ethylene with polar comonomer units selected from one or more of (C 1 -C 6)-alkyl acrylate or (C 1 -C 6)-alkyl (C 1 -C 6)-alkylacrylate comonomer units, which additionally bears silane group(s) containing units (PE-A-b), - layer B comprises a polyethylene composition (PE-B) comprising a copolymer of ethylene, which is selected from - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms (PE-B-a), which has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears silane group(s) containing units (PE-B-b), having a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer unit(s) selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imides and mixtures thereof (PE-B-c), and has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; and - layer C comprises a polypropylene composition (PP-C) comprising a polymer of propylene (PP-C-a), - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms (PE-B-a), which has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer units selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears silane group(s) containing units (PE-B-b), having a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; or - a copolymer of ethylene and comonomer unit(s) selected from one or more of alpha-olefins having from 3 to 12 carbon atoms, which additionally bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imides and mixtures thereof (PE-B-c), and has a density of from 850 kg/m 3 to 905 kg/m 3, determined according to ISO 1183 on compression moulded plaques; and - layer C comprises a polypropylene composition (PP-C) comprising a polymer of propylene (PP-C-a),