A planar composite for the production of a container surrounding an interior, comprising a. a carrier layer of paper or cardboard; b. a barrier layer of plastic joined to the carrier layer; c. an adhesion promoter layer; d. at least two layers (6, 7) of thermoplastic plastic KSa and KSw which are provided on the side of the barrier layer of plastic facing away from the carrier layer, wherein the at least two layers (6, 7) of thermoplastic plastic are made of a polyethylene; wherein from the at least two layers (6, 7) of thermoplastic plastic KSa and KSw the layer of thermoplastic KSw is furthest removed from the carrier layer, and wherein the layer of thermoplastic KSw is a plastics mixture of at least two plastics that comprises a polyethylene prepared by means of a metallocene as one of the at least two mixture components; wherein the plastic mixture comprises as one of the at least two mixture components 10 to 50 wt.%, based on the plastics mixture, of the polyethylene prepared by means of a metallocene; wherein the carrier layer has at least one hole; wherein the at least one hole is covered by the barrier layer of plastic and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw as composite layers; wherein no metal foil is provided between the carrier layer and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw; wherein at least one further layer of thermoplastic plastic KSu is provided on the side of the carrier layer and is joined to the carrier layer, which does not provide the barrier layer of plastic; wherein the further layer of thermoplastic plastic KSu and the layer of thermoplastic plastic KSa are made of LDPE. a. a carrier layer of paper or cardboard; b. a barrier layer of plastic joined to the carrier layer; c. an adhesion promoter layer; d. at least two layers (6, 7) of thermoplastic plastic KSa and KSw which are provided on the side of the barrier layer of plastic facing away from the carrier layer, wherein the at least two layers (6, 7) of thermoplastic plastic are made of a polyethylene; wherein from the at least two layers (6, 7) of thermoplastic plastic KSa and KSw the layer of thermoplastic KSw is furthest removed from the carrier layer, and wherein the layer of thermoplastic KSw is a plastics mixture of at least two plastics that comprises a polyethylene prepared by means of a metallocene as one of the at least two mixture components; wherein the plastic mixture comprises as one of the at least two mixture components 10 to 50 wt.%, based on the plastics mixture, of the polyethylene prepared by means of a metallocene; wherein the carrier layer has at least one hole; wherein the at least one hole is covered by the barrier layer of plastic and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw as composite layers; wherein no metal foil is provided between the carrier layer and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw; wherein at least one further layer of thermoplastic plastic KSu is provided on the side of the carrier layer and is joined to the carrier layer, which does not provide the barrier layer of plastic; wherein the further layer of thermoplastic plastic KSu and the layer of thermoplastic plastic KSa are made of LDPE. wherein from the at least two layers (6, 7) of thermoplastic plastic KSa and KSw the layer of thermoplastic KSw is furthest removed from the carrier layer, and wherein the layer of thermoplastic KSw is a plastics mixture of at least two plastics that comprises a polyethylene prepared by means of a metallocene as one of the at least two mixture components; wherein the plastic mixture comprises as one of the at least two mixture components 10 to 50 wt.%, based on the plastics mixture, of the polyethylene prepared by means of a metallocene; wherein the carrier layer has at least one hole; wherein the at least one hole is covered by the barrier layer of plastic and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw as composite layers; wherein no metal foil is provided between the carrier layer and the at least two layers (6, 7) of thermoplastic plastic KSa and KSw; wherein at least one further layer of thermoplastic plastic KSu is provided on the side of the carrier layer and is joined to the carrier layer, which does not provide the barrier layer of plastic; wherein the further layer of thermoplastic plastic KSu and the layer of thermoplastic plastic KSa are made of LDPE.