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A multilayer biaxially oriented, polyolefin film consisting of a base layer, at least one first intermediate layer and a first cover layer that is applied to said intermediate layer. The first intermediate layer is made of a terpolymer consisting of three different monomers (a), (b) and (c): whereby

A multilayer biaxially oriented, polyolefin film consisting of a base layer, at least one first intermediate layer and a first cover layer that is applied to said intermediate layer. The first intermediate layer is made of a terpolymer consisting of three different monomers (a), (b) and (c): whereby (a) is an olefin, (b) is an unsaturated carboxylic acid or esters thereof, and (c) is an unsaturated carboxylic acid or carboxylic acid ester, which is different from (b), or is a carboxylic acid anhydride. In addition, the first cover layer contains a copolymer, and a top layer comprising a copolymer of an olefin, and an unsaturated carboxylic acid or esters thereof, and the first cover layer additionally contains an additive.

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1. Multilayered, biaxially oriented polyolefin film comprising a base layer and at least one first interlayer and a first top layer applied to this interlayer, characterized in that this first interlayer is built up from a terpolymer which consists of three different monomers (a), (b) and (c), where

1. Multilayered, biaxially oriented polyolefin film comprising a base layer and at least one first interlayer and a first top layer applied to this interlayer, characterized in that this first interlayer is built up from a terpolymer which consists of three different monomers (a), (b) and (c), where (a) is an olefin and (b) is an unsaturated carboxylic acid or an ester thereof and (c) is an unsaturated carboxylic acid or carboxylic acid ester which is different from (b) or a carboxylic anhydride, and the first top layer comprises a copolymer which consists of an olefin and an unsaturated carboxylic acid or an ester thereof; and this first top layer additionally comprises an additive.2. Film according to claim 1, characterized in that the additive is present in the top layer in an amount of up to 30% by weight, and the copolymer is present in the top layer in an amount of at least 70% by weight; based on the weight of the top layer.3. Film according to claim 1, characterized in that the additive is polyethylene, hydrocarbon resin, EBA, EVA, EMA, propylene homopolymer, copolymers or terpolymers comprising ethylene, propylene and/or butylene units and/or wax.4. Film according to claim 3, characterized in that the copolymer or terpolymer comprises from 75 to 92% by weight of propylene units.5. Film according to claim 3, characterized in that the wax has a mean molecular weight Mn (number average) Mn of from 200 to 5000, and the wax has a melting point of from 70 to 150° C.6. Film according to claim 3, characterized in that the polyethylene is a linear or branched polyethylene.7. Film according to claim 3, characterized in that the copolymer or terpolymer comprises at least 50% by weight, of propylene units.8. Film according to claim 7, characterized in that the copolymer has a melting point of 40-120° C. and a melt flow index of 0.1-20 g/10 mm (at 90° C. and 21.6 N).9. Film according to claim 1, characterized in that the copolymer is built up from ethylene, propylene or butene, hexene or octene units and acrylic acid, methacrylic acid, aciylate or methacrylate units.10. Film according to claim 9 characterized in that the copolymer consists of at least 60-97% by weight of ethylene units and at most 3-40% by weight of acrylate or methacrylate units.11. Film according to claim 1, characterized in that the first top layer additionally comprises an inorganic or organic antiblocking agent.12. Film according to claim 11, wherein said antiblocking agent is SiO2, CaCO3?, polycarbonate, polyamides, polyesters, crosslinked silicone oil or polymethyl methacrylate and the first top layer comprises from 1 to 4% by weight of antiblocking agent.13. Film according to claim 11, characterized in that the first top layer comprises from 0.1 to 5% by weight, of antiblocking agent.14. Film according to claim 11, characterized in that the anti-blocking agent has a mean particle size of from 1 to 6 μm.15. Film according to claim 1, wherein the first top layer has a thickness of from 1 to 5 μm.16. Film according to claim 1, characterized in that the surface of the first top layer has been surface-treated by means of a corona, flame or plasma.17. Film according to claim 1, characterized in that the monomers (a), (b) and (c) are selected from the groups(a) ethylene, propylene, butene, hexene or octene (b) acrylic acid, methacrylic acid, acrylate or methacrylate (c) glycidyl methacrylate or maleic anhydride. 18. Film according to claim 17, characterized in that the terpolymer consists of at least 65-96% by weight of ethylene units and at most 3-34% by weight of acrylate or methacrylate units and 1-10% by weight of glycidyl methacrylate or maleic anhydride units.19. Film according to claim 17, characterized in that the terpolymer has a melting point of 40-120° C. and a melt flow index of 0.1-20 g/10 min (at 190° C. and 21.6 N).20. Film according to claim 1, characterized in that the interlayer comprises an additive in an amount of from 0.5 to 30% by weight.21. Film according to claim 20, characterized in that the additive is a wax and/or polyethylene.22. Film according to claim 1, wherein the first interlayer has a thickness of from 1 to 15 μm.23. Film according to claim 1, characterized in that the film has a second polyolefinic top layer on the opposite surface of the base layer.24. Film according to claim 23, characterized in that the polyolefin of the second top layer comprises a propylene homopolymer and/or a copolymer comprising ethylene, propylene or butylene units and/or a terpolymer comprising ethylene, propylene and butylene units.25. Film according to claim 23, characterized in that a second polyolefinic interlayer has additionally been applied beneath the second top layer.26. Film according to claim 1, characterized in that the base layer is transparent or opaque or white and opaque.27. Film according to claim 1, characterized in that the thickness of the film is from 15 to 150 μm and where the base layer makes up at least 40% of the total thickness.28. Film according to claim 1, characterized in that the base layer comprises antistatic.29. Film according to claim 1, characterized in that the additive is present in the top layer from 0.5 to 10% by weight, and the copolymer is present in the top layer in an amount of 90-99.5% based on the weight of the top layer and the additive is a polyethylene wax, a macrocrystalline paraffin or a microcrystalline wax (microwax).30. Film according to claim 29, characterized in that the wax has a mean molecular weight Mn (number average) Mn of from 400 to 2000, and the wax has a melting point of from 70 to 150° C. and the polyethylene is a HDPE, LDPE, LLDPE, MDPE or VLDPE.31. Film according to claim 1, characterized in that the thickness of the film is from 25 to 90 μm and where the base layer makes up at least 40% of the total thickness and the base layer comprises a tertiary aliphatic amine.32. The film as claimed in claim 1, wherein the film is a label film.33. A process of labelling which comprises placing the film as claimed in claim 32 on a container without additional adhesive being used during the labelling.34. The process as claimed in claim 33, wherein the container is made from PS, PP, PE, PVC, PET, glass or metal.35. The process as claimed in claim 34, wherein the container is made from aluminum or tin plate.36. The process as claimed in claim 35, wherein the container is labelled by the in-mould, thermolabelling, patch labelling or wrap-around labelling method.37. The film as claimed in claim 1, wherein the film is a lid film or packaging film.38. The film as claimed in claim 37, wherein the film is a packaging film for pulverulent pack contents.39. The film as claimed in claim 38, wherein the film is heat-sealed for the production of packaging, and the heat-sealing is carried out at a temperature of from 70 to 100° C.40. The film as claimed in claim 38, wherein the surface of the first top layer is heat-sealed to PVDC or acrylate lacquer.41. The film as claimed in claim 1, wherein the film is a lamination film.42. A process to laminate a film which comprises laminating the lamination film as claimed in claim 41 to paper, wood, metal or thermoplastic films.43. The process as claimed in claim 42, wherein the metal is aluminium.44. The film according to claim 1, wherein the film is used in printing, metallization or coatings.45. The film according to claim 1, wherein the film is used in cold-sealing adhesive coatings.46. Process for the production of a polyolefin film according to claim 1 by the coextrusion process, in which the melts corresponding to the individual layers of the film are coextruded simultaneously and jointly through a fiat-film die, the resultant film is, for solidification, taken off on one or more roll(s), the multilayered film is subsequently stretched, and the stretched film is heat-set, characterized in that the longitudinal stretching of the film is carried out by means of heated rolls, and the temperature during the longitudinal stretching is varied in a range of 10° C. above or below the melting point of the copolymer I of the first top layer.47. Multilayered, biaxially oriented polyolefin film comprising a base layer and at least one first interlayer and a first top layer applied to this interlayer, characterized in that this first interlayer is built up from a terpolymer which consists of three different monomers (a), (b) and (c), where (a) is an olefin and (b) is an unsaturated carboxylic acid or an ester thereof and (c) is a carboxylic acid ester which is different from (b) or a carboxylic anhydride, and the first top layer comprises a copolymer which consists of an olefin and an unsaturated carboxylic acid or esters thereof, and this first top layer additionally comprises an additive in an amount of from 30 to 50% by weight, where the data in % by weight arc in each case based on the weight of the top layer.48. The film as claimed in claim 47, wherein the film is a protective film.49. The film as claimed in claim 48, wherein the film is protecting a glass, metal, ceramic, plastic or wood surface.