A composite made of I a prepreg made of a solid mixture of a reactive synthetic resin and a reinforcing material in the form of textile or of fibres and optionally conventional additives in the form of an optionally rolled-up, continuous web and II a separable release film comprising a multilayer structure made of a) directly adjoining the prepreg web, a release layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, a waxy compound as release additive, and optionally conventional other additives and auxiliaries, b) optionally an adhesion-promoter layer, c) a layer composed of at least one thermoplastic polyamide homo- or copolymer, d) optionally an adhesion-promoter layer, e) a release layer which is composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, and which has a release coating based on a hardened polysiloxane, or as alternative to the layer e) a part-laminate made of e') a layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, f) a lamination adhesive layer, and g) a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester and one waxy compound as release additive, and optionally conventional other additives and auxiliaries, or g') a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester, and which has a release coating based on a cured polysiloxane as alternative to the layer g) of the part-laminate. I a prepreg made of a solid mixture of a reactive synthetic resin and a reinforcing material in the form of textile or of fibres and optionally conventional additives in the form of an optionally rolled-up, continuous web and II a separable release film comprising a multilayer structure made of a) directly adjoining the prepreg web, a release layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, a waxy compound as release additive, and optionally conventional other additives and auxiliaries, b) optionally an adhesion-promoter layer, c) a layer composed of at least one thermoplastic polyamide homo- or copolymer, d) optionally an adhesion-promoter layer, e) a release layer which is composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, and which has a release coating based on a hardened polysiloxane, or as alternative to the layer e) a part-laminate made of e') a layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, f) a lamination adhesive layer, and g) a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester and one waxy compound as release additive, and optionally conventional other additives and auxiliaries, or g') a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester, and which has a release coating based on a cured polysiloxane as alternative to the layer g) of the part-laminate. a) directly adjoining the prepreg web, a release layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, a waxy compound as release additive, and optionally conventional other additives and auxiliaries, b) optionally an adhesion-promoter layer, c) a layer composed of at least one thermoplastic polyamide homo- or copolymer, d) optionally an adhesion-promoter layer, e) a release layer which is composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, and which has a release coating based on a hardened polysiloxane, or as alternative to the layer e) a part-laminate made of e') a layer composed of at least one thermoplastic homo- or copolymer of α,β-unsaturated olefins preferably having from 2 to 10 carbon atoms, particularly preferably of α,β-unsaturated olefins having at least 3 carbon atoms, f) a lamination adhesive layer, and g) a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester and one waxy compound as release additive, and optionally conventional other additives and auxiliaries, or g') a preferably biaxially stretched release layer which is composed of at least one thermoplastic polyester, and which has a release coating based on a cured polysiloxane as alternative to the layer g) of the part-laminate.