FILM COMPOSITE, USE OF THE FILM COMPOSITE, AND CREPE FILM COMPRISING THE FILM COMPOSITE
A film composite including a first external layer and a second external layer, a first middle layer between the first and the second external layer, wherein the first and/or second external layer comprise components which comprise at least a polyolefin, a component selected from the group consisting of microbeads, polystyrene, and high-molecular-weight polyethylene, and a polymer having a melting point lower than that of other components of the first and/or second external layer.
1 . A film composite comprising:
a first external layer and a second external layer, and
a first middle layer between the first and the second external layer, wherein the first and/or second external layer comprise components which comprise at least:
a polyolefin,
a component selected from the group consisting of microbeads, polystyrene, and high-molecular-weight polyethylene, and
a polymer having a melting point lower than that of other components of the first and/or second external layer.
2 . The film composite according to claim 1 , further comprising a third middle layer between the first middle layer and the second external layer and a second middle layer between the third middle layer and the second external layer.
3 . The film composite according to claim 1 , wherein the polymer having a melting point lower than that of the other components of the first and/or second external layer is selected from ethylene-polyacrylate copolymers.
4 . The film composite according to claim 1 , wherein the polyolefin is at least one selected from the group consisting of polypropylene and polyethylene.
5 . The film composite according to claim 1 , wherein the first and/or second external layer mutually independently comprise at least one color pigment.
6 . The film composite according to claim 2 , wherein the third middle layer comprises a material selected from the group consisting of ethylene-vinyl alcohol copolymers, polyvinyl alcohols, polyamides, copolyamides, and mixtures thereof.
7 . The film composite according to claim 2 , wherein the first and the second middle layer comprise a material selected from the group consisting of thermoplastic polymers, organic acids, organic anhydrides, mixtures thereof and compounds thereof.
8 . The film composite according to claim 1 , wherein the first external layer comprises microbeads or high-molecular-weight polyethylene.
9 . The film composite according to claim 1 , wherein the first external layer has a first surface which faces away from the first middle layer and on which uneven areas are present.
10 . The film composite according to claim 1 , wherein the first and the second external layer comprise polystyrene.
11 . The film composite according to claim 10 , wherein the first external layer has a first surface facing away from the first middle layer and has a surface structure, and the second external layer has a second surface facing away from the first middle layer and has a surface structure.
12 . A crepe film comprising a film composite according to claim 1 , having parallel corrugations.
13 . The crepe film according to claim 12 , where the first external layer and the second external layer of the film composite respectively have, on surfaces facing from the first middle layer, subregions in physical contact with one another.
14 . The crepe film according to claim 12 , having a compression factor of >60%.