Loading patent…
AssigneeMitsubishi Polyester Film GmbH
InventorsMatthias Konrad, Bodo Kuhmann, David Ehrhardt, Thiemo Herbst, Holger Kliesch, Cynthia Bennett
Estimating the term…
The invention relates to a multilayer biaxially oriented polyester film comprising a base layer B, an amorphous outer layer A and a further outer layer C, where this polyester film is suitable for lamination with metal sheets. The invention in particular relates to a polyester film which comprises (based on the mass of polyester) from 2 to 15% by weight of isophthalate-derived units in the base layer and which comprises more than 19% by weight of isophthalate-derived units in the amorphous layer A, and which has a silane-based coating on the outer layer A. The invention further relates to a process for the production of these films.
A multilayer, biaxially oriented polyester film for metal sheet lamination, comprising a base layer B, an outer layer A and an outer layer C, wherein the outer layer A is amorphous, the base layer B and the outer layer C are crystalline, and where the crystalline base layer B comprises, based on the mass of polyester in the layer, at least 85% by weight of ethylene-terephthalate-derived units and from 2 to 15% by weight of ethylene-isophthalate-derived units and where the amorphous outer layer A comprises, based on the mass of polyester in the layer, more than 19% by weight of ethylene-isophthalate-derived units and no cycloaliphatic diol, and
A multilayer, biaxially oriented polyester film for metal sheet lamination comprising a base layer B, an outer layer A and an outer layer C,
A multilayer, biaxially oriented polyester film for metal sheet lamination comprising a base layer B, an outer layer A and an outer layer C, wherein the outer layer A is amorphous, the base layer B and the outer layer C are crystalline, and where the crystalline base layer B comprises 70 to 85% by weight of ethylene-terephthalate-derived units, based on the mass of polyester in the layer, from 15 to 30% by weight of butylene-terephthalate-derived units and the amorphous outer layer A comprises, based on the mass of polyester in the layer, more than 19% by weight of ethylene-isophthalate-derived units, and
Dependencies are inferred from the claim text.