COMPOSITE FILM FOR INTERIOR FINISHING MATERIAL, COMPOSITE SHEET FOR INTERIOR FINISHING MATERIAL USING THE SAME, AND LAMINATE

摘要

PROBLEM TO BE SOLVED: To provide chemical resistance, stain resistance and satisfactory adhesive properties by laminating a heat resistant polyalkylene terephthalate polyester resin layer having a specific temperature or higher and a polybutylene terephthalate polyester resin layer containing a specific amount of polycarbonate and having a specific range of a melting point. ;SOLUTION: The composite film for an interior finishing material is obtained by laminating a heat resistant polyalkylene terephthalate polyester resin layer having a melting point of 220°C or higher, and a polybutylene terephthalate polyester layer having a melting point of 150 to 215°C. The polybutylene terephthalate resin layer contains polycarbonate resin of 5 to 50 wt.% for the purpose of improving durability such as water resistance and chemical resistance. If its adding amount is less than 5 wt.%, adding effect cannot be obtained. If it exceeds 50 wt.%, thermal adhesive properties are lowered. A thickness of the polybutylene terephthalate resin layer is 5 μm or more and 20 to 80% of the thickness of the entire film.;COPYRIGHT: (C)1998,JPO