EASY ADHESIVE LAMINATED POLYESTER FILM

摘要

PURPOSE:To provide a polyester film excellent in surface flatness and adhesiveness and useful for a magnetic recording medium excellent in electromagnetic conversion charabteristics by effectively putting a recovered refuse film to practical use. CONSTITUTION:An easy adhesive laminated polyester film consists of a polyester layer (A) with a surface roughness Ra of 0.01-0.025mum. the polyester layers (B) with a surface roughness Ra of 0.01mum or less and a thickness of 0.1-13mum laminated on both surfaces of the layer (A) by a co-extrusion method and the easy adhesive resin layer (C) applied to at least one surface of the layers (B) using an aq. soln. of polyester with a secondary transition point of 40-160 deg.C. The layers (A), (B) are biaxially stretched and the layer (C) is stretched at least uniaxially.