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BIAXIALLY ORIENTED SATURATED POLYESTER-BASED FILM WHOSE SURFACE IS PLASMA TREATED SO AS TO BE HOT MELT WELDED AT 100-200 DEG.C, ITS PREPARATION METHOD, LAYERED PRODUCT USING THE FILM, AND ITS PREPARATION METHOD
BIAXIALLY ORIENTED SATURATED POLYESTER-BASED FILM WHOSE SURFACE IS PLASMA TREATED SO AS TO BE HOT MELT WELDED AT 100-200 DEG.C, ITS PREPARATION METHOD, LAYERED PRODUCT USING THE FILM, AND ITS PREPARATION METHOD
PURPOSE: A biaxially oriented saturated polyester-based film, its preparation method, a layered product using the film, and its preparation method are provided, to allow an identical kind of films or a different kind of plastic films or metal foil to be formed into a layered product easily by hot press or hot roll. CONSTITUTION: The biaxially oriented saturated polyester-based film is to be hot melt welded at a heating temperature of 100-200 deg.C throughout the plasma treating of the surface of a film. The plasma treatment is carried out by using a low temperature plasma apparatus of internal electrode method. Preferably the composition ratio of an oxygen atom and a carbon atom (O/C) at the surface of a film is greater than the theoretical ratio in a range of 2.5-20 %. The layered product comprises the biaxially oriented saturated polyester-based film and a different material adhered to the film by hot melt welding.
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