METHOD FOR PREPARING BUFFER FILM USING PE FILM HAVING DOUBLE STRUCTURE WITH DIFFERENT INNER AND OUTER LAYERS PHYSICAL PROPERTIES

摘要

The present invention relates to a method for preparing a buffer film using a PE film having a double structure of different inner and outer layers with physical properties. The present invention provides a method for preparing a buffer film using a PE film having a double structure of different inner and outer layers with physical properties, the method comprising: a first step for blending an air cap sheet composition, and an inner layer composition and an outer layer composition of a support film having a double structure; a second step for, upon the completion of the first step, respectively molding an air cap sheet, and a support film having a double structure obtained by binding an inner layer and an outer layer formed by extrusion of the inner layer composition and the outer layer composition, using the respective compositions according the respective processes; and a third step for, after the second step, thermally binding the support film to the air cap sheet to bind the films to each other, wherein the inner layer is favorably thermally attached to the air cap sheet, and the outer layer has heat resistance, creep resistance, and impact resistance for optimization of the thermal attachment with the air cap sheet.;COPYRIGHT KIPO 2016