SELECTION METHOD FOR SEPARATOR AND ADHESIVE SHEET USING SEPARATOR SELECTED BY SELECTION METHOD

摘要

Provided is a method for simply selecting a preferable separator for an adhesive sheet. This selection method includes: a step for obtaining an adhesive sheet that has at least an adhesive layer and a separator in which at least a material that forms an adhesive layer is bonded with the separator in a molten state; a step for producing an adhesive sheet for evaluation in which the separator is peeled from the adhesive sheet obtained and a separator for evaluation is bonded with the adhesive layer of the adhesive sheet; and a step for holding the adhesive sheet for evaluation between a pair of cushion materials and a pair of pressing plates, maintaining the press plate surface temperature at 140°C and pressure of 5 MPa for one minute and thereafter evaluating the peeling force for the separator for evaluation by 180° peeling tests with a peeling rate of 300 mm/min.