Method for producing functional-substance thin film material, functional-substance thin film material, and laminate thereof

A method for producing a functional-substance thin film material in which a functional-substance thin film material is formed by a functional substance being laminated in a thin film form onto a surface of a polypropylene film on which a non-silicone adhesive layer is not laminated, the polypropylene film being releasably laminated onto a surface of a polyethylene terephthalate film with the non-silicone adhesive layer therebetween, and a finishing treatment is subsequently performed on the functional substance in the thin film form by heating within a temperature range of 100° C. to 130° C., the method characterized in that:

• an acrylic-based pressure-sensitive adhesive constitutes the non-silicone adhesive layer, and the polypropylene film is laminated onto the polyethylene terephthalate film by a dry lamination method using the acrylic-based pressure-sensitive adhesive, and
• a flat functional-substance thin film material is formed wherein a strength of adhesion by the non-silicone adhesive layer is set in advance to a strength at which thermal deformation does not occur in the polypropylene film during heating to a heating temperature of 100° C. to 130° C. for finishing the functional substance that is in the thin film form and laminated onto the polypropylene film to form the functional substance thin film material, followed by the finishing treatment, wherein the strength of adhesion of the non-silicone layer is between 0.05 N/25 mm and 10 N/25 mm.