Manufacturing method of optically laminated body with adhesive layer subjected to cutting processing achieving a convenient and cost-effective manufacturing process for an optically laminated body with an adhesive layer subjected to cutting processing and ensuring prevention of poor peeling of the surface protection film

The present invention provides a method for easily and inexpensively manufacturing an optically laminated body with an adhesive layer subjected to cutting processing, in which peeling defects of a surface protection film are suppressed. The manufacturing method of the optically laminated body with an adhesive layer subjected to cutting processing in this invention includes: stacking multiple optically laminated bodies with adhesive layers to form a workpiece; and using an end mill with a spiral blade to cut the peripheral surface of the workpiece. The optically laminated body with an adhesive layer comprises optical thin films, an adhesive layer, a separating member, and a surface protection film. The adhesive layer is located on one side of the optical thin films, the separating member is temporarily adhered to the adhesive layer in a peelable state configuration, and the surface protection film is temporarily adhered to the other side of the optical thin films in a peelable state. The manufacturing method o