FILM JOINT, SPLICING TAPE FOR FORMING THE FILM JOINT, AND METHOD FOR JOINTING FILMS BY THE SPLICING TAPE

摘要

PURPOSE: A film joint, a splicing tape for forming the film joint, and a method for joining a film using the splicing tape are provided to prevent an adhesive from leaking out because a punching work is not necessary. CONSTITUTION: A film joint comprises sprocket holes(12,14), a core sheet(2) of a resin material, and first adhesive layers. The sprocket holes are formed in two films. The film joint has through holes(122,144) which are bigger than the sprocket holes. The first adhesive layers are formed on one surface of the core sheet, and are attached on one surface or both surfaces of the films in order not to block the sprocket holes. The core sheet is composed of a polyimide agent.