| 摘要 |
PROBLEM TO BE SOLVED: To produce an annular belt almost uniform in thickness and high in tensile strength by bonding both ends of a plastic film. SOLUTION: A sheet-like plastic film is formed into an annular shape and both ends thereof are bonded to produce a belt. In this method, first and second plastic films 1, 3 are superposed one upon another to be temporarily bonded in a peelable manner by an adhesive 2 to form a laminated film 4 having one end (LT) and other end (RT) and the end part of the first plastic film 1a is peeled at one end LT of the laminated film and the end part of the second plastic film 3a is peeled at the other end RT of the laminated film and both ends of the laminated film 4a are abutted to finally bond the end parts of the first and second plastic films 1a, 3a by the adhesive 2a. |
