| 摘要 |
PURPOSE: A wide width casting belt, a manufacturing method, and a wide film are provided to manufacture a film with wide width without increasing elongation ratio. CONSTITUTION: A wide width casting belt comprises a center belt(110), a left side belt(120), and a right side belt(130). The left side belt includes a left side joint formed between the center belts. The right end part of the left side belt is extended to center of the left end along the longitudinal direction. The right side belt makes a right side seam to form between the center belt and the right side belt. The left end part of the right side belt is extended to center of the right end along the longitudinal direction. |
