Small-shrinkage base material film shaping device

The utility model relates to a small-shrinkage-rate base material film shaping device which comprises an outer shell, the outer shell is in a cuboid shell shape, an outlet is formed in the top of the outer shell, an inlet is formed in the front end of the lower portion of the outer shell, and an upper flattening roller is transversely arranged above the outlet of the outer shell. A lower flattening roller is transversely arranged at the front end of an inlet of the shell, a lower guide roller is transversely arranged on the lower portion in the shell, the upper flattening roller, the lower flattening roller and the lower guide roller are all rotationally connected with the shell, and a plurality of infrared heating pipes are longitudinally arranged on the inner wall of the front end of the shell in an array mode. The utility model aims to solve or at least alleviate the problem that the width and the thickness of a thin film are greatly changed due to temperature fluctuation when the shrinkage rate of a PVDC