I am manufacturing a plastic product with a texture on one side only using either PVC / PC / or Vinyl film approx 0.40mm thickness. I am running the plastic sheets thought an embossing mill with a knurling pattern on one side. However, when the plastic comes out of the rolling mill, it curls. It is required that the final product being debossed to be flat rather than curled. Do ou have any suggestions, please help?