Machine Direction Curl is a phenomenon that develops sometime after a finished laminate is allowed to relax. The root causes of this eventual curl are due primarily to the recovering of strain, in either or both Strips A and B, which were stress induced prior to and during the laminating process.

This paper reviews the Laminating process parameters that effect the development of Machine Direction Curl. It then presents Soft Roll Drive configurations and empirical procedures to provide effective influence in correcting for Machine Direction Curl.