Flatness is a core indicator that elevates plastic sheets and nonwoven fabrics from "usable" to "premium quality," directly impacting product appearance, processing performance, and user experience. The key to controlling it lies in the hot Mill roller from Anhui Jwell: The high-rigidity alloy steel body achieves "zero deformation" under pressure, eliminating thickness tolerances. Precision temperature control design ensures minimal temperature difference across the roller surface, eliminating internal stress and preventing warping. The optimized structural design adapts to thin materials and embossing processes, guaranteeing flatness at the source.