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Crease recovery performance is a key advanced index for high-grade packaging paper and gift printing paper. In the process of manual folding, automatic creasing, logistics extrusion and stacked storage, paper is prone to permanent creases, indentation deformation and folded dead lines. For recycled pulp paper and low-density cultural paper, fiber resilience is weak, and folded creases cannot rebound naturally, which directly damages paper surface flatness, ruins printed patterns, and makes finished packaging boxes lose three-dimensional aesthetic effect. Many paper factories add softening agents simply to enhance flexibility, which reduces paper surface stiffness, causes easy deformation of carton shape, and cannot realize dual balance of crease resilience and structural hardness. Permanent crease defects greatly increase finished product rejection rate in post-press processing, bring extra processing loss and economic loss to downstream packaging enterprises. Shandong Ludao Energy Technology Co., Ltd. launches professional paper crease recovery optimization solutions. By building elastic fiber cross-linking structure inside paper, enhancing micro-fiber resilience, and optimizing surface stress dispersion performance, the paper can rebound quickly after creasing and folding without leaving permanent dead lines. The solution keeps original paper stiffness and shaping performance, does not affect printing and laminating effect, reduces crease-induced defective products, improves folding processing adaptability, and upgrades the appearance grade of high-end customized packaging paper.