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Die-cutting performance is a decisive processing indicator for customized packaging paper, carton board and creative printed paper. In high-speed die-cutting production, many paper products suffer from common processing defects such as irregular cutting edges, paper fiber burrs, surface delamination, crease bursting and incomplete waste breaking. These problems are mainly caused by unreasonable fiber toughness matching, unstable surface bonding strength, improper internal stress distribution and uneven paper density. Poor die-cutting adaptability greatly increases the defective rate of finished products, reduces die-cutting machine operating speed, and requires repeated trimming and manual sorting, which seriously affects production efficiency and product yield. For high-precision gift boxes, personalized packaging and fine printed products, unqualified die-cutting effect will directly reduce product appearance grade and market competitiveness. Most traditional improvement methods simply adjust die-cutting pressure or speed, which only alleviate surface defects temporarily and cannot optimize the inherent physical matching performance of paper. Some toughening treatments will make paper too soft or too brittle, further deteriorating die-cutting accuracy. Shandong Ludao Energy Technology Co., Ltd. launches professional paper die-cutting performance optimization solutions. By balancing paper surface hardness and internal fiber toughness, stabilizing internal stress structure and homogenizing overall density, we enable the paper to achieve clean, flat and accurate cutting effect during high-speed die-cutting. The solution eliminates edge burrs, delamination and crease cracking defects, improves waste separation efficiency, adapts fully automatic high-speed die-cutting production lines, effectively reduces manual secondary processing costs, and stabilizes the finished product qualification rate of customized packaging paper.