Shenhua Printing Material Knife Plate Spring Pad: Special Anti-offset and Stable Discharge Solution for High-speed Die-cutting of Special-shaped Labels

The high-speed die-cutting of special-shaped labels (such as arc-shaped labels, irregularly shaped stickers, and cultural and creative special-shaped labels) is a core scenario in large-scale label production. The core pain points of this process are the easy deviation of label special-shaped contours, the clogging of waste materials, the insufficient fatigue resistance of the spring pads, the non-compact adhesion of conventional spring pads, the poor waste removal efficiency, resulting in deviation in die-cutting accuracy, frequent production stops, and difficulty in adapting to the high-speed production rhythm. Deephua Printing Materials focuses on the pain points of high-speed die-cutting of special-shaped labels and develops special knife plate spring pads for anti-deviation and stable waste removal, achieving efficient large-scale production of special-shaped labels.

In the anti-deviation design, a 1:1 precise fitting structure for special-shaped labels is adopted. According to the contour dimensions of the special-shaped labels, the shape of the spring pad is precisely customized to ensure full and tight adhesion between the spring pad and the knife plate, without any gaps, avoiding label deviation during die-cutting. The back adhesive of the spring pad uses a high-attachment force special glue, which does not leak glue or slide under high-speed die-cutting conditions, maintaining a stable adhesion throughout the process. At the same time, micro anti-slip patterns are added to the surface of the spring pad to fix the label position during die-cutting, further preventing deviation. The all-coverage equal-density forming process is adopted, with a thickness error controlled within ±0.01mm, and the hardness fluctuation of the same layout is ≤1 Shore A, ensuring uniform pressure transmission and avoiding label deformation caused by excessive local pressure.

In terms of fatigue resistance and waste removal optimization, the spring pad uses high-toughness anti-fatigue composite material, with anti-fatigue additives added, and the number of compression fatigue times exceeds 950,000 times, with the elastic attenuation rate of the spring pad under long-term high-speed die-cutting controlled within 3% or less, extending the service life of the spring pad. The surface is treated with low-friction matte processing to reduce friction between the label and the spring pad, and additional special anti-disposal drainage patterns are added to guide the special-shaped waste materials to quickly separate and avoid clogging. The waste removal efficiency is increased by more than 40%. After applying this solution, the deviation rate of special-shaped label high-speed die-cutting in a certain label printing factory decreased from 8% to 0.2%, the frequency of waste removal clogging and production stoppage decreased by 90%, production efficiency increased by 35%, and the stability of die-cutting accuracy was significantly improved.