Shenhua Printing Plate Knife Pad: Copper Foil / Aluminum Foil Special Anti-Scratch and Anti-Oxidation Solution for Precision Die-cutting

Metal foil materials such as copper foil and aluminum foil are widely used in electronic circuits, battery electrode sheets, and packaging of precision electronic components. They are thin, have a smooth surface, are prone to scratching and oxidation. The core pain points during die-cutting are edge burrs, surface scratches, and oxidation layer damage. Conventional spring pads have high hardness and no anti-oxidation protection on the surface, which can easily cause the foil material to be scrapped and fail to meet the precise die-cutting requirements in the electronic field. Deephua Printing Materials focuses on the die-cutting pain points of metal foil materials and has developed special knife plate spring pads for copper foil/aluminum foil, achieving "no scratches, no burrs, anti-oxidation" high-precision die-cutting.

In terms of material optimization, an ultra-soft and low-friction anti-oxidation composite material is used, with the basic hardness controlled at Shore A 35-40. The ultimate soft buffering replaces the rigid impact to avoid the foil material surface being scratched by the interaction of the blade and the spring pad. The surface adopts a special anti-oxidation coating, which can reduce the friction between the foil material and the spring pad to less than 0.05, and form an invisible protective film to prevent the oxidation layer damage on the foil material surface during die-cutting, and avoid oxidation discoloration. The uniformity of material rebound is improved to over 97%, with a compression permanent deformation rate of ≤2%, ensuring uniform pressure transmission and avoiding excessive edge burrs and foil material damage.

In terms of structural and process compatibility, a 0.3-0.8mm ultra-thin high-precision spring pad is launched, with a thickness error controlled within ±0.01mm, suitable for ultra-thin die-cutting requirements of metal foil materials (0.01-0.1mm). The edge of the spring pad has no burrs or sharp edges, and is precisely matched with the knife plate, eliminating the problems of missed cutting and excessive cutting. In response to the characteristic of metal foil materials being prone to curling, micro anti-slip patterns are added to the surface of the spring pad to fix the foil material position during die-cutting, avoiding curling and displacement. After an electronic circuit enterprise applied this solution, the copper foil die-cutting scratch rate decreased from 8% to 0.08%, the burr defect rate decreased to 0.1%, and the oxidation scrap rate was almost zero, fully meeting the strict requirements of the precision electronic field.