Shenhua Printing Plate Knife Plate Anti-adhesion and Anti-tear Protection Solution for Release Paper / Release Film Die-cutting Applications

Release paper and release film are widely used in non-stick labels, electronic accessories, medical dressings, etc. Their core feature is that the surface is coated with a release layer. During die-cutting, problems such as the detachment of the release layer, material adhesion and bulging of the cushion pad, and edge tearing may occur. The conventional cushion pads have insufficient anti-stick performance and the pressure transmission is hard, which leads to low die-cutting efficiency, high defective rate, and difficulty in meeting the die-cutting requirements of release-type materials. Deephua Printing Materials focuses on the die-cutting pain points of release materials and creates special knife plate cushion pads to achieve "no adhesion, no release layer, no tearing" efficient and precise die-cutting.

In terms of material optimization, ultra-low friction release-compatible materials are adopted, and nano anti-stick components are added. The friction coefficient of the cushion pad surface is controlled below 0.04, completely solving the problem of adhesion of release paper/membrane to the cushion pad, and avoiding the friction damage of the cushion pad to the release coating, ensuring that the release performance is not affected. The flexibility and rebound performance of the material are optimized, with the basic hardness controlled at Shore A 40-45, and the rebound rate reaching over 97%, and the compression permanent deformation rate being ≤ 3%. With a soft and uniform buffering pressure, edge tearing and delamination of the release paper/membrane caused by rigid impact are avoided.

In terms of structure and process compatibility, for the thin and stretchable characteristics of release paper/membrane, ultra-thin high-precision cushion pads ranging from 0.3 to 0.8 mm are launched. The thickness error is controlled within ±0.01 mm, ensuring uniform pressure throughout the entire plate, avoiding material stretching deformation. The seven-axis precision cutting process is adopted, with no burrs or sharp edges on the edge of the cushion pad, precise adhesion to the knife plate, and elimination of missed cutting and multiple cutting, avoiding edge burrs. Micro-drainage patterns are added on the surface to guide waste materials to quickly detach, increasing the waste removal efficiency by over 45%, while reducing the friction pollution of waste materials to the release layer. After a non-stick label enterprise applied this solution, the adhesion rate of release paper for die-cutting decreased from 11% to 0.1%, the tearing defective rate decreased to 0.08%, production efficiency increased by 35%, and it fully met the die-cutting requirements of release-type materials.