Shenhua Printing Die Plate Spring Pad: Breaking through the barriers of industrial die-cutting technology, achieving domestic substitution for high-end scenarios

With the rapid development of new energy, information technology, and the automotive industry, die-cutting technology has already transcended the boundaries of traditional printing and packaging industries and become an indispensable core process in the field of precision industrial manufacturing. The precise forming of products such as lithium battery separators, optical protective films, flexible circuit boards, and automotive interior components all impose unprecedentedly strict requirements on die-cutting accessory materials. And the die-cutting tooling spring pad, as the core accessory component of die-cutting technology, its performance directly determines the precision and production stability of precise industrial die-cutting. For a long time, the high-end industrial die-cutting spring pad market has been monopolized by foreign brands, and domestic enterprises have faced many difficulties such as high technical barriers, high certification thresholds, and slow customization response. After more than twenty years of deep involvement in the printing equipment field, Shenhua Printing has taken technological innovation as the core, broken through multiple technical barriers of high-end industrial die-cutting spring pads, and created a full series of die-cutting tooling spring pad products suitable for high-end industrial scenarios such as new energy, electronics, and automobiles, achieving a comprehensive breakthrough in import substitution and becoming the core force of domestic precision industrial die-cutting field's domestic components.

The general-purpose die-cutting tooling spring pads used in traditional printing and packaging have long been unable to meet the strict requirements of emerging industrial die-cutting scenarios. In the lithium battery field of new energy, the die-cutting of lithium battery separators, tabs, and insulation pads requires the spring pad to be free of debris, dust, and silicon precipitation, even micro-micron-sized glue debris impurities can cause internal short circuits in lithium batteries and trigger thermal runaway safety accidents; at the same time, it needs to have permanent anti-static performance to avoid static adsorption of dust and damage to the substrate during die-cutting, with a thickness tolerance of ±0.03mm to ensure "cut through the separator without damaging the copper-aluminum foil substrate". In the electronic precision die-cutting field, the die-cutting of optical protective films, conductive adhesives, and heat dissipation graphite sheets requires the spring pad to have ultra-high hardness, ultra-low friction, and no scratch characteristics, and be compatible with ultra-thin materials of 0.05mm and below for micro-micron-level precise die-cutting. In the automotive interior field, the die-cutting of large-sized sound insulation cotton, leather, and lightweight composite materials requires the spring pad to have high impact resistance, uniform width, and high-frequency fatigue resistance, and to maintain consistent rebound force within a 2-meter-wide range.

These strict performance requirements have formed extremely high technical barriers. For a long time, domestic high-end industrial die-cutting customers have had to rely on imported brand spring pads, not only with high procurement costs, but also facing long delivery times, slow customization response, and disconnected technical services, seriously restricting the development of domestic high-end manufacturing enterprises. Shenhua Printing deeply understood the domestic industrial manufacturing's demand for domestic component support. As early as many years ago, it initiated specialized research and development of high-end industrial die-cutting spring pads, forming a R&D team composed of experts in polymer materials, precision manufacturing, and industrial die-cutting technology, and through thousands of times of formula adjustment and working condition tests, overcame multiple industry core technical problems such as "permanent anti-static formula, clean no precipitation system, ultra-thin high-precision forming", successfully developing die-cutting tooling spring pad products suitable for various high-end industrial scenarios.

In the core formula system, Shenhua Printing achieved full-dimensional customization breakthroughs based on the needs of different industrial scenarios. For the lithium battery field of new energy, it developed a permanent anti-static clean-type spring pad, with a surface resistance that can be stably controlled between 10^6-10^9Ω, without silicon precipitation, debris, or dust, passing the 10,000-level clean workshop certification, fully adapting to the clean requirements of lithium battery production, and at the same time, it can withstand electrolyte corrosion, without swelling, deformation, or performance degradation; for the electronic precision die-cutting field, it created an ultra-hard high-precision type spring pad, with a hardness of up to 85 Shore degrees, a thickness tolerance of ±0.