Shenhua Printing Plate Knife Pad: Special Noise Control Plan for Die-cutting, Facilitating Environmental Compliance in the Workshop
The high-frequency noise in the die-cutting workshop is a common hidden pain point in the industry. Among them, the impact between the die-cutting plate spring pad and the die-cutting plate, the friction between the spring pad rebound and the spring pad, and the collision between waste materials and the spring pad are some of the core sources of noise. Long-term high noise not only affects the physical and mental health of the operators but may also fail to meet the environmental noise standards of the workshop. Shenhua Printing Materials focuses on the pain point of noise control in die-cutting and optimizes the material with vibration damping and structural noise reduction. They have developed a noise-reducing dedicated die-cutting plate spring pad, achieving a dual improvement in noise and performance, and helping enterprises comply with environmental protection and noise standards in their workshops.
In the research and development of noise-reducing materials, Shenhua Printing Materials innovatively adopts a blended material of damping rubber and elastomer. The damping rubber has excellent vibration damping and noise reduction performance, which can effectively absorb the impact energy between the spring pad and the die-cutting plate during die-cutting, reducing impact noise. At the same time, the friction coefficient of the material is optimized to further reduce the friction noise between the spring pad rebound and the die-cutting plate and materials. Compared with conventional spring pads, the noise-reducing spring pads can reduce die-cutting noise by 15-25 decibels, keeping the workshop noise below 85 decibels (compliant with the noise hygiene standards for industrial enterprises). In addition, the material itself has good elasticity and wear resistance, allowing for noise reduction without sacrificing the core die-cutting performance of the spring pad, with the rebound rate still remaining above 95%.
In the design of structural noise reduction, the surface of the spring pad adopts a circular buffer groove structure, with the grooves evenly distributed, which can disperse the die-cutting impact stress and reduce sharp noises generated by local impacts. The edges of the spring pad are treated with a rounded transition, avoiding sharp edges of the waste materials colliding with the spring pad and generating noise, and reducing the wear of the spring pad itself. For different die-cutting equipment noise differences, differentiated adaptation solutions are provided: for flat-press-flat die-cutting machines, the noise is mainly impact sound, and high-damping spring pads are adapted; for round-press-round die-cutting machines, the noise is mainly friction sound, and low-friction noise-reducing spring pads are adapted.
After applying this noise-reducing solution in a medium-sized packaging workshop, the noise in the die-cutting area decreased from 98 decibels to 78 decibels, fully meeting the environmental protection compliance requirements. Operators reported a significant reduction in noise discomfort, and the service life of the spring pad was extended by 20% compared to conventional products, achieving the triple value of "noise reduction, efficiency increase, and personnel protection", becoming the core supporting material for the environmental upgrade of the workshop.