90% of the die-cutting defects are caused by the improper fit between the die plate spring pad and the die template.

In the die-cutting workshop of the printing and packaging factory, defects such as broken lines, rough edges, incomplete cutting, and local indentation and deformation are the most common production flaws. When encountering these problems, most operators' first response is to grind the die-cutting molds and adjust the die-cutting pressure, but few people pay attention to the compatibility between the die-cutting plate spring pad and the die-cutting mold. After 22 years of deep involvement in the die-cutting industry, the technical team of Shenhua Printing Materials discovered during door-to-door services that over 90% of die-cutting defects were not caused by the die-cutting molds or equipment, but by the mismatch of parameters and arrangement between the die-cutting plate spring pad and the die-cutting mold. The die-cutting mold and the die-cutting plate spring pad have never been two independent components; they are a mutually supportive and integrated system. Only when both are precisely matched can a perfect die-cutting effect be achieved.

Many printing factories have fallen into a misconception: they believe that as long as the die-cutting mold is sharp enough and the quality of the spring pad is good enough, they can produce good products. However, in actual production, even if it is an imported high-end die-cutting mold, if it is paired with a high-quality Shenhua die-cutting plate spring pad, and the parameters do not match, various die-cutting defects will still occur. The height of the die-cutting mold's blade, the angle of the blade, the layout of the blade lines, and the type of the die-cutting mold, all have strict corresponding relationships with the thickness, hardness, width, and installation method of the die-cutting plate spring pad. Any parameter mismatch will directly affect the die-cutting effect.

The most basic and prone-to-error parameter is the matching of the blade height and the thickness of the spring pad. The core principle of die-cutting is to provide reverse supporting force for the blade through the rebound of the spring pad to achieve precise cutting of the substrate. The industry standard is that the natural height of the spring pad should be 0.1-0.2mm higher than the blade height. If the thickness of the spring pad is lower than the blade, it will cause insufficient support for the blade, resulting in incomplete cutting and rough edges, and accelerating the wear of the die-cutting mold; if the thickness of the spring pad is too high, it will excessively squeeze the substrate, causing paper line breakage, surface indentation deformation, and even damage to the blade edge of the die-cutting mold. Shenhua Printing Materials discovered during customer service that over 60% of the broken lines and incomplete cutting problems originated from this basic parameter mismatch. To address this issue, Shenhua Printing Materials has developed die-cutting plate spring pads of all thicknesses, ranging from 0.5mm to 5mm, with an accurate customization interval of 0.1mm. At the same time, they provide free die-cutting mold parameter matching services to customers to avoid the problem of basic parameter mismatch from the source.