The etching quality and the early problems：The,etching,quality,and,the,ea
The basic requirements on the etching quality is able to resist layer except the following all the copper layer completely removed, check this. Strictly speaking, if be precisely defined, then etching quality must be consistent and side comprises a conductor line width degree of corrosion. Due to the inherent characteristics of the solution, not only about the downward and to produce etching effect, so the lateral erosion is almost inevitable, but the effective control of the etching time and potion mixing will reduce the lateral erosion. Lateral inhibition is an etching parameters is often brought up for discussion, it is defined as the side etching and etch depth width ratio, called the etching factor.
In the printed circuit industry changes, its scope is very broad, from 1:1 to 1:5. Obviously, the side etching or low etching factor is the most satisfactory. Structure etching device and etching solution with different components will influence on the etching factor or lateral erosion degree, or with the optimistic words, can control the.
Can reduce the lateral erosion degree with some additives. The chemical composition of these additives belonging to the general development of commercial secrets, their respective is not revealed to the outside world. As for the etching equipment problems, you can consult our customer service. In many ways, the etching quality, long before entering the etching machine printed circuit board is already exists. Because there exists very close internal relationship between printed circuit for processing the various processes or process, no one is not affected by other processes and does not affect the other process. Many has been identified as the etching quality problems, in fact to the film even process more previous already exists. For the etching process of outer graphics, because it reflected the Fall Creek is like than most printed board process are highlighted, so many problems finally reflect on it. At the same time, this is also due to the etching is from the film, a long series of process of photographic began in the last ring, then, outer graphics transfer success. Link more problems, the greater the possibility of. This can be regarded as a very special aspect in the production process of printed circuit
