Structure and Function of PCB dry film
Dec. 29, 2021
Dry film is a polymer compound. It can produce a polymerization reaction after ultraviolet irradiation to form a stable substance attached to the plat…
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Dec. 29, 2021
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Differences between brown oxidation and black oxidation in PCB manufacturing
Dec. 27, 2021
Brown oxidation and black oxidation in the PCB manufacturing process are to increase the adhesion between the original board and PP (prepreg).
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The explanation of electroplating line selection
Dec. 24, 2021
The hole wall copper is divided into several points, porthole, innerside & porthole of other side. If the hole copper is uneven, it will affect the in…
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Factors affecting the exposure speed of LDI exposure machine
Dec. 24, 2021
Compared with the traditional CCD semi-automatic exposure machine, LDI has many advantages. For example, it does not need film, which reduces the film…
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Advantages of Laser direct imaging LDI PCB exposure machine
Dec. 22, 2021
LDI exposure machine is easier to realize automatic operation, saves labor cost, greatly improves product quality and avoids defective rate.
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Photoresist etching in PCB production
Dec. 20, 2021
Photoresist etching is also used as another key step in the production of printed circuit boards. Protecting the copper required during etching requir…
