Method for improving solder resist oil leakage of PCB

Abstract

The invention relates to a method for improving solder resist oil leakage of a PCB, which comprises the steps of ink preparation, PCB processing, hole plugging and oil printing, pre-baking, film manufacturing, alignment exposure and thermocuring. The method solves the problem of solder resist oil leakage of the PCB by controlling various parameters.

Description

technical field [0001] The invention relates to the field of PCB board production, in particular to a method for improving PCB board solder resistance and oil leakage. Background technique [0002] In the existing production process of circuit boards, for PCB boards that must be protected against soldering and plugged through holes, for some special structures, such as the case where the copper surface of the solder mask layer has a single-sided window, according to the normal Process flow production, after the development of the position, it is easy to appear the abnormal phenomenon of anti-soldering and oil leakage, which will affect the appearance. [0003] Nowadays, the PCB industry has more and more strict requirements on the appearance of circuit boards. For the particularity of one-sided window opening, which is prone to oil leakage, it is necessary to take control methods to reduce defective scrap and customer complaints. There are generally two methods to control o...

AI Technical Summary

Problems solved by technology

[0002] In the existing production process of circuit boards, for PCB boards that must be protected against soldering and plugged through holes, for some special structures, such as the case where the copper surface of the solder mask layer has a single-sided window, according to the normal Production process, the abnormal phenomenon of anti-soldering oil is easy to appear after the development of the position, which affects the appearance

[0003] Nowadays, the PCB industry has more and more strict requirements on the appearance of circuit boards. For the particularity of one-sided window opening, which is prone to oil leakage, it is necessary to take control methods to reduce defective scrap and customer complaints. There are generally two methods to control oil leakage: one is to purchase special plug oil to adjust and reduce ink fluidity to avoid oil leakage; the other is to increase pre-baking parameters and adjust post-baking segment time To reduce oil leakage, use the above two methods to control the raw materials for process control. Although the oil leakage after counter-position development has been improved, it is still not ideal, and oil leakage is still prone to occur, even repeatedly, and special plug holes are purchased. Oil production is slow, wasting manpower and material resources

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