A kind of pcb plug hole plate processing technology

Abstract

The invention relates to a PCB plug hole board processing technology, which is used for manufacturing PCB boards. When the PCB board is printed with green oil, the green oil is mixed with special plug hole oil and solder resist surface oil in a mass ratio of 1:1. The special plug hole oil has high resin content and has no developability. The plug hole can ensure the fullness of the ink in the hole. The solder mask surface oil has strong developability and low resin content. Rework can be carried out when the plug hole is defective; When the oil and solder mask oil are used in a 1:1 ratio for plugging, it can not only ensure the resin content of the new plugging ink, but also meet the developability of the new plugging oil. Under the condition of ensuring the plumpness of the plugging hole, there is a problem It can also be reworked without scrapping the PCB board.

Description

technical field [0001] The invention relates to a process for processing a PCB plug hole plate, which belongs to the field of PCB board manufacturing. Background technique [0002] With the development of mounting technology, it is required to open a window on one side of the PCB board for mounting parts, and oil is required in the hole to ensure that the tin beads will not penetrate from the hole to the other side when mounting the parts, and fall to the components to form Tin short circuit is bad. [0003] In the manufacturing process of PCB boards, there are two commonly used methods of plugging ink: the first is to use special plugging ink for plugging; the second is to use solder mask oil to plug and print. [0004] The advantage of the first type of ink plug hole is that the ink in the hole can be filled. The disadvantage is that when a defect is found, the PCB board cannot be reworked, because the plugging oil in the hole cannot be reworked, and the PCB will be scrap...

AI Technical Summary

Problems solved by technology

[0004] The advantage of the first type of ink plug hole is that the ink in the hole can be filled. The disadvantage is that when a defect is found, the PCB board cannot be reworked, because the plugging oil in the hole cannot be reworked, and the PCB will be scrapped.

[0005] The advantage of the second type of solder mask oil plugged tape printing is that it can be reworked if there is a defect, and the ink in the hole can be reworked clean, but the disadvantage is that there are many holes in the plug hole, the ink shrinks too much after drying, and the ink in the hole is not full enough.