Cleaning method of environment-friendly circuit board printing screens

Abstract

A cleaning method of environment-friendly circuit board printing screens comprises the following steps of step 1, preparing a sodium carbonate solution in a cleaning tank, wherein the mass concentration of the sodium carbonate solution is 1.2 to 4.0%; step 2, scraping the accumulated oil on the surfaces of the screens to be cleaned; step 3, vertically placing the screens to be cleaned into the cleaning tank in the step 1 to be soaked in turn; step 4, brushing the accumulated oil on the surfaces of the screens to be cleaned; step 5, placing the screens to be cleaned into the cleaning tank to be soaked again; step 6, taking out the soaked and cleaned screens and washing the screens through the clear water; step 7, drying. According to the cleaning method of the environment-friendly circuit board printing screens, the environment-friendly effect is achieved, toxic odorous gases cannot be produced in the ink cleaning process through the sodium carbonate solution, and accordingly the damage to bodies of operators cannot be caused, the working environment and the workshop environment can be effectively improved, and the cleaning cost of the screens is reduced and meanwhile the soaking is performed through the same sodium carbonate solution, an additional cleaning tank does not need to be added, and accordingly the input of production materials is saved and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of circuit board manufacturing, and in particular relates to a cleaning method for an environment-friendly circuit board printing screen. Background technique [0002] In the process of PCB processing, the anti-soldering process mainly adopts the method of anti-soldering screen printing to evenly print the anti-soldering ink on the PCB board. In order to reduce the cost, after the screen printing is completed, the ink on the screen needs to be cleaned and repeated. use many times. [0003] There are two commonly used cleaning methods in the industry: [0004] The first is the traditional method of cleaning the screen. First, put the screen into a cleaning tank filled with screen washing water or a cleaning tank filled with anti-white water, and then the workers wear protective tools and use rags to manually scrub. Cleaning, whether using net washing water or anti-whitening water, contains a large amount ...

AI Technical Summary

Problems solved by technology

When using a net washing machine for cleaning, the cost is high and it is not suitable for large-scale use. At the same time, a small amount of odor will be released

[0006] Therefore, whether it is manually cleaned with net washing water or machine washing, the smell of net washing water will be released and stay in the production and working environment. After the operator inhales it, it will cause great harm to the human body.