Black color thermal curable solder mask for pcb industry use

It is a solder mask printed by mesh and then heat-curing. After membranization, the coating is resistant to the damage from solder and chemical, print the single side or two sides of the circuit board while local solder. In order to give full play to its advantage, the detailed operation as below:

1. Making the mesh, use the mesh of 18T~36T and the squeegee of 65°— 70°.

2. Stir the gel equally. The viscosity of the gel is about 600-900ps. If you need to dilute the gel, please choose thinner special for the gel developed by us.

3. When printing, please try best to make the coating thicker to 400um or more.

4. Curing condition, two side circuit board, 150°C*3-5 minutes for the first side printing, and 150°C*18-30minutes for the second side printing.

5. Before tin solder, please check the coating with air bubble or not, please check the circuit board about leak printing. The tin stove is 260-3000°C,immerse soldering time is 3 seconds, air knife is 350-1000°C,the pressure of the air knife is 4.0-5.0kg.

6. Protect the gold fingers and gold plating position, after printing, the coating must be thicker than 350um.

7. Curing condition: 150°C*15-25minutes

Note:the thicker coating printing, the longer curing time, the better thermostability. If the coating is pull-out or melted during the soldering, please extend the curing time to 5-10 minutes. Used in protect gold finger when PCB spray-tin through the tin stove well as ware-soldering. The information above is just for reference, the actual operation depend on the environmental condition and different operating methods. The detailed operation, please contact the supplier.

Attention:

1.The base and hardner should be mixed according to the ratio and stired throughly before using.

2.We will offer you special diluent or DPM if the ink need dilute.

3.The values above are based on experients in our lab.Experients need to be carried out in order to get proper using condition.

Hubei Nuojinsen Technology Co.,Ltd ,after years of unremitting efforts，Combined with foreign advanced technology and process,Production of PCB ink has reached the technical level, conforms to the requirement of RoHS environmental protection directive, with excellent quality and excellent service is deeply trusted by customers.
Company passed the ISO9001 quality standard certification and ISO 14000 environment system certification,

is the national high and new technology enterprise. Company has achieved many honors, including: the Chinese photographic society of professional committee of the radiation curing, deputy director of the unit,the ninth national committee, deputy director of the printed circuit branch of unit, the national standardization technical committee, deputy director of the unit printed circuit boards, printed circuit industry in China in the second session of "nation" brand enterprise, Hubei in 2015 advanced units of ecological construction and environmental protection, etc.Companies always adhere to the science and technology as the first productivity. Enterprise technology center in Wuhan city, the company has built in Wuhan city, and form a complete set of PCB ink research and development of engineering technology research center, two platform, and lead to make the printed circuit with marking ink and the printed circuit using resistance solder "two important industry standards. The company's flagship product, solder resist ink (solder mask)  series of products have been American UL safety certification.

The company attaches great importance to "research" development, actively carry out technical exchanges and extensive cooperation with Beijing University of Chemical Technology, Wuhan Chemical Design Institute, University of Science and Technology of China and other domestic famous universities, in early 2016, and polymer materials Wuhan University college established a joint laboratory. After years of scientific research cooperation, the company has built an independent intellectual property system. The company is equipped with advanced facilities in addition to the basic laboratory, but also to unite the doctor, master as the core, R & D capability of a strong professional and technical team.

Over the years the company to scientific management mode and improve the quality of production and management system, continuous development, and strive to open up the international market, in order to achieve broader development. The company all staff is willing to "Self-improvement, practical effectiveness" spirit of enterprise and the "quality first, customer first" business philosophy, and constantly improve the innovation, meet customer requirements, improve the competitive ability of enterprises in the domestic market.