As the reform deepens and technological development in China from a backward PCB ink-producing countries jumped to become the world's advanced countries, China's PCB output value in 2003 in the world rankings, the PCB industry has developed rapidly led development of peripheral industries and related industries. Whether the PCB with high-grade cutting-edge equipment, instruments, meters, or materials have rapid development, but also jumped from a major importer into a major exporter of equipment and materials technical indicators have reached international standards, especially PCB screen printing ink to the world.
Historical Review and Application Status
The first one printed circuit board come out in 1959, around the early 1960s for mass production. Initially as a mask for the manufacture of printed circuit board graphics is a heavy chromate colloidal sensitizer.
A photosensitive mask three stages of development
1. shellac photosensitive mask: This is the oldest technology is the introduction of the former Soviet Union, due to the complex process of ethanol developer will soon be eliminated.
2. glue photosensitive mask: this technology is the process of plate and the system of signs transplant, economical and practical.Later, the technical staff led to the development of physical solid membrane and chemical solid membrane technology, soon to be promoted, but not long storage at high temperatures.
3. polyvinyl alcohol photosensitive mask: available for more than a month after such a mask with a good, stable physical and chemical properties than the glue mask made great progress.
Three mask to meet the growing market demand, in view of the lines of the printed circuit board graphics mostly in 1.5mm or more, there is an urgent need for a new process instead.
(2) homemade screen printing resist ink
Mesh are silk mesh and mesh specifications less plate method is the use of engraved red film and etching patterns on reverse painting "method. Although the home-made screen printing resist ink there are many inadequacies, but it is also China's PCB manufacturing graphics of a leap.
(3) Screen Printing commercialization of the resist ink
Ink makers to see strong market opportunities of the Chinese PCB ink, and soon launched a variety of models, different performance screen printing resist ink PCB ink market. Hong Kong, Japan, the United States with the fastest speed of the company's PCB screen printing resist ink to push our country, and the establishment of a joint venture company, brand ink stable performance, easy to use, the most prominent feature is in the process of faded ink has been greatly improved - went to Mexico with the alkali-soluble, eliminating the need for solvent cleaning and solvent pollution. With the increase in the board of TV panels and tape recorders, UV-curable resist printing inks available, significantly accelerated the rate of production of the PCB board. 100% solid content of the ink solvent evaporation is the material of choice in the circuit board graphics processing quickly in one to two years to the country, have sometimes appeared to outstrip supply, ink manufacturers to create unlimited business opportunities.
Optical imaging plating resist ink
With the expansion of the PCB material market, a pattern plating method, also known as the anti-plating method, plating resist ink was introduced into China, the most prominent advantages are: both as a general resist inks acid in etching and incertain conditions alkali etching can also be resistant plated Cu-resistant plated with PbSn-resistant plating of Sn-resistant plating NiAu, and resolution up to 0.05mm/0.05mm line spacing / line width, as precision circuit board processing to create conditions.
It became one of the main material for making graphics, medium and small enterprises do not need special equipment, widely used in the PCB industry, has now become the largest amount of an ink in the PCB industry.
Second, the solder resist ink
Solder resist ink to permanently stay in the PCB surface protection circuit, insulation, it can also protect the line to the pad and the hole wall painted of Sn in the blowing of Sn, the crest and stick welding disk into the components welding.
The development of a solder resist ink
The surface coating of the printed circuit board solder resist ink origin in the late 1960s, China's PCB solder resist ink began in the late 1970s, start from import into the domestic, but also heatset characters ink. By TV and tape recorders, VCRs PCB heat limited conditions, the UV curable solder resist ink have been published. A few years later from the varieties have increased: Bright, matte, Gyrosigma, wrinkles type except in different colors for the user to select.
Optical imaging solder mask
Thermosetting solder resist ink or UV solder resist ink, the coating method is screen printing graphics reveal the PCB pad. However, with the printed circuit board graphics and pad lines line spacing gradually thicken, and has been unable to meet the requirements of the pump to screen printing graphics. Solder dry film popular a few years, but because the materials are expensive, dedicated vacuum film manufacturing technology is not widely available, the complexity of the operation process, low yield, now this technology has been eliminated. Today suitable for high density PCB-ray imaging solder resist ink, with thermosetting and UV solder performance, the most prominent is its resolution edge basic and optical imaging plating resist ink quite.
(3) application and popularization of the optical imaging solder mask ink
Although the scope of the solder resist ink thermosetting solder resist inks and UV curable ink application, but these are only for single-sided and low-end electronic products, PCB production in high-end printed circuit board is also required optical imaging solder resist ink. As the curtain coating technology development, and a general increase of the density of PCB line, optical imaging solder mask ink to continue to use spreads to the medium and small enterprises.
From the printed circuit board ink market, optical imaging resist plating resist ink and optical imaging solder mask ink is not only the printed circuit board ink, it is the main material in the high-precision printed circuit board production.
PCB ink Market Analysis
1. PCB ink prices continue to decline
With the rise of the PCB status of our country in the world, the price of domestic PCB for several years continuously decreased by 4-5 times, small and medium enterprises most affected. PCB prices continued to fall, the corresponding price reduction for the printing of raw materials and auxiliary materials used, and the price of basic and PCB dropped considerable.
2. optical imaging of anti plating ink application of universal
In view of optical imaging plating resist ink prices are now significantly lower than the dry film of about 2 to 3 times, and the utilization of up to 95% or more, but without adding any equipment and plant investment in recent years, many manufacturers quickly Use a dry film changed the use of optical imaging plating resist ink. After a period of time, due to a significant reduction in costs, shorten the production cycle, many multilayer plant also use this ink to complete the processing of the inner plate and received satisfactory results. The large dual-panel manufacturing plant also uses a double-sided baking Road 滚涂 automatic line production methods, the multiplier effect. So far, the application of the ink basically popularized the SMEs. With the internal migration of PCB plant in Hong Kong and Taiwan, some of the advanced coating methods such as: spraying, electrostatic spraying, dipping into the mainland of China, the plating resist ink of the application and promotion of optical imaging played an important large role in promoting.
3. Screen Printing commercialization of the resist ink
Ink makers to see strong market opportunities of the Chinese PCB ink, and soon launched a variety of models, different performance screen printing resist ink PCB ink market. Hong Kong, Japan, the United States with the fastest speed of the company's PCB screen printing resist ink to push our country, and the establishment of a joint venture company, brand ink stable performance, easy to use, the most prominent feature is in the process of faded ink has been greatly improved - went to Mexico with the alkali-soluble, eliminating the need for solvent cleaning and solvent pollution. With the increase in the board of TV panels and tape recorders, UV-curable resist printing inks available, and significantly speed up the PCB board of the Health plated ink. After a period of time, due to a significant reduction in costs, shorten the production cycle, many multilayer plant also use this ink to complete the processing of the inner plate and received satisfactory results.The large dual-panel manufacturing plant also uses a double-sided baking Road roller coating automatic line production methods, the multiplier effect. So far, the application of the ink basically popularized the SMEs. With the internal migration of PCB plant in Hong Kong and Taiwan, some of the advanced coating methods such as: spraying, electrostatic spraying, dipping into the mainland of China, the plating resist ink of the application and promotion of optical imaging played an important large role in promoting.
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