New technology of glass cover plate - electronic coating process principle
Electronic coating is a technique for producing thin film materials. In the vacuum chamber the atoms of the material are isolated from the heating source and struck on the surface of the plated object.
The process is generally as follows:
1, surface treatment: usually, before electronic coating, the substrate (plating) for oil removal, dust removal and other pretreatment, to ensure the plating clean, dry, to avoid the bottom coating pitting, poor adhesion and other shortcomings. For special materials, such as PE (polyethylene) material, it should also be modified, in order to achieve the expected effect of coating.
2, bottom coating: when the bottom coating construction, can use spraying, also can use dip coating, specific should be according to the plating size, shape, structure and user equipment and other specific conditions and customer quality requirements.
3, bottom coating drying: coating oil series are self-drying paint, drying purpose is to improve production efficiency. Drying complete requirements are completely dry film.
4, electronic coating: coating, should ensure that the vacuum of the electronic coating machine to meet the requirements, reheating tungsten wire, and strictly control the heating time. At the same time, should master good coating with metal (such as aluminum wire), too little may lead to metal film cover not the substrate, too much is in addition to waste, but also affect tungsten wire life and coating quality.
5. Surface coating: the purpose of surface coating is usually the following two aspects: A, improve the water resistance, corrosion resistance, abrasion resistance of the plating; B. Provide the possibility for water dyeing and coloring.
6. Surface coating drying: usually the surface coating is thinner than the bottom coating, so the drying temperature is low, about 50-60℃, about 1 to 2 hours, users can be flexible according to the actual situation, should ensure that the surface coating is completely dry. If the plating does not require coloring, the process is now complete.
7. Water dyeing and coloring: if the plating needs water dyeing and coloring, you can put the finish paint has dried the plating into the dye VAT, the required color, then wash dry. Attention should be paid to control the temperature of the water when dyeing, usually around 60~80℃, at the same time should control the time of water dyeing. The disadvantage of water dyeing is that it is easy to fade, but the cost is lower.
8. Oil dyeing and coloring: if the plating part needs oil dyeing and coloring, after electronic coating, according to the customer's requirements, directly with matte color oil, transparent color oil dip or spray, after drying. The color of oil dye lasts a long time, and the cost of electronic coating is higher than that of water dye.
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