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Vacuum system used in the vacuum coating industry

In industry, electronics, semiconductor, energy and other industries, the role of vacuum system is increasingly important, and it is an extremely important necessary facility for factories. Today, we mainly talk about the advantages of vacuum system applied in the vacuum coating industry.

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CVS Centre Vacuum System


Metal spray coating is a long-standing process in coating industry. It uses thermal evaporation technology in vacuum environment. A thin layer of metal (most commonly aluminum) is attached to paper, polyethylene or other polymer membranes to form a strong, beautiful packaging material, which can moistureproof, dust-proof, and isolate light. This is an ideal material for food applications because it keeps the product fresh and prolongs its shelf life. The process has also been increasingly used in the production of decorative paper, gift wrapping paper and film. Large reels (up to 2 meters wide) wrapped around a substrate material (paper or PE film) are used in the process, and they are safely placed in the winding chamber. The scroll continuously rotates - the substrate material passes through the diaphragm at high speed into the spray chamber. The spraying chamber requires a very high vacuum. Between 10-4 and 10-5 mbar, the winding chamber can maintain a low vacuum, about 10-2 mbar. Spraying is the result of thermal evaporation, in which the metal is heated to vaporize and then deposited on the substrate.


Vacuum systems used in vacuum coating applications include several steam superchargers/diffusion pumps, and one or more stages of mechanical boosters, in addition to the front stage pumps. Front-stage pumps must meet the system's production capacity and pressure requirements at all times - so the most important thing is that they are reliable and easy to maintain. In this way, the loss of production time will be minimized, and the loss of production time will affect the productivity of the equipment.

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Dry vacuum pump


The dry vacuum pump has no oil in the working volume, so it brings many benefits. First of all, it enhances the reliability of pumps. Dry pumps are less affected by steam or dust than oil-sealed pumps, so they are more durable and require less maintenance. Reducing the amount of oil also means reducing the cost of careful processing of oil. The use of dry vacuum pumps also minimizes possible contamination, which may occur in oil, affecting pump performance, or in some extreme cases, such as in the final product.


The key to successfully replacing an existing oil-based vacuum pump system is to find the most suitable solution for your specific application. The main benefits of using vacuum pumps for vacuum system foreline pumps used in vacuum coating applications :


1. stop or greatly reduce the shutdown caused by the loss of production.


2. reduce the configuration of related maintenance technicians.


3. professional periodic maintenance and preventive solutions make the pump's performance stable and life extended.


4. the maintenance cost is controllable and the maintenance cost is greatly reduced.


5. Shanghai EVP vacuum expert opinion makes the use of vacuum pump more reasonable and lower cost.


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