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Vacuum pump in printed matter

Vacuum pump products should be familiar to everyone, but for those who really understand the vacuum equipment, there are many functions of vacuum equipment, in the printing industry, the application of vacuum pump is quite extensive, the next thing to talk about is the application of vacuum pump in printing.


What is the use of vacuum pump for printing?


Vacuum pumps for printing products can also be used in the printing industry to remove volatile organic compounds, especially in Tobacco Label printing. The principle of vacuum pump used in vacuum deodorization equipment is to make the product under vacuum dynamic pressure. Under the action of fluctuating pressure difference, the odorous substances in the product quickly break away from the adsorption surface and are discharged outdoors by vacuum pump, so as to achieve deodorization effect. Vacuum deodorizer is fast and uniform in deodorization. Compared with traditional methods, it can significantly shorten the time of deodorization and greatly improve production efficiency and product quality. It is also suitable for volatile organic compounds such as benzene, toluene, formaldehyde, ethylbenzene and butanone contained in food packaging paper, tableware, wood-based panels, furniture, etc.

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Roots vacuum pump needed by vacuum unit can not directly discharge air. For example, the pressure difference between the suction port and the exhaust port of the Roots vacuum pump will be too large, which will overload the Roots vacuum pump. For example, simply increasing the power of the motor of the Roots vacuum pump will result in overheating of the Roots vacuum pump and the tiny gap between the rotors of the Roots vacuum pump will quickly become stuck due to thermal shrinkage. In order to ensure that Roots vacuum pump can reach a higher vacuum, Roots vacuum unit must ensure the clearance between the rotors of Roots vacuum pump. Therefore, the Roots vacuum pump must be equipped with a front-stage pump when it is used. When the pressure in the system is pumped to a certain range by the front-stage pump, the Roots vacuum pump can be started again, which can prevent the Roots vacuum pump from overloading.


The front stage pump can choose water (liquid) ring vacuum pump, rotary vane vacuum pump, slide valve vacuum pump, reciprocating vacuum pump and other vacuum pumps that can directly discharge the atmosphere. It is more advantageous for Roots vacuum unit to choose water ring pump as the front pump than other vacuum pumps under normal conditions. This is mainly because it can extract a lot of condensable steam, especially when the mechanical vacuum pump of gas-ballast and oil-seal is not capable of sweeping condensable steam, or the solvent used can deteriorate the performance of the pump oil, or It is more obvious when oil pollution is not allowed in vacuum system.


The above content is the application of vacuum pumps in printed matter related knowledge, just a brief introduction of the use of vacuum pumps for printed matter and the work flow of imported vacuum pumps, hoping that these knowledge content can help them, if you want to know more about the product content, you are welcome to visit the official website for reference.contact@evpvacuum.com


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