Answers to the problems of Fangrui plasma cleaning machine

Common problems of plasma surface treatment system

Q: is the longer the low temperature plasma treatment time, the better?

A: not necessarily. The main reason of cross-linking, chemical modification and etching on the surface of polymer treated by low temperature plasma is that the surface molecules of polymer break bonds and generate a large number of free radicals. The results show that with the prolongation of plasma treatment time and the increase of discharge power, the intensity of the generated free radicals increases, reaching the maximum point and entering a dynamic equilibrium; when the discharge pressure is at a certain value, the intensity of the free radicals appears the maximum value, that is, the reaction degree of the low temperature plasma to the polymer surface is the deepest under certain conditions.

Q: what is needed for low temperature plasma equipment?

Answer: the unit power of common low-temperature plasma equipment is about 1000W, only need clean compressed air, power supply 220V / 380V, and exhaust gas device.

Q: what is the production line speed?

Answer: because of different types of materials, different processes and different acceptance standards, no one can give an exact answer to this question. However, according to our past application experience, the maximum line speed of surface treatment before bonding of mobile phone keys and mobile phone shell is more than 6 m / min; the maximum line speed of surface treatment before sealing strip coating is more than 18 m / min; the maximum line speed of surface treatment before flocking of sealing strip is more than 8 m / min; more parameters need to be explored by you and us.

Q: can low temperature plasma equipment cancel the primer?

A: no matter in bonding, coating, flocking, pad printing or code spraying, our low-temperature plasma surface treatment equipment has replaced the base coating again and again, reducing the production cost and meeting the requirements of environmental protection.

Q: how long can the increased surface remain after low temperature plasma treatment?

Answer this is an uncertain question, because after treatment, it may be due to the nature of the material itself, secondary pollution after treatment, chemical reaction and other reasons, and the time that the surface can be retained after treatment is uncertain. We suggest that the next process should be carried out immediately after the high surface energy is achieved by low temperature plasma treatment to avoid the influence of surface energy attenuation.

Q: can the low temperature plasma surface treatment system be used online?

A: Yes. The application of low temperature plasma surface treatment system on-line has become a reality, whether it is bonding of mobile phone keys, coating of the shell, flocking of sealing strips, spraying of sealing strips or other applications. We can also match the system with the production line according to the specific requirements of the production line of the user, which can be satisfied whether the new line or the old line is reconstructed.

Q: is there any pollution in the process of low temperature plasma treatment?

A: low temperature plasma surface treatment is a "clean" treatment process. In the treatment process, only a small amount of ozone O3 is produced due to ionized air. However, a small amount of nitrogen oxide will be decomposed during the treatment of some materials, and an exhaust system should be equipped.

Q: does low temperature plasma require special gases?

A: in addition to compressed air, no other special gas is required during online processing. However, if it is a glow discharge device under sub atmospheric pressure, it can be filled with argon, helium and other inert gases, and the surface treatment can be carried out in an atmosphere different from that of air.

Is it dangerous to use low temperature plasma equipment?

A: low temperature plasma equipment works in high pressure environment, but the equipment always takes grounding as the most important standard in the process of design, production and use, and the current is very low. Inadvertently touching the plasma discharge area will produce a sense of "acupuncture", but there will be no problem of personal safety crisis. We usually shield the discharge area to achieve physical isolation.

Q: can low temperature plasma system deal with complex three-dimensional surfaces such as grooves?

A: we can provide the corresponding low temperature plasma surface treatment system for the complex three-dimensional surfaces such as sheet, groove, hole and ring.

Q: will low temperature plasma treatment change the nature of the material itself?

A: low temperature plasma surface treatment can only be applied to the surface of materials with the scale of Amy - micron, which has no effect on the characteristics of materials.