News Category Home > Industry News

Do you know these characteristics of airless spraying?

Views : 85
Author : Pei Ze Technology
Update time : 2020-08-31 14:03:26

   Airless spraying in spraying equipment uses booster pumps such as plunger pumps and diaphragm pumps, which can pressurize the liquid paint, and then transfer it to the airless spray gun through a high-pressure hose, using an airless nozzle. The hydraulic pressure is released, so that the instantaneous mist will spray to the surface of the object to be coated, thus forming a coating layer. Because the paint does not contain air, it is called airless spraying.
   At present, the most popular method in China is to use high-pressure airless spraying. The working principle of high-pressure airless spraying is to pressurize the paint to 210 kg/cm², and then atomize the paint into fine particles through a nozzle, which will be sprayed directly onto the surface of the object. High-pressure airless spraying is now used in the construction industry in some countries It has been widely used, and it has the following characteristics:
  1. Surface quality is to spray the paint into fine particles evenly distributed on the surface of the wall, so that the latex paint forms a smooth, smooth and dense coating on the wall. This is incomparable with the original methods such as brushing and rolling. of.


  2. Satisfactory construction effect. Its spraying efficiency is as high as 300-500 square meters per hour, which saves man-hours and can accurately calculate the completion date.
  3. Improve coating adhesion and extend coating life. It uses high-pressure spray atomization to make the coating particles obtain strong kinetic energy. The kinetic energy of the coating particles is injected into the pores, so that the coating is denser and the mechanical engagement with the wall is enhanced. The adhesion is improved, effectively extending the life of the coating.
  4. Save paint. The thickness of manual brushing is extremely uneven, generally between 30 and 200 microns. The thickness of latex paint is generally 30 microns (GB), so the effective utilization of manual brushing is low, and more importantly, the brush marks are affected. For surface quality and feel, the high-pressure airless spraying process is selected, the coating thickness is uniform, and the effective utilization rate is high. Compared with other coating methods, it can save paint by 15% to 25%.
  5. A wide range of applicable coatings can spray higher viscosity coatings without excessive water addition. Especially good at the construction of high-grade interior wall coatings. Such as: all kinds of high-gloss, medium-gloss, eggshell gloss, mercerized, matt and "three-in-one", "five-in-one" and other high- and mid-range paints.
  The principle of the airless sprayer is very simple. It uses a high-pressure plunger pump to continuously deliver paint into the closed paint pipeline, thereby forming a high pressure in the enclosed space, and then releases the spray gun trigger connected to the end of the paint pipe to force the high-pressure paint flow The atomization is formed through a very small, professionally processed nozzle, so as to reach the surface of the coated object.