The market for plastic steel profiles and plastic steel doors and windows is fierce and competitive. The traditional production techniques and formulas make all the profiles the same color, and no one can highlight their products on the group. Germany has experienced this stage in the birthplace of plastic steel doors and windows, and the high weather-resistant color wood grain window film of Germany RENOLIT and LG Chemical Company came into being. It not only beautified the building, but also appeared. The idea of returning to nature also gives designers a greater imagination, giving the interior a more distinctive color scheme, creating a warmer environment for the residents. It quickly became popular in high-end residential and office buildings in Germany, and Renault was also the industry leader. It is believed that the Chinese plastic profiles and doors and windows industry, which is jumping and developing, will also follow the trend of this era. All the color profiles on the market except the film are made of two different processes: two-color co-extrusion, electrostatic spraying, color spraying, color printing, thermal transfer, and full mixing.

Color spray

The color sprayed profile is coated with a layer of UV-curable paint on the surface of the profile substrate, and a protective film on the surface of the UV-curable paint; or a layer of UV-curable paint or self-drying color on the surface of the profiled steel profile substrate. The lacquer coating is coated with a layer of UV curable varnish on the surface of the UV curable lacquer or the self-drying lacquer coating; a protective film is attached to the surface of the UV curable varnish. The color plastic steel profile of the utility model has the advantages of rich color, full paint film, good scratch resistance, wear resistance, corrosion resistance, aging resistance, no fading and non-flammability, and has better decorative effect than the commonly used plastic steel profile. And protection effects. The manufacturing method of the steel profile according to the utility model has the advantages of small production site, low equipment investment, high production efficiency, low energy consumption and no pollution.

Electrostatic spraying

Electrostatic spraying, generally spray 2-3 times, coloring at least one pound, spraying in Germany is generally only done in the window factory, the profile factory hardly do. After the electrostatic spraying, the interface will be blackened due to the too high temperature during welding. There is a kind of lacquer that does not turn black when welding, but the price is too expensive. Electrostatic sprayed products are not resistant to abrasion and will soon lose their luster. Especially when the color is deep, it will become gray. It will be better to add some oil on the surface, but it is also faster than the film. The thickness of the spray is generally only 10μm thick. In principle, a layer of PMMA can also be applied, but the thickness is only 20 μm, and few people apply it. Aluminum alloy profiles can also be sprayed, but the process is different. Aluminum alloy spraying is a kind of powder coating. The pigment powder is coated into particles by a material. The surface temperature of the aluminum alloy is very high, and the particles are sprayed on the aluminum alloy. It melts and the surface is painted. Electrostatic spray products have poor weather resistance, and the color is not obvious. The shallow changes are obvious in a few years. For example, the German railway logo is electrostatically sprayed into various colors, and the color becomes black after a few years.