Everyone knows that most of the 3D printed products are pure color models. If you want to color your prints and print a specific pattern, many friends will first think of spray paint.
Very good, spray paint is indeed an excellent solution to color the prints, but spray paint is mainly suitable for large areas of simple color blocks, and it needs to have obvious color separation lines. If it is a specific text, trademark and other complex patterns, spray paint Maybe they are not very good at it.
So, what should we do in response to this type of pattern? Today, I will introduce another coloring scheme-screen printing.
Silk screen is the abbreviation of screen printing, which refers to the use of silk screen as a plate base, and through the method of photosensitive plate making to make a screen printing plate with pictures and texts. Use the basic principle that the mesh of the graphic part of the screen printing plate can penetrate the ink, and the mesh of the non-graphic part cannot penetrate the ink for printing. When printing, pour ink on one end of the screen printing plate, use a scraper to apply certain pressure to the ink part on the screen printing plate, and at the same time move toward the other end of the screen printing plate at a constant speed, the ink is moved by the scraper from the image and text Part of the mesh is squeezed onto the substrate.
Screen printing has many advantages:
(1) Screen printing can use many types of inks. Namely: oily, water-based, synthetic resin emulsion type, powder and other types of inks.
(2) The layout is soft. The screen printing layout is soft and has a certain degree of flexibility not only for printing on soft objects such as paper and cloth, but also for printing on hard objects, such as glass, ceramics, etc.
(3) Screen printing has a small impression force. Since the pressure used in printing is small, it is also suitable for printing on fragile objects.
(4) Thick ink layer and strong covering power.
(5) It is not limited by the surface shape of the substrate and the size of the area. Screen printing can not only print on flat surfaces, but also on curved or spherical surfaces; it is not only suitable for printing on small objects, but also for printing on larger objects. This printing method has great flexibility and wide applicability.
(6) Convenient plate making and low price.
With so many advantages, for 3D printed parts that need to be colored and customized with special patterns, the combination of spray paint and silk screen is simply a tailor-made exclusive post-processing method.
