What is screen printing technology? How to clean it?

Screen printing belongs to stencil printing, and it is called four printing methods together with lithography, gravure printing and gravure printing. Stencil printing includes copying stencil, engraving stencil, stencil printing and screen printing. The principle of stencil printing is that when printing, the ink is transferred to the substrate (paper, ceramics, etc.). ) pass through the perforation of the template with a certain pressure to form an image or text. Transcription printing is the simplest stencil printing, which started at the end of19th century. This kind of printing is made of special wax paper with typewriter or iron pen, and printed on the wax paper with ink roller, and the ideal printing effect can be obtained on the substrate. Screen printing is widely used in stencil printing.

Screen printing is to stretch silk fabric, synthetic fiber fabric or metal screen on a screen frame, and make a screen printing plate by hand carving paint film or photochemical plate making. Modern screen printing technology is to make a screen printing plate by photographic plate making with photosensitive materials (making the screen holes in the graphic part of the screen printing plate as through holes, but not blocking the screen holes in the graphic part). When printing, the ink is squeezed by the scraper and transferred to the substrate through the mesh of the graphic part to form the same graphic as the original. Screen printing equipment is simple, easy to operate, simple in printing and plate making, low in cost and strong in adaptability. Screen printing is widely used. Common printed matter includes: color oil paintings, posters, business cards, binding covers, commodity signs and printed textiles.

Method of screen printing after screen printing: the pore-opening agent, also known as screen printing ink cleaning agent, is composed of additives such as surfactant, solvent, penetrant and rubber antioxidant. Imported raw materials, using advanced production technology and technology. This product has the advantages of room temperature application, high efficiency and energy saving, thorough cleaning and rapid drying, and is widely used in screen printing industry. ? Scope of use Professional cleaning of various mechanical printing, screen printing, imported and domestic rotary mask aligner, single sheet mask aligner, proofing machine, iron printing machine (thermosetting ink) and light-cured UV ink, which can completely replace gasoline and kerosene. In addition, the method of washing the screen board with steel wire mesh: 1. The barbed wire can be washed with 5~ 10% glacial acetic acid solution for 5 minutes, and then all the residual liquid can be washed away with hot water; 2. Hold the wire mesh directly through the gas flame or bunsen burner, and then wipe it with a cleaning brush to prepare the film. However, be careful not to let it stay on the flame for too long; 3. Any diluted corrosive agent can be used to clean the wire mesh, and then the corrosive agent can be washed off with hot water; 4. An old way to clean the wire mesh is to insert the wire mesh into a shelf as thick as the mesh frame, polish it with emery cloth soaked with pumice, volatile oil or paint dilution solvent, then rinse it with hot water, and then paste the template on the wire mesh; 5. 10% alkaline solution or 20% ammonia solution can also be used to clean or degrease wire mesh; 6. You can also use special cleaning agents purchased from suppliers.