Screen printing, or silk screening, is an age-old process to print on just about any material. With new machinery it can be even possible to print on cylinders which, with traditional screen printing strategies, could be not possible. The original silk made use of for a screen has been replaced nowadays with a nylon material which has an extremely, incredibly tight mesh. It does still have the feel and appearance of silk. Get far more information about stampa serigrafica
The screen material is stretched over a frame, usually produced of wood. It is a great deal like a screen window that you just would have inside your house, despite the fact that the screen mesh is significantly tighter, meaning the weave is a great deal closer with each other. The screen is coated on both sides using a product called "emulsion". Emulsion is a photo sensitive material which will coat the nylon mesh. When it is exposed to light the emulsion hardens and bonds with the screen mesh. Nothing at all occurs for the emulsion where light is blocked from reaching it and it really is later washed away.
The process requires 3 fundamental actions. One is always to prepare your artwork, image or text and get that created into a piece of film. This film is clear with all the artwork or text becoming black. Second would be to lay this film on top rated of the screen and expose it to a light supply for a pre-determined amount of time. Third you are going to lay your screen onto the material to become printed on and drag ink over it using a squeegee.
Let's say we desire to print the letters "ABC". We would start off by generating a piece of film that would possess the 3 letters on it, likely right inside the center. The three letters could be black on this piece of film and the rest would be transparent. This piece of film is laid flat onto the screen in addition to a piece of glass is laid over it to maintain anything from moving. When we expose this to light the clear areas on the film will harden the emulsion and make it permanent on the screen. Right after the exposure the screen is washed with operating water as well as the parts with the emulsion that were not exposed to light will wash away. In this situation we are going to have our letters "ABC" on our screen where ink will pass via and print to what ever material is below it simply because the unexposed emulsion will wash away.
If we wanted to print every single on the letters within a unique color, let's say red, white and blue, we would need to have a separate screen for every from the 3 letters, but we would need to have each letter inside the appropriate position so that they didn't print on top rated of each other or out of position. The easiest strategy to do that with our "ABC" scenario is usually to setup the three separate screens and after that block the "B" along with the "C" with paper or possibly a tape and do the exposure of just the "A". We'll get in touch with this our red screen. We'll block the "A" along with the "C" off our next screen and call that our white screen. Now we'll block the "A" and "B" and call this our blue screen. Now we've got three separate screens, every inside a separate frame and each and every with a part of our "ABC" image. We could make 3 separate pieces of film as well, each one with just one letter, but that requires further materials.
When printing this "ABC" image we'll print the "A" screen, then the "B" screen and finally the "C" screen to come up with our 3 color image. Care should be taken to register your frame within the precise exact same spot every time to ensure that all text and pictures on the screen show up inside the right spots on the finished product.
To print the screen is laid down around the material that you simply choose to print. Every thing should be held securely in spot so the frame, nor the material moves at all. The color of ink you wish to use is then applied for the screen above the image. If we are printing the "A" then that screen is placed over the material and red ink is placed onto the screen. We will then take a squeegee and pull the red ink down over the letter "A" then back up once more to go over it a second time. This will have printed the letter "A" in red ink onto whatever you might be printing on, a t-shirt, poster or what ever. Repeat this approach with all the other two letters and ink colors to finish the product.
Screen printing is one on the finest approaches to print onto cloth and paper amongst a lot of other points. Modern gear enables you to mass produce solutions like t-shirts. A common t-shirt printer will likely be setup with stations and quite a few individuals will operate the machine at the similar time, every single printing one colour. The Screen printing machine would then index, or revolve, to move the t-shirt into the next position and print that color.
