Screen printing is the process of pressing ink through a stencilled mesh screen to create a printed design. It’s a popular technique used in a whole range of different industries, so even if you've never heard of the term before today, it’s likely that you’ve worn or used a screen-printed product at some point without even realising. The process is sometimes called serigraphy or silk screen printing, but all of these names refer to the same basic method.
Screen printing machine screen version of screen printing is a necessary step, then how to make screen printing screen it? Here for everyone to share screen printing machine version of the production steps.
First, the screen printing machine screen version Stretching: matching the required mesh, according to tension, angle and other requirements Zhang net, bonding in aluminum and other materials on the network frame. Mechanical aluminum frame, according to the provisions of the tension posted on the screen, screen polyester, nylon, stainless steel and other materials, polyester dyeing, nylon mesh to prevent random reflection.
Second, the screen printing plate Screen version: Special screen cleaning agent cleaning, degreasing.
Third, the screen version of the coating: Zhang Hao, wash the screen using hand coating or coating machine. Emulsion single-liquid type (SBQ Department) and double-liquid type (diazo), two-liquid emulsion to be sensitized before coating, the diazo photosensitizer completely dissolved with the emulsion mixed, degassing before use. Single-liquid photosensitive glue, gently stir well before use. Coating scraping bucket should be avoided into the bubble, the drying temperature at 30 ~ 40 ℃. Film thickness according to the requirements of the printed matter, the coating can be controlled by the number of times the film thickness.
Fourth, the screen printing machine screen version of the drying: warm air drying below 40 ℃.
Fifth, the screen printing machine screen exposure: film affixed to the film P screen in the screen, exposed to ultraviolet light, UV-irradiated part of the loss of water-soluble, depending on the photosensitive plastic, exposure time is different. Please refer to each page exposure schedule, and determine the best exposure exposure time.
Sixth, screen printing machine screen for development: with water will be exposed on both sides of the screen soaked or placed in the sink for 1 to 2 minutes, remove the high pressure water gun with water spray screen (part of the UV irradiation Photographic glue hardened on the screen, not part of the UV radiation dissolved in water), until all the patterns developed clear so far, remove the excess water with a pressurized air gun, skin cloth and so on removed.
Seven, screen printing machine screen for secondary drying: 30 ~ 40 ℃ under the conditions of drying.
Eight, for the final version: dry check. Correction screen, pinhole to be repaired.