Cleaning of Screens:
Safety gloves, goggles and a respirator must be worn at all times when cleaning screens or using chemicals and solvents. Work in a well-ventilated area.
To remove stencils, dissolve 100g de-coat powder in 5 liters of water. Mix well. When dissolved, apply to both sides of the screen with a soft brush or sponge on both front and back until emulsion starts to dissolve. Then blow out with high-pressure water. Do not allow the de-coat solvent to dry on the screen. While the screen is still wet, apply Pregan C-4 (red liquid) to both sides with a sponge or cloth and then add Pregan Paste to both sides. Once stains dissolve, wash with high-pressure water. However, if there are stubborn stains, leave chemicals on for approximately 7 – 10 minutes. (Do not let it dry). Blow out with high-pressure water gun, then rinse thoroughly with low-pressure water to ensure that you remove all chemicals are removed.
Make sure that you spray low-pressure water into all the corners.
Once dry, the screen is ready for coating with photosensitive emulsion for the next job.
Never allow chemicals at any stage, to dry on screens.