1. Preparation for scraping: ci flexo press at present, polyurethane oil-resistant rubber, fire-resistant and oil-resistant silicone rubber scraper with moderate hardness and softness is used. Scraper hardness is calculated in Shore hardness. Generally divided into four grades, 40-45 degrees are low hardness scrapers, 50-55 degrees are soft hardness scrapers, 60-65 degrees are medium hardness scrapers, and 70-75 degrees are hard scrapers. The printing platform should use a squeegee with high hardness, and the thickness of the squeegee should be 10-12mm. The length of the scraper depends on the size of the screen frame, generally 20-30mm wider than both sides of the graphic.
2. Last edition. Find a good rule line and determine the net distance. The screen spacing is generally required to be accurate. In order to achieve good overprinting accuracy, the screen spacing should be set lower, about 3-4mm, the small screen frame should be set at 2-3mm, and the large format can be set at a height of 5-6mm. The parameters of the mesh distance are determined according to the size of the screen and the tightness of the stretched mesh.
Post time: Jul-07-2022