1000pcs/hr SBF460-F Precise Flat Screen Printing Machine

1000pcs/hr SBF460-F Precise Flat Screen Printing Machine

• Preparation of Screen Printing Plate A screen printing plate is composed of a screen mesh, a frame, and photosensitive emulsion, among other components. First, the screen mesh is tightly stretched over the frame. Then, a photosensitive emulsion is coated onto the screen mesh. Next, a film with images or text (either negative or positive) is placed over the emulsion-coated screen mesh for exposure. During exposure, the photosensitive emulsion in the areas corresponding to the transparent parts of the film undergoes a photochemical reaction and hardens, while the emulsion in the areas corresponding to the image/text parts of the film remains unexposed and soluble. Afterward, through development, the unhardened emulsion is rinsed off, leaving a hollowed-out area on the screen mesh that matches the images or text on the film. This hollowed-out area serves as the channel through which ink will pass.

• Ink Coating and Scraping An appropriate amount of ink is placed on the screen printing plate, above the area corresponding to the image/text parts. At this point, the scraper (squeegee) installed above the screen starts working. Driven by a precision control system, the scraper moves at a set pressure, angle, and speed in a uniform linear motion (or reciprocating motion) along the surface of the screen printing plate. Under the extrusion of the scraper, the ink passes through the hollowed-out image/text areas on the screen printing plate, transfers to, and adheres to the flat substrate below, thereby replicating the same images or text as those on the printing plate.

semi automatic screen printing machine

flat screen printing machine 1000pcs/hr

precise screen printing machine SBF460-F

1000pcs/hr SBF460-F Precise Flat Screen Printing Machine Images