Screen Printing Exposure Machine

A screen printing exposure machine transfers a stencil design onto a photo-emulsion-coated mesh screen using UV light. The screen sits inside a vacuum frame. This frame presses the film positive flat against the emulsion, keeping edges sharp during exposure. UV tube arrays or LED panels sit above or below the frame, depending on model design. These emit light in the 350-400nm range. This hardens emulsion where the design allows light through. Exposure time typically runs 1 to 8 minutes. This depends on emulsion type, screen mesh count, and lamp output.

Frame sizes range widely. Small tabletop units handle screens up to 50x60cm, suited to shirt printing and small patches. Large-format machines handle screens over 100x150cm for banner or industrial printing work. Vacuum pumps built into the base pull air out during exposure. This holds the film and emulsion in full contact across the entire screen surface. It prevents blurred edges from any gap between layers. Timer controls let the operator set exact exposure duration. Some models add a digital display and preset memory for repeat jobs using the same emulsion and mesh combination.

Cooling fans run during longer exposure cycles. UV lamps generate heat that can affect emulsion consistency if left unchecked. Power draw varies by lamp count and wattage. Common tabletop and mid-size units typically use 500 to 2000 watts on standard single-phase power.

Garment printing shops use exposure machines to prepare screens for shirts, uniforms, and promotional items printed in bulk. Sign and banner manufacturers use larger units for outdoor advertising material. Security and ID card printing operations also use exposure machines when producing stenciled patches, badges, or uniform markings.

Tactical Supply Pakistan supplies screen printing exposure machines to garment shops, sign manufacturers, and uniform production facilities across Pakistan. Frame size and lamp configuration are matched to expected screen volume and job turnaround needs.