Product Description

Low-priced and easy-to-operate screen printing machine:

Principle

The printing process of the printing machine is a one-time exposure process. The film and the screen are tightly attached, and the air is extracted by a vacuum pump to form a vacuum, so that the two are close to the glass plane. Then the light source is exposed to the photosensitive layer on the screen through the film. After the exposure, the air is automatically released to complete the printing operation. Based on the photochemical reaction of the photosensitive material, the photosensitive material is coated on the screen, and a chemical reaction occurs under ultraviolet light to form the printed part of the pattern or text. The accuracy and high quality of the printing effect are ensured by controlling the exposure time and intensity.

Structure

• Light source device: Iodine gallium lamps, LED lamps, etc. are mostly used as light sources. Their spectral distribution is consistent with the photosensitivity characteristics of the screen, which can fully expose the photosensitive layer of the screen. For example, the wavelength of gallium iodine lamp is distributed in the range of 350-450nm, which is effective for most photosensitive layers of plate exposure, and has matching triggers, reflective lighting devices and cooling fans, etc.

• Exposure room: A closed room composed of working glass and rubber gaskets, in which the screen and film are placed. The working glass must be smooth, flat, transparent, and free of scratches, bubbles and other defects to ensure the exposure effect and imaging quality.

• Vacuum chamber: Mainly composed of vacuum pump, vacuum display meter, solenoid valve and suction pipe, the function is to extract the air in the closed room, provide appropriate negative pressure, make the screen and the original plate fit closely, and prevent problems such as virtual network during exposure.

• Electrical control system: including computer panel, control circuit, timer, etc. The computer panel has a power switch, display window, exposure button, vacuum button, etc., which can preset, query and modify parameters such as exposure and vacuum time. The operation is simple and convenient, and can realize automatic vacuuming, exposure and timing functions.

• Frame: It adopts a flip-up frame cover mechanism, with a flexible rubber cloth and a vacuum pump to achieve full vacuum adsorption and ensure the stability of the plate during the exposure process.

In the process of making the screen, it is a very important process to transfer the pattern on the film to the screen printing plate coated with photosensitive adhesive, which is done by the printing machine. The working table of the plate printing machine is transparent glass, and the glass is under the UV lamp tube. When printing the plate, the plate negative film is attached to the screen surface and placed on the table, and the blanket will only press the negative film and the screen plate tightly. , Since the printing negative has black graphic area and transparent area, UV light will pass through the transparent area and be blocked by the graphic area, and the photosensitive adhesive on the screen will appear in exposed and non-exposed areas, and then in the process of processing to make the final Net version. 

UV Exposure Machine //Usage and characters
Guide	Used in the filed of plate-making such as pad plate, screen plate, hot stamper plate, resin plate; When you cover the film onto the plate into UV exposure machine, start it, the emulsion on the plate will appear a unseen imagine; This is important process on all plate-making technology. flexibility Rubber Film ensure Film contact compactly with surface of silk when vacuum state.
Application fields	Nylon silk,; PET Silk, Stainless steel silk.
UV Exposure machine //Parameter
Technical parameters	UV-S2
	Glass Dimension: 900X1200mm; Glass thickness: 10mm. Lamp Wattage: 2000W; Max Frame dimension: 800×1100mm; Exposure Area: 850mm×1150mm; Vacuum degree: 0.05mpa; Wattage: 80w/cm; Lamp distance:750mm； Weight:135KG.
	UV-S4
	Glass Dimension: 1200X1500mm; Glass thickness: 10mm; Lamp Wattage: 3000W; Max Frame dimension: 1100×1500mm; Exposure Area: 1050mm×1550mm; Vacuum degree: 0.05mpa; Wattage: 80w/cm; Lamp distance:750mm； Weight:155KG.
	UV-S5
	Glass Dimension: 1500X2000mm; Glass thickness: 10mm; Lamp Wattage: 3000W; Max Frame dimension: 1400×1900mm; Exposure Area: 1450mm×1950mm; Vacuum degree: 0.05mpa; Wattage: 100w/cm; Lamp distance:750mm； Weight:175KG
Works supply	1phase 220V or 3Phase 380V Power supply
Package list	Outer size: 1.28×0.98×0.98m ； Net  weight:135 KG
	Package size:1.36×1.09×1.23m ； Gross weight:226 KG; CBM: 1.136
H.S.Code	8443198000
Certificate	CE
UV Exposure Machine //Advantage
Function	Choose high quality UV lamp. keep long life; Reflect cover made by resist aging materials; Whole jointing with zinco plate, both portability and firmly; Exposal time auto adjustment and controlling; High vacuum degree, easy to transfer and copy fine lines ； Automatic door of UV lamp shut off and turn on when exposure and finish ensure long life of UV lamp; High toughness Rubber Layer ensure Film closely cover with frame.
Accessories included	Operation instruction in English 1 pc.
UV Exposure machine //Technical support
Printing elements	Please replace UV lamp after 1000 hours life; Please use UV Exposure machine in dark room; Please test Exposure machine and get correct parameter before making plate; Choose good quality Photosensitive adhesive

Summary︰
The main feature of the screen printing plate is the hollowed out graphic area and the closed area after the photosensitive glue is cured on the tight mesh cloth. The hollowed out area can penetrate the ink, and the closed area blocks the ink. Exposure machine is a device that uses photosensitive glue to be blocked and transmitted by the film under the irradiation of UV light to form the photosensitive area and the non-sensitive area. The photosensitive area will be cured to form a closed area of ​​the screen, and the non-photosensitive area will be washed to form a hollow area. Exposure machine is the most important equipment in the field of traditional plate making, and it has a wide presence in the market.

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