Flexo PhotoPolymer Plate Washing Processor
Application
The flexible resin plate making machine is made entirely of stainless steel. It adopts circuit board control components and has a five-in-one structure. It integrates exposure, washing, drying, detackification and post-exposure. It is a plate making equipment with advanced design, complete functions and easy operation; washing The plate brush is made of high-quality imported polyester fiber, which is especially suitable for making high-line photosensitive resin printing plates. It is indeed a must-have for manufacturers of self-adhesive trademarks, ribbon trademarks, and letterpress printing seals.
- The whole machine is made of stainless steel and will never rust. The self-adhesive version of Velcro does not require double-sided tape. The transmission motor adopts the synchronous motor produced by the famous brand Suzhou Telecom Motor. The pure copper crank is wear- resistant, 304 stainless steel small shaft, full-bearing transmission, independent suspension, precise transmission, no noise, and durable.
- Adopt imported original (Philips) special printing lamp, with stronger brightness, faster printing speed, better fine network cable reducibility, long lamp life, up to 2000H on average, and imported (Japan) diffuse reflection for air extraction The air suction film has good light uniformity. Sealed well, not easy to paste
- Microcomputer fully automatic control, automatic memory data settings, no need to reset the power on, easy to use.
- Fully automatic plate washing mechanism, automatic forward and reverse plate washing mode.
- Imported nylon wire brush, good elasticity, corrosion resistance, no deformation, lifetime repair.
- Constant temperature drying wind, strong wind, fast drying. The steel heating pipe is not repaired.
- One year warranty for all the spare parts, and EcooGraphix will provide the training and technical support .
Specification
- Maximum plate making size: 600X900 mm
- Plate thickness: 1-3mm
- Light : UV lamp, wavelength 350-450nm
- Input power: 6.5KW; Power supply: 220V , 50HZ/60HZ
- Machine volume: 1100X1280X870mm (Width X Length X Height)
- Machine weight: 190KG
Machine features:
- Multi-functional solvent-base Flexo plate making machine, allows for exposure, wash-out, drying and de-tacking.
- AIO design, save space, suitable for Flexo CTP machine.
- MPU central control panel makes operation easy.
- Adopt imported UV Lamps and electronic ballast.
- Strong vacuum device and sucking air plate.
- Circle thermostatic air drying device assures.
- Accurate and stable re-productivity of the original colors and graphics.
Flexo Plate making process
After understanding the structure and composition of the plate, combined with the principles of RIP color separation and imaging, it is easy to understand the overall production process using Figure 7. This picture shows the laser plate making process. If film is used to make the plate, we can understand the black coating on it as film, and the laser burning imaging part is the light-transmitting part of the film.
The production process sequence is: back exposure of the plate → laser imaging (or film-laminated film in film plate making) → main exposure (front exposure) → plate washing → drying → detackification (removal) → post-exposure.
Project details:
1. Back exposure: The bottom of the plate is cured with UVA ultraviolet rays, and the absorption of ultraviolet rays is adjusted by controlling the time. The absorption determines the depth of curing of the plate, that is, the thickness of the bottom of the plate. Absorbing too much will make the corresponding relief shallower; too little will make the resin bottom layer too thin, making it difficult for the relief content to be imaged vertically and easily deformed.
2. Laser imaging: The laser burns and engraves the content we need on the black coating, that is, burns off the black coating above the required graphics and text, allowing ultraviolet rays to pass through and enter the photosensitive resin layer for cross-linking reaction. Film plate making is to use the photosensitive film coating of the imagesetter to form a negative film after development, fixation, cleaning and drying, and then laminate it on the photosensitive plate.
3. Main exposure (front exposure): Ultraviolet rays enter the photosensitive resin layer through the gap in the burned black coating. The part exposed to the ultraviolet rays undergoes a cross-linking reaction and then solidifies, while the part blocked by the black coating is blocked by the ultraviolet rays. It is still in a semi-fluid state that has not been solidified.
4. Plate washing: When the required content has completed the cross-linking reaction and been cured, put the resin plate into the plate washing machine to wash the plate and dissolve the uncured semi-fluid resin. Here, different plate materials are roughly divided into 4 cleaning methods:
The solvent plate uses a brush and solvent to dissolve and clean
The water-washing version uses a brush and water to dissolve and clean
The water-washing version uses a brush and strong alkali Mix it with water for dissolution and cleaning.
The thermal plate uses infrared heating to dissolve the uncured semi-fluid resin, and then mixes it with non-woven fabric for adsorption. (Each material has its corresponding ingredients and usage methods. As for which one is suitable or good, you have to choose according to your own needs)
5. Drying: After washing the plate, the solution will remain on the surface of the plate, and part of it will enter the inside of the resin to cause the plate to expand. We need to dry the plate to evaporate and dry the solvent on the surface. , and evaporate the solvent that has entered the interior, returning it to within 103% of the thickness of the plate before cleaning. The safe drying temperature and time for each solvent are different, and thermal plate making does not require drying.
6. De-sticking: The material of the flexographic plate has a certain viscosity. This viscosity will affect the amount of ink and the tension of the ink. When the viscosity is too high, a lot of paper powder and other dirt will stick to it. It uses ultraviolet light in the UVC band to gently age the surface of the material and remove the viscosity. If the time is too long, it will cause damage to the plate, and if the time is too short, the ideal effect cannot be achieved. A popular saying among material vendors is that plates with very short detackification time tend to have poor plate life and poor resin elasticity.
7. Post-exposure: After completing all the above processes, use UVA to conduct an overall photosensitive curing of the plate. For example, during the main exposure, the resin underneath the black coating is actually not cured. Through a later post-exposure, the intermediate layer including the material undergoes a complete cross-linking reaction, which increases the lifespan.
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