flexographic photopolymer plates
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PLATE PROCESSING- Traditional Method

PLATE PROCESSING- Traditional Method

  • 2020-12-21

The required image is first exposed onto a film negative, using a imagesetter. It is then placed directly onto the surface of the unexposed plate material and is held in place via a vacuum cover. The flexo printing plate and film are then exposed to UV light in order to fix the image into the polymer material. Only the transparent areas of the negative film will allow the UV light to pass through, enabling the UV rays to alter the molecular bonding in the photopolymer material. After sufficient exposure time, the plate is then fixed to an oscillating platten and immersed into a washout tank. The washout solution can be water or solvent, depending on the type of plate material. The unexposed areas of the polymer are then washed away from the plate base, via a washout brush. The waste polymer is dissolved into the washout solution, which is then later processed for recycling / solvent reclamation.


Following the washout process, the plate is then placed in a hot air dryer, where excess water / solvent evaporates, leaving a dry plate. A post cure is then required, using both UVA & UVC lamps, after which the finished plate is ready for use.

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