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Correct understanding of the lack of flushing CTP plates
May 31, 2018


For now, after flush-free CTP plates are made into flush-free CTP plates, there are some deficiencies compared to ordinary CTP plates, as shown in Table 2. But in the long run, it is the future development trend and direction. And its shortcomings can be improved through some measures. Here, the author talks about his ideas in the following aspects.

1. Resistance to force

The resistance force is one of the biggest obstacles restricting the use of flush-free CTP printing plates. In order to improve its resistance to printing, suppliers have made great efforts and achieved certain results, but compared with ordinary CTP plates, Flushing the CTP plate has yet to be improved. According to our company's experience, we can improve the resistance by improving the photoresist. In the future, suppliers and printing companies will also need to work together to solve this problem.

2. Bakeware

Currently, no-rinsing CTP plates cannot be baked. In the future, this problem can be solved by adjusting the formulation of the emulsion. However, the solution to this technical problem still requires a process.

3. Storage

The storage time of the flush-free CTP plate is short, which hinders its wide application to a certain extent, but this is not an unsolvable problem. Printing companies continuously improve and improve their process routes and solutions for flush-free CTP plates, enabling immediate distribution and instant printing.

4. Use cost

At present, the flush-free CTP plate has not been fully used in our company. As far as the current situation is concerned, the price is slightly higher than that of the ordinary CTP plate. The plate material per square meter is about 2 to 3 yuan more. This high part is completely negligible compared with the later processing costs of ordinary CTP plates. In the future, if the flush-free CTP plate completely replaces the ordinary CTP plate, the development waste liquid can be reduced by about 10 tons per year. If the cost per ton of waste liquid is calculated at 8,000 yuan, it can save about 80,000 yuan in waste disposal cost per year. In addition, the cost of purchasing developer, stencil water, and protective adhesives can save about 200,000 yuan per year.

The use of no-rinsing CTP plates enables the pre-press waste (developer, plated water, protective glue, etc.) to be greatly reduced or even eliminated, which is in line with the development of green printing. Although there are still some problems to be solved in the current flush-free CTP plate, suppliers and printing companies are actively exploring. It is believed that with the joint efforts of everyone, the day of the unleashed CTP plate is in sight. Let us Wait and see!