Treatment system before CTP plate base coating working procedure

Abstract

The invention discloses a treatment system before a CTP plate base coating working procedure. The treatment system comprises an electrolytic tank, an electrolyte inlet pipe, a water inlet pipe and an ampere meter. A liquid discharging pipe is arranged on the side wall of the electrolytic tank. A partition is arranged in the middle of the electrolytic tank. Multiple via holes are formed in the middle segment of the partition, and a liquid baffle right facing the middle of the partition is horizontally arranged on the inner wall of a liquid supplementing cavity. The outlet end of the electrolyte inlet pipe is bent and extends to the bottom of the liquid supplementing cavity. The outlet end of the water inlet pipe is bent and extends to portion above the liquid supplementing cavity. New electrolyte and water are injected into the liquid supplementing cavity through the electrolyte inlet pipe and the water inlet pipe, and the outlet end of the electrolyte inlet pipe extends to the bottom of the liquid supplementing cavity, so that the newly-supplemented electrolyte enters an electrolysis cavity through the via holes firstly, and meanwhile an external water pump pumps part of aluminum ions in the electrolysis cavity when the content of the aluminum ions fluctuates out through the liquid discharging pipe on the side wall of the electrolytic tank, so that the effect that the content of the aluminum ions in the electrolytic tank is kept in the relatively stable state is guaranteed.

Description

technical field [0001] The invention relates to the field of aluminum plate base printing, in particular to a treatment system before the coating process of a CTP plate base. Background technique [0002] In the production process of the aluminum plate-based printing plate, the aluminum plate needs to be electrolytically etched. The electrolyte is a 10g / L hydrochloric acid solution. During the electrolysis process, aluminum ions will continue to be generated. Therefore, it is necessary to add fresh solution without aluminum ions to prevent the concentration of aluminum ions from being too high. The concentration of aluminum ions will affect the quality of the electrolytic grain of the printing plate. The existing method is to directly let off a part of the electrolyte, and then directly add a certain amount of water and hydrochloric acid. The disadvantage is that the concentration of aluminum ions is unstable, and the ion concentration drops significantly after changing th...

AI Technical Summary

Problems solved by technology

The disadvantage is that the concentration of aluminum ions is unstable, and the ion concentration drops significantly after changing the liquid. If the liquid is not changed, it will grow upwards. Too high or too low aluminum ion concentration is not conducive to electrolysis.

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