Copper layer activator and preparation method and application method thereof

Abstract

The invention discloses a copper layer activator and a preparation method and application method thereof. The copper layer activator is prepared from, by mass, 5-15% of phosphoric acid, 20-30% of sulfuric acid, 5-8% of chromic anhydride, 0.5-1.8% of a copper layer corrosion inhibitor, 0.2-1% of an organic solvent and the balance water. The copper layer activator can be applied to plate roller cleaning after laser etching, plate surface activation of a laser direct engraving plate roller, plate surface discoloration or difficult deposition of a secondary chromium plating layer after sulfuric acid deplating, removal of a hydrochloric acid deplating plate surface oxidization layer and the like; the copper layer activator has the following advantages that the use is convenient, and the operation can be completed through pouring or spraying; after oxide is completely cleaned away, the chromium layer in mesh dots of the plate roller more easily deposits; the internal smoothness of the mesh dots can be improved, ink transfer is better facilitated after chromium plating, and the probability of plate clogging is reduced; the oxide is thoroughly removed, the probability of defects such as pinholes in the chromium layer is reduced, the sharpness of the edges of the mesh dots is also reduced, and the service life of the plate roller is conveniently prolonged.

Description

technical field [0001] The invention relates to the technical field of electroplating technology, in particular to a preparation method and an application method of a copper layer activator. Background technique [0002] In the gravure plate making industry, in order to meet some special needs, such as anti-counterfeiting, special line version, leather version, wallpaper version, etc., the copper layer is electroplated after grinding and polishing, then cleaned, glued, and then laser burned into the pattern, and finally plated Hard chrome, known as laser plate in the industry; plate roller that corrodes the pattern through ferric chloride solution is called corrosion plate. After burning or etching, use absolute ethanol or acetone to remove the photoresist, but the oxide layer formed on the surface of the copper layer is difficult to remove, which has a great impact on the subsequent chrome plating effect, and then causes chrome plating quality problems. For example, 1. Chro...

AI Technical Summary

Problems solved by technology

After burning or corrosion, use absolute alcohol or acetone to remove the photosensitive adhesive, but the oxide layer formed on the surface of the copper layer is difficult to remove, which has a great impact on the subsequent chrome plating effect, which in turn causes chrome plating quality problems, for example, 1. Difficulty in chrome plating, There is even no chromium layer deposited locally; 2. The chromium layer in the rusted area is pale in color, high in porosity, and poor in corrosion resistance; 3. Copper rollers that are not cleaned have many defects after electroplating and often need to be repaired; The rougher the coating, the more difficult the ink transfer will be, which will affect the color printing effect, etc.

In order to achieve the ideal effect as possible, most manufacturers generally treat each plate roller with an independent process, but the treatment process of each plate roller is very cumbersome and may not achieve the ideal effect, and even one plate roller needs Repeated chrome plating several times, resulting in a great waste of manpower and material resources