Deplating solution and deplating process and glass products for stripping glass ncvm film layer

Abstract

The invention discloses a deplating solution, a deplating process and a glass product for removing a glass NCVM film layer, and relates to the technical field of cover glass deplating. The deplating solution comprises the following components in terms of mass percentage: 50- 15-25% of 70% concentration of nitric acid, 2-5% of carboxylic acid complexing agent, 10-15% of sulfamic acid, 1-3% of penetrant, and the rest is water. The deplating process uses the above deplating solution at room temperature to deplate the glass after NCVM coating and silk screen printing ink. The invention alleviates the technical problems that the traditional use of high-temperature and strong alkaline deplating solution tends to cause over-degradation of the NCVM film layer of the product during the deplating process, and the screen printing ink is prone to defects such as missing teeth and pitting. The deplating solution of the present invention can effectively remove the NCVM film layer at normal temperature, is not prone to over-removal phenomenon, and will not damage the silk screen printing ink, and avoids problems such as tooth loss and pitting in the silk printing ink. The appearance of the coated glass is good.

Description

technical field [0001] The invention relates to the technical field of deplating of cover glass, in particular to a deplating solution, a deplating process and a glass product for stripping the NCVM film layer of glass. Background technique [0002] With the progress of society, 2D, 2.5D or 3D glass has been applied to various electronic products and has become a fashion. Compared with traditional plastic and metal mobile phone battery covers, 2D, 2.5D or 3D glass is thinner, transparent and clean , anti-fingerprint, anti-glare, scratch resistance and weather resistance. Electroplating LOGO on glass has become a fashion. The process of electroplating LOGO on cover glass includes: product cleaning—electroplating NCVM—screen printing ink—deplating—cleaning—inspection, that is, first coat a layer of NCVM film on the glass, and then screen print the pattern Finally, a part is selectively removed, so as to give the coating layer a patterned effect and form a LOGO. The compositi...

AI Technical Summary

Problems solved by technology

[0003] Traditionally, strong alkaline stripping solution is used to strip NCVM film, and it often needs to be carried out at a higher temperature during stripping, but it is easy to be damaged by using high temperature and strong alkaline stripping solution during the stripping process. Product electroplating LOGO (NCVM film layer) causes excessive retreat, and silk screen printing ink is prone to problems such as tooth loss and pitting, which affects the appearance quality of the product

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