Degumming agent for removing back gum on glass rear cover of mobile phone, degumming method for glass rear cover of mobile phone, and glass rear cover of mobile phone

Abstract

The invention discloses a degumming agent for removing back gum on a glass rear cover of a mobile phone, a degumming method for the glass rear cover of the mobile phone, and the glass rear cover of mobile phone, and relates to the technical field of degumming of back gum of glass. The degumming agent disclosed by the invention comprises the following components, by weight, of 65% to 80% of C1-C4 low-molecule alcohol, 10% to 20% of dipropylene glycol monomethyl ether, 3% to 5% of a phosphate fire retardant and 7% to 10% of C2-C4 low-carbon dihydric alcohol. The degumming agent disclosed by theinvention alleviates adverse problems that a traditional degumming agent is not targeted, has no degumming effect on the back gum or the degumming effect is not obvious so that the glass of the rear cover is easily blued, is not transparent, is scratched and the like. The degumming agent disclosed by the invention can make sure that the overall gum body is completely removed, no gum is retained, the base body of the glass is not damaged, and the adverse problems such as bluing, opacity and / or scratching can be prevented.

Description

technical field [0001] The invention relates to the technical field of degumming of glass back glue, in particular to a degumming agent for removing the back glue of the glass back cover of a mobile phone, a method for degumming the back glue of the glass back cover of the mobile phone, and a glass back cover of the mobile phone. Background technique [0002] At present, many manufacturers have begun to produce glass mobile phone back cover products. The processing technology of the mobile phone back cover usually includes: white glass-cleaning-spraying ink-cleaning-inspection-adhesive-inspection. The glass back is assembled with the rest of the phone. In the process of manual glue sticking, due to improper manual operation methods, it will cause problems such as sticking glue deviation and partial scratches on the product. Therefore, these products need to be reworked for production. Before rework, the glue must be removed first. Work properly. [0003] The general back g...

AI Technical Summary

Problems solved by technology

In the process of manual glue sticking, due to improper manual operation methods, it will cause problems such as sticking glue deviation and partial scratches on the product. Therefore, these products need to be reworked for production. Before rework, the glue must be removed first. Work properly

[0003] The general back glue is a high polymer, and some are resistant to acid, alkali and organic solvents. The existing degumming agents include acid degumming agents, whose main component is concentrated sulfuric acid; alkaline degumming agents, whose main components are hydroxide aqueous solution and organic matter. These degumming agents often have poor degumming effects, cannot be effectively removed, and have no effect on some back glue. This requires the development of more suitable degumming agents to effectively remove the back glue.

[0004] For example, 3M’s H5530B type adhesive is a black assembly adhesive, the main component is acrylic adhesive, which cannot be effectively removed by using traditional degumming agents, and these traditional degumming agents have a high pH and are not environmentally friendly. , it is easy to cause damage to the glass back cover, causing bad problems such as bluish, non-transparent (opaque) and scratches on the back cover glass, which cannot meet the production needs

Images