Degumming agent for removing mobile phone glass back cover back glue, mobile phone glass back cover back glue degumming method and mobile phone glass back cover

Abstract

The invention discloses 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 back cover of the glass of the mobile phone and the back cover of the glass of the mobile phone, and relates to the technical field of degumming of the glass back cover. The degumming agent of the present invention comprises the following components according to mass percentage: C1-C4 low molecular weight alcohol 65-80%, dipropylene glycol monomethyl ether 10-20%, phosphate ester flame retardant 3-5% and C2-C4 low carbon 7% to 10% of dihydric alcohol; the degumming method is to use the above degumming agent to soak the mobile phone glass back cover pasted with the back glue. The invention solves the problem that the traditional degumming agent is not targeted, has no degumming effect on the back glue or the effect is not obvious, and easily causes bad problems such as bluish, impenetrable and scratched rear cover glass. The degumming agent of the present invention can make the colloid as a whole completely Falling off, no glue residue, no damage to the glass substrate, and no bluish, opaque and / or scratched rear glass.

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

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