Glue bonding after the emergence of several kinds of debonding situation

Degluing after glue bonding is a common process problem, mainly caused by environmental factors, operational errors, and material mismatch.

 

Often people consult that, “why the material spray bonding, after a period of time will be the case of product deglossing, what is the reason for this?”
In fact, if the purchase of good quality glue in accordance with normal circumstances, the material bonding basically will not appear after the case of degumming. And if it really produces degumming, the main a few factors caused by：

 

1, the sun is easy to deglue

If your product after bonding, in the sun under the production of deglossing words, it means that you buy the glue UV light resistance is poor, this situation can only be avoided by avoiding your products in the sun or replace the other models of glue.

 

2, easy to deglue after heating, one side of the glue, one side without glue

In this case, there are two main factors: First, the amount of glue is not enough to glue; Solution: according to the normal amount of glue to operate. Secondly, poor heat aging resistance; Solution: strengthen the adhesive force or replace other types of glue.

 

3、Part of the bonding is good, part of the bonding is bad.

 

 

This case of degumming is mainly caused by the incorrect way of operation.
Solution:
(1) uneven spraying, accumulation of glue - adjust the gun air pressure, distance, spraying as uniform as possible;

(2) uneven spraying, lack of glue - adjust the gun air pressure, distance, spraying as uniform as possible;

(3)not dry bonding (the main problem occurs in winter) - to be glue dry before bonding, generally 1-5 minutes.

(4)both sides of the adhesive deglossing

General two-sided adhesive debonding is relatively rare, because both sides of the brush glue, then sticky is very strong. This situation also produces degumming, mostly for the following cases:

Partially pressurized when gluing, partially not; Solution: try to pressurize all when gluing.
Not dry bonding, accumulation of glue; Solution: to be glue dry before bonding, generally 1-5 minutes.
Bonding too slow, missed the bonding time; solution: bonding at the time.

 

TDL is a large aerosol adhesive manufacturer in Asia with R&D, production and sales.
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