1, the use of glue ratio is not suitable or bad, resulting in tearing off the protective film appears a lot of residual glue and degumming.

2, the protective film without corona or corona is insufficient, resulting in the adhesion of the adhesive layer to the protective film is poor, tearing the film, the adhesion between the adhesive layer and the plate is greater than the adhesion between the adhesive layer and the original film, the phenomenon of degumming transfer.

3, adhesion mismatch, the adhesion between the adhesive surface of the protective film and the surface of the product is too high, so that the adhesive layer is destroyed, detached from the PE film, deglossing transfer.

4, the surface of the affixed object has a residual solvent that can react with the adhesive layer of the protective film, resulting in the protective film is difficult to tear or degumming.

Protective film residual adhesive problem: protective film residual adhesive has been a headache for the coating industry, protective film residual adhesive and protective film peeling force has a great relationship. Want to solve the residual glue problem, from the peeling force of the protective film as a starting point. The stronger the adhesion, the worse the peeling force strength may be, the poorer the quality of the adhesive, the worse the peeling force strength.

Solution: When there is a problem with adhesion between the substrate and the glue, you can use some additives to increase adhesion . How is the quality of the glue itself? Generally through the high and low temperature alternating heat and humidity test, can not pass is not good weather resistance. Adjust the amount of adhesive, coating parameters, aging process to see if there is any improvement, not if you change the glue.

Protective film deglossing problem: After use, peel down the protective film will be deglossed to stay on the profile products, there are a variety of possibilities for this kind of problem, the biggest possibility is that the protective film products with the pressure adhesive does not comply with the provisions of the regulations, that is, it is too viscous, resulting in the protective film products in the peel, the external tension is greater than the internal stress, and residual on the profile.

Solution: If the user has this problem, you can use a clean rag dipped in a little alcohol, the residual glue for repeated rubbing, until the glue is wiped clean, but we need to pay attention to is in the rubbing time do not be too hard, or it may affect the finish of the profile products.