Why does the protective film appear white fog?

Now the fast drying glue can not put an end to this kind of whitening phenomenon, we have also encountered this problem, our solution is silicone glue, put in a ventilated place with a fan after 2H, and then it is fully dry in the product packaging gift box, so that there is basically no white fog. This is a common phenomenon!!

There may be the following reasons for whitening of quick-drying silicone glue:

1. glue water control is not good, leading to bleaching
2. The air in the working environment is too stuffy and not ventilated enough. Because the quick-drying silicone glue is cured by moisture, the white fog left behind will cause bleaching in the process of curing.
3. In addition, the glue whitening itself is more serious. If you want to solve this problem, there are many ways to solve it.

In the face of quick-drying silicone glue whitening phenomenon you can try:

1. Depending on the bonding surface, control the amount of glue, if it is manual operation, try to change to machine control
2. Make ventilation points for the indoor environment
3. Convenient can add accelerator UV glue can not be used and to use the quick-drying silicone glue + accelerator to solve the problem of bonding, whitening is really a headache, this is because of the curing basis of the quick-drying silicone glue, its curing needs wet air but not too much, if less strength is not enough, more there is white fog, So low white fog product strength is not high, but from the current point of view this is a worldwide problem, only the accelerator + glue is the best method at present, of course, the number of white fog or depends on the operator’s technology, can not be generalized.

PU protective film is normally more stable than silicone protective film and acrylic protective film, but there are still some customer feedback pu protective film will appear white fog phenomenon. Pu protective film white fog is the root cause of precipitation, precipitation refers to the molecular weight is too small, with the change of time to penetrate into the surface of a phenomenon, electrostatic agent is a very small molecular weight of a substance, because of the influence of environmental relations, or the amount of electrostatic agent is not well controlled, there may be precipitation phenomenon; There is also a situation that the instability between the glue and the original film caused by the precipitation of water molecules, when the water meets the oil glue, because of the incompatible principle, there may be a phenomenon of white fog.