Why is a long time to open plastic glue, why have bubbles.
Glass is also known as laminated glass. English name Laminated Glass, laminated glass is two or more pieces of float glass intermediate folder with tough PVB (ethylene polymer butyrate) film, by pressing the hot press together as much as possible to discharge the middle of the air, and then put Into the high-pressure steamer within the use of high temperature and pressure will be a small amount of residual air into the film made of. In order to facilitate the higher requirements of customers and designers, can provide a variety of PVB film for customers to choose to see (transparent, white, gray, porcelain white, blue, green, silk screen, etc.).
Is not it authentic?
One is grouting,
One is film,
After the species is much better than the former,
There is a bubble may be the original glass when the glass curvature is too large, the film does not melt the air after the discharge, so there are bubbles ~ as there are bubbles, open plastic, it is difficult to appear ~
