Life of Laminated Glass
Laminated glass is two pieces of glass sandwiched between one or more layers of organic polymer interlayer, through the process, the glass and the interlayer of the permanent bond as one of the composite glass products. Laminated glass even in the case of broken glass fragments will be stuck to the film, effectively prevent the debris and piercing through the fall incident, to ensure personal safety.
The life of laminated glass mainly depends on the interlayer of the material. Normally wet sandwich glass and EVA laminated glass are mainly used for indoor partition, not for building doors and windows or curtain wall. Wet sandwich glass and EVA laminated glass in the sunlight will accelerate aging, 1-2 years after the phenomenon of yellowing, 2-3 years began to degumming bubbles, ice and fog situation. In general, wet sandwich glass aging faster than the EVA laminated glass much faster. EVA laminated glass to avoid direct sunlight in the indoor use can have more than 10 years of life.
PVB and SGP laminated glass, which are commonly used as doors, windows or curtain walls, are much more resistant to aging. Laminated glass PVB and SGP the most typical failure is to open the plastic, open plastic means that the glass and the separation layer, the loss of the safety characteristics of laminated glass. PVB and SGP on the life of laminated glass, there is no relevant standards and norms. At present, the domestic glass processing enterprises generally refer to foreign PVB and SGP-related material suppliers to give 5-7 years of product warranty period.
In fact, PVB and SGP laminated glass life, in addition to the impact of materials by the middle layer, by the thickness of the middle compartment, laminated glass substrate quality, laminated glass process control is very large.