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What Should You Pay Attention To When The Laminated Glass Is Heated?
Jun 02, 2017

There are two main methods of production of laminated glass: First, the polyvinyl butyral (PVB) film sandwiched between two or more layers of glass, into the autoclave hot pressed, called "film hot pressing method" Or "dry", suitable for industrial production. Second, the preparation of a good binder slurry into the mold has been combined with two or more pieces of glass in the middle, by heating polymerization or light polymerization made of laminated glass, called "grouting" or "wet", due to grouting There are many shortcomings in the production process of the product, the use of less. Commonly used laminated glass is mainly used "dry" production process.

Laminated glass must be heated to the required temperature, the glass surface of the local temperature to be uniform, the difference can not be too large, the appearance of the glass and the middle can not be too much difference.

The heat consumption of a district more than the heating effect, the temperature began to decline in this area, which is overload phenomenon, the success of glass or steel depends mainly on the lowest temperature of the glass, where the electric furnace has an overload phenomenon, the furnace temperature There will be a decline, resulting in glass cooling in the cooling section caused by broken. The heating temperature is set according to the thickness of the tempered glass, the thinner the glass to be tempered, the higher the temperature, the thicker the glass to be, the lower the temperature, the control of the heating temperature, the operator Understand the relationship between the temperature of the furnace and the heating time and the temperature change of the furnace with different thickness, so the author can not clearly point out which temperature setting is best because the choice of temperature is still largely determined by the original glass quality. In addition, the bottom temperature measured by the heating system is not the temperature of the rollers, but the bottom heating element of the tempering furnace compensates for the average temperature of the heat absorbed by the glass on the rollers. For this reason, the measured temperature is generally higher than the measured upper The temperature is higher, so under normal circumstances the upper part of the tempering furnace temperature setting higher than the lower part of the temperature.