Switchable Glass Producing Process

Switchable glass also known as dimming glass，is a new type of special optoelectronic sheet glass product which combines liquid crystal film into two layers of sheet glass and is laminated by high temperature and high pressure. The user controls the transparent and opaque state of the flat glass by controlling the on and off of the current. The switchable glass itself not only has the characteristics of all safety glass, but also has the privacy protection function to control the transparency of the sheet glass. Due to the characteristics of the liquid crystal film interlayer, the dimming glass can also be used as a projection screen instead of the ordinary screen to present a high-definition picture on the float glass.

Working principle

When the switchable glass is turned off, the liquid crystal molecules inside the electronically controlled dimming glass will exhibit an irregular dispersion state. At this time, the electronically controlled flat glass exhibits a transparent and opaque appearance state; when the dimming glass is energized, the liquid crystal inside The molecules are neatly arranged, and the light can be freely penetrated. At this time, the dimming glass is instantly transparent.

Control method

The control mode of the switchable glass includes manual lighting, manual dimming, light control dimming, voice-activated lighting, temperature-controlled lighting, remote control switch, remote network control.It can be combined according to customer requirements.

Detailed explanation of several processing methods for dimming glass

1. One-step vacuum forming method. The equipment has a simple structure, but there are very few equipments that can make dimming glass. The processing technology seems to be simple, but the accuracy of temperature control is very high in the actual operation process, and the waste phenomenon that occurs will be bubbles, tackless, fog. Due to the high production cost of dimming glass sheets, the capacity of processing waste should not exceed one percent. Therefore, non-standard enterprises and enterprises whose technical capabilities cannot achieve precise control generally do not dare to use this method to produce switchable glass. At present, there are very few manufacturers in China who have mastered the essence of "one-step" dimming glass processing. However, the dimming glass finished by this method has a long service life and relatively stable performance.

2. Processing with autoclave. The previous process of autoclave processing is actually similar to one-step processing, and later it is formed by autoclaving at high pressure and high temperature. Autoclave processing can effectively avoid bubbles, open glue and other phenomena, but the shortcomings are also obvious, because the pressure of the sheet glass formed by the autoclave is twice as high as that of the one-step vacuum molding, and the conductive film of the main interlayer material of the dimming glass is caused by the shrinkage rate. The conductive coating is broken or the resistivity is increased, so that the performance and service life of the finished switchable glass are greatly shortened.

The autoclave molding method must be used exclusively for equipment for dimming glass. It is precisely suitable for the characteristics of dimming glass. Unfortunately, at present, there are very few manufacturers in China, most of which are mixed with conventional laminated glass. The frequent parameter adjustment of the autoclave is guaranteed. It is not easy to damage the equipment without the parameter requirements of the dimming glass.

3. The water bath method is to immerse the sealed jig in a 100-degree water tank. The temperature of various processing processes is the most accurate and uniform, but the manufacturing of the jig is very difficult, and only used by Japanese manufacturers.