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How many layers of glass are required for soundproof glass?


Sound insulation glass is a kind of glass product that plays a certain role in shielding sound. It is usually laminated glass with double-layer or multi-layer composite structure or medium glass with special material. Attenuation plays a key role, and glass products with sound insulation include laminated glass, insulating glass, vacuum glass, etc.
In terms of sound insulation performance, traditional insulating glass has a good sound insulation effect on medium frequency noise (such as the voice of people talking, etc.), but the effect on low frequency traffic noise (such as bus engine noise, train noise, airplane noise, etc.) is not obvious. , because the air cavity of the insulating glass will resonate with the low-frequency noise of the outside world in the low-frequency region, and the low-frequency noise can easily enter the room through the glass.

The glass configuration of the current aluminum alloy doors and windows is mostly double-layer hollow tempered glass, and the sound insulation effect is already very good. Nowadays, many consumers are pursuing higher configuration. I heard that there are three layers of insulating glass now, and I want to ask how many layers of glass are needed for sound insulation glass?

At present, the configuration of aluminum alloy doors and windows basically uses 5+9+5 or 5+12+5 insulating glass, which is an air gap of 9mm or 12mm between two layers of 5mm glass, because the conductivity of glass and air is different. In the same way, it has the effect of heat preservation and sound insulation.

Almost all of the broken bridge aluminum profile doors and windows use such insulating glass.

For three-layer insulating glass, such as 5+6A+5+6A+5, the thickness of the intermediate air layer is reduced, and an additional layer of glass is added. It stands to reason that the sound insulation of glass mainly depends on the thickness of the air layer of the insulating glass.

The sound insulation effect of the two needs to be measured by precise experiments.

Therefore, consumers' view that the sound insulation effect is good only based on the number of glass layers is very one-sided. The quality of the broken bridge aluminum doors and windows does not depend on several layers of glass, but has a great relationship with the thickness of the gap between the glass. In addition, the sealing performance of doors and windows also has a great impact on sound insulation. If triple-layer glass is used, the sealing process of window sashes is more demanding, and improper handling will also seriously affect the performance.

Of course, three glass is a double-layer hollow, and the temperature and sound insulation effect is much better than that of ordinary hollow. Generally, it is used more in the three northeastern provinces or alpine regions, and the temperature and sound insulation effect is much better than that of ordinary hollow. Therefore, three-layer insulating glass and double-layer insulating glass have their own advantages. When installing broken bridge aluminum doors and windows, you should choose according to your own budget and the actual situation of each region.