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Soundproofing

Sound proof

PVB films can reduce amplitude of sound to penetrate through glass, which block noise outside effectively, enhancing sound proof effect. PVB interlayer films can provide a quiet work place or private space in noisy environment or public place.
The soundproofing PVB film structure is expressed as followed
The sound proof PVB film structure is expressed as follow

Levels and specification

To use numerical values to indicate sound proof ability of material, American Society for Testing Materials (ASTM) proposes the sound transmission class (STC) (Unit: dB) as a benchmark. The higher the STC values are, the greater the sound proof effect is.
Glass types Thickness STC
Ordinary single piece of glass 10mm 35dB
Laminated glass 5mm+0.76PVB+5mm 40dB
According to the table, the STC of a laminated glass is 5 dB higher than of an ordinary single piece of glass. What does 5 dB mean? The value of 5 dB means a sound sends out at the same distance and volume but is heard at a difference distance of 50 m.
PVB FILM soundproofing

Famous buildings that use high sound proof PVB films as interlayers of laminated glass

Buildings Country City Application Install Location
Heathrow Terminal (Airport) UK London Reducing aircraft noise Glass windows on external walls
Leuven Institute of Technology (Library) Belgium Leuven Reducing noise Glass windows on external walls
Yokohama City University (hospital) Japan Yokohama Reducing noise Glass windows on external walls
Ministry of Finance, Academy of Banking and Finance (academy) Taiwan Taipei Reducing noise Glass windows on external walls
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