Acoustic laminated safety glass is manufactured with a special vinyl interlayer that offers better sound control than traditional polyvinyl butyral (PVB) interlayers. The sound control rating of glass is expressed as a weighted sound reduction index (Rw) measured in decibels (dB). Conventional laminated glass with a single normal strength (NS) vinyl interlayer is rated at 33dB.
A high penetration resistant (HPR) interlayer can improve the rating to 34dB. Acoustic laminated with a 0.76 mm HPR interlayer is rated at 38dB and provides a noticeable improvement in sound reduction. Acoustic laminates also works better at lower temperatures because the Acoustic interlayer retains its sound reducing properties better than traditional PVB interlayers. In addition to a better weighted sound reduction index, Acoustic laminates offer superior dampening across the coincidence dip – a frequency range in which glass of a specific thickness typically becomes more transparent to sound waves.
Acoustic Laminated Glass
Suggested applications
Acoustic laminates can be glazed into standard aluminium, wooden or specialist frames to control noise from a variety of sources, including aircraft, road traffic, music systems, public events, schools and other busy institutions.
Options and sizes
Acoustic laminates are available with any of the coloured vinyl interlayers and glasses in the ColourVue™ range. Acoustic laminates can also be manufactured with any SolarVue™, SolarShield or CoolVue® coated products.
Acoustic PVB Sound Transmission Loss
To put these values in context, one must bear in mind that every 10dB difference in sound pressure level represents a halving or doubling of the perceived noise. Therefore it can be assumed that every db difference represents approximately 10%.
As 4mm float has an average STL of 29dB, it can be said that 6.76mm Acoustic Laminate is 7dB better i.e. 70%. 8.76mm Acoustic Laminate would be 90% better than 4mm float.
It is important to remember that these acoustic values are very dependent on the frequency of the noise source, and that low frequency noise tends to be structure borne, and is extremely difficult to insulate against. Examples of low frequency noise would be jack hammers, exhaust brakes of trucks, bass music etc. We also need to take into account that certain noise will come through the actual frames of the doors and windows where they close.
LAMINATED PRODUCT RANGE
COLORVUE
ColourVue™ laminated glass products are made from various combinations of clear and tinted glasses and PVB interlayer. ColourVue™ is available in a wide range of colours to meet a variety of aesthetic, glare reduction and solar control demands. Coloured and patterned interlayers can be used individually or in various combinations to create colourful and distinctive glass facades, partitions and interiors.
SOLARVUE
SolarVue™ provides medium solar control and a neutral, low reflective appearance in a range of colours. A thin deposit of nickel and chromium eliminates more than 55% of solar heat, while transmitting more than 45% of visible light. SolarVue™ also eliminates more than 99% of damaging UV radiation.
SOLARSHIELD
SolarShield® makes it possible to create attractive buildings with highly efficient solar control. The combination of a metallic coating and a clear or tinted PVB (polyvinyl butyral) interlayer is designed primarily to keep out as much of the sun’s heat as possible. In addition to reducing solar heat, SolarShield® also limits the amount of light entering the interior and blocks up to 99% of damaging UV radiation.
COOLVUE
CoolVue® glass meets the growing demand for natural day lighting and building transparency, without the heat gain associated with ordinary clear glass. CoolVue® can transmit more than 70% of visible light while blocking more than 50% of solar heat.
E-RANGE
E Range™ coated monolithic glass offers superior thermal insulation in standard frames designed for single glazing. E Range™ products reduce heating and air-conditioning costs by keeping more heat in during winter and blocking it out during summer.
ACOUSTIC GLASS
Acoustic laminated safety glass is manufactured with a special vinyl interlayer that offers better sound control than traditional polyvinyl butyral (PVB) interlayers. The sound control rating of glass is expressed as a weighted sound reduction index (Rw) measured in decibels (dB).