Soundprufe (laminated sound control safety glass)

• 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 34 db.
• Soundprufe with a 0.76 mm HPR interlayer is rated at 38 db and provides a noticeable improvement in sound reduction. Soundprufe also works better at lower temperatures because the Soundprufe interlayer retains its sound reducing properties better than traditional PVB interlayers.
• In addition to a better weighted sound reduction index, Soundprufe offers superior dampening across the coincidence dip – a frequency range in which glass of a specific thickness typically becomes more transparent to sound waves.