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Kuraray™ Butacite® and Butacite® G Polyvinyl Butyral (PVB) Interlayers

Kuraray™ Butacite® and Butacite® G polyvinyl butyral (PVB) thermoplastic sheet materials are tough, resilient safety interlayers used in laminated architectural and automotive glass.   

Kuraray is a leading worldwide supplier of polyvinyl butyral (PVB) safety interlayers for use in laminated glass, and the only manufacturer offering high-quality PVB interlayers in a choice of either virgin (Butacite®) or 100% post-industrial recycled (Butacite® G) materials. In automotive applications, Kuraray™ Butacite® and Butacite® G interlayers add to vehicle safety by helping retain glass fragments in case of glass breakage. Because the interlayer is flexible and resilient, it also helps absorb impact and thus reduce head trauma in the event of a crash. The interlayer is clear or tinted, and can be supplied with tinted shade bands to reduce solar gain in vehicle cabins. In architectural applications, Kuraray™ Butacite® and Butacite® G PVB interlayers offer similar safety advantages by retaining dangerous shards in case of glass breakage. They are commonly used safety glass interlayers available worldwide in clear, translucent white and several other popular solid tints for aesthetic effects or control of light transmittance.

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A More Structural Glass Interlayer: Kuraray DuPont™ SentryGlas®

Kuraray DuPont™ SentryGlas® ionoplast interlayers help create lighter, safer, more structural glass that can stand up to greater loads and higher threat levels. Taking advantage of the interlayer's extra rigidity and toughness, structural glass systems — from floors and stairs to balcony rails and minimally supported glass canopies — can enjoy new design freedom. Superior strength, lasting beauty The SentryGlas® interlayer is five times stronger and up to 100 times stiffer than conventional laminating materials. With this kind of strength the glass can be a more active structural element in the building envelope, opening up design possibilities that didn’t exist before. Besides its strength, SentryGlas® retains its clarity – even after years of service. Unlike other interlayers, SentryGlas® is much less vulnerable to moisture exposure or yellowing over time. Limitless possibilities.

Some of the many Kuraray DuPont™ SentryGlas® applications include:

  • Hurricane resistant windows, doors and skylights

  • Bomb blast resistant windows, doors and facades

  • Minimally supported and open-edged railings, facades and canopies

  • Structural glass flooring, stairs, walkways and pedestrian bridges

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