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Eastman is helping advance the future of glazing for electric vehicles (EVs) with the launch of Saflex Evoca RSL, the first product under the Saflex Evoca platform. This new rigid acoustic PVB interlayer was created for EV sidelite applications, offering enhanced design flexibility to achieve a more optimal balance between acoustic comfort and door system weight.

Saflex Evoca RSL not only enhances acoustic performance but also provides the stiffness required for frameless and flush sidelite designs, giving OEMs and glass suppliers more design freedom. With the increasing focus on acoustic laminated door glazing in EVs, Saflex Evoca RSL addresses the critical need for effective wind noise reduction. These benefits are achieved while maintaining thinner glazing configurations that can help reduce overall vehicle weight and help extend driving range.

 "Saflex Evoca RSL offers between 20% and 40% higher stiffness, depending on glass thickness, and a 2.5 dB improvement in high frequency noise damping above the coincidence frequency compared to standard acoustic laminated glass,” said Hemant Dandekar, Eastman's global commercial director of automotive for advanced materials, interlayers. “It was engineered to elevate the standard for EVs and meet the growing demands for design flexibility without compromising on efficiency, comfort or acoustic performance."

Key features and benefits of Evoca RSL include: 

• Rigid skin layers that provide additional stiffness, enabling frameless sidelite designs and thinner glass without adding weight
• High-damping acoustic core layer, which compensates for thinner and asymmetric glass configurations to improve the balance between acoustics and glazing weight 
• Optimized sheet properties to simplify the door glass lamination processes with high dimensional stability and optimal de-airing performance

As the first new product launched under the Saflex Evoca platform, Evoca RSL reinforces Eastman's commitment to next-generation EV glazing design solutions. By enhancing design freedom, acoustic comfort and vehicle efficiency, Eastman offers a more sustainable and innovative approach to EV glazing.

For more information about Saflex Evoca RSL, visit