Introduction: Laminated glass—as a critical material—plays a pivotal role where performance directly impacts product longevity and user experience. As a specialized manufacturer of EVA interlayer films, we consistently drive innovation to deliver high-performance, stable solutions. Recently, our Brazilian client conducted comprehensive testing of our EVA films, with results far exceeding expectations! We are now sharing the tested product categories and invite more partners to provide your inquiry and chance to co-operate!
This evaluation was commissioned by the client and conducted by a third-party authoritative institution, covering four critical parameters: light transmittance, adhesive strength, weather resistance, and processing adaptability. The results are as follows:
With a light transmittance of up to 91%, our EVA intermediate film delivers exceptional clarity and immersive experience. At a wavelength of 550nm, the transmittance reaches 91%, approaching the theoretical limit. This performance meets the natural lighting requirements of high-end architectural curtain walls, enhancing the market competitiveness of our products for clients.
Adhesion strength exceeding 25N/mm²: Safety protection, rock-solid durability. Through extreme temperature cycling tests from-40°C to 85°C, the interlayer film's adhesion strength to glass consistently remained above 25N/mm², far surpassing industry standards. Even under strong wind pressure, hail impact, or prolonged ultraviolet exposure, laminated glass maintains structural integrity, providing reliable assurance for building safety and stable photovoltaic system operation.
Weather resistance exceeding 10 years: Resistant to aging, maintaining pristine appearance. Through QUV accelerated aging tests simulating 10 years of outdoor exposure, the intermediate film showed no yellowing, delamination, or bubble formation, with light transmittance degradation rate below 3%. This performance significantly extends the service life of laminated glass, reduces subsequent maintenance costs for customers, and makes it an ideal choice for long-term projects.
Excelling in processing adaptability: Cost reduction and efficiency enhancement enable effortless production. Field tests on customer production lines demonstrated that EVA intermediate film exhibits outstanding leveling and exhaust properties, effectively reducing lamination cycle time by 15% and increasing yield rates to 99.2%. This advantage significantly helps customers lower energy consumption and scrap rates, achieving dual improvements in efficiency and profitability for large-scale production.
Customer Testimony: "The test data exceeded expectations, particularly in weather resistance and processing stability, which completely resolved the long-standing product pain points for customers. Currently, the material has entered mass production phase, with excellent feedback from end-users and continuously rising repurchase rates!"
Why choose us?
With 20 years of EVA material R&D experience, we deliver tailored formulations for diverse applications including architectural curtain walls and automotive glass, meeting clients' varied needs. End-to-end Quality Assurance: Implementing ISO 9001 quality management systems throughout the supply chain from raw material procurement to production and shipment, ensuring consistent product performance. Rapid Response and Full-Spectrum Support: Offering complimentary sample testing, production line debugging guidance, and post-sales technical support to accelerate R&D cycles and secure market advantages.
Action Call to Action: Collaborate for Shared Success and Efficient Partnership. Starting today, consulting clients can receive a free test sample (including customized formulation services) .Contact us at info@sourceglas.com
Post time: Mar-25-2026