阳光控制功能

Saflex® Solar interlayer is a high visible light transmittance, near infrared (NIR)- and UV-radiation absorbing technology designed to enhance solar heat gain performance, especially when compared to monolithic clear glass and laminates made with conventional clear polyvinyl butyral (PVB) interlayer. When combined with reflective and/or colored glass coatings, it can make for a highly effective solar control solution that is capable of reducing solar heat gain, reducing transmittance of UV radiation and reducing glare.  

Saflex Solar PVB can be used to significantly improve the g-value (a.k.a.: solar heat gain coefficient; SHGC) of façades, even if used in combination with robust solar control coatings. Such a solution reduces the transmittance of UV and much of the near-infrared radiation, while allowing optimal visible light transmittance (VLT). While certain coatings can provide the desired reflected color and overall light transmission, the addition of Saflex Solar interlayers improves the luminous efficacy (ratio of light transmittance to the g-value). 

In certain applications, commercial solar control coatings alone may not be sufficient to reduce the g-value to the desired level while keeping an acceptable visible light transmission. Saflex Solar, when combined with these type of coatings, can reduce g-values 0.1 to 0.17unit points further while reducing VLT by only 5-- 10%. 

Combining solar interlayers with coatings has been done for decades. Validation of compatibility for individual coating types should be approved by the coating manufacturer.  Variables such as glass type choice, permanence of adhesion, and other durability characteristics should be considered when assessing overall performance. For example, solar PVB does not contribute significantly to solar performance in insulating glass units where high performance selective solar control coatings are used. 

The use of Saflex Solar can also be effective with low-e pyrolytic coatings.  This is an effective tool in laminated glass design especially in regions where advanced solar control coatings may not be widely available. In addition, Saflex Solar interlayers are ideal for curved glass applications, where low-reflectance is desired and when a consistent reflected color at angle is required of the glazing.

Choosing the right Saflex Solar combination provides several options, please contact your regional representative for assistance or more details.