Larger glass surfaces that create a feeling of openness are proportional to the intrusion of heat and air conditioner operation. It is therefore necessary to shut out solar heat to gain a balance between comfort and environmental protection. With a higher proportion of building surfaces covered in glass, the use of laminated glass for safety and security is increasing, resulting in a heightened demand for solar control properties in recent years.

Traditional interlayer film filters out more than 99% of ultraviolet rays, but almost all heat rays get through. S-LEC SCF filters out much of these heat rays in addition to ultraviolet rays.
Test results have shown that using a windshield fitted with the S-LEC SSF intermediate membrane reduces the temperature of the steering wheel, which often becomes unbearably hot in a packing lot in summer, by around 10 degrees when compared with standard windshields.

Traditional heat-reflecting glass with a metallic coating reflects radio waves, as well as heat, and could impede mobile phones and electronic toll collection (ETC) signals.
S-LEC SCF does not block radio waves across most frequency bands, so drivers and passengers can stay in touch while on the go.