Undetstanding of Anti-UV Coating
With a layer of anti-UV coated on the surface during the process of co-extrusion could prolong the lifespan of the sheet. Purpose of the anti-UV coating is to prevent ultraviolet from shining through which could cause the sheet from turning yellowish and ends with crack. Shutter Twin-wall sheet maintains an excellent transparency surface over a period of time compare to others.
The Way of Anti-UV Coating： |
QUV Durable Test：
| Production Mode | Yellowish fig. | Years of Yellowish |
| UV W/o anti-UV | Above △YI 40 | Yellowish in short time |
| UV Stabilize anti-UV | △YI 10~15 | 2 ~ 3 years |
| UV Coating Normal anti-UV | △YI 3~7 | 3 ~ 5 years |
| UV Coating High Performance anti-UV | Below △YI 6 | 10 years & above |
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Sheet with Anti-UV coating not only reduces ultraviolet from transmitting but also protect PC sheet against any harmful damage and prolong properties of Polycarbonate Sheet. Surface of the sheet form a protective force against factory pollution, exhaust emission from vehicles, dust and acid rain stain. It enables the sheet to maintain as new as it is. |
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Co-extrusion with Anti-UV coating on the surface shall effectively blocking harmful ultraviolet rays, protect against ultraviolet from transmitting which cause sheet to crack, turn yellow and effectively maintain physical properties of Polycarbonate. |
