Full Product Manual

Lexan* Thermoclear* Plus sheet has on two sides
proprietary UV-protected surface, giving superior
resistance to outdoor weathering.
This unique protection help to provide long-term
optical quality under intensive UV exposure,
and maintains the superior toughness of the
polycarbonate material in comparison to other
thermoplastic glazing.
According to accelerated 4,000 hours weathering
tests (figure 1) (DIN53387 / ASTM G26) that
have been carried out at SABIC Innovative Plastics
Laboratories, Lexan Thermoclear sheet is superior
to other available polycarbonate multiwall glazing
products. This test is comparable to 10 years
outdoor exposure in moderate climate conditions.
Lexan Thermoclear offers a ten year limited
written warranty against discoloration, loss of light
transmission and loss of impact strength due to
weathering.
The photos presented here show 3 polycarbonate
multiwall sheet samples displaying 3 levels of
Yellowness Index
Sample 1: Yellowness Index of 0 ∆
(Reference sample = original value)
Sample 2: Yellowness Index of 2 ∆
compared to the original value
Sample 3: Yellowness Index of 10 ∆
compared to the original value
Yellowness Index measurement is performed
according to ASTM D1925 (1977) test. The limited
written warranty states that Lexan Thermoclear Plus
sheets (in a clear color) will not display a change
in Yellowness Index of more than 2 ∆ (sample 2)
compared with their original value (sample 1),
whereas most of other PC mutiwall sheet producers
warrant that their sheets will not display a change
in Yellowness Index of more than 10 ∆ (sample 3).
Please consult your local distributor or SABIC
Innovative Plastics Sales Office for more details.
Sample 1 - ∆ Yi = 0
Sample 2 - ∆ Yi = 2 - Lexan Thermoclear Plus sheet warranty
Figure 1
Yellowness index through weathering
Delta yellowness Index (16mm)
Weathering time (hours) by Xenon 1200 (DIN53387 test)
Un-protected PC
multiwall sheet
Typical product from
competition using
co-extusion
Lexan Thermoclear
Plus
UV protection
Sample 3 - ∆ Yi = 10 - Typical Multiwall PC sheet warranty
SABIC Innovative Plastics 3