Palram PALGAR - Manual (Page 8)

PALSUN® PALGARD™
Glazing Guide
8
6. PALSUN® & PALGARD™ Optical Characterization & Properties:
a. Blocking UV Radiation: All the siblings of the solid polycarbonate sheets family block practically all
the destructive & harmful UV radiation range (250 to 400 nm), and a considerable part of the long-
wave far IR (Infra-Red) heat radiation range (see graph 1).
b. Visible-Light Transmission: In this 400 to 800 nm wavelengths range a typical clear, colorless PALSUN
(or the two others) will transmit about 87 to 91 percent of the incident visible light radiation.
c. Light-Transmission as a Function of Sheet Thickness: Percentage of light transmission drops slightly
& linearly with each gradual increase in thickness (see graph 2).
Graph 1. % Light Transmission of PALSUN &
PALGARD Sheet (3 mm) Versus Wavelength
Graph 2. PALSUN & PALGARD Sheet % Light
Transmission Versus Sheet Thickness