with Palram Clear Sheets

Abrasion Resistance
No glazing material is totally resistant to abrasion. Glass is superior with respect to this property. The other materials
have values decreasing in order of their ranking. See Figure 6. Note that PAL-G is made from a self-healing material.
Slight scratches can be heat polished with the aid of a hair dryer or heat gun. Further details appear in PAL-G literature.
A special PALSUN product, PALGARD, is manufactured with a special coating that results in a resistance to abrasion
approaching that of glass.
Figure 6 - Hardness of Glazing Materials
Value of glass is
approximately 600
on C Scale. Many
orders of
magnitude larger
than values for
Palram sheets.
200
180
160
Rockwell R Scale
140
120
100
80
60
40
20
0
PALSUN SUNLITE PALCLEAR
UV
PALGLAS
PAL-G
UV
Glass
Product
Service Temperature Range
Both PALSUN and SUNLITE polycarbonate sheets share
with glass the ability to withstand any temperature
naturally occurring on the face of the planet. PALGLAS
is suitable up to 80 °C. PAL-G is suitable from -20 °C
up to 60 °C and PALCLEAR is suitable from 0 °C up to
50 °C.
Chemical Resistance
No material exists which is resistant to every chemical.
Glass is attacked by strong alkali or fluorine based
compounds. Among plastic materials, PVC resists attack
by the widest range of chemicals. But there are chemicals
that will attack PVC, which won't attack polycarbonate.
It is therefore best to consult with your Palram distributor
in cases where chemical resistance is critical.
Cold Curving
All the materials mentioned above, with the exception
of glass, can be curved upon installation. Attaching the
sheets to an arched frame will accomplish this. The
restrictions on radius of curvature are listed in the
brochures for each respective material. Here again,
note that glass must be cast to the required radius of
curvature.
This property is extremely useful for creating domed or
tunnel skylights as well as curved windows. (Note that
Palram offers clear SUNTUF corrugated polycarbonate
sheet for creating skylights within any type of corrugated
roofing.)
Thermoformability
Thermoplastic flat sheet can be shaped or bent by a
process that is called thermoforming. Glass may be
bent when heated, but other types of forming must be
carried out when the glass is cast. All other factors being
equal, PAL-G is the sheet, which is easiest to thermoform.
No pre-drying is required. PVC also does not require
pre-drying. The rest of the materials do. Additional
documentation is available upon request.