PHYSICAL PROPERTIES |
TEST METHOD |
VALUES (ENGLISH) |
VALUES (METRIC) |
Basis Weight |
Scale |
24 lbs / 1000 ft² |
117 gm / m² |
Permeance (WVTR) |
ASTM E96 Procedure A |
0.02 perm(grains/hr.ft².in Hg) |
1.15 ng / N.s |
Bursting Strength |
ASTM D774 |
60 psi |
4.2 kg / cm² |
Puncture Resistance |
ASTM C1136 |
85 beach units |
2.5 Joules |
Tensile Strength |
ASTM C1136 |
55 lbs/inch width (MD) 35 lbs/inch width (XD) |
9.6 kn / m (MD) 6.1 kn / m (XD) |
Caliper / Thickness |
Micrometer |
0.008 inch |
203 micron |
Accelerated Aging |
30 Days @95% RH, 120°F (49°C) |
No Corrosion No Delamination |
No Corrosion No Delamination |
Low Temperature Resistance |
ASTM D1790-40°F (-40°C) |
Remains Flexible No Delamination |
Remains Flexible No Delamination |
High Temperature Resistance |
4 hours @240°F (116°C) |
Remains Flexible No Delamination |
Remains Flexible No Delamination |
Water Immersion |
24 hours @ 73°F (23°C) |
No Delamination |
No Delamination |
Mold Resistance |
ASTM C665 / C1338 |
No Growth |
No Growth |
Dimensional Stability |
ASTM D1204 |
0.25% |
0.25% |
Light Reflectance |
ASTM E308 |
62% |
62% |