WMP-Retro
POLYPROPYLENE / SCRIM / KRAFT / GLASS MAT / FOIL
Tentative Specification
| FACING COMPOSITION | DESCRIPTION | VALUES (ENGLISH) | VALUES (Metric) |
|---|---|---|---|
| White Film | Metallized Polypropylene | 12.5 lbs / 3000 ft2 | 20 g / m2 |
| Adhesive | Flame Resistant | ||
| Reinforcing | Tri-directional Fiberglass/Polyester | 5 / inch (MD) 5 / inch (XD) | 20 / 100 mm (MD)
20 / 100 mm (XD) |
| Kraft | Natural | 30 lbs / 3000 ft² | 49 g / m² |
| Adhesive | Polymeric | ||
| Mat | Fiberglass | 27 lbs / 3000 ft² | 44 g / m² |
| Foil | Aluminum | 0.0003 inch | 7.6 micron |
| PHYSICAL PROPERTIES | TEST METHOD | VALUES (ENGLISH) | VALUES (Metric) |
|---|---|---|---|
| Basis Weight | Scale | 44 lbs / 1000 ft² | 215 g / m² |
| Permeance (WVTR) | ASTM E96 Procedure A | 0.02 perm (grains/hr. ft². in Hg) | 1.15 ng / N.s |
| Bursting Strength | ASTM D774 | 75 psi | 5.3 kg / cm² |
| Tensile Strength | ASTM C1136 | 70 lbs/inch width (MD)
60 lbs/inch width (XD) | 12.3 kn / m (MD)
10.5 kn / m (XD) |
| Caliper / Thickness | Micrometer | 0.020 inch | 508 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 C523 | 85% | 85% |
| FIRE TESTING | ASTM E84 White Side |
|---|---|
| Flame Spread | 15 |
| Smoke Developed | 35 |
Physical Properties based upon statistical averages, Weight / Thickness +/- 10%