| Sr.no. |
Property
|
Unit
|
Test
Method |
Typical
Values |
| |
General |
|
|
|
| 1. |
Thickness |
Micron
|
GPL Method |
12 |
| 2. |
Yield |
M2/Kg
|
GPL
Method |
56.7
to 62.6 |
| 3. |
MVTR |
gm/m2/24hrs |
ASTM-E-96
38o C 90%RH |
1.0 |
| 4. |
Oxygen Transmission Rate |
cc/m2/24
hrs |
ASTM-D1484
38oC 45%RH |
Less than 1 |
| |
Mechanical |
|
|
|
| 1. |
Tensile strength (MD
/ TD)
|
Kg / mm2
|
ASTM-D-882 |
Minimum
18 |
| 2. |
Elongation
at break
(MD / TD) |
%
|
ASTM-D-882 |
Minimum
80 |
| 3. |
Tear Strength |
gm
|
ASTM-D-1922 |
7-9 |
| 4. |
Surface Tension |
Dynes/cm |
ASTM-D-2578 |
Mettalised side 54(Min)
Unmetallised side 40(Min) |
| |
Optical |
|
|
|
| 1. |
Optical
density |
---
|
GPL
Method |
2
to 2.3 |
| |
Thermal |
|
|
|
| 1. |
Thermal Shrinkage@
150o C 30 min |
|
ASTM-D-1204 |
|
| |
MD |
%
|
|
2(Max)
|
| |
TD |
%
|
|
2(Max)
|
| |
Roll |
|
|
|
| 1. |
Core
Size (I.D) |
mm
|
GPL
Method |
76/152 |
| 2. |
Std.
Length |
Mtrs
|
GPL
Method |
6000 |
| 3. |
Std. Width |
mm
|
GPL Method |
25 to 1600 as per requirement |
| 4. |
Width Tolerance |
mm
|
GPL Method |
+/-2 in the absence of customer
specified tolerance |
