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From [Institution name]
Property | Unit | Requirement |
---|---|---|
Length | – | Not less than specified |
Width | – | Not less than 99% of specified |
Tensile strength, machine direction: ASTM D 828 | N/mm | Min. 3.5 |
Tensile strength, machine direction: ASTM D 882, Method A | MPa | Min. 12 |
Tensile strength , transverse direction: ASTM D 882, Method A | MPa | Min. 8 |
Elongation, machine direction: ASTM D 882, Method A | % | Min. 225 |
Elongation, transverse direction: ASTM D 882, Method A | % | Min. 350 |
Pliability | – | Must not crack when bent through 90º around a 5-mm mandrel @ –10 ± 2ºC |
Water vapour permeance - Type 1 (low permeance: ASTM E 96, water method) | ng/Pa·s·m 2 | Max. 15 (before and after aging) |
Water vapour permeance - Type 2 (standard permeance: ASTM E 96, desiccant method) | ng/Pa·s·m 2 | Max. 45 (before aging) Max. 60 (after aging) |