Item

Index

Tensile strength (longitudinal, transverse), Mpa          ≥

18

Elongation at break (longitudinal, transverse), %               ≥

300

Tear strength at right corner (longitudinal, transverse), KN/m        ≥

45

Dimensional longitudinal shrink in boiling water, %               ≤

4

Heating loss, %     ≤

5

Acid and alkali resistance

Free of distortion, softening or cracks

Tensile strength, elongation at break and tear strength loss ≤10%

Heating tolerance (80±2) , 20h

Free of warp, cracks and stickiness

Cold tolerance (-25±3) , 180°, folded

Free of fold and rip

Oil resistance, 5h, 60, 10# machine oil

Do not crack.

Air permeability, cm3/m2dPa                  ≤