Polyken Pipeline Visco-Elastic Wrapping Tape

Visco-elastic wrapping tape description visco-elastic wrapping tape also called  pipeline visco-elastic wrapping tape,polyken pipeline visco-elastic wrapping tape visco-elastic wrapping tape is a 2-layer system that consists of a corrosion protective inner wrap (viscowrp) and mechanical protective outer wrap that can be a pe, pvc or pu composite outer wrap.   visco-elastic wrapping tape  properties item test method performance color visual estimation green or blue thickness iso 9001 1.8-2.0mm density din 53479 1.6-1.7gcm3 application temperature -- -40 to +70℃ water absorption astm d 570 ﹤0.1% tensile strength din 30672  45ncm peel strength to steel (23℃)  iso 21809-3 tested on steel (sa2 12,st2 and st3)and plant coatings pp,pe,fbe .results on all sustrates: @-45℃ -pp,pe,fbe min 3nmm. -steel  min 20nmm @+23℃  min0.5nmm @+70℃  min 0.05nmm cathodic disbondment resistance  en 12068 ﹤6mm dielectric strength din53481  12kvmm drip resistance iso21809-3 tested 72 h @130 ℃,no dripping of compound   lap shear strength iso21809-3 tested @+23°c and +50°c  on steel(sa 2½, st 2 and st 3). Results on all substrates: @-45℃ min 3 nmm2 @23℃ min 0.3 nmm2 @70℃ min 0.03 nmm2 - cohesive failure - ≥ 99% coverage of surface - ≥ 0.6 mm residual thickness water vapor transmission rate astm e 96 0.025% visco-elastic wrapping tape structure.