|
Powershield 20 & 21 |
|
Self
Bonding Anti Corrosive Tape & Self Bonding Insulating Tape |
Bells has successfully developed within their 'R & D' facility
"Self Bonding
Tapes of Anticorrosive as well as insulating values. These tapes are
exclusively
designed for use in jointing of telecommunication Cables laid
underground.
These inherent properties of the basic polymer enables
the said tapes to protect
the joint from chemicals or electrolytic corrosion apart from perfect
insulation.
Method of Application
Powershield-21 anticorrosive Tape is stretched to 2/3
(two third) of its
original width and then it is wrapped by the half over lapping
process. Two such
layers are good enough for proper binding & amalgamation. Over
the said
lapped tape in similar way, warp Powershield-20 Self
bonding insulating Tape
with enough tension which reduces the original width of the
tape to 2/3
(two third) and apply Two layers for proper insulating and
Self bonding.
| Technical Data |
| |
Powershield-21
Selfbonding Anticorrosive Tape |
Powershield-20
Selfbonding InsulatingTape |
| Width mm. |
40 |
19 |
| Thickness mm. |
1 |
0.5 |
| T. Strength kg/mm |
0.25 |
0.15 |
| Elongation (%) |
300 |
400 |
| BDV kv/mm |
8 |
16 |
| Fusion |
No Separation between
layers |
No Separation between
layers |
| Cracking |
No Crack |
No Crack |
| Tackyness |
Excellent |
Excellent |
| Ozone Resistance |
Unaffected |
Unaffected |
| Electrolytic Corrosion |
Unaffected |
Unaffected |
