Water Blocking Tape
Semi-conductive Water Blocking Tape
Construction:-
- It is a non-woven double layer sandwiched type semi-conductive tape coated with high quality super absorbent polymer (SAP) in between.
End Use Applications:-
- Used in power cables to prevent / blocking the progression of water entering the power cables as it swells quickly in contact with the moisture ingress and expands to fill up the interstices.
- Used for axial (longitudinal) and radial water blocking of power cables.
- Suitable for use on insulation screen and under & over the metallic sheath of MV & EHV Power Cables.
- These tapes are also available with specific technical requirements.
Semi-conductive Water Blocking Tape
| Parameters | UT30-SCW12 | UT30-SCW16 |
|---|---|---|
| Thickness (mm) | 0.30 mm ±0.02 | 0.30 mm ±0.02 |
| Weight (g/m2) | 122 ±10 | 125 ±10 |
| Tensile strength (N/cm) | ≥53 | ≥50 |
| Elongation (%) | ≥14 | ≥12 |
| Swelling speed (mm/1st min) | ≥8 | ≥12 |
| Swelling height (mm/3rd min) | ≥12 | ≥16 |
| Surface resistivity (Ω) | ≤1800 | ≤1800 |
| Volume resistivity (Ω-cm) |  | |
| Short term stability (°C ) | 230 | 230 |
| Long term stability (°C ) | 90 | 90 |
Non-Conductive Water Blocking Tape
Construction:-
- It is a non-woven double layer sandwiched type non-conductive tape coated with high quality super absorbent polymer (SAP) in between.
End Use Applications:-
- Used in power & optic fiber cables to prevent/ block the progression of water entering the cables as it swells quickly in contact with the moisture ingress and expands to fill up the interstices.
- Used for axial (longitudinal) and radial water blocking of power & optic fiber cables.
- Suitable for use over the metallic wire screen / armour wires and under the jacket of MV & EHV Cables, Control Cables and Optic Fibre Cables etc.
Non-Conductive Water Blocking Tape
| Parameters | UT20-NCW12 | UT30-NCW16 |
|---|---|---|
| Thickness (mm) | 0.20 mm ± 0.02 | 0.30 mm ± 0.02 |
| Weight (g/m2) | 80 ± 10 | 110 ± 10 |
| Tensile strength (N/cm) | ≥ 30 | ≥50 |
| Elongation (%) | ≥ 8 | ≥ 8 |
| Swelling speed (mm/1st min) | ≥ 8 | ≥ 12 |
| Swelling height (mm/3rd min) | ≥ 12 | ≥ 16 |
| Short term stability (°C ) | 230 | 250 |
| Long term stability (°C ) | 90 | 90 |