Water-blocking
yarn.
Polyester yarn with super-absorbent resin for internal gaps and longitudinal water paths.
SUPER-ABSORBENT RESIN COATED YARNMaterial construction.
Polyester long-fibre yarn coated with polyacrylate super-absorbent resin.
When water enters a damaged cable, the super-absorbent coating swells to form a gel that helps close internal gaps and restrict longitudinal migration. Yarn targets the spaces between strands or cable components and can complement a surrounding water-blocking tape.
Places swelling material along narrow water paths.
Minimum tensile strength ranges from 20 to 400 N.
Select yield and denier to balance build and duty.
Technical specification.
| Property | Unit | CZS-0.5 | CZS-1.0 | CZS-2.0 | CZS-3.0 | CZS-4.0 | CZS-5.0 | CZS-6.0 | CZS-10 |
|---|---|---|---|---|---|---|---|---|---|
| Length per unit mass / yield | m/kg | 500 ±50 | 1,000 ±100 | 2,000 ±200 | 3,000 ±300 | 4,000 ±400 | 5,000 ±500 | 6,000 ±600 | 10,000 ±1,000 |
| Nominal denier | D | 18000 | 9000 | 4500 | 3000 | 2250 | 1800 | 1500 | 900 |
| Minimum tensile strength | N | ≥400 | ≥200 | ≥150 | ≥110 | ≥80 | ≥60 | ≥50 | ≥20 |
| Minimum elongation | % | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 |
| Minimum absorption after 1 min | ml/g | ≥50 | ≥50 | ≥45 | ≥45 | ≥40 | ≥35 | ≥30 | ≥20 |
| Minimum absorption after 5 min | ml/g | ≥60 | ≥60 | ≥55 | ≥55 | ≥50 | ≥45 | ≥40 | ≥30 |
| Short-term thermal stability | °C | 230 | 230 | 230 | 230 | 230 | 230 | 230 | 230 |
| Long-term thermal stability | °C | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
| Maximum moisture content | % | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 |
Thermal values describe material stability, not a finished-cable temperature rating.
Choosing the right construction.
Choose yarn for interstices, longitudinal filler paths or binding duties. Choose tape for broader surface coverage and bedding. Higher m/kg means a finer, lower-mass yarn; balance tensile strength, absorption and the number of ends in the construction.
Related water-blocking materials.
- CZSD / white double-sided non-conductive
- CBZSD / black double-sided semi-conductive
- CDZD / white single-sided non-conductive
- CBDZD / black single-sided semi-conductive
Tape wraps broader cable surfaces; yarn targets internal gaps. A combined system can address both.
Yarn package options.
Core IDs: 52, 76, 92, 94, 125 and 127 mm. Specify grade, core, package size, payout direction and required quantity. Alternative winding arrangements can be discussed to suit your production line.
- Tube A
- 220 mm tube / 200 mm traverse
200–280 mm OD / 3–5 kg net - Tube B
- 175 mm tube / 150 mm traverse
200–280 mm OD / 2.5–3.5 kg net
Application and processing.
Select yarn placement, number of ends and payout tension to suit the gaps and mechanical duty. Validate the complete cable for pressure, water chemistry and temperature. Salt-water duties need specific qualification.
Store sealed, clean and dry. Product imagery is representative.