Non-conductive Film Laminated WBT Water Blocking Tape For Cables

Short Description:

The water- blocking tape is a compound of polyester fiber non-woven and highly water- absorbing material with a water-swelling function. Water blocking tapes and water swellable tapes rapidly absorb liquid at the point of insulation failure and quickly swell to block any further ingress. This ensures any cable damage is minimised, fully contained and is easy to locate and repair. The water-blocking tape is used in power cables and communication optical cables to reduce water and humidity penetration in optical and electric cables so as to increase the service life of optical and electric cables.


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Product Benefits of Water Blocking Tape, Water Swellable Tape

Water blocking tapes and water swellable tapes offer premium performance benefits during the critical first minute of response to water. The use and blending of superior super absorbent polymers (SAP) contributes significantly to enhanced performance. Some of the features and benefits of using water-blocking tapes are: 

● Seawater blocking capability

● Fast swell

● Suitable for direct fibre contact

● High yield

● Suitable for fast processing

● Low electrical resistance

● Good cushioning properties

● Asymmetric swell if required

● Proven long term performance

Product Display

PIC (3)
PIC (4)
PIC (1)

Technical Specifications of Water-blocking Tape

Physical performance

Unit

Model

ZSD-25

ZSD-30

ZSD-35

ZSD-45

ZSD-50

ZSD-B-50

 Thickness

mm

0.25±0.05

0.30±0.05

0.35±0.05

0.45±0.05

0.50±0.05

0.50±0.05

Constant

g

90±10

100±10

120±10

150±10

170±10

170±10

Tensile Strength

N/15mm

>50

>60

>70

>70

>70

>70

Elongation

%

15

15

15

15

15

15

 Moisture Content

%

9

9

9

9

9

9

 Expansion Height

mm

10

13

15

15

15

15

 Expansion Velocity

mm/1min

≥6

≥10

≥12

≥12

≥12

≥12

 Volume Resistance

Ω.cm

 

 

 

 

 

<1000000

 Surface Resistance

Ω

 

 

 

 

 

≤1500

thermostability

         A.Long-Term Temperature Resistance (90°C,4h) Expansion Height          B. Instant Temperature Resistance (230°C) Expansion Height

mm

≥12

≥12

≥12

≥12

≥12

≥12

mm

≥12

≥12

≥12

≥12

≥12

≥12


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