cold-applied PE pipewrap tape
1. Product profile
The compound cold-applied PE pipewrap tape uses variety of PE and EVA as base film and butyl rubber as the coating. It is compounded one time under hot-melt status. In terms of use, the product may fall into three kinds, namely, anticorrosive adhesive tape (internal tape), protective adhesive tape (external tape )and repair tape .

2. Function characteristic
This product is characterized by uniform releasing force, excellent anticorrosive and insulation performance, long aging resistance time and ultraviolet rays-proof.
3. Apply range
It is widely applied to pipes of petroleum, natural gas, chemical industry, electricity, urban fuel and drainage.
4. Type specification

Item of specification
Test method
Value

Inner wrap
Outer wrap

Tensile strength at +23℃ (N/10 mm tape width)
ASTM D1000
≥ 50
≥ 50

Yield strength at +23℃ (N/10 mm tape width)
ASTM D1000
≥ 40
≥ 40

Elongation at break at + 23℃
ASTM D1000
≥300%
≥300%

Adhesion to primed steel at + 23℃ at 300mm/min rate of extension (N/10 mm tape width)
ASTM D1000
≥25
-

Adhesion to backing at + 23℃ at 300mm/min rate of extension (N/10 mm tape width)
ASTM D1000
≥ 4
≥ 4

Water vapour transmission rate (Gm/M/24 hrs)
ASTM D96
≤0.2
≤0.1

Water absorption at + 23℃ after 1 day
ASTM D570
≤0.1%
≤0.1%

Dielectric strength (KV/mm Thickness)
ASTM D1000 / ASTM D145
≥ 40
≥40

Application temperature
-
5℃ – 50℃
5℃ – 50℃



5. Primer function


NO.
Item
Requirement
Test method

1
Solid content(％)
≥15
GB/T1725-1979(89)

2
Surface dry time (min)
≤5
GB/T1728-1979(89)

3
Viscosity (paint-4 bar) (s)
10-20
GB/T1723-1993