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polyethylene tape outer tape

PBT-3700 series polyethylene tape outer tape (protective tape, protective tape) is made of polyethylene as the base material and butyl rubber as the adhesive layer through co-extrusion and compounding. Because its base film is thick and wrapped around the outer surface of the anti-corrosion tape (inner tape), it mainly plays the role of protecting the internal anti-corrosion layer. It has strong backing material peeling strength and adhesion to prevent it from being damaged during transportation down the ditch. It is suitable for insulation and corrosion protection of various buried pipelines. It has high tensile strength and appropriate elongation at break, which is convenient for mechanized and manual winding.

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application

It is widely used in external corrosion protection of metal pipes in various pipeline projects and facilities such as petroleum, natural gas, chemical industry, electric power, metallurgy, urban gas pipeline network, water supply, etc.

 

Property

Test items Typical value Unit Test method
color Black, gray, white, yellow Visual inspection
Release material PVC
texture of timber Butyl rubber, polyethylene(PE)
thickness Customizable mm ASTM D-3652
Tensile strength ≥25 Mpa ASTM D-3759
elongation ≥1000 % ASTM D-3759
Peel strength Primer steel ≥50 N/cm GB/T 2792
Adhesive tape backing ≥5   GB/T 2792
  Layer ≥5   SY/T0414 7.5
Electrical strength ≥30 MV/m GB/T 1408.1
Volume resistivity ≥1×1012 Ω·m GB/T 1410
Heat aging resistance ≥75 SY/T0414A
Water absorption ≤0.2 SY/T0414B
Water vapor permeability ≤0.45 mg/24h.cm* GB/T1037
UV aging resistance(600h) ≥80 % SY/T0413
Shock resistance (23℃) 9 J SY/T0414C
Operating temperature -10~70
Cathodic stripping (23°C, 28d) ≥5 mm SY/T0415

description

Product Features

Excellent for inner tape and self-adhesion, UV resistance, can be applied in a wide temperature range, good plasticity, consistent and uniform thickness, easy to apply, no special equipment required, compatible with common pipeline coatings, excellent resistance to cathodic debonding.

Specification data

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