• Product name: WLR cold-winding anticorrosion adhesive tape

Product introduction:
Cold wrap pipe tape is at room temperature, winding along the wrapped object construction, without the need for heat pipe retrieval, it is also called the tapes. Products made of polyethylene film, a layer of thermal compound to body with butyl rubber adhesive layer were extruded into a band of anti-corrosion materials, the tape for external coating of steel pipes material widely used in the field of pipeline corrosion, also commonly referred to as pipe cold tape, corrosion-resistant cold cold wrap hose, pipe tape, polyethylene tape.
   
Product applications:
Cold tape is widely used in petroleum, chemical industry, city gas, natural gas, electricity and drainage and sewage industries such as steel pipelines corrosion protection and drainage pipe straight pipe, elbow, storage tanks, fittings and other parts of the corrosion protection and restoration.

Project name nticorrosive adhesive tape Protective adhesive tapes Repair Test means
Color Black -- -- Visual inspection
Thickness
(mm)

Basement membrane

0.15~0.40. 0.25~0.60 0.10~0.30 GB/T 6672-1986
Adhesive layer 0.15~0.70 0.15~0.125 0.20~0.80
Tape 0.30~1.10 0.40~0.85 0.30~1.10
Basement membrane stretched(Mpa) ≧18 ≧18 ≧18 GB/T 1040-1992
Basement membrane Elongation at break(%) ≧150 ≧150 ≧200 GB/T 1040-1992
peel strength(N/cm) Bottom painted steel ≧18 -- ≧18 GB/T 2792-1981
On the material 5~10 5~10 5~10  
Volume resistivity(Ω.m) > 1X > 1X > 1X GB/T 1040-1989
Heat aging test(%) < 25 < 25 < 25 SY/T 0414-98
Appendix A
UV aging resistance
(168h)%
-- ≧80 ≧80 SY/T 0413-95
Appendix D
Water absorption(%) < 0.35 < 0.35 < 0.35 SY/T 0414-98
Appendix B
Water vapour permeability
(24h)(mg/c㎡)
< 0.45 < 0.45 < 0.45 GB/T 1037-7988

Note:
1) adhesive tape thickness tolerance for tape thickness ± 5%.
2) heat aging test is under the condition of sample at 100 ℃, 2400h after heat aging, measurement of basement membrane tensile strength, basal lamina fracture elongation, the rate of change of peeling strength.
3) UV resistant aging index refers to the testing of tensile strength and elongation retention。

 

Product introduction:
Cold wrap pipe tape is at room temperature, winding along the wrapped object construction, without the need for heat pipe retrieval, it is also called the tapes. Products made of polyethylene film, a layer of thermal compound to body with butyl rubber adhesive layer were extruded into a band of anti-corrosion materials, the tape for external coating of steel pipes material widely used in the field of pipeline corrosion, also commonly referred to as pipe cold tape, corrosion-resistant cold cold wrap hose, pipe tape, polyethylene tape.
   
Product applications:
Cold tape is widely used in petroleum, chemical industry, city gas, natural gas, electricity and drainage and sewage industries such as steel pipelines corrosion protection and drainage pipe straight pipe, elbow, storage tanks, fittings and other parts of the corrosion protection and restoration.

Hierarchical structure of adhesive coating

Coating grade Total thickness(mm) Coating structure
Ordinary level ≧0.70

A layer of paint with → layer → layer to go

Project Indicator Test method
Solids content(%) ≧15 GB/T  1725-1979 (89)
Table dry time(min) ≦5 GB/T  1725-1979 (89)
Viscosity (TU-4 cups)(S) 10~20 GB/T  17223-1993
Strengthening class ≧1.40 A layer of paint with → Layer (lap belt width 50%~55%) → layer to go (lap-belt width of 50%~55%)

Notes:
1) for normal coating, when adhesive tape width is less than or equal to 75mm, da Lian width greater than or equal to 10MM; When adhesive is wider than 75mm, is less than 230mm, and width is greater than or equal to 15mm when adhesive width greater than 230mm, lap width is greater than or equal to 20mm.
2) adhesive width tolerances to ± 5% adhesive width.
3) weld design thickness of coating thickness should be not less than 85%.
4) for special circumstances, special section of the coating structure of design.
Joint width of adhesive tape should be used table

Pipe diameter(mm) Weld adhesive tape width(mm )
20~40 20
50~100 100
150~200 150
250~950 200
1000~1500 230

Note: fill mouth coating performance should not be less than the tube body.

Product features:
1. Unwinding force uniform, strong adhesion with the metal surface sealing, can effectively prevent the penetration of water vapour and other corrosive gases, UV permeability characteristics, resistance to extrusion, primer and has a good mix of tape layer.
2. Plastic layer thickness uniformity, wide adaptability.
3. Tape has excellent adhesion, elasticity, can adapt to the expansion and contraction of the pipe coating.
4. High tensile strength, elongation at break due to facilitate mechanized and manual winding.
5. Layer equal, bond is strong, elastic medium, connect, good sealing performance.
6. Substrate and adhesive bonding, and no degumming phenomenon of in-store or in the course of construction.
7. Can adapt the pipeline thermal expansion and contraction, thermal properties, strong UV resistance, long service life and wide application range.
8. With good water resistance, chemical stability.
9. Can be applied in conjunction with cathodic protection.
10. High tensile strength, elongation at break, easy to moderate mechanical and manual winding, convenient construction and savings in manpower and material resources, pollution-free.
11. Variety, complete specifications, colors, including tape (in-band), protection (go), joints, anticorrosive primer, and construction equipment.
12. High quality, low price, very economic.

 

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