Polyethylene tape
This Polyethylene tape coating system is made up of Primer ( P 19 or P27) and inner tape (20 mils ,25 mils,30 mils ) and outer tape ( 20 mils, 25 mils , 30 mils ). The inner tape is Black, The outer tape is White, overlap 50% .
Application:
Prepare surfaces by removing all loose scale, rust or other foreign matter by grit blasting or wire brush. Surface must be clean, dry and free of grease.Apply thin film of Butyl Primer to all surfaces to be wrapped and allow to dry. Peel back interleaving and apply adhesive side of the tape to the surface and press down. Apply the tape spirally with enough tension to make it conform. Remove interleaving as wrapping proceeds. Overlap each turn by at least 1" or 55% to achieve double thickness.
Irregular surfaces such as valves, flanges, etc.
XUNDA T 250 Polyethylene outer tape
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Physical Properties
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Test Method
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Typical Value
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English
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Metric
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Total thickness
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ASTM D 1000
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20.0 mil
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0.50mm
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Backing thickness
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ASTM D 1000
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13.0 mil
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0.32 mm
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Adhesive thickness
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ASTM D 1000
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7.0 mil
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0.18 mm
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Width
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-
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2’’- 32 ‘’
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50 -800 mm
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Length
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-
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100’ -800 ‘
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30 -240 m
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Backing colour
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-
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White
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Tensile strength
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ASTM D 1000
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29.0 lbs/in
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50 N/ cm
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Elongation
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ASTM D 1000
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400 %
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Peel Adhesion to inner-layer tape
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ASTM D 1000
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45 oz/in
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5 N/cm
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Cathodic Disbandment
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ASTM G8
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0.25 in radius 6.4 mm
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Dielectric Strength
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ASTM D 149
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38 Kv
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Volume Resistivity
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ASTM D 257
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2.0x1012 ohm.cm
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Water Absorptivity
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ASTM D 570
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0.1 %
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Water Vapor Transmission Rate （24h）
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ASTM F1249
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0.01g/100sq in/24h
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0.1g/100sq mm/24h
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UV resistance
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-
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Excellent
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Application Temperature
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-
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14℉-140℉
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-10 ℃ - 60 ℃
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Max Service Temperature
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-
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-40℉-176℉
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- 40 ℃ - 80℃
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