No.55 e
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Anticorrosion polyethylene tape No. 55 is developed for preventing corrosion and protecting various types of pipelines. It consists of a polyethylene film base and a self-fusing butyl rubber adhesive layer. The tape provides superior durability and corrosion resistance for protecting pipelines, power cables, and communication cables. It is highly flexible, conforms well to complex shapes, and forms an effective anticorrosion layer when wrapped. Testing shows the tape maintains high tensile strength and elongation even after long term chemical immersion. It also exhibits excellent insulation resistance and watertightness over time. The tape should be stored in a cool, dark place and not used in areas with temperatures over 70¡ãC.
No.55 e
- 1. Doc No.BSH210E 2 2010/06/02 1/3 No.55 Outline Anticorrosion polyethylene tape NO.55 Developed for prevention of corrosion and protection of various types of pipelines. It consists of a polyethylene film and high chemical resistance and a self-fusing type adhesive layer. Using polyethylene with excellent electrical property and chemical resistance as base material together with thick-coated synthetic butyl rubber-base adhesive, it brings out superior durability and anticorrosion property. Being highly flexible, it is easy to wind and suitable for work in temperature and for work on joint or flexural area. Structure Fig-1 Structure;¡í55 Application ¡ñFor anticorrosion/protection of various types of pipelines. (Not only straight sections, but also flanges, elbows, T-joints etc.) ¡ñFor anticorrosion/protection of power cable and communication cab. Features ¡ñAs adhesive layer is butyl rubber type material, it flows after being wrapped and forms anticorrosion layer as one. ¡ñIt fits snugly against any shape, no matter how complex. ¡ñOffer superior durability and corrosion resistance. ¡ñElectrical insulation and chemical resistance is excellent. ¡ñHas superior watertight properties because it is a self-fusing tape with a self-adhesive layer. 1£¯3 Butyl rubber adhesive Polyethylene base
- 2. Doc No.BSH210E 2 2010/06/02 2/3 Standard size and color Table-1 Standard sizes and color Part NO. Thickness (mm) Width (mm) Length (mm) Color NO.55 0.4 25.50 10 Black Characteristic ¡ñ General properties Table-2 General properties Item Test result Test method Thickness (mm) 0.4 £ Adhesive Strength (N/25mm width) 23¡æ 55.0 Elongation (%) 23¡æ 500 According to JIS Z 1901 Standard distance 50mm Tensile speed 500mm/min Overlap adhesion (N/25mm width) 23¡æ 50.0 Overlap length 100mm Pressure bonding time 2 hrs Tensile speed 500mm/min Volume resistance (¦¸.cm) 5x1013 According to JIS C 2107 Applied voltage 500vXmin. Electrode 20cm2 Insulation break voltage (kV/mm) Over10 According to JIS C 2107 Electrode 12.5mm¦Õ mass500£ç Voltage boost 2kV/sec ***Values listed above are typical and not guaranteed. ¡ñChemical resistance After 1000hrs.immersion in each chemical, the test was conducted. Table-3 Chemical resistance Contents Chemicals Tensile Strength (N/25mm width) Elongation (%) Before immersion 5.0 520 5£¥ NaOH 4.6 490 5£¥ H2SO4 4.6 470 *** According to JIS Z0237£¨2009£©
- 3. Doc No.BSH210E 2 2010/06/02 3/3 ¡ñWater tightness A tape-wrapped (50mm¦Õ) steel pipe is immersed in 3% saline solution and the change of insulation resistance with time was measured. (one round by half-wrap) 1.0E+10 1.0E+11 1.0E+12 1.0E+13 0 1 2 3 4 5 6 7 8 9 10 Period (month) InsulationResistance£¨¦¸£© Fig-2; Change of Watertightness with Days Cautions Concerning Use ¡ñThe tape should be stored in a dark and cool place. ¡ñThe tape is not suitable for application to the area exposed to the ambient temperature of 70¡æ or above. ¡ñPetrolatum is dissolved by organic solvents. Please do not contact with organic solvents.