Self-extinguishing Halogen Free “HFF-105” polyolefin Heat Shrink Sleeve 2 ÷ 1
- Material: Polyolefin
- Shrinkage: 2:1
- Scope: Railway
- Min\max operating temperature: -55°C to +105°C
- Flammability: according to FMVSS 302
- Fire behavior and determination of fumes and gases: BS6853(1999) Vehicles category 1 HL3 ACCORDING TO REQUIREMENT R22 – R23 of the railway standard EN 45545-2:2013+A1:2015 LVL1-085 requirement A3 Boeing BS7239
- Oxygen value: 35%
- Colors: White – Yellow – Black (diameter 1.2 mm available only Black)
- Diameters available on request: 2.4mm – 3.2mm – 4.8mm – 6.4mm (flat version)
- Tensile strength: 10 N/mm2 according to ASTM D 638
- Elongation at break: 200%
- Longitudinal variation: -10% /+5%
- Water absorption: ≤0.15%
- Specific weight: 1.40 g/cm3
- Minimum shrinkage temperature: > 90°C
- Thermal shock: no damage (4 hours at 175°C)
- Elongation after heat aging test: ≥100% (168h at 150°C)
- Low flexibility temperature: no cracks (-55°C)
- Fluid resistance: good
- Copper corrosion: None
- Volume resistivity: 1014 ohm.cm
- Dielectric strength: 20 KV/mm
- Marking: excellent, heat transfer.
Heat shrink indication
- To shrink the heat shrinking sleeve, use equipment made for this specific operation such as, for example, guns or hot air tunnels.
- Shrink the sleeve starting at one end, the most critical part, and then proceed slowly to the opposite end. This method avoids the formation of air bubbles between the inner wall of the heat shrink sleeve and the object it covers.
- In the event that the object to be covered is made of metal or a good heat conductor, it is advisable to preheat the object to avoid “cold areas”, so as to allow a perfect and soft adaptation of the heat-shrinking sleeve.
- In order to avoid overheating of the heat shrink sleeve, ensure there is regular heat distribution. Excessive overheating of the material during the shrinking process can cause bubbles, discoloration and in some cases even breakage of the heat-shrinking sleeve.
