Heat shrink polyolefin sleeve “TTPA31 Series” shrink 3 ÷ 1 with internal adhesive
- Material: Polyolefin
- Shrinkage: 3:1 with internal adhesive
- Scope: where a high degree of protection is required
- Minimum shrinkage temperature: > +110 °C
- Min/max operating temperature (external wall only): -55°C to +110°C
- Low Flexibility Temperature: No Split (-55°C)
- Self-extinguishing (external wall only): according to ASTMD2671B
- Colors: Black – other colors on request
- Tensile strength: 11 N/mm2 according to ASTMD638
- Elongation at break: 300% according to ASTMD638
- Elongation after heat aging test: 250% (168 hours at 175°C)
- Thermal shock: no damage (4 hours at 250°C)
- Dielectric strength: ≥ 15 KV/mm
- Longitudinal variation: ≤+1% ≤-15% maximum
- Water absorption: ≤ 0.5% according to ASTMD570
- Specific gravity: 1.45 G/cm3
- Mold Resistance: Good
- Fluid resistance: good
- Copper corrosion: None
- Volume resistivity: 1014 ohm.cm
Heat shrink indication
- When shrinking the heat-shrink 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.
