Heat shrink polyolefin sleeve with internal adhesive “TA3155 Series” Automotive shrinkage 3 ÷ 1
- Material: Polyolefin
- Shrinkage: 3:1
- Scope: Automotive
- Minimum shrinkage temperature: > +100 °C
- Min/max operating temperature: -55°C to +125°C
- Self-extinguishing (except transparent): according to Regulation UL 224 VW-1
- Colors: Black – other colors on request
- Elongation at break: 3oo% according to ASTMD2671
- Elongation after heat aging test: 150% (168 hours at 158°C)
- Fluid resistance: breaking strength 7 MPa, elongation 300% (24 hours at 23°C in diesel and lubricating oil)
- Dielectric strength: 20 kV/mm according to ASTMD150
- Longitudinal variation: from 0% to -10% according to UL224 regulations
- Volume resistivity: 1014 ohm.cm according to ASTMD257
- Thermal shock: no damage (4 hours at 250°C)
- Cold bend test: no crack
- Water absorption: ≤ 0.5%
- Aluminum adhesion: 60 N/25 mm
Heat shrink indication
- For shrinking the heat-shrinking sheath, use equipment made for this specific operation such as, for example, guns or hot air tunnels.
- Shrink the sheath starting at one end, the most critical, 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 zones”, so as to allow a perfect and soft adaptation of the heat-shrinking sheath.
- In order to avoid overheating of the heat shrink sleeve, ensure a regular heat distribution. Excessive overheating of the material during the shrinking process can cause bubbling, discoloration and in some cases even breakage of the heat shrink sheath.
