Additional Info
Technical recommendations:
tesa® LTC is not self-adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for bond line parameters to start with.
1) Pre-lamination
During pre-lamination, laminate the film onto the first component. Setting:
Short-time exposure to 60 °C bond line temperature during pre-lamination does not impact final bonding potential.
2) Bonding
Remove the liner from the film after the pre-lamination step. Position the second component. Apply temperature and pressure for the bonding time to reach sufficient bonding strength. Setting:
Short cycle times can be achieved at 110 °C bond line temperature. For activation at lower temperatures, increase the heat-press time or combine a short heat-press step with oven curing.
Bonding strength values were obtained under standard laboratory conditions (Material: PC/PC; bonding conditions: temperature = 90 °C; pressure = 10 bar; time = 300 sec).
To reach maximum bonding strength, surfaces should be clean and dry. Allow at least 1-2 hours dwell-time after bonding before performance testing. Final bonding strength will be reached after 24 hours.
Storage
¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured in the bond line. ² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transferred from jig surface directly to the bonding area.
tesa® LTC is not self-adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for bond line parameters to start with.
1) Pre-lamination
During pre-lamination, laminate the film onto the first component. Setting:
- Temperature¹: 50-60 °C
- Pressure²: 1-5 bar
- Time: 5–20 s
Short-time exposure to 60 °C bond line temperature during pre-lamination does not impact final bonding potential.
2) Bonding
Remove the liner from the film after the pre-lamination step. Position the second component. Apply temperature and pressure for the bonding time to reach sufficient bonding strength. Setting:
- Temperature¹: 75–110 °C
- Pressure²: 5–10 bar
- Time: 10–480 s
Short cycle times can be achieved at 110 °C bond line temperature. For activation at lower temperatures, increase the heat-press time or combine a short heat-press step with oven curing.
Bonding strength values were obtained under standard laboratory conditions (Material: PC/PC; bonding conditions: temperature = 90 °C; pressure = 10 bar; time = 300 sec).
To reach maximum bonding strength, surfaces should be clean and dry. Allow at least 1-2 hours dwell-time after bonding before performance testing. Final bonding strength will be reached after 24 hours.
Storage
- tesa recommends storage in original packaging in cool and dry conditions.
- tesa® LTC should not be exposed to more than 35 °C at any time before bonding (during transport, storage and converting). Long term storage should remain below 25 °C.
- The shelf life is 12 months after production. For the actual shelf life please refer to the best before date on the label in the log roll core.
- More details are available in our transportation guideline.
¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured in the bond line. ² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transferred from jig surface directly to the bonding area.
