Technical recommendations:
tesa HAF® 58491 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, the adhesive tape is laminated onto the metal substrate. This step does not affect the shelf life time of the adhesive tape. Pre-laminated components can be stored over the same period of time as the adhesive tape.
setting:
- Temperature¹ 95 – 120 °C
- Pressure² 2 – 6 bar
- Time 3 – 10 s
2. Bonding:
Remove the liner from tape after pre-lamination step. Place the plastic part onto the metal component. Apply sufficient temperature while applying pressure for the bonding time to reach sufficient bonding strength.
setting:
- Temperature¹ 120 – 250 °C
- Pressure² 5 – 30 bar
- Time 5 – 180 s
To achieve optimum performance a cooling step (while applying pressure) directly after the bonding step is recommended.
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 transformed from jig surface directly to the bonding area.
Bonding strength values were obtained under standard laboratory conditions. (Material: etched aluminum test specimen / bonding conditions: temperature = 180 °C; pressure = 10 bar; time = 7 sec).
To reach maximum bonding strength surfaces should be clean and dry. Storage conditions according to
tesa HAF® shelf life concept.