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tesa® HAF 8454 E&E
Heat activated adhesive film
Solutions for the Consumer Electronics Industry
Product descriptiontesa® HAF 8451 is a thermosetting film based on phenolic resin and nitrile rubber, especially designed for applications that require high resistance against shock, e.g. in case of dropping. This double-sided tape has no backing. It is protected by a strong paper liner.
At room temperature tesa® HAF 8451 is not tacky. It is activated by heat and pressure during defined intervals.
tesa® HAF 8451 enables extremely strong and age-resistant bonds between different materials, even on porous surfaces.
tesa® HAF 8451 features:
- Excellent shock resistance, particularly under cold conditions
- Excellent conformability for porous or curved substrate surfaces, including 3D surfaces
- Reliable and age-resistant bonds between plastic and metal surfaces, even on very small bonding areas
- Suitable for long-term applications that are exposed to heavy stress, especially at low temperatures
- Bonds remain elastic even at very low temperatures
Main applicationsIt is especially recommended for bonding of metal components to various plastic or metal surfaces, e.g. Aluminium and PC and ABS.
- Bonding of nameplates for mobile phones
- Bonding of frame to PDA-housings
Shelf life time < 25°C
Type of adhesive
nitrile rubber / phenolic resin
Shelf life time < 15°C
Type of liner
Shelf life time < 5°C
Additional InfoTechnical Recommendations:
tesa® HAF 8451 is not self adhesive. It is activated by pressure and heat over a certain interval. The following values are recommendations for machine parameters to start with.
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.
- Temperature¹ 70 – 120 °C
- Pressure² 2 – 6 bar
- Time 1,5 – 3,0 s
Remove the liner from tape after pre-lamination step. Combine the plastic onto the metal component. Apply sufficient temperature through metal to the plastic component while applying pressure for the bonding time to reach a sufficient bonding strength.
- Temperature¹ 160 – 200 °C
- Pressure² 2 – 10 bar
- Time 3,0 – 10,0 s
¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured at the surface of heating mould.
² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transformed from mould surface directly to the bonding area.
Storage conditions according to tesa® HAF shelf life concept.
tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.