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Product description
tesa HAF® 8405 is a reactive heat activated film based on phenolic resin and nitrile rubber. This amber double sided tape has no backing. It is protected by a strong paper liner and can easily be slit and die cut.At room temperature tesa HAF® 8405 is not tacky. It is activated by heat and pressure applied over a certain period of time.
After curing tesa HAF® 8405 reaches:
- Very high bonding strength
- High temperature resistance
- Excellent chemical resistance
- Bonds remain flexible and elastic
Main applications
It is suitable for bonding of all thermal resistant materials such as metal, glass, plastic, wood and textiles.- High-strength splicing (overlap splice)
- Structural bonding
- Magnet bonding in electric motors
- Friction liners for clutches
Technical properties
Shelf life time < 25°C
_NULL months
Bonding strength
_NULL N/mm²
Type of adhesive
nitrile rubber / phenolic resin
Shelf life time < 15°C
_NULL months
Type of liner
glassine
Bonding strength (dynamic shear)
12 N/mm²
Shelf life time < 5°C
_NULL months
Total thickness
30 µm
Backing material
none
Color
amber
Additional Info
Technical recommendationstesa HAF® 8405 is not self adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for machine parameters to start with. Please note that optimum parameters strongly depend on the type of machine, particular materials as well as customer requirements.
1.Pre-lamination: tesa HAF® 8405 is laminated before curing. For this process we recommend a temperature between 120°C and 140°C.
2.Bonding: The bonding conditions temperature, pressure and time depend on the application. Following parameters can be regarded as a guideline:
Splicing application:
- Temperature: 120-220 °C
- Pressure: >2bar
- Time: 15 – 90 s.
- Temperature: 180 – 230 °C
- Pressure: > 8 bar
- Time: 3 min – 30 min
- Temperature: 140 – 180 °C
- Pressure > 6-10 bar
- Time: 2 min - 5 min
- Temperature: 180 – 220 °C
- Pressure: > 10-15 bar
- Time: > 3 - 30 min
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.
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