tesa® HAF 8401

200 µm amber reactive structural bonding film.

Product Description:

tesa HAF® 8401 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.
It is activated by heat and pressure applied over a certain period of time.

Product features:

Very high bonding strength
High temperature resistance
Excellent chemical resistance
Resistance against oil and solvents
Bonds remain flexible and elastic

Application Fields:

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 data:

Backing material none
Color amber
Total thickness 200 µm
Type of adhesive type: nitrile rubber / phenolic resin
Type of liner type: glassine

Property evaluation:

Bonding strength (dynamic shear) 12 N/mm²

Downloads:

Additional information:

Processing
tesa HAF® 8401 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® 8401 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.

Friction liners for clutches:

Temperature: 180 – 230 °C
Pressure: > 8 bar
Time: 3 min – 30 min

Magnet bonding:

Temperature: 140 – 180 °C
Pressure > 6-10 bar
Time: 2 min – 5 min

Structural bonding:

Temperature: 180 – 220 °C
Pressure: > 10-15 bar
Time: > 3 – 30 min

Bonding strength values were obtained under standard laboratory conditions. Value is guaranteed clearance limit checked with each production batch (Material: Etched aluminium test specimen / Bonding conditions: Temp. = 120 °C; p = 10 bar; t = 8min). To reach maximum bonding strength surfaces should be clean and dry.