tesa HAF® 8400

270µm amber reactive HAF mounting tape

Product description

tesa HAF® 8400 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® 8400 is not tacky. It is activated for pre-lamination by heat and starts to become tacky at 90 °C/194° F. In a second application step heat and pressure is applied over a certain period of time.
After curing tesa HAF® 8400 reaches:

Very high bonding strength
High temperature resistance
Excellent chemical resistance
Bonds remain flexible and elastic

Product details and specifications

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)
Friction liners for clutches
Recommended for bonding of very rough materials due to its high thickness

Adhesive Type	nitrile rubber / phenolic resin
Backing material	none
Color	amber
Liner Type	glassine
Total thickness	10.63 mils 270 µm

Adhesive Type	nitrile rubber / phenolic resin
Backing material	none
Color	amber
Liner Type	glassine
Total thickness	10.63 mils 270 µm

Bonding strength (push-out)	1740.45 lbs/in² 12 N/mm²
Bonding strength (dynamic shear)	1740.45 lbs/in² 12 N/mm²

Bonding strength (push-out)	1740.45 lbs/in² 12 N/mm²
Bonding strength (dynamic shear)	1740.45 lbs/in² 12 N/mm²

Processing:
1.Pre-lamination:
tesa HAF® 8400 is laminated before curing. For this process we recommend a temperature between 120 °C/248° F and 140 °C/284 °F.
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 (248-428 °F)
Pressure: > 2 bar
Time: 15 – 90 s.

Friction liners for clutches:

Temperature: 180 – 230 °C (356-446 °F)
Pressure: > 6 - 10 bar
Time: 3 min – 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/248° F; p = 10 bar; t = 8 min)
To reach maximum bonding strength surfaces should be clean and dry. 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.

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Product information_tesa HAF® 08400_en-US 56.2 kB

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Product comparison

Name of product	tesa HAF® 8400	tesa HAF® 8414 ACF	tesa HAF® 8412 ACF	tesa HAF® 8490	tesa HAF® 8401	tesa HAF® 9402	tesa HAF® 8471	tesa HAF® 58474	tesa HAF® 8474	tesa HAF® 8472	tesa HAF® 8405
Total thickness	270 µm		50 µm	315 µm	200 µm	125 µm	30 µm	100 µm	100 µm	60 µm	30 µm
Adhesive Type	nitrile rubber / phenolic resin	copolyamide	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin
Backing material	none	none	none	cotton fabric	none	none	none	none	none	none	none
Color	amber	translucent	amber	amber	amber	amber	amber	black	amber	amber	amber
Activation temperature			120 °C
Bonding strength			4 N/mm²