tesa HAF® 8490

315 µm single sided amber reactive HAF mounting tape

Product Features

Very high bonding strength
High temperature resistance
Excellent chemical resistance

All product features

Product description

tesa HAF® 8490 is a reactive heat activated film based on phenolic resin and nitrile rubber. This amber single sided tape has a cotton fabric backing. It can easily be slit and die cut.
It is activated for pre-lamination by heat and starts to become tacky at 90 °C. In a second application step heat and pressure is applied over a certain period of time.

Product details and specifications

Product Features

Very high bonding strength
High temperature resistance
Excellent chemical resistance
Bonds remain flexible and elastic
At room temperature tesa HAF® 8490 is not tacky.

Application Fields

It is suitable for bonding of all thermal resistant materials such as metal, glass, plastic, wood and textiles.

High-strength splicing (single-side butt splice)

Adhesive Type	nitrile rubber / phenolic resin
Backing material	cotton fabric
Color	amber
Liner Type	none
Total thickness	315 µm

Adhesive Type	nitrile rubber / phenolic resin
Backing material	cotton fabric
Color	amber
Liner Type	none
Total thickness	315 µm

Tensile strength	90 N/cm
Shelf life time (packed) < 15°C	15 months
Shelf life time (packed) < 25°C	12 months
Shelf life time (packed) < 5°C	18 months

Tensile strength	90 N/cm
Shelf life time (packed) < 15°C	15 months
Shelf life time (packed) < 25°C	12 months
Shelf life time (packed) < 5°C	18 months

Processing:
1. Pre-lamination:
tesa HAF® 8490 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: > 2 bar
Time: 15–90 s.

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: temperature = 120 °C; pressure = 10 bar; time = 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® 8490_en 67 kB

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Product comparison

Name of product	tesa HAF® 8490	tesa® LTR 8711	tesa® UV epoxy 8684	tesa HAF® 8402	tesa HAF® 9410	tesa® L-tape 8698	tesa HAF® 58475	tesa HAF® 58473	tesa HAF® 8410	tesa HAF® 8478	tesa® L-tape 8692	tesa HAF® 58469
Total thickness	315 µm	30 µm	100 µm	125 µm	60 µm	200 µm	125 µm	80 µm	60 µm	200 µm	50 µm	10 µm
Adhesive Type	nitrile rubber / phenolic resin	low temperature activated reactive adhesive	UV-curable	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	UV-curable	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	nitrile rubber / phenolic resin	UV-curable	nitrile rubber / phenolic resin
Backing material	cotton fabric	none	PET	none	none	PET	none	none	none	none	PET film	none
Color	amber	translucent	white	amber	amber	yellow translucent	black	black	amber	amber	yellow translucent	black