tesa_0871x_dr_001<br>
Product information

tesa® LTR 8714



Product description

tesa® Low Temperature Reactive (LTR) 8714 is a reactive mounting tape activated at moderate temperatures. This translucent-white double-sided tape has no backing. It is protected by a PE-coated paper liner.

tesa® LTR 8714 is free of halogen and compliant with current RoHS directive.

At room temperature tesa® LTR 8714 is not tacky. It is activated by moderate heat and pressure applied during the assembly process.

Special Features:
  • Extremely strong bonding
  • Excellent reliability after curing, even in hot climate
  • Sebum resistant
  • Very low oozing ratio
  • Activated at low temperature and pressure

Main applications

tesa® LTR 8714 is especially recommended for reliable bonding of temperature sensitive materials in consumer electronics devices and accessories:

  • Bonding of fabrics and leather
  • Bonding of plastics
  • Bonding of sensitive electronic parts

Additional Info

Technical recommendations:
tesa® LTR 8714 is not self adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for bond line parameters to start with.

1. Pre-lamination:
During pre-lamination, laminate the adhesive tape onto the first component.

Setting:
  • Temperature¹ 50 – 60 °C
  • Pressure² 1 – 3 bar
  • Time 5 – 20 s

Short-time exposure to 60°C bond line temperature during pre-lamination does not impact final bonding potential.

2. Bonding:
Remove the liner from tape after the pre-lamination step.
Position the second component. Apply temperature and pressure for the bonding time to reach sufficient bonding strength.

Setting:
  • Temperature¹ 75 – 110 °C
  • Pressure² 2 – 4 bar
  • Time 10 – 480 s

Short cycle times can be achieved at 110 °C bond line temperature. For activation at lower temperatures, increase the heat-press time or combine a short heat-press step with oven curing.

To reach maximum bonding strength, surfaces should be clean and dry. Allow at least 1-2 hours dwell-time after bonding before performance testing. Final bonding strength will be reached after 24 hours.

Bonding strength values were obtained under standard laboratory conditions (Material: PC/PC; bonding conditions: temperature (jig) = 90 °C; pressure = 5 bar; time = 120 sec).

Storage:
tesa recommends storage in original packaging in cool and dry conditions.
Low Temperature Reactive should not be exposed to more than 35°C before bonding (during transport, storage and converting).
The shelf life is 15 months after coating date. For the actual shelf life please refer to the best before date on the label in the log roll core.

¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured in the bond line.
² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transferred from jig surface directly to the bonding area.

Technical properties

Backing material

none

Color

translucent

Total thickness

100 µm

Type of adhesive

low temperature activated reactive adhesive

Type of liner

PE-coated paper

Bonding strength (push-out)

6.5 N/mm²

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.

Downloads
Related products