Additional Info
tesa® L-tape is a reactive adhesive. It is activated by UV or blue light (wavelengths of 365 nm or 460 nm) and can be used for bonding of opaque or translucent substrates.
Bonding of opaque substrates
The open time of tesa® L-tape enables the bonding of opaque substrates like plastics and metals. tesa® L-tape can be activated by UV or blue light before or after bonding to the first substrate.
Activation before bonding: The die-cut of tesa® L-tape is activated by UV or blue light. The covering liner of the die-cut must be light-permeable (e.g., clear PET) to enable the activation of the tape. After activation the die-cut is bonded onto the first substrate. The second substrate is then bonded within 10 minutes by applying pressure (≥ 3 bar).
Activation after bonding to the first substrate: The die-cut of tesa® L-tape is bonded onto the first substrate. After activation by UV or blue light, the second substrate is bonded within 10 minutes by applying pressure (≥ 3 bar).
Bonding of translucent substrates
Translucent substrates such as clear plastics can be bonded before activation by UV or blue light. At least one substrate must be light-permeable to allow the activation of tesa® L-tape. After applying tesa® L-tape to the first substrate, the second substrate is bonded by applying pressure (≥ 3 bar). The bonded parts are then exposed to UV or blue light to start the curing of the adhesive.
Pre-lamination conditions
Bonding of opaque substrates
The open time of tesa® L-tape enables the bonding of opaque substrates like plastics and metals. tesa® L-tape can be activated by UV or blue light before or after bonding to the first substrate.
Activation before bonding: The die-cut of tesa® L-tape is activated by UV or blue light. The covering liner of the die-cut must be light-permeable (e.g., clear PET) to enable the activation of the tape. After activation the die-cut is bonded onto the first substrate. The second substrate is then bonded within 10 minutes by applying pressure (≥ 3 bar).
Activation after bonding to the first substrate: The die-cut of tesa® L-tape is bonded onto the first substrate. After activation by UV or blue light, the second substrate is bonded within 10 minutes by applying pressure (≥ 3 bar).
Bonding of translucent substrates
Translucent substrates such as clear plastics can be bonded before activation by UV or blue light. At least one substrate must be light-permeable to allow the activation of tesa® L-tape. After applying tesa® L-tape to the first substrate, the second substrate is bonded by applying pressure (≥ 3 bar). The bonded parts are then exposed to UV or blue light to start the curing of the adhesive.
Pre-lamination conditions
- Before curing, tesa® L-tape has initial tack and can be applied like a common PSA tape
- A pressure of ≥ 1 bar should be applied to ensure proper wet-out to the surface
- Light source: lamp of 365 nm or 460 nm
- Light dose: 15-30 J/cm² at 365 nm or 30-50 J/cm² at 460 nm
- Recommended pressure: ≥ 3 bar
- Recommended bonding time: ≥ 10 s
![[en-en] tesa_HAF-black_dr_001](/en/files/images/202402/2/medium-11173881,11173881_padded1x1_18.webp "tesa_HAF-black_dr_001")
![[en-en] tesa_HAF-amber_dr_001](/en/files/images/202402/2/medium-11173882,11173882_padded1x1_18.webp "tesa_HAF-amber_dr_001")