Additional Info
tesa® UV epoxy is a reactive adhesive. It is activated by UV light. tesa® UV epoxy can be used for bonding of translucent or opaque substrates.
Bonding of opaque substrates
The open time of tesa® UV epoxy enables the bonding of opaque substrates like plastics and metals. tesa® UV epoxy can be activated by UV light as a die-cut or already pre-laminated onto the first substrate.
Activation of die-cuts: First the die-cut of tesa® UV epoxy is activated by UV 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 pre-laminated onto the first substrate. The second substrate is then bonded by applying sufficient pressure (≥3 bar). Pre-lamination and bonding must take place within 5 min after activation.
Activation of pre-laminated parts: First remove the covering liner of tesa® UV epoxy and pre-laminate the tape onto the first substrate. The pre-laminated parts are then exposed to UV light. The second substrate is bonded by applying sufficient pressure (≥3 bar) within 5 min after activation.
Bonding of translucent substrates
Translucent substrates such as clear plastics can be bonded before activation by UV light. At least one substrate must be light-permeable to enable the activation of tesa® UV epoxy. First remove the covering liner of tesa® UV epoxy and pre-laminate the tape onto the first substrate. The second substrate is then bonded by applying sufficient pressure (≥3 bar). The bonded parts are then exposed to UV light to start curing of the adhesive.
Pre-lamination conditions
Bonding of opaque substrates
The open time of tesa® UV epoxy enables the bonding of opaque substrates like plastics and metals. tesa® UV epoxy can be activated by UV light as a die-cut or already pre-laminated onto the first substrate.
Activation of die-cuts: First the die-cut of tesa® UV epoxy is activated by UV 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 pre-laminated onto the first substrate. The second substrate is then bonded by applying sufficient pressure (≥3 bar). Pre-lamination and bonding must take place within 5 min after activation.
Activation of pre-laminated parts: First remove the covering liner of tesa® UV epoxy and pre-laminate the tape onto the first substrate. The pre-laminated parts are then exposed to UV light. The second substrate is bonded by applying sufficient pressure (≥3 bar) within 5 min after activation.
Bonding of translucent substrates
Translucent substrates such as clear plastics can be bonded before activation by UV light. At least one substrate must be light-permeable to enable the activation of tesa® UV epoxy. First remove the covering liner of tesa® UV epoxy and pre-laminate the tape onto the first substrate. The second substrate is then bonded by applying sufficient pressure (≥3 bar). The bonded parts are then exposed to UV light to start curing of the adhesive.
Pre-lamination conditions
- Before curing tesa® UV epoxy has initial tack and can be pre-laminated 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
- Light dose: 2.5 - 5 J/cm² UV-A
- Activation time: ≥ 5 s
- Pressure: ≥ 3 bar
- Bonding time: ≥ 10 s
