In manufacturing process of flat panel display, double sided tape has been used for adhesion of protection films to prevent dirt or damage of functional films and panels.
However, adhesion by this double sided tape requires many processes such as “double sided tape cut according to adhesive surface”, “adhesion of double sided tape”, and “removal of release paper”.
Also, the problems of wastes such as margin at the time of attaching the tape to release paper and adhesive surface also may occur.
However, utilization of UV adhesive enables to solve the problems of both process number and wastes.
Adhesive enables adhesive and retentive strength to have variation.
The following is the image of adhesive and retentive strength provided by UV adhesive.
We also have CAT series and UV TAC series as our adhesives.
The following is an example of home appliance used for decoration film adhesion.
Substituting UV adhesive for double sided tape in various products other than flat panel display realizes efficiency in manufacturing process.
Physical property and resistance (reference value) of UV TAC 10810 are as follows.
* Characteristic value of adhesive and retentive strength according to JIS Z-0237 is exhibited as follows.
|Catalyst additive amount||0%||3%||5%||0%|
|Curing condition （mJ/cm2)||400||600||800||400|
|Adhesive strength (180° peeling) （gf/25mm) *1||3400||2600||2520||2080||1540||1300|
|Retentive strength (1kg load) （mm/1hr) *2||0.5||0.2||0.1||0||0||0.5|
Substrate: PET laminate: SUS plate Catalyst: UV TAC 10810 Catalyst for adhesive
Leave 24 hours after laminate and measure adhesive and retentive strength (Measurement environment: 23°C)
*1 Measurement method of adhesive strength:
Test of peeling adhesive tape at an angle of 180° against stainless test plate
*2 Measurement method of retentive strength (Resistance to misalignment)
Apply specified load on adhesive tape attached to stencil test plate and measure misaligned distance. (The value “0” shows that there was no misalignment even with specified load)
|Heat resistance||85°C, 500 hours||No defect|
|Humidity resistance||60°C 95% RH 500 hours||No defect|
|Cold resistance||-40°C 500 hours||No defect|
|Heat cycle||-40°C<-->85°C 30 minutes each, 500 cycles||No defect|
Substrate: PET Printing conditions: T-150 Laminate: SUS plate
Curing conditions: 80W/cm metal-halide lamp: 2 bulbs, Belt speed 10m/min, lamp height 15cm
Leave 24 hours after laminate and implement resistance test.
Eject and then compare change in characteristic value (adhesive and retentive strength) with initial value.
Teikoku Printing Inks Mfg, Co., Ltd./Laboratory
Tel: +81-3-3800-6760, Fax: +81-3-3800-6603