LOCA Liquid Optical Clear Adhesive for touch screen of iPhone/ iPad/ G+G, PMMA+G /TV/Laptop/Navigator
LOCA are generally used in displays and touch panel applications. Application is expected to increase as mobile devices, televisions, tablets, monitors and laptops migrate to touch interfaces. Although there are many varied applications, PUNADE divides the applications into three categories:
Three common applications of LOCA
Touch Panel Sensor Assembly: To bond touch panel sensors that require two layers of ITO (indium-tin-oxide) coated glass. This type of bonding will eventually be replaced by direct bonding.
Cover Lens Bonding: To fill the air gap in touch panel sensors that utilize a cover lens (such as clear plastic PMMA) and the glass touch panel sensor.
Direct Bonding: To achieve the highest amount of contrast, such as in an outdoor viewing application, it is necessary to "directly bond" the cover lens to the LCD module.
---LOCA(OCR): Liquid optical clear adhesive sealant
Capacitive touch screen G+G, PMMA+G
Touch screen and display panel
· 3D function and the display panel
---Function of LOCA
· Reducing the light refraction, improve light transmittance and contrast
· Eliminating the phenomenon of Newton's ring and the rainbow
· Dust and moisture proofing
---Technological process
---Common Dispensing Path
--- Stitching
After the glue on the Lens, flip down to joint Sensor.
Joint clearance is 0.3 ~ 0.5 mm from target
--- Testing
--- Finished perfectly
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Model
No. |
Lamination |
Viscosty(25) |
Curing condition |
Yellowness |
Refraction Index |
Haze |
Shrinkage by Cure(%)_ |
|
SA5801 |
Glass/Glass |
1600cPs |
3000/Primer |
b<0.5 |
1.51 |
0.003 |
<3.0 |
|
SA5807 |
Glass/Glass |
1600cPs |
3000 |
b<0.5 |
1.51 |
0.003 |
<3.0 |
|
SA5809 |
Glass/Glass |
2500cPs |
3000 |
b<0.5 |
1.51 |
0.003 |
<3.0 |
|
SA5812 |
Acrylic/Glass |
1100cPs |
1300 |
b<0.5 |
1.48 |
0.003 |
<3.0 |
|
SA5820 |
Dam |
35000cPs |
1300 |
b<0.5 |
1.48 |
0.003 |
<3.0 |
|
SA5823 |
TP/Display |
2100cPs |
1300/Primer |
b<0.5 |
1.48 |
0.003 |
<3.0 |
|
Package |
50g/800g/1kg |
|
Shelf life |
12 months @8-28 |
Founded in DEC. 2003, SEPUNA has been engaged in researching, manufacturing and marketing automobile sealant and adhesive for 9 years.
Since the foundation, SEPUNA Chemical has been focusing on adhesive's researching and application. Then in 2005, We acquired PUNADE technology which is from Switzerland.
Within 9 years, SEPUNA mainly develops Silicone, Polyurethane and Epoxy resin adhesives. And in the future, we will enlarge our line to Unsaturated, Natural and Acrylic Resin adhesive.
After 9 years' improvement, by the keep researching and innovation, SEPUNA is already a mature adhesive supplier with the core competitiveness.
