Silicone Adhesive For cellphone screen covers KL-2620A/B/C/D
KL-2620A/B/C/D is four components compound. Heat and fast cured type of silicone adhesive,no primer needed.Good flowing capability before cured ,The cured silicone adhesive has a good adhesion to stick with PET base material and improving the surface Stripping Resistance. After cured,has good adhesion strength, excellent exhaust,high transparency, no adhesive residue, high temperature resistance, high humidity, can directly replace the same level products of Dow Corning and KCC products.
The silicone adhesives are characterized by good leveling property, electrical insulating property, and high grade of transparency and easy to clean with water. Mainly applied to the computer display screen, mobile phone screen protector, PET touch screen film series.Can be coated to PET film by lamination machine.
No foggies on PET film
No fog , No white dots , super clean
High grade transparency ,Light transmission rate 94%,Screen effect is vivid
The eyes don't feel sleepy when long tem exposure to PET screens
Customised peeling (force) adhesion
Adjustable peeling strength at 0~ 1200g , spare from primering base
Precise concoction of peeling adhesion
Low peeling adhesion easy peel , high absorbing properties
Zero silicone transfer
No adhesive residue ,Zero silicone transfer in full weather
No adhesive remains
Double 85 tests
Peel adhesion don't grow heavier in high temperature & High humidity condition
Products quality more stable ,easy rework , no adhesive remains ,weather resistance
The supplier for Apple , Huawei
Appearance And Component：
2620A:Transparent colloid containing platinum catalyst.
2620B:Transparent silica gel
2620C:Tackifier(Increase the adhesion between PET film and silicone adhesive)
2620 D:pressure sensitive adhesive (increase D component ratio can increase the silicone surface stripping force)
Solid Content： 60%
Curing Condition: TC10：19S*150℃
Stored Condition: Room temperature
Light transmission: 94%
Refractive index (sodium yellow light wavelength 5893 10 ^ - 10 meters) : 1.48
Storage : Stored at room temperature for 6 months without mixing.
(For example, coated 10 microns stripping force 3g/25 mm)
1. Solid content 24% ,mixing uniformity with solvent by a ratio of A:B:C:D :Solvent =100:100:10:40:560
Solid content 35% ,mixing uniformity with solvent by a ratio of A:B:C:D :Solvent =100:100:10:40:300
2. Taking material according to proportion, first mix B material and C and solvent evenly, and then mixed with A material evenly for about 20 minutes.
3. Defoaming treatment with vacuum by requirements. Coating uniformity of silicone adhesive on the silicone or PET film surface by coating method.
4. Testing at laboratory baking for 2~3 minutes at 150℃.
For producing Baking temperature depend on coating thickness. Ranging from 90℃ to 160℃. For 10μm takes about 50～60 seconds.
1,The application ratio should be adjusted appropriate to different materials, the thickness of coating and weather conditions (temperature and humidness).The application ratio should better increase 5%~10% based raw ratio at hot and humid conditions.
2, Cleaning base materials and keep it dry, free of dust and oil.
3, Solvent requirement : mixed solvent is needed , Toluene :ethyl ketone=1:1, Or Xylene :ethyl acetate :cyclohexanone=80:15:5
4, Controlling and checking the viscosity during the coating process. Pay attention to the quantity for once and make it deeply cured.
5, Keep in a good and suitable condition for coating. The working shop should be dust-free at 25 ～35℃ and humidity controlled in 15 ~ 60%.
Much over dust will cause NG products, Low over temperature will cause bad leveling property and adhesion strength, Large over humidity will cause shrinkage
cavity of film. Low over humidity will cause potential safety hazard and whity by static.
6, The mixed silicone adhesive should be used up within 1 hour, if high viscosity happens, stop coating at once.
7,The work shop should be ventilated and workers should wear labor protection tools during the coating process. Away from open flame, high temperature and pay attention to static electricity.
8, Please read the product safety instructions before using.