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CONDUCTIVE PASTE FOR LASER ETCHING OF TOUCH SCREEN PANEL
Product De
DLS-70 is a one part, conductive paste designed primarily for the purpose of laser etching. It can be used with semi-automatic, and manual printers, and offers excellent residence time on the screen. The cured film has excellent electrical and mechanical properties with good adhesion to a variety surfaces(ITO coated film).
Processing Procedures
Application
Before use, take paste out of the refrigerator, leave it in a room in the sealed state for approximately one hour, then use after mixing well.
The material may be applied by screen printing, a 325 or 400mesh screen with a 6-10um organic emulsion backing is recommended. Use a hard silicone squeegee. Screens can be cleaned with organic solvents such as 1st Ethyl carbitol, 2nd Ethanol or Isopropyl Alcohol.
Dilute solution
Butyl Carbitol Acetate.(CAS : 124-17-4)
Curing
Minimum cure is 130℃ for 30 minutes. Cure time is only a guide. Optimum conditions will vary depending upon application and will need to be determined experimentally.
Storage
DLS-70 should be stored frozen until ready for application. The shelf life is 4 months(0℃ ~ 5℃) from date of manufacture.
Specification Data
Items Value Remarks
Silver content 70±2% TGA
Particle size D50 0.5~1.0 PSA
Viscosity
(cps) 10rpm 80,000~100,000 Brookfield
HBT-DVII
SP#14
@ 25 ± 0.5℃
TI(5/50) 4.0 ± 1.0
Volume resistance1 2.0 ≤ ×10-4Ωcm -
Adhesion Cross cut2 ≥ 5B ASTM D3359
Pencil hardness3 ≥ 2H -
Printability4 Continuous ≥ 150 times 325mesh,18
400mesh,18
Emulsion:6~10
Thickness 5~8
Laser etching image Printing 3D image
Test Condition
1. Printed samples cured at 130℃ for 30 minutes on glass.
2, 3. Printed samples cured at 130℃ for 30 minutes on ITO coated PET film.
4. The original designed value of the printing mask : Line width 2mm.