silver conductor dls-70
conductive paste for laser etching of touch screen panel
product description
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.
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