Laser Etching of Fine Lines on ITO/PET Film Substrate for Capacitive Touch Screen Conductive Silver Paste

Touchscreen conductive silver pastea kind of Low impedance slow drying silver pasteIt is composed of ultrafine silver powderDeveloped with low-temperature curing thermoplastic resin, suitable for laser etching process of fine circuits in capacitive touch screens.

Typical applications

Laser etching of fine circuits on ITO/PET film substrates for capacitive touch screens.

General characteristics

Touchscreen conductive silver pasteIt has good printability, conductivity, hardness and adhesion, and matches well with carbon paste and insulating ink

Performance Description

colour	silver gray
Solid Content	60 ± 2% (plus or minus 2% tolerance, calculated by weight)
Viscosity	25-35Pa. S（25±1℃）
sheet resistivity	＜10mΩ/□（25μm）
adhesion	Use 3M 600 adhesive to pull the silver wire at a 90 degree angle without any detachment
hardness	Chinese pencil ≥ 2H

Instructions and guidance for use

Substrate: ITO/PET film.

Mixing: thoroughly mix before use.

Dilution: After stirring evenly, this product can be used. Do not add diluents. If diluents are added, product quality and performance cannot be guaranteed. If there are special requirements, a matching diluent should be used. It is recommended to gradually add the diluent at a ratio of 0.5%, and the recommended amount of diluent should not exceed 2%.

Printing: This product can be used for screen printing of 60 μ m/60 μ m (line width/line spacing) fine lines on ITO/PET film, and for laser etching of 30 μ m/30 μ m (line width/line spacing) and above fine lines. The scratch plate hardness during printing is 75A or 80A.

Recommended curing process

Thickness: Dry film 6-10 μ m

Wire mesh: 400-600 mesh stainless steel wire mesh or composite polyester wire mesh, with an angle of 45 ° and a screen thickness of 8 μ m.

Oven: ITO/PET film at 130 ℃ for 45 minutes, ITO/glass at 150 ℃ for 45 minutes