LF371
Conductive Copper Ink, Thick layer, Rigid Substrates
Copprint LF371 Nano Copper Ink for high conductivity additive thick screen-printing on FR4, Glass, Alumina.
Technology: Screen printing
Appearance: Copper paste
Filler Type: Copper
Substrate: FR4, Photovoltaic cells, Alumina
Key Product Benefits
Drying: hot air
Sintering: Hot press, Laminator
Application: Conductive Nano Copper Ink for Additive Printing
Common Application: PCB, Photovoltaic cells
TYPICAL PROPERTIES: UNCURED NANO COPPER PASTE
Average particle Size, µm D50 < 1.0, D90 < 7.0
Solids Content, after 10 minutes @ 150ºC, % 90±1
Density, g/ml 3.9±0.2
Viscosity @ 250C , DVEHA Brookfield spindle 14,
60rpm, mPa∙s (cps) 30,000-40,000
Theoretical coverage @ 11 µm dry film thickness, 10.5 m²/kg
Shelf Life @ -10°C, days 180
Flash Point – See SDS
Drying and Sintering:
Copprint LF371 may be dried employing dry hot air, (near) infrared or ceramic lamps.
Drying cycle: 120sec @90°C (Hot air, Reflow oven)
Sintering cycle:
FR4: 5 sec @300°C (R2R Laminator)
FR4: 5-60 sec @ 250-320°C (Hot press)
PV: 12 sec @250°C (R2R Laminator)
PV: 10-30 sec @ 240-320°C (Hot press)
*Conditions (time / temperature) may vary based on application requirements, drying equipment,
oven loading and actual temperatures.
TYPICAL PROPERTIES: CURED NANO COPPER PASTE
Adhesion: tape test 3M Scotch 234 (Passed)
Cross cut test ISO 2409-2007 5b
Electrical Properties: FR4: Laminator @ 300°C, 5sec ohm/sq/25 μm <0.0025
FR4: Hot-press @ 275°C, 60sec ohm/sq/25 μm <0.0025
PV: Hot-press @ 250°C, 10sec ohm/sq/25 μm <0.0025
PV: Laminator @ 250°C, 12sec ohm/sq/25 μm <0.0025
DIRECTIONS FOR NANO COPPER INK USE
Copprint LF371 is supplied as a single-component formulation ready for use.
SCREEN PROPERTIES
Emulsion, Solvent resistant emulsion: 10 to 40 μm
Squeegee Shore Hardness: 70 to 90 Shore
Screen Type: Polyester screen, mesh 100 to 300
EQUIPMENT MAINTENANCE & CLEAN-UP
Equipment can be cleaned with Dowanol DB followed by aqueous solution.
10-20% w/w 2-amino-2-methyl-1-propanol. See Application Notes.
STORAGE AND HANDLING
Store sealed container under -10°C in a dry location.
(Storage above -10°C can adversely affect product properties.)
Paste removed from containers may be contaminated during use.
Do not return Paste to the original container.
Copprint is not responsible for paste which has been contaminated or stored under faulty conditions/
For safe handling of Copprint Nano Ink consult the Safety Data Sheet (SDS.
For technical data please see the Technical Data Sheet (TDS)
