Process for producing a conductive coating on glass or on enamelled steel and substrates coated by this process
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United States of America Patent
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Mar 11, 2003
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N/A
app pub date -
Sep 22, 2000
filing date -
Sep 24, 1999
priority date (Note) -
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Abstract
The invention relates to a process for producing a conductive coating on glass and enamelled steel using a screen-printable aluminum paste. The paste to be used contains: 40 to 80 wt. %, in particular, 50 to 75 wt. % aluminum powder; 5 to 40 wt. %, in particular, 9 to 25 wt. % glass frit having an initial softening temperature of 400 to 700.degree. C., in particular, 420 to 580.degree. C.; 10 to 35 wt. % of a liquid or thermoplastic medium; and 0 to 10 wt. % sintering aid. The substrate coated with the paste is heated at 500 to 750.degree. C., in particular, 590 to 690.degree. C. The coating on the substrate is characterized by having a low specific resistance of less than 100 .mu.ohm.multidot.cm, in particular in the range of 10 to 70 .mu.ohm.multidot.cm, and good adhesion.
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