Method and liquid composition for marking substrates made of plastics material
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United States of America Patent
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Aug 15, 2000
Grant Date -
N/A
app pub date -
Nov 27, 1998
filing date -
Oct 23, 1995
priority date (Note) -
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Abstract
A method of forming a mark on a substrate made of plastics material comprises the step of applying a basic solution to a surface portion having a prefixed pattern of the substrate. In a preferred embodiment, the basic solution is used in combination with at least one alkali-stable water-soluble polymer, to produce a viscous liquid composition, which is advantageously applicable to the substrate by means of pad-printing and silk-screen printing process.
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