Low visibility laser marking additive
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United States of America Patent
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-
Mar 6, 2007
Grant Date -
Jun 23, 2005
app pub date -
Nov 1, 2004
filing date -
Nov 7, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Laser marking of plastic material is achieved by incorporating into the plastic a laser marking particulate additive having a particle size of less than 100 nm. A mixed oxide particle of tin and antimony having a particle size of 10 70 nm is useful as a laser marking additive when using a YAG laser. A metallic powder can further be added to improve marking contrast.
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