Low visibility laser marking additive

Details Low visibility laser marking additive Low visibility laser marking additive

2007-03-06

2007-03-06

Le, H. Thi (Department: 1773)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

C430S108600, C430S108700, C977S951000

Reexamination Certificate

active

10976777

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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