Laser engraving methods and compositions, and articles...

Details Laser engraving methods and compositions, and articles... Laser engraving methods and compositions, and articles...

2011-04-19

2011-04-19

McNeil, Jennifer C (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

C524S413000, C430S945000, C430S616000

Reexamination Certificate

active

07927685

ABSTRACT:
The invention provides a composition having laser engraving properties, comprising a host material and an effective amount of a laser enhancing additive. The laser enhancing additive comprises a first quantity of least one of copper potassium iodide (CuKI3) or Copper Iodide (CuI), and a second quantity at least one substance selected from the group consisting of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester. The composition can be engraved with grayscale images by an Nd:Yag laser and can be added to laminates or coatings. The composition can be used during the manufacture of many articles of manufacture, including identification documents.

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