Increasing thermal conductivity of host polymer used with laser engraving methods and compositions
First Claim
1. A multi-layered identification document comprising:
- a core material layer;
a first laminate over the core material layer;
a second laminate over the first laminate;
a laser sensitizing additive to the first laminate including a first quantity of at least one of copper potassium iodide (CuKI3), Copper Iodide (CuI), potassium iodide (KI), sodium iodide (NaI) and aluminum iodide (AlI);
a laser sensitizing additive to the second laminate including a second quantity of at least one substance related from the group comprising of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester.
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Accused Products
Abstract
the invention provides a composition having laser engraving properties, comprising a host material and a laser enhancing additive. The host material comprises a material, such as a polymer, modified by a first process, whereby the host material as modified by the first process has increased thermal conductivity as compared to the host material before the first process. The laser enhancing additive comprises a first quantity of at least one of copper potassium iodide (CuKI3), Copper Iodide (CuI), potassium iodide (KI), sodium iodide (NaI), and aluminum iodide (AlI), and a second quantity of at least one substance selected from the group consisting of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester.
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Citations
12 Claims
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1. A multi-layered identification document comprising:
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a core material layer; a first laminate over the core material layer; a second laminate over the first laminate; a laser sensitizing additive to the first laminate including a first quantity of at least one of copper potassium iodide (CuKI3), Copper Iodide (CuI), potassium iodide (KI), sodium iodide (NaI) and aluminum iodide (AlI); a laser sensitizing additive to the second laminate including a second quantity of at least one substance related from the group comprising of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A process of making an identification document comprising:
- providing a core layer material;
overlying a first laminate over the core material, wherein the first laminate includes a first laser sensitizing material having first quantity of at least one of copper potassium iodide (CuKI), copper iodide (CuI), potassium iodide (KI), sodium iodide (NaI) and aluminum iodide (AlI);
overlying the first laminate with a second laminate, wherein the second laminate includes a second laser sensitizing material having a second quantity of at least one substance selected from the group consisting of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate and thioester; andfusing together the core laser material, the first laminate and the second laminate using at least one of heat and pressure. - View Dependent Claims (10, 11, 12)
- providing a core layer material;
Specification