Polymer moulding materials for producing a partial color change by laser energy, particularly for the production of colored markings
First Claim
1. A laser-inscribable polymer molding material comprising a polymer selected from the group consisting of polyamide, polyester, polycarbonate, polyester carbonate, polymethacrylate, BS, polystyrene, polyoxymethylene and polyolefin, and 0.1 to 3% by weight of a colorant combination containing an organic dye or pigment, an inorganic pigment of the same color, and carbon black, wherein the polymer molding material has an initial color and further wherein portions of the polymer molding compound that have absorbed laser energy have the same color as said initial color but a lighter tone than portions of the polymer molding material that have not absorbed said laser energy.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to colored polymer moulding materials which give rise to colored markings on a dark background with a very high contrast ratio on the absorption of laser energy.
-
Citations
6 Claims
- 1. A laser-inscribable polymer molding material comprising a polymer selected from the group consisting of polyamide, polyester, polycarbonate, polyester carbonate, polymethacrylate, BS, polystyrene, polyoxymethylene and polyolefin, and 0.1 to 3% by weight of a colorant combination containing an organic dye or pigment, an inorganic pigment of the same color, and carbon black, wherein the polymer molding material has an initial color and further wherein portions of the polymer molding compound that have absorbed laser energy have the same color as said initial color but a lighter tone than portions of the polymer molding material that have not absorbed said laser energy.
Specification