Patent ID: 9168696
Filing Date: 2015-10-27
Classification: B29C,B29K,B29L,B41M,C08K,Y10T

Abstract:
1. A method of inscribing a substrate, comprising: contacting the substrate with a laser beam to generate a mark, wherein the laser beam has a wavelength less than or equal to 500 nanometers, wherein the mark results from increasing the reflectivity of a thermoplastic material, wherein the thermoplastic material has an initial L* value, and wherein the mark has an increase in L* value of greater than or equal to 20 compared to the initial L* value, wherein the substrate comprises a composition comprising the thermoplastic material capable of absorbing light having a wavelength of less than or equal to 500 nanometers; and wherein the thermoplastic material, in the form a plaque having a thickness of 1 millimeter, has a visible transmission of greater than 70% as measured according to ASTM D1003-00 using D65 illumination and 10 degrees observer.