Patent ID: 9340059
Filing Date: 2016-05-17
CPC Classification: B32B,B41M,B42D,Y10T

Claim Text:
1. A laser engravable film, comprising: a first layer consisting essentially of a polycarbonate and an antistatic composition mixed within the first layer of polycarbonate, wherein the antistatic composition comprises 0.1-10% by weight of at least one ionic salt consisting of a nitrogen or phosphorous onium cation and a weakly coordinating fluoroorganic anion, the conjugate acid of said anion being a superacid; a second layer consisting essentially of polycarbonate and a laser engraving additive mixed within the second layer of polycarbonate; and wherein the static decay time of the laser engravable film is less than 30 seconds, and wherein the laser engravable film is capable of being laser engraved with a density of blackness greater than one.