LASER MARKABLE SECURITY FILM

摘要

A security film including a support (1) and a laser markable layer (3), wherein the laser markable layer includes i) a laser additive; ii) a polymer selected from the group consisting of polystyrene, polycarbonate and styrene acrylonitrile; iii) an initiator; and iv) at least 15 wt% of radiation curable compound based on the total dry weight of the laser markable layer, wherein the radiation curable compound has a viscosity of less than 100 mPa.s at 25°C and at a shear rate of 100 s-1. A security document and a method for preparing the security film are also disclosed.