A NEAR-INFRARED RAY SHIELDING FILM AND A METHOD THEREOF

摘要

A method of manufacturing a near-infrared ray shielding film is disclosed. The method comprises: providing a raw material of PET; providing tungsten oxides-containing nanoparticles (2); blending the raw material of PET and the tungsten oxides-containing nanoparticles (2) to obtain a polyester mixture with 80-99.99 wt% of the raw material of PET and 0.01-20 wt% of the tungsten oxides-containing nanoparticles (2); rolling the polyester mixture to obtain a polyester sheet; and biaxially-orientating the polyester sheet with a orientating rate of 1-100 meters per minute at 60-300°C.