Near-infrared ray shielding film, a method thereof, and a composition thereof
AssigneeZirco Applied Materials Co., Ltd.
InventorsShiou-Sheng Yang, Ming-Te Lai
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Abstract
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; blending the raw material of PET and the tungsten oxides-containing nanoparticles 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; 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.
Claims2
A method of manufacturing a near-infrared ray shielding film comprising:
- drying a raw material of PET at 110° C. for 12 hours until the raw material of PET has a water content below 30 ppm;
- vacuum drying Cs0.33WO3 nanoparticles at 80° C. for 12 hours, wherein each of the Cs0.33WO3 nanoparticles has a size of 68 nm;
- blending the dried raw material of PET and the dried Cs0.33WO3 nanoparticles at 240-330° C. by a twin screw extruder with a screw speed between 300 and 600 rpm to obtain a polyester mixture with 99.14 wt % of the raw material of PET and 0.86 wt % of the dried Cs0.33WO3 nanoparticles;
- extruding the polyester mixture at 50-60° C. to obtain a polyester sheet;
- and
- biaxially orientating the polyester sheet with an orientating rate of 30 meters per minute at 160-165° C.
Dependencies are inferred from the claim text.