Infrared shielding film and method for manufacturing the same

A method for manufacturing an infrared shielding film, comprising:

• providing a first heat-insulating slurry material containing composite tungsten oxide particles and at least one second heat-insulating slurry material containing titanium oxide particles, wherein the composite tungsten oxide particles have a formula of CsxMyWO3-zNc, Cs represents cesium, M represents tin (Sn), antimony (Sb) or bismuth (Bi), W represents tungsten, O represents oxygen, N represents fluorine (F), chlorine (Cl) or bromine (Br), and x, y, z and c are each a positive integer and meet the conditions of x≤1.0, y≤1.0, y/x≤1.0, z≤0.6, and c≤0.1;
• and
• forming a polyester masterbatch into a multi-layered structure by a co-extrusion process, wherein the first heat-insulating slurry material and the at least one second heat-insulating slurry material are respectively applied to an inner molten layer and an outer molten layer that are laminated together in the co-extrusion process, so as to allow the multi-layered structure to include an infrared absorbing layer and a first infrared reflecting layer formed on a surface of the infrared absorbing layer;
• wherein the composite tungsten oxide particles are present in an amount of 0.1% to 10% by weight based on the total weight of the infrared absorbing layer, and the titanium oxide particles are present in an amount of 0.1% to 10% by weight based on the total weight of the first infrared reflecting layer.