High temperature resistant aluminized BOPP isolating membrane

The utility model relates to a high temperature resistant aluminized BOPP (Biaxially-oriented Polypropylene) isolating membrane, and belongs to the technical field of improvement on biaxially oriented polypropylene thin film structure improvement. The high temperature resistant aluminized BOPP isolating membrane is formed by sequentially compounding an aluminized coating I, a biaxially oriented polypropylene thin film layer and an aluminized coating II, wherein the thickness of the aluminized coating I is 0.8-1 microns, the thickness of the biaxially oriented polypropylene thin film layer is 10-60 microns, and the thickness of the aluminized coating II is 0.8-1 microns. According to the high temperature resistant aluminized BOPP isolating membrane, disclosed by the utility model, the aluminized coatings are both compounded on the upper surface layer and the lower surface layer of the biaxially oriented polypropylene thin film layer, so that the melting point is increased to about 175 DEG C, the steel cooling time is shortened, and the efficiency is improved.