Waterproof breathable fabric and manufacturing method thereof

The invention belongs to the technical field of printing and dyeing textile, and particularly relates to a waterproof breathable fabric and a manufacturing method thereof. The product developed by the invention comprises a polyester fiber base layer, a TPU hot melt adhesive layer coated on the surface of the polyester fiber base layer, a hollow nano silicon dioxide microbead layer coated on the surface of the TPU hot melt adhesive layer, and a PU/FPU/PVB nanofiber layer coated on the surface of the hollow nano silicon dioxide microbead layer; during manufacturing, the TPU hot melt adhesive layer is formed on the surface of the polyester fiber base layer through electrostatic spinning; dispersing hollow nano silicon dioxide microspheres in a solvent, then coating the surface of the TPU hot melt adhesive layer with the hollow nano silicon dioxide microspheres, and drying to remove the solvent so as to form a hollow nano silicon dioxide microsphere layer; pU resin, FPU resin and PVB resin are dissolved in a solv