The isostatic pressure silicone rubber sheet is used in the vacuum packaging stage of the isostatic pressing. When the laminated product is placed on the backing plate, the silicone rubber sheet is placed on top of the product, and then vacuum sealed in a bag. The silicone rubber sheet not only helps distribute the pressure evenly across the product but also protects the packaging bag from being crushed or torn during the isostatic pressing process, ensuring the stability and effectiveness of the isostatic pressing.