White bubbles appear in the product, but the inside is empty or white foam when dissected. The main reasons are that there is air in the silicone material, and the air in the product expands when the pressure is released too quickly during the high-temperature and high-pressure vulcanization process, or The vulcanization time is too long or too short, the molding temperature is too high, and the number of exhaust gases is too high. The second reason is the lack of material. Some silicone product factory workers place the material unevenly before molding, and some have many problems. There is less of it, which leads to the shortage of materials in the processed products. During the vulcanization process, the vulcanization temperature is too high and the machine tool pressure is too low, which can also lead to product defects. When the molding temperature is too high during processing, the vulcanization of the silicone product rubber will be accelerated, and the flow performance of the silicone product rubber in the mold will be reduced, which will lead to the silicone product being smaller in size and thicker, resulting in defects.