How to deal with silicone mold sticking?
Silicone molds can be used for mass production of products such as cement, gypsum, cultural stones, candles, soap, resin, food, prosthetics, human skin masks, models, etc. During the production process, whether it is opening the mold or putting it into production, the demolding process must be carried out. However, during this process, the phenomenon of silicone mold sticking occurs, which means that the mold and the product are difficult to separate. At this time, destructive methods need to be used to solve the problem and classify the mold and the product, which can cause product deformation or tear and damage the silicone mold, resulting in a situation of both parties being harmed. How to deal with silicone mold sticking, how to ensure product integrity, and how to prevent silicone mold sticking?
Let's first analyze why silicone molds stick to the mold. The main reason is due to the raw materials used in the product, and the degree of demolding varies depending on the material. Cement, gypsum, and cultural stone products are relatively easy to demold because their materials have rough surfaces and larger pore sizes. Candles and soap are also difficult to demold, especially for resin and silicone products. The small and smooth surface pore size results in strong adhesion with silicone. The method of preventing silicone adhesive from sticking to the mold during mold opening or mass production of this type of product can be achieved by uniformly spraying release agent in the mold type or mold. There are several methods to obtain mold release agents: ① Purchase mold specific release agents online or offline; ② Purchase Vaseline from the pharmacy; ③ Use soap water or detergent water. Note that when using release agent, it must be evenly sprayed in every corner gap of the mold or mold. When using soap water or detergent water, the moisture must be dried. At this time, a hair dryer can be used to blow dry before proceeding with the next step. Spraying release agents can not only prevent silicone molds from sticking to the mold, but also prevent the occurrence of non solidification at the contact area between the mold and the mold during the mold opening process.
In addition to the product materials, there is also the mold making process to avoid silicone mold sticking. When making silicone molds, the mold seeds should be cleaned and polished. During the operation of the ratio, the silicone and curing agent must be stirred evenly, and attention should be paid to the details of the operation. Otherwise, when some parts do not solidify, it will become a silicone mold sticking phenomenon. Another thing is to choose a suitable mold opening method based on the product structure.