How to remove the edges of industrial grade liquid silicone mold opening?

After opening the mold with RTV-2 industrial grade liquid silicone, removing the edges is a very important process, which is to trim the edges of the silicone product cleanly. However, due to the processing technology or the silicone material itself, it is difficult to remove the edges and it is not done properly. In the case of cracks or residual burrs, we will analyze in detail the reasons why it is difficult to remove the edges.
    1. Quality issues of silicone raw materials: Sometimes silicone product manufacturers will use some cheaper rubber materials for production in order to reduce production costs. One of the most common problems with cheap rubber materials is insufficient tear strength and poor toughness.
   2. The vulcanization temperature is too high or the vulcanization time is too long: Once the temperature is too high during the molding of silicone products, it will cause the product to become numb or brittle after molding. Whether it is numb or brittle, it will have a great impact on subsequent edge removal. . Excessive vulcanization time is also one of the main reasons for the product to become brittle.
   3. The vulcanization temperature is too low or the vulcanization time is too short. The vulcanization temperature is too low or the vulcanization time is too short, which will also have a certain impact on edge removal. Silicone rubber products are not flexible enough when they are not fully vulcanized, so the silicone mold will be torn when the edges are removed.
  4. Mold reasons: The mold self-disassembly design is unreasonable or the production quality is not up to standard or the mold has been worn for too long, making it difficult to remove the edges. The mold designer’s unreasonable mold splitting when designing the mold, and the unsharp self-disassembling openings when making the mold will lead to product failure. It is difficult to remove the edges after forming.