Why does flash appear in rubber silicone molding?

1. The Silicone mold is one of the main reasons for the appearance of the cloak. In terms of the mold, if the material of the steel is low, it will age due to long-term exposure to the environment, strength, and temperature. The loss of the knife edge and the self-demolition seat is too large, resulting in the subsequent production of the cloak. , There are problems during mold processing, such as CNC milling cutter tool compensation, inaccurate machine level, edge inspection, and tool sets, etc., which cause mold precision is not high, so high-quality steel and precision equipment and tools should be selected for mold Carry out processing to ensure high precision of the parting line of the mold.

   
   

   

2. Raw materials are the key to making silicone products. Combined with molds, it is difficult to remove the edge, mainly because the material is too brittle or the tension is too low, which makes the cloak appear jagged and indirect fracture, which is difficult to deal with, especially for some complex structures. The self-disassembly of the product cannot achieve precision, and the hardness and softness of the raw materials lead to the cloaking phenomenon. The higher the hardness, the greater the brittleness of the product, which makes it difficult for silicone product manufacturers to trim.

3. Silicone manufacturers have processing problems. Putting in too many raw materials will cause the product to tear if the burr is too thick. Therefore, controlling the weight of the material is the key to solving the cloak. If the rubber is not placed evenly on the surface of the mold during the placement The placement of the raw material will cause the extrusion deviation of the raw material, and it will be difficult to remove the edge, so the control of the rubber material and the placement position have a great relationship with the cloak processing.

Based on the above reasons, in general, the molding process of silicone products in the rubber mixing process cannot avoid the appearance of burrs, and the processing manufacturers of silicone products can only control the product defects and burrs to the minimum as much as possible or need to be in every link. Control, the main problem lies in the mold itself. For example, if the silicone mold is under strict quality control, then the subsequent product quality issues and production cloak issues can be maximized, and labor and raw materials can be processed during the processing. Improve and improve, so control it from the production process as much as possible.