Detailed explanation of liquid injection and solid state injection process for silicone products
Editor:UNION Time:2019/12/19
During the processing of silicone products, different processing methods are used in different products. Of course, it still depends on the product quality requirements and cost control. Most of the silicone products in the injection process will know the liquid injection processing method, except for liquid injection molding. , Solid products can also use the injection molding process. Although this method is familiar with the hydraulic molding machine, there are still some differences in the products made. So what kind of processing method is it?
Everyone knows that liquid silicone rubber products are mainly processed by mold injection molding. Technically, it is a relatively mature process. In the processing process, it mainly injects liquid rubber into the hot runner mold, and the injection nozzle is injected into the mold. Cavity, after low temperature molding, platinum vulcanizing agent has a low temperature and fast curing speed, so the production efficiency of liquid silicone products is also relatively high, and the products produced have better surface tension, high stability, and better performance than solid silicone. Feel and stretch resilience.
In the processing of solid silicone products, the reinjection process has a similar processing method to that of the liquid, but there are the same production methods as the solid, using the same machine and raw materials, but the mold is the same as the liquid silicone mold, mainly extrusion. Feeding to the root of the product, this method can use the same solid silicone hardness, which is strongly extruded into the cavity and molded by the pressure of the machine, but it is naturally not as good as its liquidity compared with the liquid silicone material.
The advantage of this processing method is that the product can avoid a lot of poor appearance and good control of the parting line. It is mainly for some customers to avoid some aesthetic appearance and product quality problems. It also has many disadvantages. For example, the amount of glue used is high, the cost is high, and the processing is complicated. The mold must be added and the mold core must be manually lifted. The manpower is large, and the processing efficiency of the product is low, so this is also rarely used by silicone product manufacturers. One of the reasons for this process!