During the processing of silicone products, different processing methods are applied to different products. Of course, it depends on the quality requirements of the products and cost control. Most of the silicone products in the injection process will be liquid injection processing, except for liquid injection molding. Solid-state products can also be used in the injection molding process. Although this method is different from the hydraulic molding machine, but the product is still different, so what kind of processing is it?
Everyone knows that liquid silicone rubber products are mainly processed by mold injection molding. It is a relatively mature technology in the process. In the process of processing, it mainly sprays liquid rubber into the hot runner mold, and the guide material is injected into the mold. After the low temperature molding, the temperature of the platinum vulcanizing agent is low and the curing speed is fast, so the production efficiency of the liquid silicone product is relatively high, and the produced product has better surface tension and high stability, and is better than the solid silica gel. Feel and stretch rebound strength.
In the processing of solid silicone products, the transfer process has a similar processing method to the liquid state, but it has the same production method as the solid state, using the same machine and raw materials, but the mold is the same as the liquid silicone mold, mainly extruded. Feeding to the root of the product, this method can use the same solid silicone hardness, and is strongly pressed into the cavity and molded by the pressure of the machine, but naturally it has no such fluidity compared with the liquid silicone material.
The advantage of this processing method is that the product can avoid a lot of poor appearance, and the control of the parting line is good, mainly for some customers to avoid some cosmetic parting beauty and product quality problems, and it also has many drawbacks. For example, the amount of glue is large, the cost is high, and the processing is complicated. It is necessary to add a mold plate and need to manually lift the core, the manpower is large, and the processing efficiency of the product is low, so this is also rarely used by manufacturers of silicone products. One of the reasons for this processing!