What is the difference between silicone cold runner and plastic hot runner?
Silicone cold runner and plastic hot runner in the injection molding process each has its unique features, the specific difference is as follows:
Material characteristics: silicone cold runner: silicone cold runner is usually made of silicone material, has excellent high temperature resistance, corrosion resistance, suitable for high temperature plastic material injection molding.
Plastic hot runner: Plastic hot runner is usually made of metal materials (such as copper, aluminum, etc.), has good thermal conductivity, suitable for injection molding of plastic materials that need to be heated.
Silica gel cold runner: Silica gel cold runner mainly reduces the temperature of plastic materials through cooling water or other cooling media to speed up the cooling speed in the injection molding process and improve production efficiency.
Plastic hot runner: Plastic hot runner mainly through heating elements (such as heating rods, heating tubes, etc.) to increase the temperature of plastic materials, in order to maintain the flow of plastic materials in the runner, to avoid molding defects caused by excessive cooling.
Scope of application: silicone cold runner: silicone cold runner is suitable for injection molding with low temperature requirements for plastic materials, such as some general plastic products.
Plastic hot runner: Plastic hot runner is suitable for injection molding with high temperature requirements for plastic materials, such as some high-temperature plastics or special engineering plastics products.
Cost and maintenance: silicone cold runner: silicone cold runner is relatively simple, low cost, and relatively easy to maintain.
Plastic hot runner: Plastic hot runner due to the need for heating elements, high cost, maintenance and operation is relatively complex.
Own mold room professional engineering team to draw to sample processing customization
In addition, there are also differences between the two in application fields and advantages.
Silica gel cold runner has a wide range of applications in liquid silica gel mold, its design is simple, widely used, and can reduce waste, save raw materials, reduce production costs.
The plastic hot runner is suitable for a variety of plastic characteristics and product shapes, through different combinations of hot nozzle and runner plate, can adapt to various product needs.
At the same time, because the plastic in the flow channel always maintains a molten state, the molding cycle of the product is shorter, the material loss is less, and the material is more saved.
In summary, the silicone cold runner is mainly used for general injection molding, while the plastic hot runner is suitable for molding processes with high temperature requirements for plastic materials.
In the selection need to be based on the specific production needs and product requirements to make a reasonable choice in practical applications, according to the specific product characteristics and production needs to choose the appropriate flow channel type, in order to achieve the best production results and economic benefits.
