Just like we squeeze toothpaste, the extruder head is also the shape of the cross-section of the product, there is a certain length, in the force and temperature under the action of the head out of the product has been vulcanized molding. This process of molding products are generally strip-shaped products, product cross-section can be a variety of. For example, rectangular strips, ring-shaped silicone tubes, and so on.
2, drip process
Silicone raw materials in liquid form, raw materials in the syringe inside the pneumatic and manual operation of the raw material drops to the mold, heating and vulcanization molding. This process belongs to manualized process, which requires a lot of labor. So the capacity is not high. It has a feature that one product can be dripped with many colors according to the requirements. So this kind of process is mostly used for making handicrafts. For example, multi-color silicone bracelet, silicone cell phone cover with various color patterns.
3, solid hot press molding process
This process is the use of hydraulic press temperature and pressure, with the help of molds to vulcanize the product out of the mold. This process is relatively low cost, high yield, the application is more common. It is mostly used for single-color silicone products. It can also be used for two-color and two-hardness products or multi-color and multi-hardness products, but the structure of the product is not flexible and limited. It can also be used to pack plastic and metal, also in the structure of the inflexible, and the temperature requirements of the packaged objects, general requirements of the packaged objects to be resistant to 180 degrees Celsius without deformation.
4, liquid injection molding process (liquid silicone products production process)
This process requires the equipment has silicone injection molding machine, press machine. Its raw materials are water-thickened, divided into A, B two components. It is the principle: the use of presses A, B components of raw materials in accordance with the 1:1 pressure to the injection machine barrel mixing, through the injection nozzle and then press it into the hot mold cavity molding. This process molding temperature is relatively low, 130 degrees can be. It can be used for plastic overmolding molding which is not too resistant to high temperature, which is advantageous than solid state hot pressing molding. ----Pin Zhuo