The technology of silicone products is mainly divided into: extrusion, molding. Extrusion and molding are very complementary. For example, some stethoscope silicone tubes, silicone diversion tubes, and silicone heating tubes are excellent products that complement each other. These processes are different, but they are all developed for different industries. service. Now let’s talk about the grievances between some silicone tube extrusion processes and common molding processes.
Differences between extrusion process of silicone tube and silicone strip and silicone molded products:
1. From the perspective of use: silicone tube can meet some daily drainage, pressure resistance and other functions, the shape must have specifications such as round, square, e-shaped, Japanese-shaped, etc., the length also needs to be long It can be short, but it must be a complete extrusion process product after meeting these simple requirements, while silicone products are more diversified and can be customized according to demand. There are more methods of action than extrusion (silicon tube can also be customized). Shape rules can be customized at will. Some cluttered products can also have appropriate length (but not infinite)
2. Hardware mold: Custom type products are destined to be opened separately. Extrusion technology molds such as silicone tubes are relatively simple. They only need to be cut on a flat metal fixture and polished appropriately according to customer requirements. The general cost is also It is not expensive to control it at about 300 ~ 1500. The proofing fee is also included, and the mold of the silicone tube / strip can be used universally, so it is no problem to recycle for many times. The mold of silicone products is mainly divided into two parts. One is that the cost of the sample mold is not expensive between 500 ~ 2000, and the cost of the mold for the production of large goods is as high as 5000 ~ 50,000 and the bulky is made of steel 55C, including CNC. Various complicated processes, such as polishing, cutting, etc., result in the cost of the molding process die being several times higher than that of the extrusion die.
3. Molding process: The silicone tube needs to be extruded for the first time vulcanization, and vulcanized into the drying tunnel that is several meters long. It can be directly pushed through the cutting hole of the metal mold through the spiral tube of the machine head. Molded, so that the silicone tube extrusion process molding steps are not complicated, mainly by careful operation. Silicone molded products are carried out on a molding machine that weighs several tons. First, heavy metal fixtures need to be installed on the molding machine’s operating platform to close the mold and heat, then spray some Teflon to remove impurities and rust Heating is continued until it reaches a temperature at which the silica gel can be vulcanized. Therefore, the silicone tube extrusion process is vulcanized in a drying tunnel, and the silicone products are vulcanized in a high temperature hardware fixture.
4. Post-processing: The extrusion process of the silicone tube is infinitely long and then cut twice according to the length required by the customer. There are many production processes. Silicone products are particularly streamlined because they can be omitted in one step.