How are silicone rubber products made?

In our daily life, we can often see silicone rubber products ranging from mobile phone protective covers to car tires, but are you curious about how they are made? Although there are many types, the production processes are similar. Today Let me tell you about science
Silicone Rubber Products

The first is to prepare the ingredients. Raw rubber is the most basic, followed by auxiliary materials used to improve certain properties of the product (such as acid and alkali resistance, insulation, flame resistance), and finally fiber and metal materials used to limit product variation, although there are several materials. However, the amount of each raw material is very particular, which is also the key to testing the experience level of workers.

The second step is plasticizing. Because raw rubber is elastic, it is not conducive to processing, and plasticizing is the process of making raw rubber plastic.

The third step is mixing. We often hear that products must have chemical resistance, oil resistance, flame resistance, insulation, etc. These properties are obtained by adding auxiliary materials in this step (such as flame retardants, antistatic agents, fillers, etc.), The specific method is to mix the plasticized raw rubber with the compounding agent, put it into the rubber mixing machine and stir, so that the compounding agent and the raw rubber are fully and evenly mixed together. Mixing is an important process in the production process. The uneven mixing of raw rubber and compounding agent after refining will eventually affect the performance of the product.

The fourth step is molding. This step is to see the real silicone rubber products. There are many molding methods, such as: compression molding, extrusion molding, injection molding, calendering molding, because of too much content, limited space and too professional, please Everyone Baidu,

The fifth step is vulcanization. Vulcanization is to add some vulcanizing agent like sulfur to the semi-finished product and heat it at a set temperature, and finally it will be transformed into an elastic process. It should be noted here that insufficient or too long vulcanization time will affect the performance of the product

The final step is inspection, including visual inspection (for burrs/blemishes), dimensional inspection (for correct size), performance test (for chemical resistance, oil resistance, flame resistance, insulation, etc.)

Founded in 1993, Hangzhou Biaozheng Rubber Plastic Fittings Factory is a professional enterprise engaged in the research, design and manufacture of rubber diaphragms.
As China Molded Diaphragm Manufacturers and OEM Fabric Reinforced Diaphragms Factory , The company not only has a complete set of rubber molding products such as kneading machine, open mill, filter machine, flat vulcanizing machine, etc., but also set up a mold processing and production center, which can customize various rubbers Diaphragm for customers.
The main products: rubber diaphragm obtained national patent in 1999, the service life of more than 200,0000 times. It has certain advantages in the development of special products such as silicone rubber, fluorine rubber, nitrile rubber, ethylene propylene rubber, butyl rubber and other products resistant to nuclear radiation, high temperature resistant oil, high temperature resistant steam and various chemical media.