1. Molding

Compression molding is the most common production process. It is mainly completed by the cooperation of the mold, and the shape of the mold determines the shape of the silicone product. Molded silicone products are usually formed by applying pressure through a vulcanizing machine after placing solid silicone raw materials with vulcanizing agents in a high-temperature mold, and high-temperature sulfur is solidified. The hardness of molded silicone is usually 30°-80°. This production process Simpler and applicable to all silicone products.

2. To shoot (inject)

This process requires relatively high quality, and is a combination of liquid silicone and plastic. Its products show good thermal stability, cold resistance, excellent electrical insulation properties, and no toxic substances are produced when burning.
Therefore, it has become an irreplaceable material in the production design of health products, automobiles, baby products, medical products, diving products, kitchen utensils and seals.

3. Solid state transfer

In the processing of solid silicone products, the transfer injection process is very similar to the liquid state, but it is the same as the solid state production method, using the same machine and raw materials, but the mold is the same as the liquid silicone mold, mainly extrusion. Feeding the product to the root of the product, this method can use the same hardness of solid silica gel, which is strongly squeezed into the cavity and molded by the pressure of the machine, but compared with the liquid silica gel material, it is naturally not as fluid as it is. The advantage of this processing method is that the product can avoid a lot of poor appearance, and the parting line is well controlled, mainly for some customers to avoid some appearance problems of parting beauty and product quality, but it also has many disadvantages. , For example, the amount of glue used is large, the cost is high, and the processing is complicated. The middle plate of the mold must be added and the mold core needs to be manually lifted. The manpower is large, and the processing efficiency of the product is low, so this is also rarely used by silicone product manufacturers at present. One of the reasons for this machining process!

4. Extrusion

Extrusion molding, extruded silicone products are usually formed by extruding silica gel through an extrusion machine. Generally, the shape of extruded silica gel is long, and the tubular shape can be cut at will. The shape of the products made by the extrusion process is relatively simple, mostly strips. shape. Silicone tubes are widely used in the fields of medical and mechanical equipment. It can also be used as a buffer in the packaging material.

5. Calendering

The silicone rubber is kneaded and kneaded by adding silica, silicone oil, etc. to make a mixed rubber, and then the sheet is calendered. The film produced by calendering has obvious difference in physical and mechanical properties in the longitudinal direction and the transverse direction. This phenomenon is called the calendering effect. The specific performance is that the longitudinal tensile strength of the film is greater than the transverse direction, the transverse elongation at break of the film is greater than the longitudinal direction, and the longitudinal shrinkage rate of the film is greater than the transverse direction. The calendering effect is the result of the orientation of macromolecules and needle-like and flake-like compounds in the rubber compound along the calendering direction during the calendering process. The size of the calendering effect is related to the composition of the rubber compound, the calendering temperature, the speed, and the speed ratio. For larger products, such as silicone sheets, silicone plates.

6. Perfusion

The operation method of filling mold or filling mold: filling mold or filling mold is used for relatively smooth or simple products. There is no mold line to save labor and time, that is, the product or model you want to copy is surrounded by plastic or glass plates. Get up, pour the evacuated silica gel directly onto the product, and after the silica gel is dried and formed, take out the product and the mold is formed (Note: The perfusion mold is generally made of silica gel with relatively soft hardness, so that it is easier to demould, and it is not easy to mold. It will damage the products in the silicone mold). It belongs to the combination of solid and liquid, and is used for products such as mobile phone sets, sex toys, etc.