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Six Processes of Silicone Products

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Six Processes of Silicone Products

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Release time:
2021/12/13
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[Abstract]:

Today, I will introduce the six processes of silicone products:

 

  • Molded  

Compression molding, this manufacturing process is the most common. 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 made by high-temperature molds, after putting in solid silicone raw materials with vulcanizing agents, pressure is applied through a vulcanizing machine, and high-temperature sulfur is solidified. The hardness of molded silicone is usually 30°C-70°C. The process is relatively simple and suitable for all silicone products.

  • Ejection (injection)

This process requires relatively high quality, and is a combination of liquid silicone and plastic. Its products are characterized by good thermal stability, cold resistance, excellent electrical insulation properties, and no toxic substances will be produced during combustion. 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.

  • Extrusion 

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

  • Calendering

Silicone rubber is kneaded and mixed with white carbon black, silicone oil, etc. to form a rubber compound, and then calendered to produce a sheet. The film made by calendering has obvious differences in the physical and mechanical properties of the longitudinal and transverse directions. This phenomenon is the calendering effect. The specific performance is that the longitudinal tensile strength of the film is greater than the transverse direction, the transverse elongation 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 the macromolecules, needle-like and sheet-like compounding agents 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, calendering temperature, speed, speed ratio and so on. Used for larger products, such as silicone sheets, silicone plates.

 

  • Perfusion

The operation method of the injection mold or the injection mold: the injection mold or the injection 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 vacuumed silica gel directly onto the product. After the silica gel is dried and formed, take out the product and the mold is formed. It will damage the products in the silicone mold). It is a combination of solid and liquid, using products such as mobile phone covers, luggage covers, etc.

  • Coating

Fast vulcanization; strong adhesion; good fluidity, easy to defoam. Catalyzed by platinum complex, it is non-toxic and has no peculiar smell; excellent thermal stability and cold resistance (use temperature -60℃~200℃) after molding, it has good air permeability, heat resistance, and certain tensile strength; Excellent anti-slip performance; no pollution; low hardness; strong adhesion of planting glue. High tear strength; high transparency; good tensile properties. Abrasion resistance, washing resistance, high temperature resistance; high three-dimensional level, the fabric is smooth, soft and flexible, with excellent texture and elasticity. It is resistant to washing and dry cleaning. When applied to the cloth, it has anti-aging effect. Such as silicone gloves, rain boots, etc.