Silicone Parts Manufacturing Process

Mold Making

• Design & Master Mold Creation:
  Based on the product design drawings, a master mold is created using materials such as metal or resin.

• Mold Fabrication:
  A negative mold is produced from the master mold. The mold structure determines the final shape of the silicone product.
   

Silicone Material Preparation

• Material Selection:
  Select suitable silicone material according to product requirements, such as food-grade or industrial-grade silicone. Common materials include Liquid Silicone Rubber (LSR) and High Consistency Rubber (HCR).

• Mixing:
  Mix component A and component B of the silicone according to the required formula to achieve a uniform blend.
   

Molding Process

• Compression Molding:
  The mixed silicone is placed in the mold and cured under heat and pressure to form the product.

• Injection Molding:
  The silicone mixture is injected into a closed mold and cured at high temperature. This method is ideal for producing complex shapes and large-volume orders.

• LSR Liquid Injection Molding:
  Two liquid silicone components are precisely metered and mixed, then injected into the mold for rapid vulcanization at high temperatures, achieving high efficiency and precision.
   

Vulcanization

• Heat Curing:
  Under a controlled temperature (typically 150–200°C) and pressure, the silicone undergoes a chemical reaction to convert from a semi-liquid to an elastic solid.

• Completion of Vulcanization:
  The silicone is fully cured within the mold, forming the finished product shape.
   

Demolding

• Cooling:
  Allow the mold to cool to a safe temperature.

• Product Removal:
  Carefully remove the cured silicone product from the mold.
   

Post-Processing

• Trimming:
  Remove excess flash or molding burrs from the product surface.

• Cleaning:
  Clean the product to eliminate mold release residue or other contaminants.

• Quality Inspection:
  Conduct appearance and functional checks to ensure the product meets quality specifications.