SIMTEC uses the liquid silicone rubber injection molding to create a full range of precision, near flashless silicone parts and over-mold assemblies. Liquid silicone rubber molding has several advantages, including:

• High-volume production: Advanced LSR materials offer manufacturers the opportunity for cost-effective, high-volume production of complex liquid silicone injection molding parts.
• Low chance of contamination: The LSR fabrication process takes place in a closed system, which reduces the possibility of contamination because the operator does not have to touch the material, and it is not exposed to the environment.
• Higher level of automation: While the silicone gum rubber process is very labor intensive, LSR allows for the automation of injection equipment, tooling, and ejection equipment. This results in minimal labor cost to monitor the system and change out material drums.
• Quick cycle time: The cycle time for LSR components depends on the following elements:
  • Eliminates flash and waste: Liquid silicone rubber does not produce scrap from flash because of the ability to create molds that operate flashless.
  • The temperature of the mold and possible inserts.
  • The temperature of the material when it reaches the mold.
  • The geometry of the component.
  • The general vulcanization characteristics.
  • The chemistry of the curing material.

Silastic LSR allows for faster curing by preheating the injection barrel and cold runner to 40-80°C.

• Enhanced safety: The automation options make it unnecessary for operators to enter the molding area. Parts are removed from the injection-molding machine with conveyor belts, chutes or robots, which reduces the chances of burns or other safety concerns.

Liquid silicone rubber injection molding provides customers with a consistent, efficient and cost-effective processing method appropriate for a wide variety of applications.