An LSR injection molding machine is a specialized piece of equipment used to produce parts from liquid silicone rubber (LSR) through a process called liquid injection molding (LIM). These machines are designed to handle the unique properties of LSR, which is a thermoset material that requires specific processing conditions to achieve proper curing.

• Dedicated LSR Injection Unit: Designed to handle the low viscosity of liquid silicone rubber
• Meter Mixing System: Precisely mixes two-part LSR components in specific ratios
• Static Mixer: Combines components to initiate the curing process
• Heated Mold: Triggers chemical reaction that cures the material
• Precise Temperature Control: Crucial for proper curing
• Fast Cycle Times: LSR cures from outside in, enabling faster production

• Capable of producing complex geometries and thin-walled sections
• Operates at lower injection pressures compared to thermoplastics
• High precision and repeatability for tight tolerance parts
• Withstands wide temperature ranges
• Excellent material properties including flexibility and electrical insulation

LSR injection molding serves multiple industries including:

• Medical: Seals, gaskets, catheters, breathing masks
• Automotive: Seals and gaskets
• Electronics: Keypads, connectors, insulators
• Consumer Goods: Baby products, kitchen utensils

Silicone rubber is available in liquid and solid forms with distinct characteristics:

• Liquid Silicone Rubber: High fluidity, produces transparent and odorless parts, food/skin safe, requires specialized equipment
• Solid Silicone Rubber: Low fluidity, more economical to process, compatible with conventional equipment