Precision and Performance: The Role of LSR Injection Molding Machines in Modern Manufacturing

In today’s high-demand manufacturing landscape, precision, durability, and material safety are more important than ever. One technology that has risen to meet these challenges is the LSR (Liquid Silicone Rubber) injection molding machine .
This specialized type of injection molding equipment is designed to process two-part platinum-cured silicone , enabling the production of high-quality, heat-resistant, and biocompatible parts used across industries such as healthcare, automotive, electronics, and consumer goods.
An LSR injection molding machine is a fully automated system specifically engineered to handle liquid silicone rubber , a viscous, two-component material that cures into a flexible yet durable solid when exposed to heat.
Unlike traditional thermoplastic injection molding, LSR molding involves precise metering, mixing, and injection of Part A and Part B components before curing under high temperature and pressure inside a mold cavity.
Metering and Mixing Unit : Ensures accurate 1:1 ratio between base and catalyst.
Injection Unit : Delivers the mixed material into the mold with consistent pressure.
Heated Mold System : Enables fast and uniform curing.
Automation Integration : Allows for robotic part removal and in-line quality control.
Key Advantages of LSR Injection Molding
High Precision and Consistency
Capable of producing complex, tight-tolerance parts ideal for medical devices and microelectronics.
Excellent Material Properties
LSR offers superior thermal stability (from -50°C to +200°C), chemical resistance, and long-term durability.

Biocompatibility
FDA-approved grades make LSR suitable for food contact, baby products, and surgical implants.
Efficient Mass Production
Fast cycle times and minimal waste due to low shrinkage and no sprue runners (cold runner systems).
Automated and Cleanroom-Friendly
Ideal for sterile environments like pharmaceutical or medical device manufacturing.
Long Tool Life
High-temperature molds made from hardened steel can last hundreds of thousands of cycles.
Common Applications
LSR injection molded parts are widely used in:
Medical Devices : Catheters, seals, valves, respiratory masks
Consumer Goods : Baby bottle nipples, kitchenware handles, wearable tech components
Automotive Industry : Seals, gaskets, sensor housings, LED lighting covers
Electronics : Keyboards, connectors, shock absorbers
Pharmaceuticals : Drug delivery device components, syringe stoppers
Each application benefits from LSR’s unique combination of flexibility, resilience, and safety.
As industries continue to demand higher performance, cleaner production, and safer materials, LSR injection molding machines have become essential tools in modern manufacturing. Their ability to produce high-quality, repeatable parts from a versatile and reliable material ensures they will remain at the forefront of innovation — especially in sectors where precision and product safety are non-negotiable.
Whether you're entering the world of silicone molding or upgrading your current production line, investing in an LSR injection molding solution could be the key to unlocking new levels of efficiency and product excellence.