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The Comprehensive Guide to Liquid Silicone Rubber (LSR) Injection Molding Process

By 2.3 min readPublished On: May 30th, 2023Last Updated: May 30th, 2023Categories: Silicone industry knowledge


Understanding Liquid Silicone Rubber (LSR) Injection Molding: A Brief Overview

Liquid Silicone Rubber (LSR) Injection Molding is a versatile and efficient process used in various industries due to the superior properties and advantages of LSR. This guide will help you navigate this innovative field with a closer look at LSR, its applications, and the nuances of its injection molding process.

The Liquid Silicone Rubber (LSR): A Closer Look

What is Liquid Silicone Rubber (LSR)? 

LSR is a two-part, platinum-cured silicone rubber with remarkable thermal, chemical, and electrical resistance. It’s renowned for maintaining its properties over a wide range of temperatures.

Properties and Advantages of LSR 

LSR exhibits several advantages over conventional materials, including extreme temperature resistance, flexibility, durability, and biocompatibility. This makes it ideal for a wide range of applications.

Applications of LSR in Various Industries 

From the automotive industry to medical devices, and consumer electronics, LSR’s wide-ranging applications underline its versatility and superior characteristics.

Unveiling the LSR Injection Molding Process

Components of the LSR Injection Molding Machine 

Injection Unit 

The injection unit primarily ensures precise and homogeneous heating of the LSR before its injection into the mold.

Clamping Unit 

The clamping unit holds the two halves of the mold in place during the injection and curing phases.

The Step-by-Step LSR Injection Molding Process 

Material Preparation 

The two LSR components are combined, mixed, and heated to the appropriate temperature in the injection unit.

Injection of the LSR 

The LSR mixture is injected into the mold, where it begins to cool and solidify.

Curing and Ejection of the Molded Part 

Once sufficiently cured, the part is ejected from the mold, and the process is ready to begin anew.

Benefits of the LSR Injection Molding Process

Efficiency and Precision 

LSR Injection Molding offers high-volume production capability, precise detail replication, and exceptional part quality.

Flexibility and Scalability 

The process can be easily scaled and adjusted to meet various production needs, offering manufacturers high flexibility.


Embracing the Future with LSR Injection Molding

The versatile, efficient, and scalable nature of LSR Injection Molding makes it a future-proof solution in a rapidly evolving manufacturing landscape. By leveraging this process, businesses can stay competitive and innovative.

Take Your Production to the Next Level with LSR Injection Molding

Investing in LSR Injection Molding could be the transformative step your production needs. Discover the benefits and versatility of this remarkable process today.


What is LSR?

  1. LSR is a two-part, platinum-cured silicone rubber known for its superior properties and versatility.

What are some applications of LSR?

  1. LSR is used in various industries like automotive, medical devices, and consumer electronics.

What are the benefits of LSR Injection Molding?

  1. LSR Injection Molding offers efficiency, precision, flexibility, and scalability in manufacturing.