LSR silicone is one of the most versatile materials in modern plastics and elastomer processing. Thanks to its high temperature resistance, flexibility, and chemical durability, liquid silicone is used in numerous industrial and medical applications.
What are the key characteristics of liquid silicone (LSR)?
Liquid silicone (LSR) is a flexible, chemical- and temperature-resistant material that is mixed from two components in a 1:1 ratio and cured through heating.
How do the properties of LSR and HTV/HCR silicone differ?
LSR is ideal for automated injection molding processes and complex components, while HTV/HCR is solid and stands out primarily through its high mechanical load capacity.
How is liquid silicone (LSR) processed?
Liquid silicone (LSR) is mixed from two components, processed through injection molding, and cured through vulcanization, optionally followed by post-curing at approximately 200 °C.
What advantages does liquid silicone (LSR) offer in industrial applications?
Liquid silicone (LSR) offers high precision and process reliability in series production, enables complex components, and reduces assembly effort.
In which areas is LSR typically used?
LSR is used primarily in the automotive industry, medical technology, electronics and electrical engineering, in household and consumer goods, as well as in the food industry.
Liquid silicone, also known as LSR (Liquid Silicone Rubber), is an elastic material with mechanical and physical properties similar to classic silicone rubbers.
This combination of durability and processability makes LSR the basis for high-precision injection-molded silicone components and the starting point for advanced material platforms.
LSR and HTV/HCR silicones differ primarily in their processing, material structure, and respective areas of application. While LSR is particularly suited for automated production processes and complex molded parts, HTV and HCR silicones stand out through their high mechanical load capacity and versatile industrial application possibilities as well as in the extrusion process.
Two-component mixture directly in the machine with low viscosity
Solid material composition, suitable for compression, transfer, and extrusion processes
Stable material properties across a wide temperature range
High tear resistance and lasting mechanical stability
Particularly suited for the mass production of complex geometries
Versatile use in industry, automotive manufacturing, and electrical insulation
High dimensional stability and precise reproducibility
Robust material for demanding technical applications
LSR (Liquid Silicone Rubber)
Two-component mixture directly in the machine with low viscosity
Stable material properties across a wide temperature range
Particularly suited for the mass production of complex geometries
High dimensional stability and precise reproducibility
HTV/HCR Silicone
Solid material composition, suitable for compression, transfer, and extrusion processes
High tear resistance and lasting mechanical stability
Versatile use in industry, automotive manufacturing, and electrical insulation
Robust material for demanding technical applications
Liquid silicone is mixed during processing and subsequently cured. Various methods are used for this purpose, which are often combined with one another. One significant method is injection molding, that is, casting under pressure into a mold.
Mixing the Components:
Liquid silicone consists of two components that are mixed together in a precise, fixed ratio before processing.
2.
Injection into the Mold (Injection Molding):
The mixed material is injected under low pressure into a specially prepared mold.
3.
Shaping and Vulcanization:
The silicone cures inside the mold. This chemical process is referred to as vulcanization and gives the component its final shape and stability.
4.
Demolding the Component:
After curing, the finished silicone part is removed from the mold.
5.
Thermal Post-Treatment (Tempering, optional):
If required, the parts are post-treated. This removes volatile residues and improves the material properties.
6.
Further Customization and Processing: Depending on the area of application, the component can subsequently be further processed or specifically adapted.
Liquid silicone excels in industrial series production through precision, efficiency, and high material durability. It is particularly suitable for demanding technical applications and enables the economical production of high-quality components.
LSR is used wherever components must function precisely, durably, and reliably.
Sustainability is becoming increasingly important in LSR injection molding. The focus here is on the careful use of resources as well as the reduction of production waste. Both the recycling of material residues and the high biocompatibility of silicone play an important role in this.
The processing of Liquid Silicone Rubber (LSR) offers many advantages, but is also associated with some challenges. In particular, technical requirements as well as material costs can affect the efficiency and economic viability of production.
LSR stands for “Liquid Silicone Rubber” and refers to a liquid silicone rubber that is mainly processed using injection molding. The material consists of two components that only cure during processing. LSR is particularly elastic, temperature-resistant, and durable. Due to its precise processability, it is frequently used in the automotive industry, medical technology, and electronics.
The biggest difference lies in the processing and consistency of the materials. LSR is liquid and is processed automatically through injection molding, while HTV is a solid silicone compound. HTV is more suitable for simpler or larger components subject to mechanical stress, whereas LSR is suited for intricate geometries and high quantities. Both materials are temperature-resistant and durable but are used differently depending on the application.
LSR stands for “Liquid Silicone Rubber,” i.e., liquid silicone rubber. The material was developed specifically for industrial series production and is predominantly processed through injection molding. LSR enables the precise manufacturing of complex components and stands out through its high flexibility and durability. For this reason, it is used in many technical and medical applications.
LSR is designed for a wide temperature range and remains elastic even under extreme conditions. Depending on the material, liquid silicone permanently withstands temperatures of approximately −50 °C to +180 °C. Higher temperatures are also possible for short periods. This makes LSR ideal for applications with high thermal loads.
LSR offers modern solutions for the efficient series production of complex components. Through the excellent automatability of the injection molding process, high process reliability is achieved. Especially in demanding and precise applications, LSR provides economic advantages through stable and short cycle times. This makes the material ideal for industrial high-performance production.
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