Liquid silicone (LSR)

Liquid silicone processing

Liquid silicone is processed in 2-component form and is not ready-mixed and chemically activated until shortly before molding.
The injection molding process has become established for this purpose.

In injection molding, the components are mixed in a fixed ratio at low pressure to form the desired shape, where they are then cured to form the finished molded part. This process is known as vulcanization.

Post-curing as with classic solid silicone (e.g. several hours at 200 °C) to drive volatile reaction products out of the workpiece is not necessary with liquid silicone (LSR).

Your workpiece made of LSR: Liquid silicone offers you these attractive advantages

LSR's outstanding properties include its high resistance to a wide range of chemicals and weathering. For example, workpieces made of liquid silicone are resistant to

  • acids, alkalis and alcohols
  • UV radiation, water, temperature fluctuations
    Resistance to fuels and organic solvents is limited. For more information, see our encyclopedia article on liquid silicone.

In addition to these properties, liquid silicone is particularly valued for its water-repellent effect. As a sealing material, it is ideally suited for indoor and outdoor use. Because it is made from two components, it can be placed precisely and securely even in awkward places.

Liquid silicone can be adapted as required thanks to its flexible shape

Liquid silicone is usually synthesized on the spot and shaped into the desired form. Various processes have become established for this purpose, some of which complement each other:

  • Injection molding
  • Vulcanization
  • Annealing
    In injection molding, the components are brought into the desired shape in a fixed mixing ratio at low pressure, where they subsequently cure to form the finished molded part. This process is known as vulcanization.

Annealing is the term used to describe the thermal post-treatment of some LSR. In this process, injection molded parts are dried at temperatures of about 200 °C and volatile reaction products are expelled from the part.

LSR can be further adapted and molded for specific uses.

Due to its reliable properties, LSR is particularly suitable for applications in medical technology and the food industry

Like all silicons, LSR is food-safe and hygienically harmless. This makes liquid silicone an ideal material for the beverage and food industry, as well as for medical technology products.

Due to its robustness and elasticity, liquid silicone is suitable for the production of hose connections that are harmless to health and easy to clean. Wide-lumen hoses are used particularly in the food industry. English-lumen hoses are suitable for infusion bags or blood donor needles.

In the medical sector, LSR is used to manufacture insulin pumps or inhalation devices.

Benefit from our many years of experience in the use of LSR.

At Sattler SCM, we combine many years of expert knowledge with state-of-the-art know-how in the development, production and processing of high-quality silicones. Our experts will be happy to assist you with any questions you may have about LSR. From the initial planning of your project to the finished molded part made of liquid silicone, we will be happy to advise you in all matters. Get in touch with us. A phone call or a message is all it takes.

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