Liquid injection molding

The technology

The technology Liquid Injection molding (LIM) is used to manufacture elastomer molded parts made of liquid silicone rubber (LSR). The special properties of this material make it suitable for a large number of applications, from medical technology to the food sector, to electrical engineering or mechanical engineering, or even in sanitary engineering as well as sports and leisure. This comes as no surprise, since LSR is tasteless and odorless, biocompatible, plasticizer-free, and also has excellent thermal properties.
This new technology allows us to respond to the increased demand in the market for silicone components, which means we can satisfy the needs of our customers even better
Andreas Kaiser
Geschäftsführer Greiner Assistec in St. Gallen

Complex assembly unit

Wide range of offerings

Medical Technology

Liquid silicones are tasteless and odorless, plasticizer-free, and have excellent biocompatibility. They are therefore best suited for different products in the field of medical technology, such as breathing masks, teats, hoses, or seals.

Baby care

We set the highest standards for baby products, in particular: Teats, pacifiers, teething rings, and breast pumps as well benefit from the special properties and proven quality of liquid silicones.


Toys, hinges, dampers, parts for boats and vehicles, and many more can be quickly and easily produced through liquid injection molding in top quality, and precisely in accordance with our customers' wishes. 


Razors, toothbrushes, touchpads, casings or housing parts – household appliances such as these can be customized using liquid silicone rubber that can be colored according to taste. 

Automobile Industry

Products from liquid silicones are characterized by good electrical insulating properties as well as good environmental compatibility – plugs, seals or interior elements with LSR parts are therefore ideal for the specifications of the automobile industry. 

Sanitary & Household Sector

Very good weather and aging resistance have increased the demand for showerheads, aerator applications or filters with LSR components in the sanitary and household sector. 

How liquid injection molding works

Many areas of application

Interested in liquid injection molding?

Are you looking for a manufacturer of silicone parts or you have any questions, then just get in touch with us.

Advantages of LSR

  • Temperature-resistant between -50 °C and +250 °C, while maintaining elastic properties
  • Odorless and tasteless
  • Plasticizer-free
  • Excellent biocompatibility (suitable for the food 
  • and drug industry)
  • Transparent material can be colored as desired 
  • High temperature resistance and flashpoint
  • Favorable fire behavior
  • Good electrical insulating properties
  • Very good weather and aging resistance
  • Environmentally friendly
  • The molded parts can be manufactured spruelessly and without burrs

What are silicones?

Silicones belong to the group of organosilicon compounds and are classified in the plastics groups of elastomers. Depending on the type of vulcanization and viscosity of the base polymer, a distinction is made between different grades of rubber as well as high-temperature and low-temperature vulcanization. Because of its special properties, Greiner Assistec is focusing on LSR, which belongs to the group of high-temp vulcanizing rubbers and exhibits a particularly low viscosity. LSR is a pumpable 2-component mixture and is a superb choice for processing in Injection molding processes. 

Liquid injection molding references