Siliconization Line - Stevanato Group
search img


Silicone in the form of emulsions and/or oil is a lubricant that favours and improves the glideability of systems such as cartridges and syringes, while for vials – due to its hydrophobic properties – the silicone coating ensures a higher restitution rate down to the last drop of product.

Moreover, the silicone layer minimises the interactions between the product and the glass container, and prevents certain products from sticking to the internal surface, making the glass appear perfectly transparent.

As a critical parameter for container performance, siliconization must be optimized and monitored to ensure the integrity of the pharmaceutical product and, therefore, the safety of the patient.

Siliconization is a complex process that requires extremely precise automation. Spami siliconization lines are designed to:

  • Increase gliding performance between the glass and the internal components (e.g. rubber parts);
  • Improve the flow of liquid solutions inside the container, reducing “dead volume” concerns;
  • Reduce the interactions between the pharmaceuticals and the glass containers;
  • The most common sprayed materials: silicon emulsion or silicon oil.
Glass processing - Siliconization - Silic line 1


In order to optimize control of the process and its reliability, Stevanato Group – through Spami’s know-how – has designed a siliconization line featuring:

  • Pre-heating with electrical heating system;
  • Independent delivery system for each spray nozzle;
  • Volumetric pumps for silicone dosing accuracy;
  • Silicone spray nozzle and air flows to uniformly spread the silicone along the internal surface of the glass product;
  • Baking lehr with electrical or gas heating system.
    The baking lehr can be installed on the siliconization line or be an independent unit, depending on the type of silicone used.

The process and the equipment can be adapted to the specific coating material and specifications of the final products.


Glass processing - glass tubing loader - last
Glass Tube Loader

An automatic tube loader that allows for automatically feeding the vertical rotating machines with glass tubing

Vials Forming Lines

Vial forming lines capable of increasing production, reducing maintenance, improving efficiency and simplifying cleaning activities

Cartridge forming line
Cartridges Forming Lines

Seamless high-speed machines ensuring resistant and cosmetic-compliant cartridges from 1 ml to 5 ml

glass syringe forming line
Syringes Forming Lines

Syringe forming lines designed and built to produce syringes with optimal cosmetic, chemical and physical performance to preserve drug integrity and guarantee the safety of patients.

Glass Processing - Afterforming 2
Afterforming Lines

A gentle handling of the glass container during the forming process and the afterforming phase ensures premium-quality glass containers

に興味がある ?


logo stevanato group
linkedin facebook