Glass Converting

Glass Cartridge Forming Lines

Thanks to its consolidated experience in glass forming technologies, Stevanato Group develops easy-to-use machines that offer high-speed production, fewer rejects, and mechanically resistant, cosmetic-compliant cartridges and dual-chamber cartridges. Our glass cartridge lines are engineered to manage every stage of the production process, from glass tube feeding and forming to transport, annealing, and packing. As global leaders, our end-to-end control supports the high precision and reliability required for pen cartridges to help customers identify the most suitable configuration.

Label	GS24/2	GS24/2 Tandem Line	GS36/3
Best application	high-speed double-exit cartridge forming machine, suitable for low-mid volume production	Composed of two high-speed double-exit cartridge forming machine	high-speed triple-exit cartridge forming machine for large batches and high throughput volumes
Cartridge range	from 1ml to 5ml	from 1ml to 5ml	from 1ml to 5ml
Cartridges per cycle	2	2 x 2 machines	3
Max mechanical Speed	46 index movements/minute (theoretical speed 92 pcs/minute)	46 index movements/minute (theoretical speed 184 pcs/minute)	48 index movements/minute (theoretical speed 144 pcs/minute)
No. of chucks	24 upper chucks for neck forming and 20 lower chucks for bottom forming (10 on each side)	24 upper chucks for neck forming and 20 lower chucks for bottom forming (10 on each side)	36 upper chucks for neck forming and 30 lower chucks for bottom forming

Optimal mechanical durability achieved through robust design and an extremely detailed and accurate assembly process
Proven in-house equipment design, with constant monitoring of critical parameters capable of influencing forming precision
High mechanical precision with automated feedback controls and easy-to-use HMIs ensure seamless high-speed production, fewer rejects, and superior mechanical properties
Satisfying the needs of the most demanding requirements of mechanical resistance, cosmetic appearance and dimensional standards

See our cartridge forming lines in action

Watch how the GS36/3 supports high-speed cartridge manufacturing with reliable forming, precise handling, and consistent process control.

1. Tube loading

2. Dimensional controls

3. After-forming line

4. Annealing oven

5. Cosmetic controls

6. Packing machine

Module	Description
1. TUBE LOADERS	continuous-feeding glass tube loaders ensure efficient feeding of glass tubes with limited operator intervention.
2. DIMENSIONAL AND COSMETIC CONTROLS	100% inline controls help verify cartridge dimensions and cosmetic quality throughout the forming process.
3. AFTER FORMING HANDLING SYSTEM	gentle cartridge handling toward the annealing oven helps preserve cosmetic quality and mechanical resistance.
4. ANNEALING OVENS	designed to provide an optimal thermal profile, supporting cartridge strength, process stability, and operator safety.
5. AUTOMATIC PACKING MACHINES	the system automatically picks formed cartridges and places them into trays or blisters, supporting efficient downstream handling