Glass Converting

High-Precision Syringe Manufacturing Lines

Glass syringes are highly complex primary containers that demand an exceptionally precise forming process. Building upon our extensive expertise in glass converting technologies, Stevanato Group’s syringe lines integrate advanced process controls as standard to achieve absolute accuracy during the most critical manufacturing phases. By utilizing ultra-precise servomotors for cone forming and total length control, and automatic flow meters for dynamic burner regulation, our equipment ensures flawless production, allowing you to manufacture customized syringes with unparalleled dimensional consistency.

Label	GS24/16	GS36/15-2
Best application	a flexible machine suitable for the largest syringe range suitable for high-speed machines that produce small syringes	suitable for high-speed machines that produce small syringes
Syringe range	from 0.5ml to 5ml	0.5 ml, 1 ml long, 1 ml STD
Syringe per cycle	1	2
Max mechanical Speed	40 index movements	40 index movements
No. of chucks	24 upper chucks for cone forming, 16 lower chucks for flange forming	36 upper chucks for cone forming, 30 lower chucks for flange forming

Optimized production efficiency
Automation controls mitigate human error and streamline operations, ensuring high-speed output while consistently delivering premium-quality glass containers.
Uncompromised process stability
Drawing from decades of specialized design expertise, our forming lines provide stable, repeatable operations during the most critical manufacturing phases
Dimensional and cosmetic excellence
Operating with extreme mechanical precision, our systems drastically reduce reject rates. Every syringe meets the most stringent cosmetic and dimensional standards required to preserve drug integrity and enable perfect device compatibility.
Intuitive operational control
Advanced, user-friendly HMIs provide operators with seamless oversight of the entire high-speed process, empowering rapid adjustments and simplifying complex production monitoring.

See our syringe forming lines in action

Experience the advanced automation and flawless mechanical precision of Stevanato Group technology firsthand. Watch how our high-speed GS36 system manages the most critical syringe forming phases with absolute consistency.

1. Tube loader

2. Dimensional controls

3. Afterforming line

4. Annealing ovens

5. Cosmetic controls

6. Needle Assembly

7. Automatic packing machines

Stevanato Group syringe forming lines are designed as fully integrated turnkey solutions for the production of prefillable syringes, covering the process from raw glass tubing to downstream handling. The lines include forming equipment and auxiliary process systems engineered to support high precision, process control, and consistent quality.

Fully automatic washing equipment is also available to remove glass particles and help preserve cosmetic integrity, meeting the strict requirements of injectable devices.

Module	Description
1. TUBE LOADERS	continuous-feeding mechanisms designed for operational efficiency, minimizing operator intervention while maintaining a steady flow of raw glass.
2. DIMENSIONAL AND COSMETIC CONTROLS	100% inline controls rigorously verifying cone profiles, flanges, and cosmetic standards to ensure zero-defect output.
3. AFTER FORMING HANDLING SYSTEM	engineered for the gentle transport of delicate syringe bodies to the annealing phase, preserving both mechanical strength and cosmetic quality.
4. ANNEALING OVENS	advanced thermal processing designed to relieve internal glass stress after forming. They guarantee an optimal thermal profile while ensuring complete operator safety.
5. AUTOMATIC PACKING MACHINES	high-precision handling systems that automatically and securely pick and place the finished syringes into trays or blisters, readying the product for the process.
6. NEEDLE ASSEMBLY	a dedicated, highly efficient module that flawlessly integrates the needle-mounting process. Engineered for ease of use, it features an ultra-compact footprint and energy-saving technology while guaranteeing exact needle positioning.

Needle_assembly_line_Siliconization_of_needles

By leveraging precise automation, our syringe siliconization lines are engineered to deliver:

Superior glideability: dramatically increases gliding force consistency between the glass barrel and the rubber parts, ensuring a seamless injection profile.
Minimized dead volume: optimizes the flow of liquid solutions, maximizing dose delivery and reducing pharmaceutical waste.
Enhanced drug stability: forms a reliable barrier that minimizes chemical interaction between sensitive pharmaceutical formulations and the glass surface.
Material versatility: fully compatible with industry-standard lubricants, seamlessly processing both silicone emulsions and silicone oils.

An integrated electrical heating system prepares the syringe barrel surface to maximize silicone adhesion.
Independent delivery systems on each spray nozzle ensure granular coating control for every single unit.
High-precision volumetric pumps deliver the exact silicone application to prevent dangerous over-siliconization.
Specialized nozzles and calibrated air flows ensure flawless silicone distribution along the internal geometry.
Inline or stand-alone annealing lehrs provide the precise thermal treatment needed to stabilize the silicone layer.