Automatic Single Head Onion Skin Tube Filling & Sealing Machine
High-Precision Filling for Specialized Glassware
The Harsiddh Automatic Single Head Onion Skin Tube Filling & Sealing Machine (Model HFS-30 OST) is a pioneer solution in India for the packaging of biological indicators and crushable glass ampoules. Primarily used in the pharmaceutical, veterinary, and agro-insecticide industries, this machine is designed to handle delicate glass tubes with diameters ranging from 6mm to 15mm. It provides a seamless monobloc operation that replaces traditional feeding methods with a stable, breakage-preventing rectangular system.
Operational Precision & Process Flow
Operating on the proven Angle Travel Principle, the machine ensures that every tube is processed with extreme care, accounting for variations in neck dimensions and glass quality.
Sequence of Operation:
- Feeding: Specialized glassware is fed via a synchronized star wheel into the eccentric rack.
- Purging: Pre-filling nitrogen flushing clears the interior of oxygen.
- Volumetric Filling: A single precision head discharges the liquid dose (0.5ml to 25ml) using a high-accuracy volumetric piston pump.
- Sealing: After post-filling nitrogen purging, the tube passes through a pre-heating station and is hermetically sealed using a precise mixture of LPG and Oxygen.
- Discharge: Finished tubes are diverted into a “sleepy tray” (collection unit) for safe, touch-free retrieval.
Versatility for Technical Applications
The HFS-30 OST is the preferred choice for R&D laboratories and chemical manufacturers requiring high flexibility and minimal changeover time between different tube sizes. Whether you are packaging agro-chemicals or sterile biological indicators, this machine delivers the performance and durability required for high-stakes technical manufacturing.
Technical Specification
| Specification | Details |
|---|---|
| Number of Heads | Single Head (Filling & Sealing) |
| Compatible Glassware | Onion Skin Tubes / Crushable Ampoules |
| Tube Size Range | Dia. 6mm to 15mm | Length 55mm to 100mm |
| Production Output | 10 to 15 Tubes / Minute |
| Filling Capacity | 0.5ml to 25ml in Single Dose |
| Filling Accuracy | +/- 1% |
| Gases Required | LPG & Oxygen (for Opening & Sealing) |
| Power Requirements | 0.5 H.P., 3-Phase or 1-Phase Options |
| Overall Dimensions | 750mm (L) x 500mm (W) x 1000mm (H) |
Frequently Asked Questions
What is the production capacity of the Single Head model?
The Single Head configuration is specifically designed for R&D laboratories, pharmaceutical colleges, and pilot-scale production. It typically achieves a consistent output of 20 to 30 tubes per minute (approximately 1,200 to 1,800 per hour). It provides the same precision as high-speed industrial lines but in a compact, manageable footprint.
How does the machine handle such fragile glass without cracking it?
To minimize mechanical stress, the Harsiddh Single Head machine utilizes a Synchronized Walking Beam Transport System equipped with custom-contoured grippers made of medical-grade engineering plastics. This ensures the tubes are cradled securely but gently as they move through the nitrogen flushing, filling, and flame-sealing stations.
How is the sealing process managed for such thin glass?
The machine employs a precision Oxygen-LPG Flame Sealing system. Because onion skin glass melts very quickly, the flame intensity and exposure time are finely calibrated via the PLC interface. This allows for a perfect "tip seal" or "dome seal" that is hermetic and aesthetic, without overheating the sensitive chemical reagents inside the tube.
What are the key cGMP and construction features of this machine?
Despite its smaller size, this machine is built to the highest cGMP industrial standards:
Material Integrity: All liquid contact parts are made of SS 316L, while the exterior frame is polished SS 304 stainless steel.
Dosing Accuracy: Equipped with a high-precision volumetric syringe or peristaltic pump, providing an accuracy of ±1%.
Cleanroom Ready: The slim, linear design is optimized for placement under a Laminar Air Flow (LAF) unit to maintain a sterile environment during the filling process.
Safety: Includes a "No Tube – No Fill" sensor to prevent liquid wastage and an integrated safety shield to protect the operator from the sealing flames.
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