Automatic Two Head Onion Skin Tube Filling & Sealing Machine
High-Precision Packaging for Biological Indicators
The Harsiddh Automatic Two Head Onion Skin Tube Filling & Sealing Machine (Model HFS-4 OST) is an advanced solution engineered for the high-precision processing of specialized glassware. Primarily utilized in the pharmaceutical and veterinary sectors for packaging biological indicators and crushable glass ampoules, this machine offers a monoblock design that handles volumes from 0.5ml to 5ml with extreme volumetric accuracy.
Operational Efficiency & Process Flow
Operating on the proven volumetric piston pump principle, this machine doubles the output of single-head models, delivering 60 to 90 tubes per minute. Its compact, vibration-free structure is designed for seamless integration into sterile production environments.
Sequence of Operation:
- Automated Feeding: Tubes are loaded and indexed via a synchronized star wheel system.
- Nitrogen Flushing: Pre-filling purging clears the container of oxygen.
- Dual-Head Filling: Two precision heads simultaneously dispense the liquid dose with +/- 1% accuracy.
- Heating & Sealing: After post-filling gassing, tubes pass through a pre-heating station and are hermetically sealed using an LPG/Oxygen mixture.
- Clean Discharge: Sealed tubes are collected in a vertical tray, while glass waste is captured in an SS tip collector.
Technical Specification
| Specification | Details (Model: HFS-4 OST) |
|---|---|
| Number of Heads | Two (Filling & Sealing) |
| Compatible Glassware | OST / Crushable Ampoules / Biological Indicators |
| Tube Size Range | Dia. 6mm to 15mm | Length 55mm to 100mm |
| Production Output | 60 to 90 Tubes / Minute |
| Filling Capacity | 0.5ml to 5ml (Single Dose) |
| Filling Accuracy | +/- 1% |
| Gases Required | LPG & Oxygen (for Sealing) |
| Power Requirements | 1 H.P., 3-Phase or 1-Phase Options |
Frequently Asked Questions
What is the production capacity of the Two Head Onion Skin Tube model?
The Two Head configuration is an ideal solution for pilot plants, specialized diagnostic labs, and small-batch production. Depending on the tube diameter and the viscosity of the liquid, this machine can achieve a consistent output of 30 to 50 tubes per minute (approximately 1,800 to 3,000 per hour). It provides a professional level of automation while remaining compact enough for smaller facilities.
How does the machine prevent breakage during the transport and filling process?
To protect the fragile glass, the Harsiddh Two Head machine utilizes a Synchronized Walking Beam Transport System. The tubes are cradled in custom-contoured grippers made of medical-grade engineering plastics. This horizontal transport mechanism ensures that the tubes move smoothly through the nitrogen flushing, filling, and sealing stations with virtually zero mechanical stress.
How is the sealing process managed for such thin glass?
The machine employs a high-precision Oxygen-LPG Flame Sealing system. Because onion skin glass has a very low thermal mass, it melts almost instantly. The machine's PLC interface allows for micro-adjustments of the flame intensity and exposure time. This ensures a perfect, hermetic "tip seal" or "dome seal" is created without overheating the sensitive chemical reagents inside or charring the glass.
What are the key cGMP and construction features of this machine?
Even in its two-head configuration, 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 two high-precision volumetric syringes or peristaltic pumps, providing a filling accuracy of ±1%.
Cleanroom Ready: The slim-line design is optimized for placement under a Laminar Air Flow (LAF) unit to maintain a sterile environment.
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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