A Deep Dive into Ointment Tube Filling Machines

Think about the last tube of cream you squeezed. Skincare, medicated ointment, maybe some kind of industrial paste — the format is so familiar it barely registers. And yet getting a thick, viscous product into that little collapsible tube, at scale, without mess or waste, turns out to be a genuinely interesting engineering problem. That’s what ointment tube filling machines are built to solve.

What Is An Automatic Ointment Tube Filling Machine?

The ointment tube filling machine can feed tubes into molds, dispense a precise amount of materials into tubes, and then seal the tube ends. The whole sequence happens in one unit.

The tricky part is the material itself. Ointments don’t flow like water. They’re thick, sometimes temperature-sensitive, and in pharmaceutical contexts, any contamination is a serious problem — not just a quality issue. Manufacturers fully consider these factors when designing the ointment tube filling machines. They are usually designed with hygienic contact surfaces, controlled filling environments, and minimal air exposure.

What Are The Types of Ointment Tube Filling Machines?

Based on your production volume and product characteristics, ointment tube filling machines can generally be categorized into three main types:

1. Manual/Semi-Automatic Machines

The operator loads and positions each tube in the holder by hand. Then the machine starts filling materials into each tube. Sealing and crimping may or may not be automated depending on the model; some require a separate lever or a second manual step. Slower, obviously. But low cost, easy to retool, and more than sufficient for lab work, small-batch runs, or early-stage R&D where flexibility matters more than throughput.

2. Rotary Automatic Machines:

Tubes ride a rotating carousel through a fixed sequence of stations: filling, sealing, tail trimming, ejection. No manual handoff between steps. This is the configuration most commercial manufacturers land on. It is because the rotary machine balances output, footprint, and operational complexity in a way that works across a wide range of production scales.

3. Linear Machines:

Here the tubes travel in parallel rows down a straight conveyor, with filling and sealing happening across multiple lanes at once. The throughput ceiling is higher than rotary. Primarily used in large-scale industrial operations where volume is the dominant variable and the line is built around a single product or product family.

How Does An Ointment Tube Filling Machine Work?

1. Tube Loading: Empty tubes are placed into a hopper or entry chute. From there, a mechanical arm or vacuum pickup pulls them out and dispenses them into the holder molds on the carousel.

2. Tube Orientation (Photoelectric Registration): Before filling starts, a photoelectric sensor reads the registration mark on the tube. It will make the tube rotated so the design faces the exact right direction before sealing.

3. Tube Filling: The filling nozzle descends to the bottom of the tube. Then it dispenses materials from the bottom up to avoid air bubbles from getting trapped inside.

4. Sealing And Coding: For plastic tubes, the ends will be sealed by ultrasonic system or hot system. For aluminum tubes: the ends will be folded and crimped mechanically. After sealing or folding, the machine will stamp expiration date or batch number onto the sealed edge.

5. Trimming And Ejection: Any excess plastic from the seal will be cleanly trimmed off. Then the finished products will be ejected onto a discharge conveyor, and be transported to next packaging process.

Recommended ZONESUN Ointment Tube Filling Machines:

ZS-FS006U Linear Automatic Plastic Tube Filling Sealing Machine – Can complete tube feeding, filling, sealing and trimming on a straight conveyor. The machine is made in compact design, which is good for saving working space. Built with piston filling system, the machine can fill viscous products like creams, toothpastes, gels.

ZS-FS009A Rotary Automatic Aluminum Tube Filling Sealing Machine – As a rotary machine, it features functions of feeding, filling, folding and crimping aluminum tubes. The hopper is built with heating and mixing device, good for handling materials smoothly. It can also work with cartoning machine to realize automated production.

ZS-FS160 High Speed Automatic Tube Filling And Sealing Machine – Can reach at high output of 110-120 tubes/min. It can be customized to seal plastic or aluminum tubes. This widens its scope of application. The material contact parts of this machine are crafted from stainless steel, which ensures sanitary standards..

What Are Distinct Characteristics of Ointment Tube Filling Machines?

1. No-tube, no-fill

A sensor checks each holder cup before the pump does anything. Empty cup—no dispense. It’s a simple interlock, but without it, product ends up on the machine instead of in a tube. Messy to clean, wasteful, and at scale, the losses add up faster than expected.

2. Tail Cutting

Ointments string. That’s just the nature of viscous material—pull a nozzle away from a thick paste and it doesn’t break cleanly on its own. So there’s a cut-off or blow-off mechanism built into the nozzle tip, designed to sever the product at the moment filling stops. The alternative is a thin strand of ointment draped across the tube opening, which causes its own downstream problems.

3. Wide Product Compatibility

The tube molds of ointment tube filling machines can be customized or changed. This enables it to fit multiple tube sizes.

Conclusion

A tube filling machine serves as the backbone for manufacturing semi-viscous products. It can be widely used for cosmetic creams, food pastes, topical ointments, industrial paints, and so on. To choose a right setup, you must consider the factors including throughput demands, tube materials and automation level. Are you picking a suitable ointment filling machine? Come and contact ZONESUN PACKAGING. We can help to design an tube packaging machine to match with your business.