Labeling tube packaging (such as ointments, cosmetics, and laboratory products) is a very important step in the production line. Small tubes and irregular-shaped packaging can make labeling challenging. Therefore, there are many details to watch out for during tube labeling. A standardized workflow or professional equipment can make labeling much more efficient.

Why Tube Labels Matter

Labels carry essential information—such as usage instructions and ingredients—and also serve as the “face” of your product. They influence brand image and user safety. In industries such as pharmaceuticals, cosmetics, and food, accurate label placement is strictly regulated. A labeling machine helps ensure speed and precision, reduces human error, and keeps every product neat, accurate, and compliant.

Preparations Before Labeling

Prepare the Tube Itself

• Before labeling, wipe the tube clean. Any dust or oil can cause crooked or poorly adhered labels.
• Check whether the tube is deformed or improperly aligned, as this affects labeling accuracy.

“Calibrate” the Machine

• Adjust the guide rods and feeding mechanism according to the tube’s diameter and length.
• Check the tension of the label roll. If it is too tight or too loose, the label may wrinkle or apply unevenly.

Check Feeding and Positioning

• Tubes can be placed manually or fed automatically via a conveyor (depending on whether your machine is semi-automatic or fully automatic). Ensure smooth feeding without jamming.
• Confirm that the labeling head is positioned correctly so the label is applied precisely where it should be.

Tube Labeling Workflow

Once your tube labeling machine is properly set up and adjusted, the labeling process can begin. The workflow typically includes the following steps:

1. Feeding

Tubes enter the labeling station one by one, either manually or through the conveyor.

2. Labeling

• The machine applies pressure-sensitive or hot-melt labels (depending on the label type).
• As the tube moves, the label is wrapped around it steadily and accurately positioned.

3. Quality Inspection (Very Important!)

• Many machines come with “eagle-eye” features such as cameras or sensors to detect skewed labels, unclear printing, or misplacement.
• Some advanced machines can even automatically reject defective products.

4. Curing and Drying

If you're using special label materials that require heat or UV for proper adhesion, there may be an additional curing or drying step to ensure firm bonding.

Common Troubleshooting

Crooked Labels

• This is usually caused by improper calibration or misaligned tube placement. Recheck the settings and ensure the tubes are fed correctly.
• If needed, slightly adjust the angle of the labeling head.

Labels Getting Stuck

• A misaligned label roll or overly sticky adhesive may cause jamming. Regularly check label roll installation and machine tension settings.
• If a jam occurs, stop the machine and carefully remove the stuck labels or debris.

Poor Print Quality

• If the printed text is blurry or incomplete, the print head may be clogged, or ink/ribbon may be running low.
• Clean the print head and replace ink or ribbon as needed.

Maintaining and Cleaning the Tube Labeling Machine

Keep It Clean

• After each production run, wipe the labeling head, rollers, and conveyor to remove excess adhesive, dust, and ink to prevent buildup.
• Use appropriate cleaning agents to avoid damaging machine components.

Lubrication and Calibration

• Regularly lubricate moving parts such as feeding rollers and conveyors to reduce wear.
• Recalibrate the machine periodically to maintain labeling accuracy.

Replace Worn Parts

Belts, rollers, and other consumable parts should be replaced when worn to maintain high efficiency and precision.

Conclusion

By understanding the tube labeling workflow, machine operation, troubleshooting, and regular maintenance, you can ensure your tube labeling machine runs smoothly and efficiently. This not only reduces downtime but also improves overall label quality, ensures compliance, and strengthens your brand image.

Interested in learning more about tube labeling machines? Contact us to explore our solutions.