How do I change a labeller between sizes of rectangular bottle?
Record guides, product sensor, label head position, peel plate, wrap or wipe unit, speeds and recipe values against physical datum marks. Verify the first and final label positions before releasing production.
What should I check first?
Record the machine state and the finished result before changing settings. This helps identify where control is first being lost.
- Confirm the label area on the rectangular bottle: a pack with broad front/back faces and narrow side panels.
- Inspect the web path and front-and-back labelling with controlled orientation.
- Mark a fixed position reference and record the direction of error.
- Verify label width, length, core, roll direction, gap, backing and maximum roll diameter.
- Run the smallest, largest and least stable container at normal production speed.
- Clean and align product and label sensors, then record their status during the fault.
Why is this production problem happening?
Work from the evidence and change one variable at a time. These are the most relevant causes to investigate first.
- The product is not controlled consistently at the application point.
- Web tension, tracking or gap detection changes during the roll.
- Surface or adhesive conditions are outside the approved range.
- The container is not held to a repeatable datum.
- Label and adhesive are unsuitable for the surface, curvature or temperature.
- Web tension or tracking changes as the roll diameter falls.
How can I correct or improve it?
Make a controlled change, repeat the same measurement and compare the result before moving to the next adjustment.
- Stabilise product spacing and orientation.
- Set the peel, wipe and speed relationship with production labels.
- Run a sustained test and record position results.
- Improve product spacing, orientation and side or top control.
- Prove label materials on production containers and environmental conditions.
- Set the applicator mechanically before fine timing adjustments.
What should I send Lancing?
The most reliable recommendation is based on representative production materials and a measurable acceptance result.
- Representative rectangular bottle samples
- Complete label rolls and drawings
- Position tolerance and visual acceptance criteria
- Required output and roll-change pattern
- Video of the current application
- Container drawings, photos and material
- Label specification, roll dimensions and roll direction
Which applications does this answer cover?
More quick answers about this problem
What should I check first for rectangular bottle?+
Confirm the label area on the rectangular bottle: a pack with broad front/back faces and narrow side panels.
Why does this problem happen with rectangular bottle?+
The product is not controlled consistently at the application point.
How can I improve or correct the problem with rectangular bottle?+
Stabilise product spacing and orientation.
Which part of the production line does this question relate to?+
This question relates primarily to labelling & print-and-apply. It may also be affected by upstream product or pack supply and by downstream handling, so check the full production sequence rather than one machine in isolation.
What should I send when asking for a machinery recommendation?+
Send Representative rectangular bottle samples; Complete label rolls and drawings; Position tolerance and visual acceptance criteria; Required output and roll-change pattern. Representative production samples and a measurable acceptance target are normally more useful than a catalogue description alone.
Explore the relevant Lancing machinery options
Review suitable equipment and application guidance, then request a recommendation based on your product, pack and required accepted output.
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