How to Select the Right Depalletizer for Your Bottling Line

Views: 1630 Author: Howie SUN Publish Time:
The conveyor touches every bottle on the line, so guide rail gaps and transfer heights decide real uptime more than the filler rating does.
Key facts at a glance
ScopeAir conveyor, roller conveyor, depalletizer, palletizer
FunctionMove bottles and cases without damage, stack outbound pallets
Key controlAccumulation pressure, guide rail gap, pattern repeatability
TypesSemi-automatic and automatic palletizing
Key decisionManual, semi-automatic or robotic palletizing
AutomationManual, semi-automatic or robotic

What actually decides the shortlist?

Four inputs fix the shortlist: the product, the package, the daily demand and the number of formats per week. Everything else, including the brand of the PLC, is a detail that can be settled after those four are written down.

Why does the conveyor decide how well the line runs?

The conveyor is the only part of the line that touches every bottle. Guide rail gaps, transfer plate height and accumulation pressure decide whether bottles jam, scuff or fall. Most unexplained short stops on a mature line trace back to a transfer that was set for one bottle format and never re-set.

FunctionManualAutomatic
Depalletizing empty bottlesRack or hand stackLayer depalletizer
Case palletizingOperator with pattern sheetLayer or robotic palletizer
Pallet wrappingHand wrapperIn-line stretch wrapper
AccumulationNone, line stops togetherBuffer sized to longest stop

Reference unit for this duty: the Depalletizing & Palletizing.

How much accumulation does a line need?

Enough to cover the longest normal stop downstream without stopping the filler, and no more. Extra accumulation hides a problem instead of solving it, and it adds floor space plus a place for bottles to sit and collect dust. The buffer size is a calculation, not a default.

Reference unit for this duty: the Conveying.

What does a palletizer need from the building?

Floor loading for a full pallet stack, clear height for the mast or robot envelope, and a pallet dispenser within reach of the operator. These are building decisions taken before the machine is ordered, and changing them later costs more than the palletizer.

The same question is worked through from another angle in How to Maintain Conveyor Belts in Beverage Plants.

How to read the numbers. The BPH figures quoted are reference ranges on the product specification. Pattern changes and conveyor stops sit outside the rated figure, so plan on 0.65-0.85 of line speed.

Frequently asked questions

How many cases per hour can a palletizer handle?

It is rated in cases or layers per hour and must exceed the packer output with margin. The number to compare is the pattern-adjusted rate, not the headline figure at one layer size.

Is a robotic palletizer better than a layer palletizer?

A robot is more flexible across patterns and gentler on the pack; a layer palletizer is faster for a single stable pattern. The choice follows the pattern mix, not the technology.

How many pallets per hour does an automatic palletizer handle?

It is rated in cycles per hour and depends on the layer pattern and the stack height. Compare the pattern-adjusted rate, not the headline figure.

When is a semi-automatic palletizer the right choice?

When the pattern is stable and the labour is available at the end of the line. It costs less and runs slower, and it needs an operator for every layer change.

Key takeaways
  1. The conveyor touches every bottle, so it decides the real uptime.
  2. Accumulation should cover a normal stop, not hide a chronic one.
  3. Guide rail gap is a per-format setting, not an installation setting.
  4. Compare the pattern-adjusted palletizer rate, not the headline.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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