How to Choose the Right Conveyor System for Your Bottling Line

Views: 2100 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
Supply 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 Conveying.

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.

Site requirements, air and power consumption sit with the Depalletizing & Palletizing.

How much accumulation is enough?

Enough to cover the longest normal downstream stop without stopping the filler. Beyond that, accumulation only hides the problem and adds floor space. The number comes from the stop-time log, not from a rule of thumb.

The same question is worked through from another angle in A Guide to Depalletizers and Palletizers: Automating Line Start.

How to read the numbers. Capacity figures are the reference ranges on the product specification. A rated pallet rate assumes one pattern and one layer; changeover sits outside it, so size on 0.65-0.85 of line speed.

Frequently asked questions

What is the difference between a depalletizer and a palletizer?

A depalletizer unloads empty bottles or full cases from a pallet at the start of a line. A palletizer stacks finished cases onto a pallet at the end. They are separate machines with separate footprints.

Why do bottles jam at conveyor transfers?

Guide rail gap and transfer plate height. Both are set for one bottle diameter and both drift when a second format is introduced. Re-set them at every changeover, not once at installation.

Why does a depalletizer drop layers?

Low air pressure, a worn layer clamp, or a pallet that is not square. Empty bottle layers are light, so small errors become fallen bottles at the infeed.

What conveyor speed should a line use?

It follows the filler rate with margin for accumulation, not the maximum the conveyor can carry. Running a conveyor faster than the line needs increases scuffing and jam severity.

Key takeaways
  1. The conveyor touches every bottle, so it decides the real uptime.
  2. Guide rail gap is a per-format setting, not an installation setting.
  3. Compare the pattern-adjusted palletizer rate, not the headline.
  4. Empty-bottle layers punish a badly squared pallet.
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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