Specifying Bottle and Pack Conveyors at Machine Interfaces

A conveyor quotation should show how each container moves between machines, where it can accumulate and what happens when the next machine stops. Belt width and motor power do not answer these questions.

Separate the handling duties

Empty PET bottles, filled bottles and shrink packs impose different support and transfer requirements. Record dimensions, weight, center of gravity and the condition of the package surface. Identify neck-supported sections separately from base-supported conveyors and show each transition on the layout.

Inspect the transfer points

Use production containers at the filler discharge, labeler infeed, merges and packer entrance. Observe base support, guide contact, gaps and acceleration. A transfer that works with a rigid trial bottle may scuff or tip a lightweight commercial bottle. Include the least stable approved format in the trial.

Size useful accumulation

Translate the downstream interruption to be absorbed into a quantity of containers at the actual production rate. Check whether the proposed buffer stores that quantity without unacceptable back pressure. Define the full-buffer response and restart sequence; extra conveyor length alone does not provide controlled accumulation.

Specify cleaning and wear parts

State the cleaning chemicals, temperature and exposure for the installed area. Match chain, belt, guide and frame materials to those conditions. Request access for debris removal, drainage and replacement of wear strips. Conveyor washdown should have its own procedure rather than be assumed covered by the product-circuit CIP system.

Test as part of the line

Run the commercial packages at the agreed rate, then demonstrate upstream starvation, downstream blockage and controlled recovery. Record jams, package damage and good output. The handover should include layout revisions, drive settings, wear-part references and the permitted package range.