Loose, tilted or damaged caps should be recorded as distinct defects. The cause may involve component dimensions, cap presentation, bottle support or the capping setup. Compare evidence from accepted and defective packs before changing the machine configuration.
What should be checked about the components?
Record cap and bottle suppliers, component codes and batch identifiers. Retain unused examples from the affected batches. Compare the bottle finish, closure thread and liner condition where applicable using the responsible quality team's inspection method.
A change in closure material or bottle dimensions may affect performance even when the marketing name is unchanged. Ask the closure supplier to confirm the application and inspection requirements for the specific combination used on the automatic capping machine.
What should operators observe safely?
Note whether the cap is already tilted before tightening, whether the bottle moves unexpectedly and whether the defect repeats at a particular point in the run. Record startup, refill and restart conditions. Use safe external observation; do not hand-correct closures inside moving machinery.
Keep adjustments within the installed machine instructions. Access to tooling and driven components requires the prescribed shutdown and isolation method. Do not use repeated tightening adjustments as a substitute for checking cap placement and component compatibility.
How is a successful correction confirmed?
- Apply the agreed closure inspection or measurement method.
- Check visual condition and evidence of bottle or cap damage.
- Run representative production after normal replenishment.
- Record rejected packs and the conditions of the accepted setup.
What should be sent to support?
Share labelled component samples, pack photographs, machine details and measured results with after-sales support. The cap compatibility guide helps prepare the review when changing bottle sizes or closure types. Keep the final recipe tied to the tested components and retain the approval record for future production comparisons.