Tethered Cap Format Trial: Handling and Closure Checks

Plan a tethered-cap format trial across feeding, capping, inspection, conveying and packing; record the exact approved bottle-cap combination.

What to establish first

Treat a tethered-cap change as a package-and-equipment trial rather than a cap name substitution. Verify the actual cap, neck and attachment geometry through feeding, closing, inspection and downstream handling.

Three checks before a change

Collect approved bottle-neck and cap drawings, orientation requirements and trial samples. Identify any material or geometry change from the existing package.
Review supply, sorting and transfer with the actual cap. Verify compatibility of change parts and inspection views under an agreed guarded trial.
Assess closure application and the intended package functions using the agreed supplier methods. Document rejects, format parts and operator setup before releasing production.

Interpret the observed pattern

Observed pattern	Next review
Neck designation matches the old format	Compare actual drawings, tolerances and tether geometry. A designation is a starting point for interface review, not proof that existing change parts fit.
Closure applies but downstream interference occurs	Map tether orientation and clearance through inspection, conveying and packing. Approval needs the relevant complete path, not a capper-only demonstration.
A trial succeeds on one combination	Record the exact bottle, cap, parts and recipe revisions plus acceptance results. Keep unsupported formats outside the approval until their own assessment is complete.

Evidence to record

Use these fields as a worksheet. Keep individual results and comparison samples; an overall average alone may hide the affected condition.

Record item	Required evidence
Cap and neck drawing revisions	Identify the exact format, lot and document revision; attach a representative sample or record.
Samples and orientation requirements	State the location, method, instrument and operating condition so a comparison can be repeated.
Change parts and inspection setup	Link the observation to an individual sample and a common timestamp; retain both normal and affected cases.
Trial scope and closure results	Record the approved assessment, action, verification result and responsible person; keep unresolved items visible.

Controlled trial and acceptance

Agree the observation, affected boundary and acceptance method before starting a trial. Identify the product-package combination, approved settings and responsible equipment or quality owner. A test must have a clear question and a controlled disposition for trial material.

Compare the existing and proposed condition with identified samples using the same measurement basis. Change only what the responsible owner has authorised. Include the relevant steady-running, stop or restart case; one passing sample does not establish repeatable operation.

Keep results, samples and configuration revisions together. Record what passed, what remains open and the exact approved scope. If a correction moves the defect to another process step or compromises another acceptance requirement, retain that result and continue the assessment.

Common question

Can a tethered cap use every existing screw-cap setup?

Compatibility must be tested on the actual interface. Attachment geometry, handling and inspection can require changes even when a nominal diameter appears unchanged.

Technical reading

The linked manufacturer material provides engineering context. This worksheet is an independently written diagnostic framework; the installed equipment’s approved instructions and the site’s product acceptance determine the actual procedure and limits.

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China Beverage Machinery is operated by Allot Tech (Suzhou) Co., Ltd. for machinery sourcing, configuration planning and export project coordination.