Identify the package unambiguously
Record the bag supplier, fitment and cap part numbers and the current drawing revision. Request the relevant dimensions, tolerances and construction details. Packages with the same nominal volume or advertised neck size can have different working interfaces. Keep package identity traceable from selection through the acceptance trial.
Check the complete interface sequence
Review how the head engages the neck, opens the cap, protects the interface during filling and recloses the package. Identify required change parts and the process used at the interface. Confirm that proposed treatment conditions are suitable for the actual package components and form part of the established aseptic process.
Include changeover and closure checks
Describe each bag format to be used and the changeover tasks between them. Inspect closures using the package supplier’s agreed criteria and include leakage or integrity checks as required by the project. Validate compatibility with representative packages, not a nominal fitment description or an unverified cross-reference.
PRACTICAL ANSWERS
Frequently asked questions
Is a nominal neck diameter enough?
No. Geometry, tolerances, cap construction and the head-handling sequence also matter.
Can change parts make every bag compatible?
Do not assume this. Mechanical fit, package treatment and closure performance need separate checks for each interface.
What drawing should I send?
Send the supplier’s current fitment and cap drawing, part numbers, bag specification and the intended package support arrangement.