Say exactly what the sample approval covers
Approve luggage lining in defined stages, with a final release tied to the actual production specification. ‘Sample approved’ is too broad when one swatch represents color, another represents texture, and a sewn prototype uses temporary zipper tape.
Start an approval record with the suitcase model, lining reference and revision. List each submitted sample and its purpose. If the buyer accepts a lab dip for shade only, write that limitation beside the signature. If a liner fits but uses substitute fabric, retain it as a fit reference rather than quietly treating it as the complete production standard.
Assign one decision owner for each area and one person to consolidate the release. The designer, purchaser and factory should be able to find the same current version without interpreting a long chain of contradictory messages.
Use the next sample to answer an unresolved question
Choose samples according to what remains uncertain. A full sewn liner is unnecessary for an early comparison of fabric body, but a small swatch cannot prove how the liner clears the handle housing. Ask each submission to resolve a specific decision so revisions have a purpose.
For cut panels or sewn liners, provide the actual internal dimensions and panel information. A nominal cabin or checked-case size is not a complete pattern specification. Identify the shell revision used for fitting and record any differences between the trial shell and the intended production shell.
| Submission | Decision it should resolve |
|---|---|
| Material swatch | Proposed construction, surface, handling and finish |
| Lab dip or print strike-off | Color or artwork on an identified substrate |
| Representative sewn section | Zipper, binding, seam behavior and local construction |
| Complete liner for the actual shell | Fit, orientation, coverage and access to internal fittings |
| Production submission | Whether the production material and assembly match the released requirements |
Review the liner in the case, not only on the table
Fit the sample into the intended shell. Inspect the corners, zipper route, divider opening, pocket reach and coverage around internal fittings. Mark any pulling, loose areas or exposed edges directly on a drawing or annotated photograph, then refer those comments to the sample ID.
Operate the divider and pockets as designed. Check that logo direction remains intentional when a panel opens and that the approved visible face is presented correctly. If the buyer requires a specific loading or use trial, agree its procedure and acceptance criteria in advance; do not improvise a demonstration and call it a laboratory test.
Separate a pattern correction from a material correction. If a corner pulls tight, ask the maker to diagnose the cause before changing both fabric and panel dimensions in the same revision. Changing one controlled factor at a time makes the next sample easier to judge.
Keep sample approval separate from shipment acceptance
Retain matching approved samples with the buyer and supplier, clearly dated and labeled. Link physical-test reports, color approvals and any material documents to the same specification. Record what remains pending before anyone starts bulk cutting.
Agree how production rolls and shipments will be inspected. ASTM D5430-26 provides visual fabric inspection and grading methods; its public description notes that the selected point-assignment option affects the result. If the parties use that standard, name the agreed option and acceptance requirements rather than writing only ‘four-point inspection.’
A signed swatch establishes a reference. It cannot show that every delivered roll is free of faults, that all lots match in shade or that the packed quantity is correct. Keep the shipment inspection plan and lot records alongside the approval file.
Issue a release the production team can follow
A concise release can read: ‘Model [ID], shell revision [ID], fabric specification [revision], approved liner [sample ID]. Approved items: [list]. Open items: [list and owner]. Production may begin when [named conditions] are closed. Changes to fabric, finish, pattern or specified components require documented review.’
Archive superseded versions and mark the live production documents clearly. When a change is requested, describe its reason, the affected parts and the evidence needed for reapproval. This avoids repeating the entire development process for a minor correction while still preventing an unreviewed substitution from reaching bulk production.