A useful buying question makes the supplier define scope, conditions and evidence
Before buying a sleeve sealer, confirm exactly which products, bundle formats, PE films and outputs are included; what the wrapper, tunnel, conveyors and controls must do; which services and site works are required; and how the machine will be tested and accepted.
Use the same data pack for every proposal. A low headline price or high cycle figure is not directly comparable when the quoted line boundary, samples, tunnel duty, cooling, controls or acceptance test are different.
Ask the supplier to define the complete line boundary
| Subject | Question to resolve | Evidence in the proposal |
|---|---|---|
| Pack range | Which exact SKUs, bundle patterns and supports are included? | Format matrix with stated boundaries and exclusions. |
| Output | How is accepted output defined and under which test conditions? | Named format, film, run duration, line states and acceptance criteria. |
| Machine scope | Which wrapper, tunnel, conveyors, collation, cooling and controls are included? | Itemised equipment and interface responsibility. |
| Site scope | Which services, access, floor, ventilation and connections are required? | Utility schedule and approved layout. |
| Acceptance | What will be demonstrated at FAT and on site? | Test protocol, samples, pass criteria and records. |
| Handover | What training, documents and wear-part information are provided? | Defined handover list and responsible parties. |
Compare proposals on the same assumptions
- Issue one controlled application and format data pack.
- Ask each supplier to identify assumptions, exclusions and values subject to trial.
- Align the definition of accepted output and finished-pack quality.
- Separate base machinery, integration, site work and optional scope.
- Record variations before commercial approval and retain the accepted test plan.
Keep unsupported promises out of the acceptance decision
A proposal should distinguish published model reference data from the project-specific values that will be confirmed by sample testing, FAT or final engineering. Where samples or utilities are unavailable, mark the item as provisional rather than turning it into an assumed guarantee.
- Ask which pack sets each machine boundary.
- Confirm the exact film and roll format used for testing.
- Include stops, restarts and blocked discharge in the test where relevant.
- Define who approves product condition and finished-bundle handling.