Before quote
Screen the route.
Photos, dimensions and target output can start the discussion, but physical bottle and cap samples are the safest way to confirm tooling and handling.
Acceptance checks
Set capping line pass/fail checks before final selection.
Define the evidence, samples and quality checks needed to judge whether a capped bottle is acceptable in production.
Acceptance testing
Define how a capped bottle will be judged before the machine is selected.
A capping machine should be assessed against the closure and the production process, not only by whether the cap is on the bottle. Acceptance checks can include torque, seating, cap height, tamper evidence, leak risk, cap alignment, bottle condition and the reliability of cap feeding.
| Acceptance area | What to check | Evidence that helps |
|---|---|---|
| Closure application | The cap is placed, tightened, rolled or pressed in the intended position without damaging the bottle or closure. | Good samples, rejected samples and clear photos of the required finished pack. |
| Torque or opening force | The closure can be tightened consistently without over-tightening, low torque, bottle spin or cap damage. | Existing acceptable packs, any internal method and details of the customer’s quality checks. |
| Tamper evidence | Tamper bands, ROPP roll formation or other security features are formed and seated as expected. | Cap samples, neck finish details and examples of acceptable and unacceptable results. |
| Leak risk | The closure and liner behave correctly with the bottle, product and filling condition. | Product type, fill level, storage concerns and any leaking examples already seen. |
| Feeding reliability | Caps feed, orientate and present repeatably without frequent manual intervention. | A representative cap quantity and any information on static, nesting or supplier variation. |
| Line behaviour | The capper works with upstream and downstream equipment without pressure build-up or uncontrolled bottle flow. | Existing line photos, layout sketch and conveyor information. |
Sample-led sign-off
Use samples to agree the pass/fail method.
Before build
Confirm what success means.
Agree whether the priority is torque, leak reduction, tamper evidence, cap alignment, seated height, feeding reliability or a combination of checks.
Before install
Check the line environment.
Conveyors, upstream filling, downstream labelling and operator access can affect performance once the capper is placed in the production line.
FAQ
Acceptance testing questions
Can acceptance checks be agreed without final torque figures?
Yes. A project can start from the required finished pack, known good examples and rejected examples, then torque or other quality checks can be discussed from there.
Should rejected samples be sent?
Yes. Rejected samples can show failure modes such as cross-threading, leakage, bottle distortion, poor tamper-band formation or cap presentation issues.
Is cap feeding part of acceptance testing?
For automatic systems, yes. A capped bottle can only be consistent if the cap feeder, track, sensors and bottle handling are reliable in the intended line context.