Understand bottle, cap and liner compatibility before comparing sealing machinery. Define the seal function, handling sequence and inspection needs.
Explain whether the requirement concerns leakage, a bonded liner, an over-cap sleeve or visible opening evidence. Include transport and storage conditions. Avoid choosing a machine solely from the appearance of a sample without understanding its packaging construction.
Send bottle, cap and liner together, including drawings where available. Neck finish, sealing land, cap application and material compatibility influence the result. Product on the bottle mouth can affect a process that depends on a clean bonding surface.
Describe the proposed quality checks and how packs are handled after sealing. Include line speed, bottle spacing and any cooling or dwell requirement advised for the selected system. Define how a suspect pack is identified and separated.
Write separate requirements for leakage control, a bonded liner and visible evidence of opening if more than one matters. Different packaging features can serve different purposes. A machine should be compared against the function required of the finished assembly, rather than against the visual appearance of another product pack.
Keep storage and transport conditions with that requirement, together with the intended opening method. Ask how the completed pack will be checked and who defines that check. This makes it easier to compare a proposed sealing route without mistaking the presence of a sleeve or membrane for a confirmed performance outcome.
The condition of the bottle mouth at sealing depends on earlier operations. Product residue, damaged necks or inconsistent closure application can affect the assembly being presented to the sealer. Share the filling and capping sequence, not just the sealing machine position, when planning the line arrangement.
Send the component supplier specifications and representative samples for each intended format. A change of cap, liner or container material may change compatibility even when the pack volume remains the same. Include format-change checks and handling after sealing within the proposed operating routine rather than treating each component independently.
A foil appearance does not establish a suitable bottle and liner bond. Confirm the container, liner and closure assembly for the proposed process using supplier information and representative samples.
An opening feature around the cap serves a different purpose from a mouth seal. Describe both requirements where needed and assess the finished pack against each separately.
The mouth surface that meets the liner matters to the assembly. Include neck condition, cap application and any product contamination when reviewing inconsistent sealing results.
Use these approaches to organise your application review. Confirm equipment suitability and scope against the actual product and pack.
| Approach | How to assess it | Consider when |
|---|---|---|
| Induction liner sealing | A compatible foil liner inside the cap is heated by an induction field to form a bond to the container. Bottle, liner and cap specifications need to be assessed together. | Suitable capped bottles requiring a compatible bonded mouth liner. |
| Direct mouth sealing | A lid or membrane is applied at the bottle opening using a compatible process. Container support, access to the mouth and the seal material determine the machinery concept. | Packs designed around a directly applied membrane or lid. |
| Tamper-evident sleeving | A sleeve around the cap and neck provides an opening feature when correctly specified. It serves a different purpose from a bonded mouth seal and should be reviewed accordingly. | Bottle packs requiring a visible cap-opening feature. |
Tell Lancing what you need to handle, pack or produce. Start with the details you know; use the application brief to organise the rest.
