A reed diffuser’s decorative collar and its transport seal can be separate parts. For a plug-and-collar design, the plug closes the bottle for the packed state; the collar finishes the neck and may remain when reeds are inserted. Another design may use a closed cap with a liner instead. Specify the actual assembly, rather than ordering everything under the word “cap.”
This guide helps fragrance packaging buyers hand the same component list to the glass supplier, filler and packing team. It focuses on what is fitted during transport, what the customer removes, and what stays on the bottle during use.
Name the part by the job it performs
Use a component name and a function together in the purchase brief. A supplier may call an open-centre neck ring a cap, collar or cover. A photograph of the outside cannot tell the filler whether there is a separate stopper underneath, a liner inside, or another sealing arrangement.
| Part or feature | Role to define | Question for the component supplier |
|---|---|---|
| Transport plug / bung | A removable closure within the proposed neck arrangement | Which exact bottle and insertion method is it intended for? |
| Open-centre collar | The visible neck finish around the reed opening | Does it have a separate sealing part, and what remains during use? |
| Closed cap with liner | A cap-and-liner system proposed for the closed bottle | Which liner and matched neck are specified? |
| Reed bundle | The insert used after opening | Is it packed separately, and does it pass through the intended opening? |
For a documented example, CandleScience’s collar instructions describe a separate plastic plug for transport and its removal before adding reeds. Those instructions apply to its named bottle system; they do not establish compatibility with another supplier’s glass.
Choose between two closure arrangements
Plug plus open collar: identify the plug and collar separately on the parts list. Ask the supplier to show the packed assembly and the arrangement after the plug has been removed. Confirm whether the collar must first be unscrewed or lifted, and have the responsible team check the opening sequence on the actual samples.
Closed cap with liner: identify the cap, liner and bottle neck as a matched set. Candle Shack lists an EPE-lined cap for specified bottle families as an alternative to a plug. This illustrates why a separate bung is not part of every design. It is not a recommendation to fit that cap to a JUNOVA bottle.
Ask what the customer does with a closed cap after opening. If the intended display also needs a collar, include that additional part in the pack record. Do not let an attractive closed-bottle image stand in for a picture of the product as the customer will use it.
Make a three-view handoff for the filler
Request a small set of assembly references: the separate components, the packed bottle, and the bottle ready for reeds. Use the same part identifiers in each view. This makes it easier to spot a missing plug, an unlisted liner or a collar that was only a styling prop.
- Before assembly: record the bottle drawing revision, closure part numbers and the identified sealing element. State which team supplies each item.
- Packed state: mark which pieces are installed and which are loose in the retail pack. Ask the filler to confirm its proposed assembly method with the component supplier.
- In-use state: mark what is removed, what remains and where the reeds pass. Review the proposed opening instructions against the sample.
For example, an enquiry based on JUNOVA’s emerald reed diffuser reference can ask for three separately identified items: the glass form, the visible neck component and the proposed transport closure. The catalogue scene supplies a visual direction; request the available component scope and matched drawings rather than assuming the pictured pack is supplied complete.
Record unanswered items explicitly. If the filling partner has not selected the closure yet, write “transport closure to be confirmed” instead of approving a photograph as a finished assembly. Use the sample approval record to keep the agreed versions together.
Keep one component record through every revision
The Download closure handoff sheet (CSV) provides blank fields for the bottle, sealing element, collar, packed state, opening sequence and responsible partner. It sets no dimensions, material approvals or test limits.
Have the filling and component partners define the checks for the actual formulation, selected parts and intended distribution route. A matched-looking cap does not establish a verified seal, and one approved component does not approve an unreviewed substitute. Keep any evaluation method, observations and acceptance decision linked to the specific assembly. This guide does not prescribe a universal torque, exposure duration or transit test.
When a supplier proposes a changed plug or liner, update the component record and ask which previous approvals need review. Keeping the same outside finish does not make an internal change invisible to the filling team.
For the wider shape, decoration and quotation decisions, continue with our custom reed diffuser bottle buyer’s guide. To discuss a new assembly, browse the reed diffuser collection or send a custom glass development enquiry with the selected form and component handoff sheet.