Under extended producer responsibility (EPR) for packaging, the brand owner or importer that puts the filled bottle on sale carries the reporting duty and the fee, not the glass plant. What you need from the glass supplier is narrow and specific: the glass material category, the nominal bottle weight with its tolerance, the base colour, any coating, ceramic decoration or applied sleeve, and the recycled content share together with the definition behind it. Quantity sold per country, the classification decision and total pack weight are figures no bottle supplier can give you. Nothing here is legal advice; it describes the data and how responsibility for it is divided.
The obligation follows the party that places the filled pack on the market
Buyers often assume the bottle maker answers for the packaging waste its bottles become. In an EPR system the duty attaches instead to whoever first sells the packaged product in the destination, which in practice is the brand owner, the importer of record or the first domestic supplier of the filled pack. A glass plant produces a component. It does not register with the scheme, file a return or pay a fee on packaging placed on the market.
The commercial effect is that the brand pays a fee worked out from packaging weight and material, and the brand is the one whose declaration can be audited. Yet much of the weight being declared comes from parts the brand never made: bottle, closure, label and secondary pack. If the purchase contract is silent on data supply, the brand is answering for numbers it has no control over.
Three things follow from this:
- Data supply should be a contract deliverable with a stated content, format, frequency and due date, not a favour asked at year end.
- Decide early whether you will declare per component or per pack. Each route needs different figures from different suppliers.
- Expect to collect data from every packaging supplier. A fee built on total pack weight cannot be derived from the glass by itself.
Some questions sit outside procurement altogether: which entity is legally the producer, where the registration threshold lies, whether a small or imported volume is in scope, and how a given scheme treats a material. Put those to your own compliance function or adviser and to the scheme operator in the destination.
Work in three stages, starting with an obligation map
The work is cheapest when done in order. Brands that begin by chasing suppliers for figures usually gather data the destination never asks for and miss the single number it does.
Stage one, the obligation map
For each destination, establish whether an EPR scheme applies, which pack components it covers, what categories it uses and how the fee or its modulation is calculated. Record the result as a short table: a row for each market, a column for each required data point. This takes internal time only.
Stage two, design decisions that are still open
Where a scheme charges by weight, component weights stop being something you report afterwards and become a design input. Lightweighting, swapping a material, or deleting a sleeve or film each has an effect you can calculate. Fee modulation is generally easier to influence while the bottle and its decoration are still unfrozen, so this is where a brand can actually lower its future obligation.
Agree with your filling operation, at this same stage, where the declared weight comes from: a nominal figure, a measured average or the supplier's specification sheet. The three give different answers, and the scheme may say which one it accepts.
Stage three, the data package
The package consists of the request sent to each supplier, the reply format, an internal owner for every line and a collection date in the calendar. Build it so that a gap shows up plainly. A declaration quietly assembled from partial data carries more risk than one that openly states what is missing.
Five pack attributes that drive the declared figures
EPR rules tend to be presented as fixed, but a good part of what gets reported comes from design choices still in the brand's hands. Handled as an early procurement decision, they produce a fee you can model. Left to the compliance stage, they produce a surprise.
- Material composition. Glass taken alone is a single material that recycles again and again, and most schemes score it well. The difficulty lies in what is attached: a plastic closure with a liner, a pressure-sensitive paper label and its adhesive, a full-body plastic sleeve, shrink film, a laminated carton. Every one of these becomes its own line in the declaration, judged under its own material category. Fewer materials means fewer reporting lines and a simpler fee calculation.
- Weight. Fees are mostly calculated or modulated by mass, so the declared figure is component weight times quantity sold. The bottle counts twice over: it is the heaviest single item in the pack, and any later lightweighting changes the declared figure and with it the fee.
- Recyclability design. More and more schemes adjust the fee by how well a component suits existing collection and sorting infrastructure.
- Recycled content. Some schemes reward it, others only require it to be declared.
- Reuse or refill status. This is judged apart from recyclability and has its own evidence requirements in markets that have started regulating refill formats.
The working tool is a component-level bill of materials for the pack, each line carrying a material category and a weight, kept current jointly by packaging and procurement. With it, a supplier query becomes a precise request, and a proposed component change can be tested against the declaration before anyone approves it.
What the bottle plant can evidence and what only the brand holds
The table lists the figures a packaging waste declaration typically calls for and splits each one between the two parties. Use it as a request template. Any row you cannot fill in now is a row you will be rebuilding against a filing deadline.
| Data point | Source of the data | Bottle plant supplies | Brand owner supplies | Format and frequency to agree |
|---|---|---|---|---|
| Material type per component | Each component maker; the brand consolidates | Glass composition category, plus the nature of any decoration or coating the plant applies | Material category for closure, label, sleeve, adhesive, film and carton, obtained from their respective suppliers | One bill of materials, a line per component, each with a material category the scheme recognises |
| Component weight and total pack weight | Component specification sheets; the brand consolidates | Nominal bottle weight and its tolerance band, kept separate from capacity data | Weights of all other bought components, and the choice between nominal and measured-average declaration | Dated weight table by item code, reissued when a component or mould changes |
| Recyclability design assessment | The brand, using design data from each component maker | Physical inputs: base glass colour, presence of a coating or ceramic decoration, whether a sleeve is applied | The assessment, and which scheme's design criteria are applied in which market | Design-for-recycling note by item code, stating the criteria used and any components that fail |
| Recycled content of the glass | The glass plant and, if required, its material suppliers | Recycled input share for the glass, with production cullet shown apart from post-consumer glass | How the claim is worded on artwork, and whether certification or verification is needed | Periodic statement giving the definition, the period and the calculation method |
| Reuse or refill status | The brand, from its pack design | Container data a refill or return system relies on, for example wall thickness, neck finish repeatability and the designed number of wash cycles | Whether the pack is marketed as reusable or single-use in each destination | Written statement per market, since reuse is assessed apart from recyclability |
| Quantity placed on the market by country | The brand owner only | Nothing except confirmation of what shipped against the order | The whole figure: units sold, transferred or imported, by market and by material where required | Monthly or quarterly internal roll-up, reconciled to shipments before filing |
| Fee modulation category or band | The scheme operator, from data the brand submits | Design facts that help or hurt a favourable band for the glass | The classification decision and its evidence pack | Classification note by item code with design data attached |
| Change notification | The brand, told by its suppliers | Notice of any change to bottle weight, colour, decoration or applied sleeve | Re-declaration, and a judgement on whether the pack has shifted category | Named list of triggers and a notice period written into the supply agreement |
| Supporting statement or declaration | The brand owner, backed by supplier documents | Technical documents behind the glass figures it provided | The signed declaration and retention of its evidence | Document index tying every declared figure to its supplier evidence |
| Reporting period, frequency and retention | The scheme in each destination | Nothing, though the plant's record-keeping period should be compared with the brand's duty | Confirmed period, filing deadline and evidence retention time | Calendar entry per market noting the retention rule |
This page concerns what a brand reports and which plant figures can stand as evidence. How a plant cuts energy use and emissions and manages recycled glass in production is a separate subject, covered under sustainability data for glass packaging.
How colour, decoration, labels and closures affect the recyclability score
Container glass ranks high for ease of recycling, so schemes are generous to the glass itself. Penalties nearly always originate in what is fixed to the bottle or packed around it. Knowing which choices trigger them is how a brand keeps the bottle's favourable treatment.
Glass colour
Clear glass and the usual amber and green have established collection and sorting streams. Very dark colours close to opaque, and decorative effects that change how an optical sorter reads the glass, may drop a container into a lower grade or a separate stream. If brand identity depends on a deep or unusual colour, make that choice knowing the sorting consequence.
Decoration and coating
Ceramic printing and organic coatings alter the surface, and some processes can remove them only by burning or abrasion. For that reason a scheme may rate a decorated bottle differently from a plain one of identical base glass.
Label and sleeve
This is normally the biggest factor. A paper label on a wash-off adhesive that lets go during glass washing is broadly compatible with the glass stream. Plastic labels, and above all a full-body shrink sleeve that cannot be separated from the container, disrupt sorting and washing alike and are commonly scored as a distinct material on far worse terms. Partial sleeves, neck labels and metallised or foil-blocked stocks each bring a problem of their own.
Four questions settle the matter, and all can be answered before artwork is final: does the label or sleeve detach in the process the destination uses, does it cover the entire body, what is the substrate, and what is the adhesive chemistry. Answering them at that point costs far less than re-running a pack once a scheme has published its classification.
Closure, liner and secondary pack
Closure and liner are separate material lines and can account for most of the non-glass weight. A lighter closure, a mono-material closure and a liner compatible with the material stream reduce declared weight and design penalty together. In the outer pack, choosing between a corrugated tray, shrink film and a reusable plastic crate changes the material categories you declare, not just the look; the forms are described in our guide to secondary packaging for glass bottles, and the document that records the chosen configuration is the packing specification.
One principle runs through all of these: keep the materials simple. It helps the fee calculation and the real sorting result at once.
Recycled content needs a named definition and an agreed form of proof
The phrase "recycled content" covers three different quantities, and schemes do not agree on which one counts.
- Production cullet is broken glass arising inside the plant, or coming back from its forming process, that goes into the melt again. It lowers furnace energy and raw material use and is recycled in the industrial sense, but it is not post-consumer, and a growing number of schemes leave it out of a recycled content claim.
- Post-consumer recycled glass has been recovered through a collection scheme and reprocessed. Fee modulation and labelling rules mostly mean this.
- Recycled share of batch input at a particular moment is a process figure that moves with cullet availability.
A plant may hold all three and will answer with whichever it is asked for. Your request therefore has to state the definition, not just use the word. Our guide to recycled glass in production explains the material flow itself.
Settle the form of proof in advance as well. A periodic supplier statement giving the definition, the share and the period will do for many internal uses and for some declarations. A stricter scheme or customer may want verifiable, traceable evidence: material supplier documentation, a mass balance calculation over a defined period and sometimes independent verification. The effort differs greatly between the two, and a brand that first hears of the strict version from a retailer will be reconstructing records that were never kept that way.
Two habits keep a claim defensible. Fix the definition in writing with the supplier before publishing anything, so the underlying data matches the scheme's method when someone asks for it. And keep the figure conservative and current: an old number presented as today's position is easy for a third party to challenge, and withdrawing a published claim costs more than stating a smaller one.
Selling one bottle into several markets
A container shipped to several destinations can fall under several reporting regimes at the same time, and the differences are substantive.
- Where the duty attaches. Some markets treat the brand named on the pack as producer. Others look to the first party placing the goods on the domestic market, which could be the brand, the importer or a local distributor depending on how the sale is structured. Two destinations may thus put the same duty on two different legal entities within your own supply chain, which is why the obligation map is drawn per market.
- Granularity. One scheme takes total tonnage by material; another wants it by item or by component. The collection effort is very different.
- Treatment of the same material. An identical paper label, plastic closure or recycled content figure can be scored differently, so a design that earns favourable modulation in one place may be neutral in the next.
- Timing. Schemes revise categories and fee structures independently. A pack classified favourably two years ago may not be now.
Building a bespoke pack for every destination multiplies the supply chain. The workable answer is a single pack that performs acceptably against the strictest criteria among your main markets, with the reasoning written down so a later change can be traced to the criteria it was designed for.
Four data handling errors and how to correct them
Most trouble traces back to four errors. They share a cause: the data request was designed at reporting time when it should have been designed at specification time.
| Error | What happens | Correction |
|---|---|---|
| Asking the wrong party | A brand asks the bottle plant for total pack weight, gets a bottle weight, and may not spot the gap because the reply reads like an answer | Base the request on the component bill of materials and route each line to its owner |
| Wrong granularity | An annual tonnage cannot satisfy a scheme that wants an item breakdown, and production records may no longer exist in a form that allows reconstruction | Set granularity during obligation mapping, ahead of the reporting period |
| Nominal treated as measured | A specification sheet weight is a design target with a tolerance, while the scheme may expect the weight actually sold. The gap is small per unit but can be significant over a year's volume | State the basis being declared and apply it consistently |
| Lost evidence trail | Figures gathered from several suppliers across several months cannot be defended unless each traces to a document | Maintain the document index as data comes in, not when a question arrives |
What to write into the supply agreement and the brief
Three clauses belong in the supply contract, as directions for your legal or compliance adviser to draft:
- A data clause listing exactly which figures the supplier provides, in which format, how often and by what date.
- A change notification clause obliging the supplier to report any change in bottle weight, colour, decoration or applied sleeve, since any of these can move the declaration.
- A plain statement of which party owns which part of the obligation.
When you ask us for a data checklist fitted to your pack, send three things: the market or markets where the filled pack will be sold, the approximate annual volume in units, and the present packaging composition, namely bottle, closure, label or sleeve, any film, and carton or tray. Include the bottle weight if known and mention any decoration, coating or full-body sleeve.
From that we can indicate which data points are likely to apply, which ones the bottle plant can provide and in what form, which must come from your other packaging suppliers, which recycled content definition to fix in writing, and which design choices protect the treatment of the glass. The same habit of asking for a written basis instead of a verbal assurance applies to container volume, covered in our guide to fill volume and capacity compliance.
Questions buyers ask about glass bottle EPR compliance
Does the glass plant pay my packaging waste fees?
Normally not. The fee belongs to the brand owner or importer selling the packaged product, and a component supplier is outside the scheme. The plant's part is accurate data on the glass it produced, which is why that data should be a contract deliverable.
Which figures should a glass supplier be able to give for an EPR declaration?
Glass material category, nominal weight and tolerance, base colour, the presence and composition of any coating, ceramic decoration or applied sleeve, and recycled content with its definition. Some schemes add a question on reusability. Quantity sold, classification and the weight of parts made by others remain with the brand.
What counts as recycled content in a glass bottle?
Whatever the scheme's definition says. Many exclude production cullet and count only post-consumer glass recovered through collection. Ask the supplier for a figure against a named definition and period.
Do labels and sleeves change the recyclability assessment?
Yes, and usually by more than the glass does. A non-separable full-body plastic sleeve, a plastic label or an adhesive that fails to release in washing can move the pack to less favourable treatment. Paper labels on wash-off adhesive are generally the compatible option.
Can a single bottle design meet the requirements of several markets?
Usually, provided it is designed against the strictest criteria among the main destinations and those criteria are recorded. Schemes differ in where the duty attaches, in category definitions, in reporting frequency and in design criteria; none of them is simply right or wrong.
How often do the reporting rules change?
Each scheme amends its rules and design criteria independently of the others. Record the version and date of the rules a pack was designed against, keep the obligation map updated market by market, and agree a notification route with every supplier so a packaging change prompts a review of the declaration.