A single field of "material: plastic" is not enough to work with the PPWR. A packaging item may consist of a body, closure, label, adhesive, insert and coating, and each of these elements may have a different mass, material type, supplier and data basis. Good record-keeping starts with breaking the actual configuration down into components.
Configuration instead of a generic name
Packaging must be described in the context of the product, level and variant. A bottle of the same capacity may have a different closure or label depending on the market. A collective carton may change with the number of units. Data should therefore form a versioned snapshot, not a single record without history.
Each component should have an identifier, function, material, mass, supplier and source of the value. It is also possible to record whether the element can be separated and its relationship to other layers, if this matters for a later assessment.
Material and its classification
A supplier's trade name does not always correspond to the category needed for reporting or assessment. It is worth storing both the source description and the controlled classification used by the company. The mapping decision should have an author and a basis.
Multi-material components require more detail than assigning the dominant material. A coating, laminate or permanently bonded element may affect the assessment. If the exact composition is not known, the system should show a gap rather than create an apparently precise value.
Mass and how it is determined
Mass may come from weighing, a technical specification, a supplier declaration or a calculation. Each source has a different reliability and scope. The unit, tolerance, sample, date and method must be recorded. Rounding carried out at component level may lead to a different result from rounding the total.
It is worth separating nominal, measured and assumed mass for a specific calculation. A change to one value should indicate dependent results that need recalculating. The previous figure must not be overwritten without retaining the version.
Recycled material content
Information about recyclate requires the material, the share, the method of determination and the source document to be specified. A "recycled" claim from a commercial offer is not equivalent to controlled evidence. It is also necessary to establish whether the value relates to the component, the whole packaging item, the batch or the production average.
A supplier may provide a certificate, a declaration or a balance. The company should check the validity period, the production location, the product scope and the chain-of-custody method. Any doubt should be recorded for clarification, not omitted from the final percentage.
Supplier data and evidence
A request to a supplier should indicate the exact component and the expected units and documents. A generic message about "PPWR data" often leads to a response that cannot be attributed to a specific version. A form or portal should require an identifier and allow a source to be attached.
The file received goes through receipt, verification and approval. The person approving should know which values were used. After a change of supplier, the old evidence may remain in the history, but should not automatically support the new configuration.
Calculations without losing input data
Every result should be reproducible. The version of the formula, the input data, the rounding rules and the date must be retained. If the result depends on a delegated act or a method, its version must be indicated. A final number alone without a basis has limited evidential value.
The system may calculate totals and shares, but should block the calculation or mark it as incomplete when a component is missing. Zero and missing data are two different states. Confusing them may artificially improve the result.
List of working fields
- configuration and component identifier,
- packaging level,
- function of the element,
- source material and classification,
- mass, unit and tolerance,
- method of obtaining the value,
- recyclate share and its scope,
- supplier and production plant,
- source document and expiry date,
- person checking,
- status and change history.
What a controlled model gives
Such an arrangement makes it possible to compare variants, detect incomplete components and reuse data only where the scope matches. It also makes it easier to prepare technical documentation and to answer supplier questions.
GPSR / PPWR organises the structure, sources and revisions. It does not treat the mere filling in of fields as confirmation of compliance with the PPWR. The result requires assessment by a competent person on the basis of current requirements.
Data quality review
A periodic review should search for components without mass, values without a unit, evidence without a defined scope and records for which the supplier has changed. It is also worth comparing the sum of the component masses with the mass of the whole configuration and explaining differences instead of correcting them automatically.
A quality report should lead to a specific record and task. An overall completeness percentage is useful for management purposes, but only the list of gaps makes it possible to improve the data before the next assessment or the preparation of technical documentation.