Ask for a component breakdown linked to the exact packaging design and revision you are buying. It should identify the paper and board grades, grammage and thickness, component weights, finishes, adhesives, inserts and closures, together with the basis of any recycled-content claims and the documents supporting them.

For brands sourcing boxes from China for products sold in the EU, material data for custom paper packaging serves three connected purposes: comparing quotations, choosing a suitable construction and supporting applicable Packaging and Packaging Waste Regulation (PPWR) requirements. The connection is the physical box. Two samples can look almost identical while using different board, surface films or insert materials, with consequences for price, handling and recycling.

Start with the complete construction

A rigid gift box provides a useful example. Its construction may include greyboard in the lid and base, printed wrapping paper, an inner lining, a surface coating or film, several adhesive applications, an insert and a closure. A fabric-covered foam insert contains at least two materials worth identifying. A description such as velvet insert leaves both the fabric composition and the foam type unresolved.

Give the record a packaging code, revision date and drawing or sample reference. State what the complete empty pack includes, such as the box, insert and ribbon, and record any outer shipping carton separately. Show where each material is used. These simple boundaries make it possible to compare quotations and later connect documents to the construction actually ordered.

Grade, grammage, thickness and weight answer different questions

Grade identifies the type of paper or board. A useful description combines the material family with a supplier’s grade code or specification. Two white wrapping papers of the same grammage can have different surfaces and absorbency, changing colour reproduction and the way the paper accepts a finish. A physical reference establishes the appearance you want; the grade information helps reproduce it.

Grammage is mass per unit area. It is expressed in grams per square metre, written g/m² or gsm. A 157 gsm wrapping paper weighs 157 grams per square metre of that sheet. Its contribution to one box depends on the cut area used, including the material folded around edges. Request separate values for the board, wrapping paper and lining.

Thickness, also called caliper, describes the sheet’s physical depth. It is usually expressed in millimetres or micrometres. Papers with the same grammage can have different thicknesses because their density and structure differ. For a box quoted with 2 mm board, establish whether this means the bare board or the completed wall. Wrapping paper, lining and adhesive add thickness, which can affect lid fit and corner construction.

Component weight records how much material is present in one pack. It connects the specification to material totals and reporting. At quotation stage, cut area multiplied by grammage can provide a useful estimate for paper parts. As the sample develops, measured weights and agreed tolerances give a firmer basis. Record the measurement or calculation method, especially for thin coatings and small adhesive applications.

Reconcile the component total with the complete empty pack. If a supplied wrapping-paper weight already includes its film, show that inclusion before adding a separate film entry. For coatings and adhesives, use the dry material remaining in the package: wet application quantities can include water or solvent that evaporates. Purchasing consumption also includes production waste, so it serves a different calculation from finished-pack weight.

Identify how the finish and assembly are made

Matt, soft-touch and grease-resistant describe an effect. Ask how it is achieved: a film laminated onto the paper, a coating applied to its surface or a treatment incorporated into the sheet. Record the material identity, application area and thickness or dry coating weight. A water-based coating can leave a polymer-containing layer after drying, so its composition and recycling behaviour need their own explanation.

Adhesive information should describe its application as well as its name. The glue attaching a wrap to greyboard may differ from the adhesive fixing an insert into the base. A removable foam insert and one bonded over its full underside create different separation conditions. Adhesives can also affect recovered-fibre yield and quality despite representing a small share of the box’s weight.

This information makes design comparisons more useful. If a finish mainly protects printed surfaces from scuffing during retail handling, we can develop alternatives around that requirement, compare physical samples and investigate their material implications. At CMIC, we can coordinate the underlying information from paper, finishing and component suppliers, keeping each option connected to the sample and specification being discussed.

Give recycled-content percentages a clear scope

Ask whether recycled content is pre-consumer, post-consumer or a documented combination. Post-consumer material comes from material discarded after its intended use; pre-consumer material is diverted from waste during manufacturing. Request the definition or standard used, including how production trim and internal rework are treated, together with the grades and production period covered by the declaration.

Then establish the calculation basis. A percentage might describe the fibre input used to make the board, the total mass of the supplied sheet or the complete packaging. Fillers, coatings and other constituents make those different quantities. For a whole-pack percentage by mass, the calculation needs the substantiated recycled-material mass in each component, added together and divided by the total pack mass. Keep unknown contributions identified as unknown.

Illustration: an 80% recycled board does not make an 80% recycled box. Suppose a complete empty gift box weighs 200 g. Its board accounts for 140 g and is documented as 80% recycled material by total board mass. Assume the remaining 60 g of wrapping, insert and other materials contains no recycled material.

The board contributes 140 × 0.80 = 112 g of recycled material. Across the complete box, that is 112 ÷ 200 × 100 = 56%. The 80% figure describes the board; the 56% figure describes this illustrative package. Both depend on the stated mass basis.

The PPWR’s minimum recycled-content provisions in Article 7 concern plastic parts, with specific scope rules and exceptions. They do not establish a general minimum recycled-fibre percentage for paperboard. Identifying a plastic film or insert separately allows its applicable requirements to be assessed using the appropriate information, while the paper and board declarations retain their own scope.

Match the evidence to the material and the question

The PPWR has generally applied since 12 August 2026, with separate application dates for individual requirements. Articles 15 and 16 connect supplier information to the manufacturer’s conformity assessment, technical documentation and EU declaration of conformity. A component record is a practical way to organise those inputs; the table above is a purchasing format, rather than a prescribed EU form. Establish which party acts as the manufacturer under the regulation for the particular sourcing arrangement.

• Material specifications and supplier declarations identify the supplied grade and support stated properties. A recycled-content declaration should explain its scope, definition and calculation basis, with records connecting it to the supplied material.
• Test reports describe what was examined and under which conditions. Request the report reference, issuer, sample description, relevant colours or formulations, test method, results and limits. Establish whether the sample was a raw material, an individual component or the finished construction.
• The EU declaration of conformity identifies the packaging covered and the legal and technical basis for the declaration. Its packaging reference should connect to the approved construction and supporting documentation. A report for one input contributes evidence to that assessment.

Choose substance evidence around the material and intended use. A report covering lead, cadmium, mercury and hexavalent chromium supports conclusions about those tested substances in the identified sample. Read a result reported as not detected alongside its detection limit. If paper or a liner will contact food, specify the food and contact conditions so the applicable food-contact documentation and PPWR PFAS requirements can be addressed.

Recycling evidence should identify the assessed construction and recycling process. The 4evergreen Circularity by Design Guideline, February 2026, explains how paper constituents, coatings and integrated components affect different mill processes. It also recommends testing final designs because the converted package’s composition matters. A plain-board result leaves questions about a finished box with added film, adhesive and fittings. Industry guidance and test results provide technical evidence; a PPWR recyclability grade requires the applicable legal assessment methodology.

Keep public wording connected to that evidence. Article 14 sets conditions for environmental claims about packaging properties regulated by the PPWR, including exceeding applicable minimum requirements and specifying whether the claim concerns a packaging unit, part of a unit or all packaging placed on the market by the operator. A useful internal material calculation is one input to substantiating the wording you intend to publish.

Keep the record connected when materials change

A replacement wrapping paper may match the approved colour while using a different coating. An alternative adhesive may hold the insert equally well while changing the basis of existing recycling evidence. Agree how substitutions will be identified and reviewed before production, and connect the approved revision to the order and relevant production records. Article 15 requires reassessment where changes could affect conformity; the work needed depends on what changed and which evidence remains applicable.

At CMIC, we can help resolve consequential gaps upstream: clarify whether a mill’s recycled-content percentage refers to fibre or sheet mass, identify the actual material behind a finish description, or connect an insert supplier’s report to the proposed component. Where the existing information leaves a material question unanswered, we can develop alternatives or coordinate appropriate testing. That gives the customer a decision to make with clear consequences for appearance, protection, cost and supporting evidence.

For the wider purchasing process, see our guide to sourcing PPWR-ready custom paper packaging.

If you already have a quotation or sample, share it with us along with the product and intended EU destinations. We can help turn the material descriptions into an agreed specification and identify which unanswered questions could change the design, the price or the evidence needed.