What markings are required on packaging?

Packaging that reaches the recipient without the appropriate markings is not only a formal problem – it is a real risk of damage to the goods, refusal of acceptance by the carrier and legal liability of the sender. Meanwhile, markings on cardboard packaging are treated by many companies as a secondary issue, regulated by general habit, not a specific standard. In fact, the packaging labeling system is precisely codified at international level and varies depending on the type of transport, the nature of the product and the target market.

This entry organizes this knowledge from a practical perspective: it discusses essential signs on packaging, manipulation signs, warning signs and requirements specific to packaging for sea transport and industrial packaging. Everything is based on ISO 780, ASTM D5445 and IMDG Code standards, which apply regardless of whether the sender is a local manufacturer or an exporter serving global markets.

Basic symbols on packaging – the basis for identifying the shipment

Basic symbols on packaging they create a basic set of information identifying cargo in the supply chain. The ISO 780 standard divides them into two groups: address data (recipient, destination country, shipment number) and unit identification data (gross and net weight, external dimensions, item number in the list). This information must be placed on at least two perpendicular walls of the package, in a place that is visible without the need to turn the package.

In practice manufacturer of cardboard packaging can integrate fields for basic signs directly into the cardboard print structure, which eliminates the need to stick separate labels. This solution is particularly valuable in series with repeatable specifications, where variable data (batch number, production date) are printed thermally or inkjet, and fixed elements (logo, manufacturer’s data, packaging format) are part of the flexographic printing matrix.

For industrial packaging intended for high-bay storage, it is also important to mark the permissible stacking height – expressed in the number of layers or the maximum vertical load in kilograms. Lack of this marking during automatic stacking (AutoStore, Dematic systems) may lead to exceeding the BCT index and collapse of the stack, which, with a pallet load of 600-1,200 kg, poses a threat to both the goods and warehouse workers.

Manipulation signs on packaging – cargo handling instructions

Manipulation marks on packaging are pictograms defining how the shipment should be handled during loading, transport and unloading. Their catalog is defined by the ISO 7000 standard and the European standard EN 826, and the graphic appearance is unified enough to be readable without knowledge of the language – which is particularly important in international trade. The most commonly used are:

• A glass (“Careful – fragile”) – mandatory for glass, ceramic products and consumer electronics; signals the need to avoid shocks and impacts.
• Umbrella (“Protect from moisture”) – required for water-sensitive goods; in maritime transport, its presence is a necessary condition, not an optional addition.
• Directional arrows – determine the orientation of the packaging; their absence in asymmetric products (e.g. devices containing liquids) may result in leakage or damage to the mechanism during transport.
• Hook (“Lift here”) – indicates the correct attachment points for loads with an irregular center of gravity; especially important for industrial machines and household appliances.

Omission manipulation signs on the packaging is not only an aesthetic issue – in the case of transport damage, the lack of markings may be an argument for the insurer to refuse to pay compensation. Well designed packaging materials they take into account the location of pictograms already at the die design stage, integrating them with the print or reserving zones free from advertising graphics where the signs will be legible.

Warning signs on packaging – requirements for dangerous goods

Warning signs on packaging apply to all loads classified as dangerous within the meaning of ADR (road transport), RID (rail), IMDG Code (sea transport) and IATA DGR (air) regulations. The classification system includes 9 hazard classes – from explosives (class 1) through flammable liquids (class 3) to infectious substances (class 6.2). Each class is assigned a pictogram in a strictly defined color palette and geometry – a pink rhombus with a flame means a different threat than a white rhombus with a skull.

For packaging for sea transport IMDG Code requirements impose additional obligations: UN Number marking (four-digit substance identification code), packing group (I, II or III, indicating the level of hazard) and details of the sender and recipient in the version consistent with the bill of lading. Packaging must be certified by an accredited body – the UN symbol on the carton confirms that the structure and material have passed strength tests in accordance with the Recommendation on the Transport of Dangerous Goods.

It is worth making a distinction warning signs From information signs on packaging. The former indicate an active threat and are regulated by law. The latter – such as the recycling symbol, the Tidyman mark (a figurine throwing garbage into the bin) or the indication of the packaging material (e.g. PAP 20 for corrugated cardboard) – are of an informational and environmental nature and result from EU directives, including the Packaging Directive 94/62/EC and the PPWR Regulation, which tightens labeling requirements from 2030.

Markings on packaging in sea transport – specificity of export

Maritime transport requires the widest set of markings of all transport modes. This is due to the long voyage time (30-60 days), multiple transhipments at transit ports and legal differences between loading and destination countries. Sea transport packaging must contain: address markings in the language of the destination country or in English as the lingua franca, reference numbers related to customs documents (bill of lading, commercial invoice, packing list), and in the case of pallet loads – the SSCC-18 code in accordance with the GS1 standard enabling electronic identification of the logistic unit.

They constitute a separate category warning markings on packages regarding wood. The ISPM 15 standard requires marking each wooden element in the packaging (pallets, frames, wedges) with the IPPC symbol with the country code and manufacturer’s number, confirming thermal treatment or fumigation with methyl bromide. Australia, New Zealand, the USA and China apply phytosanitary controls at the border – lack of the ISPM 15 mark results in the detention of the cargo and costly quarantine. There are alternatives cardboard packagingwhich, as a material that is not wood within the meaning of the standard, is not subject to this obligation – which is one of their practical logistic advantages.

Companies like ATK-Packagingacting as manufacturer of cardboard packaging serving both the market Tychy packagingWhat cardboard packaging Bielskooffer structures tested according to ASTM D4169-16 level DC13 standards, simulating container transport conditions on transatlantic routes. Technical documentation provided by the manufacturer may be required by the cargo insurer or foreign recipient as evidence of compliance with the standards.

Environmental and recycling labels – obligations under EU law

The question is whether cardboard is paper in the context of waste segregation, is commonly asked and has practical significance for supply chain participants. The answer is clear: cardboard and cartons go into the blue container intended for paper and cardboard. These materials should not be placed in plastic bags – paper in bags it is more difficult to be processed by sorting plants, and the foil goes into the plastic stream, not paper. If reusable cardboard is no longer suitable for use, it should be flattened and placed loose in a container, not packed in a plastic bag.

From the perspective of the manufacturer and importer, the Packaging Directive 94/62/EC imposes an obligation to mark the packaging with a material code. For corrugated cardboard, the appropriate marking is PAP 20, for solid cardboard, PAP 21. The new PPWR (Packaging and Packaging Waste Regulation), which will come into force gradually by 2030, tightens these requirements, imposing the obligation to place QR labels leading to a digital product passport with information on the material composition and segregation instructions in the language of the destination country.

For packaging materials with the FSC or PEFC certificate, the ecological label is both a marketing tool and proof of compliance with ESG standards required by an increasingly large group of institutional recipients. It is worth remembering that the FSC certificate covers the entire supply chain (Chain of Custody) – the mere possession of it by the manufacturer does not entitle the manufacturer to place the FSC logo on the packaging unless it was agreed at the order stage and confirmed with an appropriate license.

Markings on cardboard packaging is a system that is at the same time a legal requirement, a logistics tool and an element of the manufacturer’s responsibility for cargo safety. Properly designed packaging integrates essential signs, manipulation signs and warning signs into a coherent whole that is clear to both a warehouseman in Poland and a port terminal employee in Shanghai or Los Angeles. Good manufacturer of cardboard packaging takes these requirements into account at the design stage – not as an addition, but as an integral element of the structure.

Companies looking for comprehensive design support industrial packaging compliant with national and international standards can take advantage of the offer ATK-Packaging (atk-opaowania.pl), a manufacturer with many years of experience in the export packaging segment packaging for sea transport.