Look at any box that has arrived at your home: a broken glass, two arrows pointing upwards, an umbrella with raindrops... These drawings are not mere decorations. They are a language — the language your package uses to communicate with all the hands it will pass through.
And it's important to speak it well. A clear and well-placed symbol prevents bumps, crushed boxes, and returns that no one wants to deal with.
This is our guide to packaging symbols: what each one means, which ones are mandatory, and how to put them on your boxes. If you're looking for "fragile" warning tape, you'll find it in the packaging tape section.
What packaging symbols are for
A package passes through many hands: the warehouse worker, the sorting conveyor belt, the delivery driver loading the van at seven in the morning. No one is going to read a manual about your box. A pictogram, however, is understood in a second and in any language.
The symbols serve two purposes: some indicate how to handle the box (fragile, this side up, do not stack) and others inform what to do with the packaging afterwards (recycling and environment). Let's look at both groups.
Handling symbols: those that prevent breakage
These are from the ISO 780 standard, which standardizes the graphic marking of goods. These are the ones you will use most often:
| Symbol | Meaning | When to use it |
|---|---|---|
| Broken glass | Fragile, handle with care | Glass, ceramics, electronics, artwork |
| Two arrows pointing up | This side up: the box must travel vertically | Liquids, plants, paintings and mirrors, motorized appliances |
| Umbrella with drops | Protect from moisture | Textiles, electronics, food, long journeys |
| Crossed-out stacked boxes | Do not stack anything on top | Boxes that cannot bear weight on top |
| Number on stacked boxes | Maximum stacking allowed | When the box can be stacked, but with a limit |
| Crossed-out cutter | Do not open with a knife | Contents glued to the top: textiles, covers, sheets |
An honest nuance: the symbol helps, but it doesn't work miracles. A broken glass doesn't turn a flimsy box into a safe one. If you're sending something truly delicate — a painting, a mirror, a dinnerware set — always combine it with good internal packaging. Here's our step-by-step guide on how to pack a painting or mirror for transport.
Recycling and environmental symbols
The second group addresses not the carrier, but the recipient of the package and waste management systems:
- Mobius loop (three arrows in a triangle): the material is recyclable. The most universal of all.
- 20 PAP symbol: identifies corrugated cardboard. If your boxes have it, you are indicating exactly what material it is and which bin it goes into. We've dedicated a complete guide to it: the 20 PAP symbol and the PPWR regulation.
- Green Dot: indicates that the packer participates in a packaging waste management system (in Spain, Ecoembes).
- Figure throwing packaging into a bin: a reminder to dispose of the packaging in its proper container. Voluntary, but very common.
This block is currently undergoing a transformation: the European PPWR regulation will harmonize packaging labeling across the EU in phases. If you sell packaged products, you might be interested in our PPWR guide. And to complete the cycle, here's how cardboard boxes are recycled.
Which symbols are mandatory?
Handling symbols (fragile, arrows, moisture) are voluntary: no regulation forces you to include them, although carriers recognize them and insurance companies appreciate them. Our recommendation: use them when they provide real information. Marking everything as fragile ultimately has the opposite effect.
Environmental symbols depend on the regulations of each country and the type of packaging — and with the PPWR, they will be harmonized and become mandatory in phases across the EU. It's advisable to be proactive here.
How to put symbols on your boxes
Three approaches, depending on your volume:
- Printed tape. The quick option: seal and mark at the same time. Ideal for SMEs and e-commerce. You can find fragile tape in our tape section.
- Adhesive labels. Flexible and inexpensive, perfect if you use different symbols depending on the order.
- Printing on the box itself. For large runs, it pays to print the symbols directly on the cardboard using flexography. We explain how it works (and what it costs) in what a printing plate is.
And where do they go? On at least two adjacent sides of the box, in the upper corner, and visibly sized — about 10 cm works well for medium-sized boxes. At the pallet level, the symbols are also placed on the outside of the entire unit. If you're confused about the levels, here we explain the difference between primary, secondary, and tertiary packaging.
Frequently Asked Questions
Where are the symbols placed on a box?
On at least two adjacent sides, preferably in the upper corner, in a dark color on a light background. The idea is for them to be visible without turning the box, no matter how the carrier leaves it.
Does marking "fragile" guarantee better handling of my package?
It doesn't guarantee it — parcel services move thousands of items per hour. It's an extra layer of security, and it works best combined with internal padding and a box appropriate for the weight. The packaging protects; the symbol warns.
What symbol does a recyclable cardboard box have?
The Mobius loop and, if you want material precision, the 20 PAP code, which identifies corrugated cardboard. All TeleCajas boxes are made from recyclable cardboard.
Can I print my own symbols?
Yes. ISO 780 pictograms are free to use: you can print them on labels or order custom tape and boxes. For large runs, flexographic printing with a printing plate is the most cost-effective per unit.
Mark well, pack better
At TeleCajas, we help you with both: boxes in over 40 sizes and tape to mark them, with delivery in 24-48 hours to mainland Spain, the Balearic Islands, and Portugal, free for orders over €50. Any questions, via WhatsApp: +34 665 53 23 58.
