Sustainable E-commerce Packaging: How Labels and Materials Can Reduce Your Footprint

Most conversations about sustainable e-commerce packaging focus on boxes and void fill. Businesses switch to recycled cardboard, drop the bubble wrap in favour of paper padding, and consider the job largely done.

The label gets overlooked.

This matters more than it sounds. A cardboard box with the wrong label on it cannot be recycled as cardboard. A paper-based shipping label with a polypropylene liner, a solvent adhesive, and a plastic laminate coating introduces multiple material types into what would otherwise be a clean recycling stream. At the scale most e-commerce businesses operate, the cumulative effect of that decision is not trivial.

This guide covers what UK e-commerce businesses should actually know about sustainable packaging choices, with particular focus on where labels fit into the picture and how small, practical decisions add up to a meaningful difference.

In this guide:

• Why labels are a bigger sustainability issue than most businesses realise

• Understanding label materials and their recyclability

• Thermal printing and its sustainability advantages

• Practical steps for more sustainable e-commerce packaging

• Quick-reference checklist

Why labels are a bigger sustainability issue than most businesses realise

Labels are composite products. A standard self-adhesive label has at minimum three components:

• A face material (the printed surface)

• An adhesive layer (which bonds it to the packaging)

• A release liner (the backing you peel away before application)

Each of these may be made from different materials, and each behaves differently in a recycling stream. The challenge for recycling facilities is separation. When a label's materials are incompatible with the packaging it is applied to, the whole package can be diverted from recycling entirely.

The UK Plastics Pact and various retailer-led initiatives have made this a compliance issue as much as an environmental one, with increasing pressure on brands and fulfilment operations to think through label compatibility with packaging materials.

The good news is that the choice of label does not have to be complicated, and switching to a more recyclable option often costs no more than staying with a less suitable one.

Understanding label materials and their recyclability

Paper labels on cardboard packaging

Paper labels applied to corrugated cardboard or paperboard boxes represent the most straightforward combination for recycling. Both the label and the packaging are paper-based, entering the same pulping process at a recycling facility without creating contamination problems.

CDM Labels' range of direct thermal labels are paper-based and produced without the need for ink cartridges or ribbons. Because thermal printing uses heat rather than ink, there are no solvent-based inks introduced to the label surface, which is a meaningful consideration when thinking about what happens to the label downstream.

A note on liners: Most release liners are silicone-coated, which currently makes them difficult to recycle through standard kerbside streams. Two practical ways to reduce liner waste:

• Buy labels in roll format rather than sheets, which generates less liner per label

• Order in quantities matched to your actual throughput to avoid unused labels going to general waste

Film labels on plastic packaging

If your operation ships in polypropylene or polyethylene mailer bags, a paper label creates an incompatibility. Paper labels on film packaging can interfere with the film recycling process and reduce the quality of the recovered material.

In this case, a film label that matches the substrate is the better choice. A polyethylene label on a polyethylene mailer keeps the material stream consistent. If you are shipping primarily in plastic mailers and currently using paper labels, this single change is worth reviewing.

The adhesive question

Permanent adhesives are used across the majority of shipping labels, and for good reason: a label that peels off in transit creates real operational problems. However, the chemistry of the adhesive affects recyclability:

• Solvent-based adhesives can interfere with paper pulping processes

• Water-based adhesives are generally more compatible with paper recycling streams and have become standard with many label manufacturers

If recyclability is a priority, it is worth asking your supplier specifically about adhesive chemistry. Any reputable supplier should be able to provide material data sheets on request.

For applications where the label needs to be removed by the end consumer (glass jars, reusable containers, refillable packaging), a peelable or removable adhesive is the right specification. CDM Labels stocks direct thermal labels with peelable adhesive, well suited to applications where clean removal matters.

Thermal printing and its sustainability advantages

One aspect of thermal label printing that is genuinely underappreciated from a sustainability perspective is the near-complete absence of consumables beyond the label itself.

A direct thermal label printer produces a finished, scannable label using heat alone. Compare this to the alternatives:

For businesses printing hundreds or thousands of shipping labels per month, eliminating ink cartridges and toner from the waste stream is a meaningful sustainability gain alongside a direct cost saving.

Thermal transfer printing, which uses a wax or resin ribbon to produce more durable labels, does introduce ribbon waste. For applications where durability is required (outdoor packaging, cold or wet storage conditions, long-term asset labelling) the trade-off is justified. For standard e-commerce shipping labels that only need to survive transit, direct thermal is typically the more sustainable and cost-effective specification.

CDM Labels' thermal label range covers both technologies, and the team can advise on which suits a specific application.

Practical steps for more sustainable e-commerce packaging

1. Match your label material to your packaging material

The single most impactful label decision a business can make. The principle is simple:

• Paper label on a paper or cardboard box: compatible for recycling

• Film label on a film mailer: compatible for recycling

• Paper label on a film mailer: creates contamination in both streams

Mismatched combinations undermine recyclability regardless of what any individual component is made of.

2. Right-size your labels

Larger labels than necessary waste material at source and add unnecessary weight to every shipment. For Royal Mail and courier services that charge by dimensional weight, reducing label dimensions where specification allows also has a direct cost benefit.

CDM Labels' direct thermal shipping labels are available in a wide range of standard sizes, making it straightforward to find a format that fits your packaging accurately without excess.

3. Consolidate what goes on the label

Businesses that print multiple separate labels per parcel (a shipping label, a returns label, a handling instruction label) may find that combining this information onto a single perforated label reduces total label usage per shipment.

CDM Labels stocks perforated direct thermal labels designed precisely for this purpose. One label instead of three is a straightforward material saving at scale.

4. Order the right format for your volume

Getting your label format right means fewer going unused and into general waste:

• High-volume, continuous operations: Large roll formats reduce handling time and packaging waste per label

• Variable or seasonal demand: Smaller rolls reduce the risk of unused labels expiring before use

• Mixed label types: Consider whether a single label format can consolidate what currently requires multiple different products

5. Be precise about sustainability claims

Terms like "biodegradable" and "compostable" are used loosely in label marketing, and UK consumer protection rules require that environmental claims be substantiated. If you make sustainability claims on your packaging, the label material needs to meet verified standards.

FSC-certified paper labels confirm that the paper originates from responsibly managed forests, which is a straightforward and verifiable claim that holds up under scrutiny. CDM Labels uses A-grade label stocks from leading material suppliers, and the team can provide material specification details for compliance or reporting purposes.

Quick-reference checklist

Before your next label order, work through this:

• [ ] Is my label face material compatible with my packaging substrate?

• [ ] Am I using a paper label on a film mailer? (If so, this needs reviewing)

• [ ] Do I know whether my adhesive is solvent-based or water-based?

• [ ] Am I printing multiple labels per parcel that could be consolidated into one?

• [ ] Are my labels right-sized, with no significant excess material?

• [ ] Am I ordering rolls rather than sheets to minimise liner waste?

• [ ] Can I substantiate any sustainability claims made on my packaging?

The broader picture: packaging as a system

A genuinely sustainable packaging approach treats the box, void fill, tape, and label as a system rather than a collection of independent decisions. Switching one element while leaving incompatible materials in place elsewhere limits the benefit of the change.

For most UK e-commerce businesses, the most practical starting point is a packaging audit: listing every material that leaves the building on each shipment and checking whether the combination creates recycling barriers. Labels are often the last thing on that list, but they are frequently the component that determines whether everything else can be recycled as intended.

If you are reviewing your packaging specification and want to understand what label options are compatible with your current materials, CDM Labels' team is available to advise. We supply shipping labels, direct thermal labels, address labels and a wide range of specialist label formats to businesses across the UK, stocking from A-grade material suppliers so specifications are available when you need them.

Browse the full label range at CDM Labels or get in touch with the team directly to discuss which label specification suits your packaging.