Sustainability issues in packaging and why simple material swaps are not enough
Why packaging sustainability is a systems problem
The main sustainability issues in packaging are not solved by choosing one material and calling it green. Packaging still has to protect the product, prevent damage and waste, use resources efficiently, avoid hazardous substances, move through collection and sorting systems, and support a credible end-of-life route. A paper pack with a plastic barrier, a recyclable plastic tray with no local collection route, or a compostable pouch sent to landfill can all fall short.
For packaging teams, the practical conclusion is clear: sustainability has to be evaluated across the full packaging system. That includes source reduction, product protection, transport efficiency, recycled content, recyclability at scale, chemical safety, consumer instructions and regulatory exposure. For more coverage of packaging and environmental trends, see the sustainability section.
Waste generation and recycling performance remain uneven
Waste remains the most visible part of the packaging debate. In the United States, the U.S. Environmental Protection Agency’s latest national municipal solid waste facts and figures data for containers and packaging are from 2018. The data estimated 82.2 million tons of containers and packaging generated in municipal solid waste, equal to 28.1% of total generation. The overall recycling rate for containers and packaging was 53.9%, but performance varied sharply by material.
Corrugated boxes performed strongly in the EPA data, with a 96.5% recycling rate in 2018. Paper and paperboard containers and packaging as a broader category reached 80.9%. Plastic containers and packaging were much lower, at 13.6%, although PET bottles and jars and natural HDPE bottles performed better than many other plastic formats. This gap explains why sustainability discussions often focus on plastic, but it also shows why material averages can be misleading.
| Issue | What the data suggests | Packaging implication |
|---|---|---|
| Overall packaging waste | EPA reported 82.2 million tons of U.S. containers and packaging waste in 2018. | Waste prevention and right-sizing remain important, not just recycling. |
| Paper recovery | Corrugated boxes had a high reported recycling rate. | Fiber-based formats can work well when they stay clean and easy to sort. |
| Plastic recovery | Plastic containers and packaging had a much lower overall recycling rate. | Design must account for resin type, format, collection access and sorting economics. |
Globally, the pressure is larger than national recycling statistics. UNEP has warned that humanity was expected to consume more than 500 million tonnes of plastics in 2024, with a large share quickly becoming waste, and that plastic waste could approach 1.2 billion tonnes by 2060 under a business-as-usual scenario. These figures do not mean every plastic package is worse than every alternative. They do show why low-value, hard-to-recycle and unnecessary formats face growing scrutiny.
Regulation is turning broad goals into operating requirements
Packaging policy is moving from voluntary ambition to measurable duties. In the European Union, Regulation (EU) 2025/40 on packaging and packaging waste entered into force on 11 February 2025 and began applying in phases from 12 August 2026. The regulation is significant because it addresses prevention, recyclability, recycled content, labelling, reuse and extended producer responsibility within one framework.
Several milestones are especially relevant for companies that sell packaged goods into the EU. Member States must ensure separate collection of at least 90% by weight per year for single-use plastic beverage bottles and single-use metal beverage containers by 1 January 2029. From 2030, many plastic packaging formats will face minimum recycled content requirements, with higher targets later for 2040. Recyclability performance grades and design-for-recycling rules are also central to the new system.
In the United States, the picture is more fragmented. As of 2026, legal and industry summaries count seven states with packaging-specific extended producer responsibility laws: Maine, Oregon, Colorado, California, Minnesota, Maryland and Washington. The details differ by state, but the common direction is clear. Producers increasingly need reliable packaging material data, registration processes and funding mechanisms for end-of-life management.
At the global level, a harmonized plastics treaty remains unresolved. UNEP’s Intergovernmental Negotiating Committee process began after the March 2022 UN Environment Assembly resolution. The resumed fifth session in Geneva in August 2025 ended without consensus, a one-day INC-5.3 meeting took place on 7 February 2026 for organizational purposes, and the next formal session is scheduled for 13 to 24 March 2027. For packaging decision-makers, regional rules and buyer requirements will continue to drive action while global policy remains under negotiation.
Recyclable, recycled and compostable claims need proof
One persistent sustainability problem is the gap between design intent and real-world recovery. A package may be technically recyclable in a laboratory or pilot program but still fail in normal collection systems if consumers cannot access suitable facilities, sorting equipment does not identify it, or the material has little end-market demand.
The U.S. Federal Trade Commission’s Green Guides remain an important reference point for environmental marketing claims. They state that recyclable claims should be qualified when recycling facilities are not available to at least 60% of consumers or communities where the product is sold. They also state that compostable claims require competent and reliable scientific evidence that all materials in the product or package break down safely and in an appropriate time frame.
This is why broad claims such as “eco-friendly,” “green,” or “earth safe” create risk. Specific claims are stronger: a package may state a defined percentage of post-consumer recycled content, identify the material, or explain that a component is recyclable only where suitable collection programs exist. Standards can also help. ISO 18601 provides general requirements for packaging and the environment, while ASTM D6400 addresses labelling of plastics designed for aerobic composting in municipal or industrial facilities.
The distinction matters in procurement, design review and consumer communication: recyclable describes a potential end-of-life route, recycled content describes input material, and compostable describes a biological processing route under defined conditions. They are not interchangeable.
Material choices bring trade-offs
Paper and paperboard
Paper-based packaging benefits from familiar recycling streams and strong recovery for corrugated boxes. It can also communicate a lower-plastic profile to consumers. However, paper is not impact-free. It requires fiber, water, energy and transport, and its sustainability depends on responsible sourcing, lightweighting and recyclability after coatings, inks, adhesives and barrier layers are added. A paper package that cannot be separated from plastic or foil layers may not behave like ordinary paper in recycling systems.
Plastic
Plastic packaging can be lightweight, durable and effective at protecting food, medicines and consumer goods. Those functions matter because product damage and food waste carry their own environmental costs. The problem is that many plastic formats, especially flexible films, multilayer laminates, small items and dark or complex components, remain difficult to collect and recycle at scale. The result is a tension between strong performance during use and weak recovery after use. See also: BOX DESIGN.
Glass, metal and reusable formats
Glass and metal can be valuable in recycling systems, and refillable or reusable packaging can reduce single-use demand when return logistics are efficient. But weight, breakage risk, washing, reverse logistics and consumer participation all affect the outcome. Reuse works best when the system is intentionally designed around standardized containers, convenient return points, high return rates and enough trips to offset the extra handling.
Compostable packaging
Compostable packaging can make sense for specific foodservice or food-waste applications where it helps capture organics and where certified industrial composting access exists. It is less convincing as a general substitute for recyclable packaging in areas without composting infrastructure. If consumers place compostable plastics in conventional recycling, they may create contamination. If they place them in landfill, the composting benefit is largely lost.
Chemical safety and product protection are part of sustainability
Sustainable packaging is also about what is inside the material. On 28 February 2024, the U.S. Food and Drug Administration announced that grease-proofing substances containing certain PFAS were no longer being sold by manufacturers for food-contact use in the U.S. market. The FDA described these substances as having been used on paper and paperboard packaging for grease and water resistance in items such as fast-food wrappers, take-out paperboard containers, microwave popcorn bags and similar packaging.
This example matters because a sustainability strategy cannot focus only on carbon, weight or recyclability. Coatings, additives, colorants, adhesives and inks can affect food-contact safety, worker safety, compostability, recyclability and public trust. A lighter package that introduces problematic chemistry may create a different environmental or health concern. A recyclable package with unsafe food-contact migration would not be acceptable either.
At the same time, packaging must still protect the product. Underpackaging can increase damage, returns and food loss. In many categories, the environmental footprint of the packaged product is greater than the footprint of the package itself. That does not excuse wasteful packaging, but it does mean reduction should be tested against product protection, shelf life, shipping conditions and consumer use.
A practical way to prioritize packaging decisions
The strongest packaging sustainability programs start with a clear hierarchy rather than a preferred material. A useful decision path is:
- Eliminate unnecessary packaging first. Remove excess void fill, redundant layers, oversized cartons and decorative components that do not protect the product or improve use.
- Reduce weight and volume carefully. Lightweighting should not increase breakage, leakage, returns or food waste.
- Design for the recovery system that actually exists. Use materials, colors, labels, closures and adhesives that support local collection, sorting and reprocessing.
- Use recycled content where safe and suitable. Confirm food-contact rules, mechanical performance and supply reliability before making claims.
- Match compostability to composting access. Reserve compostable packaging for situations where it improves organics collection and can reach appropriate facilities.
- Document claims and decisions. Keep evidence for recycled content, recyclability access, compostability certification, sourcing and chemical restrictions.
This framework is more useful than a simple material comparison because it connects design choices to infrastructure, regulation and evidence. A package is not sustainable just because it uses a fashionable material. It is more sustainable when it reduces avoidable impacts while still protecting the product and fitting the end-of-life system available to the user.
Frequently asked questions
What are the biggest sustainability issues in packaging?
The biggest issues are waste generation, low recovery for some formats, overpackaging, fossil-based virgin material use, weak recycling infrastructure, chemical safety concerns, unclear consumer instructions and unsupported environmental claims. Climate impact also matters, but it should be evaluated alongside product protection and end-of-life outcomes.
Is paper always more sustainable than plastic?
No. Paper often has stronger recycling routes, especially for corrugated boxes, but it can require more mass for the same protection and may lose recyclability when combined with barrier coatings or laminates. Plastic can be lightweight and protective, but many formats have poor recovery. The better choice depends on function, sourcing, weight, recovery access and verified impacts.
What is the difference between recyclable and recycled content?
Recyclable means the package can enter a recycling system and be processed into a usable material under real conditions. Recycled content means the package includes material recovered from a previous waste stream. A package can be recyclable with no recycled content, or contain recycled content while still being difficult to recycle after use.
When does compostable packaging make sense?
Compostable packaging makes the most sense when it is certified, clearly labelled, used with food or organic waste, and accepted by local composting facilities. It is less useful when consumers lack composting access or when the package is likely to enter conventional recycling or landfill.
How should businesses prepare for packaging regulation?
Businesses should build accurate packaging data by material, weight, format and market; monitor EPR and recyclability rules in the regions where they sell; validate claims before using them; and design packaging that can meet future reporting, recycled content and design-for-recycling requirements. Legal details vary by jurisdiction, so compliance planning should be market-specific.
