How recycled content is transforming flexible packaging for sustainability
Smart questions and practical answers for packaging teams, brand owners, converters, and sustainability leaders
Flexible packaging is entering a new phase.
For many years, sustainability discussions focused mainly on reducing packaging weight, improving recyclability, replacing difficult-to-recycle structures, and lowering the environmental footprint of packaging systems.
Those priorities still matter.
But one question is becoming increasingly important:
How much recycled content can flexible packaging safely, technically, and responsibly include?
This question is not simple.
Recycled content can help reduce dependence on virgin fossil-based plastic, support circular economy targets, and strengthen packaging sustainability claims. However, flexible packaging is one of the most technically demanding packaging formats. It must protect products, maintain shelf life, seal correctly, run on commercial lines, meet food-contact rules, support brand quality, and increasingly meet regulatory expectations.
This creates a serious challenge.
Packaging teams cannot simply add recycled content and assume the structure will perform.
We aim to approach every problem by asking better questions.
What type of recycled content is being used?Is it post-consumer recycled content or post-industrial recycled content?Is it mechanically recycled or chemically recycled?Is it suitable for food-contact applications?Where is it placed in the packaging structure?
How does it affect sealing, barrier performance, stiffness, clarity, odor, color, migration, and processing?Can the sustainability claim be supported with evidence?Can the structure still protect the product?Can the packaging still support recyclability direction after recycled content is added?
These are no longer theoretical questions.
They are becoming core packaging development questions.
In Europe, the Packaging and Packaging Waste Regulation is pushing the market toward packaging that is recyclable by design and toward safely increasing the use of recycled plastics in packaging. The European Commission states that one of the objectives is to make all packaging on the EU market recyclable in an economically viable way by 2030 and to safely increase the use of recycled plastics in packaging.
That means recycled content is no longer just a sustainability option.
It is becoming part of the future operating model for packaging.
But the science matters.
The structure matters.
The product matters.
And the claim must be supported.
What does recycled content mean in flexible packaging?
Recycled content refers to material that has been recovered, processed, and reintroduced into a new product instead of being made entirely from virgin raw material.
In packaging, recycled content usually falls into two broad categories:
Post-industrial recycled content, often called PIR, comes from manufacturing or converting waste. This may include trim, edge waste, offcuts, start-up waste, or other clean material generated during production. PIR can be relatively consistent because the material source is often known and controlled.
Post-consumer recycled content, often called PCR, comes from packaging or plastic products that have already been used by consumers or businesses and collected after use. PCR is often more important for circular economy goals because it helps create demand for material recovered from real waste streams. It is also more complex because post-consumer waste can vary in quality, contamination level, color, odor, polymer type, additive content, and processing history.
For sustainability communication, PCR often carries more strategic value because it demonstrates that material from the waste stream is being brought back into use. However, PCR also requires stricter technical control, especially when packaging is used for food, medical, pharmaceutical, or sensitive consumer goods.
This is where recycled content becomes a technical subject, not only a marketing subject.
A packaging structure with recycled content must still do the job of packaging.
• It must protect the product.It must preserve quality.
• It must support shelf life.
• It must run through converting and filling lines.
• It must seal correctly.
• It must comply with relevant safety and regulatory requirements.
• It must support responsible sustainability claims.
Recycled content only creates value when performance, safety, and evidence remain intact.
Why is recycled content becoming more important?
The importance of recycled content is being driven by several forces at the same time.
Regulation is one driver.
In the EU, the PPWR is designed to reduce packaging waste, improve recyclability, and support recycled plastic use. The European Commission’s packaging waste objectives include making all packaging on the EU market recyclable in an economically viable way by 2030 and safely increasing recycled plastics in packaging.
Food-contact regulation is another driver.
For recycled plastics intended to come into contact with food, the regulatory framework is stricter because consumer safety must be protected. EFSA notes that new EU rules for recycled plastic materials and articles intended to come into contact with foods came into force on 10 October 2022 under Commission Regulation (EU) 2022/1616.
Brand commitments are another driver.
Many brand owners have made public sustainability commitments around recyclable packaging, reduced virgin plastic use, recycled content, lower carbon impact, circularity, and packaging waste reduction. Those commitments require technical solutions that can be scaled commercially.
Retailer expectations also matter.
Retailers increasingly ask for packaging data, recyclability information, recycled content information, documentation, and credible claims. This creates pressure across the supply chain.
Consumer perception is another factor.
Consumers may not understand the full science of flexible packaging, but they increasingly expect packaging to show progress. Recycled content can be a visible signal of circularity, especially when the claim is clear and credible.
Finally, recycled content can support material efficiency and resource conservation by reducing the need for virgin plastic in selected structures.
But recycled content is not automatically sustainable in every case.
The real question is not:
“Can we add recycled content?”
The more useful question is:
“Can we add the right recycled content, in the right structure, for the right application, while maintaining product protection, safety, performance, and credible documentation?”
That is the question packaging experts should be asking.
How does recycled content transform flexible packaging?
Recycled content changes flexible packaging in three major ways.
First, it changes material sourcing.
Instead of relying only on virgin polymers, packaging structures can include recycled polymers from controlled recycling streams. This shifts packaging from a linear model toward a more circular material model.
Second, it changes structure design.
Packaging engineers must decide where recycled content can be used without compromising performance. In flexible packaging, this may mean placing recycled content in non-food-contact layers, using it in core layers, combining it with virgin material, or designing multilayer structures where the recycled layer is functionally protected.
Third, it changes claim responsibility.
If a pack includes recycled content, the claim must be accurate. The percentage, material type, source, certification, mass-balance approach where relevant, and food-contact suitability must be communicated carefully.
This is why recycled content does not only affect procurement.
It affects R&D, packaging development, quality, regulatory affairs, marketing, ESG reporting, sustainability, technical sales, and supplier selection.
For flexible packaging, recycled content is not a single material decision.
It is a system decision.
What are the main types of recycled plastic used in flexible packaging?
The most relevant recycled plastics for flexible packaging depend on the application, region, collection system, recycling technology, and packaging structure.
Common material discussions include recycled PE, recycled PP, recycled PET, and sometimes recycled polyamide or other specialty streams. However, flexible packaging is often based on PE and PP because these materials are widely used for films, sealants, pouches, wraps, bags, and mono-material structures.
Recycled PE can be relevant for flexible films, non-food-contact layers, industrial packaging, carrier bags, shipping films, hygiene outer packaging, and selected mono-PE development pathways.
Recycled PP may become increasingly important for PP-based flexible packaging, including Mono-PP structures, retortable packaging development, and PP-based recyclable-direction packaging. However, high-quality recycled PP suitable for demanding flexible applications can be technically challenging.
Recycled PET is more established in rigid packaging and trays, and recycled PET has significant relevance in beverage bottles and thermoformed packaging. In flexible packaging, PET-based laminates exist, but PET/PE or PET/aluminum/PE combinations can complicate recyclability when combined with other material families.
The key point is that recycled content must be matched to the structure.
A recycled polymer is not automatically suitable because it has the same name as the virgin polymer.
Material history matters.
Contamination matters.
Molecular weight distribution matters.
• Odor matters.
• Color matters.
• Additives matter.
• Mechanical properties matter.
• Heat-seal performance matters.
• Food-contact suitability matters.
• Traceability matters.
That is why packaging teams need technical support, not only recycled-content availability.
Mechanical recycling versus chemical recycling: what is the difference?
Mechanical recycling is the most established route for many plastic packaging streams.
It generally involves collecting, sorting, washing, shredding, melting, filtering, and reprocessing plastic into pellets or flakes that can be used again. Mechanical recycling can be efficient when the input stream is clean, sorted, and compatible.
However, mechanically recycled plastic can face limitations in demanding flexible packaging applications. It may contain contamination, polymer mix, odor, color variation, gels, degraded polymer chains, or inconsistent processing behavior. These issues can affect film extrusion, sealing, appearance, mechanical strength, and regulatory suitability.
Chemical recycling, sometimes called advanced recycling, breaks plastic waste down into smaller chemical components or feedstocks that can be used to produce new polymers. In some cases, chemical recycling can create recycled feedstock that is closer to virgin-quality polymer. This may be useful for applications where mechanical recycling cannot deliver the required purity or food-contact suitability.
However, chemical recycling is not a simple solution either. It can involve higher energy demand, complex infrastructure, cost challenges, and questions around yield, allocation, certification, and environmental impact. Any claim around chemically recycled content must be carefully substantiated.
The practical answer is not to treat one route as universally better.
The smarter question could be:
“Which recycling route provides the right material quality, safety profile, traceability, scalability, environmental evidence, and regulatory suitability for this packaging application?”
For some applications, mechanical recycling may be appropriate.
For others, chemically recycled feedstock may be more suitable.
For highly sensitive food-contact flexible packaging, the answer may depend on approved processes, functional barriers, material placement, and regulatory frameworks.
What are the biggest technical challenges with recycled content in flexible packaging?
Flexible packaging is difficult because it is thin, lightweight, highly engineered, and often multifunctional.
Recycled content can affect many properties.
Sealability
Many flexible packs depend on a reliable seal. If recycled content affects melt behavior, contamination level, coefficient of friction, seal initiation temperature, hot tack, or seal strength, pack integrity may be at risk.
A weak seal can cause leakage, contamination, product waste, and failed shelf-life performance.
Barrier performance
Recycled content may influence oxygen barrier, moisture barrier, aroma barrier, or grease resistance depending on where it is used and how it affects the full structure.
For high-barrier packaging, recycled content must be evaluated alongside OTR, WVTR, coating integrity, layer thickness, lamination, and final pack design.
Mechanical strength
Recycled polymers can have different tensile strength, elongation, puncture resistance, tear resistance, stiffness, and flex-crack behavior compared with virgin polymers.
This matters for pouches, sachets, lidding films, heavy packs, sharp products, frozen products, and transport conditions.
Optical quality
Color, haze, gloss, transparency, and print appearance can change when recycled content is added. This may be acceptable in some applications but not in premium brand packaging or transparent packaging.
Odor and sensory risk
PCR materials may carry odor or residual substances. For food, pet food, cosmetics, and sensitive consumer goods, odor can be a serious quality issue.
Process stability
Recycled materials may process differently during extrusion, lamination, coating, printing, slitting, pouch making, and filling. This can affect line speed, waste rate, gauge control, web handling, and commercial reliability.
Regulatory suitability
Not all recycled content is suitable for food contact. In Europe, recycled plastic food-contact materials are subject to specific rules. EFSA highlights that EU rules for recycled plastic materials intended to come into contact with food came into force under Regulation (EU) 2022/1616.
Claim substantiation
A recycled-content claim must be supported by evidence. Teams need documentation showing source, percentage, chain of custody, certification, regulatory status, and application suitability.
This is why recycled content must be developed through testing, not assumption.
Where can recycled content be used in flexible packaging structures?
The answer depends on the application.
In non-food packaging, recycled content may be easier to use because food-contact requirements do not apply. Examples may include industrial packaging, shipping films, secondary packaging, hygiene outer wraps, e-commerce packaging, pet care non-contact layers, garden products, and some household applications.
In food packaging, recycled content is more complex. It may be used in non-food-contact layers, behind functional barriers, in chemically recycled feedstock systems, or in applications where the material and process are approved for food contact.
In medical and pharmaceutical packaging, recycled content may be more restricted because safety, cleanliness, regulatory control, and validation requirements are high.
For flexible packaging, a common development approach is to use recycled content in an internal or core layer where it can contribute to material circularity without directly contacting the product. However, this must still be validated.
The structure must answer practical questions:
• Is the recycled layer protected?
• Does it affect seal performance?
• Does it affect barrier performance?
• Does it affect stiffness or puncture resistance?
• Does it change processing behavior?
• Does it create odor or migration risk?
• Can the final pack still be recycled?
• Is the claim clear and defensible?
The placement of recycled content is as important as the percentage.
Does recycled content automatically make packaging more sustainable?
No.
Recycled content can support sustainability, but it is not automatically the best solution in every structure.
A pack with recycled content that fails early, shortens shelf life, causes product waste, or creates higher converting waste may not deliver a better sustainability result.
Sustainability must be evaluated across the full system.
This includes:
• Material sourcing
• Recycled-content percentage
• Energy useProcessing efficiency
• Product protection
• Shelf-life impact
• Transport efficiency
• Waste reduction
• Recyclability after use
• Collection and sorting infrastructure
• Food safety
• Regulatory compliance
• Claim credibility
For food packaging, product protection is especially important.
The environmental impact of wasted food can be far greater than the impact of the packaging itself. Therefore, packaging sustainability cannot be separated from shelf-life protection and product safety.
This is why recycled content should be treated as one tool in a larger packaging strategy.
It should work together with downgauging, recyclable structure development, high-barrier films, mono-material design, aluminum foil alternatives, optimized pack formats, and responsible material selection.
The best sustainable packaging solution is not always the one with the highest recycled-content percentage.
It is the one that delivers the right balance of product protection, material efficiency, recyclability direction, regulatory suitability, and verified environmental progress.
How does recycled content affect mono-material packaging?
Mono-material packaging is designed around one dominant material family, such as PE-based or PP-based structures.
This can support recyclability direction because the structure avoids combining too many incompatible material families.
Recycled content can strengthen this direction by creating demand for recycled material from the same polymer family.
For example, a Mono-PE structure may be designed to use PE-based layers and potentially incorporate recycled PE in selected layers where appropriate.
A Mono-PP structure may be designed around PP-based materials and potentially incorporate recycled PP where performance and regulatory requirements allow.
However, mono-material does not automatically mean easy.
Adding recycled content to a mono-material structure can affect sealing, stiffness, barrier, appearance, and processing. In high-barrier mono-material packaging, the challenge is even greater because the structure must combine recyclability direction with barrier performance.
For demanding applications such as coffee, snacks, pet food, ready meals, sauces, soups, and retort packaging, recycled content must be evaluated carefully.
This is especially true when the pack must deliver oxygen barrier, moisture barrier, aroma protection, puncture resistance, heat resistance, or retort suitability.
The smarter question is:
“Can recycled content be introduced without weakening the mono-material structure’s ability to protect the product and support the intended recyclability pathway?”
That is a development question.
Not a marketing question.
How does recycled content affect high-barrier packaging?
High-barrier packaging is designed to protect sensitive products from oxygen, moisture, aroma loss, contamination, and quality degradation.
When recycled content is introduced, the barrier strategy must be reviewed.
If recycled content is placed in a structural layer, the barrier layer may remain unchanged. But the full structure can still be affected by mechanical performance, adhesion, layer uniformity, thermal stability, and processing conditions.
If recycled content is placed near or within a functional barrier system, the technical review becomes more complex.
Packaging teams need to ask:
• What OTR does the product require?
• What WVTR does the product require?
• Does the recycled content change film morphology?
• Does it affect coating adhesion?
• Does it affect lamination quality?
• Does it affect seal integrity?
• Does it affect flex-crack resistance?
• Does it affect odor or migration risk?
• Does it survive the filling and storage conditions?
High-barrier packaging cannot be evaluated by recycled-content percentage alone.
The full structure must be validated.
That is where advanced barrier films, coatings, vapor-deposited technologies, GL BARRIER film options, and structure-specific testing become important.
What smart questions should packaging experts ask before using recycled content?
For experts with 15 to 20 years in packaging, the questions need to go beyond basic sustainability language.
Here are the questions that separate a recycled-content concept from a commercially viable packaging solution.
1. What is the source of the recycled content?
Is it PIR or PCR?Is the source controlled?Is the waste stream traceable?
Is it consistent enough for film extrusion and conversion?
2. What recycling route was used?
Was the material mechanically recycled or chemically recycled?What does that mean for purity, performance, cost, regulatory status, and claim language?
3. What polymer family is being used?
Is it PE, PP, PET, or another material?Does it align with the intended packaging structure and recyclability pathway?
4. Where is the recycled content placed?
Is it in a core layer, outer layer, sealant layer, non-contact layer, or behind a functional barrier?
5. Is the application food-contact sensitive?
Does the material meet applicable food-contact requirements?
Is there an approved process or functional barrier strategy where relevant?
6. What performance is at risk?
• Seal strength?
• Hot tack?
• Puncture resistance?
• Clarity?
• Odor?
• Barrier performance?
• Line speed?
• Print quality?
• Coefficient of friction?
• Lamination bond strength?
7. What testing is required?
OTR, WVTR, seal strength, tensile, puncture, tear, migration, sensory, drop testing, shelf-life testing, hot-fill or retort testing, line trials, and aging studies may all be relevant.
8. How will the claim be documented?
Can the recycled-content percentage be verified?Is certification needed?Is chain-of-custody evidence available?Is the claim understandable and defensible?
9. Does the structure remain recyclable?
Does adding recycled content affect sorting, recycling quality, color, odor, or polymer compatibility?
10. Is the solution commercially scalable?
Can supply be guaranteed?
Can cost be managed?
Can the structure run consistently across production sites and filling lines?
These questions are not barriers to innovation.
They are the pathway to credible innovation.
What role does recycled content play in PPWR-ready packaging development?
PPWR-ready packaging development is about preparing packaging structures for a market where recyclability, waste reduction, recycled content, labeling, and documentation will matter more.
The PPWR is part of a broader EU effort to reduce packaging waste, make packaging more circular, and increase recycled plastics in packaging. The European Commission identifies recyclable packaging by 2030 and safe use of recycled plastics in packaging as key objectives.
For packaging teams, this creates a practical roadmap.
• Design for recyclability.
• Reduce unnecessary complexity.Use recycled content where technically and legally suitable.
• Support claims with data.
• Prepare documentation.
• Work with suppliers who understand both performance and regulation.
Recycled content is one part of that roadmap.
But it must be integrated into the full design.
A PPWR-ready flexible packaging structure should not only include recycled content. It should also be designed for realistic collection, sorting, recycling, product protection, and commercial use.
This is why TOPPAN Films focuses on technical packaging development, advanced barrier film solutions, mono-material structures, and application-specific support.
Because the future of flexible packaging will require more than ambition.
It will require validated structures.
How can recycled content support ESG reporting and brand trust?
Recycled content can help brands show measurable progress.
For ESG reporting, recycled-content data can support metrics around material circularity, virgin plastic reduction, resource efficiency, and packaging sustainability.
But the data must be reliable.
A vague statement such as “made with recycled plastic” is weaker than a verified claim with clear material information, percentage, scope, certification, and application context.
Brand trust depends on the strength of the evidence.
Packaging claims should answer:
• What percentage is recycled content?
• Is it PCR or PIR?
• Which component includes it?Is the percentage calculated by weight?
• Is the material certified?Is it food-contact approved where relevant?
• Does the claim apply to the full pack or one layer?
• Does the final pack remain recyclable?
This matters because sustainability claims are under more scrutiny than ever.
Packaging can build brand trust when the claim is specific, measurable, and technically supported.
It can damage trust when the claim is vague, overstated, or unsupported.
The future of sustainable flexible packaging belongs to companies that can connect material innovation with transparent evidence.
What are the risks of poor recycled-content implementation?
The biggest risk is thinking that recycled content is only a procurement decision.
It is not.
Poor implementation can create serious problems:
• Reduced seal strengthIncreased leakage
• Higher waste during converting
• Lower filling-line efficiency
• Unstable film extrusionInconsistent thickness
• Poor print appearanceIncreased odor
• Food-contact risk
• Reduced shelf life
• Weak claims
• Regulatory exposure
• Customer complaints
• Reputational damage
For demanding flexible packaging, the cost of failure can be high.
That is why recycled content should be introduced through controlled development.
Start with the product.Define the required performance.Select the material route.Design the structure.Test the structure.Validate the claim.Scale only when the evidence is strong.
That is the responsible path.
How should packaging teams begin?
The most practical starting point is not to ask for the highest possible recycled-content percentage.
The better starting point is to define the application.
• What product is being packed?
• What is the shelf-life target?
• What are the oxygen and moisture requirements?
• Is the product fatty, acidic, dry, wet, aromatic, powdered, sharp, heavy, or heat-treated?
• Is it food-contact sensitive?
• Does it require retort, hot fill, freezing, or sterilization?
• What recycling pathway is intended?
• What sustainability claim is desired?
• What evidence will be needed?
Once those questions are answered, the recycled-content strategy can be designed.
This may involve:
• Recycled PE in selected layers
• Recycled PP in selected layers
• Chemically recycled feedstock
• Mechanically recycled content in non-contact applications
• Functional barrier structures
• Mono-material development
• Advanced coating or barrier film solutions
• Hybrid structures during transition
• Supplier-certified materials
• Pack-level testing
The right solution depends on the product and performance requirements.
There is no universal recycled-content answer.
There is only responsible structure development.
Why TOPPAN Films should be part of the technical conversation
Recycled content is transforming flexible packaging.
But transformation only works when sustainability and performance move together.
TOPPAN Films can support packaging teams exploring the next generation of flexible packaging structures, including recyclable high-barrier packaging, mono-material packaging, GL BARRIER film options, aluminum foil alternatives, barrier performance targets, and PPWR-ready packaging development.
For companies with serious packaging goals, the challenge is not only to use recycled content.
The challenge is to use it intelligently.
That means understanding the product, the structure, the barrier requirements, the filling process, the regulatory context, the recyclability pathway, and the claim that will eventually appear in market-facing communication.
TOPPAN Films can help teams move from broad sustainability ambition to practical packaging development.
That includes technical discussion around:
• Material structure selection
• Barrier-film options
• OTR and WVTR requirements
• Mono-material packaging direction
• Recycled-content integration
• Application-specific testing
• Datasheets and samples
• Commercial feasibility
• Packaging claim support
• Sustainability and regulatory alignment
This is where the market is going.
Packaging development is becoming more technical, more regulated, more transparent, and more evidence-based.
The companies that succeed will not be the ones making the broadest sustainability claims.
They will be the ones building packaging structures that can prove those claims.
Recycled content is transforming flexible packaging, but evidence must lead the way
Recycled content is changing the future of flexible packaging.
It is helping the industry move away from linear material use and toward more circular packaging systems. It can support reduced virgin plastic use, stronger ESG reporting, better brand trust, and progress toward regulatory and sustainability goals.
But recycled content is not a shortcut.
It is not automatically suitable for every structure.It is not automatically food-contact approved.It is not automatically recyclable after use.It is not automatically better if it weakens product protection.It is not automatically credible without documentation.
The more useful question is not:
“How much recycled content can we claim?”
The helpful question is:
“How can recycled content be responsibly integrated into a flexible packaging structure that protects the product, performs commercially, supports recyclability direction, meets regulatory requirements, and can be validated with data?”
That is where recycled content becomes real packaging innovation.
Not just a claim.
Not just a number.
A technical pathway toward more responsible flexible packaging.
The TOPPAN Packaging team is ready to support your business
If your team is exploring recycled content in flexible packaging, do not evaluate recycled material in isolation.
Build the packaging structure around the product.Validate performance with data.Understand the regulatory and food-contact context.Support every sustainability claim with clear material information.And work with a technical partner who understands high-barrier flexible packaging, mono-material development, and commercial packaging performance.
Speak with TOPPAN Films and TOPPAN Packaging Czech s.r.o. about recycled-content strategies, GL BARRIER film options, recyclable high-barrier flexible packaging, Mono-PP and Mono-PE structures, aluminum foil alternatives, OTR and WVTR targets, datasheets, samples, and application-specific packaging development.
Contact TOPPAN Packaging Czech s.r.o.: toppancz@toppan.com
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