Food-Contact Recycled Plastics in Flexible Packaging: What EU Packaging Teams Need to Know
Why material placement, functional barriers, safety evidence, and regulatory clarity matter
Recycled content is becoming one of the most important sustainability topics in flexible packaging.
For packaging teams, brand owners, converters, and sustainability leaders, the pressure is clear. Reduce virgin plastic use. Improve circularity. Prepare for PPWR-driven packaging expectations. Support ESG reporting. Respond to retailer demands. Build packaging structures that can show measurable environmental progress.
But when recycled plastics are used in food-contact flexible packaging, the discussion becomes more complex.
This is not only a sustainability question.
• It is a food-safety question.
• It is a regulatory question.
• It is a material-science question.
• It is a structure-design question.
• It is a documentation question.
The critical issue is simple:
Not every recycled plastic is suitable for food-contact use.
That does not mean recycled content has no role in food packaging. It means packaging teams need to understand what is technically possible, legally sensitive, and commercially realistic before recycled content becomes part of a flexible packaging structure.
In the EU, food-contact materials are governed by a general safety principle: materials and articles intended to come into contact with food must be sufficiently inert so that substances do not transfer to food in quantities that could endanger human health, cause an unacceptable change in food composition, or deteriorate organoleptic properties. This principle is set out in Regulation (EC) No 1935/2004.
For recycled plastic food-contact materials, the risk profile is different from virgin plastics. EFSA explains that recycled plastic food-contact materials can pose risks to human health because of possible contamination from previous use and/or from other waste. EFSA also notes that new EU rules for recycled plastic materials and articles intended to come into contact with food came into force on 10 October 2022 under Commission Regulation (EU) 2022/1616.
That is why food-contact recycled plastics require a more disciplined technical conversation.
The better question is not:
“Can we use recycled content in food packaging?”
The more useful question is:
“Where, how, and under what evidence framework can recycled content be responsibly used in a flexible packaging structure without compromising food safety, product protection, processing performance, or claim credibility?”
That is the question this article answers.
Why food-contact recycled plastics are different from virgin plastics
Virgin plastics used in food-contact packaging are manufactured from controlled raw materials under defined conditions. They still require regulatory compliance, migration assessment where applicable, good manufacturing practice, and supporting documentation. But the material history is controlled from the beginning.
Recycled plastics are different.
A recycled plastic has a previous life.
It may have been used for food packaging, non-food packaging, household products, industrial packaging, personal care products, cleaning products, agricultural films, logistics packaging, or unknown applications. It may have been exposed to inks, adhesives, labels, residues, contaminants, odor sources, non-intentionally added substances, degradation products, or polymer mixtures.
This previous life matters.
A mechanically recycled PCR stream can vary in color, odor, molecular weight distribution, polymer purity, additive content, contamination profile, thermal history, and processing behavior. Those variables can influence extrusion, film appearance, sealing, organoleptic risk, migration risk, mechanical performance, and commercial consistency.
In food-contact packaging, the main question is not whether recycled plastic can be processed into film.
The main question is whether it can be used safely and legally in the intended food-contact application.
That depends on:
• The source of the recycled material
•The recycling process
• The decontamination efficiency
•The intended use
• The food type
•The contact time and temperature
• The layer position
• The presence or absence of a functional barrier
• The migration profile
• The supporting documentation
• The applicable regulatory framework
For flexible packaging, the challenge becomes sharper because the packaging is usually thin, highly engineered, and often multilayered. Small changes in material quality or layer structure can affect the final pack.
The EU regulatory foundation: food safety comes first
Food-contact packaging must be safe before it can be sustainable.
That principle should guide every recycled-content decision.
In the EU, Regulation (EC) No 1935/2004 provides the general framework for food-contact materials. Its underlying principle is that materials intended to come into contact with food must be sufficiently inert and must not transfer substances to food in quantities that could endanger health, cause unacceptable composition changes, or deteriorate organoleptic properties.
Plastic food-contact materials are also subject to specific EU rules, including Regulation (EU) No 10/2011 on plastic materials and articles intended to come into contact with food. The European Commission identifies food-contact materials as a chemical safety area and explains that specific EU measures exist for plastics and other materials.
For recycled plastics, Commission Regulation (EU) 2022/1616 is central. EFSA states that the new EU rules for recycled plastic materials and articles intended to come into contact with food came into force on 10 October 2022, and EFSA’s scientists assess the safety of recycling processes for use in food-contact materials.
For packaging teams, this means recycled-content discussions must include regulatory affairs early.
• Do not wait until the material is already selected.
• Do not wait until artwork is approved.
• Do not wait until the sustainability claim is written.
• Do not wait until the commercial launch date is fixed.
Food-contact suitability needs to be considered at the start of structure development.
What makes recycled plastic food-contact safety difficult?
The core concern is contamination.
EFSA highlights that recycled plastic food-contact materials can pose risks because of contamination with substances from previous use and/or other waste.
This matters because contaminants may not be obvious. They may not affect appearance. They may not be visible in the film. They may not be known from the original resin specification. They may come from misuse, cross-contamination, product residues, printing systems, adhesives, sorting errors, or non-food packaging entering a recycling stream.
The technical risks include:
Migration risk
Substances may migrate from packaging into food depending on concentration, molecular size, diffusion behavior, layer thickness, contact time, contact temperature, food type, and barrier properties.
NIAS risk
Non-intentionally added substances may arise from degradation, side reactions, impurities, contaminants, or processing history. These are particularly important in recycled material streams because the input material may have unknown history.
Organoleptic risk
Odor or taste transfer can make food unacceptable even when toxicological risk is not the only concern. For coffee, snacks, dairy powders, chocolate, pet food, dry foods, and aromatic products, odor control is critical.
Polymer purity
Risk If the recycled stream includes incompatible polymers, adhesives, labels, coatings, inks, or residues, processing stability and final film performance may suffer.
Performance risk
Food packaging must still seal, protect, and run commercially. A safe material that fails in sealing or shelf-life performance is not a successful packaging solution.
That is why recycled plastic food-contact use requires both safety review and packaging-performance validation.
PCR, PIR and food-contact sensitivity
Packaging teams often discuss recycled content as if PCR and PIR were interchangeable.
They are not.
PIR, or post-industrial recycled content, comes from manufacturing or converting waste. It may include trim, start-up waste, offcuts, rejected rolls, or clean production scrap. PIR is often more controlled because the source, polymer type, and production environment may be known.
PCR, or post-consumer recycled content, comes from material that has already been used, collected, sorted, washed, and reprocessed. PCR is usually more important for circular economy goals because it creates demand for post-use material. But it is also more complex because the input stream can vary.
For food-contact flexible packaging, PCR requires very careful evaluation.
That does not mean PIR is automatically food-contact approved, and it does not mean PCR is automatically impossible. It means the source, process, intended use, contact status, and documentation must be assessed.
For expert packaging teams, the better question is:
“What is the recycled material source, what is its previous use, how is it controlled, what process decontaminates it, and what evidence supports its use in this specific food-contact structure?”
That question should be asked before the percentage target is set.
Mechanical recycling, chemical recycling and food-contact use
The recycling route influences food-contact suitability.
Mechanical recycling
Mechanical recycling usually involves sorting, washing, shredding, melting, filtering, and reprocessing plastic into flakes or pellets. It can be effective when the input stream is clean, controlled, and compatible.
However, mechanical recycling can be challenging for flexible food packaging because flexible packaging streams are often mixed, printed, laminated, contaminated with residues, and difficult to sort. Mechanical recycling may also struggle to remove certain contaminants sufficiently for sensitive food-contact use unless the recycling process is specifically designed, evaluated, and approved for the intended application.
For some food-contact applications, mechanical recycling is more established in PET bottle-to-bottle systems than in complex flexible packaging streams. For flexible polyolefins, food-contact use can be technically and legally more challenging because of collection stream variability, contamination risk, and the need for robust safety evidence.
Chemical recycling
Chemical recycling may convert plastic waste into feedstocks that can be used to produce new polymers. Depending on the technology, purification, chain of custody, and certification, this route may offer potential for food-contact applications because the final polymer can be closer to virgin material quality.
But chemical recycling is not a free pass.
It raises questions around feedstock origin, process yield, energy use, certification, mass balance, claim language, regulatory acceptance, and commercial scale. Packaging teams should also understand whether the recycled-content claim is physically segregated, mass-balance attributed, or based on another chain-of-custody model.
The practical answer is not that one route is universally better.
The useful question is:
“Which recycling route provides the right combination of safety evidence, material quality, regulatory suitability, traceability, scalability, and credible claim language for this food-contact packaging application?”
Why material placement matters in flexible packaging structures
Material placement is one of the most important decisions when using recycled content in flexible food packaging.
A flexible packaging structure may include:
Outer print layer Ink system Primer Coating Adhesive Barrier layer Core layer Tie layer Sealant layer
A recycled material used in one layer may have a very different risk profile from the same material used in another layer.
Direct food-contact layer
The direct food-contact layer is usually the most sensitive position. In many flexible packs, this is the sealant layer.
Using recycled content directly in the food-contact layer requires strong regulatory support, migration evidence, organoleptic review, and process documentation. It can also affect sealing performance, hot tack, coefficient of friction, contamination resistance, and pack integrity.
For many demanding food applications, this is the layer where assumptions are most dangerous.
Core layer
A core layer may provide stiffness, bulk, or mechanical contribution. In some structures, recycled content may be considered for a core layer because it is not directly touching the food.
However, non-contact does not mean irrelevant.
Substances can migrate through layers depending on material properties, thickness, time, temperature, food type, and barrier function. Core-layer use still requires structure-level review and appropriate documentation.
Outer layer
The outer layer may carry print, protect the pack during handling, support stiffness, or provide heat resistance. Recycled content in an outer layer may be possible in some applications, but it can affect appearance, printability, odor, web handling, and lamination.
Set-off risk should also be considered, especially in rollstock where the outer printed layer may contact the inside surface during winding.
Behind a functional barrier
A functional barrier is a layer or system intended to reduce or prevent the migration of substances from one side of the packaging structure to the other. Functional barriers can be relevant when recycled content is used in a layer that is not intended to contact food directly.
But the phrase “functional barrier” should not be used casually.
The barrier must be appropriate for the substances of concern, the food type, the time and temperature of use, the layer thickness, and the final pack conditions. It must be validated for the intended application.
A functional barrier strategy is not a marketing statement.
It is a technical and regulatory argument that requires evidence.
Functional barriers: what they can and cannot do
Functional barriers are often discussed as a pathway for using recycled content in food packaging.
They can be useful.
But they are not magic.
A functional barrier may reduce migration from a recycled-content layer into food. Depending on the structure, barrier materials may include certain polymers, coatings, metallized layers, SiOx, AlOx, EVOH, polyamide, PET, or other functional layers. The suitability depends on the specific migrant, food type, conditions of use, and regulatory interpretation.
For flexible packaging, the barrier must also survive real-world stresses.
• Converting
• Printing
• Lamination
• Slitting
• Pouch making
• Sealing
• Filling
• Retort or hot fill where relevant
• Transport
• Storage
• Flexing
• Consumer handling
A barrier that performs in flat-sheet testing may not perform the same way after flex cracking, heat exposure, aggressive filling, retort processing, or distribution stress.
That is why functional barrier claims should be evaluated at the final structure and final application level.
Packaging teams should ask:
• What substances must the barrier control?
• What is the expected migration pathway?
• What food simulants are relevant?
• What time and temperature conditions apply?
• Does the barrier survive conversion and filling?
• Does flexing reduce barrier performance?
• Does heat treatment affect the structure?
• Is migration testing required?
• Is organoleptic testing required?
Is the final packaging use covered by the supporting documentation? The purpose of a functional barrier is not to avoid regulatory review. The purpose is to design a safe, evidence-based structure.
Food type matters: dry, wet, fatty, acidic and aromatic products behave differently
Food-contact safety cannot be separated from the product being packed.
Dry foods, wet foods, fatty foods, acidic foods, powders, coffee, snacks, sauces, soups, ready meals, pet food, dairy powders, and medical nutrition products all create different packaging demands.
A dry powder may have different migration dynamics from a fatty sauce. A high-fat product may interact differently with packaging materials than a dry snack. Coffee may be extremely sensitive to aroma loss and odor contamination. Retort foods expose packaging to high heat and moisture. Frozen foods create mechanical and seal-performance challenges. Acidic foods can interact differently with packaging structures and sealants.
This means recycled content cannot be approved generically across all food applications.
A structure that may be suitable for a dry secondary food-contact scenario may not be suitable for hot-fill sauces or retort wet pet food. A structure that works for a short shelf-life product may not be suitable for long ambient storage.
Packaging teams need to define:
• Food type
• Contact time
• Contact temperature
• Storage conditions
• Shelf-life target
• Filling process
• Heat treatment
• Product sensitivity
• Barrier requirements
• Migration test conditions
• Organoleptic sensitivity
Only then can recycled-content placement and functional barrier design be evaluated responsibly.
Performance still matters: safety alone is not enough
A food-contact recycled plastic structure must be safe.
But safety alone does not make it commercially usable.
• Flexible packaging must perform.
• It must seal correctly.
• It must protect shelf life.
• It must withstand distribution.
• It must run on commercial packaging lines.
• It must maintain barrier performance.
• It must support printing and brand presentation.
• It must preserve product quality.
• It must avoid excess converting waste.
• It must support the intended recyclability direction where possible.
Recycled-content structures should be tested for:
• Seal strength
• Hot tack
• Leak resistance
• OTR
• WVTR
• Aroma barrier
• Grease resistance
• Puncture resistance
• Tear strength
• Tensile properties
• Flex-crack resistance
• Lamination bond strength
• COF
• Blocking
• Odor
• Migration
• Retort or hot-fill resistance where applicable
• Line-speed performance
• Aging and shelf-life behavior
The final pack matters more than the resin specification alone.
A recycled-content structure can look acceptable at laboratory scale and still fail at commercial speed. That is why line trials, aging studies, and application-specific validation are critical.
Claim substantiation: food-contact recycled content must be documented carefully
Recycled-content claims in food packaging carry extra responsibility.
A claim must be understandable, accurate, and supported.
Packaging teams should avoid vague language such as:
“eco-friendly”
“green packaging”
“food-safe recycled plastic”
“fully circular”
“sustainable by default”
Instead, claims should be specific and evidence-based.
For example:
• Percentage of recycled content
• PCR or PIR
• Mechanical or chemical recycling route
• Mass-balance certification where relevant
• Which component or layer contains recycled content
• Whether the claim applies to the film, laminate, pouch, or full pack
• Whether the material is approved or suitable for the intended food-contact use
• Whether the final structure supports recyclability direction
• What documentation is available
For food-contact packaging, the claim should never imply safety unless the supporting regulatory evidence exists. A strong claim is not the broadest claim. It is the claim that can survive technical, regulatory, retailer, and customer scrutiny.
What EU packaging teams should ask before specifying recycled content
Expert teams should use recycled content as a structured specification exercise.
The following questions should be asked early:
‣ What is the exact application?
‣ Which food type is being packed?
‣ Is the product dry, wet, fatty, acidic, aromatic, or heat-treated?
‣ What shelf life is required?
‣ What are the OTR and WVTR requirements?
‣ Will the packaging be hot-filled, pasteurized, frozen, or retorted?
‣ Is the recycled content PCR or PIR?
‣ Is the recycling route mechanical, chemical, or mass-balance attributed?
‣ What layer contains the recycled content?
‣ Is it in direct food contact?
‣ Is it behind a functional barrier?
‣ What migration and organoleptic testing is required?
‣ What food-contact documentation is available?
‣ What certificates support the recycled-content claim?
‣ Does the structure still run on the converting and filling line?
‣ Does the final pack support recyclability direction?
‣ Can the claim be used safely in B2B, retailer, and consumer communication?
These questions reduce risk. They also help packaging teams move from sustainability ambition to validated packaging development.
Commercial realism: what is technically possible is not always scalable
Food-contact recycled plastic strategies must be commercially realistic.
A structure may be technically interesting but difficult to scale because of limited recycled material supply, inconsistent quality, high cost, limited certification, line-speed problems, odor variability, or regulatory uncertainty.
Commercialization requires more than a good sample.
It requires:
• Stable material supply
• Consistent recycled feedstock quality
• Reliable film extrusion
• Controlled converting performance
• Food-contact documentation
• Migration and sensory evidence
• Customer approval
• Retailer acceptance
• Claim substantiation
• Cost position
• Regulatory confidence
• Scale-up support
This is where packaging development needs cross-functional collaboration.
R&D, sustainability, procurement, regulatory affairs, quality, converting, technical sales, and marketing must work from the same evidence base.
Recycled content in food-contact flexible packaging cannot be owned by one department alone.
Where TOPPAN Films can support the technical conversation
Food-contact recycled plastics are one of the most important and sensitive topics in sustainable flexible packaging.
Customers want lower virgin plastic use and stronger circularity. Regulation is moving toward more recyclable packaging and recycled-content expectations. Retailers and ESG teams are asking for better documentation. Packaging developers must protect safety, shelf life, and commercial performance.
This is exactly where technical collaboration matters.
TOPPAN Films and TOPPAN Packaging Czech s.r.o. can support packaging teams exploring recyclable high-barrier flexible packaging, Mono-PP and Mono-PE structures, GL BARRIER film options, aluminum foil alternatives, OTR and WVTR targets, retortable packaging development, functional barrier discussions, and PPWR-ready packaging strategies.
The role of TOPPAN Films is not to treat recycled content as a slogan.
The role is to help customers evaluate the structure.
• Where can recycled content be used?
• What layer makes sense?
• What barrier performance is required?
• What food-contact limits apply?
• What testing is needed?
• What documentation supports the claim?
• What structure can realistically scale?
These are the questions that turn sustainability goals into commercially viable packaging solutions.
For food-contact applications, the stakes are high.
The packaging must protect the consumer. It must protect the product. It must protect the brand. And it must protect the credibility of the sustainability claim.
Food-contact recycled content must be designed, not assumed
Recycled plastics can support the future of more circular food packaging.
But food-contact flexible packaging is not the place for shortcuts.
The industry needs recycled-content strategies that are technically sound, legally responsible, and commercially realistic.
‣ That means understanding the difference between PCR and PIR.
‣ It means understanding mechanical and chemical recycling routes.
‣ It means understanding migration risk, odor risk, NIAS risk, and organoleptic performance.
‣ It means knowing where recycled content is placed in the structure.
‣ It means validating functional barriers with evidence.
‣ It means testing the final pack under real application conditions.
‣ It means supporting every claim with documentation.
The question is not: “Can we add recycled content?”
The strongest question is:
“Can we responsibly integrate recycled content into a food-contact flexible packaging structure that protects the product, meets regulatory expectations, performs commercially, supports recyclability direction, and can be documented with credible evidence?”
That is where real packaging innovation begins.
Let us help you reach your EU Packaging goal
If your team is exploring food-contact recycled plastics, functional barrier strategies, recyclable high-barrier flexible packaging, Mono-PP or Mono-PE structures, GL BARRIER film options, aluminum foil alternatives, OTR and WVTR targets, retortable packaging, or PPWR-ready packaging development, TOPPAN Films can support the technical conversation.
Contact TOPPAN Packaging Czech s.r.o. for datasheets, samples, and application-specific packaging discussions: toppancz@toppan.com