PCR Packaging: Using Recycled Content in Flexible Films

Unverified recycled resin can introduce odor, film breaks or an inaccurate content claim. Specify the source, whole-film mass basis and evidence route before selecting PCR for a layer. PCR means post-consumer recycled material; this guide separates physical content, attributed content and food-contact evidence. Recyclable flexible packaging covers the separate recycling decision.

PCR, PIR and what “recycled content” means

Post-consumer recycled content comes from material used by households or businesses and then collected. Post-industrial recycled (PIR) content comes from manufacturing scrap that never reached a consumer. The two have different quality and, in many markets, different weight in claims and regulations. When a supplier says “recycled content film,” ask which type it is and in what proportion. A percentage stated for one layer is not the percentage of the whole film.

Mechanical and chemical recycling

Recycled resin comes from two main routes.

Both routes exist at commercial scale in some markets, and availability, cost and regulatory status vary. The route alone does not tell you whether a resin is equivalent to virgin, so ask for resin data sheets and test results.

Mass-balance attribution

When certified recycled and fossil feedstocks are mixed within a defined system, mass balance can allocate a certified amount to outputs under that system’s rules. ISCC’s explanation distinguishes mass balance from physical segregation and controlled blending. Chemical recycling is a process route; mass balance is a chain-of-custody method, so the two are not synonyms.

An attributed percentage does not measure recycled molecules in each delivered film. Record the scheme, valid scope, accounting period, conversion factors and allocation separately from physical layer content. Certification does not by itself establish that the destination’s claim or recycled-content law accepts that attribution.

Where PCR fits easily

• Secondary and tertiary packaging: collation shrink film, pallet wrap, stretch film and shipping bags are not in direct contact with food and tolerate some variability in color and odor. More on shrink film.
• Non-food products: household goods, garden products and similar items where odor and color tolerance is higher. More on household products packaging.
• Core layers of coextruded films: assess PCR in a middle layer separately from the virgin skins used for printing or sealing. Virgin skins alone do not establish food-contact suitability. More on PE film and flexible packaging film.

Where PCR is hard

For food contact, check the intended use and destination’s rules. FDA considers proposed recycled-plastic uses case by case and provides informal process advice; this is not the same system as the EU rules. Regulation (EU) 2022/1616 governs recycled-plastic food-contact materials within its scope, with technology, process and compliance requirements. A virgin outer layer or generic recycling certificate does not replace the applicable evidence. Other difficult areas:

• Medical and pharmaceutical packaging, which has its own quality demands. See pharmaceutical packaging.
• High-clarity or high-gloss films, where gels and color shift show.
• Thin, high-speed films, where gels and contaminants cause breaks and seal defects.
• Fragrance-sensitive products, where odor from the resin can transfer.

Quality effects and machinability

Recycled resin tends to be more variable than virgin resin, especially mechanically recycled material. Typical issues:

• Gels and specks: small unmelted or cross-linked particles can show as defects, and in thin films can cause holes or weak points.
• Odor: residual compounds from the original use can remain. Odor is hard to measure and can be a reason for rejection.
• Color: recycled PE is often slightly gray, yellow or tinted, and varies between lots. That limits use in clear or white film or requires tinting.
• Property variability: melt flow, density and mechanical properties may vary lot to lot, which can affect film gauge control, seal behavior and tear properties.
• Seal and hot tack: if recycled content sits in or near the seal layer, seal strength and hot tack can shift. Test seal strength and hot tack.
• Gauge and puncture: film with recycled content sometimes needs a higher gauge to match puncture performance. See puncture resistant film.

On the packaging machine, watch for changes in coefficient of friction, tracking, sealing temperature and the rate of film breaks. Run the trial at production speed on a representative quantity, not as a short demonstration.

Specifying and verifying recycled content

Use this record for each film revision and lot. Keep physical content and certified attribution in separate fields.

ASTM D882-18 measures tensile properties of thin plastic sheeting; ASTM D1709-24 addresses free-falling dart impact of film. Neither verifies PCR percentage or food-contact compliance. Agree specimen preparation, conditions and acceptance criteria for the actual film.

How to calculate recycled content?

Example, assumed inputs: a 100 g film sample has a 20 g virgin outer layer, a 60 g core containing 50% physical PCR, and a 20 g virgin sealant. PCR mass = 20 × 0 + 60 × 0.50 + 20 × 0 = 30 g. Whole-film physical PCR = 30 ÷ 100 × 100 = 30%, not the core’s 50%.

Use layer mass, rather than thickness alone, where densities differ. This is arithmetic, not a measured film or a legally approved claim. It excludes any additional pouch components and does not convert certified mass-balance allocation into physical PCR content.

PCR and recyclability together

Recycled content alone does not prove recyclability. Check the complete structure, components and material quality against the chosen stream; then confirm local collection. Mono-PE packaging describes candidate structures, and the design-for-recycling checklist records their evidence.

Market rules and dates

Regulation (EU) 2025/40 has a general application date separate from its recycled-content obligations:

Article 7 uses post-consumer waste and a manufacturing-plant/year average by packaging type and format. Check exemptions and implementing measures before assigning an obligation to a film; a layer example is not that regulatory calculation.

Frequently asked questions

What is PIR vs PCR?

PIR refers to manufacturing scrap; PCR refers to material recovered after consumer use. Keep separate source evidence. A rule requiring post-consumer content, such as PPWR Article 7, cannot be met simply by calling PIR “PCR.”

Can recycled plastic be used in food packaging?

It may be suitable when the applicable process, material and intended-use requirements are met. Check the market-specific food-contact evidence; placing recycled material between virgin layers does not automatically establish compliance.

Sources and method

FDA’s recycled-plastics guidance, Regulations (EU) 2022/1616 and 2025/40, ISCC’s mass-balance explanation and the dated ASTM editions are linked above; reviewed October 9, 2026. Official scopes and scheme guidance support the distinctions, not a film approval. The mass example uses assumed inputs and contains no laboratory content measurement.