Recycled plastic can pass a tensile test.

It can meet dimensions.

It can survive filling, transport and use.

And consumers may still reject the package because it smells wrong.

Or because it looks gray.

That sounds superficial compared with the enormous technical challenge of recovering, sorting, washing and reprocessing post-consumer plastics.

For brand owners, it is not.

Packaging sits directly between the product and the consumer. In food, beverages, cosmetics and personal care, visual clarity, color consistency and odor are part of how people judge whether a product is fresh, clean and safe.

That creates an uncomfortable problem as companies try to increase post-consumer recycled content.

The next constraint on PCR adoption may not simply be how much recycled resin the industry can produce. It may be how closely that resin can reproduce the sensory qualities consumers have learned to expect from virgin plastic.

The issue becomes more important as packaging regulation and corporate plastic commitments push recycled resin toward applications that were previously protected by virgin-material specifications.

And it changes what “high-quality PCR” actually means.

Purity is no longer enough.

For some packaging, recycled resin also has to be virtually invisible to the nose and eye.

PCR adoption is increasing—but still from a low base

The U.S. Plastics Pact’s latest impact report provides useful context.

Among its participating companies, average use of post-consumer recycled or responsibly sourced biobased content reached 14%, up from 8% in 2021 and 11% in the previous reporting period.

That is real progress.

It should not, however, be reported as a 14% PCR rate for the entire U.S. packaging market.

The figure covers U.S. Plastics Pact participants and combines PCR with responsibly sourced biobased content.

Even within that relatively engaged group of companies, virgin resin still represents most plastic-packaging input.

The reason is not simply lack of ambition.

PCR introduces variability.

Feedstocks originate from packages with different colors, labels, inks, adhesives, product residues and histories.

They have been collected through different systems.

They may have been exposed to heat several times.

And when those materials are blended into another package, some of that history can remain visible—or smellable.

A gray mayonnaise bottle demonstrates why aesthetics are functional

Unilever provides one of the clearest examples.

The company says that when it changed recycled-resin supply for Hellmann’s mayonnaise packaging following supply constraints, the bottles developed a gray appearance.

Consumers noticed.

Some interpreted the darker package as evidence that something was wrong with the mayonnaise itself.

Unilever says it added communication explaining the change and subsequently worked with suppliers on improved sorting, cleaning and blending so it could produce clearer PCR packaging. Its 2025 explanation says Hellmann’s packages containing 50% to 100% PCR were being rolled out across the U.S., Canada and Brazil, with the changes eliminating about 17,000 tonnes of virgin plastic under the company’s stated calculation.

The technical performance of the bottle was not necessarily the problem.

Perception was.

Hellmann’s has separately explained to consumers that PCR inherently can have a darker appearance even though the product inside has not changed.

This reveals something packaging sustainability programs sometimes underestimate.

Color is part of packaging performance.

For mayonnaise, consumers expect something visually associated with whiteness and freshness.

For bottled water, they expect transparency.

For paper towels, a gray outer film can conflict with ideas of cleanliness.

For cosmetics, color consistency may be part of an expensive brand identity.

An engineer may regard slight grayness as irrelevant to structural performance.

The marketing department may regard it as commercially unacceptable.

Both can be right.

Odor creates an even harder problem

Color can sometimes be hidden.

Odor is more difficult.

Polyolefin packaging has absorbed whatever it previously contained.

Laundry detergent.

Fabric softener.

Shampoo.

Cleaning products.

Food.

Fragrances and other volatile compounds can survive the recycling process unless washing and deodorization remove them sufficiently.

That is why recycled PP and PE can sometimes retain a recognizable “PCR smell.”

For a pallet wrap application, that may not matter.

For a drinking cup held centimetres from someone’s nose, it matters enormously.

This creates a hierarchy of PCR applications.

The same recycled resin quality can be completely acceptable in:

a transport film,

a refuse bag,

a secondary package,

or an industrial container,

while being unsuitable for:

a cosmetic jar,

a clear food container,

a beverage cup,

or packaging containing delicately scented products.

The material has not changed.

The sensory tolerance has.

This is why secondary packaging is an important PCR market

One of the smarter strategies is therefore not to force the highest levels of recycled content immediately into the most demanding consumer-facing applications.

Use it first where its imperfections matter least.

Shrink bundling film is a good example.

Pallet stretch film is another.

A consumer may never see either one.

Slight variation in color is therefore much less important.

Odor also matters less if the recycled film is not in close proximity to the product or consumer during use.

Atlantic Packaging’s reported experience with pet-food packaging illustrates the distinction particularly well.

Its work with a pet-food producer eventually moved shrink bundling film from 30% to 50% PCR after successful production trials.

Using PCR in secondary packaging avoided one of the most difficult requirements confronting primary packaging: interaction between recycled-resin odor and an animal’s exceptionally sensitive sense of smell.

That is an important circularity lesson.

The highest-value use for PCR is not automatically the application with the highest consumer visibility.

Sometimes the fastest route to greater recycled-material demand is putting more PCR where nobody notices it.

Packaging designers can also design around PCR rather than fight it

Another strategy is to stop assuming recycled resin has to look exactly like virgin resin.

If PCR naturally produces a darker or more variable material, packaging can sometimes be designed to accommodate that characteristic.

That is different from hiding a quality defect.

It is designing the aesthetic around the actual feedstock.

Pizza Hut and Anchor Packaging’s redesigned wing bowl is an interesting example.

The package contains post-consumer recycled PP and was redesigned without carbon black and unnecessary mineral fillers to improve compatibility with PP recycling. The Association of Plastic Recyclers recognized the project with a 2026 Packaging Design Innovation award. The package also lets restaurant employees sauce and shake wings directly inside the container, reducing a separate preparation step.

Industry reporting puts the PCR content at 10%.

That percentage is modest.

The more interesting design principle is that the sustainability cost was considered alongside the operational value of the package.

The package reportedly costs more than the previous version.

But if it eliminates labour, dishes or food-preparation steps elsewhere, packaging cost alone is no longer the correct comparison.

That is a much more sophisticated business case for recycled content.

PCR economics improve when packaging solves another problem

This point deserves more attention.

Recycled resin often costs more than virgin polymer.

Advanced cleaning costs money.

Sorting costs money.

Odor removal costs money.

Food-grade qualification costs money.

If the business case depends only on swapping a cheaper virgin resin for a more expensive recycled one, PCR adoption can become vulnerable whenever resin markets weaken.

Packaging design can change that equation.

A recycled-content package may also:

reduce labour,

reduce material,

improve stackability,

remove another component,

increase recycled-content compliance,

lower EPR exposure,

or simplify restaurant or filling-line operations.

Then the incremental resin cost can be evaluated against a wider pool of savings.

That is particularly important because circular packaging will rarely scale on environmental value alone.

It needs industrial economics.

Regulation is increasing the value of PCR—but SB 54 needs careful wording

California’s SB 54 is one reason companies are paying more attention to recycled material.

But the relationship should be described accurately.

SB 54 established an extended producer responsibility program covering packaging and single-use plastic foodservice ware. Its permanent regulations became effective on May 1, 2026. By 2032, the legislation targets a 25% reduction in single-use plastic covered material, a 65% recycling rate for that plastic and recyclability or compostability requirements for covered packaging.

SB 54 does not simply impose one universal minimum PCR percentage on every package.

Instead, recycled content can become financially and strategically useful within the system.

The final regulations allow qualifying increases in post-consumer recycled content to receive source-reduction credit through an approved alternative compliance methodology because replacing virgin resin reduces virgin-plastic use. The regulations also require validation mechanisms for such claims.

California’s EPR framework has also contemplated recycled content as one factor affecting producer fees and incentives.

That distinction matters.

Regulation is not simply telling brands:

“put PCR in the bottle.”

It is changing the economics of virgin-plastic use and forcing companies to consider recycled content alongside source reduction, recyclability and packaging design.

More regulatory demand creates a resin-quality problem

This could produce another market tension.

As more brands seek high-quality PCR simultaneously, demand concentrates on the cleanest recycled streams.

Clear PET is one obvious example.

Food-contact PP is another.

High-quality natural PE is another.

Everyone wants material capable of entering consumer-facing packaging.

But the post-consumer waste stream contains far more than clear, odor-free polymer.

It contains printed materials.

Pigmented plastics.

Labels.

Adhesives.

Residues.

Mixed colors.

Fragrances.

Multilayer components.

A circular economy cannot depend entirely on an unlimited supply of unusually pristine waste.

It has to improve the quality of what already exists.

This makes recycling technology as important as package-design targets.

Labels can influence the smell of tomorrow’s package

The label on today’s package can become a quality problem in tomorrow’s recycled resin.

This is why design for recycling has to consider far more than the base polymer.

APR’s current PP evaluation protocol explicitly assesses packaging components including:

labels,

adhesives,

coatings,

inks,

multilayer structures,

closures

and direct printing

because each can affect the performance of the recovered resin and the recycling process.

A package can therefore be predominantly polypropylene and still create problems for the PP recycling stream.

Paper labels are one example raised by recyclers because cellulose does not behave like polyolefin during melt processing.

Printing ink is another.

Adhesives are another.

Those components may represent relatively little package weight while having an outsized effect on recycled-resin quality.

That turns odor control into a design-for-recycling issue upstream.

Instead of asking recyclers to remove every contaminant later, package designers can avoid introducing some of those contaminants in the first place.

Mechanical recycling is becoming a purification problem

Traditional descriptions of mechanical recycling sound simple.

Sort.

Wash.

Shred.

Melt.

Pelletize.

For high-quality PCR, that summary increasingly misses the hardest part.

The process has to remove enough contamination that the polymer can return to increasingly demanding applications.

That means:

better sortation,

hot washing,

surface cleaning,

filtration,

devolatilization,

deodorization,

and tighter control over incoming feedstocks.

The recycled polymer industry is therefore moving from simply recovering plastic mass toward recovering polymer quality.

Those are different objectives.

A tonne of plastic diverted from landfill is useful.

A tonne of PCR capable of returning to packaging has much greater circular value.

Flexloop attacks contaminants before they become the new package

Procter & Gamble and Lindner’s Flexloop technology is one example of that quality-focused approach.

Launched in November 2025, the process targets flexible PE waste and is designed to remove contaminants including surface printing inks, labels, adhesives and odor-causing substances.

P&G says its researchers adapted dissolution-recycling knowledge to improve purification of LDPE and HDPE flexible films and confirmed removal of unwanted surface materials before the polymer is returned as resin.

The significance lies in the intended output.

The objective is not merely to make another low-value black plastic product.

It is to raise the recycled material’s quality enough that it can return to more demanding flexible-packaging applications.

If technologies like this scale economically, they could widen the available pool of PCR suitable for consumer goods.

But economics remain critical.

Every additional cleaning step adds:

capital,

energy,

processing,

yield loss,

and operating cost.

Purity has a price.

PureCycle takes a different route to the same quality problem

PureCycle approaches polypropylene through dissolution purification.

Its process is intended to separate PP from contaminants without breaking the polymer back into petrochemical building blocks.

That distinction is important.

It is not conventional mechanical recycling, but it is also different from pyrolysis or other processes that chemically crack plastic into feedstock molecules.

One highly visible application came at the 2026 College Football Playoff National Championship, where Churchill Container manufactured 32-ounce souvenir cups using PureCycle’s PureFive recycled PP resin.

PureCycle subsequently said the cups were made using 100% PureFive resin.

A drinking cup is a particularly useful demonstration because odor matters immediately.

The consumer holds the package directly beneath the nose.

Any noticeable residual fragrance would be far more problematic than in a shipping film or pallet wrap.

That moves recycled PP into exactly the sort of sensory-sensitive application where conventional PCR can struggle.

Food-grade polypropylene is another major frontier

Polypropylene is widely used in food packaging.

Tubs.

Trays.

Closures.

Takeaway containers.

Microwaveable packs.

Yet food-grade recycled PP has historically been much less established than bottle-to-bottle recycled PET.

That makes Nextloopp’s work particularly interesting.

Nextloopp Americas says it has received a U.S. FDA Letter of No Objection allowing recycled polypropylene produced through its process to be used at up to 100% recycled content across specified direct food-contact conditions.

The company dates that milestone to February 2026.

That does not mean every recovered PP stream automatically becomes food-grade.

The quality and control of the input stream, decontamination process and validated recycling system remain essential.

But it expands the technical pathway for PP packaging to return to higher-value applications rather than being permanently pushed down into non-food markets.

And that matters enormously for circularity.

Food-contact recycling raises the value of clean feedstock

If a recycled polymer can return to food contact, its potential economic value increases.

That creates an incentive for better collection and sorting.

But it also creates competition for high-quality feedstock.

A contaminated bale can become:

lower-value recycled material,

or require more expensive purification.

A well-designed and properly collected package has more options.

This is why recycled-content mandates and EPR policy cannot work independently from design-for-recycling rules.

The industry needs both sides.

Demand for recycled resin.

And supply of packaging capable of becoming good recycled resin.

Without the second, regulatory demand may simply push prices higher for a limited pool of clean PCR.

Color may eventually require a different consumer expectation

Technology can remove contaminants.

It may not always be economically sensible to make recycled resin indistinguishable from virgin material.

That raises another possibility.

Consumers may eventually need to become more comfortable with variation.

Paper offers a useful analogy.

Consumers generally accept that recycled paper may have a different shade or texture from highly bleached virgin paper.

Those differences can even become signals of environmental intent.

Plastic has not developed the same visual language.

Clear means clean.

White means pure.

Perfectly uniform color means quality.

Recycled plastic can disrupt those assumptions.

Brands therefore face a choice.

Spend more to make the PCR invisible.

Or deliberately make recycled appearance part of the design.

The answer will differ by category.

A detergent bottle has much more freedom than a clear mayonnaise jar.

A secondary shrink film has more freedom than either.

Not every package needs premium PCR

This leads to an important material-allocation question.

Should the industry spend significant energy and money purifying every tonne of recycled plastic to food-grade or cosmetic-grade quality?

Probably not.

Different applications need different specifications.

High-purity recycled resin should go where that purity creates value.

Less aesthetically consistent PCR can still serve:

industrial products,

secondary packaging,

transport packaging,

opaque containers,

pallet systems,

and other less sensitive applications.

A well-functioning circular plastics economy needs multiple grades and multiple markets.

Otherwise every producer competes for the same premium recycled feedstock while lower-quality material struggles to find an outlet.

The challenge is matching material quality with application requirements without unnecessarily downcycling material that could have served a higher-value market.

Multilayer packaging provides another way to hide PCR—but with trade-offs

Brands can also place recycled resin in an internal layer.

A package may use virgin resin at the food-contact surface or visible exterior while incorporating PCR within the structure.

That can help manage:

color,

odor,

mechanical variation,

and regulatory constraints.

But it introduces another question.

Does the resulting multilayer structure remain recyclable?

If all layers remain compatible within the same polymer family, the answer may be relatively straightforward.

If recycled content requires introducing incompatible barriers, tie layers or materials, circularity can become worse even as PCR percentage improves.

This is another reminder that recycled content is only one packaging metric.

Higher PCR does not automatically equal better package design.

PCR closures are another underused opportunity

The same principle applies at component level.

If a package cannot yet tolerate high PCR in the main body, recycled material may be viable in:

closures,

caps,

non-contact components,

handles,

bases,

or other opaque elements.

That incremental approach may appear less ambitious than announcing a 100% PCR bottle.

At industrial scale, it can still create substantial recycled-resin demand.

And it avoids forcing material into an application before the resin quality is ready.

Circularity sometimes advances faster through a series of technically robust 10% and 20% changes than through one highly visible 100% target that cannot be scaled.

The quality specification for PCR is getting longer

Virgin resin starts from a relatively controlled production process.

Recycled resin starts with waste.

That fundamental difference explains why PCR specifications are becoming increasingly sophisticated.

Brands may need to control:

melt flow,

mechanical properties,

color,

haze,

black specks,

volatile organic compounds,

odor,

contamination,

migration,

batch consistency,

and recycled-content certification.

That makes procurement more difficult.

PCR can no longer be treated simply as one material category.

Two recycled PP resins containing the same nominal PCR percentage can perform very differently.

The recycler therefore increasingly becomes a specialty material supplier, not just a waste processor.

That is a significant industrial shift.

Consistency may matter more than perfection

A brand might be able to accept slight grayness.

What it cannot easily accept is one batch being clear and the next noticeably darker.

It may tolerate a defined odor threshold.

It cannot tolerate unpredictable fragrance from shipment to shipment.

This means recycled-material suppliers may not need to reproduce virgin resin perfectly.

They do need to reproduce their own PCR consistently.

That is a more achievable—and commercially meaningful—goal.

Packaging lines depend on stable processing windows.

Brand identities depend on stable appearance.

Quality systems depend on predictable inputs.

The premium in recycled resin may increasingly go to suppliers capable of narrowing variability rather than merely increasing recycled percentage.

Consumer perception can therefore determine recycling economics upstream

This creates an unexpected chain of cause and effect.

A consumer rejects gray packaging.

The brand specifies clearer PCR.

The converter requests tighter color tolerances.

The recycler needs cleaner feedstock.

The sorting facility has to separate materials more precisely.

Package designers need to avoid problematic pigments, labels and adhesives.

Suddenly a consumer’s expectation that mayonnaise should look white has influenced decisions throughout the waste and packaging supply chain.

That is why sensory quality is not a trivial end-stage issue.

It feeds backward into recycling economics.

Regulation may expose this problem faster than the industry can solve it

PCR demand is likely to continue increasing.

Companies have voluntary recycled-content targets.

California has created incentives and obligations around virgin-plastic reduction and packaging circularity.

Other U.S. states have separate recycled-content rules for certain packaging categories.

Europe’s PPWR introduces future mandatory recycled-content levels for several forms of plastic packaging.

That means the industry will be trying to move recycled resin into more demanding applications at the same time.

The obvious risk is that regulatory demand grows faster than the supply of suitable material.

If that happens, the bottleneck will not be “recycled plastic” generically.

It will be:

clear recycled PET,

natural PE,

food-grade PP,

low-odor polyolefins,

and other carefully defined grades.

This could make quality improvement one of the most valuable investments in plastics recycling over the next several years.

The best circular package may use recycled material where it creates the most value

The current industry examples point toward a more practical strategy.

Do not begin with the sustainability claim.

Begin with the application.

If consumers never see the package, use its tolerance for color variation.

If the package is naturally dark, design PCR into that aesthetic.

If odor is critical, invest in purification or choose a less sensitive component.

If food contact is required, use an appropriately validated recycling process.

If higher PCR makes the package more expensive, look for operational savings elsewhere in the system.

And design today’s labels, inks and adhesives so they do not become contamination in tomorrow’s resin.

That is much more complicated than simply specifying “30% recycled content.”

It is also much closer to how circular packaging will actually scale.

PCR has to become boring

Perhaps that is the clearest measure of maturity.

Today, a package containing recycled plastic often requires explanation.

Why is it gray?

Why does it look different?

Why does the material have a different feel?

Is the product inside still safe?

Eventually, successful PCR adoption should make those questions unremarkable.

Some applications will use purification technology until recycled resin becomes practically indistinguishable from virgin material.

Others will adopt design language that makes natural recycled variation acceptable.

Still others will put PCR into places where consumers never encounter its sensory characteristics at all.

Those approaches can coexist.

The goal is not to force every tonne of recycled plastic into the same package.

It is to create enough high-value outlets that waste polymer repeatedly returns to useful production.

The U.S. Plastics Pact’s 14% figure shows the industry has moved beyond the starting line.

But increasing that percentage becomes progressively harder when PCR moves from pallet wrap and opaque industrial applications into food, beauty and other consumer-facing packaging.

At that point, recycling performance is no longer enough.

The material has to compete with virgin resin on something consumers rarely think about precisely because virgin plastic has made it so consistent:

how the package looks, feels and smells.

That may be one of the least discussed—and most important—bottlenecks in the next phase of recycled-content packaging.

Last Updated on 16/09/2026 by Jota Machinery