PFAS "forever chemicals" are being banned worldwide in food packaging. Published research shows that food-grade crosslinking chemistry can create effective barrier coatings on paper and board. We are investigating this as a research target.
Honest status: CAGE has not yet tested this application. The research below describes published academic findings and the regulatory landscape driving urgency.
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals used in food packaging to resist grease and moisture. The carbon-fluorine bond is one of the strongest in chemistry, making these substances effectively permanent in the environment.
PFAS have been detected in the blood of 98%+ of Americans. They do not break down. They accumulate in water, soil, and living tissue. Scientists call them "forever chemicals" because that is what they are.
In April 2024, the EPA designated PFAS as hazardous substances under CERCLA (Superfund law), creating retroactive cleanup liability for any entity that used, manufactured, or disposed of PFAS.
$10.3B
Public water system contamination
$1.185B
Environmental contamination claims
$30–50B+
Estimated across all pending and anticipated claims
98%+
Americans with PFAS in blood
12+
US states with bans
~10,000
PFAS substances in EU proposal
$400B
US PFAS water cleanup (20yr)
PFAS in food packaging is being banned or phased out across the world. The market is being vacated by regulation.
12+ states have banned PFAS in food packaging: Maine, California, New York, Washington, Minnesota, Connecticut, Vermont, Colorado, Maryland, Rhode Island, Hawaii, and Oregon.
The FDA has conducted a voluntary phase-out program with major PFAS manufacturers for food-contact applications.
Denmark was the first European country to ban PFAS in food packaging (July 2020).
Five EU countries have submitted a universal PFAS restriction proposal covering approximately 10,000 substances — the broadest chemical restriction ever proposed.
3M announced it is exiting PFAS manufacturing entirely by end of 2025, writing off the entire product line.
When the largest manufacturer walks away from its own product, the signal is unmistakable: PFAS is over. The question is what replaces it.
Global Food Packaging Market
$400B+
PFAS-Treated Food Contact Paper & Board
$4–6B
The segment being banned worldwide
US PFAS Water Treatment Cost
$1.5B/yr
$400B projected over 20 years
PFAS treatment adds only $0.005–0.02 per unit to food packaging. This is the bar any alternative must meet. A solution that costs 10x more per package will not be adopted regardless of how safe it is.
Food-grade crosslinking chemistry uses inexpensive, widely available ingredients. The raw materials are cheap. The challenge is achieving competitive barrier performance at industrial coating speeds.
The total cost of PFAS — including litigation, remediation, water treatment, and regulatory compliance — is orders of magnitude higher than any alternative. The $0.005/unit "savings" from PFAS has generated $30B+ in liability.
Peer-reviewed research demonstrates that bio-based crosslinked coatings on paper can achieve meaningful grease and moisture resistance using food-grade ingredients.
Higher = better grease barrier
Lower = better water barrier (g/m²)
info Moisture resistance remains the weak point for bio-based coatings. This is an area requiring further development.
All components in published formulations are food-grade or GRAS (Generally Recognized as Safe), making them ideal for food-contact applications.
Combining crosslinkers with nanofillers approaches Kit 8–10 grease resistance, getting closer to PFAS-level performance.
Most published studies are lab-scale. Translating to industrial coating lines (speed, uniformity, drying) is an open engineering challenge.
Room-temperature grease resistance is achievable. Hot grease resistance (french fries, fried food) is a harder problem and may require advanced formulations.
Every current PFAS alternative has significant trade-offs. No single solution matches PFAS on the combination of cost, performance, and processability.
Good grease resistance. Not recyclable or compostable. Contaminates the paper recycling stream. Fails the sustainability test.
Bio-based, but not home-compostable (requires industrial composting at 58°C+). Heat-sensitive. Softens in hot food applications.
Widely used for moisture sizing in paper. Weak grease resistance when used alone. Needs to be combined with other barrier layers.
Excellent barrier potential. Expensive to produce at scale. Significant scale-up challenges in manufacturing and application.
The gap in the market is clear: no existing alternative matches PFAS across cost, performance, processability, and sustainability. A food-grade bio-catalytic platform that achieves "good enough" barrier performance at competitive cost could capture significant market share. The market does not need perfection — it needs a solution that works at scale, right now.
Transparency is a core value. Here is what is proven, what is promising, and what remains to be tested.
Published research on bio-based crosslinked coatings for food packaging exists and is promising. CAGE has not yet tested this application ourselves. Our crosslinking platform shares chemistry with this published work, but we have not validated W.R.A.P. performance independently.
Cobb values of 30–60 g/m² are significantly behind PFAS (<20 g/m²). This is the same fundamental limitation seen in textile applications. Grease resistance is more achievable than moisture resistance.
Resisting grease from french fries or fried food at serving temperature is a more demanding application than room-temperature oil resistance. Most published studies test at ambient conditions.
Most published studies use lab-scale coating methods (bar coating, dip coating). Industrial coating lines run at high speeds with tight uniformity requirements. Translating results is nontrivial.
A standalone crosslinked coating may not be sufficient. Published work suggests that combining crosslinkers with nanofillers or other additives is needed to approach PFAS-level performance. System complexity increases cost and process difficulty.
The market does not need a perfect PFAS replacement. It needs a solution that is safe, affordable, and available now. Kit 6–8 grease resistance covers the majority of food packaging applications (sandwich wrappers, bakery bags, dry food containers). The premium applications (hot fried food) can be addressed with multi-component systems over time. The regulatory tailwind is enormous: the market is being vacated whether an alternative is ready or not.
Bio-based crosslinked coatings on paper for food packaging have been demonstrated in peer-reviewed publications using food-grade ingredients.
Our food-grade bio-catalytic crosslinking platform shares fundamental chemistry with the coating systems demonstrated in packaging research. The same crosslinking mechanisms that work on textiles and wood can be applied to paper substrates.
PFAS bans are accelerating worldwide. 3M is exiting entirely. The market is being vacated whether alternatives are ready or not. This creates urgency and opportunity for any solution that is safe and functional.
W.R.A.P. is a research target, not a current capability. We are transparent about this. Our near-term focus is validating the core crosslinking platform in other applications first.
If you are a packaging manufacturer, food service company, or researcher working on PFAS alternatives, we would like to hear from you. We are building this openly and collaboratively.