Food packaging materials explained for safety, shelf life, and recycling

What food packaging materials must do

Food packaging materials are no longer chosen only by price, shelf appearance, or whether they can hold the product. A suitable material must protect the food, stay safe under the intended contact conditions, support the required shelf life, run on filling and sealing equipment, and fit the disposal or reuse system in the market where the package will be used. In 2026, specifications are also being shaped by closer scrutiny of PFAS, phthalates, recycled-content claims, compostability claims, and design-for-recycling rules.

The practical starting point is the food itself. Define the product risk first, then choose the lightest material structure that can meet safety, barrier, strength, labeling, and end-of-life requirements without overstating environmental claims.

For more coverage of material trends, visit our packaging materials section.

Common food packaging materials and where they fit

Most food packaging is made from a limited group of material families. Within each group, however, grades, coatings, additives, and converting methods can change performance significantly. The same material may work well in one application and fail in another if temperature, food chemistry, shelf-life target, or disposal route is not considered.

Plastic packaging

Plastic remains widely used because it is light, formable, sealable, and adaptable to many barrier needs. PET is common in bottles, trays, and thermoformed packs. HDPE is often used for milk, water, and some closures. PP is valued for heat resistance and microwaveable formats. PE films are used in bags, wraps, and flexible structures. Multilayer films can combine oxygen barrier, moisture barrier, heat sealability, puncture resistance, and printability in one structure.

The trade-off is complexity. Barrier performance often improves when more layers or materials are added, but recyclability can decline. Dark colors, metallized layers, incompatible labels, certain adhesives, and mixed polymers can reduce recovered-material value or make sorting harder. For food-contact recycled plastic, regulators also look at input control, cleaning efficiency, and migration risk, not only the recycled-content percentage.

Paper, paperboard, and molded fiber

Paper-based packaging is used for cartons, bags, wraps, cups, trays, folding boxes, and corrugated shipping cases. It offers printability, stiffness, a familiar renewable-material story, and strong collection systems in many markets. U.S. EPA municipal solid waste data for 2018 reported an 80.9 percent recycling rate for paper and paperboard containers and packaging, with corrugated boxes at 96.5 percent.

Direct food contact often changes the specification. Grease, water, or oxygen resistance usually requires a coating, liner, dispersion barrier, wax, or polymer layer. These additions can affect compostability, recyclability, repulpability, and food-contact compliance. A fiber tray that looks simple may still need evidence for coating chemistry, heat exposure, grease resistance, and end-of-life labeling.

Glass and metal packaging

Glass is chemically inert for many foods, transparent, and suitable for hot fill, retort-style applications, sauces, beverages, and premium products. Its main drawbacks are weight, breakage risk, and transport energy. Metal cans and aluminum formats provide strong barriers to light, oxygen, and moisture. They remain important for shelf-stable foods, beverages, pet food, seafood, and retorted products.

Metal packaging normally depends on internal coatings or linings to prevent corrosion, preserve flavor, and protect food quality. The material decision therefore includes not only steel or aluminum, but also the lining system and its compatibility with acidic, fatty, salty, or high-temperature products.

Compostable and bio-based materials

Compostable packaging can be useful where packaging is heavily contaminated with food and is likely to move with food scraps into a commercial composting system. Examples include some foodservice items, certified compostable bags for organics collection, and certain coated fiber products. Compostable does not mean the package will break down in any environment. In the United States, ASTM D6400 is widely used for compostable plastics and ASTM D6868 is used for biodegradable plastic coatings on paper and other compostable substrates. Certification programs such as BPI build on those technical standards.

Bio-based and compostable are also different claims. A material can be bio-based but not compostable, or compostable but not suitable for home composting. That distinction matters for labels, procurement specifications, and consumer instructions.

Material selection should start with the food risk

A common mistake is to ask whether paper, plastic, glass, metal, or compostable packaging is more sustainable in general. The better question is which material structure prevents the most relevant loss for the specific food while meeting regulatory and end-of-life requirements. Food waste can carry a larger environmental burden than packaging in some categories, so under-packaging can be as damaging as over-packaging.

Food or use case	Main packaging risk	Typical material direction	Specification watchpoint
Fresh produce	Moisture balance, respiration, bruising	Perforated films, trays, molded fiber, cartons	Match permeability to the product; avoid trapping condensation.
Bakery and dry snacks	Moisture pickup, grease, aroma loss	Paper bags with barrier, PP or PE films, cartons with inner liners	Check grease resistance, seal integrity, and claim language for coated paper.
Meat, seafood, and cheese	Oxygen control, microbial risk, drip, odor	High-barrier trays, vacuum packs, modified-atmosphere films	Recyclability may be difficult when multilayer barrier is required.
Hot or oily takeout food	Heat, grease, water, deformation	Coated paperboard, molded fiber, PP, aluminum	Verify food-contact approval for temperature and fat contact; confirm PFAS status.
Shelf-stable sauces and canned foods	Oxygen, light, acidity, thermal processing	Glass jars, metal cans, retort pouches, multilayer containers	Validate lining or multilayer compatibility with acidity and processing temperature.
Frozen food	Low-temperature brittleness, moisture, freezer burn	Coated paperboard, PE films, laminated pouches	Test seals and ink performance after freezing and thawing.

Regulatory pressure is reshaping food packaging decisions

Food-contact compliance is the baseline

In the United States, the FDA regulates food-contact substances under the Federal Food, Drug, and Cosmetic Act and related rules in 21 CFR. Relevant categories include adhesives and coatings, paper and paperboard components, polymers, and production aids. A material being common in packaging does not automatically make every formulation suitable for every food, temperature, or duration of contact.

In the European Union, food contact materials are covered by the framework of Regulation (EC) No 1935/2004, with specific measures for some materials such as plastics. The core principle is that packaging should not transfer substances to food in amounts that could endanger human health, change food composition, or affect taste, smell, or appearance. For buyers, declarations of compliance, migration testing where applicable, and clear intended-use conditions are not optional paperwork. They are part of the material specification. See also: BOX DESIGN.

PFAS and phthalates are under closer review

PFAS has become one of the most important chemistry issues for grease-resistant food packaging. On February 28, 2024, the FDA announced that grease-proofing substances containing PFAS were no longer being sold by manufacturers for food-contact use in the U.S. market. In January 2025, FDA also determined that 35 related food contact notifications for PFAS grease-proofers used on paper and paperboard were no longer effective because those uses had been abandoned.

Phthalates are another area where packaging specifications should be kept current. FDA actions in 2022 revoked authorizations for certain phthalates in food-contact uses, while the agency continued evaluating remaining authorized uses and available safety data. For procurement teams, the point is to avoid relying on old generic statements such as food grade plastic. Ask for current documentation for the exact resin, additive package, adhesive, ink, coating, and use condition.

The EU PPWR raises the bar for circular packaging

Regulation (EU) 2025/40 on packaging and packaging waste applies from August 12, 2026. It affects packaging far beyond food, but food-contact packaging is directly touched by requirements on substances, recyclability, labeling, minimization, and recycled content. From August 12, 2026, food-contact packaging placed on the EU market must meet PFAS concentration limits set in the regulation, unless stricter restrictions under other EU laws already apply.

The PPWR also sets future recyclability and recycled-content milestones. From 2030, packaging will have to meet recyclability performance requirements, with stricter grades planned for 2038. For plastic packaging, the 2030 recycled-content targets include 30 percent for contact-sensitive PET packaging, except single-use plastic beverage bottles, and 10 percent for contact-sensitive plastic packaging made from materials other than PET, subject to exceptions where food safety would be compromised.

Recycling, composting, and claims need evidence

End-of-life claims are now a technical and legal issue, not a marketing afterthought. U.S. EPA data show why this matters. Containers and packaging generated 82.2 million tons of municipal solid waste in 2018, or 28.1 percent of total generation. The same dataset reported that plastic containers and packaging had an overall recycling rate of 13.6 percent, while paper and paperboard packaging performed much better. These numbers do not mean every paper pack is automatically sustainable or every plastic pack is poor. They show that recovery systems differ sharply by material and format.

Design-for-recycling guidance from industry groups such as the Association of Plastic Recyclers and RecyClass increasingly evaluates the full package: base resin, color, label, ink, adhesive, closure, barrier layer, sleeve, and residual product. A recyclable main container can still become difficult to recycle if the sleeve, adhesive, or coating is incompatible with the local stream.

Compostability claims need the same discipline. The FTC Green Guides say marketers need competent and reliable scientific evidence for compostable claims, and claims should be qualified if the item cannot be composted safely and in a timely way at home or if suitable municipal or institutional facilities are not widely available. In practice, commercial compostable food packaging should be specified with recognized standards, certification, clear labeling, and confirmation that the target composting facilities actually accept the format.

A practical checklist for specifying food packaging materials

• Define the food-contact condition. Include food type, fat content, acidity, alcohol content if relevant, temperature, contact time, hot fill, microwave, freezer, or retort exposure.
• Set performance requirements before choosing the material. Identify oxygen transmission, water vapor transmission, light protection, grease resistance, puncture strength, seal strength, shelf life, and display needs.
• Ask for current compliance documents. These may include declarations of compliance, FDA regulatory status, EU migration documentation, test conditions, and restrictions on use.
• Review all components. Check inks, adhesives, coatings, tie layers, lids, closures, sleeves, labels, colorants, processing aids, and recycled-content sources.
• Test the pack with the real food. Lab data should be supported by filling-line trials, distribution tests, storage tests, opening tests, and sensory checks when relevant.
• Choose an end-of-life route that exists. Recyclable, reusable, and compostable claims should match the collection and processing systems available to the intended market.
• Avoid broad green claims. Use specific, verifiable language such as made with 30 percent post-consumer recycled PET, commercially compostable where accepted, or recycle if clean and dry in participating programs.
• Keep dated regulatory evidence. PFAS, phthalates, recycled-content rules, labeling rules, and national packaging fees are changing quickly, so specifications should include document dates and review intervals.

Frequently asked questions

What is the safest food packaging material?

There is no single safest material for every food. Safety depends on the exact formulation, contact conditions, food chemistry, temperature, and duration of use. Glass may be highly inert for many foods, but plastic, coated paper, metal, and fiber can also be safe when they are properly specified and compliant for the intended use.

Are paper food packages always more sustainable than plastic?

No. Paper often has strong recycling advantages, especially in corrugated and paperboard streams, but direct food contact may require coatings or liners. Plastic can reduce weight and provide strong barrier performance, which may help prevent food waste. The better comparison is package-by-package, including food protection, material weight, recovery route, and claim accuracy.

Can recycled plastic be used for food packaging?

Yes, but it requires more than simply adding recycled resin. Food-contact recycled plastic needs attention to source control, cleaning effectiveness, contaminant removal, and compliance with the intended market. PET has a more established pathway in many food-contact applications, while other polymers and formats may require more case-specific review.

Does compostable packaging work in home compost?

Usually not unless it is specifically certified or substantiated for home composting. Many compostable food packaging items are designed for commercial composting conditions, where temperature, moisture, oxygen, and processing time are controlled. Labels should make that limitation clear.

What should buyers ask suppliers before switching materials?

Ask for the intended-use conditions, food-contact compliance documents, PFAS and restricted-substance statements where relevant, barrier and shelf-life data, sealing and distribution test results, recycled-content evidence, and end-of-life guidance. A lower-cost or more attractive material is not a good substitute if it weakens food safety, shelf life, or claim credibility.