Food-Contact Corrugated Packaging Regulations: FDA Requirements Explained

Corrugated boxes that come into contact with food -- whether directly touching the food product or serving as the outer container for food packaging -- are subject to FDA regulation under the Federal Food, Drug, and Cosmetic Act. Understanding these requirements is essential for food manufacturers, distributors, and retailers who use corrugated packaging anywhere in the food supply chain.

The good news: corrugated board made from standard materials is generally recognized as safe for food contact. The complications arise with printing inks, adhesives, coatings, recycled fiber content, and specific food categories that have stricter requirements.

The Regulatory Framework

FDA Authority Over Food-Contact Materials

The FDA regulates food-contact materials -- called "food contact substances" (FCS) -- under the Federal Food, Drug, and Cosmetic Act (FD&C Act). The key principle: any substance that may reasonably be expected to migrate into food from its packaging is considered a food additive and must be approved by the FDA before use.

This applies to corrugated packaging in several ways:

The linerboard and medium (paper components)
Adhesives used to bond the corrugated layers
Printing inks applied to the box
Coatings or treatments (wax, moisture barriers, etc.)
Recycled fiber content and any contaminants it may carry

Key Regulations

21 CFR Part 176 -- Indirect Food Additives: Paper and Paperboard Components

This is the core regulation for corrugated packaging used in food contact. It lists the substances approved for use in paper and paperboard intended for food contact, including:

176.170 -- Components of paper and paperboard in contact with aqueous and fatty foods
176.180 -- Components of paper and paperboard in contact with dry food

These sections specify which chemical substances are permitted in paper products that contact food, including:

Sizing agents
Retention aids
Wet-strength additives
Defoamers
Coating materials

21 CFR Part 175 -- Indirect Food Additives: Adhesives and Components of Coatings

Covers the adhesives used in corrugated board construction (the starch-based adhesive bonding linerboard to the fluted medium) and any coatings applied to the board surface.

Standard corrugated board adhesive (corn starch-based) is generally recognized as safe under this regulation. Specialty adhesives (moisture-resistant, high-tack) may require specific compliance verification.

21 CFR Part 178 -- Indirect Food Additives: Adjuvants, Production Aids, and Sanitizers

Covers substances used in the manufacturing process that may be present in trace amounts in the finished packaging, including machine lubricants, release agents, and cleaning chemicals.

Direct vs. Indirect Food Contact

The level of regulatory scrutiny depends on the nature of the food contact:

Direct Food Contact

The corrugated material touches the food product with no barrier between them. Examples:

Pizza boxes (corrugated board directly contacts the pizza)
Produce bins (fruits and vegetables sit directly on the corrugated surface)
Bakery trays (baked goods placed directly on corrugated)
Bulk food containers (grains, snacks, or other dry goods in direct contact)

Regulatory requirement: All components of the corrugated board (paper, adhesive, any surface treatment) must comply with 21 CFR 176.170 (for aqueous and fatty foods) or 176.180 (for dry foods). No printing ink should be present on the food-contact surface.

Indirect Food Contact

The corrugated box contains packaged food -- the food itself is in a primary package (bag, wrapper, bottle, can) and the corrugated box is the secondary or tertiary container. Examples:

Cases of canned goods
Shipping boxes containing bagged snacks
Outer cartons for bottled beverages
Distribution boxes for boxed cereal

Regulatory requirement: The risk of migration from the corrugated to the food is lower because the primary packaging provides a barrier. However, the corrugated material must still be free of substances that could migrate through the primary packaging or contaminate it from the outside.

Functional Barrier Concept

When there's a functional barrier between the corrugated packaging and the food (e.g., a sealed plastic bag, a glass jar, a metal can), the migration risk is significantly reduced, and the regulatory burden on the corrugated component is lower. However, the FDA hasn't formally codified a "functional barrier" exemption -- the standard remains that no unsafe substance should migrate into food from its packaging.

Printing Inks and Food-Contact Corrugated

Printing inks are the most common area of concern for food-contact corrugated packaging. Standard flexographic inks used on corrugated boxes may contain substances that are not approved for food contact.

The Critical Rule: No Ink on the Food-Contact Surface

For direct food-contact corrugated (like pizza boxes), printing ink must never be on the surface that contacts food. This means:

The inside of a pizza box should be unprinted
If the box is printed on the outside, the ink must not migrate through the board to the food-contact surface (this is generally not a concern with standard corrugated board thickness)
If the box is inverted or repurposed in a way that puts the printed surface in food contact, it's a violation

Low-Migration Inks

For sensitive food applications, low-migration inks are formulated to minimize the transfer of ink components from the printed surface through the packaging material to the food. These inks use:

Photoinitiator-free or low-photoinitiator UV formulations
Higher molecular weight components that resist migration
Verified compliance with FDA and EU food-contact regulations

Low-migration inks cost more than standard inks (typically 20-40% premium) and require specific handling and curing processes. They're primarily used for flexible packaging but are increasingly specified for corrugated food packaging as regulatory scrutiny increases.

Set-Off Concerns

Set-off occurs when ink from the printed exterior of one corrugated sheet transfers to the unprinted interior of the next sheet in a stack. During corrugated manufacturing, printed sheets are stacked before the ink is fully cured, and the weight of the stack can cause ink to transfer from the printed face to the food-contact face of the adjacent sheet.

Preventing set-off:

Allow adequate drying/curing time before stacking
Use slip sheets between printed stacks
Apply anti-set-off spray or powder
Use fast-drying ink formulations

For food-contact corrugated boxes, set-off prevention should be verified with your supplier.

Recycled Fiber and Food Contact

Corrugated board is one of the most recycled materials in the world, with a U.S. recycling rate exceeding 89%. However, recycled fiber introduces regulatory complexity for food-contact applications.

The Concern

Recycled fiber may contain:

Residual printing inks from the previous use
Adhesive residues
Chemical contaminants from non-food applications (e.g., boxes that previously held detergent, pesticides, or industrial chemicals)
Mineral oil hydrocarbons (MOH) from printing inks -- a growing area of regulatory attention, particularly in Europe

FDA Position on Recycled Fiber

The FDA does not prohibit recycled fiber in food-contact packaging, but it does require that the finished product be safe. In practice, this means:

Recycled fiber used in food-contact corrugated must be processed to remove or reduce contaminants to safe levels
Manufacturers should have procedures to ensure that recycled fiber sources are reasonably free from contamination
Testing for specific contaminants (mineral oils, plasticizers, heavy metals) is recommended for direct food-contact applications

Industry Practice

For direct food-contact corrugated (pizza boxes, produce trays), many manufacturers use:

Virgin fiber linerboard on the food-contact side (inner liner)
Recycled fiber in the medium (fluting) and outer liner, where food contact doesn't occur
This approach balances food safety with sustainability requirements

For indirect food-contact (corrugated shipping cases containing packaged food), standard recycled-content corrugated board is widely used and generally accepted.

BPA and PFAS: Emerging Concerns

BPA (Bisphenol A)

BPA has been a focus of consumer and regulatory concern in food packaging, primarily in plastics and can linings. For corrugated packaging:

BPA is not a component of standard corrugated board
It is not used in corrugated adhesives or standard inks
BPA can be present in thermal paper (receipts) that enters the recycled fiber stream, potentially introducing trace levels into recycled paperboard
The FDA's current position is that BPA is safe at the very low levels that occur in food packaging, but several states have enacted or proposed BPA restrictions

For corrugated packaging, BPA is generally not a significant concern unless the application involves recycled fiber in direct food contact and the customer or retailer has specific BPA-free requirements.

PFAS (Per- and Polyfluoroalkyl Substances)

PFAS chemicals -- used for grease resistance and moisture resistance -- are a much more significant concern for corrugated food packaging:

PFAS-based coatings have historically been used on corrugated food packaging (pizza boxes, fast food containers, produce boxes) for grease and moisture resistance
Multiple states have banned or restricted PFAS in food packaging (see our overview of state-level packaging regulations)
The FDA has taken voluntary action with industry to phase out certain PFAS substances from food packaging
As of 2026, many corrugated converters have transitioned to PFAS-free alternatives for food-contact applications

If your corrugated packaging requires grease or moisture resistance for food contact, specify PFAS-free treatments and verify compliance with your supplier.

Compliance Requirements for Corrugated Suppliers

Letters of Guarantee

A food-contact corrugated supplier should be able to provide a Letter of Guarantee (also called a Certificate of Compliance or Letter of Continued Guarantee) stating that their corrugated board complies with applicable FDA regulations for food-contact use.

This letter should confirm:

All paper and paperboard components comply with 21 CFR 176.170 and/or 176.180
Adhesives comply with 21 CFR 175.105
Any coatings or treatments comply with applicable sections of 21 CFR 175
Printing inks are not present on food-contact surfaces (or comply with applicable regulations if they are)

Request this letter before placing your first order. Reputable food-contact corrugated suppliers provide it routinely.

SQF, BRC, and GFSI Certification

Many food companies require their packaging suppliers to hold food safety certifications:

SQF (Safe Quality Food) -- A GFSI-benchmarked food safety management system
BRC (British Retail Consortium) Packaging -- A global standard for packaging material safety and quality
FSSC 22000 -- Another GFSI-benchmarked scheme applicable to packaging manufacturers

These certifications ensure the corrugated plant operates under food safety management principles including:

Controlled raw material sourcing
Hygienic manufacturing practices
Allergen and contamination prevention
Traceability systems
Regular third-party audits

Not all corrugated plants hold these certifications. If food safety is critical to your application, specifically seek out suppliers with SQF, BRC, or equivalent certification.

Good Manufacturing Practices (GMPs)

At a minimum, food-contact corrugated should be manufactured under GMPs that include:

Pest control programs in the manufacturing facility
Controlled storage conditions (clean, dry, protected from contamination)
Separation of food-contact and non-food products during manufacturing
Employee hygiene practices
Traceability from raw material to finished product
Complaint and recall procedures

Practical Compliance Checklist

For companies purchasing corrugated packaging for food-contact use, here's a practical compliance checklist:

Before Ordering

Determine whether the corrugated will be in direct or indirect food contact
Identify the food type (dry, aqueous, fatty, acidic) -- this determines which sections of 21 CFR apply
Specify food-contact requirements in your RFQ (see our guide on getting quotes from corrugated manufacturers)
Ask whether the supplier holds SQF, BRC, or equivalent food safety certification
Request a Letter of Guarantee/Certificate of Compliance

During Supplier Evaluation

Verify the supplier has documented food safety/GMP procedures
Confirm the supplier's ink policy for food-contact packaging (no ink on food-contact surface, low-migration inks if applicable)
Ask about recycled fiber content and contamination control for direct food-contact applications
Verify PFAS-free status if grease/moisture resistance is required
Request material safety data sheets (SDS) for any coatings or treatments

For a broader supplier evaluation framework, see our guide on evaluating corrugated box suppliers.

Ongoing Compliance

Maintain current Letters of Guarantee on file (renew annually)
Monitor FDA regulatory updates for changes to food-contact substance approvals
Monitor state-level regulations (PFAS bans are expanding rapidly)
Audit supplier compliance periodically (annually for direct food contact)
Maintain traceability records linking corrugated lot numbers to production dates

Special Applications

Corrugated for Organic Food

USDA organic certification does not impose additional packaging requirements beyond FDA food-contact regulations. However, organic certifiers may audit your packaging materials as part of the overall organic system plan. Ensure your corrugated supplier can provide documentation of material composition for organic audit purposes.

Corrugated for Frozen Food

Frozen food distribution presents unique challenges for corrugated:

Standard corrugated adhesive (starch-based) weakens in freezer conditions
Moisture-resistant treatments are typically required
Wet-strength additives may be necessary
The corrugated must maintain structural integrity through freeze-thaw cycles

Specify "freezer-grade" or "moisture-resistant" corrugated for frozen food applications, and verify that any additional treatments comply with food-contact regulations.

Corrugated for Produce (Fresh Fruits and Vegetables)

Fresh produce is often in direct contact with corrugated packaging (berry clamshells in corrugated trays, apples in corrugated bins). Additional considerations:

Ventilation holes must not introduce contaminants from the exterior surface to the interior
Produce washing does not remove all potential contaminants from packaging
Wax coatings on the corrugated for moisture management must be food-grade

The Bottom Line

FDA regulation of food-contact corrugated packaging is principles-based rather than prescriptive: all materials must be safe, and substances that migrate to food must be approved food additives. For most applications, standard corrugated board manufactured under GMPs with appropriate ink and adhesive controls meets regulatory requirements.

The key actions for food companies are: require Letters of Guarantee from your corrugated suppliers, specify food-contact requirements clearly in your purchasing specifications, ensure no printing ink contacts food, and stay current on emerging concerns like PFAS restrictions and state-level regulations.

For current corrugated market context, visit our pricing tracker.