Once a company decides it wants recycled content in its food packaging, the abstract question of whether it's allowed turns into a very concrete one: is this particular material, from this particular supplier, safe and acceptable for this particular use?
Answering that takes more than a supplier saying "food grade." This guide gives you a practical way to assess a recycled plastic, step by step. If you want the regulatory background first, start with our article onwhether you can use recycled plastic in food packaging.
Virgin plastic has a known production history. Recycled plastic, especially post-consumer material, doesn't. Before it was recycled it may have held food, household chemicals or other products, and contaminants can remain in the material. That's the central concern, and it drives everything below.
So the assessment isn't just about the plastic. It's about the recycling process that cleaned it, the control of what goes into that process, and the evidence that the end result is safe for the intended use.
Start with the application, because acceptability depends on it. Write down:
Food type: dry, aqueous, fatty, acidic, alcoholic
Temperature and time: cold storage, room temperature, hot-fill, microwave, long shelf life
Contact: direct contact with food, or behind another layer
Single use or repeated use
Target markets
The same recycled material may be fine for one application and unsuitable for another, so vague descriptions lead to wrong conclusions.
Ask the supplier to describe the material clearly:
Polymer type
Source of the input: post-consumer, post-industrial, or a mix
Type of recycling: mechanical, or a form of chemical recycling
Grade and specification
These details matter because different sources and processes carry different risks and face different expectations. A material made from a well-controlled, narrowly defined input stream is easier to assess than one from a mixed or poorly documented one.
For many markets, the question isn't only whether the plastic is acceptable, but whether the recycling process has been recognized for food contact use. In some regions processes need authorization. In others regulators have reviewed submissions about specific processes and indicated they have no objection under described conditions.
Two points to confirm:
What exactly has been recognized? Often it's a specific process, at a specific facility, for specific conditions of use, not the plastic type in general.
Does it cover your market and your use? Recognition in one region doesn't automatically carry over to another.
Global Regulations for Food Contact Substances and Materials shows how approaches differ across major markets.
If the process is meant to remove contaminants, ask how that has been shown. Useful evidence typically includes:
A description of the process steps
Results from testing designed to show how well the process removes contaminants, including how that was done
The operating conditions the results apply to
Whether those conditions are actually what the facility runs day to day
Be alert to the gap between lab demonstration and routine production. Evidence is only meaningful if the plant operates within the conditions that were tested.
Even a strong process depends on what goes into it. Ask about:
How input material is sourced and sorted
Limits on contamination in the input
How the supplier checks incoming batches
Whether you can trace a delivery back to its input and process records
For some forms of recycling, suppliers use accounting methods to link recycled input to output. Regulators and customers treat these differently depending on the market and the type of claim, so ask exactly what is being claimed and on what basis, and check what your target markets accept.
Recycled material can contain substances that were never intentionally part of the original plastic, such as residues from previous contents or breakdown products from reprocessing. These are often grouped as non-intentionally added substances.
Ask how the supplier addresses them, and whether testing for your application has considered them. Standard migration testing designed for virgin material may not reveal everything relevant to recycled material, so ask what testing has been done and why it's considered adequate.
In some packaging designs, recycled material sits behind a layer of virgin or other approved material. Whether that can reduce concerns depends on whether the layer really acts as a barrier in the relevant conditions and whether the rules in your market recognize that approach.
This is a technical judgment, not an assumption. It needs evidence for the specific structure and use.
Testing should reflect the real application:
Migration testing under conditions that match the intended food type, temperature and time
Sensory checks for odor and taste, since recycled material can carry them, even when safety limits are met
Performance checks to confirm the material still protects the product through shelf life
Check that test reports name the actual material and conditions, not a similar one.
A good supplier can give you clear, specific paperwork. Look for a declaration of compliance that names the applicable requirements, identifies the specific material, states the conditions of use it covers, and is dated. Our article onwhat a declaration of compliance should contain explains how to judge this.
Vague statements such as "suitable for food contact" aren't enough. If you can't tell what they cover, they don't protect you.
Quality can vary over time as input streams and process settings shift. Agree with the supplier:
That you'll be told about changes in input source, process or facility
How often documentation will be refreshed
What triggers re-testing
How batches are tracked in case a problem arises
Treat any change as a trigger for a compliance review before you accept the material.
What exactly is the material, and where does the input come from?
Which process produces it, and has that process been recognized in my market?
What evidence shows contaminants are removed, and under what conditions?
Does the plant operate within those conditions routinely?
How is input controlled and traced?
What testing covers unintended substances and my specific use?
What documentation can you provide, and what does it cover?
How will I be told about changes?
Reluctance to describe the process or input source
Claims of "food grade" with no supporting detail
Documents that don't identify the material or the conditions of use
Test data for a different material or different conditions
No traceability between deliveries and process records
Pressure to approve quickly because of sustainability targets
Recycled content targets, packaging rules and producer responsibility fees all push toward more recycled material, but none of them replaces the need to confirm food safety. This assessment is how you respond to those pressures without creating a food safety problem.
Start by writing down your exact intended use, then ask your supplier the questions above. The quality of the answers will tell you quickly whether you have a well-controlled material or a risky one. Sharing this knowledge across purchasing, packaging, quality and regulatory teams helps decisions move faster.
Build your foundation withPackaging Sustainability 101, which shows how recycled content, packaging rules and food safety fit together.
