Food grade plastic is not a material type. It is a regulatory status that means a material or product is suitable for its intended food contact use when it meets the relevant safety, composition and migration requirements. HDPE and PP can both be suitable for food contact, but the finished product and its manufacturing process determine compliance.
For procurement teams, food manufacturers and logistics managers, understanding what food grade actually means is important. A plastic container may look suitable for food handling, but material choice is only one part of the picture.
What does “food grade” actually mean?
“Food grade” is commonly used to describe materials intended to come into contact with food. However, it is not simply a quality label applied to a particular type of plastic.
A food contact material must be suitable for its intended use and must not transfer substances into food at levels that could endanger health, cause unacceptable changes to the food or affect its taste or smell. The requirements apply to the material, its composition, its manufacturing process and the conditions in which it will be used.
This means that the same basic plastic polymer can be used in different applications, with the finished product requiring different compliance evidence depending on its intended use.
The phrase “food safe” should therefore be treated carefully. A responsible supplier should be able to explain why a product is suitable for its intended food contact application and provide the relevant supporting documentation where required.
Which regulations govern food contact plastic in the UK?
In Great Britain, food contact materials must comply with the general framework established by assimilated Regulation (EC) No 1935/2004. This sets out the fundamental requirements for materials and articles intended to come into contact with food.
For plastic food contact materials, Regulation (EU) No 10/2011 is also particularly important. In Great Britain, the regulation has been retained and adapted into domestic law. It sets requirements for the manufacture and marketing of plastic materials and articles intended to come into contact with food, including rules covering authorised substances and migration.
The Food Standards Agency maintains information on authorised substances and food contact material requirements in Great Britain. Food businesses and suppliers should also consider the specific requirements that apply to their market, including the different regulatory position that applies in Northern Ireland.
In practice, compliance is not established by simply stating that a product is made from HDPE or polypropylene. The finished article and its intended conditions of use must be considered.
HDPE explained: properties and food applications
High density polyethylene, or HDPE, is a widely used plastic with a strong combination of durability, impact resistance and chemical resistance.
Its properties make it suitable for many demanding handling applications. HDPE can provide a robust structure while remaining relatively lightweight, making it useful for reusable containers, crates and other transport packaging.
For food logistics, HDPE is often considered where containers need to withstand repeated handling, stacking, washing and return cycles. Its resistance to many chemicals also makes it suitable for environments where regular cleaning is part of the operating process.
However, the suitability of an HDPE product for food contact is not guaranteed by the polymer name alone. The specific formulation, additives, manufacturing process and intended use all matter.
When specifying HDPE for food handling, procurement teams should ask for evidence that the finished product is suitable for the intended application rather than relying solely on the material description.
Polypropylene explained: properties and food applications
Polypropylene, or PP, is another widely used plastic for food handling and packaging applications.
Compared with HDPE, polypropylene is often selected where greater rigidity or higher temperature performance is required. It can also offer good resistance to chemicals and repeated cleaning processes, making it a common choice for reusable food handling systems.
The exact performance of a PP product depends on its formulation and design. A rigid polypropylene crate, for example, will behave differently from a flexible polypropylene film or a product containing additional materials.
As with HDPE, the term polypropylene food grade does not automatically mean that every product made from PP is suitable for every food contact application. The product must be manufactured and assessed for its intended use.
HDPE vs PP: which should you choose?
There is no universal winner between HDPE and polypropylene. The right material depends on the demands of the application.
HDPE is often a strong choice where impact resistance, durability and chemical resistance are priorities. It is particularly useful for reusable transport packaging that needs to withstand repeated handling.
Polypropylene can be preferable where greater rigidity or higher temperature performance is important. It is also widely used in reusable containers and systems that require repeated cleaning.
Cost can vary depending on the product design, manufacturing process, volume and specification. Neither material should be selected on price alone.
The most important questions are:
- What food or food products will the item contact?
- Will the product be washed or sanitised regularly?
- What temperatures will it encounter?
- How much mechanical stress will it experience?
- Is direct food contact involved?
- What compliance documentation is available?
The answer to these questions will usually provide a better basis for material selection than simply asking whether HDPE or PP is the cheaper option.
Does recycled plastic qualify as food grade?
Recycled plastic can be used in some food contact applications, but recycled content is not automatically suitable for food contact.
The source of the recycled material, the recycling process, the controls applied to the material and the intended use all matter. Food contact applications require appropriate evidence that the recycled material and resulting product meet the relevant requirements.
This is an important distinction for businesses looking to improve sustainability. A product can contain recycled plastic and still require specific compliance evidence before it is suitable for food contact.
The source of the recycled material is also significant. The Food Standards Agency has specifically highlighted concerns around plastics recovered from the open environment, including ocean bound sources, where the history and potential contamination of the material may be uncertain. This is different from recycled plastic obtained through controlled collection and recycling systems.
Sustainability and food contact compliance should therefore be considered together. Recycled content can support circular economy goals, but it does not replace the need for proper safety assessment and regulatory compliance.
How can you verify a supplier’s food grade claims?
A supplier should be able to provide clear information about the material and its intended use.
Depending on the product and application, procurement teams may request:
- A Declaration of Compliance where applicable
- Information about the material composition
- Details of the intended food contact conditions
- Supporting migration testing or compliance evidence
- Information about manufacturing controls
- Relevant certification or technical documentation
The documentation required will depend on the product and the applicable regulations. A general statement such as “food safe plastic” is not a substitute for evidence where evidence is required.
It is also important to ensure that documentation relates to the actual finished product being purchased. Evidence for a raw material does not necessarily demonstrate compliance for every finished article made from that material.
Food grade plastic: what should buyers look for?
When sourcing food safe plastic containers or transport packaging, the most useful approach is to assess the complete product rather than focusing on a single material name.
HDPE and polypropylene can both offer valuable performance characteristics for food logistics. The right choice depends on the application, cleaning process, temperature requirements, mechanical demands and compliance evidence available.
For businesses handling food products, the key question is not simply whether plastic is food grade. It is whether the specific product has been manufactured and documented as suitable for the intended conditions of use.
Frequently asked questions
Is HDPE food safe?
HDPE can be suitable for food contact when the specific material and finished product meet the relevant requirements for the intended application. The polymer name alone does not prove compliance. Buyers should check the supplier’s supporting documentation and intended use conditions.
Is polypropylene food safe?
Polypropylene can be suitable for food contact when manufactured and assessed for the intended application. Its properties can make it useful for reusable food handling and packaging systems, but the finished product must meet the relevant requirements.
What is the difference between food grade and food safe?
Food grade generally describes a material or product that meets relevant requirements for an intended food contact application. Food safe is a broader term often used to describe suitability for use with food. Neither term should replace appropriate compliance evidence.
Can recycled plastic be used for food contact?
Yes, recycled plastic can be used in some food contact applications where the material, recycling process and finished product meet the applicable requirements. Recycled content from uncontrolled or uncertain sources may present additional safety and compliance considerations.
What temperature can food grade plastic withstand?
The temperature a food grade plastic product can withstand depends on its specific polymer, formulation and design. HDPE and PP have different performance characteristics, so buyers should always check the technical specification for the finished product rather than relying on the material name alone.
What certification should a food grade container have?
The documentation required depends on the product, material and intended use. Buyers should request relevant compliance documentation, which may include a Declaration of Compliance and supporting evidence demonstrating suitability for the intended food contact conditions.
