In food and beverage production, every component that touches the product becomes part of the hygiene chain. A tube carrying milk from a tank to a filling machine is not just a connector. It is a surface in direct contact with something people will consume. That is why choosing the right food-grade tubing matters as much as selecting the right processing equipment.
This article walks through the fundamentals that industrial buyers need to understand when specifying food contact tubing. We cover what “food-grade” actually means, which materials are commonly used, what documentation to request from a supplier, how cleaning requirements influence tube selection, and where these products are used in practice. Whether you are replacing existing tubing or specifying it for a new production line, the goal is to help you make informed, compliant choices.
What Does Food-Grade Actually Mean?
A tube or hose is considered food-grade when it is manufactured from materials approved for direct contact with food and beverages. This means the materials will not transfer harmful substances into the product they touch, a property known as migration safety. In simple terms, the tubing must be chemically inert enough that it does not contaminate what flows through it.
Food contact regulations exist in most markets to define which materials and additives are permitted. In the European Union, a framework regulation governs food contact materials and sets the principle that materials must not transfer their constituents to food in quantities that could endanger human health, change the composition of the food, or deteriorate its taste and odour. The United States follows a similar approach through FDA regulations. These frameworks apply to all food contact materials, including plastic tubing.
A common misconception is that any “clean” or “medical-grade” tube automatically qualifies for food contact use. That is not the case. Food contact approval is specific: it depends on the exact formulation of the plastic, including the base polymer, plasticisers, stabilisers, colourants, and any other additives. A tube can be perfectly suitable for medical gas tubing yet lack the migration testing and documentation required for food contact.
Which Materials Are Used in Food Contact Tubing?
Several plastic materials are commonly used to manufacture food-grade tubing, each with distinct properties that suit different applications. The right choice depends on the type of food or beverage, the operating temperature, the required flexibility, and the cleaning chemicals used in the process.
- Silicone: Highly flexible, tolerates a wide temperature range, and is odourless and tasteless. Silicone tubing is widely used in dairy, beverage, and pharmaceutical applications. It is easy to sterilise but has lower mechanical strength and abrasion resistance than some alternatives.
- PVC (polyvinyl chloride): A versatile and cost-effective option for many food transfer applications. Food-grade PVC formulations use approved plasticisers and are free from substances that could migrate into food at harmful levels. PVC tubing is commonly found in beverage dispensing and water transfer.
- TPE (thermoplastic elastomers): Combine rubber-like flexibility with the processability of thermoplastics. TPE tubes offer good chemical resistance and can handle repeated cleaning cycles, making them a practical choice for food processing lines.
- PE (polyethylene) and PP (polypropylene): Lightweight, chemically resistant, and widely approved for food contact. These materials are often used in rigid or semi-rigid tubing for water, juices, and other non-fatty liquids.
- PU (polyurethane): Offers excellent abrasion resistance and flexibility. Certain PU formulations are approved for food contact and work well in applications involving dry foods, granules, or powders.
The key point is that the base polymer alone does not determine food safety. The complete formulation, including every additive in the compound, must comply with food contact regulations. Two PVC tubes from different manufacturers can look identical yet have entirely different compliance status depending on their formulations.
What Documentation Should You Ask From a Supplier?
Building on the material considerations above, documentation is how you verify that a food-grade hose or tube actually meets the requirements it claims to meet. Without proper documentation, you are relying on trust alone, and that is not sufficient in regulated food production environments.
At a minimum, you should request a declaration of compliance (sometimes called a declaration of conformity) from the tube manufacturer. This document states that the product has been manufactured from materials that comply with applicable food contact regulations. It should identify the specific regulations referenced, the types of food the product is suitable for, and any temperature or usage limitations.
Beyond the declaration, ask for migration test reports. These reports show the results of laboratory testing that measures whether substances transfer from the tubing material into food or food simulants under defined conditions. Migration testing is the practical proof behind the compliance declaration.
You should also confirm the supplier’s broader regulatory compliance. For products used in Europe, REACH and RoHS compliance is important even beyond food-specific regulations, as these frameworks restrict hazardous substances across all product categories. A reliable supplier will provide this documentation proactively, not reluctantly.
Finally, traceability matters. A good food contact tubing supplier maintains batch traceability so that every metre of tube can be linked back to specific raw material lots. If a quality issue arises, traceability allows you to identify the scope quickly and respond effectively.
How Do Cleaning and Hygiene Affect Tube Selection?
In food production, tubing does not simply carry product from point A to point B and stay clean on its own. It must withstand the cleaning and sanitation protocols that food safety demands. This is where many buyers discover that a tube suitable for the product itself may not survive the cleaning process.
Clean-in-place (CIP) systems are standard in many food and beverage facilities. These systems flush hot cleaning agents, caustic solutions, and sometimes acidic rinses through the tubing at elevated temperatures. The tube material must resist chemical degradation from these agents without softening, swelling, cracking, or leaching substances into the next production batch.
For example, a silicone tube that handles milk perfectly at 20 degrees Celsius must also tolerate repeated CIP cycles at 80 degrees or higher with alkaline detergents. If the material cannot handle both the product and the cleaning regime, it will degrade prematurely, creating both a hygiene risk and a maintenance cost.
Surface smoothness also plays a role. Tubing with a smooth inner bore resists biofilm formation and is easier to clean thoroughly. Rough or porous inner surfaces can harbour bacteria even after cleaning, which is why food-grade tubes and hoses are typically manufactured to tighter surface finish standards than general industrial tubing.
When specifying food contact tubing, always define the cleaning method, the chemicals used, the temperatures involved, and the frequency of cleaning cycles. Share this information with your supplier so the material recommendation accounts for the full operating environment, not just the product flowing through the tube.
Where Is Food-Grade Tubing Used in Industry?
Food-grade tubing appears across a surprisingly wide range of applications in the food and beverage industry. Understanding these use cases helps illustrate why material selection, documentation, and cleaning compatibility all matter in practice.
- Dairy processing: Milk, cream, and yoghurt transfer lines require tubing that resists fats and tolerates frequent hot CIP cleaning. Silicone and TPE are common choices here.
- Beverage production: Beer, wine, juice, and soft drink production lines use food-grade hoses for product transfer, filling, and dispensing. The tubing must not impart taste or odour to the beverage.
- Bakery and confectionery: Transfer of liquid ingredients such as chocolate, syrups, and oils often requires flexible, food-safe hoses that can handle viscous materials at varying temperatures.
- Meat and fish processing: Tubing used in these environments must resist fats and proteins while withstanding aggressive sanitation protocols.
- Dry food handling: Pneumatic conveying of powders, grains, spices, and granules uses food-grade tubes that resist abrasion and static buildup.
- Water and compressed air in food facilities: Even utility lines within a food production area often require food-grade tubing if there is any possibility of incidental contact with the product.
The common thread across all these applications is that the tubing is part of the food safety system. A failure in the tube, whether through material degradation, contamination, or inadequate cleaning, can compromise the safety of the final product. That is why procurement decisions for food contact tubing deserve the same rigour as decisions about primary processing equipment.
Toppi Manufactures Food-Grade Tubes and Hoses
At Toppi Oy, we manufacture food-grade plastic tubes and hoses at our production facility in Espoo, Finland. With over 70 years of extrusion expertise, we produce tubing from a range of food-safe materials, tailored to the specific requirements of each application. Our in-house design team and tool shop allow us to develop custom-tailored tubing when standard dimensions or materials do not fit your process.
We work with our customers from the specification stage through to finished product, helping you select the right material, wall thickness, and dimensions for your food contact application. You can explore our hose range and our tube range to see our standard products, but we are equally at home developing something entirely new to your specifications.
If you need food-grade tubing for your production line, tell us about your application. Contact our team or request a quote, and we will help you find the right product for your process.
