Hygienic Design of Belt Conveyors

Hygienic design of belt conveyors covers how belts, frames, rollers, guides and drives are built so food residue, water and germs have nowhere to hide and the whole conveyor can be cleaned and inspected.

  • Food safety
  • Facility & equipment design

A belt conveyor carries exposed food from one step to the next, so its belt, frame, rollers, guides and drive all affect hygiene. Hygienic designs use smooth, nonabsorbent belts, open framing instead of hollow tubes, rollers that are not hollow or foam filled, and parts that can be reached or removed for cleaning. Two key references are EHEDG Guideline 43, published in 2016, which covers fabric, modular, metal, wire and profiled belts on conveyors that are wet cleaned, and NSF/ANSI/3-A 14159-3, the U.S. standard for exposed-product mechanical belt conveyors in meat and poultry plants.

Conveyors often touch ready-to-eat food after cooking or baking, so contamination on a belt can transfer to every piece that rides on it. FDA's produce guidance warns that indentations in textured or grip-tread belts can harbor heavy bacterial loads, and it flags interlocking belt edges, gears and sprockets as hard-to-reach spots sanitizer must contact. FDA's Listeria guidance adds that rollers should not collect water and that overhead conveyors should be avoided where practical, because drips and debris can fall onto exposed food.

Key facts

EHEDG Guideline 43
First edition April 2016, 76 pages
U.S. belt conveyor standard
NSF/ANSI/3-A 14159-3 (exposed-product conveyors)
USDA AMS accepted equipment
Re-validated every 4 years
Roller design (FDA Listeria guidance)
Not hollow or foam filled

In a bakery or commercial kitchen

  • Use smooth belts on cooling and packing lines instead of textured or grip-tread belts where the product allows
  • Inspect belts often for cuts, cracks and other damage, and replace any belt that can no longer be kept clean
  • Give belt edges, hinges, sprockets and gears extra attention during cleaning so sanitizer actually reaches them
  • Avoid running conveyors over exposed product; where unavoidable, design them so drips and debris cannot fall on food
  • Leave a walkway around conveyors so every part removed for cleaning or maintenance is easy to reach

For home and cottage bakers

  • For shoppers, this work happens behind the scenes and helps keep sliced bread, cookies and packaged snacks clean on their way to the package

Related entries

Sources

Written by VanillaGoods in our own words from these sources. Last reviewed October 17, 2026.

  1. GL 43: Hygienic Design of Belt Conveyors for the Food Industry, European Hygienic Engineering & Design Group (EHEDG)
  2. Conveying Clean: EHEDG Conveyor Guideline Offers Hygienic Best Practices (October 2016), European Hygienic Engineering & Design Group (EHEDG)
  3. USDA Guidelines for the Sanitary Design and Fabrication of Meat and Poultry Processing Equipment, USDA Agricultural Marketing Service
  4. Guide to Minimize Biological Hazards in Ready-to-Eat Fresh-Cut Produce: Guidance for Industry, U.S. Food and Drug Administration
  5. Control of Listeria monocytogenes in Ready-To-Eat Foods: Guidance for Industry (Draft), U.S. Food and Drug Administration