Material
Breakfast Cereal
Answer in brief
Cereal is bought by volume and sold by weight, and handling damage moves both numbers the wrong way.
Broken flakes settle denser in the box, so the consumer sees a half-empty pack and the plant sees a giveaway problem.
- Keep velocity low and drops short from dryer to packer.
- Expect segregation wherever shapes, sizes or inclusions are mixed.
- Protect the sugar coating, which rubs off onto every surface it meets.
Reviewed October 21, 2026 · Updated October 21, 2026
Handling challenges
Cereal lines move a very light, very fragile product over long distances, usually through the roof of the building.
Breakage and bulk density
Each transfer breaks flakes, and broken flakes pack tighter in the box.
- Belt and bucket conveying in preference to long pneumatic runs.
- Spiral let-downs into surge bins and packers.
- Lines run full and slow rather than fast and surging.
Checking bulk density at the filler rather than only at the dryer shows how much the conveying system is costing.
Coating and buildup
Sugar and vitamin coatings transfer to chute walls, where they collect fines and eventually fall back into the product as lumps.
Smooth, accessible internals and a cleaning interval based on coating load keep this in check.
Segregation
Multigrain products, clusters and dried fruit separate by size and density at every fall.
Blending close to the filler and minimal free fall keep the box representative of the recipe.
Moisture and crispness
Cereal takes up moisture from humid air within minutes of leaving the dryer, and crispness is the first attribute lost.
Conditioned air in the packing hall and short holding times protect it.
What to establish before buying equipment
- Bulk density at the filler and the acceptable change from the dryer.
- Breakage limit agreed as a measurable percentage.
- Humidity in the packing area.
- Allergen matrix for inclusions and the cleaning standard.
Material behavior
- Flowability
- Free flowing, very low bulk density
- Abrasiveness
- Low
- Cohesiveness
- Low; coating causes sticking
- Moisture behavior
- Hygroscopic; crispness lost quickly above target moisture
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