Filling Powders

Product characteristics

Powders vary widely in bulk density, flowability, dustiness and particle size. Fine powders may aerate, bridge or dust, while granular products often flow freely. Hygroscopic products can cake and change behavior over a production run.

Filling technologies to investigate

Technologies commonly considered include auger filling for many powders, net-weight scale filling where accuracy by weight is required, and cup or volumetric filling for consistent free-flowing granular products. Multihead weighers are often discussed for larger granular pieces. Dust containment and product testing with suppliers are typically part of the evaluation.

• Auger Filling

  Dry Product Filling

• Net Weight / Scale Filling

  Dry Product Filling

• Volumetric Cup Filling

  Dry Product Filling

• Volumetric Filling

  Dry Product Filling

• Multihead Weigh Filling

  Dry Product Filling

These are technologies commonly considered for this product type, not a definitive engineering recommendation. Suitability depends on your formulation, container and production requirements.

Container considerations

Jars, cans, composite cartons, pouches, stick packs, sachets and bags are all common. Container opening size and headspace relate to dosing accuracy and dust control.

Production considerations

Consider accuracy requirements by weight, dust collection, ease of cleaning between products, and whether the product is a food, pharmaceutical, nutraceutical or chemical requiring specific construction standards.

Relevant equipment categories

• Pouch Filling MachinesPremade pouch and form-fill-seal machines for liquids, powders and solids.
• Powder Filling MachinesAuger and vibratory fillers for free-flowing and non-free-flowing powders.
• Dry Product FillersCup, vibratory and combination scale fillers for granules, pieces and mixed products.