Dry Pasta

Pasta is a bulk solid whose behavior changes completely with the shape, and one plant usually runs many shapes.

Shape decides the system

• Short shapes behave like a free-flowing granule and tolerate belt and vibratory conveying.
• Long shapes have to stay aligned and are handled on belts and in channels rather than in bulk.
• Nest and sheet products are effectively handled as individual items.

Trying to run every shape through the same bulk system is where breakage statistics come from.

Breakage

Dried pasta is brittle, and the energy at a transfer point is enough to snap it.

Low drop heights, soft let-down chutes and vibratory conveyors with controlled stroke protect the piece count.

Moisture and checking

Pasta that re-absorbs moisture after drying develops fine cracks that appear as breakage later.

Conditioned air between dryer and packing and short holding times limit the problem.

Fines and dust

Flour dust and pasta fines are combustible, and the collector in a pasta plant deserves the same assessment as in a mill.

What to establish before buying equipment

• Shape list and the one with the worst breakage behavior.
• Acceptable breakage percentage at the packer.
• Bulk density per shape, which sets weigher and box sizing.
• Allergen matrix where egg or gluten-free products share the line.

Dry pasta is brittle, and its shape decides how it behaves.

Long shapes bend and snap, short shapes chip at the ends, and in both cases the broken fraction ends up at the bottom of every container. Pasta is also hygroscopic enough that humid storage softens it, and softened pasta breaks even more readily when it is finally moved.

• Keep the store dry and stable; moisture swings cause both breakage and quality complaints.
• Store long shapes horizontally and supported rather than in deep vertical beds.
• Expect the fines to concentrate at discharge, and plan where they are removed.

The whole line is a breakage budget.

Every metre of free fall, every belt transfer and every bend costs a percentage of intact product. The best lines are short, flat and slow, with the transfers designed rather than fitted.

• Minimal drop heights, with cascade chutes where a drop is unavoidable.
• Wide, slow belts rather than narrow fast ones.
• No pneumatic conveying for finished long shapes; it is for the fines, not for the product.

The dust is explosible, and it is the only real hazard here.

• Dust collection at transfer and packing points, protected and isolated.
• Housekeeping to prevent accumulation on structures.
• Allergen control, since durum wheat is declarable and egg pasta adds a second allergen.