Dry syrup powder filling machine

The correct filling method depends mainly on the powder’s flowability, bulk density, dust level and required dose.

A servo-driven auger system is suitable when controlled volumetric dosing and flexible recipe adjustment are required. For very light or difficult-to-flow pharmaceutical powders, the filling configuration may need additional measures such as agitation, anti-bridging design or a vacuum-assisted approach.

Shanghai Honest Machinery specifically notes that the dry syrup machine can be configured with auger filling, vacuum-assisted filling or servo-controlled powder dosing according to the powder and project conditions. Other pharmaceutical machine manufacturers likewise offer both auger and vacuum-based dry-syrup filling concepts, confirming that there is no single filling principle that is optimal for every powder.

For a real project, we recommend testing the actual powder rather than selecting the filler only from its nominal gram range.

Fine dry syrup powder can remain on the bottle shoulder, neck or sealing surface during filling. That residue can interfere with the following capping operation and can make the finished bottle appear poorly controlled.

For this reason, the machine can incorporate bottle lifting, accurate neck positioning and dust collection so that the filling nozzle is better aligned with the bottle opening and airborne powder is reduced around the sealing area. These options are specifically listed for the dry syrup configuration.

For buyers, bottle-mouth cleanliness should therefore be treated as an FAT item—not merely cosmetic appearance. A continuous test should check whether powder gradually accumulates around the neck after hundreds of bottles, rather than inspecting only the first few samples.

An auger filler dispenses powder according to controlled screw rotation, so a meaningful change in bulk density or powder flow behavior can change the actual filled weight even when the machine recipe remains unchanged.

That is why each formulation—or a major raw-material change—should have its own validated filling parameters. Fine or poorly flowing powder may also need different auger geometry, agitator settings or hopper conditions. Auger fillers are widely used for difficult-flowing and dust-forming materials precisely because the dosing setup can be adapted to product behavior.

For production planning, I would recommend storing separate recipes for different formulations and checking the actual net weight whenever:

• a new powder batch has noticeably different density,
• the formulation changes,
• the room humidity changes significantly,
• or the auger / tooling is changed.

This is much more reliable than assuming that “20 screw revolutions” will always equal the same gram weight.

Both configurations are possible, but the correct choice depends on the bottle neck and your existing package design.

Screw caps use a pre-threaded closure and require controlled tightening. ROPP caps are formed onto the bottle neck during the capping process and are commonly used where a tamper-evident aluminum closure is required.

The dry syrup filling machine can be configured for plastic or glass bottles with screw caps or ROPP caps, while high-speed pharmaceutical dry syrup lines are also commercially supplied as filling-and-ROPP-capping monoblocks.

Before machine production, send actual:

• bottle samples,
• cap samples,
• neck dimensions,
• cap drawings if available.

Do not specify only “50 mm bottle” because neck finish and closure geometry matter more to the capping station than the bottle body diameter alone.

For this product, FAT should go beyond simply showing that the conveyor runs and bottles receive powder.

A practical acceptance test should use the actual powder, bottle and cap and verify at least:

• repeated filled-weight results across a meaningful sample,
• powder accumulation around the bottle neck,
• performance after continuous production,
• bottle positioning under the filling nozzle,
• capping consistency,
• no-bottle/no-fill logic where configured,
• performance at the agreed production speed,
• changeover between agreed bottle sizes,
• cleaning access to the hopper and powder-contact components.

Your current machine specification states a customizable 10–5000g filling range, 10–100 BPM, accuracy of ≤±1% for 10–100g and ≤±0.8% for 100–1000g depending on product and weight, and a stated capping rate of ≥99.99%. These values should not just appear in the quotation—they should be translated into agreed FAT conditions for the customer’s actual product.

This is particularly important because competing dry syrup machines show quite different outputs and accuracy levels depending on the filling principle and configuration; for example, other commercial systems range from roughly 40 containers/min on auger machines to several thousand containers/hour on high-speed rotary systems.