Automatic Stand Pouch Packing Machine

Eight stations operate synchronously and in parallel-handling bag retrieval, filling, and sealing simultaneously without waiting for one another-resulting in high overall efficiency.

Applications: Packaging of powdered products-such as protein powder, nutritional powder, and meal replacement powder-into pre-made bags (e.g., stand-up pouches, zipper bags).

Station 1 | Bag Retrieval Station
Vacuum suction cups pick up pre-made bags from the magazine; grippers hold the bag opening and transfer the bag to the rotary table.
The system detects whether the bag pickup was successful; if retrieval fails, the machine automatically skips the subsequent filling step to prevent material spillage and waste.
Compatible with various bag types, including stand-up pouches, zipper bags, and flat pouches.
Station 2 | Coding Station
Printing (thermal transfer or inkjet) of the production date, batch number, and expiration date occurs while the bag is still empty and the surface is flat.
Advantage: Printing on an empty bag ensures clear text; printing after filling can result in blurred codes due to the bag bulging, so this step is performed prior to filling.
Station 3 | Bag Opening Station
Dual-sided vacuum suction cups pull the bag opening apart while air is blown in to fully expand the opening.
Sensors monitor the opening status; if the bag fails to open or opens improperly, the subsequent filling station (Station 4) automatically halts material discharge to prevent powder from spraying and contaminating the machine.
For fine protein powders, an optional pre-air-blow feature is available to reduce dust adhesion at the bag opening.
Station 4 | Filling Station (Core Station)
Interfaces with a servo-driven auger dosing unit to fill the bag with protein or nutritional powder.
The servo auger ensures precise dosing; an optional vibration mechanism can be added to pack the powder more densely and minimize air pockets inside the bag.
Features an enclosed powder discharge nozzle to minimize dust generation; a dust extraction port is available for ultra-fine nutritional powders.
Station 5 | Bag Opening Cleaning & Auxiliary Station
A critical station for powder packaging! After filling, powder often adheres to the bag opening, which can lead to sealing failures or weak seals resulting in leakage. Bag mouth cleaning: Residual protein powder is removed from the inner bag opening via brushing and air blowing.
Zipper bag models: Automatic zipper closure is performed synchronously.
Expandable options: Nitrogen flushing for freshness preservation and secondary filling for weight correction.
Station 6 | Primary Sealing (Initial Seal + Air Evacuation)
Heat-sealing jaws clamp the bag opening; air is evacuated from the bag before the first heat seal is applied.
For protein powder: Ensures thorough air evacuation and a flat bag profile, reducing powder oxidation and extending shelf life.
Temperature, pressure, and sealing time are adjustable via the touchscreen.
Station 7 | Secondary Sealing (Reinforcement Seal)
A second heat-sealing step creates a double seal for superior strength and prevents powder leakage.
Double sealing is essential for powder products; it significantly improves drop resistance and leak prevention compared to single sealing.
Station 8 | Finished Product Discharge
The clamps release, and the finished package drops onto the discharge conveyor to exit the machine.
Automatic rejection of defective bags can be configured; finished products proceed directly to the subsequent boxing stage.

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