FOSHAN ZCHONE PACK MACHINERY CO.，LTD
Foshan Zhengchang Machinery Equipment Co .,Ltd.
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A bag-feeding packaging machine is a fully or semi-automatic packaging machine designed specifically for automatically removing, opening, filling, sealing, and discharging pre-made bags (such as three-side seal bags, four-side seal bags, and stand-up pouches). Compared to bag-forming packaging machines (such as vertical packaging machines), this machine is more suitable for pre-printed finished bags and is suitable for the efficient packaging needs of industries such as food, daily chemicals, pharmaceuticals, and chemicals.
1. Equipment structure and working principle
(1) Main structural components
| Module | Function Description |
| Automatic Bag Pickup Mechanism | Uses suction cups or robotic arms to precisely pick bags from the bag storage. |
| Bag Opening Device | Uses air blowing, suction cups, or mechanical methods to open the bag mouth. |
| Metering & Filling System | Screw metering (powder), weighing metering (granules), liquid filling (sauces). |
| Sealing Mechanism | Heat sealing (e.g., back sealing, gusset sealing), sewing, or strapping (optional). |
| Finished Product Output | Conveyor belt or robotic arm delivers the packaged products. |
(2) Workflow
(3) Bag picking → 2. Bag opening → 3. Filling → 4. Sealing → 5. Output
2. Equipment classification
(1) According to the degree of automation
Fully automatic bag-feeding packaging machine: automatically completes bag picking, filling and sealing, suitable for large-scale production (such as quick-frozen food, pet food).
Semi-automatic bag-feeding packaging machine: manual bag placement, machine completes filling and sealing, suitable for small-batch flexible production
(2) By sealing method
| Sealing Method | Application Scenarios | Features |
| Heat Sealing (Back Sealing, Gusset Sealing) | Food (snacks, coffee), Daily Chemicals | Excellent sealing, moisture-proof |
| Sewn Sealing | Animal Feed, Fertilizers | Suitable for large packaging (10-50kg) |
| Strapping Sealing | Building Materials, Chemical Granules | Re-closable, ideal for non-airtight needs |
| Vacuum Packaging | Meat, Seafood | Vacuum-sealed + heat-sealed, extends shelf life |
(3) By bag type applicability
Three-side sealing bag (commonly used in small packaged foods)
Stand-up bag (such as liquid condiments, laundry detergent)
Zipper bag (re-sealable, such as nuts, pet food)
3. Core Advantages
✅ High Production Efficiency: Up to 30-80 bags/minute (depending on bag type and material)
✅ Reduced Labor: Fully automatic models require only one person to monitor, reducing labor costs
✅ Attractive Packaging: Suitable for printed pre-made bags, enhancing brand image
✅ Wide Adaptability: Suitable for packaging a variety of materials, including granules, powders, liquids, and bulk products
4. Key Selection Factors
Material Characteristics:
Poorly flowing powders (such as milk powder) require vibration-assisted feeding.
Fragile materials (such as potato chips) require gentle filling.
Bag Type and Size: Bag length, width, and edge sealing width must match the equipment.
Capacity Requirements: Semi-automatic for small batches; fully automatic with multi-station for large batches.
Summary: Pouch-feeding packaging machines are suitable for pre-made bag packaging needs, offering advantages such as high efficiency, low labor costs, and wide adaptability. When selecting a model, consider the material, bag type, production capacity, and sealing method.
