How Zipper Pouch Rotary Packaging Machines Work – Full Workflow Explained

As the demand for resealable pouches continues to grow in the food, supplement, and household product industries, zipper pouch packaging machines have become an essential part of modern production lines.

At Shanghai JOSO Packing Machinery Company, we offer multi-station rotary pouch packing machines designed to handle zipper bags with precision, speed, and reliability. Here’s a breakdown of how this system works when using pre-made zipper pouches.

⚙️ Full Workflow for Zipper Pouch Packaging (8–10 Stations)

1. Pouch Pick-Up
   The machine automatically picks pre-made zipper pouches from the bag magazine.

2. Zipper Pre-Opening (Optional)
   For closed zippers, a pre-opening station gently opens the zipper using heat or mechanical devices.

3. Pouch Opening
   Vacuum suction cups and clampers fully open the pouch, including the zipper section.

4. Pouch Detection
   Sensors verify the bag is properly opened before proceeding. Unopened pouches are safely rejected.

5. Filling Station
   Powders, granules, or liquids are filled via auger fillers, multi-head weighers, or pumps, depending on the product.

6. Dust Removal / Air Cleaning (Optional)
   Especially for powders, this step removes dust from the sealing area for clean sealing.

7. Zipper Closing (Re-sealing)
   A dedicated pressure bar closes the zipper section before heat sealing.

8. Heat Sealing
   The top of the pouch (above the zipper) is sealed with temperature-controlled sealing jaws.

9. Cooling & Shaping (Optional)
   Cooling plates ensure tight, clean seals and enhance bag appearance.

10. Finished Product Discharge
    The sealed pouch is discharged to the output conveyor and ready for downstream processes.

🧃 Ideal for:

• Food powders (milk powder, starch, moringa, spice mixes)

• Granules (coffee, rice, cereals, snacks)

• Liquids and pastes (sauces, shampoo, detergents)

• Resealable ziplock or Doypack-style bags

✅ Key Advantages:

• Fully automated, modular design

• Supports resealable zipper function

• Clean and hygienic operation

• Customizable for various bag sizes and product types

• Compatible with nitrogen flushing, date printing, and more

At Shanghai JOSO, we help manufacturers worldwide upgrade their pouch packaging capabilities with flexible, robust, and precise machinery.

Interested in zipper pouch solutions?
Contact us today for a customized layout or demo video.

Kelso
Shanghai JOSO Packing Machinery Company