
Automatic rotary granular packing machine with multihead weigher
Packaging Weight: 10–5000 g
Packing Speed: 20–120 Bags/Min
Weighing Accuracy: ±0.1–1.5 g (Depending on Product)
Bag Type: Premade Pouches (Stand-up, Zipper, Flat, 4-Side Seal)
Machine Material: SUS304 Stainless Steel
The Automatic Rotary Granular Packing Machine with Multihead Weigher is an integrated granular packaging system that combines automatic weighing, bag feeding, bag opening, filling, sealing, and finished product output. It is suitable for pre-made bag packaging production lines. The equipment consists of a multihead combination weigher, a rotary bag feeding and packaging machine, a conveying system, and a control system. It can be used for the automatic packaging of granular, lumpy, and some flake materials.

Common packaging weight ranges from 10g to 5000g, and different models can be adjusted according to product requirements. The packaging speed is typically 20–120 bags/minute, with the specific speed affected by the packaging weight, bag type, and material flowability. The machine body is usually made of SUS304 stainless steel, and different materials can be selected for parts in contact with materials according to usage requirements.
Suitable Products
| Product Category | Suitable Products |
|---|---|
| Nuts | Cashews, Almonds, Pistachios, Peanuts, Walnuts |
| Snack Foods | Popcorn, Candy, Chocolate Beans, Potato Chips |
| Grains | Rice, Millet, Green Beans, Red Beans, Oatmeal |
| Frozen Foods | Dumplings, Meatballs, Shrimp, Corn Kernels |
| Pet Food | Dog Food, Cat Food, Freeze-Dried Pet Food |
| Hardware Parts | Screws, Nuts, Washers, Small Components |
| Plastic Granules | PP, PE, ABS Plastic Pellets |
How Does It Work?
When purchasing equipment, customers are usually concerned about the smoothness of the packaging process and the ease of changing products. This equipment provides continuous operation from material feeding to finished product output.

Material is first fed into a multi-head weigher via an elevator. The weighing hoppers automatically combine to produce a weight close to the set value, then the material is fed into pre-opened pre-made bags. A rotating mechanism sequentially completes bag picking, opening, filling, venting, heat sealing, and bag unloading, with each station operating in a fixed sequence. Operators only need to set the packaging weight, bag type, and operating parameters to complete continuous packaging. When changing products, formula parameters can be adjusted, and corresponding parts can be replaced according to the bag type, reducing downtime.
Why a Multihead Weigher Instead of a Cup Filler?
Different products have different requirements for weighing methods; multi-head weighers and cup fillers are suitable for different application scenarios.
| Comparison Item | Multihead Weigher | Cup Filler |
|---|---|---|
| Weighing Method | Combination Weighing | Volumetric Filling |
| Weight Adjustment | Flexible | Fixed Cup Volume |
| Suitable Products | Nuts, Candy, Pet Food, Frozen Food | Rice, Sugar, Beans |
| Product Changeover | Parameter Adjustment | Cup Replacement |
| Packing Speed | 20–120 Bags/Min | Medium Speed |
| Weight Consistency | Stable | Depends on Material Flow |
If the product has an irregular shape, such as cashews, candy, or meatballs, the multihead weigher can accommodate materials of different sizes; if the product has uniform particle size, cup fillers can also meet some packaging needs.
Why Choose a Rotary Packing Machine With a Multihead Weigher?
Combining a rotary bag packaging machine with a multihead weigher allows for continuous operation of weighing, bagging, and sealing, suitable for continuous production.
The equipment supports various pre-made bags, including stand-up pouches, zipper bags, four-side seal bags, and flat bags, facilitating switching between different packaging formats. The touchscreen can save multiple sets of product parameters, reducing repetitive settings when producing different specifications. For products such as nuts, pet food, and candy, the equipment maintains continuous feeding, reducing manual intervention. The packaging bags are sealed flat, suitable for subsequent boxing, transportation, and sales.

Available Configurations
Different configuration combinations can be selected according to different packaging requirements.
- 10-head, 14-head, or 20-head Multihead Weigher
- Z-Type Bucket Elevator
- Finished Product Conveyor
- Working Platform
- Metal Detector
- Check Weigher
- Date Coding Printer
- Nitrogen Flushing Device
- Dust Collection Device
- Automatic Pouch Sorting System
- Rotary Premade Pouch Packing Machine
- Remote Fault Diagnosis Function
Different configurations can form a complete packaging production line or be integrated with existing production equipment.

Technical Specifications
| Item | Specification |
|---|---|
| Packaging Weight | 10–5000 g |
| Packing Speed | 20–120 Bags/Minute |
| Weighing System | Multihead Combination Weigher |
| Bag Type | Premade Pouches |
| Bag Width | 80–240 mm |
| Bag Length | 100–350 mm |
| Packaging Material | Laminated Premade Pouches |
| Power Supply | AC220V / 380V, 50/60Hz |
| Air Pressure | 0.6–0.8 MPa |
| Machine Material | SUS304 Stainless Steel |
| Control System | PLC + Touch Screen |
Industries Using This Machine
This equipment can be applied to multiple industries. Food processing companies can use this equipment for packaging nuts, candies, coffee beans, oatmeal, and pet food; grain processing companies can package rice, grains, and beans; frozen food companies can package shrimp, dumplings, meatballs, and other products; plastic product companies can package plastic granules; and hardware companies can package screws, nuts, and small parts. For companies requiring different packaging specifications, different models can be configured based on product weight.

How To Choose The Right Model?
When selecting equipment, first confirm the product type, packaging weight, packaging speed, and bag size.
If the product weight is less than 30g, a small-sized combination weigher can be selected; for packaging from 100g to 1000g, a common 14-head combination weigher is suitable; for products over 1kg, larger weighing hoppers are recommended. If the production line requires zipper bags, stand-up pouches, or irregularly shaped bags, the compatible bag dimensions should be confirmed in advance. For manufacturers producing multiple package sizes, models with recipe storage functions simplify product changeovers.

FAQ
Q1: What products can the equipment package?
It can package nuts, candy, rice, beans, pet food, frozen food, plastic granules, and small hardware accessories.
Q2: What bag types does the equipment support?
It supports stand-up pouches, zipper bags, flat pouches, four-side seal bags, and other premade pouch types.
Q3: What is the packaging speed?
Depending on the packaging weight and bag type, the speed generally ranges from 20 to 120 bags per minute.
Q4: What is the price of the equipment?
The price depends on the number of weighing heads, packaging weight range, pouch specifications, and optional configurations. Standard models generally range from tens of thousands of US dollars. Optional equipment such as metal detectors, nitrogen flushing systems, and check weighers will affect the final quotation. Providing product photos, package weight, pouch size, and production capacity will help determine a suitable model and quotation.
Q5: Does it support customization?
Yes. The equipment can be configured according to product size, pouch type, packaging weight, and production line layout.
Factory photos of an automatic rotary granular packing machine with a multihead weigher

An Automatic Rotary Granular Packing Machine with a Multihead Weigher integrates automatic weighing, bag feeding, filling, and sealing into one continuous packaging process. It is suitable for packaging nuts, grains, pet food, frozen food, plastic granules, and hardware components. By selecting suitable multihead weigher models, rotary packing machines, and optional equipment, manufacturers can build packaging lines that match different production capacities. Before selecting a machine, preparing information such as product photos, package weight, pouch dimensions, and expected production output will help identify an appropriate equipment configuration.




