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What Is a Granular Gravity-Flow Packaging Machine?

A granular gravity-flow packaging machine is a piece of equipment specifically designed for the automated packaging of granular materials. It handles tasks like measuring, filling, sealing, and coding to enable efficient and precise packaging production.

How It Works

1. Granular materials first enter a precise measuring device via a conveying system.
2. The measured materials are then filled into packaging materials that have been formed into bags.
3. Sealing is done using heat-sealing or ultrasonic technology, and the final step involves cutting the packaging into individual units for output.
4. The entire process is coordinated by a PLC control system—this ensures all steps (like bag forming, filling, and sealing) work in sync for high efficiency and accuracy.

Key Structural FeaturesMachine Parameters

1. Feeding & Measuring System: A stainless steel hopper works with a vibratory or screw feeder to ensure steady material supply. The measuring device uses an electronic weighing module, with an accuracy of ±0.1%.
2. Bag Forming & Sealing/Cutting Mechanism: A servo motor drives the film conveyance. The film is folded into bags using a U-shaped or J-shaped former, then sealed with heat-sealing blades or ultrasonic tech. Round or flat blades cut the packaging into individual units precisely.
3. Smart Control System: It uses a PLC + touchscreen for parameter adjustments. Photoelectric sensors monitor material position in real time, and a self-diagnostic system automatically removes defective products.
4. High-Strength Materials: The machine cabinet and hopper are made of 304 stainless steel—this makes them wear-resistant and corrosion-proof. The detachable design also makes cleaning and maintenance easier.
5. Flexible Adaptability: You can switch out formers to support bag types like three-side seals or pillow seals. It also supports modular expansion (e.g., adding conveyors or coders) to meet needs across food, chemical, pharmaceutical, and other industries.

Typical Applications

1. صناعة الأغذية: Used for packaging food ingredients and finished products like candy, cookies, flour, and seasonings.
2. صناعة الأدوية: Ideal for packaging medicines, health supplements, and similar products.
3. الصناعة الكيميائية: Suitable for the quantitative packaging of granular materials such as polyethylene and polypropylene.
4. Agricultural Industry: Used to package grain crops (like seeds, corn, and wheat) as well as fertilizers (such as organic and compound fertilizers).
5. صناعات أخرى: Works for packaging stationery, electronic products, printed materials, cosmetics, toys, auto parts, tableware, and more.

Main Advantages

1. High Efficiency & Automation

• Boosts productivity: Automated packaging speeds can reach hundreds to over a thousand bags per minute.
• Enables non-stop operation: Minimizes downtime and supports 24/7 running, significantly increasing production line throughput.
• Reduces labor needs: A single packaging line can cut 4–10 workers, lowering management costs.

2. Precise Measuring & Quality Control

• High-precision weighing: The electronic scale ensures very low measurement errors.
• Consistent quality: Sensors and PLC control guarantee standardized packaging weight and sealing quality.
• Flexible adjustments: Easily tweak parameters like bag length (50–200mm) and sealing temperature to fit different product needs.

3. Versatility for Multiple Scenarios

• Covers multiple industries: Works for sealing granular materials in food (sugar, nuts), pharmaceuticals (tablets), chemicals (fertilizers), and agriculture (seeds).
• Supports diverse packaging: Compatible with bag types like three-side seals and pillow seals, and works with various packaging materials (e.g., woven bags, plastic films).

4. Safety & Hygiene Assurance

Safety protection: Equipped with overload protection and a self-diagnostic system to lower operational risks.

Reduces contamination: The fully enclosed packaging process avoids manual contact, meeting hygiene standards for the food and pharmaceutical industries.