Open Mouth Bagging Machine
Core equipment of the fully automatic bagging line
Open Mouth Bagging Machine Overview
Our Open-Mouth Bagging Machine is a practical dual-purpose packaging solution designed for automatic bagging of granular and powdery materials. It seamlessly switches between granule packaging (biomass pellets, feed granules, fertilizer) and powder packaging (chemical powder, flour, cement powder), achieving “one machine, two uses” to cut equipment costs. With a packaging speed of 10–60 bags/hour and weighing accuracy of ±0.2–0.5%, it meets small-to-large scale production needs—ideal for biomass energy, feed processing, chemical industry, and building materials sectors.
Technical Parameters of Open-Mouth Bagging Machine
| Parameter | Specification Range | Applicable Scenarios |
|---|---|---|
| Packaging Speed | 200-350 bags/hour | Small: 100-200 bags/h; Medium: 200–300 bags/h; Large: 200–350 bags/h |
| Weighing Capacity | 25–50 kg/bag | Granular/powdery materials |
| Weighing Accuracy | ±0.2–0.5% | All models |
| Applicable Materials | Granules (2–12mm): biomass pellets, feed granules, fertilizer; Powders (200–800 mesh): chemical powder, flour, cement | Dual-purpose for granules & powders |
| Power | 1.5–5.5 kW | Small: 1.5–2.2kW; Medium: 3–4kW; Large: 4.5–5.5kW |
| Air Consumption | 0.3–0.8 m³/min (0.6–0.8 MPa) | Pneumatic bag clamping |
Core Components of Open-Mouth Bagging Machine
- Granule Feeding: Adjustable-speed screw feeder prevents granule breakage and ensures uniform material flow.
- Powder Feeding: Auger feeder with anti-bridging design + dust suppression cover, stopping powder floating and environmental contamination.
Features a C3-class load cell and automatic compensation algorithm. It operates in three feeding stages (fast, medium, slow) to keep weighing accuracy within ±0.2–0.5%, suitable for high-flow granules and low-flow powders alike.
Uses high-pressure pneumatic clamping (0.6–0.8 MPa) to secure open-mouth bags (paper, plastic, woven) tightly. Adjustable clamping force avoids bag slippage during filling and protects fragile bags from damage.
Touch screen interface supports parameter setting (bag weight, speed, feeding mode) and fault self-diagnosis. It stores 10+ sets of packaging parameters for quick material switching, cutting adjustment time.
How Does an Open-top Bagging Machine Work?
- Bag Feeding & Clamping: Operators place open-mouth bags on the clamping mechanism, which locks them in place with pneumatic pressure—no displacement during filling.
- Parameter Selection: Choose “granule” or “powder” mode via the touch screen, and call pre-stored parameters (e.g., 25kg/bag for biomass pellets, 50kg/bag for cement powder).
- Quantitative Feeding: The feeder runs in three stages (fast to 80% of target weight, medium to 95%, slow to 100%), avoiding overweighing or underweighing.
- Filling & Dust Removal: Materials fill bags by gravity (granules) or auger pushing (powders). Meanwhile, the dust collector activates to capture floating particles, keeping the workshop clean.
- Bag Unloading & Sealing: After weighing, the clamping mechanism releases automatically. Bags move to the sealing station (heat sealing for plastic bags, sewing for woven bags) to complete packaging.
Core Advantages and Features
Why choose our Open Mouth Bagging Machine？
Switch between granule packaging and powder packaging with one click—no core component replacement needed. Cuts equipment costs by 30–40% vs. buying two separate machines.
C3-class load cell + three-stage feeding control ensures ±0.2–0.5% accuracy, reducing material waste and meeting packaging standards.
Sealed filling port + pulse dust collector keeps emissions ≤10mg/m³, complying with China’s GB 16297-1996 and EU EN 303-5 standards—protecting operator health.
Intuitive touch screen lets new operators master use in 1 day. Routine maintenance (cleaning feeders, calibrating sensors) takes just 10–15 minutes daily.
Main Application Scenarios
1. Biomass Energy Sector
Bags biomass pellets (wood, rice husk) into 15–25kg packs for domestic use or export—ensuring uniform weight and clean packaging.
2. Feed Processing
Packages compound feed granules, aquatic feed, and premix powder into 10–50kg bags, maintaining hygiene and preventing moisture regain.
3. Chemical Industry
Seals chemical powders (PVC resin, titanium dioxide) and granular chemicals in bags, avoiding leakage and environmental pollution.
4. Building Materials
Bags cement powder, mortar, and sand into 25–50kg woven bags—meeting construction site needs with high efficiency.
Customer Site Footage
Customer Application Cases
A Chinese Compound Fertilizer Plant
Uses 3 sets of 700 bags/hour Open Mouth Bagging Machine to replace manual packaging (low speed, ±3% weight deviation, severe dust). It achieves 2100 bags/hour, 105 tons of daily output, and cuts labor costs by 67%.
A Thai Aquatic Feed Factory
Uses 2 sets of 400 bags/hour Open Mouth Bagging Machine to improve semi-automatic packaging (5% feed breakage, pollution). It reaches 800 bags/hour, 0.8% breakage, no pollution, and boosts feed sales by 25% .
A biomass pellet plant in Malaysia
The purchase of an open-mouth bagging machine with a capacity of 400 bags per hour reduced the breakage rate to 1.2%, increased monthly exports from 40 tons to 80 tons, and reduced the number of employees from 3 to 1..
FAQ. About Open Mouth Bagging Machine
It works best with dry materials (moisture ≤15%). Wet materials (moisture >15%) may clog the feeder—pre-drying is recommended.
It fits open-mouth bags of all materials: woven, plastic, paper, and composite (size 30×50cm–50×80cm, customizable).
Use the touch screen’s calibration function: place standard weights (e.g., 25kg) on the platform, follow prompts, and restore accuracy in 5 minutes.
Yes. Select the mode on the touch screen, and the machine auto-adjusts feeding speed and dust removal—no manual component changes.
The speed varies depending on the machine model (semi-automatic/fully automatic), material characteristics, bag weight, and sealing method. When purchasing, you should clearly determine your desired capacity based on current and future production needs.
Weekly: Clean feeders and dust collector filters; Monthly: Lubricate pneumatic cylinders and conveyors; Quarterly: Calibrate load cells. Proper care ensures 8–10 years of service.
Our company provides a 12-month warranty on core components (such as motors and sensors) (excluding consumables). The specific terms and conditions are subject to the purchase agreement.
Yes. We offer technical support, troubleshooting, operator training, and a guaranteed supply of essential spare parts to minimize equipment downtime.
Buyer's Guide
How to choose the most suitable bagging machine?
Calculate daily packaging volume and add 10–20% redundancy to avoid bottlenecks.
Tell the manufacturer your material type (granule/powder), particle size/mesh, and moisture—ensure the feeder and dust removal system fit.
Choose C3-class load cells for high-precision needs (chemicals, feed); standard precision works for general materials.
For powders or eco-strict regions, pick models with pulse dust collectors (emissions ≤10mg/m³) to avoid fines.
Small workshops can use basic PLC models; large lines benefit from IoT-connected systems (remote monitoring + data logs).
Partner with manufacturers with 5+ years in packaging equipment, offering on-site installation, training, and global spare parts (7–15 days delivery).
Get Your Customized Open Mouth Bagging Machine Solution
With 10 years of experience in Open-Mouth Bagging Machine, Granule Packaging Machine, and Powder Packaging Machine manufacturing, we understand diverse industries’ packaging needs. Whether you need a small manual-assist model or a large fully automatic system, we’ll tailor it to your material type, packaging weight, and production scale.
Contact us today to get:
- Free capacity matching (share your daily output and packaging specs).
- Industry-specific operation videos (e.g., biomass pellet, chemical powder packaging).
- Transparent quotes (no hidden fees—includes machine, dust collector, installation, and training).
We don’t just sell packaging equipment—we help you boost efficiency, cut costs, and ensure consistent product quality. Let’s launch your customized packaging solution!