In the modern packaging industry, accuracy is more crucial than ever, particularly when handling high-value, lightweight, or irregularly shaped products. Traditional weighing systems often fall short in meeting the demands of high speed and precision. That’s where the Mini Multihead Weigher steps in, providing the ideal solution for today’s challenges.
What Is a Mini Multihead Weigher and How Does It Work?
As a specialized branch of the multihead weigher family, the Mini Multihead Weigher is designed for precise weighing of small target weights, typically from a few grams to several hundred grams. The system relies on a combination of logic to achieve rapid, high-precision weighing.
Working Principle
Each weigher features multiple independent weighing hoppers. As the material enters the machine from the top feeding pan, it is distributed evenly across hoppers using a main vibrator and line feeders. Each hopper contains a high-precision sensor (accuracy up to 0.001g using HBM sensors) that instantly measures its load. The CPU selects the best combination of 3–5 hoppers that together come closest to the target weight without exceeding it. These hoppers then release material simultaneously.
This method—based on combination logic, not accumulation—drastically improves both speed and accuracy, reducing product giveaway and material waste.
Versatile Applications: Best for High-Value Small Products
Thanks to its exceptional accuracy and efficiency, the Mini Multihead Weigher finds applications across various industries:
- Food industry: For fine tea, nuts, candy, and other delicate or irregularly shaped foods.
- Non-food applications: Seeds, pharmaceutical products like capsules and tablets, pet food, and small hardware components.
Cannabis Flower Packaging: A Demanding Use Case
As cannabis legalization expands globally, packaging cannabis flowers poses unique challenges:
- Irregular shape and fragility: Cannabis buds are fluffy, brittle, and easily broken during handling.
- Low density and mix weighing: Often mixed with small flower parts, requiring a weighing system that prevents overfilling.
- Small target weights and high value: Typical packs range from 3–5 grams. Even minor weight deviations lead to significant financial losses.
Tailored Design for Cannabis
To meet these challenges, mini multihead weighers for cannabis require specialized enhancements:
- Customized feeding system: Traditional vibratory feeders struggle with cannabis’s sticky, irregular form. A modified feeder with tuned amplitude and frequency ensures even distribution and prevents clogging.
- Gentle hopper design: Angled chutes and smooth surfaces minimize product breakage.
- High-sensitivity sensors and optimized algorithms: For ultra-small weights, sensors must detect down to ±0.03g. Advanced algorithms help hit targets with minimal variance.
- Anti-static technology: Prevents material buildup caused by static.
- Pre-filtering mesh feeder: Some designs feature mesh surfaces to separate fines from intact flowers before weighing.
These innovations ensure the Mini Multihead Weigher handles cannabis precisely and efficiently, reducing costs while protecting product integrity.
Mini Weigher vs. Standard Linear Weigher: What’s the Difference?
While both machines are used in the weighing industry, they differ significantly in their logic, performance, and use cases—especially when it comes to small-weight and high-value materials.
1. Principle of Operation
- Standard Linear Weigher: Typically uses 1–2 hoppers. The material flows in linearly via vibration. Each cycle processes one batch.
- Mini Multihead Weigher: Uses 10+ hoppers working in parallel. The system selects the best combination in each cycle, increasing precision and speed.
2. Accuracy and Overfill Prevention
Mini multihead weighers outperform standard weighers in minimizing overfill—critical for high-value products like cannabis:
- Linear weigher: Tends to overfill to avoid underweight packs, especially with low target weights (e.g., 3–5g). Error margins may exceed ±2g.
- Mini multihead weigher: Precision of ±0.03g ensures accurate packing and reduces waste, saving thousands in raw materials.
3. Speed and Efficiency
- Linear weigher: 20–30 cycles per minute.
- Mini multihead weigher: 35–60 cycles per minute, thanks to simultaneous combination processing.
4. Suitable Material Types
- Linear weigher: Best for smooth, free-flowing materials with less precision requirement.
- Mini multihead weigher: Ideal for delicate, sticky, irregular, or high-value small products.
The Smart Choice for Modern Producers
Mini Multihead Weighers are rapidly becoming essential tools for cannabis flower packaging and similar applications requiring micro-precision. From their optimized feeding and weighing systems to ultra-fine sensors and advanced software, these machines offer an edge in both quality and operational cost.
If you’re looking to streamline your small-weight packaging line with intelligent, high-precision automation, a mini multihead weigher might just be the solution you need.
✅ At Fill Package, We Can Help
As a professional multihead weigher manufacturer and packaging machine supplier, Fill Package specializes in customized solutions for small-weight, high-value products—including cannabis, tea, and seeds.
💬 Ready to upgrade your precision game? Contact us now to explore our Mini Weigher series or request a demo.
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