Description
LSF-20: Semi-Automatic Gravimetric Screw Dosing Machine
Achieve Consistent & Accurate Filling for Challenging Products
Managing the packaging of powders, scrubs, and other free-flowing or cohesive materials can be inconsistent and wasteful. The LSF-20 Semi-Automatic Doser eliminates guesswork by providing weight-based precision. Its advanced strain gauge technology measures each dose by mass, not volume, compensating for product density variations to deliver unparalleled weight accuracy and reduce costly product giveaway.
Engineered for Your Specific Industry Needs
This isn’t a one-size-fits-all machine; it’s a specialized solution for your market.
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For Cosmetics & Personal Care: Perfect for filling salt scrubs, sugar scrubs, and body powders with consistent portion control, enhancing product quality and brand reputation.
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For Food & Beverage: Reliably doses a variety of food powders, spices, and nutritional supplements.
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For Specialty Goods: Excellently suited for filling hookah tobacco (maassel), ensuring every pack has the exact same weight.
How It Works: Simplicity Meets Precision
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Product Loading: The operator fills the product hopper.
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Initiate Cycle: The operator places an empty container on the weighing pan and initiates the cycle (e.g., via foot pedal or button).
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Precision Dosing: The screw auger rotates, dispensing the product. The integrated scale continuously monitors the weight in real-time.
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Automatic Stop: Once the target weight is reached, the screw automatically stops, ensuring a perfect fill every time.
Technical Specifications at a Glance
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Dosing Type: Gravimetric (by weight)
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Operation Mode: Semi-Automatic
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Control System: Microprocessor-based with digital weight display
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Weighing Sensor: High-precision strain gauge
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Typical Applications: Powders, granules, salt/sugar scrubs, hookah tobacco
| Parameter | Typical Specifications / Description |
|---|---|
| Dosing Principle | Gravimetric (by weight) |
| Product Type | Paste-like, viscous, semi-solid products |
| Power Supply | 220V / 50Hz or 380V / 50Hz |
| Dosing Range | Varies by model (e.g., 1-20 ml, 30-300 ml, 50-500 ml) |
| Accuracy | Varies (e.g., ±0.5%) |
| Productivity | Varies by volume (e.g., 10-50 doses/minute) |
| Control System | PLC Controller |
| Construction | Food-grade stainless steel (e.g., AISI 304) |
🔧 Industry Insights and Operational Principles
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Gravimetric vs. Volumetric Dosing: Unlike volumetric dosers that dispense by volume, gravimetric systems measure by mass, providing much higher accuracy, especially for products whose density might vary.
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Working Principle: Screw feeders are volumetric devices where the delivered amount depends on the screw’s geometry (flight diameter, pitch) and its rotation speed. In a gravimetric system, this is coupled with a scale that provides feedback to the controller to adjust the screw and achieve the target weight.
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Handling Challenging Products: Screw dosers are well-suited for cohesive, adhesive, and non-free-flowing materials, which include many paste-like products. The screw action helps shear and move these materials reliably from the hopper.
Key Features.
Precision Gravimetric Dosing: Achieves high accuracy with a built-in weighing pan and strain gauge sensor, ensuring each dose meets the exact target weight.
Versatile Application: Ideal for a wide range of products including food powders, cosmetic scrubs (salt/sugar), and hookah tobacco.
Semi-Automatic Operation: Simple, user-friendly design that increases packaging speed and consistency while requiring minimal operator training.
Robust Screw Mechanism: The auger screw system ensures consistent product flow and handling of various consistencies without segregation.
Durable Floor-Standing Design: Stable construction for reliable performance in industrial environments.
📜 Schedule virtual airflow visualization test.
💡 Mention your: Target market (EU/US/Global South), Active ingredient, Required throughput.
🔬 Schedule virtual factory acceptance test with our engineers.
🏷️ Request Compliance Audit: Free gap analysis with throughput simulation.
🔍Ready to Eliminate Production Bottlenecks?
💎Need Industrial Production Automation?
✅ GMP Compliance Guarantee
✅ 24/7 Multilingual Support
✅ 24-month performance guarantee
✅ Local technicians in 18 countries
📈Start small, get a free production layout designed for your growth trajectory. Scale smarter with engineering support!
📥Free line configuration for your products, throughput validation testing!
🎓Contact Specialists for Packaging Equipment:
📄 On-Demand Engineering: Product-specific configurations in 1-2 weeks.
🔧 Spare Parts Kits: Region-specific inventory for <24hr delivery.
🧼Compliance Roadmap:
- CE, EAC, ISO 9001 certifications.
- GMP-ready: 316L SS contact parts, CIP/SIP capabilities.
- ATEX options for chemical solvents.























