A full servo sanitary napkin machine represents the latest generation of automation technology in feminine hygiene manufacturing. Unlike traditional machines that rely on mechanical gears or a combination of pneumatic and hydraulic systems, a full servo machine uses individual, high-precision servo motors to independently control every critical operation of the production line .
In this system, each functional unit—such as the material unwinds, the core former, the cutting dies, and the packaging section—is driven by its own dedicated servo motor -2-4. A central Programmable Logic Controller (PLC) acts as the brain, communicating with all the servo drives to ensure every action is perfectly synchronized in real-time -6-7.
This setup allows for an unparalleled level of control, enabling complex adjustments to be made “on the fly” without stopping production
The machine size of the girl’s sanitary napkin making machine is approximately 22m*2m*2.5m (based on the product provided by the client), and the machine weight is approximately 55 tons. The structure design of the whole machine is compact, beautiful, and practical. Each component has been carefully arranged to maximize space utilization without affecting its function.
The whole machine adopts a servo design (with shaft transmission system), the servo drive is used for knife mold and conveying, and the frequency conversion drive is used for uncoiling, which can realize instant speed regulation without stopping. Its design speed is 1000pcs per minute and stable work speed is 800-900pcs per minute. At the same time, its rejection rate is also very low, specifically ≤3%, excluding scrap caused by hot melt, material splicing, or joint. The product size is 240mm and can be designed according to customer product size.
Core Advantages Over Traditional Machines
The shift to full servo technology brings several key benefits:
Higher Speed & Efficiency: Servo motors can start, stop, and change speed much faster than traditional motors, enabling stable production speeds that often exceed 800 to 1000+ pads per minute -2-8-9.
Exceptional Precision: The system offers precise control over product dimensions, material tension, and glue application, resulting in consistent quality. Leading models can achieve a finished product rate of ≥98% , significantly reducing material waste -8-9.
Unmatched Flexibility: Changeovers between different product sizes (e.g., 230mm to 320mm) or styles (with or without wings) can be done quickly via the PLC’s touchscreen interface, drastically reducing downtime -2-9.
Reduced Waste & Lower Operating Costs: The system automatically rejects defective products, and the precise control minimizes scrap during startups and material splices
Key Components & Technical Specifications
A full servo machine integrates advanced sub-systems, often utilizing components from leading global brands:
| Component/Feature | Typical Specification & Benefit |
|---|---|
| Drive & Control System | Mitsubishi or equivalent servo drives and PLC for reliable, high-speed communication -2-4. |
| Core Forming | Web-wheel molding and SAP (Super Absorbent Polymer) auto-adding for precise core formation -9. |
| Material Handling | Servo unwinding with auto-tension control and automatic splicing for continuous operation without stopping to change raw material rolls -2-5-8. |
| Quality Control | Automatic inspection and rejection systems with photo-electric sensors (e.g., from SICK/Omron) to detect and eject products with missing components or defects -2-9. |
| Adhesive System | Integrated Nordson hot melt systems with individual pumps for precise glue application on backsheet, topsheet, and release papers -2. |
