| Typical Production Speed | 300–500 pieces/minute | 600–900 pieces/minute | 1,000–1,500 pieces/minute | Higher speed can reduce unit labor cost, but it requires stable raw materials, accurate tension control, and stronger quality inspection. | Choose according to confirmed orders rather than maximum advertised speed. |
| Practical Output at 85% Overall Efficiency | 153,000–255,000 pieces per 8-hour shift | 306,000–459,000 pieces per 8-hour shift | 510,000–765,000 pieces per 8-hour shift | Actual output is affected by changeovers, maintenance, material replacement, rejects, and operator skill. | Use practical output for capacity planning instead of theoretical line speed. |
| Automation Level | Automatic forming with partial manual material changes | Automatic feeding, forming, sealing, counting, and bagging | Automatic splicing, servo control, vision inspection, counting, bagging, and carton interface | Automation improves consistency and lowers dependence on manual handling. | Standard automatic systems usually provide the best balance for medium-scale production. |
| Main Drive and Motion Control | Motor-driven system with basic speed adjustment | Servo-controlled forming and synchronization sections | Multi-axis servo control with recipe management and synchronized web handling | Servo synchronization helps maintain product length, shape, and sealing accuracy at higher speeds. | Use multi-axis servo control when producing several sizes or designs. |
| Supported Product Length | Approximately 240–360 mm | Approximately 240–420 mm | Approximately 240–450 mm, subject to tooling | A wider size range supports day, night, winged, and longer products without replacing the complete line. | Confirm the required size range before ordering forming molds and sealing tools. |
| Core-Forming Accuracy | Typical basis-weight variation: ±5% to ±8% | Typical basis-weight variation: ±3% to ±5% | Typical basis-weight variation: approximately ±2% to ±3% with controlled materials | Stable absorbent-core distribution improves comfort, absorption uniformity, and finished-product consistency. | Prioritize automatic metering and closed-loop tension control for premium products. |
| Product-Length Accuracy | Typically within ±2.0–3.0 mm | Typically within ±1.0–2.0 mm | Typically within ±0.5–1.0 mm under stable operating conditions | Accurate cutting and forming reduce material waste and improve package appearance. | Request test-run samples using the buyer’s actual raw materials. |
| Seal Quality | Heat-sealing with basic temperature control | Independent temperature and pressure control for key sealing zones | Multi-zone sealing with automatic temperature monitoring and alarm functions | Consistent sealing helps prevent leakage, delamination, and package-opening defects. | Select multi-zone control when using breathable films or high-speed packaging. |
| Quality Inspection | Manual sampling inspection | Online counting, sensor detection, and periodic sampling | Online vision inspection for missing components, position errors, contamination, and sealing defects | Online inspection detects defects earlier and reduces the risk of defective products reaching customers. | Vision inspection is strongly recommended for export and private-label production. |
| Typical Reject-Rate Target | Below 3% after process stabilization | Below 2% after process stabilization | Below 1% after process stabilization | Reject rates depend on raw-material quality, product design, machine setup, and operator training. | Treat these figures as engineering targets, not guaranteed results. |
| Changeover Time | Approximately 45–90 minutes | Approximately 25–60 minutes | Approximately 15–40 minutes with recipe storage and quick-change tooling | Shorter changeovers are valuable when producing multiple sizes, absorbency levels, or packaging formats. | Choose recipe management if the product portfolio contains several SKUs. |
| Labor Requirement per Line | Typically 4–6 operators per shift | Typically 2–4 operators per shift | Typically 2–3 operators per shift, excluding maintenance and quality personnel | Labor demand depends on packaging integration, factory layout, automation, and local safety procedures. | Compare labor savings against the cost and complexity of automation. |
| Electrical and Utility Needs | Lower installed power; compressed-air demand is generally moderate | Medium installed power with controlled compressed-air consumption | Higher installed power and compressed-air demand; requires stable utilities | Insufficient power quality or air pressure can cause misfeeds, sealing faults, and unplanned downtime. | Verify voltage, frequency, air pressure, and total connected load before installation. |
| Best-Fit Production Scenario | Start-ups, regional sales, pilot production, and limited SKU ranges | Medium-scale factories, contract manufacturing, and stable domestic demand | Large-volume production, export orders, multiple shifts, and premium product portfolios | The best machine is the one that matches forecast demand, product requirements, workforce, and available floor space. | For most buyers, the standard automatic configuration offers the strongest overall balance. |
| Recommended Acceptance Tests | Verify speed, practical output, product dimensions, absorbent-core distribution, seal strength, reject rate, changeover time, noise, safety interlocks, and continuous operation using agreed raw materials. | Factory acceptance testing reduces the risk of performance differences between demonstrations and daily production. | Make acceptance criteria measurable and include them in the purchase contract. |
| Data note: The figures above are non-branded, indicative engineering ranges commonly used for sanitary napkin production-line comparison. Actual performance varies with product structure, raw materials, machine configuration, operator skill, maintenance quality, and factory utilities. |