What Is Rotary Cutter?
Direct Answer
A rotary cutter is a high-speed rotating die that cuts diapers and pads into their final contoured shape on the production line.
Key Takeaways
- A rotary cutter is a high-speed rotating die that cuts diapers and pads into their final contoured shape on the production line.
- How it works: Matching rotary dies press against the web, cutting the product contour (and leg-hole curves for pants) at line speed, with waste trimmed and removed..
- Cutting hourglass diaper contours
- Die sharpness and alignment determine edge quality — dull dies fray nonwoven edges
How Rotary Cutter Works
Matching rotary dies press against the web, cutting the product contour (and leg-hole curves for pants) at line speed, with waste trimmed and removed.
Examples and Applications
- Cutting hourglass diaper contours
- Punching pull-up leg openings
Rotary Cutter vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| Die-cutting knife | Rotary Cutter | Rotary cutters run continuously at speed; die-cutting knives punch single products |
Limitations and Common Misconceptions
- Die sharpness and alignment determine edge quality — dull dies fray nonwoven edges
- It works in sync with tension control to avoid distortion
How do diapers get their hourglass shape?
High-speed rotary dies cut the contour as the web moves, producing the shaped product continuously at line speed.
References
- JP CIA (industry) - Baby diaper material: key components and their functions — 行业媒体 (accessed 2026-08-02)
- EDANA - What are nonwovens? (ISO 9092 / CEN EN 29092 definition) — EDANA (accessed 2026-08-02)