What Is Topsheet?
Direct Answer
The topsheet is the soft, skin-facing layer of a diaper or pad that lets liquid pass through quickly and resists rewetting.
Key Takeaways
- The topsheet is the soft, skin-facing layer of a diaper or pad that lets liquid pass through quickly and resists rewetting.
- How it works: A hydrophilic nonwoven allows liquid to penetrate to the core while its surface stays relatively dry.
- Lotion-coated topsheets are common on 'sensitive' lines to reduce friction
- Myth: A softer topsheet is always better. Softness and liquid pass-through can trade off; the best balance depends on the baby
How Topsheet Works
A hydrophilic nonwoven allows liquid to penetrate to the core while its surface stays relatively dry. Surface treatments control wettability; some topsheets add lotion or are perforated to speed pass-through.
Examples and Applications
- Lotion-coated topsheets are common on 'sensitive' lines to reduce friction
- Apertured (perforated) topsheets speed liquid transfer and reduce pooling
Topsheet vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| Acquisition layer | Topsheet | The acquisition layer sits under the topsheet to wick liquid into the core faster |
Limitations and Common Misconceptions
- Myth: A softer topsheet is always better. Softness and liquid pass-through can trade off; the best balance depends on the baby
- Myth: Topsheet material alone prevents rash. Skin dryness depends on the whole system
What is the topsheet of a diaper?
The soft nonwoven layer that touches the baby's skin. It pulls liquid away from the skin into the absorbent core, helping skin stay dry.
What material is the topsheet made of?
Mostly polypropylene nonwoven, often with a skin-care lotion layer; Pampers uses a BreatheFree liner for fast transfer.
What is an acquisition layer (ADL)?
A layer under the topsheet that moves liquid away from skin and distributes it evenly across the core for better absorbency.
References
- Pampers Official - What's in a Pampers diaper (component materials) — 品牌官方 (accessed 2026-08-02)
- JP CIA (industry) - Baby diaper material: key components and their functions — 行业媒体 (accessed 2026-08-02)