What Is Hydrophobic Nonwoven?
Direct Answer
A hydrophobic nonwoven is a fabric that repels liquid instead of absorbing it, used for leak barriers like leg cuffs and backsheets in hygiene products.
Key Takeaways
- A hydrophobic nonwoven is a fabric that repels liquid instead of absorbing it, used for leak barriers like leg cuffs and backsheets in hygiene products.
- How it works: Hydrophobic nonwovens have a high contact angle (over 90 degrees) so liquid beads up and runs off rather than soaking in.
- Diaper leg cuffs are hydrophobic nonwovens that channel liquid back toward the core
- Myth: Hydrophobic means waterproof fabric. It repels water but is not necessarily a barrier film — it prevents absorption and wicking
How Hydrophobic Nonwoven Works
Hydrophobic nonwovens have a high contact angle (over 90 degrees) so liquid beads up and runs off rather than soaking in. They are used wherever containment matters: leg cuffs, the outer backsheet cover, and waist barriers. This keeps fluid inside the core and prevents sideways escape.
Examples and Applications
- Diaper leg cuffs are hydrophobic nonwovens that channel liquid back toward the core
- The outer backsheet cover uses hydrophobic material so the diaper stays dry to the touch outside
Hydrophobic Nonwoven vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| Hydrophilic nonwoven | Hydrophobic Nonwoven | Hydrophilic absorbs and transmits liquid; hydrophobic repels it — the two work together to move liquid into the core and keep it there |
Limitations and Common Misconceptions
- Myth: Hydrophobic means waterproof fabric. It repels water but is not necessarily a barrier film — it prevents absorption and wicking
- Myth: A diaper is all absorbent. The chassis is intentionally hydrophobic to contain liquid
What is hydrophobic nonwoven used for?
Leg cuffs, backsheet covers and waist barriers that keep liquid contained in the diaper.
How does hydrophobic fabric work?
Its surface energy makes liquid bead up (contact angle over 90 degrees) so it cannot soak in or wick outward.
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)