TPU Elastic Non-Woven for Sanitary Napkin: Breathable Backsheet

How TPU elastic non-woven backsheets improve comfort and reduce skin irritation in sanitary napkins

Sanitary napkins have three key layers: the top sheet (next to skin), the absorbent core, and the backsheet (outer layer). TPU elastic non-woven for sanitary napkin backsheets is a premium alternative to traditional PE film.

Here's why brands are switching to TPU backsheets.

The Problem with Traditional PE Backsheets

Polyethylene (PE) film backsheets have been the industry standard for decades. They work — they block fluid leakage. But they have drawbacks:

• No breathability: Sweat and humidity are trapped against the skin, causing discomfort and rash
• Plastic feel: Users can hear and feel the plastic film — it doesn't feel like real underwear
• No elasticity: The backsheet doesn't stretch with body movement, leading to gaps and leaks

How TPU Backsheets Solve These Issues

TPU Backsheet Construction

Laminate structure: TPU film (5-20 μm) is laminated to a non-woven substrate (PP or PET, 15-30 g/m²). The non-woven provides strength and a textile-like feel; the TPU film provides the fluid barrier.

Breathability mechanism: Microporous TPU or hydrophilic TPU allows water vapor transmission while blocking liquid water. The MVTR can be tuned for the target market (higher MVTR for premium products).

Elasticity: The TPU component adds stretch, allowing the napkin to conform to body movement without bunching or gap formation.

Market Positioning

• Premium segment: TPU backsheets position the product as "premium" or "ultra-breathable" — justifying higher price points
• Sensitive skin: Marketing can highlight reduced rash and irritation due to better breathability
• Sustainability story: TPU is recyclable (unlike multilayer PE films with adhesives) — a growing selling point

Contact us to discuss TPU backsheet materials for your sanitary napkin line. We can provide samples with different MVTR and handfeel options.