PE Breathable Film
Direct Answer
PE breathable film is the 'breathable waterproof' backsheet — a polyethylene layer with microscopic pores that stops liquid but lets vapor out, reducing heat and moisture buildup.
Key Takeaways
- PE breathable film is a polyethylene backsheet layer that blocks liquid while letting water vapor escape, giving leak-proof yet breathable hygiene products.
- Base resin: Polyethylene (PE)
- Breathability mechanism: Micro-porous voids created by stretching filler-loaded film
- Vapor vs liquid: Vapor molecules pass; liquid droplets cannot
Material Properties
| Property | Typical Value | Note |
|---|---|---|
| Base resin | Polyethylene (PE) | Flexible, waterproof, low cost |
| Breathability mechanism | Micro-porous voids created by stretching filler-loaded film | Calcium carbonate fillers create pores under tension |
| Vapor vs liquid | Vapor molecules pass; liquid droplets cannot | Pore size sits between the two |
| Typical variants | Micro-porous film; cloth-like film laminates | Laminates add a nonwoven touch layer |
| Function | Reduces heat and moisture buildup in the diaper | Supports rash prevention alongside frequent changes |
Applications
- Diaper backsheets
- Sanitary pad backsheets
- Adult incontinence backsheets
Key Manufacturers & Suppliers
- Major PE film and resin producers (e.g., ExxonMobil, LyondellBasell, Toray)
- Integrated hygiene converters with in-house film extrusion
Supplier lists reflect commonly cited industry names, not endorsements. Always verify current supply arrangements directly.
Safety Notes
PE film is a stable, widely used polymer with a long safety record in skin contact. Breathable films are designed to reduce moisture; change products regularly regardless of breathability claims.