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Sanitary Napkin Material Composition and Properties
Sanitary napkins are essential feminine hygiene products designed to absorb menstrual flow. Understanding their material composition and properties helps users make informed choices for comfort and health.
Core Absorbent Materials
The primary absorbent layer typically consists of:
- Wood pulp fluff – Provides bulk absorption capacity
- Superabsorbent polymers (SAP) – Gel-forming materials that lock in moisture
- Air-laid paper – Enhances liquid distribution
Surface Layer Materials
The top layer that contacts skin is usually made from:
- Nonwoven fabric – Often polypropylene for softness and quick-drying
- Perforated film – Creates a dry-feel surface
- Cotton cover – For natural fiber preference
Backsheet Materials
The waterproof backing commonly uses:
- Polyethylene film – Provides leak protection
- Breathable microporous film – Allows vapor transmission
- Biodegradable materials – Emerging eco-friendly options
Key Properties
Quality sanitary napkins exhibit these characteristics:
- High absorbency rate and capacity
- Effective liquid retention
- Soft, non-irritating surface
- Odor control features
- Secure adhesion system
Keyword: sanitary napkin material
Emerging Material Innovations
Recent developments include:
- Plant-based SAP from starch
- Antibacterial bamboo charcoal layers
- Compostable PLA nonwovens
- Nanofiber technology for ultra-thin designs
Understanding these material aspects helps consumers select products that balance performance, comfort, and environmental considerations for their menstrual health needs.
