# Sanitary Napkin Raw Materials: Key Components and Their Functions

Introduction to Sanitary Napkin Components

Sanitary napkins are essential feminine hygiene products designed to absorb menstrual flow. The effectiveness and comfort of these products depend on carefully selected raw materials that work together to provide protection, comfort, and hygiene. Understanding these components helps consumers make informed choices about the products they use.

Core Materials in Sanitary Napkin Production

1. Top Sheet (Cover Stock)

The top sheet is the layer that comes in direct contact with the skin. It’s typically made from:

• Non-woven polypropylene fabric
• Perforated plastic film
• Soft cotton-like materials

This layer needs to be soft, non-irritating, and quick-drying to keep the skin feeling fresh. Many premium products now use breathable materials to enhance comfort.

2. Absorbent Core

The absorbent core is the heart of the sanitary napkin, responsible for fluid retention. It consists of:

• Fluff pulp (wood cellulose)
• Superabsorbent polymers (SAP)
• Sometimes blended with cotton or rayon

The SAP can absorb many times its weight in liquid, transforming it into gel to prevent leakage and maintain dryness.

3. Back Sheet

The back sheet prevents leakage and protects clothing. Common materials include:

• Polyethylene film
• Microporous breathable films
• Non-woven fabric composites

Modern back sheets are designed to be both leak-proof and breathable to reduce moisture buildup.

Additional Functional Components

4. Adhesive Strips

These keep the napkin securely in place in underwear. They typically use:

• Pressure-sensitive adhesives
• Hypoallergenic formulations

5. Wings (Side Flaps)

Many napkins feature wings made from:

• Non-woven materials
• With adhesive tips for secure fastening

These help prevent side leakage and keep the pad in position.

6. Release Paper

This protective layer covers the adhesive before use, usually made from:

• Silicone-coated paper
• Plastic film

Specialty Materials in Premium Products

Higher-end sanitary napkins may incorporate:

• Aloe vera or vitamin E coatings for skin care
• Antibacterial agents to control odor
• Fragrance-free formulations for sensitive skin
• Biodegradable materials for eco-friendly options

Quality and Safety Considerations

Manufacturers must ensure all materials:

• Are dermatologically tested
• Free from harmful chemicals
• Meet regulatory standards
• Provide consistent performance

Consumers should look for products that disclose their material composition and have appropriate safety certifications.

Conclusion

The combination of these carefully selected sanitary napkin raw materials creates products that offer protection, comfort, and discretion during menstruation. As technology advances, we continue to see innovations in materials that improve performance while addressing environmental