# Sanitary Napkin Raw Materials: Composition and Sources

## Introduction to Sanitary Napkin Components

Sanitary napkins, essential feminine hygiene products, are composed of carefully selected materials designed for comfort, absorption, and protection. Understanding these raw materials helps consumers make informed choices about the products they use during menstruation.

## Core Materials in Sanitary Napkins

### 1. Top Sheet (Cover Stock)

The top layer that comes in direct contact with the skin is typically made from:

– Non-woven polypropylene (most common)
– Perforated plastic film
– Cotton or bamboo fabric (for organic options)

This layer allows liquid to pass through while keeping the skin dry.

### 2. Absorbent Core

The middle layer responsible for fluid absorption consists of:

– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Combination of both materials

The ratio of these components determines the product’s absorption capacity.

### 3. Back Sheet

The waterproof bottom layer is usually composed of:

– Polyethylene film
– Breathable microporous film
– Biodegradable materials in eco-friendly options

This layer prevents leaks and keeps moisture from reaching clothing.

## Additional Components

### 1. Adhesives

– Pressure-sensitive adhesive for panty attachment
– Construction adhesives to bond layers together

### 2. Release Paper

Protects the adhesive before use, typically made from silicone-coated paper or plastic film.

### 3. Packaging Materials

– Polyethylene bags
– Cardboard boxes
– Biodegradable wrappers for eco-friendly brands

## Sources of Raw Materials

### 1. Natural Sources

– Wood pulp from sustainable forestry
– Organic cotton from certified farms
– Bamboo from fast-growing plantations

### 2. Synthetic Sources

– Petrochemical-derived polymers
– Laboratory-produced superabsorbent materials

### 3. Recycled Materials

Some manufacturers incorporate:

– Recycled plastics
– Post-consumer waste materials
– Industrial byproducts

## Environmental Considerations

With growing environmental awareness, manufacturers are exploring:

– Biodegradable materials
– Compostable components
– Reduced plastic content
– Sustainable sourcing practices

## Conclusion

Understanding the composition of sanitary napkins helps consumers choose products that align with their needs and values, whether prioritizing absorption, comfort, or environmental impact. As technology advances, we continue to see innovations in materials that improve both performance and sustainability in feminine hygiene products.