Sanitary Pad Raw Material Composition and Properties

June 29, 2025 / By

# Sanitary Pad Raw Material Composition and Properties

## Introduction to Sanitary Pad Materials

Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow. The quality and effectiveness of these products largely depend on their raw material composition. Understanding the materials used in sanitary pad production helps consumers make informed choices and manufacturers improve product quality.

## Core Components of Sanitary Pads

### 1. Top Sheet (Cover Stock)

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

– Nonwoven polypropylene or polyethylene
– Perforated plastic films
– Cotton or other natural fibers for premium products

Key properties: Softness, breathability, and quick-drying capability

### 2. Absorbent Core

This is the most critical component that determines the pad’s absorption capacity. Common materials include:

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

The SAP can absorb many times its weight in liquid, while fluff pulp provides structure and additional absorption.

### 3. Back Sheet

The back sheet prevents leakage and is usually composed of:

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

Important characteristics: Liquid impermeability, flexibility, and comfort

### 4. Adhesive Components

These include:

– Pressure-sensitive adhesives for pad attachment to underwear
– Hot melt adhesives for layer bonding
– Release paper for peel-off protection

## Additional Features and Materials

### 1. Wings and Side Barriers

Many modern pads feature:

– Extended side flaps (wings) with adhesive
– Elastic barriers to prevent side leakage
– Soft edge materials for comfort

### 2. Fragrance and Additives

Some products may contain:

– Deodorizing agents
– Aloe vera or other skin-soothing additives
– Antimicrobial treatments

Note: These additives may cause irritation for some users with sensitive skin.

## Material Properties and Performance

### Absorption Capacity

Determined by:

– SAP concentration and quality
– Fluff pulp density and distribution
– Core design and thickness

### Comfort Factors

Influenced by:

– Top sheet texture and breathability
– Overall pad thickness and flexibility
– Edge softness and design

### Safety Considerations

Important aspects include:

– Hypoallergenic materials
– Absence of harmful chemicals
– Dermatologically tested components

## Environmental Considerations

Growing concerns have led to:

– Development of biodegradable materials
– Reduction of plastic components
– Organic cotton alternatives
– Compostable packaging options

## Conclusion

The composition of sanitary pad raw materials directly affects product performance, comfort, and safety. As technology advances, we’re seeing more innovations in material science that improve both functionality and environmental sustainability. Understanding these components helps consumers choose products that best meet their needs while being mindful of health and ecological impacts.