Sanitary Pad Raw Material Composition and Properties

# Sanitary Pad Raw Material Composition and Properties

## Introduction to Sanitary Pad Components

Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow. The effectiveness and comfort of these products largely depend on the quality and composition of their raw materials. Modern sanitary pads consist of multiple layers, each serving a specific purpose in absorption, comfort, and protection.

## Core Materials in Sanitary Pads

### Top Sheet (Cover Layer)

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

– Non-woven polypropylene or polyethylene
– Perforated plastic films
– Cotton or cotton blends for premium products

Key properties: Softness, breathability, and quick liquid transfer to the absorption layer.

### Absorbent Core

This is the most crucial component that determines the pad’s effectiveness. Common materials include:

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

The absorbent core can hold 10-50 times its weight in liquid, depending on quality.

### Back Sheet

The bottom layer prevents leakage and is usually composed of:

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

Properties: Liquid-proof, flexible, and comfortable against clothing.

## Additional Components

### Adhesive Layer

– Pressure-sensitive adhesive for panty attachment
– Non-slip silicone dots for better grip

### Release Paper

– Protects the adhesive before use
– Typically made from silicone-coated paper

## Material Properties and Performance

### Absorption Capacity

The combination of fluff pulp and SAP determines:

– Absorption speed
– Retention capacity
– Anti-leakage performance

### Breathability

High-quality materials allow:

– Better air circulation
– Reduced skin irritation
– Lower risk of bacterial growth

### Skin Safety

Premium materials ensure:

– Hypoallergenic properties
– pH balance maintenance
– Reduced friction and irritation

## Environmental Considerations

Recent developments include:

– Biodegradable top sheets from bamboo or corn fibers
– Plant-based SAP alternatives
– Compostable back sheets

Manufacturers are increasingly focusing on sustainable raw materials without compromising performance.

## Conclusion

Understanding sanitary pad raw materials helps consumers make informed choices. The combination of advanced materials and thoughtful design creates products that offer protection, comfort, and reliability during menstruation. As technology advances, we can expect even more innovative and eco-friendly material solutions in feminine hygiene products.