Sanitary Pad Raw Material Composition and Properties

# 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 performance of these products largely depend on the raw materials used in their construction. Understanding the composition and properties of sanitary pad materials helps consumers make informed choices and manufacturers improve product quality.

## Core Components of Sanitary Pads

### 1. Top Sheet (Cover Layer)

Keyword: sanitary pad raw material

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 bamboo fiber blends

Key properties:

Softness, breathability, and quick-drying capabilities are essential for comfort. The material must also be hypoallergenic to prevent skin irritation.

### 2. Absorbent Core

This is the central layer responsible for fluid absorption. Common materials include:

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

Absorption properties:

The core must have high absorbency, good retention capacity, and effective liquid distribution to prevent leakage. SAP can absorb many times its weight in fluid.

### 3. Back Sheet

The waterproof bottom layer is usually composed of:

– Polyethylene film
– Breathable microporous films
– Biodegradable alternatives like PLA (polylactic acid)

Important characteristics:

This layer must be completely leak-proof while allowing some breathability to reduce moisture buildup. Some modern pads use environmentally friendly materials.

## Additional Components

### 1. Adhesives

– Pressure-sensitive adhesives for pad attachment
– Hot melt adhesives for layer bonding

### 2. Release Paper

– Silicon-coated paper for protecting adhesives before use

### 3. Fragrance Additives (optional)

– Some pads include odor-control additives

## Material Properties Comparison

## Environmental Considerations

With growing environmental awareness, manufacturers are exploring sustainable alternatives:

Organic cotton top sheets

Bamboo fiber components

Biodegradable back sheets

Reduced SAP content

## Conclusion

Understanding sanitary pad raw materials helps consumers select products that match their needs for comfort, absorption, and environmental impact. As technology advances, we can expect continued improvements in material composition and properties, leading to better performance and more eco-friendly options in feminine hygiene products.