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 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 Layer)

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

– Non-woven fabric (polypropylene or polyethylene)
– Perforated film
– Cotton or bamboo fiber blends

Key properties: Softness, breathability, quick-dry capability

### 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 capacity: Ranges from 100ml to 500ml depending on product type

### 3. Back Sheet (Barrier Layer)

The back sheet prevents leakage and is usually composed of:

– Polyethylene film
– Microporous breathable film
– Biodegradable materials (in eco-friendly options)

Properties: Liquid-proof, breathable, flexible

### 4. Adhesive Components

– Pressure-sensitive adhesive for pad attachment
– Hot melt adhesive for layer bonding
– Release paper for adhesive protection

## Specialized Materials in Premium Pads

### 1. Antibacterial Additives

– Silver nanoparticles
– Chitosan
– Plant extracts (aloe, tea tree oil)

### 2. Odor Control Agents

– Activated charcoal
– Baking soda
– Fragrance microcapsules

### 3. Comfort Enhancers

– Aloe vera coating
– Vitamin E infusion
– Cooling gel components

## Material Properties and Performance Factors

### Absorption Characteristics

– Absorption rate (seconds per ml)
– Retention capacity under pressure
– Rewet performance (surface dryness)

### Safety Standards

– pH balanced (4.5-5.5)
– Hypoallergenic materials
– Free from harmful chemicals (dioxins, chlorine)

### Environmental Considerations

– Biodegradable options
– Compostable materials
– Reduced plastic content

## Future Trends in Sanitary Pad Materials

The industry is moving toward:

– Sustainable and plant-based materials
– Improved breathability technologies
– Smart materials with health monitoring capabilities
– Enhanced comfort through advanced textile engineering

Understanding these material compositions helps consumers select products that match their needs for comfort, protection, and environmental impact. Manufacturers continue to innovate with new materials to improve performance while addressing sustainability concerns.