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 effectiveness and comfort of these products largely depend on their raw material composition. Modern sanitary pads consist of multiple layers, each serving a specific purpose while working together to provide optimal protection and comfort.

## Core Components of Sanitary Pad Materials

### 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 plastic film
– Cotton or other natural fibers

Properties: Soft, breathable, and quick-drying to prevent skin irritation and maintain comfort.

### 2. Absorbent Core

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

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

Properties: High absorption capacity, good retention, and minimal rewet to keep the surface dry.

### 3. Back Sheet

The bottom layer prevents leakage and provides structural integrity. Materials include:

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

Properties: Liquid-proof, flexible, and often breathable to reduce moisture buildup.

### 4. Adhesive Components

These include:

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

Properties: Strong enough to secure the pad but gentle on clothing and skin.

## Specialized Materials in Premium Pads

### 1. Odor Control Additives

– Activated charcoal
– Baking soda
– Antimicrobial agents

### 2. Comfort Enhancers

– Aloe vera coating
– Vitamin E infusion
– Cooling gels

### 3. Eco-Friendly Alternatives

– Bamboo fiber
– Organic cotton
– Biodegradable SAP

## Material Properties and Performance Factors

Key performance characteristics influenced by raw materials:

– Absorption rate and capacity
– Retention under pressure
– Dryness and comfort
– Breathability
– Skin compatibility
– Environmental impact

## Future Trends in Sanitary Pad Materials

The industry is moving toward:

– More sustainable and biodegradable options
– Enhanced comfort technologies
– Improved breathability
– Smart materials with health monitoring capabilities

Understanding the composition and properties of sanitary pad raw materials helps consumers make informed choices and manufacturers develop better products. The continuous innovation in materials science promises even more comfortable, effective, and environmentally friendly solutions in feminine hygiene.