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 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 bamboo fiber blends

Key properties: Softness, breathability, quick-dry capability

### 2. Absorbent Core

This is the most crucial component that determines absorption capacity. Common materials include:

– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)

– Airlaid paper
– Cotton or rayon fibers

Absorption capacity typically ranges from 10-30 times its weight in liquid

### 3. Back Sheet

The waterproof layer prevents leakage. Materials include:

– Polyethylene film
– Breathable microporous films
– Biodegradable PLA films

Properties: Liquid-proof, breathable, flexible

### 4. Adhesive Components

– Pressure-sensitive adhesives for wing attachment
– Hot melt adhesives for layer bonding
– Skin-friendly adhesives for pad attachment to underwear

## Specialized Materials in Premium Pads

### 1. Odor Control Additives

– Activated charcoal
– Baking soda
– Antimicrobial agents

### 2. Comfort Enhancers

– Aloe vera coatings
– Vitamin E treatments
– Cooling gel components

### 3. Eco-friendly Alternatives

– Organic cotton
– Bamboo fiber
– Biodegradable polymers
– Cornstarch-based materials

## Material Properties and Performance

### Absorption Characteristics

– Absorption rate: How quickly fluid is drawn in
– Retention capacity: Ability to hold fluid under pressure
– Rewet value: Measurement of surface dryness

### Comfort Factors

– Breathability index
– Surface friction coefficient
– Flexibility and conformability

### Safety Standards

– pH balanced materials
– Hypoallergenic components
– Dermatologically tested materials

## Future Material Trends

The sanitary pad industry is moving toward:

– Increased use of sustainable and biodegradable materials
– Development of smarter materials with enhanced functionality
– Improved breathability while maintaining protection
– Integration of natural antibacterial properties

Understanding these material compositions helps consumers select products that match their needs for comfort, protection, and environmental considerations.