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 used by millions of women worldwide. The quality and comfort 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:

– Polypropylene non-woven fabric
– Perforated plastic film
– Cotton or bamboo fiber blends

Key properties:
– Soft and comfortable texture
– Quick-drying surface
– Hypoallergenic materials
– Breathable structure

### 2. Absorbent Core

The absorbent core is the most important functional component:

– Wood pulp (fluff pulp)
– Superabsorbent polymers (SAP)
– Combination of both materials

Absorption characteristics:
– High liquid retention capacity
– Rapid absorption rate
– Excellent distribution properties
– Minimal rewetting

### 3. Back Sheet

The back sheet prevents leakage and provides structural integrity:

– Polyethylene film
– Breathable microporous films
– Non-woven fabric composites

Essential features:
– Liquid-proof barrier
– Flexible yet durable
– Moisture vapor transmission
– Noise reduction properties

### 4. Adhesive Components

Various adhesives are used in different parts:

– Hot melt adhesives for layer bonding
– Pressure-sensitive adhesives for wings
– Silicone-based release coatings

Performance requirements:
– Strong bonding strength
– Skin-friendly formulation
– Temperature resistance
– Odorless composition

## Specialized Materials in Premium Pads

### 1. Natural Fiber Options

– Organic cotton topsheets
– Bamboo charcoal layers
– Plant-based SAP alternatives

### 2. Functional Additives

– Aloe vera coatings
– Vitamin E treatments
– Antibacterial agents
– Odor-neutralizing compounds

### 3. Eco-Friendly Alternatives

– Biodegradable backsheets
– Compostable core materials
– Water-soluble adhesives

## Material Safety and Compliance

All sanitary pad materials must meet strict regulatory standards:

– FDA compliance for direct skin contact
– OEKO-TEX certification for harmful substances
– ISO standards for quality control
– Dermatologically tested formulations

Manufacturers conduct extensive testing for:
– Skin irritation potential
– Microbial safety
– Chemical migration risks
– Long-term stability

## Future Material Innovations

The sanitary pad industry continues to evolve with new material developments:

– Nanofiber technology for ultra-thin pads
– Smart materials with moisture indicators
– Sustainable and renewable resource alternatives
– Biodegradable superabsorbent polymers

These innovations aim to improve comfort, performance, and environmental impact while maintaining product safety and effectiveness.