Sanitary Napkin Raw Materials: Composition and Key Components

June 26, 2025 / By

# Sanitary Napkin Raw Materials: Composition and Key Components

## Introduction to Sanitary Napkin Materials

Sanitary napkins are essential feminine hygiene products designed to absorb menstrual flow. The quality and composition of raw materials directly impact the product’s effectiveness, comfort, and safety. Modern sanitary napkins consist of multiple layers, each serving specific functions while working together to provide optimal protection.

## Core Components of Sanitary Napkins

### 1. Top Sheet (Cover Stock)

The top layer that comes in direct contact with the skin is typically made from:

– Non-woven fabric (polypropylene or polyethylene)
– Perforated plastic film
– Cotton or cotton-blend materials

This layer must be soft, breathable, and allow quick liquid penetration while keeping the surface dry.

### 2. Absorbent Core

The central absorbent layer usually contains:

– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Sometimes blended with cotton or rayon

This core determines the pad’s absorbency capacity and liquid retention properties.

### 3. Back Sheet

The bottom waterproof layer is typically composed of:

– Polyethylene or polypropylene film
– Breathable microporous films

– Sometimes fabric-like materials for comfort

This layer prevents leakage while allowing some breathability.

### 4. Adhesive Components

Key adhesive elements include:

– Pressure-sensitive adhesive for panty attachment
– Hot melt adhesives for layer bonding
– Release paper for protecting the adhesive before use

## Additional Features and Materials

### Wings and Side Barriers

Many modern pads include:

– Non-woven wing materials
– Elastic components for better fit
– Barrier leg cuffs to prevent side leakage

### Fragrance and Additives

Some products may contain:

– Deodorizing agents
– Aloe vera or chamomile extracts
– Antimicrobial treatments

## Safety and Quality Considerations

Manufacturers must ensure:

– Hypoallergenic materials
– Absence of harmful chemicals
– Compliance with international safety standards
– Biodegradable or eco-friendly options

## Environmental Aspects

Recent developments focus on:

– Organic cotton alternatives
– Biodegradable SAP
– Compostable back sheets
– Reduced plastic content

Understanding these raw materials helps consumers make informed choices about the products they use during menstruation, considering factors like comfort, protection, and environmental impact.