Sanitary Napkin Raw Materials: Essential Components for Feminine Hygiene Products

June 26, 2025 / By

# Sanitary Napkin Raw Materials: Essential Components for Feminine Hygiene Products

## Understanding the Core Materials in Sanitary Napkins

Sanitary napkins are essential feminine hygiene products used by millions of women worldwide. The effectiveness and comfort of these products depend heavily on the quality and composition of their raw materials. Modern sanitary napkins are sophisticated products that combine various materials to achieve optimal absorption, comfort, and protection.

## Primary Components of Sanitary Napkins

### 1. Top Sheet (Cover Stock)

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

– Non-woven polypropylene
– Perforated film
– Cotton-like materials

This layer needs to be soft, breathable, and quick-drying to maintain comfort while allowing liquid to pass through to the absorbent core.

### 2. Absorbent Core

The heart of the sanitary napkin, this layer is responsible for fluid retention. Common materials include:

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

The ratio of fluff pulp to SAP varies depending on the desired absorption capacity of the product.

### 3. Back Sheet

This waterproof layer prevents leakage and keeps moisture from reaching clothing. Materials used include:

– Polyethylene film
– Microporous breathable films
– Biodegradable alternatives like PLA (polylactic acid)

### 4. Adhesive Components

Various adhesives are used in sanitary napkins:

– Hot melt adhesives for layer bonding
– Pressure-sensitive adhesives for securing the pad to underwear
– Release paper for protecting the adhesive before use

## Specialized Materials in Premium Products

### 1. Odor Control Agents

Many modern sanitary napkins incorporate:

– Activated charcoal
– Baking soda
– Specialized odor-neutralizing compounds

### 2. Wetness Indicators

Some products feature:

– Color-changing technology
– Moisture-sensitive materials

### 3. Side Barriers

For better leak protection:

– Elastic barriers
– Raised edges
– Special hydrophobic materials

## Emerging Trends in Sanitary Napkin Materials

The industry is seeing significant innovation in materials:

– Biodegradable and compostable alternatives
– Organic cotton options
– Bamboo fiber components
– Antibacterial treatments using natural extracts
– Hypoallergenic formulations for sensitive skin

## Quality and Safety Considerations

All materials used in sanitary napkins must meet strict safety standards:

– Dermatologically tested
– Free from harmful chemicals
– Compliant with international regulations
– Non-irritating to sensitive skin

The selection and combination of these raw materials determine the final product’s performance, comfort level, and environmental impact. Manufacturers continue to innovate to create more effective, comfortable, and sustainable feminine hygiene solutions.