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 effectiveness 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 about the products they use.

## Core Components of Sanitary Pad Raw Materials

### 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 fabric (polypropylene or polyethylene)
– Perforated film
– Cotton or bamboo fiber blends

Key properties: Softness, breathability, quick-drying capability

### 2. Absorbent Core

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

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

The absorbent core can hold 10-50 times its weight in liquid, depending on the quality and composition.

### 3. Back Sheet

The back sheet prevents leakage and keeps moisture from transferring to clothing. Materials include:

– Polyethylene film
– Breathable microporous films
– Biodegradable materials like PLA (polylactic acid)

### 4. Adhesive Components

These include:

– Pressure-sensitive adhesive for pad attachment to underwear
– Construction adhesives to bond layers together

## 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 gels

### 3. Eco-Friendly Alternatives

– Organic cotton
– Bamboo fiber
– Biodegradable SAP
– Cornstarch-based plastics

## Material Properties and Performance Factors

### Absorption Capacity

Determined by:

– SAP quality and quantity
– Fluff pulp density
– Layer construction

### Breathability

Affected by:

– Top sheet material
– Back sheet porosity
– Overall thickness

### Skin Safety

Important considerations:

– Hypoallergenic materials
– pH balance
– Absence of harmful chemicals (dioxins, chlorine, fragrances)

## Future Trends in Sanitary Pad Materials

The industry is moving toward:

– Increased use of sustainable, biodegradable materials
– Development of thinner pads with higher absorption
– Incorporation of smart materials for health monitoring
– Improved comfort technologies

Understanding the composition and properties of sanitary pad raw materials empowers consumers to choose products that align with their needs for comfort, protection, and environmental responsibility.