# Sanitary Pads Raw Material Composition and Properties

Sanitary pads are essential hygiene products used by millions of women worldwide. Understanding the raw materials that go into their production is crucial for both manufacturers and consumers. This article delves into the composition and properties of the raw materials used in sanitary pads.

## Core Components of Sanitary Pads

The primary components of sanitary pads include the top sheet, absorbent core, back sheet, and adhesive. Each of these components is made from specific raw materials that contribute to the overall functionality and comfort of the pad.

### Top Sheet

The top sheet is the layer that comes into direct contact with the skin. It is typically made from non-woven fabrics or perforated films. The materials used must be soft, breathable, and quick-drying to ensure comfort and prevent irritation.

### Absorbent Core

The absorbent core is the heart of the sanitary pad, responsible for absorbing and retaining menstrual fluid. It is usually composed of a blend of fluff pulp and superabsorbent polymers (SAP). Fluff pulp provides bulk and structure, while SAP enhances the pad’s absorbency and retention capabilities.

### Back Sheet

The back sheet is the outermost layer of the sanitary pad, designed to prevent leakage. It is commonly made from polyethylene or polypropylene films, which are waterproof yet breathable. This layer ensures that the pad remains discreet and comfortable during use.

### Adhesive

Adhesives are used to secure the sanitary pad in place within the underwear. These adhesives are typically pressure-sensitive and made from synthetic rubber or acrylic compounds. They must be strong enough to hold the pad in place but gentle enough to avoid damaging the fabric of the underwear.

## Properties of Raw Materials

The raw materials used in sanitary pads must possess specific properties to ensure the product’s effectiveness and user comfort. These properties include:

### Absorbency

High absorbency is crucial for the absorbent core to effectively manage menstrual flow. The combination of fluff pulp and SAP ensures that the pad can absorb and retain large amounts of fluid without leakage.

### Softness

The top sheet must be soft to prevent skin irritation and ensure comfort during prolonged use. Non-woven fabrics and perforated films are chosen for their gentle texture.

### Breathability

Breathability is essential to prevent moisture buildup and maintain skin health. The top sheet and back sheet materials are designed to allow air circulation, reducing the risk of discomfort and irritation.

### Leakage Prevention

The back sheet and absorbent core work together to prevent leakage. The waterproof properties of the back sheet, combined with the high absorbency of the core, ensure that the pad remains secure and effective throughout use.

### Adhesive Strength

The adhesive must provide a strong hold to keep the pad in place without causing damage to the underwear. Pressure-sensitive adhesives are chosen for their balance of strength and gentleness.

## Conclusion

Understanding the raw materials used in sanitary pads and their properties is essential for producing high-quality, comfortable, and effective products. By carefully selecting and combining these materials, manufacturers can create sanitary pads that meet the diverse needs of women worldwide.