Sanitary Pads Raw Material Composition and Properties

# 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 impermeable to liquids but allow air to pass through, ensuring breathability.

### Adhesive

Adhesive is used to secure the sanitary pad in place. It is typically a pressure-sensitive adhesive that is applied to the back sheet. The adhesive must be strong enough to keep the pad in place but gentle enough to be removed without causing discomfort or leaving residue.

## Properties of Raw Materials

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

### Softness and Comfort

The top sheet and absorbent core must be soft to prevent skin irritation. Non-woven fabrics and fluff pulp are chosen for their softness and ability to conform to the body’s contours.

### Absorbency and Retention

The absorbent core must have high absorbency and retention capabilities to handle menstrual flow effectively. Superabsorbent polymers are key to achieving this, as they can absorb many times their weight in liquid.

### Breathability

Breathability is essential to prevent moisture buildup and maintain skin health. The top sheet and back sheet materials are selected for their ability to allow air to circulate while keeping liquids contained.

### Leakage Prevention

The back sheet must be impermeable to liquids to prevent leakage. Polyethylene and polypropylene films are ideal for this purpose due to their liquid barrier properties.

### Adhesive Strength

The adhesive must provide a secure hold without causing discomfort. Pressure-sensitive adhesives are used because they offer a balance between strength and ease of removal.

## Conclusion

The raw materials used in sanitary pads are carefully selected to ensure the product’s effectiveness, comfort, and safety. Understanding the composition and properties of these materials helps in appreciating the engineering and design that go into creating a reliable and comfortable sanitary pad.