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. These materials are chosen for their softness, breathability, and ability to quickly wick moisture away from the skin.

### 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 by turning liquid into gel.

### 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

Adhesive is used to secure the sanitary pad to the underwear. It is typically a pressure-sensitive adhesive that provides a strong yet gentle hold. The adhesive must be hypoallergenic to prevent skin irritation.

## Properties of Raw Materials

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

### Softness and Comfort

The top sheet and back sheet materials must be soft and comfortable to prevent irritation and chafing. Non-woven fabrics and perforated films are chosen for their gentle touch and breathability.

### Absorbency and Retention

The absorbent core must have high absorbency and retention capabilities to handle varying flow levels. The combination of fluff pulp and SAP ensures that the pad can absorb and lock in moisture effectively.

### 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 waterproof properties.

### Hypoallergenic and Skin-Friendly

All materials used in sanitary pads must be hypoallergenic to minimize the risk of allergic reactions. This is particularly important for the adhesive and top sheet, which are in direct contact with the skin.

## Conclusion

The raw materials used in sanitary pads are carefully selected to provide comfort, absorbency, and leakage prevention. Understanding the composition and properties of these materials helps in appreciating the engineering behind this essential hygiene product. As technology advances, we can expect further improvements in the materials used, enhancing the overall user experience.