# Sanitary Pads Raw Material Composition and Properties

Sanitary pads are essential hygiene products used by millions of women worldwide. Understanding the raw materials used in their production is crucial for ensuring quality, comfort, and safety. This article delves into the composition and properties of the raw materials commonly 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 materials that contribute to the overall functionality 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 impermeable to liquids but allow air to pass through, ensuring breathability.

### 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 are designed to be strong enough to hold the pad in place but gentle enough to be easily removed without 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

Materials used in the top sheet and absorbent core must be soft and gentle on the skin to prevent irritation and discomfort during use.

### Absorbency and Retention

The absorbent core must have high absorbency and retention capabilities to effectively manage menstrual flow and prevent leakage.

### Breathability

Both the top sheet and back sheet should allow air to circulate, reducing the risk of skin irritation and maintaining a comfortable environment.

### Leakage Prevention

The back sheet must be impermeable to liquids to prevent leakage, while the adhesive must securely hold the pad in place.

### Hypoallergenic

All materials used should be hypoallergenic to minimize the risk of allergic reactions and ensure safety for all users.

## Conclusion

The raw materials used in sanitary pads play a critical role in determining the product’s performance, comfort, and safety. By understanding the composition and properties of these materials, manufacturers can produce high-quality sanitary pads that meet the needs of users worldwide.