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# Sanitary Pads Raw Material Composition and Properties

Sanitary pads are essential personal care products designed to provide comfort and hygiene during menstruation. Understanding the raw materials used in their production is crucial for both manufacturers and consumers. 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 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.

– Non-woven fabrics: These are made from synthetic fibers like polypropylene or polyethylene, which are lightweight and soft.
– Perforated films: These are thin plastic films with tiny holes that allow moisture to pass through while keeping the surface dry.

### 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: This is a highly absorbent material made from wood pulp. It provides bulk and helps distribute the fluid evenly.
– Superabsorbent polymers (SAP): These are synthetic materials that can absorb and retain large amounts of liquid relative to their own mass. They are often used in granular form within the core.

### Back Sheet

The back sheet is the outermost layer of the sanitary pad, designed to prevent leakage. It is typically made from a waterproof material like polyethylene film.

– Polyethylene film: This is a durable, flexible, and waterproof material that ensures the pad does not leak.

### Adhesive

Adhesive is used to secure the sanitary pad to the underwear. It is usually a pressure-sensitive adhesive that is safe for skin contact.

– Pressure-sensitive adhesive: This type of adhesive forms a bond when pressure is applied, ensuring the pad stays in place without causing irritation.

## Properties of Raw Materials

The raw materials used in sanitary pads are selected based on several key properties:

– Absorbency: The ability to absorb and retain liquid is crucial for the absorbent core.
– Softness: The top sheet must be soft to ensure comfort during use.
– Breathability: Materials should allow air to circulate to prevent discomfort and irritation.
– Leakage prevention: The back sheet must be impermeable to liquids to prevent leaks.
– Skin safety: All materials should be hypoallergenic and safe for prolonged skin contact.

## Conclusion

Understanding the raw materials used in sanitary pads and their properties is essential for ensuring the production of high-quality, comfortable, and effective products. By selecting the right materials, manufacturers can create sanitary pads that meet the needs of consumers, providing both comfort and reliability during menstruation.