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 ensuring quality, comfort, and safety. This article delves into the composition and properties of the primary raw materials used in sanitary pads.

## 1. Absorbent Core

The absorbent core is the heart of a sanitary pad, responsible for absorbing menstrual flow. It is typically made from a combination of the following materials:

– **Wood Pulp**: A natural, biodegradable material that provides excellent absorbency.
– **Superabsorbent Polymers (SAP)**: These synthetic materials can absorb and retain large amounts of liquid, enhancing the pad’s efficiency.

## 2. Top Sheet

The top sheet is the layer that comes into direct contact with the skin. It needs to be soft, comfortable, and quick-drying. Common materials include:

– **Nonwoven Fabrics**: Made from synthetic fibers like polypropylene, these fabrics are soft and allow for quick liquid penetration.
– **Perforated Films**: These provide a smooth surface and help in quick absorption of menstrual flow.

## 3. Back Sheet

The back sheet is the outermost layer that prevents leakage. It is usually made from:

– **Polyethylene Film**: A waterproof material that ensures no leakage occurs.
– **Breathable Films**: These allow air circulation, reducing the risk of skin irritation and discomfort.

## 4. Adhesives

Adhesives are used to keep the sanitary pad in place. They are typically made from:

– **Hot Melt Adhesives**: These are applied in a molten state and solidify upon cooling, providing a strong bond.
– **Pressure-Sensitive Adhesives**: These adhere to surfaces upon application of light pressure, ensuring the pad stays in place.

## 5. Release Paper

Release paper is used to protect the adhesive before use. It is usually made from:

– **Silicone-Coated Paper**: This ensures easy removal and prevents the adhesive from sticking prematurely.

## Properties of Sanitary Pad Materials

The materials used in sanitary pads must possess specific properties to ensure they function effectively:

– **Absorbency**: High absorbency is crucial for managing menstrual flow efficiently.
– **Softness**: The materials should be soft to prevent skin irritation.
– **Breathability**: Good air circulation helps in maintaining skin health.
– **Leakage Protection**: The materials must prevent any leakage to ensure user confidence.
– **Biodegradability**: Eco-friendly materials are increasingly preferred to reduce environmental impact.

Understanding the composition and properties of sanitary pad raw materials helps in making informed choices and ensures the production of high-quality, comfortable, and safe hygiene products.