Sanitary Pads Raw Material Composition and Properties

# 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.

## 1. Absorbent Core

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

– **Wood Pulp**: A natural, biodegradable material that provides excellent absorbency.
– **Super Absorbent Polymer (SAP)**: A synthetic material that can absorb and retain large amounts of liquid relative to its own mass.

### Properties:
– **High Absorbency**: Both wood pulp and SAP contribute to the pad’s ability to absorb menstrual fluid efficiently.
– **Softness**: The materials are chosen for their soft texture to ensure comfort.

## 2. Top Sheet

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

– **Nonwoven Fabric**: Made from synthetic fibers like polypropylene or polyethylene, which are soft and breathable.

### Properties:
– **Softness**: Ensures comfort during use.
– **Quick-Drying**: Helps to keep the skin dry and reduce irritation.

## 3. Back Sheet

The back sheet is the outermost layer of the sanitary pad, designed to prevent leakage and provide a barrier against moisture.

– **Polyethylene Film**: A thin, flexible plastic film that is impermeable to liquids.

### Properties:
– **Leak-Proof**: Prevents menstrual fluid from leaking through the pad.
– **Flexibility**: Allows the pad to conform to the body’s shape for a secure fit.

## 4. Adhesive

Adhesives are used to secure the sanitary pad to the underwear.

– **Pressure-Sensitive Adhesive**: A type of adhesive that sticks to surfaces when pressure is applied.

### Properties:
– **Strong Adhesion**: Ensures the pad stays in place during use.
– **Skin-Friendly**: Designed to be gentle on the skin and easy to remove.

## 5. Fragrance and Additives

Some sanitary pads include fragrances or additives to enhance user experience.

– **Fragrance**: Added to mask odors.
– **Aloe Vera or Chamomile**: Added for their soothing properties.

### Properties:
– **Odor Control**: Helps to keep the pad smelling fresh.
– **Skin Soothing**: Provides additional comfort and reduces irritation.

## Conclusion

The raw materials used in sanitary pads are carefully selected to ensure they provide the necessary absorbency, comfort, and protection. Understanding these materials and their properties can help consumers make informed choices and appreciate the technology behind these essential products.