# 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 raw materials used in sanitary pads.

## Core Components of Sanitary Pads

The primary raw materials used in sanitary pads include:

– Absorbent Core: Typically made from wood pulp and superabsorbent polymers (SAP), this layer is responsible for absorbing and retaining menstrual fluid.
– Top Sheet: Usually composed of non-woven fabric or perforated film, the top sheet allows for quick absorption while keeping the surface dry.
– Back Sheet: Made from polyethylene or polypropylene, the back sheet prevents leakage and provides a barrier against moisture.
– Adhesive: Used to secure the pad to the underwear, adhesives are generally made from pressure-sensitive materials.
– Release Paper: This is a protective layer that covers the adhesive before use and is typically made from silicone-coated paper.

## Properties of Raw Materials

Each raw material in sanitary pads has specific properties that contribute to the overall functionality and comfort of the product:

– Absorbent Core: High absorbency, quick absorption rate, and retention capacity are essential properties. SAPs can absorb many times their weight in liquid, making them highly effective.
– Top Sheet: Softness, breathability, and moisture-wicking properties are crucial for user comfort. Non-woven fabrics are often chosen for their gentle feel and ability to keep the skin dry.
– Back Sheet: Impermeability to liquids, flexibility, and durability are key properties. Polyethylene and polypropylene are preferred for their strength and resistance to tearing.
– Adhesive: Strong adhesion, ease of removal, and hypoallergenic properties are important to ensure the pad stays in place without causing skin irritation.
– Release Paper: Easy peel-off and non-stick properties are necessary for user convenience. Silicone coating ensures smooth removal without leaving residue.

## Environmental Considerations

With growing environmental concerns, manufacturers are increasingly exploring eco-friendly alternatives for sanitary pad raw materials. Biodegradable options such as bamboo fiber, organic cotton, and plant-based SAPs are gaining popularity. These materials not only reduce environmental impact but also offer similar or enhanced performance compared to traditional materials.

## Conclusion

The raw materials used in sanitary pads play a vital role in determining their effectiveness, comfort, and environmental impact. By understanding the composition and properties of these materials, manufacturers can continue to innovate and improve the quality of sanitary pads, ensuring they meet the needs of users while minimizing their ecological footprint.