# Sanitary Pads Raw Material Composition and Properties

Sanitary pads are essential personal hygiene products used by millions of women worldwide. Understanding the raw materials that go into their production is crucial for both manufacturers and consumers. 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 the production of 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: This is the layer that comes into direct contact with the skin. It is usually made from non-woven fabric or perforated film to ensure comfort and quick absorption.
– Back Sheet: The back sheet is made from a waterproof material, often polyethylene, to prevent leakage.
– Adhesive: Used to keep the pad in place, the adhesive is usually a pressure-sensitive adhesive applied to the back sheet.

## Properties of Raw Materials

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

– Absorbent Core: The wood pulp provides bulk and structure, while SAP enhances the absorbency and retention capacity. SAP can absorb many times its weight in liquid, making it highly effective.
– Top Sheet: The non-woven fabric or perforated film is designed to be soft, breathable, and quick-drying, ensuring user comfort and preventing irritation.
– Back Sheet: Polyethylene is chosen for its waterproof properties, ensuring that the pad does not leak. It is also flexible and durable.
– Adhesive: The adhesive must be strong enough to keep the pad in place but gentle enough to be removed without causing discomfort or leaving residue.

## Environmental Considerations

With increasing awareness of environmental issues, manufacturers are exploring eco-friendly alternatives for sanitary pad raw materials:

– Biodegradable Materials: Some companies are using biodegradable materials for the top sheet and back sheet to reduce environmental impact.
– Organic Cotton: Organic cotton is being used as an alternative to synthetic materials for the top sheet, offering a natural and hypoallergenic option.
– Plant-based SAP: Research is ongoing into plant-based superabsorbent polymers that are more sustainable than traditional petroleum-based SAP.

## Conclusion

The raw materials used in sanitary pads play a critical role in their performance and user comfort. Understanding the composition and properties of these materials helps in making informed choices, whether you are a manufacturer aiming to improve product quality or a consumer looking for the best options. As the industry evolves, the shift towards more sustainable and eco-friendly materials is likely to continue, benefiting both users and the environment.