# Sanitary Napkins Raw Material: Composition and Manufacturing Process

Sanitary napkins, also known as sanitary pads or menstrual pads, are essential hygiene products used by women during menstruation. The raw materials used in their production play a crucial role in ensuring comfort, absorbency, and safety. This article explores the composition of sanitary napkins and the manufacturing process involved in their production.

## Composition of Sanitary Napkins

Sanitary napkins are composed of several layers, each serving a specific purpose. The primary materials used include:

– **Top Layer (Cover Stock):** This is the layer that comes in direct contact with the skin. It is usually made from non-woven fabric or perforated film, designed to be soft, breathable, and quick-drying.
– **Absorbent Core:** The core is the most critical part of the napkin, responsible for absorbing menstrual fluid. It is typically made from a blend of wood pulp and superabsorbent polymers (SAP).
– **Back Sheet:** The back sheet is the bottom layer of the napkin, usually made from polyethylene film. It prevents leakage and keeps the napkin in place.
– **Adhesive:** A pressure-sensitive adhesive is applied to the back sheet to keep the napkin securely attached to the underwear.
– **Release Paper:** This is a protective layer that covers the adhesive before use. It is peeled off when the napkin is ready to be used.

## Manufacturing Process

The manufacturing process of sanitary napkins involves several steps, each requiring precision and quality control. Here is an overview of the process:

1. **Material Preparation:** The raw materials, including the top layer, absorbent core, back sheet, and adhesive, are prepared and inspected for quality.
2. **Layer Assembly:** The layers are assembled in a specific order. The top layer is placed first, followed by the absorbent core, and then the back sheet.
3. **Cutting and Shaping:** The assembled layers are cut into the desired shape and size using precision cutting machines.
4. **Adhesive Application:** The adhesive is applied to the back sheet, and the release paper is attached to protect the adhesive until use.
5. **Packaging:** The finished napkins are packaged in individual wrappers and then boxed for distribution. Quality control checks are performed at each stage to ensure the final product meets safety and performance standards.

## Conclusion

Understanding the composition and manufacturing process of sanitary napkins highlights the importance of quality raw materials and precise production techniques. These factors ensure that the final product is comfortable, effective, and safe for use, providing women with the confidence and hygiene they need during menstruation.