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Sanitary Pad Raw Material Composition and Properties

Sanitary pads are essential hygiene products designed to provide comfort and protection during menstruation. Understanding the raw materials used in their production helps consumers make informed choices. Below, we explore the key components and their properties.

1. Absorbent Core

The absorbent core is the most critical part of a sanitary pad, responsible for retaining menstrual fluid. It is typically made from:

• Fluff Pulp: A biodegradable material derived from wood fibers, known for its high absorbency and softness.
• SAP (Super Absorbent Polymer): A synthetic material that can absorb many times its weight in liquid, enhancing the pad’s capacity.

2. Top Sheet

The top sheet is the layer in direct contact with the skin. It is designed to be soft and quick-drying. Common materials include:

• Nonwoven Fabric: Made from polypropylene or polyester, it provides a smooth and breathable surface.
• Perforated Film: A plastic layer with tiny holes to allow liquid to pass through while keeping the surface dry.

3. Back Sheet

The back sheet prevents leaks and keeps moisture from escaping. It is usually composed of:

• Polyethylene (PE) Film: A waterproof and flexible material that ensures no leakage.
• Breathable Microporous Film: Allows air circulation while blocking liquids, improving comfort.

4. Adhesive Layer

This layer secures the pad in place. It includes:

• Pressure-Sensitive Adhesive: Applied to the back sheet to stick to underwear without leaving residue.
• Release Paper: A protective layer removed before use.

5. Additional Features

Modern sanitary pads may include extra components for enhanced performance:

• Wings: Side flaps that fold over underwear edges for better security.
• Fragrance: Added for odor control, though it may cause irritation for some users.
• Aloe Vera or Chamomile: Soothing agents to reduce skin irritation.

Conclusion

Sanitary pads are made from a combination of natural and synthetic materials, each serving a specific purpose. By understanding these components, users can choose products that align with their comfort, health, and environmental preferences.