Sanitary Pads Raw Material Composition and Properties Analysis

# Sanitary Pads Raw Material Composition and Properties Analysis

Sanitary pads are essential hygiene products used by millions of women worldwide. Understanding the raw materials used in their production is crucial for ensuring quality, comfort, and safety. This article delves into the composition and properties of the primary raw materials used in sanitary pads.

## 1. Absorbent Core

The absorbent core is the heart of a sanitary pad, responsible for absorbing menstrual flow. 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, enhancing the pad’s efficiency.

## 2. Top Sheet

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

– **Nonwoven Fabric**: Made from synthetic fibers like polypropylene, it is soft, breathable, and allows for quick liquid penetration.
– **Perforated Film**: A thin, flexible material that provides a smooth surface and prevents leakage.

## 3. Back Sheet

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

– **Polyethylene Film**: A waterproof, flexible material that ensures no leakage.
– **Breathable Microporous Film**: Allows air to pass through while keeping liquids contained, enhancing comfort.

## 4. Adhesive

Adhesives are used to secure the sanitary pad in place. They must be strong enough to hold the pad securely but gentle on the skin. Common types include:

– **Hot Melt Adhesive**: A synthetic adhesive that provides strong bonding and is easy to apply.
– **Pressure-Sensitive Adhesive**: Sticks to the underwear when pressure is applied, ensuring the pad stays in place.

## 5. Release Paper

Release paper is used to protect the adhesive before use. It is typically made from:

– **Silicone-Coated Paper**: Easy to peel off and does not leave residue on the adhesive.

## Properties Analysis

Each material used in sanitary pads has specific properties that contribute to the overall performance of the product:

– **Absorbency**: The ability to absorb and retain liquid, primarily provided by the absorbent core.
– **Softness**: Ensures comfort and prevents irritation, mainly from the top sheet.
– **Leakage Protection**: Provided by the back sheet and adhesive, ensuring the pad stays in place and prevents leaks.
– **Breathability**: Allows air to circulate, reducing the risk of skin irritation and discomfort.

Understanding the composition and properties of the raw materials used in sanitary pads helps in selecting the right product for individual needs. It also highlights the importance of quality control in manufacturing to ensure safety and comfort for users.