# Sanitary Napkin Raw Materials: Key Components and Their Functions
Sanitary napkins are essential feminine hygiene products that provide comfort and protection during menstruation. Understanding the raw materials used in their production helps consumers make informed choices about the products they use. Let’s explore the key components of sanitary napkins and their functions.
## 1. Top Sheet (Cover Layer)
The top sheet is the layer that comes in direct contact with the skin. It’s typically made from:
– Non-woven fabric (polypropylene or polyethylene)
– Perforated plastic film
– Cotton or cotton blends
This layer needs to be soft, breathable, and quick-drying to maintain comfort while allowing menstrual fluid to pass through to the absorbent core.
## 2. Absorbent Core
The core is the most important functional component, responsible for absorbing and retaining menstrual flow. It usually consists of:
– Fluff pulp (wood cellulose)
– Superabsorbent polymer (SAP)
– Sometimes with additional layers of tissue paper
The SAP can absorb many times its weight in liquid, while the fluff pulp provides structure and additional absorption capacity.
## 3. Back Sheet (Barrier Layer)
The back sheet prevents leakage and keeps moisture from reaching clothing. Common materials include:
– Polyethylene film
– Breathable microporous film
– Biodegradable materials in eco-friendly options
This layer must be waterproof yet comfortable against clothing.
## 4. Adhesive Components
Several adhesive elements are used:
– Pressure-sensitive adhesive strips (for attachment to underwear)
– Hot melt adhesives (for bonding layers together)
– Release paper (protects adhesive before use)
## 5. Additional Features
Modern sanitary napkins may include:
– Side barriers (leak guards)
– Fragrance components (though these may cause irritation for some)
– Wetness indicators
– Antibacterial treatments
## Environmental Considerations
Many manufacturers are now exploring more sustainable options:
Keyword: sanitary napkin raw materials
– Organic cotton top sheets
– Biodegradable back sheets
– Plant-based SAP alternatives
– Chlorine-free pulp
Understanding these components helps women choose products that best suit their needs in terms of comfort, protection, and environmental impact. The quality and combination of these materials directly affect the performance and safety of the final product.
