# Sanitary Pad Raw Material Composition and Properties
## Introduction to Sanitary Pad Components
Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow. The effectiveness and comfort of these products largely depend on their raw material composition. Understanding the materials used in sanitary pad production helps consumers make informed choices about the products they use.
## Core Materials in Sanitary Pads
### 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 polypropylene (most common)
– Perforated plastic film
– Cotton or other natural fibers (in premium products)
Key properties: Softness, breathability, and quick-drying capability
### 2. Absorbent Core
This is the central layer responsible for fluid absorption. It usually contains:
– Fluff pulp (wood cellulose)
– Superabsorbent polymer (SAP)
– Sometimes blended with cotton or rayon
Absorption capacity: Can hold 10-20 times its weight in fluid
### 3. Back Sheet
The waterproof layer that prevents leakage:
– Polyethylene film (most common)
– Microporous “breathable” films in premium products
– Biodegradable materials in eco-friendly options
Properties: Liquid-proof yet allows vapor transmission
### 4. Adhesive Components
– Pressure-sensitive adhesive for pad attachment to underwear
– Hot melt adhesive for layer bonding
– Silicone release paper on the backing
## Additional Components
### Wings and Side Barriers
Keyword: sanitary pad raw material
– Often made from non-woven materials
– May contain elastic components for better fit
– Help prevent side leakage
### Fragrance and Additives
– Some pads include odor-control agents
– Aloe vera or other soothing additives in premium products
– Antimicrobial treatments in some variants
## Material Properties and Performance
The combination of these materials creates pads with specific characteristics:
1. Absorption rate: How quickly fluid is drawn away from the surface
2. Retention capacity: How much fluid the pad can hold without leakage
3. Dryness: Ability to keep surface feeling dry
4. Comfort: Softness and flexibility
5. Breathability: Air circulation to reduce moisture buildup
## Environmental Considerations
Recent developments focus on more sustainable materials:
– Biodegradable top sheets from bamboo or cotton
– Plant-based SAP alternatives
– Compostable back sheets
– Reduced plastic content
Understanding sanitary pad raw materials helps consumers choose products that match their needs for comfort, protection, and environmental impact. Manufacturers continue to innovate with new materials to improve performance while addressing sustainability concerns.