# Sanitary Pad Raw Material Composition and Properties
## Introduction to Sanitary Pad Materials
Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow. The quality and performance of these products largely depend on their raw material composition. Understanding the materials used in sanitary pad production helps consumers make informed choices and manufacturers improve product quality.
## Core Components of Sanitary Pads
### 1. Top Sheet (Cover Stock)
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 bamboo fiber blends (for organic options)
Key properties: Softness, breathability, quick-dry capability, and hypoallergenic qualities.
### 2. Absorbent Core
This is the central layer responsible for fluid absorption. Common materials include:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Combination of both
The absorbent core must balance absorption capacity with thinness for comfort.
### 3. Back Sheet
The bottom layer prevents leakage and protects clothing. Materials include:
– Polyethylene film
– Breathable microporous films
– Biodegradable materials in eco-friendly options
Properties needed: Liquid-proof, flexible, and comfortable against clothing.
## Additional Components
### 4. Adhesive Components
– Pressure-sensitive adhesive for pad attachment to underwear
– Hot melt adhesive for layer bonding
### 5. Release Paper
Protects the adhesive before use, typically made from silicon-coated paper or plastic film.
## Material Properties and Performance
### Absorption Capacity
The combination of fluff pulp and SAP determines how much fluid the pad can hold. SAP can absorb many times its weight in liquid.
### Comfort Factors
– Breathability prevents moisture buildup
– Flexibility allows movement without discomfort
– Softness reduces skin irritation
### Safety Considerations
Materials must be:
– Hypoallergenic
– Free from harmful chemicals
– Dermatologically tested
## Emerging Material Trends
Keyword: sanitary pad raw material
Recent developments include:
– Organic cotton and bamboo fibers
– Biodegradable back sheets
– Chlorine-free fluff pulp
– Plant-based SAP alternatives
These innovations address both performance and environmental concerns in sanitary pad production.
## Conclusion
The composition of sanitary pad raw materials directly affects product performance, comfort, and safety. As technology advances, we’re seeing more sustainable and skin-friendly options enter the market. Understanding these materials helps consumers choose products that meet their specific needs while supporting ongoing improvements in feminine hygiene technology.
