# 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 comfort of these products largely depend on their raw material composition. Modern sanitary pads consist of multiple layers, each serving a specific purpose to ensure protection, comfort, and hygiene.
## 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)
Properties: Soft, breathable, and quick-drying to prevent irritation and maintain comfort.
### 2. Absorbent Core
This is the central layer responsible for fluid absorption. It usually contains:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Sometimes cotton or bamboo fibers
Properties: High absorbency, good retention capacity, and quick absorption rate.
### 3. Back Sheet
The bottom layer that prevents leakage. Materials include:
– Polyethylene film
– Breathable microporous films
– Biodegradable materials in eco-friendly options
Properties: Liquid-proof, flexible, and often breathable to reduce sweating.
### 4. Adhesive Layer
The glue that keeps the pad in place:
– Pressure-sensitive adhesives
– Hypoallergenic formulations
Properties: Strong enough to stay in place but gentle on fabrics.
## Additional Components
### 1. Wings
Extra flaps that wrap around underwear:
– Typically made from the same material as the back sheet
– Contain additional adhesive strips
### 2. Release Paper
Protective layer covering the adhesive:
– Usually silicone-coated paper
– Easy to remove before application
## Material Properties and Considerations
### 1. Absorbency
The combination of fluff pulp and SAP determines:
– Absorption capacity (measured in grams)
– Absorption speed
– Fluid distribution
### 2. Breathability
Important factors include:
– Microporous back sheets
– Air-permeable top sheets
– Moisture vapor transmission rate
Keyword: sanitary pad raw material
### 3. Softness and Comfort
Affected by:
– Fiber fineness
– Surface texture
– Material flexibility
### 4. Hypoallergenic Properties
Key considerations for sensitive skin:
– Fragrance-free options
– Chlorine-free bleaching processes
– Natural material alternatives
## Environmental Considerations
Recent developments include:
– Biodegradable materials
– Plant-based SAP alternatives
– Compostable packaging
– Reduced plastic content
## Conclusion
Understanding sanitary pad raw materials helps consumers make informed choices based on comfort, performance, and environmental impact. Manufacturers continue to innovate with new materials that improve functionality while addressing sustainability concerns. The ideal sanitary pad combines effective absorption with skin-friendly materials for maximum comfort during use.
