# 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. Modern sanitary pads consist of multiple layers, each serving a specific purpose to ensure comfort, absorption, and protection.
## 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 or polyethylene
– Perforated plastic films
– Soft, breathable materials with good moisture-wicking properties
Key properties: Softness, quick-drying, hypoallergenic, and comfortable against sensitive skin.
### 2. Absorbent Core
This is the most crucial layer responsible for fluid absorption. Common materials include:
– Wood pulp (fluff pulp)
– Superabsorbent polymers (SAP)
– Cotton or rayon fibers
The absorbent core can hold up to 10-15 times its weight in liquid, with SAP being particularly effective at locking in moisture.
### 3. Back Sheet
The back sheet prevents leakage and keeps moisture from reaching clothing. Materials include:
– Polyethylene film
Keyword: sanitary pad raw material
– Breathable microporous films
– Non-woven fabric composites
Properties: Waterproof, breathable, and flexible to allow comfortable movement.
### 4. Adhesive Components
– Pressure-sensitive adhesives for pad attachment to underwear
– Hot melt adhesives for bonding layers together
– Silicone-based release papers
## Additional Features and Materials
### Wings and Side Barriers
Many modern pads include:
– Elastic side barriers to prevent leakage
– Wing flaps for better securement
– Made from non-woven fabrics with elastic components
### Fragrance and Additives
Some pads may contain:
– Natural or synthetic fragrances
– Aloe vera or vitamin E for skin care
– Antimicrobial agents
## Environmental Considerations
Recent developments focus on:
– Biodegradable materials like bamboo fiber
– Organic cotton options
– Reduced plastic content
– Compostable back sheets
## Quality and Safety Standards
All sanitary pad materials must meet:
– FDA or equivalent regulatory requirements
– Dermatological testing for skin safety
– Absorbency performance standards
– Hypoallergenic certifications when applicable
## Conclusion
The composition of sanitary pad raw materials has evolved significantly to provide better comfort, absorption, and skin protection. Manufacturers continue to innovate with new materials and designs to meet consumer needs for both performance and environmental sustainability. Understanding these components helps consumers make informed choices about the products they use.
