# 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 the quality and composition of their raw materials. Understanding the materials used in sanitary pad production helps consumers make informed choices and manufacturers improve product quality.
## Core Materials in 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
– Perforated plastic film
– Cotton or cotton blends
Keyword: sanitary pad raw material
Key properties:
– Soft and comfortable
– Quick-drying surface
– Hypoallergenic
– Breathable
### 2. Absorbent Core
This is the central layer responsible for fluid absorption:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Sometimes includes cotton or rayon
Absorption characteristics:
– High liquid retention capacity
– Rapid absorption rate
– Minimal rewetting
### 3. Back Sheet
The waterproof layer that prevents leaks:
– Polyethylene film
– Breathable microporous films
– Sometimes fabric-like materials
Important features:
– Liquid-proof
– Flexible
– Durable
– May be breathable for comfort
### 4. Adhesive Components
– Pressure-sensitive adhesive for pad attachment
– Hot melt adhesives for layer bonding
## Additional Components
### Wings and Side Barriers
– Often made of non-woven materials
– May contain elastic components
– Designed to prevent side leakage
### Packaging Materials
– Individual wrappers (plastic or paper)
– Outer packaging (cardboard or plastic)
## Material Properties and Considerations
### Safety Standards
All materials must meet:
– FDA regulations (or equivalent)
– Dermatological safety tests
– Non-toxic requirements
### Environmental Considerations
Recent developments include:
– Biodegradable materials
– Organic cotton options
– Reduced plastic content
– Compostable components
### Performance Factors
Key material performance indicators:
– Absorption capacity (grams of fluid)
– Retention under pressure
– Dryness index
– Odor control properties
## Future Material Trends
The sanitary pad industry is evolving with:
– Plant-based superabsorbents
– Antibacterial natural fibers
– Smart materials with pH indicators
– Sustainable and eco-friendly alternatives
Understanding these material compositions helps consumers select products that match their needs for comfort, protection, and environmental impact. Manufacturers continue to innovate with new materials that improve performance while addressing sustainability concerns.
