# 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 fabric (polypropylene or polyethylene)
– Perforated plastic film
– Silk or cotton for premium products
Key properties: Softness, breathability, quick-drying capability
### 2. Absorbent Core
This is the most crucial component for fluid absorption. Common materials include:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Combination of both
Absorption capacity: Ranges from 50ml to 300ml depending on product type
### 3. Back Sheet
The waterproof layer prevents leakage. Materials include:
– Polyethylene film
– Breathable microporous film
– Biodegradable materials in eco-friendly options
Properties: Liquid-proof, flexible, and comfortable
### 4. Adhesive Components
– Pressure-sensitive adhesive for pad attachment to underwear
– Hot melt adhesive for layer bonding
## Specialized Materials in Premium Pads
### 1. Odor Control Agents
– Activated charcoal
– Baking soda
– Natural plant extracts
### 2. Antibacterial Treatments
– Silver ions
– Tea tree oil
– Chitosan
### 3. Comfort Enhancers
– Aloe vera coating
– Vitamin E infusion
– Cooling gel components
## Material Properties and Performance Factors
### Absorption Characteristics
– Absorption rate: How quickly fluid is drawn in
– Retention capacity: Ability to hold fluid under pressure
– Rewet value: Measurement of surface dryness
### Breathability Factors
– Air permeability (measured in cm³/cm²/sec)
– Moisture vapor transmission rate
### Skin Compatibility
– pH balance (should be skin-neutral)
– Hypoallergenic properties
– Dermatologically tested materials
## Environmental Considerations
Recent developments focus on sustainable materials:
– Biodegradable top sheets from bamboo or corn starch
– Organic cotton components
– Compostable back sheets
– Reduced SAP content with maintained performance
Keyword: sanitary pad raw material
## Quality Standards and Testing
Manufacturers must ensure materials meet:
– FDA regulations for direct skin contact
– ISO 9001 quality management standards
– Specific absorption and safety tests (e.g., EDANA/INDA standards)
## Future Material Innovations
Emerging trends include:
– Smart materials that change color for pH monitoring
– Nanofiber technology for ultra-thin high-absorption pads
– Fully biodegradable composite materials
– Plant-based superabsorbent alternatives
Understanding these material compositions and properties helps both manufacturers in product development and consumers in making informed purchasing decisions for their specific needs.