# 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 effectiveness 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 Layer)
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 blends for premium products
Key properties: Softness, breathability, quick-drying capability
### 2. Absorbent Core
This is the most crucial layer that determines the pad’s absorption capacity. Common materials include:
Keyword: sanitary pad raw material
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Combination of both
Modern pads use SAP percentages ranging from 10% to 60% depending on the desired absorption level.
### 3. Back Sheet
The waterproof layer that prevents leakage:
– Polyethylene film
– Microporous breathable films
– Biodegradable materials in eco-friendly options
### 4. Adhesive Components
– Pressure-sensitive adhesive for panty attachment
– Hot melt adhesives for layer bonding
## Material Properties and Performance
### Absorption Capacity
The combination of fluff pulp and SAP determines:
– Absorption speed
– Retention capacity
– Anti-leakage performance
Premium pads may absorb 10-15 times their weight in liquid.
### Breathability
Measured in g/m²/24h, higher values indicate better moisture vapor transmission:
– Standard pads: 500-1,000 g/m²/24h
– Breathable pads: 2,000-3,000 g/m²/24h
### Skin Safety
Materials must be:
– Hypoallergenic
– Free from harmful chemicals
– Dermatologically tested
## Emerging Material Trends
### Eco-friendly Alternatives
– Bamboo fiber topsheets
– PLA (polylactic acid) backsheets
– Biodegradable SAP
### Smart Materials
– Phase change materials for temperature regulation
– Odor-neutralizing compounds
– Antimicrobial treatments
## Quality Standards and Testing
Manufacturers must comply with:
– ISO 9001 for quality management
– ISO 13485 for medical devices
– Regional safety regulations
Common tests include:
– Absorption rate and capacity
– Rewet testing
– Tensile strength
– Skin irritation potential
Understanding these material aspects helps both manufacturers innovate better products and consumers choose pads that match their needs for comfort, protection, and safety.
