# Sanitary Pad Raw Material Composition and Properties
## Introduction to Sanitary Pad Materials
Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow and maintain comfort during menstruation. The effectiveness and comfort of these products largely depend on the quality and composition of their raw materials. Modern sanitary pads consist of multiple layers, each serving a specific purpose in absorption, protection, and comfort.
## Core Components of Sanitary Pad Materials
### 1. Top Sheet (Cover Layer)
The top sheet is the layer that comes in direct contact with the skin. It’s typically made from:
– Nonwoven polypropylene or polyethylene
– Perforated plastic films
– Cotton-like materials for premium products
Key properties:
• Soft and non-irritating to skin
• Quick-drying surface
• Allows liquid to pass through easily
### 2. Absorbent Core
This is the most crucial layer responsible for fluid absorption. Common materials include:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Combination of both
Absorption capacity:
Material | Absorption Capacity (g/g)
——— | ————————-
Fluff pulp | 10-15
SAP | 30-60
Keyword: sanitary pad raw material
Combination | 20-40
### 3. Back Sheet
The back sheet prevents leakage and provides structural integrity. Materials used:
– Polyethylene film
– Breathable microporous films
– Cloth-like materials
Important characteristics:
• Liquid-proof
• Flexible
• Some allow vapor transmission
### 4. Adhesive Components
These include:
– Pressure-sensitive adhesives for pad attachment
– Hot melt adhesives for layer bonding
– Release paper for packaging
## Specialized Materials in Premium Pads
### 1. Odor Control Additives
– Activated charcoal
– Baking soda
– Antimicrobial agents
### 2. Wetness Indicators
– Color-changing compounds
– pH-sensitive dyes
### 3. Organic Options
– Certified organic cotton
– Bamboo fiber
– Biodegradable materials
## Material Safety and Regulations
All sanitary pad materials must comply with:
– FDA regulations (for US market)
– EU cosmetic regulations
– National standards in respective countries
Key safety considerations:
• Hypoallergenic properties
• Free from harmful chemicals
• Dermatologically tested
## Environmental Considerations
Recent developments focus on:
– Biodegradable materials
– Reduced plastic content
– Compostable options
– Plant-based SAP alternatives
## Future Trends in Sanitary Pad Materials
Emerging technologies include:
– Nanofiber technology for better absorption
– Smart materials with sensing capabilities
– Sustainable and renewable material sources
– Improved breathability designs
The continuous innovation in sanitary pad raw materials aims to enhance comfort, absorption, and environmental sustainability while maintaining strict safety standards for women’s health.
