# 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 comfort of these products largely depend on their raw material composition. Modern sanitary pads consist of multiple layers, each serving a specific purpose to ensure absorption, comfort, and protection.
## 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 polypropylene or polyethylene
– Perforated plastic film
– Soft cotton-like materials
Key properties:
– Soft and gentle on skin
– Quick-drying surface
– Breathable to prevent irritation
### 2. Absorbent Core
This is the most crucial layer responsible for fluid absorption. Common materials include:
– Wood pulp (fluff pulp)
– Superabsorbent polymers (SAP)
– Cotton fibers
– Rayon
Absorption characteristics:
– High liquid retention capacity
– Rapid absorption rate
– Even distribution of fluid
### 3. Back Sheet
The back sheet prevents leakage and provides structural support. Materials used:
– Polyethylene film
– Breathable microporous film
– Non-woven fabric combinations
Important features:
– Liquid-proof
– Flexible yet durable
– Some offer breathability to reduce moisture buildup
### 4. Adhesive Components
These include:
– Pressure-sensitive adhesives for pad attachment to underwear
– Hot melt adhesives for layer bonding
– Release paper for protection before use
Adhesive requirements:
– Strong enough to stay in place
– Gentle on fabrics
– Leaves no residue
## Specialized Materials in Premium Pads
### 1. Organic Cotton
Keyword: sanitary pad raw material
Used in natural/organic pads:
– Hypoallergenic
– Free from synthetic materials
– Biodegradable option
### 2. Bamboo Fiber
Emerging as a sustainable alternative:
– Naturally antibacterial
– Highly absorbent
– Eco-friendly production
### 3. Silver Ion Technology
For odor control:
– Antimicrobial properties
– Reduces bacterial growth
– Maintains freshness
## Material Safety Considerations
Manufacturers must ensure:
– Non-toxic materials
– Hypoallergenic formulations
– Compliance with international safety standards
– Absence of harmful chemicals like dioxins or chlorine
## Environmental Impact and Innovations
Recent developments focus on:
– Biodegradable materials
– Reduced plastic content
– Compostable options
– Plant-based superabsorbents
The sanitary pad industry continues to evolve with new materials that balance performance, comfort, and environmental responsibility. Understanding these raw materials helps consumers make informed choices about the products they use.