# 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 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.
## Core Components of Sanitary Pads
### 1. Top Sheet (Cover Stock)
The top layer that comes in direct contact with the skin is typically made from:
– Non-woven polypropylene (most common)
– Perforated plastic film
– Cotton or bamboo fiber blends (for organic options)
Properties: Soft, breathable, quick-drying, and hypoallergenic to prevent irritation.
### 2. Absorbent Core
The middle layer responsible for fluid absorption contains:
– Fluff pulp (bleached wood pulp)
– Superabsorbent polymers (SAP)
– Sometimes cotton or rayon fibers
Keyword: sanitary pad raw material
Properties: High absorbency, good retention capacity, and effective liquid distribution.
### 3. Back Sheet
The bottom waterproof layer usually consists of:
– Polyethylene film
– Microporous breathable film (premium products)
– Biodegradable materials in eco-friendly options
Properties: Moisture-proof, flexible, and comfortable against clothing.
### 4. Adhesive Components
– Pressure-sensitive adhesive for pad attachment to underwear
– Hot melt adhesive for layer bonding
Properties: Strong enough to stay in place but gentle on fabrics.
## Additional Features and Materials
### 1. Wing Materials
– Non-woven fabric with elastic components
– Sometimes coated with adhesive for better fixation
### 2. Fragrance Components (in scented varieties)
– Microencapsulated fragrance beads
– Natural essential oils in organic products
### 3. Indicator Strips
– Color-changing materials that indicate saturation
## Material Properties and Performance Factors
Key characteristics that determine pad quality:
– Absorbency rate: How quickly fluid is drawn away from the surface
– Retention capacity: Ability to hold fluid without leakage
– Dryness: Surface remains dry after absorption
– Breathability: Allows air circulation to reduce moisture buildup
– Softness: Comfort against sensitive skin
– Hypoallergenic: Minimizes risk of irritation
## Emerging Trends in Sanitary Pad Materials
Recent developments include:
– Biodegradable and compostable materials
– Organic cotton and bamboo fibers
– Antibacterial treatments using silver nanoparticles
– Plant-based superabsorbent polymers
– Chlorine-free bleaching processes
## Conclusion
Understanding sanitary pad raw material composition helps consumers make informed choices based on comfort, performance, and environmental impact. Manufacturers continue to innovate with new materials that enhance functionality while addressing ecological concerns. The ideal sanitary pad combines effective absorption with skin-friendly properties through careful material selection and engineering.
