# Sanitary Pad Raw Material Composition and Properties
## Introduction to Sanitary Pad Components
Sanitary pads are essential feminine hygiene products designed to absorb menstrual flow. The effectiveness and comfort of these products depend largely on the quality and composition of their raw materials. Modern sanitary pads consist of multiple layers, each serving a specific purpose in absorption, comfort, and protection.
## Core Materials in Sanitary Pads
### Top Sheet (Cover Stock)
The top layer that comes in direct contact with the skin is typically made from:
– Non-woven polypropylene fabric
– Perforated plastic film
– Cotton or bamboo fiber blends
Properties: Soft, breathable, and quick-drying to prevent skin irritation and maintain comfort.
### Absorbent Core
The central absorbent layer usually contains:
– Fluff pulp (wood cellulose)
– Superabsorbent polymers (SAP)
– Sometimes blended with cotton or rayon
Keyword: sanitary pad raw material
Properties: High liquid absorption capacity, rapid distribution of fluid, and retention under pressure.
### Back Sheet
The waterproof bottom layer is commonly composed of:
– Polyethylene film
– Breathable microporous films
– Biodegradable materials in eco-friendly options
Properties: Moisture-proof, flexible, and durable to prevent leakage while allowing some breathability.
## Additional Components
### Adhesives
Sanitary pads incorporate several types of adhesives:
– Body-attachment adhesive strips
– Packaging sealants
– Layer bonding adhesives
Properties: Skin-friendly, strong enough for secure attachment but easy to remove without residue.
### Release Paper
Protective covering for adhesives made from:
– Silicon-coated paper
– Plastic films
Properties: Easy to peel off while protecting the adhesive until use.
## Material Properties and Performance
The combination of these materials creates a product with:
– High absorbency (up to 10 times its weight in liquid)
– Odor control through material selection and additives
– Comfort through soft, flexible construction
– Leak prevention via proper layer integration
– Breathability to reduce skin irritation
## Emerging Material Trends
Recent developments in sanitary pad materials include:
– Biodegradable and plant-based alternatives
– Antibacterial treatments using natural extracts
– Organic cotton and bamboo fiber options
– Ultra-thin designs with high-absorption SAP
Understanding the composition and properties of sanitary pad raw materials helps consumers make informed choices and manufacturers develop better products that combine comfort, protection, and environmental responsibility.
