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Sanitary Pad Raw Material Composition and Properties

Sanitary pads are essential hygiene products used by millions of women worldwide. Understanding the raw materials used in their production helps consumers make informed choices. The composition and properties of these materials directly impact comfort, absorbency, and safety.

Core Absorbent Materials

The primary absorbent layer typically consists of:

• Wood pulp (fluff pulp): Provides bulk and liquid absorption capacity
• Superabsorbent polymers (SAP): Polyacrylate compounds that can absorb many times their weight in liquid
• Cotton fibers: Used in premium products for better skin compatibility

Top Sheet Materials

The layer in direct contact with skin is usually made from:

• Nonwoven polypropylene: Most common, provides dry surface feel

Keyword: sanitary pad raw material

• Perforated plastic film: Used in some basic products
• Organic cotton: Used in premium and hypoallergenic products

Back Sheet Materials

The waterproof backing typically consists of:

• Polyethylene film: Most common, provides liquid barrier
• Breathable microporous film: Allows vapor transmission while blocking liquids
• Biodegradable materials: Emerging options like PLA (polylactic acid)

Adhesive Components

Sanitary pads contain several adhesive types:

• Hot melt adhesive: Bonds layers together
• Pressure-sensitive adhesive: For attachment to underwear
• Release paper: Protects adhesive before use

Key Material Properties

Important characteristics of sanitary pad materials include:

• Absorbency rate: How quickly fluid is drawn away from the surface
• Retention capacity: Amount of fluid held without leakage
• Breathability: Ability to allow air circulation
• Softness: Comfort against sensitive skin
• Hypoallergenic properties: Reduced risk of irritation

Emerging Material Trends

Recent developments include:

• Bamboo fiber for antimicrobial properties
• Biodegradable superabsorbents from natural sources
• Silver nanoparticles for odor control
• Plant-based plastic alternatives

Manufacturers continue to innovate with material combinations to improve performance while addressing environmental concerns. Understanding these components helps consumers select products that meet their specific needs for comfort, protection, and sustainability.