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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 is crucial for both manufacturers and consumers. The composition of sanitary pads directly impacts their comfort, absorbency, and safety. This article explores the various materials used in sanitary pad production and their properties.
Core Absorbent Materials
The absorbent core is the most critical component of a sanitary pad. It typically consists of:
- Fluff Pulp: A wood-based cellulose material that provides excellent liquid absorption and retention properties.
- Superabsorbent Polymers (SAP): These synthetic materials can absorb many times their weight in liquid, transforming it into a gel to prevent leakage.
- Cotton: Often used in premium products for its softness and breathability.
Top Sheet Materials
The top sheet is the layer that comes in direct contact with the skin. Common materials include:
- Nonwoven Polypropylene: A synthetic material that provides a dry surface feel and quick liquid penetration.
- Perforated Film: Used in some products to create a dry-feel surface.
- Organic Cotton: Used in natural and hypoallergenic products for sensitive skin.
Back Sheet Materials
The back sheet prevents leakage and keeps moisture from reaching clothing. Materials used include:
Keyword: sanitary pad raw material
- Polyethylene Film: A waterproof plastic layer that provides excellent leakage protection.
- Breathable Microporous Film: Allows vapor transmission while preventing liquid leakage.
- Biodegradable Materials: Some eco-friendly products use plant-based films.
Adhesive Components
Sanitary pads use several types of adhesives:
- Pressure-sensitive Adhesive: Used to attach the pad to underwear.
- Hot Melt Adhesive: Bonds different layers of the pad together during manufacturing.
- Release Paper: Protects the adhesive before use.
Additional Components
Modern sanitary pads may also include:
- Wings: Extra flaps that wrap around underwear for better security.
- Odor Control Agents: Such as activated charcoal or baking soda.
- Antibacterial Treatments: To maintain hygiene.
- Fragrances: Though these can cause irritation for some users.
Material Properties and Performance
The choice of materials affects several key performance factors:
| Property | Affected By |
|---|---|
| Absorbency | SAP content, fluff pulp quality |
| Comfort | Top sheet material, thickness |
| Breathability | Back sheet material, overall design</
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