Super absorbent core

What Is a Super Absorbent Core?

A super absorbent core is the key functional component of a diaper, responsible for absorbing, distributing, and retaining liquid.
It is typically composed of super absorbent polymer (SAP) and cellulose fluff pulp, engineered into a layered or composite structure that ensures:

• Rapid liquid acquisition

• Efficient liquid distribution

• Strong liquid retention under pressure

• Reduced surface wetness (low rewet)

A well-designed diaper absorbent core directly determines diaper dryness, leakage protection, comfort, and overall performance.

Our absorbent cores are widely used in:

• Baby diapers (newborn to toddler)

• Adult diapers & incontinence products

• Sanitary napkins & hygiene pads

• Medical and hospital hygiene products

Each application can be optimized with specific absorption capacity, thickness, and core geometry.

Core Structure & Working Principle

Our diaper absorbent cores are engineered using optimized material ratios and structural design.

Basic Structure Options:

• SAP particles for liquid absorption and retention

• Fluff pulp fibers for liquid transport and distribution

• Tissue or nonwoven layers for structural stability

• Optional ADL (Acquisition Distribution Layer) integration

Working Mechanism:

1. Liquid is quickly captured by the acquisition layer

2. Fluff pulp distributes liquid evenly across the core

3. SAP absorbs and locks liquid into gel form

4. Core maintains shape and minimizes liquid backflow

Types of Diaper Absorbent Core We Supply

Raditional SAP + Fluff Pulp Absorbent Core

A classic structure widely used in baby and adult diapers.

Key Features:

• Balanced absorption speed and capacity

• Cost-effective and stable performance

• Suitable for standard diaper designs

Recommended Applications:
Baby diapers, adult diapers, sanitary napkins

Composite / Ultra-Thin Absorbent Core

Designed for modern thin-diaper concepts with improved comfort and flexibility.

Key Features:

• Higher SAP concentration

• Reduced thickness with equal or higher absorbency

• Better shape retention and lighter weight

Recommended Applications:
Premium baby diapers, ultra-thin adult incontinence products

ADL-Integrated Absorbent Core (Optional)

Enhanced liquid acquisition and distribution for high-flow scenarios.

Key Features:

• Faster liquid intake

• Reduced leakage risk

• Improved dryness under repeated wetting

Recommended Applications:
High-absorbency diapers, overnight diapers, adult incontinence care

Technical Specifications (Typical Ranges)

Values shown are typical ranges. Full technical data sheet available upon request.
[Download Full Specification PDF]

Performance Advantages.

• High Absorption Efficiency
  Optimized SAP-to-pulp ratio ensures fast intake and strong liquid retention.

• Low Rewet & Improved Dryness
  Minimized liquid return to surface improves skin comfort and reduces rash risk.

• Structural Stability
  Core maintains shape after multiple wettings, reducing sagging and leakage.

• Customizable Design
  SAP content, GSM, width, thickness, and structure can be tailored to your diaper model.

• Compatible with High-Speed Diaper Lines
  Stable core integrity supports modern high-speed converting machines.

Manufacturing Capability & Quality Control

• Over 20 years of experience in hygiene raw materials

• ISO 9001 quality management system

• SGS-tested absorbency and material performance

• Advanced core forming and cutting equipment

• Daily production capacity: [xx] tons / day

• Stable supply for large-volume international orders

Strict QC procedures cover SAP distribution, absorption performance, rewet value, thickness consistency, and bonding integrity.

Frequently Asked Questions (FAQ)

Q1: What is the difference between traditional and composite absorbent core?
Traditional cores use a balanced SAP and fluff pulp structure, offering stable and cost-effective performance. Composite cores increase SAP concentration and optimize structure to achieve thinner designs with equal or higher absorption capacity.

Q2: How do I choose SAP ratio for my diaper absorbent core?
Higher SAP ratio improves absorption capacity and reduces thickness, while higher fluff pulp content enhances liquid distribution. The optimal ratio depends on diaper size, target absorption level, and cost positioning.

Q3: What is rewet and why is it important?
Rewet measures how much liquid returns to the diaper surface after absorption. Low rewet indicates better dryness and comfort, especially critical for baby skin health.

Q4: Can you customize absorbent core for different diaper sizes?
Yes. Core width, length, GSM, thickness, and SAP distribution can all be customized to match newborn, baby, or adult diaper designs.

Q5: Do you provide free samples for testing?
Yes. Free absorbent core samples are available for performance evaluation and production testing.

Why Choose Our Absorbent Core?

• Professional hygiene materials manufacturer

• Proven SAP core technology and stable quality

• Flexible customization and OEM capability

• Competitive cost-performance ratio

• Reliable global supply chain support

Partner with us to build high-performance diaper products with confidence.

Get a Quote

Please provide the following details for a fast quotation:

• Company name

• Diaper type (baby / adult / sanitary)

• Target absorption capacity

• Core width & GSM

• Estimated order quantity

Our sales and technical team will respond within 24 hours.

[Request a Quote]