Wholesale Hydrophilic Adl Nonwoven for Baby Diaper

Product Description

Width	70/80/90mm
Weight	25/30/35gsm
Color	White/Blue/Green/Can be designed by customer
Packing	Export packing by rolls
MOQ	2000kgs
Delivery time	7 days

 
 

ADL Nonwoven (Acquisition-Distribution Layer) is a critical, high-performance component in modern disposable diapers. It is a specialized type of nonwoven fabric engineered to function as a "liquid management system," positioned between the top sheet and the absorbent core. Its primary role is to rapidly acquire, temporarily hold, and distribute liquid over a large surface area of the core, thereby maximizing the diaper's overall absorption efficiency and ensuring superior skin dryness.

 

1. Core Functions and Benefits

 

 

Function	Mechanism & Benefit
Rapid Acquisition	Quickly pulls liquid away from the skin surface through the top sheet, reducing rewet and the feeling of wetness against the baby's skin.
Uniform Distribution	Spreads the liquid laterally (side-to-side and front-to-back) throughout the entire absorbent core, preventing localized saturation and core gel-blocking.
Temporary Reservoir	Holds a small amount of liquid before releasing it to the core, preventing gush-induced leaks during a large-volume urination.
Enhanced Core Efficiency	By distributing liquid evenly, it ensures the entire Super Absorbent Polymer (SAP) volume is utilized, allowing for a thinner, more efficient core design.

2. Key Material Characteristics and Structure

ADL nonwovens are distinctly different from standard top sheet or back sheet nonwovens due to their unique structure:

• High Porosity & Open Structure: Typically made using a through-air bonding (TAB) process. This creates a lofty, bulky, and highly porous 3D web with large void spaces, which is essential for fast liquid intake and air permeability.

• Material Composition: Usually made from 100% polyester (PET) or PE/PET bicomponent fibers. PET is hydrophobic, meaning it does not absorb liquid but readily transports it via capillary action. The fibers are often crimped to enhance loft and resilience.

• Bicomponent Fibers: PE/PET fibers, where the PET provides strength and the low-melting-point PE sheath allows thermal bonding during the TAB process, creating a soft and durable fabric without the need for chemical binders.

3. Comparison: ADL vs. Standard Nonwovens

 

 

Feature	ADL Nonwoven	Standard Top Sheet Nonwoven
Primary Function	Liquid management (acquisition & distribution)	Comfort & initial contact; fast liquid passage
Structure	Bulky, lofty, highly porous 3D network	Thin, flat, uniform 2D sheet
Material	Primarily hydrophobic PET	Often hydrophilic PP or PE/PP
Process	Through-Air Bonding (TAB)	Spunbond, Spunbond-Meltblown-Spunbond (SMS)

4. Importance in Modern Diaper Design

The integration of an ADL is a key innovation that enables the performance of ultra-thin diapers. Without an ADL, a surge of liquid can overwhelm the core, leading to:

• Pooling on the surface.

• High Rewet (liquid being pushed back onto the skin).

• Gel Blocking (SAP particles swelling and blocking further liquid penetration into the core).

The ADL effectively solves these problems, making it an indispensable component for high-quality, high-absorbency diapers that promote skin health by keeping the surface drier.

5. Industry Trends and Innovations

• Zoned ADL Designs: Applying different basis weights or densities of ADL in specific areas (e.g., heavier in the target zone) for optimized performance.

• Sustainable Materials: Development of ADLs using PLA (Polylactic Acid) fibers or fibers from recycled PET.

• Integrated Structures: Combining the ADL with the top sheet or core in a single, streamlined manufacturing process to reduce cost and thickness.

 

In summary, the ADL nonwoven is the unsung hero within a high-performance diaper. It is a sophisticated engineering material that transforms a simple absorbent pad into an efficient liquid management system, directly contributing to the core benefits of leakage protection, skin dryness, and ultimate comfort for the user.

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