ultra thin absorbent core

Diapers mainly have the following SAP sheet raw materials types: 1.Fleece pulp core: A traditional core made by mixing fluff pulp and polymer absorbent resin. It has good drainage properties, can quickly absorb urine and lock it in through polymer materials, keeping the baby's skin dry. However, the fluff pulp core is prone to clumping and fracturing due to its loose structure and lack of adhesive fixation. 2.Composite core: composed of dust-free paper, non-woven fabric, and polymer absorbent resin, bonded between each layer of material with hot melt adhesive. This type of absorbent core baby diaper is not prone to clumping or breaking, and can maintain its original shape after absorbing water, making it lightweight and comfortable. Although the process is complex and costly, it has stronger absorption and locking power, providing better comfort and absorption efficiency. 3.Full core body: mainly composed of high polymer water absorbing resin, with fast absorption speed, less reverse osmosis, good breathability, but relatively hard. 4.Ultra thin absorbent core: Similar to a full core, but thinner and more lightweight.

The ultra-thin absorbent core is the key structure of disposable diapers, enabling ultra-light wearing experience and efficient fluid absorption. Primarily composed of air-laid paper (absorbent bulk paper) and Super Absorbent Polymer (SAP), it has become the prevailing technical solution in the industry. Air-laid paper features fluffy structure and excellent toughness with outstanding liquid spreading performance. It evenly distributes bodily fluid, fully encapsulates and immobilizes SAP particles to prevent powder migration and dust leakage. It also maintains the structural integrity of the core and effectively eliminates clumping and layer separation after fluid absorption. Its inherent fibrous pores facilitate moisture dissipation and further improve air permeability. Serving as the SAP core absorbent and retention medium, SAP delivers ultra-high absorption capacity and superior fluid locking performance. It quickly entraps large volumes of urine and effectively inhibits rewetting. Adopted with layered lamination and precision powder deposition technologies, the composite structure achieves significant thickness reduction without compromising absorption efficiency. Furthermore, functional nonwoven fabrics are applied as auxiliary layers on both sides of the core. The top nonwoven fabric accelerates fluid distribution and air exchange, while the bottom breathable PE film provides reliable leak-proof protection. The synergistic combination of diverse materials produces high-performance ultra-thin cores that excel in lightness, softness, absorption and air permeability. If you want to know more, please click www.glinknonwoven.com