Core body for preventing particles from sliding and preparation method thereof

Abstract

The invention discloses a core body capable of preventing particles from sliding and a preparation method thereof. The core body comprises a core body surface layer made of a non-woven material, a super water absorbent layer made of SAP particles and a core body bottom layer made of a non-woven material; the core body is characterized in that the non-woven materials adopted by the core body surface layer and the core body bottom layer form transverse flow guide grooves used for diffusion through directional arrangement of fibers, or transverse flow guide grooves are formed in the surfaces of the non-woven materials; the super water absorbent layer is formed by laying the SAP particles or formed by laying SAP particles and wood pulp fibers in a mixed manner. The preparation method comprisesthe steps of preparation of the core body surface layer, preparation of the core body bottom layer, preparation of the super water absorbent layer, multi-layer compounding of the core body material and the like. The upper layer hairiness and the lower layer hairiness in the prepared core body effectively fix SAP and are prevented from sliding and accumulating, the hairiness plays a good role in water absorption and water guide, the phenomenon of gel blockage is avoided, and the final product is soft, comfortable and good in absorption performance.

Description

technical field [0001] The invention relates to a core body for preventing particles from sliding and a preparation method thereof, belonging to the technical field of core body of hygienic absorbent articles. Background technique [0002] With the development of the economy and the improvement of living standards, disposable sanitary absorbent products are becoming more and more common in daily life, and people have higher and higher requirements for their performance. The core is the core of absorbent products, and its performance directly determines the final quality of the product. [0003] At present, the main hygienic absorbent core materials on the market are roughly divided into two types. One is the traditional cotton core, which is a core mixed with fluff pulp and super absorbent resin (SAP). This kind of core is relatively thick and has been gradually replaced by a composite core. The new composite core consists of dust-free paper, fluffy non-woven fabric, and d...

AI Technical Summary

Problems solved by technology

Compared with the cotton core, the thickness of the composite core is reduced, but there is a phenomenon that SAP absorbs water and forms gel to block

[0004] The SAPs of the above two core structures are distributed in a plane in the core, and the amount of SAP that can be added is limited. Adding a large amount of SAP will have an obvious grainy feeling, and there is sliding between the SAPs, which is prone to core delamination and SAP slides and accumulates, resulting in uneven distribution of SAP. When adding a large amount of SAP, the dosage of hot melt adhesive must be increased, and too much hot melt adhesive will cause a decrease in absorbency and air permeability, and the hand feel will deteriorate, which is not conducive to the product. The final performance of

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