Absorbent product with double-layer structure core and its manufacturing method

Abstract

The invention belongs to the field of personal hygienic products, and discloses an absorption product with a core of a double-layer structure and a manufacturing method of the absorption product. The absorption product comprises a fluid permeability surface layer, a non-fluid-permeability bottom layer and the absorption core between the fluid permeability surface layer and the non-fluid-permeability bottom layer, wherein the absorption core comprises an upper layer and a lower layer; the upper layer is a double-combed and double-formed fluffy sheet; the fluffy sheet of the upper layer is divided into a dense surface and a fluffy surface; the lower layer of the absorption core is a dense sheet; the fluffy surface of the fluffy sheet and the dense sheet of the lower layer are bonded together; macromolecule water-absorbing particles or fibers of the absorption core are evenly distributed between the fluffy surface and the dense sheet of the lower layer. The absorption product has the advantages of being capable of rapidly absorbing liquid and diffusing liquid, good in air permeability and good in closed-fit performance.

Description

technical field [0001] The invention relates to the field of personal hygiene products, in particular to an absorbent product with a double-layer structure core and a manufacturing method thereof. Background technique [0002] Absorbent cores of absorbent articles currently on the market, such as figure 1 As shown, it generally consists of a lower dense sheet 1, a fluffy non-woven fabric 2 with an intermediate support structure, polymer water-absorbing particles (SAP) 3, upper and lower hot melt adhesive layers 4, and an upper dense sheet 5. Some manufacturers also make minor adjustments to the absorbent core, such as figure 1 In the structure, change the types of upper and lower covering materials, replace the dust-free paper with wet-strength paper or hydrophilic spunbond cloth, or adjust the ratio of SAP in the absorbent core, etc. There are also usually manufacturers who press grids or stripes on the absorbent core to make the absorbent appear tighter and thinner, and ...

AI Technical Summary

Problems solved by technology

When the core encounters urine, the polymer on the upper layer quickly absorbs and swells, causing gel blockage, seriously affecting the secondary absorption rate, and resulting in a decrease in the dryness of the surface layer

[0004] 2. The upper and lower layers of the absorbent core are bonded to the fluffy non-woven fabric in the middle by hot-melt adhesive. If less glue is applied, the hot-melt adhesive adheres to SAP, so that the upper dense sheet and the lower dense sheet cannot be bonded to the fluffy non-woven fabric , leading to loose layers of the absorbent core, which cannot be produced; if too much glue is applied, a layer of water-blocking adhesive layer will be formed between the dust-free paper and the fluffy non-woven fabric, which will affect the absorption speed

[0005] 3. The width of the absorbent core is fixed, and the crotch is wider after the product is made. It is very uncomfortable for the baby to wear, and it is easy to form O-shaped legs

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