Water-absorption core body for hygienic product and production technology thereof

Abstract

The invention provides a water-absorption core body for a hygienic product. The water-absorption core body for the hygienic product comprises an upper isolating layer, a water absorption layer and a lower isolating layer, wherein the water absorption layer is formed by more than two instantaneous absorption layers and more than one water locking layer in a vertically stacked mode, and the instantaneous absorption layers are arranged on the top layer and the bottom layer of the water absorption layer respectively; each instantaneous absorption layer comprises, by weight, 50-90% of wood pulp fibers and 10-50% of adhesives, and the wood pulp fibers and the adhesives are mixed to form the instantaneous absorption layers; each water locking layer is formed by macromolecule water absorption particles, and the weight of the macromolecule water absorption particles accounts for 15-75% of the weight of the water absorption layer; the upper isolating layer or the lower isolating layer is made of ES fiber layers or dust-free paper or non-woven fabric. According to the water-absorption core body for the hygienic product, due to the fact that the upper isolating layer and the lower isolating layer are adopted, wood pulp dust cannot be generated in the production process, and the water absorption particles cannot easily go out; due to the fact that combination between the instantaneous absorption layers and the water locking layers is adopted, the water absorption speed is high, the quantity of absorbed water is large, water locking performance is good, and the dry and clean state can be kept all the time.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a water-absorbing core used for sanitary products and a production process thereof. Background technique [0002] Absorbent core is one of the main materials for manufacturing sanitary products such as sanitary napkins, diapers, diapers, and panty liners. The water-absorbent core in the prior art often adopts a three-layer structure, the upper and lower layers are isolation layers or protective layers, and the middle is a water-absorbing particle carrier, and polymer water-absorbent resin particles (SAP) are evenly sprayed on the water-absorbent particle carrier, and the polymer water-absorbent resin As the main water-absorbing material in the water-absorbing carrier, it has good water absorption and water retention. [0003] Chinese patent CN103156737A discloses a water-absorbing core for sanitary products, including more than one water-absorbing core unit, the water-abs...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. Wood pulp dust is easy to be generated in the production process of dust-free paper; 2. The aperture of the dust-free paper layer is large, and the polymer water-absorbing resin is easy to run out, which makes the human body allergic; 3. The polymer on the non-woven fabric The water-absorbent resin is evenly distributed on the non-woven fabric, and the water-locking ability of the polymer water-absorbent resin cannot be fully utilized, which is easy to cause waste

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