Water-absorption core body and preparing method and application thereof

Abstract

The invention relates to a water-absorption core body and a preparing method and application thereof. The preparing method of the water-absorption body comprises the following steps of stretching and carding chemical fiber to form a fluffy cotton layer; forming a first flow diversion layer on the fluffy cotton layer; laying macromolecule water-absorption resin powder on the first flow diversion layer to obtain a water absorption layer; forming a second flow diversion layer on the water absorption layer to obtain a lamination part, wherein both the first flow diversion layer and the second flow diversion layer comprise, by mass, 70-90% of fluff pulp and 10-30% of meldable fiber; conducting hot-wind penetrating forming on the lamination part to obtain a formed lamination part; rolling and cooling the formed lamination part, then using ultrasonic waves to conduct cutting, and making meldable fiber in the first flow diversion layer and the meldable fiber in the second flow diversion layer in the cutting position melt with each other to form the water-absorption core body. The water-absorption core body prepared through the method has a good absorption effect, and water-absorption is not prone to stratification after being bulged.

Description

technical field [0001] The invention relates to the field of sanitary products, in particular to a water-absorbing core and its preparation method and application. Background technique [0002] Usually, diapers, sanitary napkins, etc. need to have better water absorption performance, so they generally have water absorption cores. At present, there are two main production methods for water-absorbent cores. One method is to use fluff paddles and polymer water-absorbent resin (SAP, SUPER ABSORBENT POLYMER,) to mix online. Although the cost is low, the product diffuses quickly and has multiple absorption effects. Good, but after the water-absorbent resin swells after absorbing water, the connection between the fluff pulp is poor, and it is easy to break and swell, which not only affects the comfort of use, but also affects the effective use time. In order to avoid swell, the manufacturer reduces the water-absorbent resin. However, it reduces the absorption and usage time of the...

AI Technical Summary

Problems solved by technology

At present, there are two main production methods for water-absorbent cores. One method is to use fluff paddles and polymer water-absorbent resin (SAP, SUPER ABSORBENT POLYMER,) to mix online. Although the cost is low, the product diffuses quickly and has multiple absorption effects. Good, but after the water-absorbent resin swells after absorbing water, the connection between the fluff pulp is poor, and it is easy to break and swell, which not only affects the comfort of use, but also affects the effective use time. In order to avoid swell, the manufacturer reduces the water-absorbent resin. dosage, but it reduces the absorption and usage time of the product

Another way is to use fluffy non-woven fabric to fix SAP, and use hot-melt composite expanded paper (or dust-free paper, non-woven fabric, etc.) on the upper and lower sides respectively, and obtain the product after winding and cutting. The absorbent core obtained by this method Although the connectivity of the body has been improved, the connectivity is still not enough. After the polymer absorbs water and swells, the stratification is obvious. The single-point multiple water absorption is poor, and the linear expansion is slow, which is easy to cause side leakage and rear leakage.

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