Disposable absorption core and preparation method of disposable absorption core

Abstract

The invention discloses a disposable absorption core and a preparation method of the disposable absorption core. The disposable absorption core body comprises an upper layer structure, a middle layer structure, a lower layer structure and at least one crotch groove which are stacked in sequence, the upper layer structure is a fluffy surface layer, the middle layer structure is an ultra-thin core body, the ultra-thin core body comprises an upper-layer fixed non-woven fabric, a first macromolecular water-absorbent resin layer and a lower-layer fixed non-woven fabric which are sequentially arranged, the lower-layer structure comprises a fluffy fixed layer, a second macromolecular water-absorbent resin layer and a fixed wrapping layer, the crotch groove comprises a first groove body and a second groove body which are vertically overlapped, the first groove body extends in the length direction of the ultrathin core body and vertically penetrates through the first polymer water-absorbent resin layer, and the second groove body extends in the length direction of the fluffy fixing layer and vertically penetrates through the fluffy fixing layer. The disposable absorption core provided by the invention can reduce the back osmosis liquid in contact with the skin, reduce the amount of liquid reverse osmosis, and meanwhile, the crotch can be kept comfortable.

Description

technical field [0001] The invention relates to the technical field of disposable sanitary products, in particular to a disposable absorbent core and a preparation method thereof. Background technique [0002] In disposable hygiene products, the most important structure is the absorbent core. The conventional structure of the absorbent core of the disposable sanitary products currently on the market is an upper layer of hydrophilic non-woven fabric, a lower layer of hydrophilic non-woven fabric and an absorbent core between the two. For absorbent cores, there are mainly three categories: the first category: absorbent cores mixed with traditional wood pulp fibers and polymer water-absorbent resins; the second category: composite cores mixed with wet-strength paper, expanded paper and polymer water-absorbent resins ; The third category: non-woven fabrics and polymer water-absorbing resin bonded by hot-melt adhesive, through the ultra-thin core formed by folding parts. At pre...

AI Technical Summary

Problems solved by technology

However, its multiple absorption capacity is poor, and its conduction and diffusion capacity is insufficient, resulting in low utilization of polymer water-absorbent resins.

Moreover, after a certain part of the absorbent core of this structure absorbs a certain amount of liquid, it will take a long time to fully diffuse due to its poor conduction and diffusion performance.

And when the diaper is put under pressure by the infant, the liquid will seep back to the surface layer, causing the contact surface to be wet and causing discomfort to the infant's skin

The third type of absorbent core will be thinner than the second type of absorbent core, but its liquid absorption speed will be relatively poor, because its polymer water-absorbent resin is concentrated together, which cannot provide a liquid storage environment and polymer water absorption The expansion space after resin absorption is limited, so there is a risk of liquid leakage when this type of absorbent body is applied to disposable hygiene products

However, after absorbing the liquid, the rewet water will be relatively low, making the surface of disposable sanitary products drier

The absorbent cores of the prior art disposable hygiene products generally have good properties, but there are still some deficiencies and disadvantages

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