Absorbing core for treating excrement and manufacturing method for absorbing core

Abstract

The invention provides an absorbing core for treating excrement. The absorbing core comprises a surface layer, a bottom layer and SAP (super absorbent polymer) layers, wherein SAP wraps the surface layer and the bottom layer to form the SAP layers; the absorbing core is divided into small absorbing core bodies by adhesion portions; each small absorbing core body is projected relative to the corresponding adhesion portion in the thickness direction; and recesses are formed by the adhesion portions among the small adjacent absorbing core bodies. The invention also provides a manufacturing method for the absorbing core. The manufacturing method comprises the following steps of uniformly spreading the SAP on the bottom layer by using a spreader; covering the material of the surface layer; acting on the paved material by using a roll; and performing final adhesion modeling. By using the absorbing core for treating the excrement and the manufacturing method for the absorbing core, the problems that SAP particles in an adhesion process in the prior art are locally accumulated into clusters, after an absorbing core absorbs liquid, the liquid stays at local portions of the absorbing core, and cannot be quickly spread uniformly are solved. The absorbing core for treating the excrement has the advantages of high SAP utilization rate, high liquid absorbing effect and good tactility.

Description

technical field [0001] The invention relates to the field of personal hygiene products, in particular to an absorbent core for treating excrement and a manufacturing method thereof. Background technique [0002] Absorbent cores for treating excrement in the prior art, such as figure 1 As shown, it is generally composed of surface layer 1, SAP (super absorbent resin) 2, support fiber 6, and bottom layer 4, and the layers are bonded by spraying hot melt adhesive. [0003] However, the above-mentioned absorbent core often has the following disadvantages during use: [0004] 1. Both the surface layer and the bottom layer of the absorbent core are bonded to the middle support fiber by hot melt adhesive, and the middle support fiber is mixed with SAP. During the sizing process, the hot melt adhesive will directly adhere to part of the SAP. After SAP absorbs liquid, the volume will expand, but if the bonding strength is too large, there will be insufficient space for SAP expansio...

AI Technical Summary

Problems solved by technology

After SAP absorbs liquid, the volume will expand, but if the bonding strength is too large, there will be insufficient space for SAP expansion, which will weaken the function of SAP and reduce the utilization rate; The glue directly adheres part of the SAP, so that the bonding strength between the layers is not enough, and the layers are scattered when the SAP expands, making it unusable

Therefore, the amount of sizing should be strictly controlled, and poor control often leads to an increase in the scrap rate

[0005] 2. If figure 2 As shown, SAP particles have mobility after absorbing liquid and swelling, and the current adhesive effect is only on the contact surface between the layers, and there is no fixing effect on the supporting fiber and SAP in the middle, so SAP has no hot melt adhesive effect. There will be displacement in some parts, resulting in local accumulation and faults in other parts, which not only affects the secondary liquid absorption effect, but also affects the wearing comfort

[0006] 3. When the absorbent core absorbs liquid, the liquid cannot spread quickly to both ends, but gathers in a local area, causing the area to swell and bulge into a bag, and it is easy to cause liquid reverse osmosis, which affects the touch of the skin and damages the skin

[0007] 4. In the production process, in order to make the SAP adhere to the hot melt adhesive as little as possible, there is also a step of sweeping the SAP into the supporting fiber in the middle, which is labor-intensive and time-consuming

Images