Absorption core body

Abstract

The invention discloses an absorption core body, which comprises an absorption layer and at least one diffusion liquid storage layer connected with the lower surface of the absorption layer; the absorption layer comprises a non-woven fabric layer and SAP arranged in the gap of the non-woven fabric layer; the absorption layer is provided with X first diversion grooves which divide the absorption layer into a plurality of absorption areas; the diffusion liquid storage layer comprises the non-woven fabric layer and the SAP arranged in the gap of the non-woven fabric layer, and Y second guide grooves are formed in the diffusion liquid storage layer; on the diffusion liquid storage layer, the opposite bulge around the second diversion grooves is connected with the lower surface of the absorption layer; X and Y are positive integers, and Y >= X. According to the absorption core body, the air permeability and the liquid permeability can be improved to the maximum extent, specific surface areaand porosity are high, the liquid diversion infiltration speed is ultra-fast, and instantaneous liquid trapping capacity is strong, thereby effectively improving the overall utilization rate of the core body.

Description

technical field [0001] The invention belongs to the field of sanitary products, and in particular relates to an absorbent core. Background technique [0002] At present, the common absorbent cores for treating human excrement on the market can be roughly divided into two types. [0003] One is a composite core, such as figure 1 As shown, it generally consists of the outermost two layers of dust-free paper 1, the middle non-woven fabric layer 2, and two layers of SAP3 (super absorbent resin). [0004] The other is cotton core body, such as figure 2 As shown, it consists of dust-free paper 1 or hydrophilic cloth wrapped fluff pulp 13 and SAP3. [0005] Some manufacturers make minor adjustments on the basis of the above structure, such as figure 1 A layer of wood pulp is added to the core structure of the figure 2 The cotton core is embossed with a grinding wheel. [0006] In the absorbent core of the prior art, the conduction and diffusion of the liquid is carried out ...

AI Technical Summary

Problems solved by technology

[0008] 1. If figure 1 As shown, this type of core is prone to poor diffusivity, the gaps are narrowed after repeated pressurization, and the absorption performance is poor, especially when the absorption time is too long during the second absorption, and the utilization rate of the area outside the central area of ​​the entire core is low. , and because this type of core needs to fix a large amount of SAP, it must be controlled by increasing the amount of hot melt adhesive, and the amount of hot melt adhesive will directly affect the absorption performance of the core

[0009] 2. If figure 1 , figure 2 As shown, the two types of cores become flat after absorbing liquid, and generally have poor air permeability before absorbing liquid. Even if the pattern is pressed on the core, it will be stretched after absorbing liquid, and the core will prop up the surface layer, so that The drop of the pressing groove on the surface layer is reduced, which in turn makes the contact area between the surface layer and the skin large, and the air on the skin surface cannot fully circulate to form convection, and the harmful gas volatilized from the liquid is easy to cause damage to the skin and induce various skin irritations. sick

[0010] 3. If figure 1 , figure 2 As shown, the specific surface area of ​​this type of core is small, the absorption area is single, the overall porosity of the core is extremely low, and the absorption speed is slow. Once some gaps are blocked, the overall liquid permeability of the core will be significantly affected.

[0011] 4. If figure 2 As shown, the volume of this type of core expands after SAP absorbs liquid, and the SAP after absorbing water tends to slip

Even if the grid or stripes are pressed on the absorbent core, the embossing will be lifted after the liquid is absorbed, making it impossible to fix the position of the SAP particles

In the case of a slight external force, the SAP in the liquid-absorbing part is easy to shift, resulting in local accumulation and faults in other parts, which not only affects the secondary liquid-absorbing effect, but also affects the comfort of wearing

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