CN216676133U - Composite core absorption structure - Google Patents

Abstract

The utility model relates to the field of disposable sanitary products, and discloses a composite core body absorption structure which comprises a liquid-permeable surface layer (1), a liquid-impermeable bottom layer (2) and a composite core body (3) arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer, wherein the composite core body (3) comprises a first absorption core (301) and a second absorption core (302), and the first absorption core (301) is arranged on the upper surface or the lower surface of the second absorption core (302); the outer wall of the first absorption core (301) is wrapped by a first hydrophilic wrapping layer (303), or the upper surface of the first absorption core (301) is covered by a hydrophilic covering layer (304); the outer wall of the second absorbent core (302) may or may not be wrapped with a second hydrophilic wrapping layer (305). In this application, the cooperation of first absorption core and second absorption core is used and can be made body fluid by the diffusion absorption fast in compound core, can effectively promote the utilization ratio to compound core, promotes the absorption effect.

Description

Composite core absorption structure

Technical Field

The utility model relates to the field of disposable hygienic products, in particular to a composite core body absorption structure.

Background

The disposable absorption articles comprise sanitary products such as paper diapers, pull-up pants, training pants, sanitary towels, incontinence pants and the like,

for convenience of description, the diaper will be described below as an example, and the related contents are also applicable to other disposable absorbent articles.

Traditional panty-shape diapers mainly include from top to bottom the liquid-permeable surface course, absorption core and the liquid-tight nature bottom that the stromatolite set up in proper order, and this absorber is used for absorbing and keeps human excreta liquid, and liquid-permeable surface course provides comfortable and dry and comfortable sensation when being used for contacting with the health, allows liquid to pass through freely simultaneously, gets into the absorber of lower floor, and liquid-tight nature bottom is arranged in keeping absorption liquid in the absorber to prevent that the liquid that absorbs from making dirty wearer's trousers.

Absorption core in most absorption article of selling on the market is at the manufacturing process, and the material is mostly the mixture of polymer water-absorbing resin and fine hair oar, and the absorber is when absorbing the excrement, and the polymer water-absorbing resin on absorption core surface can absorb the excrement with the fine hair oar at the very first time, but this kind of absorption core is after absorbing water, and is looser because of the material structure is relatively, in case absorb water, will reverse the infiltration greatly, play to stick together, the fault, through the motion extrusion, the appearance core that often can't avoid warp. In addition, the water-absorbent material present inside the absorbent core cannot exert its effect, resulting in poor absorption effect, failure to ensure or increase the absorption capacity of the absorbent core, and waste of production materials.

The other absorption core is formed by sequentially laminating an upper layer material, bulky non-woven fabrics and a lower layer material, wherein the high polymer water-absorbing resin is arranged between the upper layer material and the bulky non-woven fabrics, when the absorption core is used, liquid can be concentrated in the middle of the absorption core and then diffused to the periphery when entering the disposable hygienic product, the absorption core absorbs the liquid, the outer surfaces of some absorption cores are provided with diversion trenches which are usually arranged along the length direction, the high polymer materials densely distributed and arranged are arranged in the absorption core, if a large amount of liquid enters the absorption core at the same time, the liquid is usually concentrated in the middle of the absorption core, the middle of the absorption core is usually saturated quickly, the liquid is usually diffused to the periphery after the middle of the absorption core is saturated, and the liquid is slowly diffused in the absorption core and is difficult to absorb a large amount of liquid accumulated in the middle of the absorption core, part of the liquid may pass through the flow guide grooves and cross over the absorbent core, and part of the liquid may leak out, and the absorption at each part of the absorbent core is not uniform, and the amount of the liquid absorbed at the peripheral side is relatively small, so that the flow guide effect inside the absorbent core is poor, the absorption rate is slow, and the absorption effect is poor. In the manufacture of absorbent cores, it is difficult to form channels within the absorbent core to enhance the absorbent capacity of the absorbent core. In addition, the upper layer of the absorption core is denser, the lower layer of the absorption core is looser, and the rapid absorption of body fluid is influenced from the perspective of the liquid speed of the absorption body, the absorption of the body fluid is too slow, the infiltration of the body fluid is not facilitated, and the probability of increasing the leakage of the body fluid is increased; thereby affecting the use of the absorbent hygiene article.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: aiming at the problems in the prior art, the utility model provides a composite core body absorption structure, which solves the problems of low utilization efficiency and poor absorption effect of an absorption core in the existing absorption article.

The technical scheme is as follows: the utility model provides a composite core body absorption structure, which comprises a liquid-permeable surface layer, a liquid-impermeable bottom layer and a composite core body arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer, wherein the composite core body comprises a first absorption core and a second absorption core, and the first absorption core is arranged on the upper surface or the lower surface of the second absorption core; the outer wall of the first absorption core is wrapped with a first hydrophilic wrapping layer, or the upper surface of the first absorption core is covered with a hydrophilic covering layer; the outer wall of the second absorbent core may or may not be wrapped with a second hydrophilic wrap layer.

Further, an upper cover layer is further arranged on the upper surface of the second absorption core and in the second hydrophilic wrapping layer, and/or a lower cover layer is further arranged on the lower surface of the second absorption core and in the second hydrophilic wrapping layer. Further, a flow guide layer is arranged between the composite core body and the liquid-permeable surface layer. The arrangement of the flow guide layer enables body fluid to be more rapidly guided to cover the whole area of the composite core body, and the utilization efficiency of the composite core body is improved as much as possible.

Preferably, if the outer wall of the first absorbent core is wrapped with the first hydrophilic wrapping layer, the outer wall of the second absorbent core is wrapped with the second hydrophilic wrapping layer, and the upper and lower surfaces of the second absorbent core are respectively provided with the upper covering layer and the lower covering layer, the upper surface of the first hydrophilic wrapping layer is fixedly connected with the lower surface of the flow guide layer, and the lower surface of the first hydrophilic wrapping layer is fixedly connected with the upper surfaces of the second hydrophilic wrapping layer and the upper covering layer; the upper surface of the second absorption core is fixedly connected with the lower surface of the upper covering layer, and the lower surface of the second absorption core is fixedly connected with the upper surface of the lower covering layer; the lower surface of the second hydrophilic wrapping layer is fixedly connected with the liquid-tight bottom layer; if the outer wall of the first absorption core is wrapped with the first hydrophilic wrapping layer and the outer wall of the second absorption core is not wrapped with the second hydrophilic wrapping layer, the upper surface of the first hydrophilic wrapping layer is fixedly connected with the lower surface of the flow guide layer, and the lower surface of the first hydrophilic wrapping layer is fixedly connected with the upper surface of the second absorption core; the lower surface of the second absorption core is fixedly connected with the liquid-tight bottom layer; if the upper surface of the first absorption core is covered with the hydrophilic covering layer, the outer wall of the second absorption core is covered with the second hydrophilic covering layer, and the upper surface and the lower surface of the second absorption core are respectively provided with an upper covering layer and a lower covering layer, the upper surface of the hydrophilic covering layer is fixedly connected with the flow guide layer, the lower surface of the hydrophilic covering layer is fixedly connected with the upper surface of the first absorption core, the lower surface of the first absorption core is fixedly connected with the upper surface of the upper covering layer, the upper surface of the second absorption core is fixedly connected with the lower surface of the upper covering layer, and the lower surface of the second absorption core is fixedly connected with the upper surface of the lower covering layer; the lower surface of the second hydrophilic wrapping layer is fixedly connected with the liquid-tight bottom layer; if the upper surface of the first absorption core is covered with the hydrophilic covering layer and the outer wall of the second absorption core is not covered with the second hydrophilic wrapping layer, the upper surface of the hydrophilic covering layer is fixedly connected with the lower surface of the flow guide layer, the lower surface of the hydrophilic covering layer is fixedly connected with the upper surface of the first absorption core, and the lower surface of the first absorption core is fixedly connected with the upper surface of the second absorption core; the lower surface of the second absorption core is fixedly connected with the liquid-tight bottom layer.

Preferably, the upper layer material and the lower layer material are both non-woven fabrics, dust-free cloths or toilet paper.

Furthermore, the two transverse sides of the upper surface of the liquid-permeable surface layer are respectively provided with a leakage-proof separation edge. The side leakage of the composite core body can be effectively prevented by the arrangement of the leakage-proof separation edges.

Further, flow guide grooves are arranged on the upper surface of the first absorption core and/or the second absorption core. The arrangement of the flow guide grooves enables the first absorption core and/or the second absorption core to guide flow to the front end and the rear end when absorbing body fluid, so that absorption and diffusion are faster and better.

Preferably, the first absorbent core is identical in shape and size to the second absorbent core.

Preferably, if the first absorbent core is arranged on the upper surface of the second absorbent core, the width of the first absorbent core is 5-40 mm smaller and the length of the first absorbent core is 10-300 mm smaller than that of the second absorbent core; if the first absorption core is arranged on the lower surface of the second absorption core, the width of the second absorption core is 5-40 mm smaller than that of the first absorption core, and the length of the second absorption core is 10-300 mm smaller than that of the first absorption core. If the first absorbent core is arranged on the upper surface of the second absorbent core, the first absorbent core can be narrower than the second core, and the length of the first absorbent core can also be shorter than the second core.

Has the advantages that:

the first absorption core is higher in diffusion capacity and the second absorption core is higher in absorption capacity, so that the absorption cores of the two structures are combined together to form the composite core.

Because the first absorption core is reverse to ooze greatly after absorbing water, the very easy appearance sticks together, the fault, through the motion extrusion, the appearance core that often can't avoid warp. So in this application, wrap up first hydrophilic overburden alone with the surface of first absorption core, or it has hydrophilic overburden to cover at its upper surface, preferentially wrap up first hydrophilic overburden alone, the material in the first absorption core of like this wraps up alone, play to lump after the minimizing absorbs water, the condition of deformation such as fault, if the upper surface at first absorption core covers hydrophilic overburden, then need pass through glue and the second of first absorption core outer wall lower surface of first absorption core between the hydrophilic parcel layer bonding fixed, the upper surface passes through glue and hydrophilic overburden between bonding fixed, the condition of deformation such as the lump appears after preventing that first absorption core from absorbing water, fault.

This application will do benefit to the first absorption core of diffusion and do benefit to the second absorption core complex of absorption to be in the same place, absorption through first absorption core is fast, the diffusion is long, the advantage that the infiltration ability is strong diffuses the body fluid to the area as far as possible of first absorption core fast, then the second of recycling absorbs the absorption space of core big, the absorbed dose is big, in time lock water, the performance that prevents liquid and spill absorbs the body fluid fast, thus, the cooperation of first absorption core and second absorption core is used and just can be made the body fluid by the diffusion absorption fast in compound core, can effectively promote the utilization ratio to compound core, promote the absorption effect.

Drawings

FIG. 1 is a schematic structural view of an absorbent composite core structure according to embodiment 1;

FIG. 2 is a schematic structural view of an absorbent composite core structure according to embodiment 2;

FIGS. 3 and 4 are schematic structural views of the composite core absorbent structure of embodiment 3;

FIGS. 5 and 6 are schematic structural views of the composite core absorbent structure of embodiment 5;

FIGS. 7 and 8 are schematic structural views of the composite core absorbent structure of embodiment 6;

figure 9 is a section view of a second absorbent core.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Embodiment 1:

the embodiment provides a composite core body absorption structure, as shown in fig. 1, comprising a liquid-permeable surface layer 1, a liquid-impermeable bottom layer 2 and a composite core body 3 arranged between the liquid-permeable surface layer and the liquid-permeable surface layer, wherein a flow guide layer 5 can be selectively arranged between the composite core body 3 and the liquid-permeable surface layer 1, and two lateral sides of the upper surface of the liquid-permeable surface layer 1 are respectively provided with a leakage-proof separation edge 4. The composite core body 3 comprises a first absorption core 301 which is beneficial to diffusion and a second absorption core 302 which is beneficial to absorption, wherein the shapes and the sizes are completely the same, and the first absorption core 301 is arranged on the upper surface of the second absorption core 302; in practical applications, channels may also be provided on the upper surface of the first absorbent core 301 and/or the second absorbent core 302.

The first absorption core 301 is composed of a mixture of fluff pulp and high molecular water absorption resin applied at fixed points, and the outer wall of the first absorption core is independently wrapped with a first hydrophilic wrapping layer 303; as shown in fig. 9, the second absorbent core 302 is formed by sequentially stacking an upper layer material 3021, a bulky nonwoven fabric 3022 and a lower layer material 3023, the upper layer material 3021 and the lower layer material 3023 are preferably made of dust-free cloth, the upper and lower surfaces of the bulky nonwoven fabric 3022 are sprayed with high molecular water absorbent resin, the outer wall of the second absorbent core 302 is wrapped with a second hydrophilic wrapping layer 305, and the upper and lower surfaces of the second absorbent core 302 and the second hydrophilic wrapping layer 305 are further covered with an upper covering layer 306 and a lower covering layer 307, respectively. The upper surface of the first hydrophilic wrapping layer 303 is bonded with the lower surface of the diversion layer 5 through glue, and the lower surface is bonded with the upper surfaces of the second hydrophilic wrapping layer 305 and the upper covering layer 306 through glue; the lower surface of the second hydrophilic wrapping layer 305 is bonded with the liquid-impermeable bottom layer 2 through glue.

Embodiment 2:

this embodiment is substantially the same as embodiment 1, except that the outer wall of the first absorbent core 301 in this embodiment does not wrap the first hydrophilic coating 303 alone, but the upper surface of the first absorbent core 301 is covered with the hydrophilic coating 304, as shown in fig. 2, the hydrophilic coating 304, the first absorbent core 301, the upper coating 306, the second absorbent core 302, and the lower coating 307 are all wrapped with the second hydrophilic coating 305, as shown in fig. 2, the upper surface of the hydrophilic coating 304 and the upper surface of the second hydrophilic coating 305 are bonded to the lower surface of the flow guide layer 5 by glue, the lower surface of the hydrophilic coating 304 and the upper surface of the first absorbent core 301 are bonded by glue, and the lower surface of the first absorbent core 301 and the upper surface of the upper coating 306 are bonded by glue.

Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.

Embodiment 3:

this embodiment is substantially the same as embodiment 1 or 2, except that the first absorbent core 301 and the second absorbent core 302 in this embodiment are not completely the same in shape and size, and the first absorbent core 301 and the second absorbent core 302 are smaller in both width and length, as shown in fig. 3 and 4, and in practical use, the first absorbent core 301 may be set to be 5 to 40mm smaller in width and 10 to 300mm smaller in length than the second absorbent core 302, depending on the product.

Otherwise, this embodiment is completely the same as embodiment 1 or 2, and will not be described herein.

Embodiment 4:

this embodiment is substantially the same as embodiment 3, except that the first absorbent core 301 and the second absorbent core 302 in this embodiment are each composed of a mixture of fluff pulp and a water-absorbent polymer resin.

Otherwise, this embodiment is completely the same as embodiment 3, and will not be described herein.

Embodiment 5:

this embodiment is substantially the same as embodiment 4, and differs therefrom only in that the outer wall of the second absorbent core 302 in this embodiment is not wrapped with the second hydrophilic wrapping layer 305, and the upper and lower surfaces of the second absorbent core 302 are not provided with the upper and lower covering layers 306 and 307, and as shown in fig. 5, the lower surface of the first hydrophilic wrapping layer 303 is directly bonded and fixed to the upper surface of the second absorbent core 302, and the lower surface of the second absorbent core 302 is directly bonded and fixed to the upper surface of the liquid-impermeable back sheet 2.

Alternatively, the outer wall of the first absorbent core 301 in this embodiment is not wrapped by the first hydrophilic wrapping layer 303, but the hydrophilic cover layer 304 is covered above the first absorbent core 301, the outer wall of the second absorbent core 302 is not wrapped by the second hydrophilic wrapping layer 305, and the upper and lower surfaces of the second absorbent core 302 are not provided with the upper cover layer 306 and the lower cover layer 307, as shown in fig. 6, the upper surface of the first absorbent core 301 is directly bonded and fixed with the lower surface of the hydrophilic cover layer 304, the lower surface of the first absorbent core 301 is directly bonded and fixed with the upper surface of the second absorbent core 302, and the lower surface of the second absorbent core 302 is directly bonded and fixed with the upper surface of the liquid-impermeable back sheet 2.

Otherwise, this embodiment is completely the same as embodiment 4, and will not be described herein.

Embodiment 6:

this embodiment is substantially the same as embodiment 3, and differs therefrom only in that the first absorbent core 301 in this embodiment is positioned below the second absorbent core 302. The second absorbent core 302 has a smaller width and length than the first absorbent core 301, as shown in fig. 7 and 8, and in practical applications, the second absorbent core 302 can be set to be 5-40 mm smaller than the first absorbent core 301 and 10-300 mm smaller than the first absorbent core 301 according to different products. As shown in fig. 7 and 8.

Fig. 7 shows the situation where the first absorbent core 301 is wrapped with the first hydrophilic wrapping layer 303 and the second absorbent core 302 is wrapped with the second hydrophilic wrapping layer 305, where the upper surface of the first hydrophilic wrapping layer 303 is fixedly bonded to the lower surface of the second hydrophilic wrapping layer 305, the lower surface of the first hydrophilic wrapping layer 303 is fixedly bonded to the liquid-impermeable bottom layer 2, and the upper surfaces of the second hydrophilic wrapping layer 305 and the upper covering layer 306 are fixedly bonded to the lower surface of the fluid-permeable layer 5.

Fig. 8 shows the case where the upper surface of the first absorbent core 301 is covered with the hydrophilic cover layer 304 and the second absorbent core 302 is covered with the second hydrophilic covering layer 305, in which case the second hydrophilic covering layer 305 covers the upper cover layer 306, the second absorbent core 302, the lower cover layer 307, the hydrophilic cover layer 304 and the first absorbent core 301, and in this case, the upper surfaces of the upper cover layer 306 and the second hydrophilic covering layer 305 are adhesively secured to the lower surface of the fluid-directing layer 5 and the lower surface of the lower cover layer 307 is adhesively secured to the upper surface of the hydrophilic cover layer 304.

Otherwise, this embodiment is completely the same as embodiment 3, and will not be described herein.

The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. A composite core absorbent structure comprising a liquid-permeable top sheet (1), a liquid-impermeable back sheet (2) and a composite core (3) disposed therebetween, characterized in that the composite core (3) comprises a first absorbent core (301) for diffusion and a second absorbent core (302) for absorption, the first absorbent core (301) being disposed on the upper surface or the lower surface of the second absorbent core (302); the outer wall of the first absorption core (301) is wrapped by a first hydrophilic wrapping layer (303), or the upper surface of the first absorption core (301) is covered by a hydrophilic covering layer (304); the outer wall of the second absorbent core (302) may or may not be wrapped with a second hydrophilic wrapping layer (305).

2. The composite core absorbent structure of claim 1, wherein an upper cover layer (306) is further disposed on the upper surface of the second absorbent core (302) within the second hydrophilic casing layer (305), and/or a lower cover layer (307) is further disposed on the lower surface of the second absorbent core (302) within the second hydrophilic casing layer (305).

3. A composite core absorbent structure according to claim 2, characterized in that between the composite core (3) and the liquid-permeable top sheet (1) there is further provided a flow-guiding layer (5).

4. A composite core absorbent structure according to claim 3, wherein if the outer wall of the first absorbent core (301) is wrapped with the first hydrophilic wrapping (303), the outer wall of the second absorbent core (302) is wrapped with the second hydrophilic wrapping (305), and the upper and lower surfaces of the second absorbent core (302) are provided with an upper cover layer (306) and a lower cover layer (307), respectively, the upper surface of the first hydrophilic wrapping (303) is fixedly connected with the lower surface of the flow guide layer (5), and the lower surface is fixedly connected with the upper surfaces of the second hydrophilic wrapping (305) and the upper cover layer (306); the upper surface of the second absorbent core (302) is fixedly connected with the lower surface of the upper cover layer (306), and the lower surface of the second absorbent core (302) is fixedly connected with the upper surface of the lower cover layer (307); the lower surface of the second hydrophilic wrapping layer (305) is fixedly connected with the liquid-tight bottom layer (2);

if the outer wall of the first absorption core (301) is wrapped by the first hydrophilic wrapping layer (303), and the outer wall of the second absorption core (302) is not wrapped by the second hydrophilic wrapping layer (305), the upper surface of the first hydrophilic wrapping layer (303) is fixedly connected with the lower surface of the flow guide layer (5), and the lower surface of the first hydrophilic wrapping layer is fixedly connected with the upper surface of the second absorption core (302); the lower surface of the second absorbent core (302) is fixedly connected with the liquid-impermeable back sheet (2);

if the upper surface of the first absorption core (301) is covered with the hydrophilic covering layer (304), the outer wall of the second absorption core (302) wraps the second hydrophilic wrapping layer (305), and the upper and lower surfaces of the second absorption core (302) are respectively provided with an upper covering layer (306) and a lower covering layer (307), the upper surface of the hydrophilic covering layer (304) is fixedly connected with the flow guide layer (5), the lower surface of the hydrophilic covering layer is fixedly connected with the upper surface of the first absorption core (301), the lower surface of the first absorption core (301) is fixedly connected with the upper surface of the upper covering layer (306), the upper surface of the second absorption core (302) is fixedly connected with the lower surface of the upper covering layer (306), and the lower surface of the second absorption core (302) is fixedly connected with the upper surface of the lower covering layer (307); the lower surface of the second hydrophilic wrapping layer (305) is fixedly connected with the liquid-tight bottom layer (2);

if the upper surface of the first absorption core (301) is covered with the hydrophilic covering layer (304) and the outer wall of the second absorption core (302) is not wrapped with the second hydrophilic wrapping layer (305), the upper surface of the hydrophilic covering layer (304) is fixedly connected with the lower surface of the flow guide layer (5), the lower surface of the hydrophilic covering layer is fixedly connected with the upper surface of the first absorption core (301), and the lower surface of the first absorption core (301) is fixedly connected with the upper surface of the second absorption core (302); the lower surface of the second absorbent core (302) is fixedly connected with the liquid-impermeable back sheet (2).

5. A composite core absorbent structure according to any of claims 1 to 4, wherein the liquid-permeable top sheet (1) is further provided with leakproof barrier cuffs (4) on both lateral sides of its upper surface.

6. The composite core absorbent structure according to any of claims 1 to 4, wherein channels are provided in the upper surface of the first absorbent core (301) and/or the second absorbent core (302).

7. A composite core absorbent structure according to any of claims 1 to 4, wherein the first absorbent core (301) and the second absorbent core (302) are identical in shape and size.

8. A composite core absorbent structure according to any of claims 1 to 4, wherein if said first absorbent core (301) is provided on the upper surface of said second absorbent core (302), said first absorbent core (301) has a width of 5 to 40mm smaller and a length of 10 to 300mm smaller than said second absorbent core (302);

if the first absorbent core (301) is provided on the lower surface of the second absorbent core (302), the second absorbent core (302) has a width of 5 to 40mm smaller and a length of 10 to 300mm smaller than the first absorbent core (301).

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