Paper diaper with high absorptivity

Abstract

The utility model relates to the field of disposable hygienic products, and provides a paper diaper with high absorptivity, which comprises a liquid-permeable top layer, an absorption core layer and a liquid-tight bottom layer, the absorption core layer comprises an absorption part and two folding parts, the two folding parts are respectively connected with two ends of the absorption part and are upwards folded to abut against the top surface of the bottom layer, and the two folding parts are connected with the absorption part. A flow guide channel is formed between the two folding parts, and the width of the flow guide channel in the middle is smaller than that of the flow guide channels at the front and rear ends; at least one flow guide groove is formed in the middle of the absorption part, and one end or two ends of the flow guide groove extend to the position below the folding part. The diversion channels enable a large amount of urine to quickly diffuse to the front and rear ends, the coverage area of the middle folding part is larger than that of the front and rear folding parts, the middle high polymer materials are more, the absorption rate of the absorption core layer is improved, part of liquid can enter the space between the folding parts and the absorption part through the diversion grooves, and the diversion infiltration speed of the liquid is increased; the technical problem that the absorption rate of the absorption core body is low is solved.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary products, in particular to a diaper with high absorption rate. Background Art

[0002] The absorbent core of existing diapers adopts a rectangular structure, and the polymer content in each position is the same. However, when urine flows into the diaper, most of the urine is usually absorbed in the middle of the absorbent core, and a small amount of urine flows to the two ends of the absorbent core for absorption. Therefore, a large amount of polymers at the front and back ends cannot absorb the liquid, and the liquid absorption rate of the absorbent core is low. When a large amount of liquid enters the middle of the diaper in a short time, since it is difficult for the top surface of the diaper to absorb a large amount of liquid in a short time, the liquid will diffuse to the surroundings without directionality. When the liquid is diverted more laterally, side leakage may occur. Utility Model Content

[0003] Therefore, in view of the above problems, the utility model provides a diaper with high absorption rate, which solves the technical problem of low absorption rate of the absorption core.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A diaper with high absorption rate comprises a liquid permeable top layer, an absorbent core layer and a liquid impermeable bottom layer, wherein the absorbent core layer comprises an absorbent portion, two folded portions respectively connected to the two ends of the absorbent portion and folded upward to abut against the top surface of the bottom layer, a guide channel is formed between the two folded portions, and the width of the guide channel in the middle portion is smaller than the width of the guide channels at the front and rear ends; the absorbent portion has at least one guide groove in the middle portion, and one end or both ends of the guide groove extend to below the folded portion.

[0006] Further:

[0007] The absorbing part is provided with a plurality of dot-shaped glue spraying parts, and the absorbing part is fixedly connected with the folding part through the glue spraying parts.

[0008] The folded portion of the absorbent core layer does not have the glue spraying portion.

[0009] The guide groove is arranged transversely.

[0010] The edges of both sides of the top of the absorption part are provided with longitudinally arranged convex parts.

[0011] The folding portion is an isosceles trapezoidal structure.

[0012] At least two inclined portions are provided on the edge of each folded portion, and the free ends of the inclined portions are inclined in a direction away from the middle of the absorbent core layer. The inclined portions on the two folded portions are arranged alternately, and the inclined portions are located at the front and rear ends of the absorbent portion.

[0013] The free end of the inclined portion extends beyond the longitudinal center line of the absorbent core layer.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The guide channel of the utility model has the function of longitudinal guide, which can make a large amount of urine diffuse quickly to the front and rear ends to prevent side leakage. The width of the guide channel in the middle is smaller than the width of the guide channels at the front and rear ends, which is conducive to pushing the liquid to move to the front and rear ends, and can reduce the flow rate of the liquid at the front and rear ends to prevent the liquid from leaking from the front and rear ends. At the same time, the coverage area of ​​the folded part in the middle is larger than the coverage area of ​​the folded parts at the front and rear ends. The middle part has more polymer materials, which improves the absorption rate of the absorption core layer. Part of the liquid can enter between the folded part and the absorption part through the guide groove, which improves the diversion and infiltration speed of the liquid; further, a plurality of dot-shaped glue spraying parts are provided on the absorption part, and the liquid can flow in from the gaps in the glue spraying parts to improve the diversion performance of the liquid; further, the folding part of the absorption core layer does not have the glue spraying part, so that when the liquid enters, the folding part can form a buffer space, which is conducive to the diffusion and buffering of the liquid. The liquid absorption speed is improved, and at the same time, the volume on both sides of the absorption core becomes larger, which can effectively prevent the liquid from leaking sideways; further, the convex part can not only increase the amount of edge polymers to prevent side leakage, but also the convex part makes the two sides of the absorption core bulge upward, which can block the liquid from leaking sideways, and when the liquid enters, it is beneficial to form a larger buffer space between the folding part and the absorption part; further, the folding part is an isosceles trapezoidal structure, the width of the guide channel in the middle is equal, the amount of polymer material in the middle is large and the same, the guide channels at both ends gradually become larger, and the amount of polymer material at both ends gradually decreases along the front and rear ends, which can improve the liquid absorption efficiency; further, the inclined part has the function of guiding and blocking flow, which is beneficial to the diffusion of liquid to the left and right ends. When there is more liquid, the liquid will push the inclined part to bend and deform, and can make adaptive changes according to the pressure of the liquid, and can also prevent liquid from leaking from the front and rear ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of the first embodiment;

[0017] Figure 2 is a cross-sectional view of the absorbent core layer of Example 1;

[0018] Figure 3 is a schematic structural diagram of the absorbent core layer in another state of the first embodiment;

[0019] Figure 4 is an expanded cross-sectional view of the absorbent core layer of Example 1;

[0020] Figure 5 is a top view of the absorbent core layer of Example 1;

[0021] Figure 6 yes Figure 5 Schematic diagram of the structure in the expanded state;

[0022] Figure 7 It is a top view of the absorbent core layer of Example 2. DETAILED DESCRIPTION

[0023] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0024] Embodiment 1:

[0025] refer to Figures 1 to 6 The present embodiment provides a diaper with high absorption rate, comprising a liquid-permeable top layer 1, an absorbent core layer 2, and a liquid-impermeable bottom layer 3. The absorbent core layer 2 comprises an absorbent portion 21, two folding portions 22 respectively connected to the two ends of the absorbent portion 21 and folded upward to abut against the top surface of the bottom layer, the folding portion 22 is an isosceles trapezoidal structure, a plurality of dot-shaped glue spraying portions 23 are provided on the absorbent portion 21, the absorbent portion 21 and the folding portion 22 are fixedly connected by the glue spraying portions 23, the folding portion of the absorbent core layer 2 does not have the glue spraying portion 23, a guide channel 24 is formed between the two folding portions 22, and the width of the guide channel 24 in the middle is smaller than the width of the guide channels 24 at the front and rear ends; longitudinally arranged convex portions 25 are provided at the edges of both sides of the top of the absorbent portion 21; a plurality of guide grooves 26 are provided in the middle of the absorbent portion 21, the guide grooves 26 are arranged horizontally, and the two ends of the guide grooves 26 extend to the bottom of the folding portion 22.

[0026] The guide groove 26 may also be configured to have only one end extending to the bottom of the folded portion 22 , depending on the specific situation.

[0027] The glue spraying part 23 may also be in a strip shape or other shapes. The glue spraying part 23 may also be an integral covering structure. In this structure, the flow is only guided by the guide groove 26, and the guiding effect is relatively poor. It is specifically set according to the situation.

[0028] The folded part of the absorbent core layer 2 may also be provided with a glue spraying part 23. This structure has a relatively poor flow guiding effect and is specifically provided according to the situation.

[0029] The guide groove 26 may also be arranged at an angle, or in an arc shape or other structure, depending on the specific situation.

[0030] The above-mentioned convex portion 25 may not be provided, and may be provided according to specific circumstances.

[0031] The folding portion 22 may also be in a triangular, polygonal, arc-shaped or other shapes, depending on the specific situation.

[0032] The liquid-permeable top layer 1 and the liquid-impermeable bottom layer 3 are made of well-known materials and will not be described in detail herein.

[0033] The absorbent core layer 2 of the present invention is not limited to being used in diapers, but can also be used in pull-on pants, sanitary napkins or other disposable products.

[0034] The working method of the first embodiment is:

[0035] When the diaper is worn on the human body, when urine enters, a large amount of urine flows into the middle of the absorbent core layer 2, part of the urine diffuses to the front and rear ends through the diversion channel 24, and part of the urine flows into the space between the absorbent part 21 and the folded part 22 through the diversion groove 26, thereby forming a buffer space 20. Figure 3 When the amount of urine is large, part of the glue spraying part 23 will come off, making it easier for more urine to enter the buffer space 20. At the same time, the volume of the buffer space 20 is increased, and adaptive changes are made according to the amount of urine to improve the diversion and absorption effect of urine; the width of the middle part of the diversion channel 24 is smaller than the liquid width at the front and rear ends, which is conducive to pushing the liquid to move to the front and rear ends, and can reduce the flow rate of the liquid at the front and rear ends to prevent the liquid from leaking from the front and rear ends. The coverage area of ​​the folded part 22 in the middle is larger than the coverage area of ​​the folded parts 22 at the front and rear ends. There is more polymer material in the middle, which improves the absorption rate of the absorption core layer 2.

[0036] Embodiment 2:

[0037] refer to Figures 1 to 7 The main difference between the second embodiment and the first embodiment is that: four inclined portions 27 are provided on the edge of each folded portion 22 of the second embodiment, the free ends of the inclined portions 27 are inclined in a direction away from the middle of the absorbent core layer 2, the inclined portions 27 on the two folded portions 22 are arranged alternately, and the inclined portions 27 are located at the front and rear ends of the absorbent portion 21. The free ends of the inclined portions 27 extend beyond the longitudinal midline of the absorbent core layer 2.

[0038] The number of the inclined portions 27 can be two, four, six or even more, depending on the specific situation.

[0039] The free end of the inclined portion 27 may also be arranged to not exceed the longitudinal center line of the absorbent core layer 2, depending on the specific situation.

[0040] The inclined portion 27 of the second embodiment has the function of guiding and blocking flow, which is beneficial for the liquid to spread to the left and right ends. When there is more liquid, the liquid will push the inclined portion 27 to bend and deform, and can make adaptive changes according to the pressure of the liquid, and can also prevent liquid from leaking from the front and back ends.

[0041] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A diaper with high absorption rate, comprising a liquid permeable top layer, an absorbent core layer, and a liquid impermeable bottom layer, characterized in that: The absorbent core layer includes an absorbent portion, two folded portions respectively connected to the two ends of the absorbent portion and folded upward to rest against the top surface of the bottom layer, a guide channel is formed between the two folded portions, and the width of the guide channel in the middle is smaller than the width of the guide channels at the front and rear ends; the absorbent portion has at least one guide groove in the middle, and one end or both ends of the guide groove extend to the bottom of the folded portion.

2. A diaper with high absorbency according to claim 1, characterized in that: The absorbing part is provided with a plurality of dot-shaped glue spraying parts, and the absorbing part is fixedly connected with the folding part through the glue spraying parts.

3. A diaper with high absorbency according to claim 2, characterized in that: The folded portion of the absorbent core layer does not have the glue spraying portion.

4. A diaper with high absorbency according to claim 1, characterized in that: The guide groove is arranged transversely.

5. The diaper with high absorbency according to claim 1, characterized in that: The edges of both sides of the top of the absorption part are provided with longitudinally arranged convex parts.

6. A diaper with high absorbency according to claim 1, characterized in that: The folding portion is an isosceles trapezoidal structure.

7. A diaper with high absorbency according to any one of claims 1 to 6, characterized in that: At least two inclined portions are provided on the edge of each folded portion, and the free ends of the inclined portions are inclined in a direction away from the middle of the absorbent core layer. The inclined portions on the two folded portions are arranged alternately, and the inclined portions are located at the front and rear ends of the absorbent portion.

8. A diaper with high absorbency according to claim 7, characterized in that: The free end of the inclined portion extends beyond the longitudinal center line of the absorbent core layer.

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