CN217611747U - Leak-proof paper diaper core and paper diaper - Google Patents

Abstract

The utility model relates to a leak-proof paper diaper core body, which comprises a first hydrophilic layer, a first adhesive layer, a first macromolecular layer, a fluffy layer, a second macromolecular layer, a second adhesive layer and a second hydrophilic layer which are arranged in sequence; first adhesive linkage is equipped with the edge the first no gluey region and the second that the long edge direction on first hydrophilic layer set up do not have gluey region, first macromolecular layer is fixed on the first adhesive linkage and form first guiding gutter and second guiding gutter, first no gluey regional position with the position in first guiding gutter aligns and forms first water conservancy diversion space jointly, the second does not have gluey regional position with the position in second guiding gutter aligns and forms second water conservancy diversion space jointly. The utility model discloses a leak-proof panty-shape diapers core has improved the water conservancy diversion effect of core on the one hand based on first water conservancy diversion space and second water conservancy diversion space, and on the other hand makes the core present the U type when wearing, and then obtains the good side leakage effect of preventing, has the advantage that absorbs fast, prevent the side leakage.

Description

Leak-proof paper diaper core and paper diaper

Technical Field

The utility model relates to a panty-shape diapers technical field especially relates to a leak protection panty-shape diapers core and panty-shape diapers.

Background

The paper diaper is a daily product commonly used by babies, the traditional paper diaper adopts fluff pulp as a paper diaper core body, the thickness of the core body is relatively thick, and the wearing comfort is relatively poor, the traditional ultrathin core body for the paper diaper generally comprises a lower seepage layer, a macromolecule layer, a flow guide layer, a macromolecule layer and a diffusion layer, the core body adopts macromolecules as a water absorption material, and the macromolecules are fixed through the fluff layer, so that the thickness of the core body is effectively reduced, the core body is more flat and uniform than the traditional fluff pulp core body, and the problem that the traditional fluff pulp core body is stuck due to fault is solved; however, this kind of core lacks effective water conservancy diversion layer, leads to diffusion length short, the material utilization ratio that absorbs water low when in actual use, and in addition, this kind of core is simple rectangular shape when in actual use, leak protection that can not be fine.

In order to improve the utilization rate of the water-absorbing material, the existing core body is provided with a plurality of gaps on the upper layer of high-molecular water-absorbing resin, and the fluffy layer is arranged in the gaps, so that the purpose that the upper and lower high-molecular layers can absorb instantly is realized, and the liquid absorption speed of the core body is accelerated; such cores still have the risk of side leakage.

SUMMERY OF THE UTILITY MODEL

Based on this, an object of the utility model is to provide a leak-proof panty-shape diapers core and panty-shape diapers, it is regional to be equipped with first no glue region and second no glue region on the first adhesive linkage of panty-shape diapers core, fix at first macromolecular layer and form first guiding gutter and second guiding gutter behind first adhesive linkage, the position in first guiding gutter aligns and forms first water conservancy diversion space jointly with the position in first no glue region, the position in second guiding gutter aligns and forms second water conservancy diversion space jointly with the position in second no glue region, first water conservancy diversion space and second water conservancy diversion space have improved the water conservancy diversion effect of core on the one hand, on the other hand makes the core present the U type when wearing, and then obtain the good side leakage effect of preventing, have the absorption fast, the advantage of side leakage is prevented.

A leak-proof paper diaper core body. The multifunctional leather comprises a first hydrophilic layer, a first bonding layer, a first macromolecular layer, a fluffy layer, a second macromolecular layer, a second bonding layer and a second hydrophilic layer which are arranged in sequence; the first adhesive layer is arranged on the first hydrophilic layer and provided with a first glue-free area and a second glue-free area, and the first glue-free area and the second glue-free area are arranged along the long edge direction of the first hydrophilic layer; the first bonding layer comprises a first area, a second area and a third area, the second area is located in the center of the first bonding layer, the first area and the third area are respectively located on two sides of the second area, the first glue-free area is arranged between the first area and the second area, and the second glue-free area is arranged between the second area and the third area; the first polymer layer is fixed on the first bonding layer and forms a first diversion trench and a second diversion trench, the position of the first diversion trench is aligned with the position of the first glue-free area and forms a first diversion space together, and the position of the second diversion trench corresponds to the position of the second glue-free area and forms a second diversion space together; the second adhesive layer is arranged on the second hydrophilic layer, the second polymer layer is paved on the second adhesive layer, and the fluffy layer is arranged between the first polymer layer and the second polymer layer.

The utility model discloses a leak-proof panty-shape diapers core, first glueless region of first and second glueless region that is equipped with on its first adhesive linkage, form first guiding gutter and second guiding gutter after first macromolecular layer is fixed at first adhesive linkage, the position of first guiding gutter aligns and forms first water conservancy diversion space jointly with the position of first glueless region, the position of second guiding gutter aligns and forms second water conservancy diversion space jointly with the position of second glueless region, first water conservancy diversion space and second water conservancy diversion space have improved the water conservancy diversion effect of core on the one hand, on the other hand makes the core present the U type when wearing, and then obtain good side leakage effect of preventing, it is fast to have the absorption, the advantage of side leakage is prevented.

Further, the width of the first guide groove and the width of the second guide groove are 15-25mm. The width of the second diversion trench is too small, so that the core body is not favorable for forming a u shape when being worn, and the absorption capacity of the core body is influenced when the width of the second diversion trench is too large.

Furthermore, the fluffy layer is provided with a first hot pressing groove and a second hot pressing groove, the first hot pressing groove and the second hot pressing groove are arranged along the long edge direction of the first hydrophilic layer, the position of the first hot pressing groove is aligned with the position of the first flow guide groove, and the position of the second hot pressing groove is aligned with the position of the second flow guide groove. The fluffy layer is a relatively thick structure in the core, the first hot pressing groove and the second hot pressing groove are arranged at the corresponding positions of the first diversion groove and the second diversion groove, so that the paper diaper tends to bend at the first hot pressing groove and the second hot pressing groove after being worn, namely the first diversion groove and the second diversion groove are bent, the core is favorably formed into a U-shaped structure when being worn, and the effect of preventing the core from side leakage is ensured.

Further, the width of the first hot pressing groove and the width of the second hot pressing groove are 15-25mm. The width of the second hot pressing groove is too small, so that the core body is not favorable for forming a u shape when being worn, and the width of the second hot pressing groove is too large, so that the core body is not favorable for embedding and fixing the expanded high polymer layer on the fluffy layer.

Furthermore, the first bonding layer is further provided with a plurality of miniature glue-free areas, the miniature glue-free areas are arranged in the first area, the second area and the third area, the miniature glue-free areas are arranged along the long edge direction of the first hydrophilic layer, the first polymer layer is fixed on the first bonding layer and forms a plurality of miniature flow guide grooves, and the positions of the miniature flow guide grooves are aligned with the positions of the miniature glue-free areas and form a plurality of miniature flow guide spaces together. Additionally, the width of the micro adhesive-free area is 3-5mm, the effect of fixing the first polymer layer is poor when the width is larger than 5mm, and the micro diversion trench is difficult to form after the first polymer layer with the width smaller than 3mm is fixed.

Further, the width of the first region and the width of the third region are both 1.1-1.5 times the width of the second region. The proportion is less than 1.1 times and then leads to the height that the core side stood up when wearing not enough, prevents that the edge leakage effect is not good, and the proportion is greater than 1.5 times and then leads to the whole too wide of core. Additionally, the width of the second region is 20-30mm, and the width of 20-30mm more conforms to the width of the crotch of a baby, making the core more comfortable when worn.

Further, the grammage of the polymer layer located in the first region and the grammage of the polymer layer located in the third region are both 1.1 to 1.5 times the grammage of the polymer layer located in the second region. The proportion is less than 1.1 times, which results in poor absorption effect of the core, and the proportion is more than 1.5 times, which results in overweight two sides of the core, uneven surface after liquid absorption, and influence comfort level of wearing.

Further, the lengths of the first diversion trench and the second diversion trench are as long as the length of the first hydrophilic layer; or the lengths of the first flow guide grooves and the second flow guide grooves account for 50-80% of the length of the first hydrophilic layer, and the first flow guide grooves and the second flow guide grooves are arranged in the length direction of the first hydrophilic layer in the center. The diversion trench accounts for 50-80% of the length of the first hydrophilic layer, and has good performance of preventing front and rear leakage on the premise of ensuring a certain diversion effect.

Further, the first region, the second region, and the third region are formed by a spiral-shaped rubber strip. The spiral glue spraying can make the fixation of the macromolecule layer more firm.

The utility model discloses still provide including the aforesaid arbitrary leak protection panty-shape diapers core's panty-shape diapers.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic cross-sectional view of a core of a leakproof diaper in accordance with example 1;

FIG. 2 is a schematic cross-sectional view in the width direction of a core of a leakproof diaper in accordance with example 2;

FIG. 3 is a schematic cross-sectional view in the width direction of a core of a leakproof diaper in accordance with example 3;

FIG. 4 is a bottom view of the first adhesive layer of the core of the leak-proof diaper of example 3.

Detailed Description

Example 1

This embodiment provides a leakproof diaper core, as shown in fig. 1, comprising a first hydrophilic layer 1, a first adhesive layer 2, a first polymer layer 3, a bulky layer 4, a second polymer layer 5, a second adhesive layer 6 and a second hydrophilic layer 7, which are arranged in this order. First macromolecule layer 3 is connected with first hydrophilic layer 1 through first adhesive linkage 2, and second macromolecule layer 5 is connected with hydrophilic layer 7 of second through second adhesive linkage 6, and fluffy layer 4 sets up between first macromolecule layer 3 and second macromolecule layer 5, plays the supporting role.

The first hydrophilic layer 1 is made of hydrophilic materials and is beneficial to liquid diffusion, and the hydrophilic materials can be made of dust-free paper, viscose spunlace cloth, spunlace wood pulp cloth and hydrophilic spunbonded cloth.

The first adhesive layer 2 is arranged on the first hydrophilic layer 1, the first adhesive layer 2 is provided with a first adhesive-free area 21 and a second adhesive-free area 22, the first adhesive-free area 21 and the second adhesive-free area 22 are arranged along the long side direction of the first hydrophilic layer 1, the width of the first adhesive-free area 21 and the width of the second adhesive-free area 22 are 15-25mm, the width is too small to form a u shape, and the absorption capacity of the core body is affected by too large width; the first adhesive layer 2 comprises a first area 23, a second area 24 and a third area 25, the second area 24 is positioned in the center of the first adhesive layer 2, the first area 23 and the third area 25 are respectively positioned on two sides of the second area 24, the first adhesive-free area 21 is arranged between the first area 23 and the second area 24, and the second adhesive-free area 22 is arranged between the second area 24 and the third area 25; wherein the width of the second area 24 is 20-30mm, the width of 20-30mm is more in line with the width of 30mm of crotch of infants, so that the core body is more comfortable when worn, the width of the first area 23 and the width of the third area 25 are both 1.1-1.5 times of the width of the second area 24, if the width is less than 1.1 time, the height of the first area 23 and the third area 25 which stand up is not enough, the side leakage prevention effect is poor, and if the width is more than 1.5 times, the whole core body is too wide, so that the wearing comfort is affected; in this embodiment, the specific structure of the first adhesive layer 2 is a spiral adhesive tape, which is realized by spirally spraying adhesive, and the spiral adhesive spraying can fix the first polymer layer 3 on the first adhesive layer 2 more firmly.

In this embodiment, the first polymer layer 3 is fixed on the first adhesive layer 2 and forms a first guiding groove 31 and a second guiding groove 32, the length of the first guiding groove 31 and the length of the second guiding groove 32 are the same as the length of the first hydrophilic layer 1, and the arrangement of the same length is favorable for improving the guiding performance, in other embodiments, the length of the first guiding groove 31 and the length of the second guiding groove 32 account for 50-80% of the length of the first hydrophilic layer 1, and the first guiding groove is arranged in the length direction of the first hydrophilic layer 1 in the center, and the arrangement can improve the effect of preventing the core body from leaking back and forth; the positions of the first guide grooves 31 are aligned with the positions of the first glue-free areas 21 and jointly form a first guide space 2301, and the positions of the second guide grooves 32 correspond to the positions of the second glue-free areas 22 and jointly form a second guide space 2302. The first polymer layer 3 is preferably made of a polymer material having good diffusion properties (liquid permeability >20 ml/min). The gram weight of the polymer material in the first region 23 and the gram weight of the polymer material in the third region 25 are both 1.1-1.5 times of the gram weight of the polymer material in the width of the second region 24. If less than 1.1 times, the absorption effect of the first region 23 and the third region 25 is poor, and if more than 1.5 times, the first region 23 and the third region 25 are too heavy, the surface is uneven after liquid absorption, and the wearing comfort is affected.

The second hydrophilic layer 7 is made of hydrophilic materials, and the hydrophilic materials can be made of dust-free paper, viscose spunlace cloth, spunlace wood pulp cloth and hydrophilic spunbonded cloth.

The second adhesive layer 6 is uniformly arranged on the second hydrophilic layer 7, and fiber spray glue or spiral spray glue can be adopted.

The second polymer layer 5 is uniformly laid on the second adhesive layer 6. The second polymer layer 5 is preferably made of a polymer material having a good water retention capacity (water retention rate of 34 times or more).

The bulky layer 4 is provided between the first polymer layer 3 and the second polymer layer 5. In this embodiment, fluffy layer 4 adopts fluffy cotton, and its mainly used fixes macromolecular material, makes the product not faulted and does not rise the lump.

According to the leakproof diaper core body, under the action of the first diversion space 2301 and the second diversion space 2302, on one hand, the diffusion capacity and the absorption rate of the core body are obviously improved, on the other hand, the core layer after being worn presents an obvious U-shaped structure with the first area 23 and the third area 25 standing up and the second area 24 flatly laying in the middle, and as the first area 23 and the third area 25 stand up at two sides, the core body capable of presenting the U-shaped structure can meet the liquid storage requirement of the core body when the urine volume is large, so that the core body has good side leakage prevention performance, and due to the specific width design of the first area 23, the second area 24 and the third area 25, the U-shaped structure of the core body also has good wearing comfort; in addition, as the diversion trench is not reserved in the second polymer layer 5, the core body also has better performance of preventing front and back leakage.

Example 2

This embodiment provides a leakproof diaper core, which has a structure similar to that of embodiment 1, and is not described in detail herein. The present example differs from example 1 in the structure of the bulky layer 4.

Fig. 2 is a schematic structural view of a leakproof diaper core of this embodiment. In this embodiment, the bulky layer 4 is provided with a first hot pressing groove 41 and a second hot pressing groove 42, the first hot pressing groove 41 and the second hot pressing groove 42 are arranged along the long side direction of the first hydrophilic layer 1, the position of the first hot pressing groove 41 corresponds to the position of the first flow guide groove 31, and the position of the second hot pressing groove 42 corresponds to the position of the second flow guide groove 32. The widths of the first hot-pressing groove 41 and the second hot-pressing groove 42 are 15-25mm, and if the widths are smaller than 15mm, the core body is not favorable to form a U-shaped structure in use, and if the widths are larger than 25mm, the core body is not favorable to be embedded and fixed after the polymer is expanded. Because the fluffy layer 4 is a relatively thick structure in the core body, the first hot pressing groove 41 and the second hot pressing groove 42 are arranged, so that the paper diaper tends to bend at the first hot pressing groove 41 and the second hot pressing groove 42 after being worn, a U-shaped structure is formed, and the effect of preventing the core body from side leakage is ensured. In this embodiment, the first hot-pressing groove 41 and the second hot-pressing groove 42 are obtained by hot-pressing at corresponding positions on the bulky layer 4.

Example 3

This embodiment provides a leakproof diaper core, which has a structure similar to that of embodiment 2, and is not described in detail in this embodiment. This embodiment is different from embodiment 2 in the structure of the first adhesive layer 2 and the first polymer layer 3.

Fig. 3 is a schematic structural view of a leakproof diaper core of the present embodiment, and fig. 4 is a bottom view of the first adhesive layer 2 in the leakproof diaper core shown in fig. 3. In this embodiment, first adhesive linkage still is equipped with a plurality of miniature no gluey regional 26, a plurality of miniature no gluey regional 26 sets up at first region 23, in second region 24 and the third region 25, a plurality of miniature no gluey regional 26 set up along the long edge direction of first hydrophilic layer 1, first macromolecule layer 3 is fixed on first adhesive linkage 2 and is formed a plurality of miniature guiding gutters 33, a plurality of miniature guiding gutters 33's position aligns and forms a plurality of miniature water conservancy diversion spaces 2303 jointly with a plurality of miniature no gluey regional 26's position, a plurality of miniature water conservancy diversion spaces 2303 mainly play the water conservancy diversion effect, can accelerate the absorption rate of core. The width of the plurality of micro adhesive-free regions 26 is 3-5mm, the effect of fixing the first polymer layer 3 is poor if the width is greater than 5mm, and the micro flow guide grooves 33 are difficult to form after the first polymer layer 3 with the width less than 3mm is fixed.

The absorption rate and the diffusion rate of core can further be promoted to above-mentioned setting, avoid the urine to lead to the edge leakage or leak around because of absorbing too slowly.

Example 4

A pant diaper comprising a leakproof pant core as claimed in any of embodiments 1 to 3.

The above embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, to those skilled in the art, changes and modifications may be made without departing from the spirit of the invention, and it is intended that the invention also encompass such changes and modifications.

Claims (10)

1. A leakproof diaper core body is characterized by comprising a first hydrophilic layer, a first adhesive layer, a first macromolecular layer, a fluffy layer, a second macromolecular layer, a second adhesive layer and a second hydrophilic layer which are sequentially arranged; the first adhesive layer is arranged on the first hydrophilic layer and provided with a first glue-free area and a second glue-free area, and the first glue-free area and the second glue-free area are arranged along the long edge direction of the first hydrophilic layer; the first bonding layer comprises a first area, a second area and a third area, the second area is located in the center of the first bonding layer, the first area and the third area are respectively located on two sides of the second area, the first glue-free area is arranged between the first area and the second area, and the second glue-free area is arranged between the second area and the third area; the first polymer layer is fixed on the first bonding layer and forms a first diversion trench and a second diversion trench, the position of the first diversion trench is aligned with the position of the first glue-free area and forms a first diversion space together, and the position of the second diversion trench is aligned with the position of the second glue-free area and forms a second diversion space together; the second adhesive layer is arranged on the second hydrophilic layer, the second polymer layer is paved on the second adhesive layer, and the fluffy layer is arranged between the first polymer layer and the second polymer layer.

2. The leak-proof diaper core according to claim 1, wherein the width of the first diversion space and the second diversion space is 15-25mm.

3. The leak-proof diaper core body according to claim 1, wherein the fluffy layer is provided with a first hot pressing groove and a second hot pressing groove, the first hot pressing groove and the second hot pressing groove are arranged along the long side direction of the first hydrophilic layer, the first hot pressing groove is aligned with the first flow guide groove, and the second hot pressing groove is aligned with the second flow guide groove.

4. The leak-proof diaper core according to claim 3, wherein the width of the first hot-pressing groove and the width of the second hot-pressing groove are 15-25mm.

5. The leak-proof diaper core according to claim 1, wherein the first adhesive layer further comprises a plurality of micro adhesive-free regions, the micro adhesive-free regions are disposed in the first region, the second region and the third region, the micro adhesive-free regions are disposed along a long side direction of the first hydrophilic layer, the first polymer layer is fixed on the first adhesive layer and forms a plurality of micro diversion grooves, and the micro diversion grooves are aligned with the micro adhesive-free regions and form a plurality of micro diversion spaces.

6. The leak resistant diaper core of claim 1, wherein the width of said first region and the width of said third region are each 1.1 to 1.5 times the width of said second region.

7. The leakproof diaper core according to claim 1, wherein the grammage of the polymer layer in the first region and the grammage of the polymer layer in the third region are each 1.1 to 1.5 times the grammage of the polymer layer in the second region.

8. The leak-proof diaper core according to claim 1, wherein the first and second flow guide grooves have the same length as the first hydrophilic layer; or the lengths of the first guide groove and the second guide groove account for 50-80% of the length of the first hydrophilic layer, and the first guide groove and the second guide groove are arranged in the length direction of the first hydrophilic layer in the middle.

9. The leak resistant diaper core of claim 1, wherein said first region, said second region and said third region are comprised of a helical strip of tape.

10. A diaper comprising the leakproof diaper core as claimed in any one of claims 1 to 9.

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