CN215192995U

CN215192995U - Novel absorption core

Info

Publication number: CN215192995U
Application number: CN202121208251.0U
Authority: CN
Inventors: 王军华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-12-17
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a novel absorption core, which comprises a core structure, wherein the core structure comprises a surface layer, a second absorption layer, a first absorption layer and a bottom layer from top to bottom in sequence, the first absorption layer is provided with a diversion channel and a ventilation channel group of a hollow structure, and the diversion channel and the ventilation channel group are not communicated with each other; the setting of water conservancy diversion passageway and air permeable channel group can reach the quick absorption, the effect of even diffusion, and owing to be the hollow structure, ventilation effect is also better, this technical scheme unique adoption possesses water conservancy diversion passageway, air permeable channel's range upon range of formula structure absorption core, obtains multilayer structure's absorption core to it is inhomogeneous to solve baby's disposable hygienic articles absorption core, the core utilization ratio is low, easy vexed in the use, the not enough problem of gas permeability, reach quick absorption, even diffusion, high-efficient ventilative, reduce the effect of louing.

Description

Novel absorption core

Technical Field

The patent of the utility model relates to a disposable hygienic articles technical field, especially a novel core structure for baby diaper.

Background

With the development of society, the absorbent products for baby excreta are more and more diversified and more convenient to use, and for example, the disposable diaper, pull-up diaper, etc. commonly used at present are popular among baby caregivers because of their disposable characteristics. These excrement absorption products mainly rely on its inside absorption core to absorb the moisture in urine and the excrement liquid, have the diffusion barrier that can conduct the urine rapidly in absorbing the core, have moreover and can strengthen the absorption core, simultaneously have the water conservancy diversion passageway of quick imbibition, quick diffusion, in addition, still have the ventilation channel that enables urine to ooze down fast, get rid of the moisture fast.

The disposable sanitary article of baby on the existing market absorbs the core and mainly has two kinds of structures, the first is pure wood pulp core, the main material is wood pulp fiber + super absorbent resin, its production technology is to put into the mixing box wood pulp short-staple, super absorbent resin simultaneously, absorb into the absorption core of 2-3mm thickness through the negative pressure, the shortcoming of this kind of absorption core is that wood pulp material is mostly the short fiber, the core structure is firm inadequately, SAP absorbs the urine after-expansion, the core fault appears and rises the phenomenon of sticking together. The second type is a composite core body, the structure is mainly a 5-layer structure, the first layer is dust-free paper, the second layer is SAP absorbing material, the third layer is fluffy hot air non-woven fabric, the fourth layer is SAP absorbing material, the fifth layer is dust-free paper, and all the layers of materials are bonded by hot melt adhesive. The raw materials of the middle fluffy non-woven fabric are ES fibers and polyester fibers generally, the ES fibers are usually subjected to hydrophilic oiling agent spraying treatment to obtain hydrophilicity, and the polyester fibers are not treated generally, so that the original characteristic of slightly water repellency is maintained. The raw materials of the two fibers are chemical fibers, and after the infant excrement permeates into the middle layer, the fibers only have the function of penetrating liquid and do not have the functions of absorbing liquid and conducting liquid, so that the uniformity and the diffusion performance of the absorbent core are influenced. On the other hand, the hydrophilic oil agent type of the ES fiber is mostly a single hydrophilic oil agent type, after the ES fiber is washed by liquid, the oil agent can be washed away, and the hydrophilic performance of the ES fiber is attenuated for the second time and the third time, so that the multiple absorption performance of the absorption core body with the structure is influenced. And like the technical scheme that CN209220714U discloses, the both length limits of its bottom non-woven fabrics and upper non-woven fabrics all are provided with first heat-seal strip, set up two recesses on the absorber at least, it is provided with the second heat-seal strip to lie in the groove on bottom non-woven fabrics and the upper non-woven fabrics, the fluffy sense of absorbing the core has been lost in the setting of heat-seal strip on the one hand, and on the other hand secondary operation makes and feels stiff, has brought bigger problem for the product again, and the phenomenon is worn to the pressure appears easily in the position of hot pressing moreover, leads to the material damage, influences product overall structure. The groove formed by hot rolling in the technical scheme disclosed in CN209220714U can only increase the diversion function of part of the absorption core, and can not solve the problem of stuffy and damp pain points of wearing products, and becomes stiff in the using process, the core expands after absorbing urine, the function of the diversion groove is lost, and the risk of urine leakage of the diversion groove exists, and the hot-rolled groove has higher material density, the urine discharge is blocked, and the stuffy risk is increased.

Therefore, how to design a novel absorption core body to ensure that the absorption core body can be quickly and uniformly absorbed in the using process is a technical problem which needs to be solved by technical personnel in the field, and the defects of high core body utilization rate, low stuffiness and insufficient air permeability are overcome.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims at providing a novel absorb core, mainly used baby's disposable hygienic products, like baby diaper, pull-up diaper, disposable diaper etc.. This novel core possesses water conservancy diversion passageway and ventilative passageway complex structure, combines material composite technology, has realized absorbing the even, the high optimization of utilization ratio of core use, and has solved sultry, airtight, leak the frequent problem of urine.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a novel absorb core, includes the core structure, its core structure is from last to being surface course, second absorbed layer, first absorbed layer, bottom down in proper order, its characterized in that: and the first absorption layer is provided with a flow guide channel with a hollow structure.

Furthermore, the surface layer, the first absorption layer and the bottom layer are sequentially bonded from top to bottom through hot melt pressure sensitive adhesive.

Furthermore, a hollow-core structure type ventilation channel group which is not communicated with the flow guide channel is also arranged on the first absorption layer. The arrangement of the diversion channel and the ventilation channel group can achieve the effects of quick absorption and uniform diffusion, and the ventilation effect is better due to the hollow structure.

Preferably, the absorbent article further includes a second absorbent layer located above and/or below the first absorbent layer.

Preferably, the absorbent article further comprises a second absorption layer which is formed by sequentially bonding the surface layer, the first absorption layer and the bottom layer from top to bottom through hot melt pressure sensitive adhesive and is positioned on the upper side and/or the lower side of the first absorption layer. Prevent the risk of stiffness, breakage and urine leakage caused by hot pressing.

Further preferably, ventilative passageway group is including being located the first exhaust passage group on water conservancy diversion passageway upper portion, the second exhaust passage group that is located water conservancy diversion passageway lower part, first exhaust passage group level second exhaust passage group comprises a plurality of exhaust holes, sets up exhaust passage in the upper and lower part of water conservancy diversion passageway, can cooperate the front and back of water conservancy diversion passageway, improves ventilative effect, has also improved the effect of water conservancy diversion, even diffusion.

Further preferably, the number of exhaust holes in the second exhaust passage group is larger than the number of exhaust holes in the first exhaust passage group. First exhaust passage group comprises a plurality of exhaust holes of horizontal equipartition, second exhaust passage group comprises a plurality of exhaust holes of horizontal, vertical equipartition, and this design has combined the condition of use scene, and when owing to concrete use, second exhaust passage is close to buttock one side, and first exhaust passage is close to body front side, and general second exhaust passage group is higher than first exhaust passage group to diffusion effect, ventilation effect's requirement, so with the structural design of second exhaust passage group more than the structure of first exhaust passage group, increase ventilative, the effect of even diffusion.

Preferably, the second exhaust channel group comprises a first exhaust hole group, a second exhaust hole group and a third exhaust hole group which are longitudinally and uniformly distributed, the first exhaust hole group, the second exhaust hole group and the third exhaust hole group are all composed of a plurality of exhaust holes which are transversely and uniformly distributed, and the number of the exhaust holes of the first exhaust hole group and the third exhaust hole group is larger than that of the exhaust holes of the second exhaust hole group.

Further preferably, the diversion channel is arranged at the crotch position of the first absorption layer after being worn by the baby, the number of the diversion channels is at least one, the diversion channel is in one of a vertical strip shape, a V-shaped shape and a wave shape, the diversion channel is mainly used for conducting diversion on the urine discharged in a centralized mode, the diversion effect of the vertical strip shape, the V-shaped shape and the wave shape is good, and other diversion shapes can be designed.

Further preferably, the surface layer is a non-woven fabric, specifically one of a hot-air fabric, a spun-bonded fabric and a spunlace fabric.

Further preferably, the second absorbent layer is a composite absorbent layer, and the first absorbent layer is a mixed layer of wood pulp and SAP.

Further preferably, the bottom layer is made of a waterproof breathable film.

Further, the second absorbent layer is at least one absorbent layer, and at least one absorbent layer includes an SAP layer.

If the absorption layer is a three-layer composite absorption layer, the absorption layer is formed by compounding a water-absorbing paper material or non-woven fabric material layer and an SAP layer sandwiched between the water-absorbing paper material or non-woven fabric material layer.

If the absorption layer is a five-layer composite absorption layer, the absorption layer is formed by sequentially compounding a water-absorbing paper material or non-woven fabric material layer, an SAP layer, a water-absorbing paper material or non-woven fabric material layer, an SAP layer and a water-absorbing paper material or non-woven fabric material layer from top to bottom.

Compared with the prior art, the utility model provides a novel core structure is distinctive, the water conservancy diversion passageway and the exhaust passage of the hollow structure of the unique design of this technical scheme, the planning design has also been done to relative position, makes exhaust passage be located the upper and lower part of water conservancy diversion passageway, and the two is not cross-linked, and mutually independent has guaranteed water conservancy diversion and exhaust, and combines urine central zone and to ventilative demand region, the exhaust passage of design is many after less before the water conservancy diversion passageway, and structural design is more reasonable, the performance is better. The core structure of the utility model has the advantages of rapid absorption, uniform diffusion, strong ventilation, multilayer structure design, and can keep the structural stability of the product in the urine absorption process, and the multilayer structure absorption core body with the diversion channel and the ventilation channel is uniquely adopted to obtain the absorption core body with the multilayer structure, thereby solving the problems of uneven absorption core body, low core body utilization rate, frequent urine leakage, easy stuffiness in the use process and insufficient ventilation of the disposable sanitary product for babies, and achieving the effects of rapid absorption, uniform diffusion and high-efficiency ventilation; and the diversion channel and the ventilation channel are hollow permanent shaping structures, and the structures still exist and are effective after absorbing multiple times of urine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the layer structure of the first absorbent layer in the novel absorbent core;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 2 and 3, a novel absorption core comprises a core structure 3, wherein the core structure 3 comprises a surface layer 7, a second absorption layer 8, a first absorption layer 11 and a bottom layer 12 from top to bottom, the four layers form an integral core structure 3, a flow guide channel 2 and an air permeable channel group with a hollow structure are arranged on the first absorption layer 11, and the flow guide channel 2 and the air permeable channel group are not communicated with each other; the second absorbent layer 8 is a preferable embodiment, and the absorbent core of the present embodiment may be composed of only the top sheet 7, the first absorbent layer 11, and the back sheet 12 without including the second absorbent layer 8. The air-permeable passage group is also a preferable technical solution, and this embodiment may not include the air-permeable passage group. The second absorbent layer 8 is located on the upper side and/or the lower side of the first absorbent layer 11. Or the second absorption layer 8, the surface layer 7, the first absorption layer 11 and the bottom layer 12 are bonded in sequence from top to bottom through hot melt pressure sensitive adhesive and are positioned on the upper side and/or the lower side of the first absorption layer 11.

As a preferred scheme of this embodiment, in order to overcome the disadvantages of the conventional thermal compression, such as being hard and easy to crack, the surface layer 7, the second absorption layer 8, the first absorption layer 11, and the bottom layer 12 are preferably formed by sequentially adhering from top to bottom through hot-melt pressure-sensitive adhesive, or the surface layer 7, the first absorption layer 11, and the bottom layer 12 are preferably formed by sequentially adhering from top to bottom through hot-melt pressure-sensitive adhesive, so that the design can prevent cracking and reduce the hardness, and because the flow guide channel 2 and the air permeable channel group are both hollow structures, there is no surface thermal compression, and the use is more comfortable.

Regarding the flow guide channels 2 and the air permeable channel groups in this embodiment, as a key point of the present technical solution, specifically, when the absorbent core is prepared, only the flow guide channels 2 may be provided, or the flow guide channels 2 and the air permeable channel groups may be provided, and the flow guide channels 2 and the air permeable channel groups are not communicated or are communicated, and a detailed solution of further optimization is as follows: the ventilation channel group comprises a first exhaust channel group 1 positioned on the upper part of the guide channel 2 and a second exhaust channel group positioned on the lower part of the guide channel 2, and the 1-stage second exhaust channel group of the first exhaust channel group consists of a plurality of exhaust holes. This design has combined the condition of usage scenario, when specifically using, second exhaust passage group is close to buttock one side, first exhaust passage group 1 is close to the body front side, general second exhaust passage group is to diffusion effect, the requirement of ventilation effect is higher than first exhaust passage group 1, so with the structural design of second exhaust passage group more than the structure of first exhaust passage group 1, increase ventilative, the effect of even diffusion, the quantity of exhaust hole is greater than the quantity in first exhaust passage group 1 in the preferred second exhaust passage group, as shown in figure 1, first exhaust passage group 1 comprises a plurality of exhaust holes of horizontal equipartition, second exhaust passage group comprises a plurality of exhaust holes of horizontal, vertical equipartition. The second exhaust passage group comprises a first exhaust hole group 4, a second exhaust hole group 5 and a third exhaust hole group 6 which are longitudinally and uniformly distributed, wherein the first exhaust hole group 4, the second exhaust hole group 5 and the third exhaust hole group 6 are formed by a plurality of exhaust holes which are transversely and uniformly distributed, and the exhaust hole quantity of the first exhaust hole group 4 and the exhaust hole quantity of the third exhaust hole group 6 are greater than that of the second exhaust hole group 5. As in the drawing, the upper portion is designed with 3 rows of exhaust holes, the lower portion is designed with 3 rows of 8 exhaust holes, all the exhaust holes are circular, the diameter range is 1-3mm, certainly, the embodiment is not limited to circular, but also can be other oval, irregular pattern or other geometric figures, moreover, the embodiment is not limited to the layout form of one row of the upper portion and three rows of the lower portion, all the exhaust hole structures with hollow cores are designed, the exhaust effect can be realized through simple deformation of the scheme, the scheme is within the technical range which is substantially the same, and the embodiment is not described in an extension manner.

Regarding the flow guide channels 2 in this embodiment, the flow guide channels 2 are disposed at least one in number at the crotch position of the first absorbent layer 11 after wearing the baby, and have one of a vertical strip shape, a V-shape and a wave shape, as shown in fig. 1, two vertical flow guide channels are arranged in the center of the left and right, and preferably have a length of 10-30mm and a width of 2-5 mm.

Regarding other parameters of the present embodiment, the surface layer 7 is preferably a non-woven fabric, specifically one of a hot-air fabric, a spun-bonded fabric and a spunlace fabric, and has a gram weight range of 15-50g, which can be used for flat fabric or three-dimensional shaping effect. The second absorption layer 8 is a composite absorption layer which is a conventional composite layer, has the gram weight range of 120-500gsm, and has the main function of locking urine and keeping the structure of the absorption layer stable and not loose; the first absorption layer 11 is made of wood pulp and an SAP mixing layer and mainly has the functions of quickly absorbing urine and vertically conducting along the flow guide channel 2, and meanwhile, moisture can be accelerated to be released from a bottom layer material through the ventilation channel; the bottom layer 12 is made of a waterproof breathable film. As the present embodiment, the second absorption layer 8 is at least one absorption layer, and at least one absorption layer includes an SAP layer, and if the absorption layer is a three-layer composite absorption layer, the second absorption layer is formed by combining a water-absorbent paper material or nonwoven fabric material layer and an SAP layer sandwiched between the water-absorbent paper material or nonwoven fabric material layer.

Or, in order to further improve the advantages of the second absorption layer 8, the absorption layer 8 is a five-layer composite absorption layer, which is formed by combining a water-absorbent paper material or non-woven material layer, an SAP layer, a water-absorbent paper material or non-woven material layer, and a water-absorbent paper material or non-woven material layer in sequence from top to bottom.

When urine is produced, the surface layer 7 firstly contacts liquid and quickly penetrates to the second absorption layer 8 and the first absorption layer 11, and SAP (super absorbent polymer) expansion can occur after the second absorption layer 8 absorbs the urine, so that the function of locking the urine can be achieved; when the urine is too much, the second absorption layer 8 can not absorb the urine in time, and the urine can be conducted to the first absorption layer 11 rapidly, and is diffused to the front end and the rear end rapidly and uniformly along the diversion channel 2, so that the utilization rate of the whole second absorption layer 8 and the first absorption layer 11 is increased, and the effects of rapidly and uniformly absorbing and reducing urine leakage are achieved. After absorbing liquid, the air permeable channels in the first absorption layer 11 are still existed, so that the stuffy moisture space can directly penetrate the bottom layer, the air permeable efficiency is increased, and the probability of eczema and red buttocks is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a novel absorb core, includes core structure (3), and its core structure (3) are surface course (7), first absorption layer (11), bottom (12) from last to being down in proper order, its characterized in that: the air guide structure is characterized in that a flow guide channel (2) of a hollow structure is arranged on the first absorption layer (11), a hollow structure type air permeable channel group which is not communicated with the flow guide channel (2) is further arranged on the first absorption layer (11), the air permeable channel group comprises a first exhaust channel group (1) located on the upper portion of the flow guide channel (2) and a second exhaust channel group located on the lower portion of the flow guide channel (2).

2. A novel absorbent core according to claim 1, characterized in that said top sheet (7), first absorbent sheet (11) and back sheet (12) are bonded in sequence from top to bottom by means of hot melt pressure sensitive adhesive.

3. A novel absorbent core according to claim 1, further comprising a second absorbent layer (8) on the upper side and/or lower side of the first absorbent layer (11).

4. The novel absorbent core according to claim 2, further comprising a second absorbent layer (8) bonded with the surface layer (7), the first absorbent layer (11) and the bottom layer (12) in sequence from top to bottom through hot melt pressure sensitive adhesive and located on the upper side and/or the lower side of the first absorbent layer (11).

5. A novel absorbent core according to claim 1, wherein: the first exhaust channel group (1) and the second exhaust channel group are both composed of a plurality of exhaust holes.

6. A novel absorbent core according to claim 5, wherein: the number of exhaust holes in the second exhaust passage group is greater than that in the first exhaust passage group (1).

7. A novel absorbent core according to claim 5 or 6, characterized in that: first exhaust passage group (1) comprises a plurality of exhaust holes of horizontal equipartition, second exhaust passage group comprises a plurality of exhaust holes of horizontal, vertical equipartition.

8. A novel absorbent core according to claim 5, wherein: the second exhaust channel group comprises a first exhaust hole group (4), a second exhaust hole group (5) and a third exhaust hole group (6) which are longitudinally and uniformly distributed, wherein the first exhaust hole group (4), the second exhaust hole group (5) and the third exhaust hole group (6) are formed by a plurality of exhaust holes which are transversely and uniformly distributed, and the number of the exhaust holes of the first exhaust hole group (4) and the third exhaust hole group (6) is greater than that of the exhaust holes of the second exhaust hole group (5).

9. A novel absorbent core according to claim 1, wherein: the flow guide channels (2) are arranged at the crotch position of the first absorption layer (11) after being worn by a baby, the number of the flow guide channels is at least one, and the flow guide channels are in one of a vertical strip shape, a V-shaped shape and a wavy shape.

10. A novel absorbent core according to claim 1, wherein: the surface layer (7) is non-woven fabric, in particular to one of hot-air cloth, spun-bonded cloth and spunlace cloth.

11. A novel absorbent core according to claim 3, wherein: the second absorption layer (8) is a composite absorption layer, and the first absorption layer (11) is a wood pulp and SAP mixed layer.

12. A novel absorbent core according to claim 1, wherein: the bottom layer (12) is made of a waterproof breathable film.

13. A novel absorbent core according to claim 3, wherein: the second absorbent layer (8) is at least one absorbent layer, and at least one absorbent layer comprises an SAP layer.

14. A novel absorbent core according to claim 13, wherein: the absorption layer (8) is a three-layer composite absorption layer and is formed by compounding a water-absorbing paper material layer or a non-woven fabric material layer and an SAP layer sandwiched between the water-absorbing paper material layer or the non-woven fabric material layer.

15. A novel absorbent core according to claim 13, wherein: the absorption layer (8) is a five-layer composite absorption layer, and is formed by compounding a water-absorbing paper material or non-woven fabric material layer, an SAP layer, a water-absorbing paper material or non-woven fabric material layer, an SAP layer and a water-absorbing paper material or non-woven fabric material layer from top to bottom in sequence.