CN117243759A

CN117243759A - Liquid collecting absorption structure and sanitary article

Info

Publication number: CN117243759A
Application number: CN202311515494.2A
Authority: CN
Inventors: 邹超; 周彧峰; 陈秋秋; 崔翠翠
Original assignee: Lule Health Technology Co Ltd
Current assignee: Lule Health Technology Co Ltd
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2023-12-19
Anticipated expiration: 2043-11-15
Also published as: CN117243759B

Abstract

The invention relates to the field of absorbing sanitary articles, in particular to an absorbing structure for collecting liquid and a sanitary article. An absorbent structure comprising: a hydrophilic surface layer and a detachable bottom layer; a supporting absorption core is arranged between the hydrophilic surface layer and the easily separable bottom layer; a secondary absorption layer is arranged between the supporting absorption core and the easily-separable bottom layer; a plurality of diversion protrusions are arranged on the surface of the hydrophilic surface layer; the supporting absorption core is provided with a plurality of liquid collecting structures, and the liquid collecting structures are matched with the positions of the diversion protrusions; the liquid collecting structure is mutually independent in the supporting absorption core, one end of the liquid collecting structure is connected with the hydrophilic surface layer, and the other end of the liquid collecting structure is connected with the secondary absorption layer and is communicated with the hydrophilic surface layer and the secondary absorption layer. The hydrophilic surface layer capable of rapidly absorbing and transferring liquid is matched with the liquid dispersion and effective support of the diversion protrusions, and dryness of the outermost layer is effectively maintained. The liquid collecting structure of the supporting absorption core is arranged, so that a high-speed liquid guide channel among the hydrophilic surface layer, the supporting absorption core and the secondary absorption layer is formed, and an effective storage space of free liquid is also formed.

Description

Liquid collecting absorption structure and sanitary article

Technical Field

The present invention relates to the field of absorbent hygiene articles, and more particularly to an absorbent structure for collecting liquids and a hygiene article.

Background

In the existing medical detection means, urine detection has important value for diagnosis of clinical diseases, body medicine residues and the like. Urine testing is more friendly to the human body than blood testing, and sampling does not cause additional injury or pain, thus being a very important diagnostic means for infants. However, infant's cerebral nerves and urination centers develop incompletely, resulting in obvious uncontrollable urination. Therefore, when the urine of the infant is detected, how to effectively collect the pure urine sample is one of the difficulties of the urine detection of the infant.

In order to solve the problem of urine sample collection of infants, one of the directions of the prior art is to solve the problem of uncontrollable urine collection of urination through the technical improvement of paper diapers. However, the existing paper diapers basically adopt high-molecular water-absorbent resin to absorb urine. When urine is absorbed by the polymer absorbent resin, it is difficult to perform effective separation. Even if the separation in technology is realized, the cost and time for acquiring the urine sample are greatly increased, and the problem that urine changes in the process of extraction can also exist. Therefore, a new design is needed in the prior art to meet the requirement of effectively collecting urine from sanitary articles such as paper diapers and the like and solve the problem of rapid separation of the collected urine.

Disclosure of Invention

The present invention is directed to overcoming at least one of the above-mentioned drawbacks of the prior art and providing an absorbent structure for collecting liquid and a sanitary article for solving the problem of how to enable a sanitary article to be quickly and effectively separated after absorbing liquid.

The invention adopts the technical scheme that the liquid collecting absorption structure comprises: a hydrophilic surface layer, an easily separable bottom layer, a supporting absorbent core and a secondary absorbent layer; the supporting absorbent core is arranged between the hydrophilic surface layer and the easily separable bottom layer, and the secondary absorbent layer is arranged between the supporting absorbent core and the easily separable bottom layer; the surface of the hydrophilic surface layer is provided with a plurality of diversion protrusions; the supporting absorption core is provided with a plurality of liquid collecting structures, and the liquid collecting structures are matched with the position of the diversion protrusions; each liquid collecting structure is mutually independent in the supporting absorption core, one end of the liquid collecting structure is connected with the hydrophilic surface layer, and the other end of the liquid collecting structure is connected with the secondary absorption layer and is communicated with the hydrophilic surface layer and the secondary absorption layer.

The diversion protrusions are formed by deformation of the hydrophilic surface layer, and at least the tops of the diversion protrusions are provided with a hydrophobic coating.

The diverting protrusions are made of hydrophobic materials and are attached to the surface of the hydrophilic surface layer.

The absorbent structure further comprises: the distribution bulge and the liquid collecting structure are arranged in the central collecting area; the central acquisition area comprises a plurality of split shielding areas, the split shielding areas are arranged in an array in the central acquisition area, and a space is reserved between every two adjacent split shielding areas.

The supporting absorbent core comprises: a hollow yarn housing, a support wire and a filler water absorbing particle disposed within the yarn housing, and a tubular partition wall; the tubular partition wall forms a liquid collecting structure penetrating through two sides of the supporting absorption core in the supporting absorption core, and the supporting wires and the filling water absorbing particles are arranged to avoid the liquid collecting structure.

The upper opening of the tubular partition wall is blocked by the corresponding diversion protrusion, and the lower opening of the tubular partition wall is connected with the secondary absorption layer;

at least the inner side of the tubular partition wall is made of hydrophobic material, and/or at least the inner side of the tubular partition wall is coated with hydrophobic paint.

One end of the supporting wire is connected with the surface of the yarn shell, and the other end of the supporting wire is connected with the bottom surface of the yarn shell; the support wire is spiral when relaxed.

The axis of the supporting wire is perpendicular to the hydrophilic surface layer and densely distributed in the yarn shell; the adjacent supporting wires are staggered, and the filling water absorbing particles are filled between the supporting wires.

The liquid collecting structure is internally provided with a water locking piece which is movably arranged.

Further, there is provided a disposable hygienic device comprising: the liquid-collecting absorbent structure.

Compared with the prior art, the invention has the beneficial effects that: the hydrophilic surface layer capable of rapidly absorbing and transferring liquid is matched with the liquid dispersion and effective support of the diversion protrusions, and dry touch feeling of the outermost layer can be effectively maintained. The liquid collecting structure of the supporting absorption core is arranged, so that a high-speed liquid guide channel among the hydrophilic surface layer, the supporting absorption core and the secondary absorption layer is formed, and an effective storage space of free liquid is also formed. The liquid collecting structure is matched with the split-flow protrusions, so that the effect of reducing external extrusion to act on the liquid collecting structure and guaranteeing the liquid collecting effect is achieved while reverse osmosis of liquid is effectively prevented. The absorption structure not only satisfies the effective collection of free liquid, but also can be quickly separated, and further solves the problem of reverse osmosis possibly caused by the storage of the free liquid in the absorption structure.

Drawings

FIG. 1 is a cross-sectional view of an absorbent structure according to the present invention.

Fig. 2 is a cross-sectional view of an absorbent structure according to the present invention.

Fig. 3 is an exploded view of an absorbent structure in accordance with the present invention.

Figure 4 is an enlarged view of a portion of a supporting absorbent core in accordance with the present invention.

Figure 5 is a top view of a supporting absorbent core in accordance with the present invention.

Figure 6 is a top view of a second embodiment of a supporting absorbent core of the present invention.

Fig. 7 is a schematic view of a disposable hygienic device of the present invention.

FIG. 8 is a second schematic view of the disposable hygienic device of the present invention.

Reference numerals illustrate: the absorbent structure 001, the central acquisition region 010, the peripheral absorbent region 020, the shunt shielding region 030, the hydrophilic surface layer 100, the shunt protrusions 110, the hydrophobic coating 120, the easy-to-separate bottom layer 200, the supporting absorbent core 300, the liquid collecting structure 310, the tubular partition 311, the water locking member 312, the yarn housing 320, the supporting filaments 321, the water absorbing particles 322 and the secondary absorbent layer 400.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the invention. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1 and 3, this embodiment is an absorbent structure 001 for collecting liquid, comprising: a hydrophilic top sheet 100, a releasable bottom sheet 200, a supporting absorbent core 300, and a secondary absorbent layer 400. The supporting absorbent core 300 is disposed between the hydrophilic top sheet 100 and the releasable bottom sheet 200. The secondary absorbent layer 400 is disposed between the supporting absorbent core 300 and the releasable backsheet 200. The hydrophilic surface layer 100 is provided on its surface with a plurality of diverting protrusions 110. The supporting absorbent core 300 is provided with a plurality of liquid collecting structures 310, and the liquid collecting structures 310 are matched with the positions of the flow dividing protrusions 110; each of the liquid collecting structures 310 is independent of each other in the supporting absorbent core 300. One end of each liquid collecting structure 310 is respectively connected with the hydrophilic surface layer 100, and the other end is respectively connected with the secondary absorption layer 400, and is communicated with the hydrophilic surface layer 100 and the secondary absorption layer 400.

Hydrophilic skin 100 is used to first contact and transport a liquid. The shunt protrusions 110 serve to form multi-point supports protruding from the hydrophilic skin 100, reducing the overall contact of the hydrophilic skin 100 with the contact surface. The matching of the position of the diverting protrusions 110 with the liquid collecting structure 310 serves to increase the distance between the surface of the absorbent structure 001 and the liquid collecting structure 310. The frangible base layer 200 is used to form a liquid impermeable base layer and the liquid stored in the liquid collecting structure 310 can be discharged by separating the frangible base layer 200 to expose the liquid collecting structure 310. The supporting absorbent core 300 serves to form the liquid absorbent, liquid acquisition and elastic support of the absorbent structure 001. The liquid collection structure 310 is used to store liquid that enters the interior thereof, forming a collection of free liquid. The secondary absorbent layer 400 is used to absorb liquid that has penetrated the supporting absorbent core 300, particularly liquid that has penetrated the liquid acquisition structure 310 directly in the early stage of absorption. The position matching specifically can be that the liquid collecting structures are in one-to-one correspondence with the positions of the flow dividing protrusions, so that the liquid collecting structures and the flow dividing structures of each pair form consistent arrangement on the relative positions.

The hydrophilic surface layer 100 adopts good hydrophilicity, can rapidly absorb liquid, and accelerates transfer of liquid. The provision of the frangible separator 200 facilitates rapid exposure of the mating liquid collection structure 310, allowing for rapid removal of the collected liquid by rapid separation from the absorbent structure 001. The arrangement of the diversion protrusions 110 prevents the liquid from being too concentrated when entering the hydrophilic surface layer 100, and the diversion protrusions 110 guide the liquid to be dispersed to the periphery when being impacted by the liquid through the structure of the diversion protrusions 110, so that the contact position of the liquid and the hydrophilic surface layer 100 is quickened and uniform, the absorption and utilization rate of the hydrophilic surface layer 100 and the supporting absorbent core 300 is increased, and the local expansion caused by liquid absorption at a single position is avoided; on the other hand, the split protrusions 110 form a contact bearing surface composed of multi-point supports, which is easy to dry, rapidly and higher than the hydrophilic surface layer 100 by utilizing the small volume and liquid permeation rule of the split protrusions, so that the time from wetting to drying is shortened. More importantly, by matching the liquid collecting structure 310 with the flow dividing protrusions 110, the compression generated by direct action on the liquid collecting structure 310 when the hydrophilic surface layer 100 is extruded by the outside is effectively reduced, the problem that collected liquid overflows and is absorbed due to the compression of the liquid collecting structure 310 is avoided, and therefore the liquid collecting amount is ensured; and also effectively prevents reverse osmosis of the liquid within the liquid collection structure 310. The separate liquid collection structure 310 facilitates the dispersion and preservation of the liquid, further avoiding the problem of reduced collection due to pressurized reverse osmosis or overflow. The arrangement of the supporting absorbent core 300 provides sufficient elastic support to promote intimate contact between the front and rear hydrophilic surface layers 100 and the distribution protrusions 110 before and after liquid absorption, and provides improved comfort and adhesion during use as a sanitary article, such as a diaper or a sanitary napkin. The liquid collecting structure 310 is arranged in the supporting absorbent core 300, so that on one hand, the stability of the structure of the supporting absorbent core 300 is better maintained by utilizing the elastic recovery of the supporting absorbent core, and the influence of the outside is reduced; on the other hand, the space sufficient to support the inside of the absorbent core 300 is utilized to form a dispersed multi-space liquid collection and storage of liquid, thereby increasing the stability of the collection amount of liquid.

The diverting protrusions 110 are formed by deformation of the hydrophilic skin 100, and the diverting protrusions 110 are provided with a hydrophobic coating 120 at least at the top.

The hydrophobic coating 120 serves to form a hydrophobic surface on the surface of the diverting protrusion 110. The deformation of the hydrophilic skin 100 results in a larger gap between the liquid collecting structure 310 and the corresponding shunt protrusion 110.

The diverting protrusions 110 formed by deforming the hydrophilic skin 100 help to further increase the buffering and pressure-resistant space between the diverting protrusions 110 and the corresponding liquid collecting structure 310. The reduction of the diverting protrusions 110 and the hydrophilic surface layer 100 has the effect of increasing the passage area which can enter the liquid collecting structure 310 due to the extrusion influence of the liquid collecting structure 310 caused by the external pressure during the use, thereby improving the liquid collecting effect and the liquid collecting speed and reducing the reverse osmosis. On the other hand, the structural strength of the hydrophilic surface layer 100 can be improved by the self-deformation of the hydrophilic surface layer 100, thereby providing better supporting force and reducing cost. The hydrophobic coating 120 can avoid the absorption of the liquid by the diverting protrusion 110, increase the dispersion degree of the liquid, and accelerate the drying speed of the diverting protrusion 110, so that the drying speed is improved without depending on the small area of the diverting protrusion 110 and the prior penetration, and the rapid drying of the contact surface is realized, thereby providing better dry feeling.

The diverting protrusions 110 are made of hydrophobic material, and are attached to the surface of the hydrophilic surface layer 100.

The diverting protrusions 110 can be formed during the process of attaching the hydrophilic skin 100, or can be formed before attaching the hydrophilic skin 100.

The advantage of using the hydrophobic material to form the diverting protrusions 110 is that their shape and thickness are not affected by the hydrophilic surface layer 100, and their size and shape are flexibly controlled so that they can be combined to form a better supporting surface. And the requirements on the material and thickness of the hydrophilic surface layer 100 are reduced because the limitation of the hydrophilic surface layer 100 is removed, and the cost of raw materials is reduced. This setting drives the simplification of the manufacturing process, and simultaneously, completely eliminates the water absorption effect of the diversion protrusion 110, so that the diversion protrusion 110 completely changes the water drainage function, greatly increases the effects of diversion and uniform liquid receiving, simultaneously, makes the diversion protrusion 110 maintain self dryness, and effectively avoids the reverse osmosis of the liquid collecting structure 310.

The absorbent structure 001 includes: the central collection area 010 and the peripheral absorption area 020, the diversion protrusion 110 and the liquid collecting structure 310 are arranged in the central collection area 010, the central collection area comprises a plurality of diversion shielding areas 030, the diversion shielding areas 030 are arranged in an array in the central collection area 010, and a space is reserved between every two adjacent diversion shielding areas 030.

The central acquisition region 010 serves the primary functions of liquid intake and collection. The peripheral absorption region 020 plays a role of peripheral supplementary absorption and side leakage prevention. The shunt barrier regions 030 act to shunt liquid and prevent liquid from directly penetrating the hydrophilic skin 100. The gap serves to ensure that the diverted liquid is absorbed in direct contact with the hydrophilic skin 100. The shunt shielding region 030 is formed by a shunt protrusion.

The peripheral absorption area 020 surrounding the central acquisition area 010 effectively improves the side leakage prevention effect, and firstly ensures the leakage prevention function of the absorption structure 001. Moreover, because of its cooperation with the sanitary article, the peripheral absorbent region 020 is more easily deformed and squeezed, and the concentration of the distribution protrusions 110 and the liquid collecting structure 310 in the central acquisition region 010 contributes to the control of the saturation and the efficient collection of liquid. Meanwhile, the arrangement of the peripheral absorption area 020 forms the effective supplement of the liquid absorption of the central acquisition area 010, and can greatly maintain the impact and rapid absorption of the absorption structure 001 to the liquid when the liquid absorption effect of the central acquisition area 010 is reduced. Gaps are reserved between the shunt shielding areas 030, so that the liquid after being shunted can be absorbed by the hydrophilic surface layer 100, and the absorption time is prolonged due to the fact that the shunt shielding areas 030 are impacted secondarily is avoided.

The supporting absorbent core 300 includes: a hollow yarn housing 320, supporting wires 321 and water-absorbing particles 322 filled in the yarn housing 320, and a tubular partition 311; the tubular partition 311 forms a liquid collecting structure 310 penetrating both sides of the supporting absorbent core 300 in the supporting absorbent core 300, and the supporting filaments 321 and the filling absorbent particles 322 are disposed so as to avoid the liquid collecting structure 310.

The hollow yarn housing 320 is used to provide a flexible package and containment space. The support wires 321 serve to provide a supporting force from the inside so that the yarn housing 320 has a sufficient elastic support. The filling absorbent particles 322 are used to fill the interior of the yarn housing 320 to shape and cooperate with the support filaments 321. The filler water absorbing particles 322 penetrate into the gaps between the supporting filaments 321. The tubular partition 311 serves to separate the liquid collecting structure 310 inside the yarn housing 320.

The advantage of using the inelastic yarn housing 320 is that the overall shape remains stable even after the interior is filled with the inflated filled absorbent particles 322, effectively maintaining the absorbent core 300 in a state of supporting it before and after liquid absorption, limiting the occurrence of localized transitional deformations. Elastic support wires 321 are disposed within the yarn housing 320 to form an elastic support between the upper and lower faces of the yarn housing 320. The support filaments 321 maintain the elastic deformability and overall shape stability of the support absorbent core 300 before absorbing water; after water absorption, the yarn housing 320 is matched to improve the deformation limit of the inner filling water absorption particles 322, so that local excessive deformation is avoided. At the same time, the use of the support wires 321 allows sufficient clearance for good bonding with the filled absorbent particles 322. The provision of the tubular partition walls 311 forms a channel through the supporting absorbent core 300, which, in addition to being able to contain liquid for collection, also forms a high-speed transfer channel between the hydrophilic topsheet 100 and the secondary absorbent layer 400, eliminating liquid-guiding barriers between the hydrophilic topsheet 100 and the secondary absorbent layer 400. In addition, since the dispersed liquid collecting structure 310 is small, the position of the secondary absorption layer 400 corresponding to the tubular partition wall 311 is easy to saturate, and after saturation, the secondary absorption layer 400 is different from the filling absorbent particles 322, so that the liquid in the liquid collecting structure 310 can be stored for a long time. The tubular partition 311 effectively separates the collected liquid from the filled water-absorbing particles 322, so that the speed of liquid collection can be greatly increased after the filled water-absorbing particles 322 closely attached to the tubular partition 311 are saturated, and the liquid collection amount requirement is met.

The upper opening of the tubular partition 311 is blocked by the corresponding diverting protrusion 110, and the lower opening of the tubular partition 311 is connected to the secondary absorbent layer 400; at least the inner side of the tubular partition 311 is made of hydrophobic material, and/or at least the inner side of the tubular partition 311 is coated with hydrophobic paint.

The upper side of each tubular partition wall 311 is shielded by the corresponding diverting protrusion 110 for preventing liquid from directly penetrating the hydrophilic surface layer 100 into the liquid collecting structure 310. The shielding is specifically that the diverting protrusion 110 is located on the square of the upper opening of the tubular partition 311, and the bottom surface of the diverting protrusion 110 is not smaller than the upper opening of the tubular partition 311.

Because the hydrophilic surface layer 100 is spaced, the shielding diversion protrusions 110 are formed, so that the upper part of the liquid collecting structure 310 is not sealed to influence the liquid entering, and the problem that the liquid entering amount of the liquid collecting structure 310 is too large due to direct liquid impact, so that excessive free liquid in the whole absorbing structure 001 is caused is effectively avoided. Thereby preventing the secondary absorption layer 400 from being saturated prematurely and realizing the homogenization of the overall absorption rate. The tubular partition 311 formed of a hydrophobic material can form a liquid transfer between the secondary absorbent layer 400 and the supporting absorbent core 300, accelerating absorption of the liquid. The tubular partition 311 of hydrophobic material also forms a small passage for liquid to enter the middle layer of the supporting absorbent core 300, and along the tubular partition 311, the liquid outside the tubular partition 311 can directly contact the middle of the supporting absorbent core 300 through the tubular partition 311, thereby improving the utilization rate and absorption rate of the supporting absorbent core 300.

One end of the supporting wire 321 is connected with the surface of the yarn housing 320, and the other end is connected with the bottom surface of the yarn housing 320; the support wire 321 is spiral when relaxed.

The surface of yarn sheath 320 is attached to hydrophilic skin 100. The bottom surface of the yarn housing 320 is connected to the secondary absorbent layer 400. The support wire 321 forms a spring-like structure in the yarn housing 320 in a spiral shape.

The connection design at the two ends of the supporting wire 321 enables the supporting wire 321 to form stable arrangement in the yarn housing 320, the relative position of the supporting wire and the yarn housing 320 cannot move, and the resetting after the surface layer and the bottom layer of the yarn housing 320 are shifted can be further assisted. The helical arrangement allows the support filaments 321 to form a plurality of elastic supports between the surface and bottom surfaces of the yarn housing 320, allowing the support absorbent core 300 to retain sufficient elastic support capacity until the filled absorbent particles 322 are unexpanded.

The axis of the supporting wires 321 is perpendicular to the hydrophilic surface layer and densely distributed in the yarn housing 320; the adjacent support wires 321 are staggered with each other, and the water absorbing particles 322 are filled between the support wires 321.

The vertically disposed axis helps to cooperatively support the direction of the applied force of the absorbent core 300. The uniform distribution helps to improve the elastic support force supporting the absorbent core 300. The interlaced support wires 321 help to further support and bear against each other.

The interaction between the support wires 321 forms a support skeleton within the yarn housing 320 that fills the water absorbent particles 322 such that portions of the filled water absorbent particles 322 are bridged between the surface and bottom of the yarn housing 320, which not only aids in the absorption and utilization of the filled water absorbent particles 322, but also enhances the elastic action of the elastic wires by the particles trapped between the elastic wires. Meanwhile, the interaction also improves the whole elastic supporting capacity of the supporting wires 321, the mutual staggering is beneficial to more uniform elastic distribution, and the vacant positions among the supporting wires 321 are compensated.

As shown in fig. 2, a water locking member 312 is movably disposed in the liquid collecting structure 310.

The water-locking member 312 is kept at a sufficient distance from the tubular partition 311, the hydrophilic surface layer 100 and the secondary absorbent layer 400 so that the water-locking member 312 can be movably arranged in the liquid collecting structure 310. The water lock 312 is capable of locking liquid into the liquid collection structure 310 and releasing the collected liquid when squeezed.

The water locking member 312 is added so that the liquid entering the liquid collecting structure 310 can be preferentially carried and collected by the water locking member 312, and is absorbed by the secondary absorption layer 400 after the water locking member 312 is saturated. The liquid collection requirement on the liquid inlet amount is reduced, and the possibility of liquid collection failure is reduced. But also can avoid shaking over during movement to be absorbed again by the liquid collecting structure 310; on the other hand, the liquid collecting effect and speed of the liquid collecting structure 310 can be improved, and reverse osmosis is reduced. The water lock 312 forms a support carrier that further promotes overall elastic support. And the liquid collecting structure 310 is not completely filled in order to reduce the influence of external compression on the water locking member 312, thereby ensuring the collecting capability thereof.

Example 2

This embodiment is an absorbent structure 001 for collecting liquid, comprising: a hydrophilic top layer 100 and a frangible bottom layer 200; a supporting absorbent core 300 is provided between the hydrophilic top sheet 100 and the easily separable bottom sheet 200; a secondary absorbent layer 400 is also disposed between the supporting absorbent core 300 and the easily separable bottom layer 200; the surface of the hydrophilic surface layer 100 is provided with a plurality of diverting protrusions 110; the supporting absorbent core 300 is provided with a plurality of liquid collecting structures 310, and the liquid collecting structures 310 are matched with the positions of the diversion protrusions 110; the liquid collecting structure 310 is independent from each other in the supporting absorbent core 300, and one end of the liquid collecting structure 310 is connected to the hydrophilic top sheet 100 and the other end is connected to the secondary absorbent layer 400, and communicates the hydrophilic top sheet 100 and the secondary absorbent layer 400. Hydrophilic skin 100 is used to first contact and transport a liquid. The shunt protrusions 110 serve to form multi-point supports protruding from the hydrophilic skin 100, reducing the overall contact of the hydrophilic skin 100 with the contact surface. The matching of the position of the diverting protrusions 110 with the liquid collecting structure 310 serves to increase the distance between the surface of the absorbent structure 001 and the liquid collecting structure 310.

The frangible base layer 200 is used to form a liquid impermeable base layer and the liquid stored in the liquid collecting structure 310 can be discharged by separating the frangible base layer 200 to expose the liquid collecting structure 310. The supporting absorbent core 300 serves to form the liquid absorbent, liquid acquisition and elastic support of the absorbent structure 001. The liquid collection structure 310 is used to store liquid that enters the interior thereof, forming a collection of free liquid. The secondary absorbent layer 400 is used to absorb liquid that has penetrated the supporting absorbent core 300, particularly liquid that has penetrated the liquid acquisition structure 310 directly in the early stage of absorption. The releasable substrate 200 includes: the waterproof bottom film and the waterproof outer layer nonwoven are connected with the secondary absorption layer 400 through the easy tearing strip. The hydrophilic surface layer 100 is made of hydrophilic material, and may be specifically a nonwoven fabric. The hydrophilic surface layer 100 forms a certain height difference between the flow dividing protrusions 110 and the liquid collecting structure 310, so that the liquid dispersed through the flow dividing protrusions 110 can enter the liquid collecting structure 310 through the hydrophilic surface layer 100 while avoiding direct impact of the external liquid into the liquid collecting structure 310.

The diverting protrusion 110 may be a small-area bump having a horizontal cross-section size of 1/70 to 1/30 of the hydrophilic skin layer 100. The diverting protrusions 110 can be square, rectangular, cylindrical or frustoconical or any combination of the several. Meanwhile, the bump can be in a shape with a small section and a large section, and the top is in a plane shape. The diverting protrusions 110 are regularly distributed on the hydrophilic surface layer 100, and occupy less than one half of the surface area of the hydrophilic surface layer 100, and not less than five. Each of the diverting protrusions 110 is equal in size. The projected thickness is not less than half the thickness of the hydrophilic skin layer 100. In use as a paper diaper or sanitary napkin, liquid first enters the hydrophilic topsheet 100 of the absorbent structure 001. The frangible base layer 200 can also be quickly and easily separated by providing an epitaxial gripping edge and a weakened structural indentation.

In actual use, the liquid first impacts the diverting protrusion 110, and a small portion of the liquid may be absorbed by the diverting protrusion 110 under the action of the diverting protrusion 110, and most of the liquid is dispersed around the diverting protrusion 110 due to the impact force and then contacts the hydrophilic surface layer 100. By the action of the hydrophilic topsheet 100, a major portion of the liquid is absorbed by the supporting absorbent core 300 and a minor portion falls into the liquid collecting structure 310. The contact surface is the use surface of the absorbent structure 001, such as the skin of an infant when the absorbent structure 001 is used in a diaper. The surface of the hydrophilic topsheet 100, i.e., the side of the hydrophilic topsheet 100 that is remote from the supporting absorbent core 300. The diverting protrusions 110 are formed by deformation of the hydrophilic skin 100, and at least the top of the diverting protrusions 110 is provided with a hydrophobic coating 120. The hydrophobic coating 120 serves to form a hydrophobic surface on the surface of the diverting protrusion 110. The deformation of the hydrophilic skin 100 results in a larger gap between the liquid collecting structure 310 and the corresponding shunt protrusion 110.

The deformation of the hydrophilic surface layer 100 may specifically be: the hydrophilic top layer protrudes from the side close to the supporting absorbent core 300 to the side far from the supporting absorbent core 300, forming the diverting protrusions 110. This deformation may be achieved by extrusion of the hydrophilic skin 100, or by an embossing-like process. The hydrophobic coating 120 is bonded to the diverting protrusion 110 by spraying or adhesion. In particular, the hydrophobic coating employed by the hydrophobic coating 120 can be nano-titania or nano-silica. The hydrophobic coating 120 completely covers the surface of the diverting protrusion 110. The diverting protrusions 110 are made of hydrophobic material and are attached to the surface of the hydrophilic surface layer 100. The diverting protrusions 110 can be formed during the process of attaching the hydrophilic skin 100, or can be formed before attaching the hydrophilic skin 100. The diverting protrusions 110 can be flakes or blocks that are attached to the surface of the hydrophilic layer by blowing, dripping, or adhering.

As shown in fig. 7 and 8, the absorbent structure 001 includes: the central collection area 010 and the peripheral absorption area 020, the diversion protrusion 110 and the liquid collecting structure 310 are arranged in the central collection area 010, the central collection area comprises a plurality of diversion shielding areas 030, the diversion shielding areas 030 are arranged in an array in the central collection area 010, and a space is reserved between every two adjacent diversion shielding areas 030. The shunt shielding region 030 is formed by the shunt protrusion 110.

The peripheral absorption region 020 plays a role of peripheral supplementary absorption and side leakage prevention. The shunt barrier regions 030 act to shunt liquid and prevent liquid from directly penetrating the hydrophilic skin 100. The gap serves to ensure that the diverted liquid is absorbed in direct contact with the hydrophilic skin 100. The peripheral absorption region 020 plays a role of peripheral supplementary absorption and side leakage prevention. The interval is used for avoiding the secondary collision of the shunt shielding region 030 to reduce the absorption speed of the hydrophilic surface layer 100 and prolonging the drying time of the shunt shielding region 030, and the array arrangement can be specifically a matrix array or a circular array. The central acquisition region 010 may be specifically rectangular, and the ratio of the area of the central acquisition region 010 to the peripheral absorbent region 020 is 1:1 to 2:3. The cross section of the diverting protrusions 110 can be circular, rectangular, square, etc. But also trapezoidal, semicircular, etc. As shown in fig. 6, the supporting absorbent core 300 includes: a hollow yarn housing 320, supporting wires 321 and water-absorbing particles 322 filled in the yarn housing 320, and a tubular partition 311; the tubular partition 311 is formed in the supporting absorbent core 300 so as to penetrate the liquid collecting structure 310 on both sides of the supporting absorbent core 300, and the supporting filaments 321 and the water-absorbent particles 322 are provided so as to avoid the liquid collecting structure 310. In the central acquisition region 010, the intervals between two adjacent split shielding regions 030 are equal.

The hollow yarn housing 320 is used to provide a flexible package and containment space. The support wires 321 serve to provide a supporting force from the inside so that the yarn housing 320 has a sufficient elastic support. The filling absorbent particles 322 are used to fill the interior of the yarn housing 320 to shape and cooperate with the support filaments 321. The filler water absorbing particles 322 penetrate into the gaps between the supporting filaments 321. The tubular partition 311 serves to separate the liquid collecting structure 310 inside the yarn housing 320. The tubular partition 311 has a straight tubular shape, and may be a square tubular shape or a circular tubular shape. The tubular partition 311 prevents the liquid in the liquid collecting structure 310 from contacting the filled absorbent particles 322, thereby achieving effective preservation of the liquid. The support filaments 321 can specifically be spandex filaments. The water absorbent particles 322 may be filled with polymer water absorbent resin particles or powder. The upper opening of the tubular partition 311 is blocked by the corresponding diverting protrusion 110, and the lower opening of the tubular partition 311 is connected to the secondary absorbent layer 400; as shown in fig. 4, at least the inner side of the tubular partition 311 is made of a hydrophobic material, and/or at least the inner side of the tubular partition 311 is coated with a hydrophobic coating.

The upper side of each tubular partition wall 311 is shielded by the corresponding diverting protrusion 110 for preventing liquid from directly penetrating the hydrophilic surface layer 100 into the liquid collecting structure 310. The shielding is specifically that the diverting protrusion 110 is located on the square of the upper opening of the tubular partition 311, and the bottom surface of the diverting protrusion 110 is not smaller than the upper opening of the tubular partition 311. The tubular partition 311 is made of a hydrophobic material and is circular. The bottom surface of the diverting protrusion 110 is in the same size as the upper opening of the liquid collecting structure 310. The diverting protrusion 110 is located directly above the liquid collecting structure 310 and completely covers the upper opening of the liquid collecting structure 310 in a vertical projection. As shown in fig. 5, the support wire 321 has one end connected to the surface of the yarn housing 320 and the other end connected to the bottom surface of the yarn housing 320; the support wire 321 is helical when relaxed. The surface of yarn sheath 320 is attached to hydrophilic skin 100. The bottom surface of the yarn housing 320 is connected to the secondary absorbent layer 400.

The support wire 321 forms a spring-like structure in the yarn housing 320 in a spiral shape. One end of each support wire 321 located in the support absorbent core 300 is connected to the inner surface of one side of the yarn casing 320 adjacent to the hydrophilic surface layer 100, and the other end is connected to the inner surface of one side of the yarn casing 320 adjacent to the secondary absorbent layer 400. In the non-compressed state, each supporting wire 321 is spirally wound and stands, a gap is reserved between adjacent supporting wires 321, and the filling water absorbing particles 322 can enter the gap. The axis of the support filaments 321 is perpendicular to the hydrophilic skin 100 and densely packed within the yarn sheath 320; adjacent support wires 321 are staggered with each other, and the water absorbing particles 322 are filled between the support wires 321. The vertically disposed axis helps to cooperatively support the direction of the applied force of the absorbent core 300. The uniform distribution helps to improve the elastic support force supporting the absorbent core 300. The interlaced support wires 321 help to further support and bear against each other.

The water-absorbing particles 322 can be specifically a polymer water-absorbing resin powder having a particle size smaller than the gaps formed between the elastic filaments, so that the water-absorbing particles 322 can enter the elastic filaments to form a spiral structure. The vertical projection of the supporting wires 321 is a circular ring, and the overlapping part between two adjacent supporting wires 321 is 1/3 to 2/3 of the radius of the circular ring. A water locking piece 312 is movably arranged in the liquid collecting structure 310. The water-locking member 312 is kept at a sufficient distance from the tubular partition 311, the hydrophilic surface layer 100 and the secondary absorbent layer 400 so that the water-locking member 312 can be movably arranged in the liquid collecting structure 310. The water lock 312 is capable of locking liquid into the liquid collection structure 310 and releasing the collected liquid when squeezed. Specifically, the water locking member 312 can be a sponge, the height of the water locking member 312 is 1/2 to 2/3 of the length of the liquid collecting structure 310, and a space of 1mm to 2mm can be left between the side surface of the water locking member 312 and the inner wall of the liquid collecting structure 310.

Example 3

A disposable sanitary article comprises an absorbent structure 001 for collecting liquid. The absorbent structure 001 includes: a hydrophilic top layer 100 and a frangible bottom layer 200; a supporting absorbent core 300 is arranged between the hydrophilic top layer 100 and the easily separable bottom layer 200; a secondary absorbent layer 400 is further disposed between the supporting absorbent core 300 and the easily separable bottom layer 200; the surface of the hydrophilic surface layer 100 is provided with a plurality of diverting protrusions 110; the supporting absorbent core 300 is provided with a plurality of liquid collecting structures 310, and the liquid collecting structures 310 are matched with the positions of the flow dividing protrusions 110; the liquid collecting structure 310 is independent from each other in the supporting absorbent core 300, and one end of the liquid collecting structure 310 is connected to the hydrophilic top sheet 100, and the other end is connected to the secondary absorbent layer 400, and communicates the hydrophilic top sheet 100 and the secondary absorbent layer 400.

The diverting protrusions 110 can be formed by deformation of the hydrophilic skin 100, and the diverting protrusions 110 are provided with a hydrophobic coating 120 at least at the top. The diverting protrusions 110 can be made of a hydrophobic material, and attached to the surface of the hydrophilic surface layer 100. The absorbent structure 001 includes: the central collecting area 010 and the peripheral absorbing area 020, the shunt protrusions 110 and the liquid collecting structure 310 are arranged in the central collecting area 010 to form a plurality of shunt shielding areas 030, the shunt shielding areas 030 are arranged in an array in the central collecting area 010, and a space is reserved between every two adjacent shunt shielding areas 030. The supporting absorbent core 300 includes: a hollow yarn housing 320, supporting wires 321 and water-absorbing particles 322 filled in the yarn housing 320, and a tubular partition 311; the tubular partition 311 forms a liquid collecting structure 310 penetrating both sides of the supporting absorbent core 300 in the supporting absorbent core 300, and the supporting filaments 321 and the filling absorbent particles 322 are disposed so as to avoid the liquid collecting structure 310.

The upper opening of the tubular partition 311 is blocked by the corresponding diverting protrusion 110, and the lower opening of the tubular partition 311 is connected to the secondary absorbent layer 400; at least the inner side of the tubular partition 311 is made of hydrophobic material, and/or at least the inner side of the tubular partition 311 is coated with hydrophobic paint. One end of the supporting wire 321 is connected with the surface of the yarn housing 320, and the other end is connected with the bottom surface of the yarn housing 320; the support wire 321 is spiral when relaxed. The axis of the supporting wires 321 is perpendicular to the hydrophilic surface layer 100 and densely distributed in the yarn housing 320; the adjacent support wires 321 are staggered with each other, and the water absorbing particles 322 are filled between the support wires 321. The liquid collecting structure 310 is internally provided with a water locking piece 312 which is movably arranged. During use, as liquid enters the absorbent structure 001.

During the infiltration process, a portion of the liquid contacts the filled absorbent particles 322 adjacent to the top sheet supporting the absorbent core, preferentially being absorbed by the filled absorbent particles 322. As the absorption of liquid by the filled absorbent particles 322 near the top sheet supporting the absorbent core 300 increases, the liquid absorption capacity of the filled absorbent particles 322 at the top sheet supporting the absorbent core 300 decreases. The reduced liquid absorption capacity results in a slowed absorption rate and a portion of the free liquid that is not absorbed in time passes through the liquid permeable gap between the flow dividing protrusions 110 formed by the hydrophilic skin 100 and the liquid collecting structure 310 into the liquid collecting structure 310. The liquid collecting structure 310 is a communicated structure, the liquid entering the liquid collecting structure 310 can be collected by the secondary absorption layer 400 with water absorption and flow guiding functions below, and after the secondary absorption layer 400 is saturated at the position corresponding to the liquid collecting structure 310, the liquid collecting structure 310 starts to store free liquid.

The thickness of the absorbent structure 001 is 8mm to 12mm. The horizontal cross section of the absorbent structure 001 is 0.6 to 0.9 times the length of the absorbent structure 001 as compared with the sanitary article (diaper); the width is 0.2 to 0.5 times of the width of the sanitary article. The horizontal cross-sectional dimension of the diverting boss 110 can be, in particular, a square with a side length of 4mm to 10mm or a circle with a diameter of 4mm to 10 mm.

It should be understood that the foregoing examples of the present invention are merely illustrative of the present invention and are not intended to limit the present invention to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An absorbent structure for collecting liquids, comprising: a hydrophilic surface layer, an easily separable bottom layer, a supporting absorbent core and a secondary absorbent layer; the supporting absorbent core is arranged between the hydrophilic surface layer and the easily separable bottom layer, and the secondary absorbent layer is arranged between the supporting absorbent core and the easily separable bottom layer; the surface of the hydrophilic surface layer is provided with a plurality of diversion protrusions; the supporting absorption core is provided with a plurality of liquid collecting structures, and the liquid collecting structures are matched with the position of the diversion protrusions; each liquid collecting structure is mutually independent in the supporting absorption core, one end of the liquid collecting structure is connected with the hydrophilic surface layer, and the other end of the liquid collecting structure is connected with the secondary absorption layer and is communicated with the hydrophilic surface layer and the secondary absorption layer.

2. The liquid-collecting absorbent structure of claim 1, wherein the diverting protrusions are formed by deformation of the hydrophilic surface layer, and wherein at least the top of the diverting protrusions is provided with a hydrophobic coating.

3. The liquid-collecting absorbent structure of claim 1, wherein the diverter projections are hydrophobic and are attached to the surface of the hydrophilic topsheet.

4. The liquid-collecting absorbent structure of claim 1, further comprising: the distribution bulge and the liquid collecting structure are arranged in the central collecting area; the central acquisition area comprises a plurality of split shielding areas, the split shielding areas are arranged in an array in the central acquisition area, and a space is reserved between every two adjacent split shielding areas.

5. The liquid-collecting absorbent structure of any one of claims 1-4 wherein the supporting absorbent core comprises: a hollow yarn housing, a support wire and a filler water absorbing particle disposed within the yarn housing, and a tubular partition wall; the tubular partition wall forms a liquid collecting structure penetrating through two sides of the supporting absorption core in the supporting absorption core, and the supporting wires and the filling water absorbing particles are arranged to avoid the liquid collecting structure.

6. The liquid-collecting absorbent structure as set forth in claim 5, wherein the upper opening of said tubular partition is blocked by the corresponding diverting protrusion, and the lower opening of said tubular partition is connected to said secondary absorbent layer;

7. The liquid-collecting absorbent structure of claim 5 wherein said support filaments are attached at one end to the surface of said yarn housing and at the other end to the bottom surface of said yarn housing; the support wire is spiral when relaxed.

8. The liquid-collecting absorbent structure of claim 7 wherein the axes of said support filaments are perpendicular to the hydrophilic surface layer and are densely packed within said yarn sheath; the adjacent supporting wires are staggered, and the filling water absorbing particles are filled between the supporting wires.

9. An absorbent structure for collecting liquids as defined in any one of claims 1-4, characterized in that said liquid collecting structure is provided with a movably arranged water locking member.

10. A disposable hygienic device comprising: an absorbent structure for collecting liquids as claimed in any of claims 1-9.