Flow guide component

Abstract

The utility model discloses a flow guide component which comprises a first surface layer and a second surface layer which are sequentially arranged from top to bottom, and a liquid absorption layer is arranged between the first surface layer and the second surface layer. The first surface layer and the second surface layer are respectively provided with a flow guide port for liquid circulation, the liquid absorption layer comprises a plurality of connecting yarns, one end of each connecting yarn is elastically connected to the first surface layer, the other end of each connecting yarn is elastically connected to the second surface layer, and a storage cavity for storing liquid is formed among the connecting yarns. The flow guide component has the effects of rapidly absorbing liquid, being low in back seepage amount and large in diffusion amount and reducing foreign body sensation felt by a user.

Description

Technical Field

[0001] The present invention relates to the field of absorbent products, and in particular to a flow guiding component. Background Art

[0002] Absorbent products are generally used to absorb and contain human body excretions, mainly including but not limited to sanitary napkins, baby diapers, adult diapers and other similar products, usually composed of a surface layer, a diversion layer, an absorbent layer and an anti-leakage bottom layer.

[0003] The guide layer is generally located between the surface layer and the absorbent layer. Its main function is to guide the liquid from the surface layer to the absorbent layer, improve the utilization efficiency and absorption efficiency of the absorbent product, keep the liquid away from the surface layer, keep the surface layer of the absorbent product dry, and avoid moisture causing stuffiness and allergies. At present, the guide layer usually uses non-woven materials, including meltblown fabrics, spunbond fabrics, needle-punched fabrics, and carded bonded non-woven fabrics.

[0004] In addition to the selection of materials, partitions and channel designs are usually performed on the guide layer to maximize the absorption efficiency and absorption capacity of the absorbent product.

[0005] Although current absorbent products can better guide fluid to be absorbed, the commonly used non-woven material diversion layer is thin and its fibers are irregularly arranged, so the diversion capacity is limited when the amount of liquid generated is large, resulting in large local absorption, moisture at the liquid generation point, and large rewet amount. Summary of the invention

[0006] In order to solve the problem raised in the background technology, the present application provides a flow guiding component.

[0007] The present application provides a flow guide component that adopts the following technical solution:

[0008] A flow-guiding component comprises a first surface layer and a second surface layer which are arranged in sequence from top to bottom, a liquid-absorbing layer being arranged between the first surface layer and the second surface layer; the first surface layer is provided with a flow-guiding port for liquid circulation, the liquid-absorbing layer comprises a plurality of densely distributed and spaced connecting yarns, a plurality of the connecting yarns are elastically connected to the first surface layer at one end and to the second surface layer at the other end, and a storage cavity for storing liquid is formed between the plurality of the connecting yarns.

[0009] By adopting the above technical scheme, the liquid flows into the storage cavity of the fine liquid layer through the guide port of the first surface layer, and under the action of gravity of liquid adsorption, the connecting yarn is elastically deformed and then tightened, and the capillary effect of the connecting yarn causes the liquid to quickly seep down and be adsorbed in the liquid absorbent layer, thereby keeping the first surface layer dry. Compared with the traditional absorbent core, the guide component of the present application uses the connecting yarn as the material for absorbing liquid, which has better elasticity. After the connecting yarn is deformed, it can reduce the foreign body sensation of the user after wearing it. Moreover, the liquid can diffuse quickly in the liquid absorbent layer, and the liquid of the first surface layer can be quickly guided into the liquid absorbent layer, thereby improving the use experience of the guide component.

[0010] Preferably, the fineness of the connecting yarn is 10-150D, and each of the connecting yarns contains 1-144 of the first fiber filaments.

[0011] By adopting the above technical solution, the fineness range of the connecting yarn is between 10-150D, which allows the liquid absorbent layer to maintain sufficient supporting strength while being elastic, reducing the amount of liquid re-seepage and improving the breathability of the absorbent product; at the same time, the connecting yarn with moderate fineness is combined with 1-144 of the first fibers, which can better adapt to the needs of different application scenarios and provide users with a comfortable use experience.

[0012] Preferably, the connecting yarn includes a first monomer and a second monomer of different specifications, the fineness of the first monomer is 10-150D, and the first monomer is composed of 1-144 of the first fiber filaments; the fineness of the second monomer is 50-150D, and the second monomer is composed of 24-144 of the first fiber filaments.

[0013] By adopting the above technical solution, the connecting yarns are set to two different specifications, and the proportion of the combined yarns is adjusted so that the liquid-absorbing layer has advantages of different specifications, thereby improving the adaptability of the flow-guiding component.

[0014] Preferably, each of the second monomers includes an outer layer of yarn and an inner first fiber filament, and the first fiber filaments are interwoven and twisted with each other; the outer layer of yarn is wrapped around the first fiber filaments; each of the first fiber filaments is inclined relative to the first surface layer; and the angle between each of the first fiber filaments and the first surface layer is 25-75 degrees.

[0015] By adopting the above technical solution, the first fiber filaments on the connecting yarn are arranged at an angle. When the liquid enters the liquid-absorbing layer through the guide port of the first surface layer, the liquid adheres to the first fiber filaments of the liquid-absorbing layer, thereby driving the first fiber filaments to deform and tighten under the weight of the liquid. The connecting yarn becomes longer and the liquid in the liquid-absorbing layer is moved away from the first surface layer, so that the first surface layer is breathable and not stuffy, which brings a good use experience to the user.

[0016] Preferably, the ratio of the length of each connecting yarn to the shortest distance between adjacent connecting yarns is 0.6-15.

[0017] By adopting the above technical scheme, when the thickness of the guide component is fixed, the smaller the ratio is, the larger the gap between the connecting yarns of the guide component is, the lower the supporting force of the connecting yarns on the first surface layer and the second surface layer is, and the larger the storage cavity is. However, if the ratio is too small, it is easy to cause the connecting yarns to bend too much under the action of liquid gravity, causing the connecting yarns to lose their resilience; and when the ratio is larger, the support beam between the first surface layer and the second surface layer is improved, but when the ratio is too large, the connecting yarns are too hard, which easily leads to excessive strength of the connecting yarns and makes the guide component as a whole too hard, bringing a bad user experience; and when the connecting yarns are too dense, the storage cavity is too small, thereby reducing the liquid absorption capacity of the liquid absorbent layer, which is not conducive to liquid absorption. Therefore, setting the ratio to 0.6-15 can effectively improve the liquid absorption capacity of the liquid absorbent layer while satisfying the support of the liquid absorbent layer for the first surface layer and the second surface layer.

[0018] Preferably, the first surface layer is formed by interweaving a plurality of first yarns, and the guide port for liquid flow is formed on the first surface layer. The fineness of the first yarn is 20-200D, and the first yarn is composed of 1-288 second fiber filaments.

[0019] Because the greater the fineness, the thicker the first yarn, the smaller the gap between each first yarn, resulting in a smaller guide port, and the guide component takes too long to absorb liquid through the guide port. By adopting the above technical solution, the first layer is designed to have a fineness of 20-200D and is matched with 1-288 first fiber filaments, which not only makes the guide component have a three-dimensional sense and good drape, but also enables the first surface layer to maintain a stable passage of liquid, thereby accelerating the speed at which the absorbent product absorbs liquid.

[0020] Preferably, the second surface layer is formed by interweaving a plurality of second yarns, the fineness of the second yarns is 20-200D, and the second yarns are composed of 1-288 second fiber filaments.

[0021] Because the fineness of the second yarn is larger, the thicker the second yarn is, the smaller the gap between each second yarn is, resulting in a smaller guide port and a longer storage time of the liquid in the guide component. By adopting the above technical solution, the second surface layer is designed to have a fineness of 20-200D and is matched with 1-288 second fiber filaments, which not only makes the guide component have a three-dimensional sense and good drape, but also enables the second surface layer to maintain stable diffusion of the liquid, which can be fully absorbed by the absorbent body below, reducing the amount of backseepage of the absorbent product.

[0022] Preferably, the thickness of the flow guiding component is 0.5-6 mm, and the gram weight of the flow guiding component is 60-350 gsm.

[0023] By adopting the above technical solution, if the thickness is too small, the storage cavity between the connecting yarns of the guide component will be too small, the absorption speed will be slow, and the guide component will have no obvious elasticity; if the thickness is too large, the connecting yarns of the guide component will be too long and will be easily bent, resulting in irreversible deformation; at the same time, guide components of different thicknesses can be used for different types of products, for example, 0.5-3mm is generally used in sanitary napkins and panty liners, and 3-6mm can be used in diapers.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Liquid flows into the storage cavity of the fine liquid layer through the diversion port of the first surface layer. Under the gravity of liquid absorption, the connecting yarn is elastically deformed and then tightened. Under the capillary effect of the connecting yarn, the liquid is quickly infiltrated and absorbed in the liquid absorption layer, keeping the first surface layer dry and reducing the back-seepage amount of the diversion component. Compared with the traditional absorbent core, the diversion component of the present application uses the connecting yarn as the material for absorbing liquid, which has better elasticity. After the connecting yarn is deformed, it can reduce the foreign body feeling of the user after wearing it. Moreover, the liquid can quickly diffuse to the entire liquid absorption layer, so as to quickly divert the liquid of the first surface layer into the liquid absorption layer, thereby improving the use experience of the diversion component.

[0026] 2. The first fiber filaments on the connecting yarn are arranged at an angle. When the liquid enters the liquid-absorbing layer through the guide port of the first surface layer, the liquid adheres to the first fiber filaments of the liquid-absorbing layer, thereby driving the first fiber filaments to deform under the weight of the liquid, causing the liquid to diffuse in the liquid-absorbing layer, thereby making the first surface layer breathable and not stuffy, bringing a good user experience.

[0027] 3. The elastic connection between the connecting yarn and the first surface layer and the second surface layer makes the overall touch and press elasticity and rebound of the flow guide component obvious;

[0028] 4. The flow-guiding component of the present application can be used in conjunction with a traditional absorbent core to form a composite core, thereby further adapting to the needs of different application scenarios, improving the practicality of the composite core, and providing users with a comfortable use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the guide component of the embodiment of the present application.

[0030] Figure 2 4 is a cross-sectional view of the flow guide component of this embodiment.

[0031] Figure 3 yes Figure 1 A is an enlarged view of the middle image.

[0032] Description of reference numerals:

[0033] 1. First surface layer; 2. Second surface layer; 3. Liquid absorption layer; 31. Connecting yarn; 32. Storage cavity; 311. First fiber filament. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] Example 1

[0036] Embodiment 1 of the present application discloses a flow guiding component. Figure 1 , Figure 2 and Figure 3 The flow-guiding member comprises a first surface layer 1 and a second surface layer 2 arranged in sequence from top to bottom, and a liquid-absorbing layer 3 is arranged between the first surface layer 1 and the second surface layer 2; the first surface layer 1 is provided with a flow-guiding port for liquid circulation, and the liquid-absorbing layer 3 comprises a plurality of densely distributed and spaced connecting yarns 31, and each connecting yarn 31 is elastically connected to the first surface layer 1 at one end and elastically connected to the second surface layer 2 at the other end; the first surface layer 1 and the second surface layer 2 are parallel to each other, and each connecting yarn 31 is perpendicular to the first surface layer 1 and the second surface layer 2 at the same time, and a liquid-storing layer is formed between each connecting yarn 31. In the present embodiment, the storage cavity 32 comprises a vertical hollow channel and a horizontal spacing channel, and the liquid rapidly enters the liquid absorbent layer 3 from the first surface layer 1 through the guide port and the vertical hollow channel or the horizontal spacing channel in sequence, thereby staying in the liquid absorbent layer 3, and completing the rapid absorption of the liquid on the first surface layer 1; the guide component of the present application can be used in conjunction with a traditional absorbent core (i.e., fluff pulp mixed with a polymer absorbent resin) to form a composite core, thereby further adapting to the needs of different application scenarios, improving the practicability of the composite core, and bringing a comfortable use experience to the user.

[0037] Reference Figure 2 In each flow-guiding component, the connecting yarn 31 includes a plurality of first fiber filaments 311, and the fineness of the connecting yarn 31 is 10-150D. In the same flow-guiding component, the connecting yarn 31 includes first monomers and second monomers of different specifications. The fineness of the first monomer is 10-150D, and the first monomer is composed of 1-144 first fiber filaments 311; the fineness of the second monomer is 50-150D, and the second monomer is composed of 24-144 first fiber filaments 311; by designing suitable and different types of connecting yarn 31 finenesses and adjusting different yarn combinations, the liquid-absorbing layer 3 is provided with good deformation resistance and the advantages of different specifications.

[0038] The appropriate fineness enables the connecting yarn 31 to have good deformation resistance and improves the overall elasticity of the flow-guiding component; each connecting yarn 31 contains 1-144 first fiber filaments 311. Within an appropriate range, the more the number of first fiber filaments 311 constituting the connecting yarn 31 is, the more obvious the capillary effect inside the connecting yarn 31 is, so that the diffusion range of the flow-guiding component is increased and the downward flow-guiding speed is accelerated;

[0039] Reference Figure 2 When the first monomer includes more than one fiber filament, each of the first monomer and the second monomer includes an outer layer of yarn and an inner first fiber filament 311, and the inner first fiber filament 311 is interwoven and twisted with each other; when the first monomer contains only one fiber filament, the first monomer does not contain an outer layer of yarn; the outer layer of yarn is composed of a plurality of fibers, and the plurality of fibers are surrounded to form a circle and thus wrapped around the fiber filament; each first fiber filament 311 is arranged relatively inclined to the first surface layer 1; the angle between each first fiber filament 311 and the first surface layer 1 is 25-75 degrees; when the angle is too large, the supporting force is poor and the back-infiltration amount is large; if the angle is too small, the strength of the connecting yarn 31 is too large, the moisture absorption capacity and the rebound of the guide component become poor, resulting in a small thickness, slow absorption speed and itchy feeling when wearing; after testing, the best angle is 45° (the error is within plus or minus 5°).

[0040] The ratio of the length of each connecting yarn 31 to the distance between adjacent connecting yarns 31 is 0.6-15. In this embodiment, after testing, the preferred value of this ratio is:

[0041] 1. 3.4 (weight of flow guide component: 290gsm, thickness: 1.8mm);

[0042] 2. 2.0 (the guide component has a gram weight of 120gsm and a thickness of 2.0mm);

[0043] 3, 12 (the guide component has a gram weight of 380gsm and a thickness of 5mm).

[0044] The connecting yarns 31 are arranged in a plurality of groups. The connecting yarns 31 of each group are arranged along the length direction of the air guide member, and the connecting yarns 31 of the same group are arranged along the width direction of the air guide member.

[0045] The thickness of the flow-guiding member is 0.5-6 mm, and the gram weight of the flow-guiding member is 60-350 gsm; the first surface layer 1 is formed by interweaving a plurality of first yarns, the fineness of each first yarn is 20-200D, and the first yarn is composed of 1-288 second fiber filaments; the second surface layer 2 is formed by interweaving a plurality of second yarns, the fineness of the second yarn is 20-200D, and the second yarn is composed of 1-288 second fiber filaments;

[0046] The present application conducts experimental analysis on the D number (i.e., fineness) and F number of each part of the flow guide component to obtain the optimal flow guide component parameters. The D number refers to the mass in grams of a 9000m long yarn at the standard moisture regain; the F number refers to the number of microfibers in a yarn.

[0047] In this embodiment, the optimal data obtained through experiments are: the fineness of the first yarn on the first surface layer 1 is 75D, the F number is 36, the fineness of the second yarn is 75D, the F number is 36; there are two types of connecting yarns 31 of the liquid-absorbing layer 3, the specification of the first connecting yarn 31 is 25D / 1F; the specification of the second connecting yarn 31 is 120D / 36F, the ratio of the two is 1:3, the weight of the guide component is 200gsm, and the thickness is 2.0mm.

[0048] Example 2

[0049] In Example 2 of the present application, the fineness of the first yarn on the first surface layer 1 is 75D, and the F number is 36, and the fineness of the second yarn is 75D, and the F number is 36; there are two types of connecting yarns 31 of the liquid-absorbing layer 3, and the specification of the first connecting yarn 31 is 25D / 1F; the specification of the second connecting yarn 31 is 120D / 36F=3:1, and the guide component has a gram weight of 145gsm and a thickness of 1.9mm.

[0050] Example 3

[0051] In Example 3 of the present application, the fineness of the first yarn on the first surface layer 1 is 75D, and the F number is 36; the fineness of the second yarn is 75D, and the F number is 36; the type of connecting yarn 31 of the liquid-absorbing layer 3 is one, and the specification of the connecting yarn 31 is 25D / 1F; the weight of the guide component is 110gsm, and the thickness is 2.0mm.

[0052] Example 4

[0053] In Example 4 of the present application, the fineness of the first yarn on the first surface layer 1 is 75D, and the F number is 36; the fineness of the second yarn is 75D, and the F number is 36; the type of connecting yarn 31 of the liquid-absorbing layer 3 is one, and the specification of the connecting yarn 31 is 120D / 36F; the weight of the guide component is 300gsm and the thickness is 3.0mm.

[0054] Example 5

[0055] In Example 5 of the present application, the fineness of the first yarn on the first surface layer 1 is 20D, and the F number is 1; the fineness of the second yarn is 20D, and the F number is 1; there are two types of connecting yarns 31 of the liquid-absorbing layer 3, and the specification of the first connecting yarn 31 is 25D / 1F; the specification of the second connecting yarn 31 is 120D / 36F, and the ratio of the two is 3:1. The guide component weighs 80gsm and has a thickness of 1.6mm.

[0056] Example 6

[0057] In Example 6 of the present application, the fineness of the first yarn on the first surface layer 1 is 200D, and the F number is 288, and the fineness of the second yarn is 200D, and the F number is 288; there are two types of connecting yarns 31 of the liquid-absorbing layer 3, and the specification of the first connecting yarn 31 is 25D / 1F; the specification of the second connecting yarn 31 is 120D / 36F, and the ratio of the two is 3:1. The guide component weighs 220gsm and has a thickness of 1.7mm.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flow guide component, characterized in that: The invention comprises a first surface layer (1) and a second surface layer (2) which are arranged in sequence from top to bottom, wherein a liquid absorption layer (3) is arranged between the first surface layer (1) and the second surface layer (2); the first surface layer (1) is provided with a flow guide port for liquid circulation, and the liquid absorption layer (3) comprises a plurality of densely distributed and spaced connecting yarns (31), wherein one end of each of the plurality of connecting yarns (31) is elastically connected to the first surface layer (1) and the other end is elastically connected to the second surface layer (2), and a storage cavity for storing liquid is formed between the plurality of connecting yarns (31).

2. A flow guiding member according to claim 1, characterized in that: The fineness of the connecting yarn (31) is 10-150D, and each connecting yarn (31) contains 1-144 first fiber filaments (311).

3. A flow guiding member according to claim 2, characterized in that: The connecting yarn (31) comprises a first monomer and a second monomer of different specifications, wherein the fineness of the first monomer is 10-150D, and the first monomer is composed of 1-144 of the first fiber filaments (311); the fineness of the second monomer is 50-150D, and the second monomer is composed of 24-144 of the first fiber filaments (311).

4. A flow guiding member according to claim 3, characterized in that: Each of the second monomers comprises an outer layer of yarn and the first fiber filaments (311) inside, and each of the first fiber filaments (311) is interwoven and twisted with each other; the outer layer of yarn is wrapped around the first fiber filaments (311); each of the first fiber filaments (311) is arranged obliquely relative to the first surface layer (1); and the angle between each of the first fiber filaments (311) and the first surface layer (1) is 25-75 degrees.

5. A flow guiding member according to claim 4, characterized in that: The ratio of the length of each connecting yarn (31) to the shortest distance between adjacent connecting yarns (31) is 0.6-15.

6. The flow guiding component according to claim 1, characterized in that: The first surface layer (1) is formed by interweaving a plurality of first yarns, and a flow guide port for liquid flow is formed on the first surface layer. The fineness of the first yarn is 20-200D, and the first yarn is composed of 1-288 second fiber filaments.

7. The flow guiding member according to claim 1, characterized in that: The second surface layer (2) is formed by interweaving a plurality of second yarns, the fineness of the second yarns is 20-200D, and the second yarns are composed of 1-288 second fiber filaments.

8. The flow guiding component according to claim 1, characterized in that: The thickness of the flow-guiding component is 0.5-6 mm; the gram weight of the flow-guiding component is 60-350 gsm.

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