CN219700332U

CN219700332U - Sanitary towel

Info

Publication number: CN219700332U
Application number: CN202320013100.2U
Authority: CN
Inventors: 唐子杰; 孙婷; 魏文闵; 纪华; 时小龙
Original assignee: Robust Medical Wuhan Co ltd
Current assignee: Robust Medical Wuhan Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-09-19
Anticipated expiration: 2033-01-04

Abstract

The utility model discloses a sanitary towel, which comprises a bottom film, a point-surface permeable core, a diversion layer and a surface layer which are sequentially overlapped from bottom to top, wherein both sides of the bottom film are provided with protective wings, the surface layer is made of an all-cotton material and is hydrophilic, the upper surface of the surface layer is provided with hydrophobic areas and hydrophilic areas which are alternately distributed and are strip-shaped, the upper surface of the hydrophobic areas is higher than the upper surface of the hydrophilic areas by alternately distributing the hydrophobic areas and the hydrophilic areas on the surface layer, and the diversion layer is hydrophilic, so that the hydrophobic areas (compared with the hydrophilic areas) on the upper surface of the surface layer are more hydrophilic, the dryness is good, and the downward sinking of the hydrophilic areas is also beneficial to diversion of liquid to the hydrophilic areas, so that the downward liquid guiding performance of the hydrophilic areas is also improved, and the dryness and the liquid absorbing performance of the sanitary towel are obviously improved.

Description

Sanitary towel

Technical Field

The utility model belongs to the field of sanitary products, and particularly relates to a sanitary towel.

Background

The full-cotton surface sanitary towel product has the characteristics of skin-friendly and comfortable performance when being interacted with skin, is deeply favored by consumers, liquid cannot be quickly infiltrated downwards under the condition of high humidity, is easy to infiltrate back, has poor dry and comfortable performance, brings wet and cool feeling to users, and has poor dry and comfortable performance because the document No. CN110393636A, a high-dry full-cotton surface sanitary towel, which is also made of full-cotton material, is also disclosed in a patent document of CN110393636A, and the surface of the sanitary towel is sprayed with finishing agent at intervals to form hydrophobic areas which are distributed at intervals on the upper surface of the surface layer and are strip-shaped (hydrophilic areas are arranged between two adjacent hydrophobic areas), but the level of the hydrophobic areas on the upper surface of the surface layer is consistent with that of the hydrophilic areas, so that the hydrophilic areas at the upper end of the surface layer are not different in skin-friendly performance, and the hydrophilic areas absorb liquid, and still bring wet and cool feeling when the hydrophilic areas are contacted with skin, so that the dry and comfortable performance is still insufficient, and the wet and comfortable performance are the wet and comfortable performance are still poor in the main-stream full-cotton surface sanitary towel on the market at present; the diversion layer is generally made of coarse denier fiber PP/PE hot air non-woven fabrics, has poor matching performance with the cotton surface layer, can not smoothly conduct water and has high reverse osmosis; the core body is a wood oar polymer core body, menstrual blood cannot be effectively conducted and diffused, and the absorption core body can generate the problems of deformation, fracture, hardness, agglomeration and the like.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide the sanitary towel which has simple structure, good water conductivity and good dryness.

In order to achieve the above object, the technical scheme of the present utility model is as follows: the utility model provides a sanitary towel, includes from bottom to top sequential coincide basement membrane, some face infiltration core, water conservancy diversion layer and surface course, just the both sides of basement membrane all are equipped with the flap, the surface course is cotton material component and it is hydrophilicity, the upper surface of surface course has alternate distribution and is the hydrophobicity area and the hydrophilicity area of bar, just the upper surface of hydrophobicity area is higher than the upper surface of hydrophilicity area, some face infiltration core is used for absorbing liquid, the water conservancy diversion layer is hydrophilicity, it is used for with the rapid to the diffusion of some face infiltration core upper surface of liquid absorption.

The beneficial effects of the technical scheme are that: the water absorption rate of the core body can be improved by adopting the point-surface permeation core body, the hydrophilic diversion layer is additionally arranged between the surface layer and the point-surface permeation core body, so that liquid absorbed by the surface layer can be rapidly diffused to the upper surface of the point-surface permeation core body to accelerate the absorption rate of the point-surface permeation core body, the surface layer is alternately distributed by the hydrophobic area and the hydrophilic area, the upper surface of the hydrophobic area is higher than the upper surface of the hydrophilic area, the hydrophobic area (compared with the hydrophilic area) on the upper surface of the surface layer is more hydrophilic, and when the sanitary towel is used, the sanitary towel can be folded downwards along the concave position at the upper end of the surface layer, the contact area between the hydrophilic area and the skin is smaller, and the skin-friendly performance of the hydrophobic area is further improved, so that the dryness performance is good, the concave downward hydrophilic area is also beneficial to diversion of the liquid to the hydrophilic area, and the performance of the downward diversion of the hydrophilic area can be improved, and the dryness and the liquid-absorbing performance of the sanitary towel can be obviously improved.

In the technical scheme, the surface layer is an all-cotton fabric with the gram weight of 30-50g/m ² 。

The beneficial effects of the technical scheme are that: the surface layer is a low gram weight surface layer, and is light, thin and comfortable.

In the above technical solution, the hydrophobic region and the hydrophilic region are integrally formed with the surface layer.

The beneficial effects of the technical scheme are that: so that the surface layer has a significantly different directional water guiding structure and better stability.

The point-surface permeable core in the technical scheme comprises a polyester-viscose composite spunlaced layer, an upper dust-free paper layer, a high-water-absorption layer, a wet-strength paper layer and a lower dust-free paper layer which are sequentially overlapped from top to bottom.

The beneficial effects of the technical scheme are that: the liquid absorption performance is good, and the liquid absorption amount is large.

In the technical scheme, the polyester-viscose composite spunlaced fabric layer is hydrophilic, and water permeable holes penetrating through the polyester-viscose composite spunlaced fabric layer are uniformly distributed on the polyester-viscose composite spunlaced fabric layer.

The beneficial effects of the technical scheme are that: through setting up to wash and glue compound water thorn cloth layer, can make liquid above that diffuse fast all around simultaneously downwards permeate for its infiltration area is bigger like this, reaches the multiple spot infiltration down, and sets up the hole that permeates water, can further improve to wash and glue compound water thorn cloth and permeate water's performance down to make the liquid of water conservancy diversion layer can be quick infiltration down.

In the technical scheme, the gram weight of the polyester-viscose composite spunlaced fabric layer is 30-50gsm, the gram weight of the upper dust-free paper layer is 50-90gsm, the gram weight of the high-water-absorption layer is 60-100gsm, the gram weight of the wet-strength paper layer is 8-15gsm, and the gram weight of the lower dust-free paper layer is 30-50gsm.

The beneficial effects of the technical scheme are that: through optimizing the gram weight of each layer structure of the point-surface permeation core body, in addition, the high water absorption layer is formed by mixing high water absorption resin (SAP) and fluff pulp, and the upper dust-free paper and the wet strength paper layer can protect the high water absorption layer and prevent the high water absorption resin from breaking due to liquid absorption transitional expansion, and the lower dust-free paper layer can further enable liquid absorbed by the high water absorption layer to diffuse downwards and lock liquid by the lower dust-free paper layer, so that the phenomenon of upward reverse osmosis liquid caused by extrusion due to overlarge liquid amount absorbed by the high water absorption layer is prevented.

In the technical scheme, the absorption speed of the super absorbent layer is less than 10 seconds.

The beneficial effects of the technical scheme are that: its liquid-sucking speed is high.

In the technical scheme, the lower dust-free paper layer is fully distributed with folds distributed along the length direction.

The beneficial effects of the technical scheme are that: therefore, the liquid absorption area of the lower dust-free paper layer is larger, so that more liquid can be absorbed, namely, the liquid locking performance is better.

In the technical scheme, the height of a single fold on the lower dust-free paper layer is 1-3mm, and the length of the single fold is 5-10cm.

The beneficial effects of the technical scheme are that: therefore, the thickness of the lower dust-free paper layer is small, the surface area is large, and meanwhile, the liquid locking performance is good.

Drawings

FIG. 1 is an exploded view of a sanitary napkin according to the present utility model;

FIG. 2 is a further exploded view of the sanitary napkin of the present utility model;

FIG. 3 is a schematic view showing the distribution of layers in the length direction of the bathroom according to the present utility model;

FIG. 4 is a cross-sectional view of the facing layer of the present utility model in the widthwise direction;

fig. 5 is a cross-sectional view of the lower dust-free paper layer in the width direction in the present utility model;

FIG. 6 is a cross-sectional view of a polyester bonded composite hydroentangled fabric layer according to the present utility model.

In the figure: 1 a bottom film, 11 a protective wing, 2-point surface permeation core bodies, 21 polyester-viscose composite spunlaced cloth layers, 211 water permeation holes, 22 upper dust-free paper layers, 23 high water absorption layers, 24 wet strength paper layers, 25 lower dust-free paper layers, 3 diversion layers, 4 surface layers, 41 hydrophobic areas and 42 hydrophilic areas.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

As shown in fig. 1 and 4, this embodiment provides a sanitary towel, which includes a bottom film 1, a point-surface permeable core 2, a diversion layer 3 and a surface layer 4 sequentially stacked from bottom to top, wherein both sides of the bottom film 1 are provided with protective wings 11, the surface layer 4 is made of all-cotton material and is hydrophilic, the upper surface of the surface layer is provided with hydrophobic areas 41 and hydrophilic areas 42 which are alternately distributed and are strip-shaped, the upper surface of the hydrophobic area 41 is higher than the upper surface of the hydrophilic area 42, the water absorption rate of the core can be improved by adopting the point-surface permeable core, and a hydrophilic diversion layer is additionally arranged between the surface layer and the point-surface permeable core to enable the liquid absorbed by the surface layer to rapidly diffuse to the upper surface of the point-surface permeable core so as to accelerate the absorption rate of the point-surface permeable core, the surface layer is alternately distributed by the hydrophobic area 41 and the hydrophilic area 42, the upper surface of the hydrophobic area 41 is higher than the upper surface of the hydrophilic area 42, the point-surface permeable core 2 is used for absorbing liquid, the diversion layer 3 is hydrophilic and is used for rapidly diffusing the liquid absorbed by the surface layer 4 to the upper surface of the point-surface permeable core 2, so that the hydrophobic area (compared with the hydrophilic area) on the upper surface of the surface layer is more skin-friendly, and when in use, the sanitary towel is downwards wrinkled along the concave part at the upper end of the surface layer, so that the contact area between the hydrophilic area and the skin is smaller, thereby further improving the skin-friendly performance of the hydrophobic area, the dryness is good, the downward concave part of the hydrophilic area is also beneficial to diversion of the liquid to the hydrophilic area, and the downward liquid-guiding performance of the hydrophilic area can be improved, thereby remarkably improving the dryness and the liquid absorption performance of the sanitary towel.

In the technical scheme, the surface layer 4 is an all-cotton fabric with the gram weight of 30-50gsm, and is a low-gram-weight surface layer, light, thin and comfortable.

In the above technical solution, the hydrophobic area 41 and the hydrophilic area 42 are integrally formed with the surface layer 4, so that the stability is better, and the adhesive is not needed.

As shown in fig. 2 and 3, the point-surface permeable core 2 in the above technical solution includes a polyester-viscose composite spunlaced layer 21, an upper dust-free paper layer 22, a super absorbent layer 23, a wet-strength paper layer 24 and a lower dust-free paper layer 25, which are sequentially stacked from top to bottom, and has good liquid absorption performance and large liquid absorption amount.

As shown in fig. 6, in the above technical solution, the polyester-viscose composite spunlaced fabric layer 21 is hydrophilic, and water permeable holes 211 penetrating the same are uniformly distributed on the polyester-viscose composite spunlaced fabric layer, so that the liquid can be rapidly diffused around the polyester-viscose composite spunlaced fabric layer and simultaneously permeate downwards, so that the permeation area is larger, and the water permeable holes are formed, so that the downward water permeable performance of the polyester-viscose composite spunlaced fabric can be further improved, and the liquid of the diversion layer can be rapidly permeated downwards.

In the above technical solution, the grammage of the polyester-viscose composite spunlaced fabric layer 21 is 30-50gsm, the grammage of the upper dust-free paper layer 22 is 50-90gsm, the grammage of the high water-absorbing layer 23 is 60-100gsm, the grammage of the wet-strength paper layer 24 is 8-15gsm, the grammage of the lower dust-free paper layer 25 is 30-50gsm, the grammage of the point-surface-permeated core structure is optimized, in addition, the high water-absorbing layer is formed by mixing super absorbent resin (SAP) and fluff pulp [ the mass ratio of the super absorbent resin (SAP) to the fluff pulp is 1:2-20], the upper dust-free paper layer and the wet-strength paper layer can protect the super absorbent layer, prevent the super absorbent resin from breaking due to liquid absorption transition expansion, and the lower dust-free paper layer can further enable liquid absorbed by the super absorbent layer to diffuse downwards and lock liquid by the lower dust-free paper layer, and prevent the phenomenon of upward reverse liquid due to extrusion.

The absorption speed of the high water absorption layer 23 in the technical scheme is less than 10 seconds, and the liquid absorption speed is large.

As shown in fig. 5, in the above technical solution, the lower dust-free paper layer 25 is fully distributed with folds distributed along the length direction thereof, so that the liquid absorption area of the lower dust-free paper layer is larger, and more liquid can be absorbed, i.e. the liquid locking performance is better.

In the above technical solution, the height of a single fold on the lower dust-free paper layer 25 is 1-3mm, and the length of the single fold is 5-10cm, so that the thickness of the lower dust-free paper layer is small, the surface area is large, and the liquid locking performance is good.

The preparation method of the surface layer can be as follows: the gram weight is 30 to 50g/m ² The hydrophilic all-cotton spunlaced fabric is processed by adopting jacquard drum spunlacing, namely concave strip-shaped areas with interval distribution and downward concave upper surface are formed on the upper surface of the hydrophilic all-cotton spunlaced fabric by the jacquard drum spunlacing, a raised strip-shaped area is formed between two adjacent concave strip-shaped areas, and finishing agents are sprayed in an atomization mode on the raised strip-shaped areas (the finishing agent solution is prepared by adjusting the pH value of deionized water to be weak acid, adding a hydrophobic finishing agent and fully and uniformly mixing, wherein the hydrophobic finishing agent is an aliphatic water repellent finishing agent which does not contain alkylphenol ethoxylates, organic halides and fluorocarbon, and the concentration of the finishing agent solution is 2-20wt%) so that the upper surface of the raised strip-shaped area is hydrophobic, and the lower layer of the raised strip-shaped area is hydrophilic (the lower layer of the surface layer still keeps hydrophilic).

The diversion layer adopts an ES hot air fiber with a PP (high polymer polypropylene)/PE (polyethylene) sheath-core structure or a PP (high polymer polypropylene)/PET (polyethylene terephthalate plastic) sheath-core structure, and comprises two fiber fineness, wherein the coarse denier fiber fineness is 10-200 denier, and the fine denier fiber fineness is 1-100 denier, and the two fineness fibers adopt a hot air reinforcement process to enable the skin layers to be connected to form the diversion layer.

The preparation process of the polyester-viscose composite spunlaced fabric layer (the mesh number of the water permeable holes of the polyester-viscose composite spunlaced fabric layer is 8-20 meshes) comprises the following steps: carding polyester fiber and viscose fiber respectively, wherein the polyester fiber and the viscose fiber are respectively in a parallel lapping mode to obtain a polyester fiber net and a viscose fiber net, and the gram weight ratio of the polyester fiber to the viscose fiber can be 1:2-3; the carded polyester fiber net and the viscose fiber net are overlapped in a parallel mode, and are subjected to positive and negative hydroentanglement compounding by adopting a hydroentanglement process. The hydro-entangled process adopts a hydro-entangled process combining a flat net and a rotary drum, and the rotary drum is provided with circular meshes (meshes on the rotary drum are used for processing water permeable holes on the polyester-viscose composite hydro-entangled cloth layer). The polyester fiber is a hydrophilic material with a special-shaped cross section and a groove on the surface, the fineness is 5-10 denier, and the degree of special-shaped is 10-40%; the viscose fiber is 1-5 denier.

The compounding method of the polyester-viscose composite spunlaced fabric layer 21, the upper dust-free paper layer 22, the super absorbent layer 23, the wet strength paper layer 24, the lower dust-free paper layer 25 and the diversion layer 3 in the embodiment is as follows: the polyester-viscose composite spunlaced fabric layer and the diversion layer are compounded into a composite material A through hot melt adhesive; the dust-free paper layer 22, the super absorbent layer 23 and the wet strength paper layer 24 are sprayed and compounded together through hot melt adhesive to form a composite material B; the lower dust-free paper layer is material C. Compounding the composite material A and the composite material B by hot melt adhesive, compounding by adopting a partition scraping mode, scraping strip-shaped bonding points at the left, middle and right positions of the composite material B along the longitudinal direction, extruding a product obtained after the composite material A and the composite material B are compounded by using an extruding mechanism of an optical roller to an optical roller, and discharging redundant air to shape the product; the obtained product and the material C are subjected to hot-melt adhesive spraying and compounding to form the core material of the sanitary towel with the integral structure.

In this embodiment, the longitudinal direction or the longitudinal direction refers to the longitudinal direction of the sanitary napkin, and the transverse direction or the width direction refers to the width direction of the sanitary napkin.

Example 1

The surface layer, the diversion layer and the point-surface permeation core body 2 are sequentially subjected to compound processing from top to bottom to form an upper layer compound body; the lower part of the upper layer complex is sequentially compounded with a bottom film and release paper to form the sanitary towel main body. The surface layer has a gram weight of 30gsm, the diversion layer has a gram weight of 30gsm, the polyester-viscose composite spunlaced layer 21 has a gram weight of 30gsm, and the mesh is 20 meshes; the upper dust-free paper layer 22, the high water absorption layer 23 and the wet strength paper layer 24 are compounded together through hot melt adhesive spraying to form a composite material with the total gram weight of 130gsm; the lower dust-free paper layer 25 had a grammage of 30gsm.

Example 2

The difference from example 1 is that the total grammage of the point face penetrating core is 180gsm, the grammage of the polyester-viscose composite spunlace layer 21 is 30gsm, and the mesh is 20 mesh; the upper dust-free paper layer 22, the high water absorption layer 23 and the wet strength paper layer 24 are compounded together through hot melt adhesive spraying to form a composite material with the total gram weight of 130gsm; the lower dust-free paper layer 25 had a grammage of 20gsm.

Example 3

The difference from example 1 is that the total grammage of the point face penetrating core is 180gsm, the grammage of the polyester-viscose composite spunlace layer 21 is 30gsm, and the mesh is 10 mesh; the upper dust-free paper layer 22, the high water absorption layer 23 and the wet strength paper layer 24 are compounded together through hot melt adhesive spraying to form a composite material with the total gram weight of 130gsm; the lower dust-free paper layer 25 had a grammage of 20gsm.

The results of comparing the corresponding all cotton sanitary towel products of examples 1-3 with the products of the common 2-style all cotton period sanitary towel on the market are shown in the following table 1. Examples 1-3 are compared with two types of sanitary napkins of the cotton era (Shenzhen cotton era science and technology Co., ltd.), the surface layers of examples 1-3 are better in dryness, more liquid permeates into the core material of the sanitary napkin, and the liquid locking performance of the bottom of the core material is better, and the sanitary napkins provided in examples 1-3 are excellent in comfort and dryness.

Table 1 results of performance comparisons of examples and comparative examples

It should be noted that the foregoing detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

In the meantime, when an element is referred to as being "fixed to" another element, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures.

For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" may include both orientations of "above" and "below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way; those skilled in the art will readily appreciate that the present utility model may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present utility model are possible in light of the above teachings without departing from the scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the present utility model.

Claims

1. The utility model provides a sanitary towel, its characterized in that, including bottom membrane (1), some face infiltration core (2), water conservancy diversion layer (3) and surface course (4) of sequential coincide from bottom to top, just both sides of bottom membrane (1) all are equipped with flap (11), surface course (4) are cotton material component and are hydrophilic, the upper surface of surface course has alternate distribution and is hydrophobic region (41) and hydrophilic region (42) of bar, just the upper surface of hydrophobic region (41) is higher than the upper surface of hydrophilic region (42), some face infiltration core (2) are used for absorbing liquid, water conservancy diversion layer (3) are hydrophilic, it is used for with the liquid that surface course (4) absorbed to the quick diffusion of some face infiltration core (2) upper surface.

2. Sanitary napkin according to claim 1, wherein the facing layer (4) is an all-cotton fabric having a grammage of 30-50g/m ² 。

3. Sanitary napkin according to claim 1, wherein the hydrophobic (41) and hydrophilic (42) regions are each integrally formed with the facing layer (4).

4. Sanitary napkin according to claim 1, wherein the point-and-face permeable core (2) comprises a polyester-bonded composite hydroentangled layer (21), an upper dust free paper layer (22), a super absorbent layer (23), a wet strength paper layer (24) and a lower dust free paper layer (25) laminated in this order from top to bottom.

5. Sanitary napkin according to claim 4, wherein the polyester-bonded composite spunlaced layer (21) is hydrophilic and has water-permeable holes (211) uniformly distributed therethrough.

6. Sanitary napkin according to claim 4, wherein the polyester bonded composite hydroentangled layer (21) has a grammage of 30-50gsm, the upper dust free paper layer (22) has a grammage of 50-90gsm, the superabsorbent layer (23) has a grammage of 60-100gsm, the wet strength paper layer (24) has a grammage of 8-15gsm and the lower dust free paper layer (25) has a grammage of 30-50gsm.

7. Sanitary napkin according to claim 4, wherein the high absorbent layer (23) has an absorption rate of < 10 seconds.

8. Sanitary napkin according to claim 4, wherein the lower dust-free paper layer (25) is provided with folds distributed along its length.

9. Sanitary napkin according to claim 8, wherein the height of the individual folds on the lower dust-free paper layer (25) is 1-3mm and the length of the individual folds is 5-10cm.