Method of production of nonwoven fabric perforated without physical or thermal deformation and absorbing article having such nonwoven fabric

IPC classes for russian patent Method of production of nonwoven fabric perforated without physical or thermal deformation and absorbing article having such nonwoven fabric (RU 2509182):

D04H13/00 - Other non-woven fabrics

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Multilayer sorption nonwoven material with fire-resistant membrane-fabric layer consists of 1-5 homogeneous or heterogeneous internal layers of nonwoven highly porous material from fibres filled with solid sorption particles on the basis of polyacrylonitrile or its mixture with polyurethane. The filler of sorption layers from nonwoven highly porous material is represented by solid particles of activated carbon, cationite or anionite with particle size below 6 mcm, arranged in the volume of nonwoven highly porous material in amount of 38-64 wt %. Sorption layers of the material are reinforced with adhesion of external coating and internal underlying woven reinforcement layers at two sides of sorption layers, and reinforcement layers are made of viscose-lavsan foundation fabric on the basis of a high-strength polyester fibre, containing 25-35 wt % of viscose fibre. For adhesion an adhesive powder composition is used on the basis of ethylene copolymer, containing the following amounts per 100 mass parts of ethylene copolymer - 17-21% vinyl acetate and 0.0144-0.0176 mass portions of highly dispersed hydrophobous noncompacted silicon dioxide. The material is additionally equipped at the side of its external coating woven reinforcing layer with a fire-resistant membrane-fabric material made as double-layer from the internal membrane layer adjacent to the surface of the external coating woven reinforcement layer and the external fire-resistant layer. The ratio of the internal membrane layer thickness in the fire-resistant membrane-fabric material to the thickness of its external fire-resistant layer is selected from 0.2 to 3.0. The inner membrane layer of the material is made with pore size of 0.15-0.65 mcm from copolymer of polyvinyl chloride with 22-32 wt % of tetrafluoroethylene. The material of the membrane layer has steam-, air permeability at 36°C making 50-86 g/m² hour, water resisting property of 1.7-1.8 kgf/cm², bubble point of 0.4 - 0.6 kgf/cm and surface density of 20-118 g/m². The external fire-resistant layer is made with linear density of 38 tex, rupture load of 100-2000 N and rupture elongation of 3.9-4.5% of a double-component combined thread, the first component of which in the form of a rod represents an aramide complex thread or yarn with linear density of 6.3-14.3 tex, and the second component of the combined thread in the form of the rod braiding with number of turns equal to 600-900 twists/m represents cellulose-containing threads or yarn with linear density of 10-30 tex. The aramide thread or year uses polyparaphenylene terephthalamide, polymetaphenylene terephthalamide, copolyparaphenylene tetephthalamide or copolyparaphenylenebenzimidazole terephthalamide fibres with oxygen index of more than 30, and the cellulose-containing thread or year is a modified fire-resistant viscose thread or yarn. The external layer fabric is made by the main weaving with surface density of 150-200 g/m² at the following ratio of components, wt %: aramide thread 15-50, cellulose-containing thread or yarn 50-85.

High-strength light nonwoven fabric from spunbonded web, method of its production and its application / 2415208

High-strength light nonwoven fabric from spunbonded nonwoven web, containing at least one layer of synthetic threads moulded from melt and strengthened with water jets of high energy. Besides, nonwoven fabric contains heat-activated binder applied in the form of at least one thin layer onto a layer of threads moulded from melt.

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FIELD: textiles, paper.

SUBSTANCE: absorbing article according to the present invention comprises the following elements: a liquid-permeable upper sheet; a liquid-tight lower sheet; an absorbing element located between the upper sheet and the lower sheet for absorbing liquid, permeating through the upper sheet, and a receiving layer located between the upper sheet and the absorbing element for supplying liquid penetrating through the upper sheet to the absorbing element. The receiving layer comprises a nonwoven fabric perforated without physical or thermal deformation.

EFFECT: invention provides a method of production of nonwoven fabric, perforated without physical or thermal deformation, and an absorbing article comprising such nonwoven fabric.

24 cl, 8 dwg

The technical FIELD

The invention relates to a method of manufacturing non-woven cloth, perforated without physical or thermal deformation and absorbent products having a non-woven fabric. More specifically, the present invention relates to absorbent products such as diapers, sanitary pad for women, strip, etc. that has a non-woven fabric, perforated without physical or thermal deformation, thus allowing rapid capture of large amounts of fluid, secreted by the body of the user and easy delivery to the absorbent element.

The LEVEL of TECHNOLOGY

One example of a conventional absorbent product shown in figure 1. Referring to Figure 1, a traditional absorbent article 10 includes: permeable to fluid top sheet 2 from the side of the body; impervious to liquids lower sheet 4 from the outside; an absorbent element 6 located between the top sheet 2 and the bottom sheet 4; and the receiving layer 8 located between the top sheet 2 and the absorbent element 6.

The top sheet 2 may come in contact with the skin of the user. The top sheet 2 is used to provide soft, so that the user feels comfortable while wearing the product. Absorbent element 6 serves for rapid absorption of fluids from the body of the user, through the top Sheet2 to accommodate the liquid. Absorbent element 6 can be made from pulp fibers or fibers of the pulp, mixed with ultrametabolism particles. The bottom sheet 4 is located under the absorbent element 6. The bottom sheet 4 may be made of an impermeable for the liquid film material, so that the liquid held within the absorbent element 6 is not released to the outside.

The receiving layer 8 serves for quick absorption of liquid and absorbed delivery of fluid to the absorbent element to prevent, therefore, the hydration of the skin of the user. For this purpose, the receiving layer 8 may consist of a nonwoven fabric having a low density of fibers and greater volume. However, for the production of such a receiving layer requires materials with high weight basis, which leads to higher costs of production. The receiving layer 8 may consist of a perforated non-woven cloth, in order to maintain or improve its functionality, while reducing its production cost.

In accordance with the prior art receiving layer consists of a perforated non-woven cloth. Such non-woven fabric can be produced by physically cutting out the section of the sheet of connected fibers by means of a cutting device (for example, a punch or punching of the sheet from the United fibers through a heated is of TERENA. As another example, such non-woven fabric may have a perforation when passing between a single roller with the tabs on it and the other roller configured to match him. Thus, the perforated non-woven fabric can be deformed due to physical or thermal pressure applied in the process of perforation. Accordingly, there is a problem in that the density non-woven cloth, as well as the density of the fibers around the perforation increases (however, the volume decreases). Also there is another problem in that the physical or thermal pressure in the perforation process causes damage to the fibers and the rigidity of the receiving layer.

BRIEF description of the INVENTION

Technical problem

The present invention aims at solving the following problems. The present invention provides a method for the production of nonwovens, in which perforined non-woven fabric without the application of physical or thermal pressure to the nonwoven fabric, thus preventing the increase of the density of the fibers of the nonwoven fabric and reducing damage to the fibers, thus increasing the softness of the receiving layer. The present invention also provides an absorbent article having a nonwoven fabric.

TECHNICAL SOLUTION

The non-woven fabric, perforirovannoi physical or thermal deformation in accordance with one implementation of the present invention, can be produced through the following stages: mixing fibers; open mixed fibers, carding open fibers; perforation kadavanich fibers without physical or thermal deformation; connection perforated fibers; and final treatment of the United fibers.

Preferably, the perforation may provide periodic ejection of air in the direction kadavanich fibers with a given pressure, with the formation of perforation and expulsion kadavanich fibers around the perforation.

Preferably, the perforation can be carried out simultaneously with caracasana. In this case, open the fibers can be cardowan on the conveyor with the tabs on it with the formation of the perforated cloth. The connection may provide for the application of air to a set pressure or pressure caused by varying degrees of contact with the top and/or bottom side of the canvas.

Another object of the present invention the absorbent product in accordance with one variant may contain the following elements: permeable to fluid top sheet; impervious to liquids lower sheet; an absorbent element located between the top sheet and the bottom sheet to absorb the liquid passing through the top sheet and the receiving layer, located m is waiting for a top sheet and an absorbent element for the fluid, passing through the top sheet to the absorbent element. The receiving layer may include non-woven, perforated, without physical or thermal deformation.

Absorbent product in accordance with another variant of implementation of the present invention may contain the following elements: permeable to fluid top sheet; impervious to liquids lower sheet; an absorbent element located between the top sheet and the bottom sheet to absorb the liquid passing through the top sheet and the receiving layer located between the top sheet and an absorbent element for the fluid passing through the top sheet to the absorbent element. The top sheet may include non-woven, perforated, without physical or thermal deformation.

Absorbent product in accordance with another alternative implementation of the present invention may contain the following elements: permeable to fluid top sheet that is impermeable to liquids lower sheet, an absorbent element located between the top sheet and the bottom sheet to absorb the liquid passing through the top sheet and the receiving layer located between the top sheet and an absorbent element for the fluid passing through the top sheet to the absorbent element. The receiving layer may include a laminate, in which the cancel non-woven fabric, perforated without physical or thermal deformation and non-perforated non-woven fabric, laminated on its upper and/or lower side.

In one embodiment, preferably, the total area of the perforations may be in the range of 5~80% of the total area of the nonwoven fabric. Preferably the diameter of the perforations may be in the range of 2~30 mm, More preferably, the diameter of the perforations may be in the range of 5~10 mm, Preferably, the basis weight of the perforated non-woven cloth can be in the range of 20~400 g/m².

In accordance with the method of production of nonwoven fabric of the present invention the perforations can be formed in the nonwoven fabric without physical or thermal deformation, thus preventing the increase of the density of the fibers around the perforation and reducing stiffness caused by this increase. Accordingly, the user can feel the softness, when such non-woven fabric is applied to the skin of the user.

In addition, since the non-woven fabric can be produced with low density and increased volume of voids, non-woven fabric can quickly transfer fluid discharged from the user's body to the absorbent element.

Also the non-woven fabric may be made so as to have the same thickness as the non-perforated non-woven fabric, even when IP is the use of a small number of fibers. That is, the non-woven fabric may be made so as to have the same thickness as the non-perforated non-woven fabric, despite the use of material with low weight basis, resulting in lower manufacturing costs.

When the perforation is large enough, the top sheet may be pressed partially into the perforations, thereby reducing the contact area between the top sheet and the skin of the user. Also, the distance between the top sheet and the absorbent element is reduced by means of perforation. Essentially, the absorbing member can absorb the moisture contained in the upper sheet by capillary phenomena. Thus, the reduction of the contact area between the top sheet and the skin of the user, as well as reducing the moisture contained inside the upper sheet, allow the top sheet of absorbent products to be supported in the free from moisture condition.

If the ratio of the perforations to the non-woven cloth is high, perforated non-woven fabric may be weakened intensity and prone to deformation in the process of punching. In this respect, the perforated non-woven fabric, which may be provided with non-perforated non-woven fabric may be laminated on the upper or lower side of the perforated non-woven cloth, while maintaining a high ratio of perforations to the non-woven cloth, without reducing the intensity of the non-woven cloth.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 is a view in cross section showing one example of a conventional absorbent products.

Figure 2 is a perspective view showing one example of an absorbent product in accordance with one implementation of the present invention.

Figure 3 is a view in cross section along III-III of figure 2.

4 is a perspective view showing the non-woven fabric for use in an absorbent product in accordance with one implementation of the present invention.

5 is a schematic view showing the process of perforation after carding process.

6 is a magnified view of the area marked by the letter "A" in Figure 5.

7 is a schematic view showing how Carduus open the fiber at their perforation.

Fig is a view in section, along the line D-D in Fig.7.

An embodiment of the INVENTION

Below is presented a more detailed description concerning the method of production of non-woven cloth, perforated without physical or thermal deformation and absorbent products having a non-woven fabric in accordance with the variants of implementation of the present invention.

Figure 2 shows a view in perspective showing one example of an absorbent product in accordance with one implementation of the present invention. Feels a view in cross-section, taken along the line III-III of figure 2. Figure 4 is a perspective view of a nonwoven fabric for use ox absorbent product in accordance with one implementation of the present invention.

Referring to Figure 2 and 3, the absorbent article 100, which is performed in accordance with one implementation of the present invention includes the following elements: a top sheet for the passage of fluid or excrement allocated by the user's body through it; absorbing element 130, which contains the liquid from the upper sheet 110; the lower sheet 120, located under the absorbent element 130 to prevent leakage to the outside of the liquid contained within the absorbent element 130; and the receiving layer 115 located between top plate 110 and the absorbing element 130 for fast delivery of fluid passing through the top sheet 110, absorbent element 130. As shown in figure 2, when the absorbent article 100 is used as a diaper, an absorbent article 100 may further include an elastic element 150 to wrap around the baby's legs and waist belt 160 for embracing the waist of the child.

The top sheet 110 (which may be referred to as "lining" in the prior art) is in direct contact with the skin of the user. The top sheet 110 allows fluids from the body of the user about whom the contain through it and then quickly move on to the absorbent element 130. Thus, for the top sheet, it is preferable to have the wettability, hydrophilicity and porosity. Preferably, the top sheet 110 can be made of nonwoven material that has a relatively low density and is large in size. Materials nonwoven fabric may contain one type of fibers, such as polyester or polypropylene, or composite bicomponent fibers having a component with a low melting point and a component with a high melting point. For example, the fibers may include nylon, polyester, cotton, acrylic fiber, etc. or combinations thereof. Bicomponent fiber may consist of a polyester core and a polyethylene sheath.

Absorbent element 130 is located between top plate 110 and bottom sheet 140 for quick absorption and retention of liquid in it. In General, the absorbent element 130 should be compressive, pliable and not irritating the skin of the user. For example, the absorbent element 130 can be made from pulp fibers or fibers of the pulp, mixed with ultra absorbent particles.

The bottom sheet 140 is located below the absorbent element 130. The bottom sheet 140 may be made of an impermeable for liquid polyethylene film such that the liquid is captured absorbing element 130, is not released to the outside, smearing or C is Gryaznaya underwear of the user.

The receiving layer 115 is located between top plate 110 and the absorbing element 130. The receiving layer 115 serves for quick absorption of liquid passing through the top sheet and the delivery of absorbed liquid to the absorbent element 130 to prevent absorbed liquid to the skin of the user. The receiving layer 115 may be connected cardovan canvas or linen, air laid, made of natural and/or synthetic fibers. United cordovano canvas can be, for example, the United powder cardovan blade connected using infrared technology cardovan canvas or cardovan canvas connected in end-to-end air flow (TABCW).

To increase the speed of absorption of the receiving layer 115 and enhance its soft, non-woven fabric 120, perforated without physical or thermal deformation in accordance with one implementation of the present invention can be used as a receiving layer 115.

In another embodiment, the non-woven fabric 120, perforated without physical or thermal deformation, in accordance with one implementation of the present invention may be used as the top sheet 110.

In another embodiment, the non-woven fabric 120, perforated without physical or Ter the systematic deformation in accordance with one implementation of the present invention, can be used as a receiving layer 115 in the form of a laminate, in which non-perforated non-woven fabric laminated to the nonwoven fabric 120. In this case, non-perforated non-woven fabric can be positioned between the top sheet 110 and a perforated nonwoven 120 or between the perforated nonwoven 120 and the absorbent element 130. Non-perforated non-woven fabric may include a spunbond fabric production, United cordovano cloth, air laid fabric, joined in end-to-end air flow cordovano cloth and so on, but is not limited to them. Preferably the basis weight non-perforated non-woven cloth can be in the range of 10~30 m².

The top sheet 110, the non-woven fabric 120 absorbing element 130 and the bottom sheet 140 can be assembled in various well-known forms of absorbent products using traditional techniques known in this field. For example, the above components may be connected to each other using heat or ultrasonic, adhesive hot melt, and combinations thereof or any other suitable means of attachment.

Figure 4 presents a perspective view showing the non-woven fabric, perforated without physical or thermal deformation in the CE is accordance with one implementation of the present invention. As shown in figure 4, many of perforations formed or formed in the sheet 121 nonwoven fabric 120. In one embodiment, the non-woven fabric 120 can be made through the following stages: mixing of fibers, the opening of mixed fibers, carding open fibers; perforation kadavanich fibers without physical or thermal deformation; the connection of perforated fibers; and the final treatment of the United fibers.

Stage, such as blending, opening, carding, the connection and end the processing can be carried out in accordance with conventional technologies known in this field.

Preferably the total area of the perforations may be in the range of 5~80% of the total area of the nonwoven fabric. Preferably the diameter of the perforations may be in the range of 2~30 mm, More preferably, especially in the sense of time absorbed, the diameter of the perforations may be in the range of 5~10 mm, Preferably, the basis weight of the perforated non-woven cloth can be in the range of 20~400 g/m².

Figure 5 schematically shows the process of perforation after carding process. Figure 6 shows an enlarged view of the area denoted by the letter "A" in figure 5.

Referring to Figure 5 and 6, in one embodiment, the non-woven fabric 120 may be perforated by blowing or ejection who is an ear in the direction kadavanich fibers under a given pressure of air downstream of the carding process. Blowing or the ejection of air may be intermittent or continuously for a specified period of time. In one embodiment, the perforation kadavanich fibers a air tube 170 can be placed or installed perpendicular to the plane of the sheet 121 kadavanich fibers a. If the air ejection or blow out air tube in the direction of sheet 121 of kadavanich fibers, the part that hits the ejected air is forced or blown out with the formation or the formation of perforations or holes a. However, before the process of connecting perforation or hole a formed in the sheet 121 of kadavanich fibers a. Then, if the connection process is carried out, perforation 122 formed or formed in the nonwoven fabric, as shown in Figure 4.

In another embodiment, the process of punching and the carding process can be carried out simultaneously so as to form a perforated non-woven fabric, as shown in Fig.7 and 8. 7 schematically shows that the open fiber is subjected to carlocasino when perforations or holes formed in them. On Fig presents a view in section, taken along the line D-D in Fig.7. As shown in Fig.7 and 8, the perforated non-woven fabric can be produced in such a way that open the s fiber cardowan on the conveyor for carding 180 with projections or pins 181 on it. These protrusions or pins may have a circular or polygonal cross-section or conical shape. As can more clearly be seen on Fig when open fiber Carduus on the conveyor for carding 180, perforations, such as perforations a shown in Fig.6, are formed in the sheet of kadavanich fibers 121b through protrusions 181, perforating it. After completion of this process of carding, the connection process can be carried out in such a way that the specified air pressure or variable contact pressure applied to the upper side and/or bottom side of a sheet of kadavanich fibers 12lb. In this connection the perforations 122, which correspond to the protrusions 181 conveyor for carding 180 in shape and size, can be formed in the nonwoven fabric 120, as shown in Figure 4.

In accordance with the above-described process of perforation, no loss of fibers during production of the nonwoven fabric 120. Also, no deformation caused by the physical or thermal pressure.

The above-described embodiments of the process of perforation is provided only for illustrative purposes and are not intended to limit the present invention to a specific process, as described here. The non-woven fabric may be perforated various other ways that do not cause the Fund is rmacie due to physical or thermal pressure.

In Table 1, below, shows that the values of thickness and density in non-perforated non-woven cloths and non-woven cloths, perforated by the ejection of air in accordance with one implementation of the present invention.

Table 1
	Code	Code Q	Code F
Thickness (mm)	1,87	1,69	to 1.86
Density (g/m²)	0,043	0,041	0,037

Code: non-Woven fabric of TABCW material (80 g/m²no perforations)

Code G: non-Woven fabric of TABCW material (70 g/m²no perforations)

Code F: non-Woven fabric of TABCW material (70 g/m², perforated by the ejection of air)

As shown in Table 1, if the basis weight of nonwoven fabric is reduced under the same conditions (for example, a comparison between Code s and code G), the density decreases and the thickness becomes smaller. However, perforated non-woven fabric (Code F) in accordance with the present invention has the thickness almost equal to the thickness of Code and density, even smaller than the Code, despite the use of materials with a weight basis, less than the code Strome, perforated non-woven fabric (Code F) in accordance with the present invention has a thickness greater than the code G and the density is still lower than the G code, despite the use of materials with the same weight basis, as the code G. Therefore, the perforated non-woven fabric (Code F) in accordance with the present invention may thicken, and its density to decrease, despite the use of materials with a weight basis, less than the code and the code of G, thus reducing the use of raw materials.

Table 2 below shows the experimental results of the velocity of the liquid is absorbed and the amount of evaporated moisture (g/s/m²) absorbent products using the receiving layer of non-woven fabric, in which only the receiving layer is excellent, and any other components, in addition to the receiving layer, are the same.

Table 2
	Code C	Code F
The first time absorption (sec)	19,08	17,08
The second absorbtion time (sec)	24,92	20,60
The third absorbtion time (sec)	26,72	23,42
The amount of evaporated moisture (g/s/m²)	21,87	18,59

Code C: Absorbent product comprising receiving layer of TABCW material (80 g/m²no perforations)

Code F: Absorbent product comprising receiving layer of TABCW material (70 g/K², perforated by the ejection of air)

As shown in Table 2, the time of absorption of the absorbent product, comprising a perforated non-woven fabric (Code F) is reduced by from about 10 to about 17% compared to the absorbent product Code C. in Addition, the amount of evaporated moisture absorbent products including perforated non-woven material (Code F) increases by about 15% compared to the absorbent product Code C. Thus, the absorbent product in accordance with the present invention can quickly absorb the liquid excreted from the body of the user and, moreover, to have a significant amount of evaporated moisture in second, with the remaining free of moisture for a long time.

the hile the present invention, particularly described and shown with reference to exemplary embodiments his execution, the person skilled in the art will understand that various changes or modifications may be made without departing from the scope of the present invention.

1. Method of manufacturing non-woven cloth, perforated without physical or thermal deformation, including:
mixing fibers;
open mixed fibres;
carding open fibers;
perforation kadavanich fibers without physical or thermal deformation;
connection perforated fibers; and
the final treatment of the United fibers.

2. The method according to claim 1, in which the perforation provides intermittent ejection of air in the direction kadavanich fibers with a given pressure with the formation of perforation and expulsion kadavanich fibers around the perforation.

3. The method according to claim 1, in which the carding and perforation takes place simultaneously so that the opened fibers are carlocasino on the conveyor for carding with the tabs on it with the formation of perforated fabric, and in this connection provides for the application of the specified air pressure or variable pressure to the upper side and/or bottom side of the canvas.

4. The non-woven fabric, perforated without physical or mention eskay deformation, which is produced by the method according to any one of claims 1 to 3.

5. The non-woven fabric according to claim 4, in which the total area of the perforations is in the range of 5~80% of the total area of non-woven cloth.

6. The non-woven fabric according to claim 4, in which the diameter of the perforations is in the range of 2~30 mm

7. The non-woven fabric according to claim 6, in which the diameter of the perforations is in the range of 5~10 mm

8. The non-woven fabric according to claim 4, in which the basis weight of the perforated nonwoven fabric is in the range of 20~400 g/m².

9. Absorbent article containing:
permeable to fluid top sheet;
impervious to liquids lower sheet;
absorbent element located between the top sheet and bottom sheet for absorbing liquid penetrating through the top sheet; and
the receiving layer located between the top sheet and an absorbent element for the fluid coming through the top sheet to the absorbent element, and the receiving layer comprises non-woven, perforated, without physical or thermal deformation according to claim 4.

10. Absorbent product according to claim 9, in which the total area of the perforations is in the range of 5~80% of the total area of non-woven cloth.

11. Absorbent product according to claim 9, in which the diameter of the perforations is in the range of 2~30 mm

12. Absorbent product according to claim 11, in which the diameter of the perforation is diapazone~10 mm

13. Absorbent product according to claim 9, in which the basis weight of the perforated nonwoven fabric is in the range of 20~400 g/m².

14. Absorbent article containing:
permeable to fluid top sheet;
impervious to liquids lower sheet;
absorbent element located between the top sheet and bottom sheet for absorbing liquid penetrating through the top sheet; and
the receiving layer located between the top sheet and an absorbent element for the fluid coming through the top sheet, an absorbent element, and the receiving layer includes a laminate that includes a nonwoven fabric, perforated without physical or thermal deformation according to claim 4 and non-perforated non-woven fabric, laminated on him.

15. Absorbent product according to 14, in which the total area of the perforations is in the range of 5~80% of the total area of non-woven cloth.

16. Absorbent product according to 14, in which the diameter of the perforations is in the range of 2~30 mm

17. Absorbent product according to clause 16, in which the diameter of the perforations is in the range of 5~10 mm

18. Absorbent product according to 14, in which the basis weight of the perforated nonwoven fabric is in the range of 20~400 g/m².

19. Absorbent product according to 14, in which the basis weight non-perforated non-woven cloth is in the range of 10~30 g/is ².

20. Absorbent article containing:
permeable to fluid top sheet;
impervious to liquids lower sheet;
absorbent element located between the top sheet and bottom sheet for absorbing liquid penetrating through the top sheet; and
the receiving layer located between the top sheet and an absorbent element for the fluid coming through the top sheet, an absorbent element, and the top sheet includes a non-woven fabric, perforated without physical or thermal deformation according to claim 4.

21. Absorbent product according to claim 20, in which the total area of the perforations is in the range of 5~80% of the total area of non-woven cloth.

22. Absorbent product according to claim 20, in which the diameter of the perforations is in the range of 2~30 mm

23. Absorbent product according to item 22, in which the diameter of the perforations is in the range of 5~10 mm

24. Absorbent product according to claim 20, in which the basis weight of the perforated nonwoven fabric is in the range of 20~400 g/m².