RU2445410C2 - Profiled sheet and absorbing article incorporating said sheet - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: profiled sheet made from fibers comprises multiple ledges, jointing sections and recesses made on its surface. Note here that said jointing sections make boundaries to joint said ledges together. Note also that said recesses are located between said ledges aside from jointing sections, i.e. six recesses around each ledge. Invention relates also to absorbing article incorporating said sheet.

EFFECT: higher efficiency of absorbing fluid.

17 cl, 19 dwg, 3 tbl

Description

[Technical Field]

The present invention relates to a profiled sheet and to an absorbent article in which a similar sheet is used.

[Prior art]

Profiled sheets are used in some absorbent products, such as sanitary napkins for everyday use panty liners and disposable diapers. For example, as a top sheet, a top sheet was disclosed in which hot stamping was performed on a sheet-like surface subjected to hydrophilicity, a nonwoven fabric made of bicomponent fibers to form protrusions and recesses on it, and in which portions of the surfaces of the protrusions tops are transformed into films, resulting in protrusions with a truncated cone shape (see Patent Document 1). In this top sheet, the protrusions are independent of each other, and the portions of the peaks of the protrusions are turned into films, which leads to a very high fiber density.

Furthermore, the joining of two sheets of nonwoven fabric together by means of a plurality of spaced embossing rod-like elements and the selective pulling of the lower sheet by thermal drying to separate the upper sheet to form a wave-like structure is thereby disclosed, thereby obtaining a top sheet (see Patent Document 2) . In addition, an absorbent article was disclosed which was provided with a liquid permeable sheet, a liquid impermeable surface, a back sheet and a liquid retaining element, an absorption element provided between the two sheets, and the surface of which is to be brought into contact with the skin has a knobby surface a zone (a zone with protrusions) in which a plurality of protrusions are formed at regular intervals. In addition, this absorbent article has a non-hilly zone in which protrusions are formed with a height shorter than that of the protrusions of the hilly zone, or in which no protrusions are formed (see Patent Document 3). In this absorbent article, the bumpy zone is formed by a laminate sheet in which the first layer located on the skin side and the second layer on the side of the absorbing element are stacked on top of each other, thereby forming a partial bonding of the two layers with a given pattern in the connected parts. In addition, many protrusions in the tuberous zone are formed by deforming a part of the first layer other than the connected part to form a convex configuration by compressing (contracting) the second layer. In the upper sheets of Patent Document 2 and Patent Document 3, protrusions and recesses of the upper layer are formed by tightening the lower layer so that the fiber density of the upper layer is uniform.

In addition, a top sheet was disclosed including a top sheet and a bottom sheet and having hollow protrusions, the lower parts of the protrusions being rectangular and the protrusions being generally formed as rectangular parallelepipeds or truncated quadrangular pyramids (see Patent Document 4).

[Patent Document 1] JP-A-11-347062 (“JP-A” means Japanese Unexamined Published Patent Application)

[Patent Document 2] JP-A-2002-165830

[Patent Document 3] JP-A-2003-275239

[Patent Document 4] JP-A-2004-174234

[Disclosure of invention]

The profiled sheet in accordance with the present invention has many protrusions on the side of one surface of the profiled sheet formed of fibers, and connecting sections for forming a barrier and connecting the protrusions with each other, while the connecting section has a higher fiber density compared to the density of the fibers protrusion.

In addition, the absorbent product in accordance with the present invention has a profiled sheet located adjacent to at least the area of selection, while its surface made with protrusions is directed to the side of the skin surface.

[Brief Description of Drawings]

[Figure 1]

FIG. 1 is a partially schematic perspective view of a main part of a top sheet in a profiled sheet in accordance with one embodiment (first embodiment) of the present invention.

[Figure 2]

Figure 2 is an enlarged section of a profiled sheet of figure 1, made along the line II-II.

[Figure 3]

Figure 3 is an enlarged section of a profiled sheet of figure 1, made along the line III-III.

[Figure 4]

Figure 4 is an enlarged section of a profiled sheet of figure 1, made along the line IV-IV.

[Figure 5]

5 is a pattern chart that shows a six-point embossing pattern in a coordinate system.

[Fig. 6-1]

6-1 is an explanatory view illustrating a process for illustrating a method for manufacturing a profiled sheet in accordance with one embodiment of the present invention.

[Fig.6-2]

6-2 is an explanatory view illustrating a process and intended to illustrate a method for manufacturing a profiled sheet in accordance with another embodiment.

[Fig.6-3]

6-3 is a schematic diagram illustrating the arrangement of the ends of the teeth when the teeth of the first drum and the second drum are engaged with each other.

[Fig.6-4]

Fig.6-4 is an enlarged schematic perspective view of the main part of the first drum in accordance with one embodiment.

[Fig.6-5]

Fig.6-5 is an enlarged schematic perspective view of the main part of the first drum in accordance with another embodiment.

[Fig.7]

FIG. 7 is a partially schematic perspective view of a top sheet in a profiled sheet in accordance with another embodiment (second embodiment) of the present invention.

[Fig. 8]

Fig. 8 is an enlarged section of zone VIII of the profiled sheet illustrated in Fig. 7.

[Fig.9]

Fig.9 is an enlarged section taken along line IX-IX of the profiled sheet illustrated in Fig.7.

[Figure 10]

Figure 10 is a map of the arrangement, which shows a four-point pattern of embossing in the coordinate system.

[Fig.11]

FIG. 11 is a partially schematic perspective view of a main part of a top sheet in accordance with one embodiment (third embodiment) of the present invention.

[Fig.12]

FIG. 12 is an enlarged perspective view of a zone XII and a zone near it in FIG. 11.

[Fig.13]

FIG. 13 is a sectional view showing an enlarged sectional view of a main part of a top sheet in a profiled sheet in accordance with yet another embodiment (fourth embodiment) of the present invention.

[Fig.14]

Fig. 14 is a partially exploded schematic perspective view of a disposable diaper that uses a shaped sheet in accordance with the present invention as a top sheet.

[Fig.15]

Fig is a map of the analysis of the surface configuration in the form of a perspective view, while the surface configuration of the top sheet (test material 2-1), prepared as an example, was subjected to measurements and visualization using a microscope for surface profilometry.

Other and further features and advantages of the invention will become more apparent from the description below, made with the corresponding references to the accompanying drawings.

[Detailed description of the invention]

In the following, preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

Figure 1 is a schematic perspective view of the main part of the upper sheet of an absorbent article, which is a profiled sheet in accordance with a preferred embodiment (first embodiment) of the present invention. Figure 2 is a section of a profiled sheet of figure 1, made along the line II-II. Figure 3 is a section of a profiled sheet of figure 1, made along the line III-III. Figure 4 is a section of a profiled sheet of figure 1, made along the line IV-IV. The focus of the following description of the profiled sheet of the present invention lies in the method of using the profiled sheet, with the surface of the top sheet illustrated in the drawings facing the surface of the carrier skin from the side of the top laminated sheet, but the invention should not be construed as limited thereto.

The upper sheet 10 in accordance with the first embodiment has an upper laminate sheet 1 and a lower laminate sheet 2. The upper sheet 10 is preferably used, for example, for an absorbent article such as a sanitary towel or disposable diaper. The top sheet 10 can be used together with an absorbent element (not shown) located on the side of the lower surface 2b of the lower laminate sheet 2, and the side of the upper surface 1a of the upper laminate sheet 1 will be applied directly to the skin of the carrier.

On the side of the upper laminated sheet 1 of the upper sheet 10 of the absorbent article according to the first embodiment, that is, on the side held in contact with the skin of the carrier, a plurality of protrusions 3 are arranged in a checkerboard pattern (zigzag). Any adjacent two protrusions 3 arranged in a checkerboard pattern are connected together by a connecting portion 5 intended to form a barrier (the first connecting portion 11 and the second connecting portion 12). Despite the fact that in the section of FIG. 2, the upper laminate sheet 1 and the lower laminate sheet 2 are not bonded together, the two sheets are bonded together by recesses 4 located in front of and behind the plane of the drawing (see also FIGS. 3 and 4). In Fig.2-4, Fig.8, 9 and 13, discussed below, the configuration image in the depth direction in the drawings is omitted to avoid complication of the drawings. In addition, in the present invention, the thickness of each sheet, the size of the structured part and the ratio between them are not limited to these parameters, illustrated in the drawings.

In this embodiment, the protrusions 3 and the first connecting portions 11 connected together are provided in the form of a plurality of linear rows 13 of the protrusions (see FIG. 1). The rows 13 of the protrusions are arranged in parallel, and the broken line (or curved line) part 8 in the form of grooves, having recesses 4 and the second connecting sections 12, are formed as located between the protrusions 3 and the first connecting sections 11 (in the present invention, in which there are no protrusions and any first connecting portions, called groove portions. On the top sheet 20, in accordance with another embodiment described below, the recesses 4 themselves form parts 8 in the form of grooves.) Inside the protrusions 3 there are domed spaces 6. The recesses 4 are located between the plurality of protrusions 3 so that they are not in the area of the above-mentioned connecting sections 5, intended for the formation of barriers. It is only necessary that the plurality of protrusions be arranged so that the resulting profiled sheet has a three-dimensional convex-concave shape and that the three-dimensional profiled sheet performs a predetermined function, and there are no particular restrictions on the specific number, density or distribution of the protrusions in the sheet .

As described above, in the top sheet 10 of this embodiment, the rows of protrusions 13 having the appearance of mountain chains and formed by the protrusions 3 and the first connecting portions 11 are parallel, with smoothly curved, similar to the depressions portion 8 in the form of grooves between them (see Fig. 1). The surfaces of the parts in the form of grooves are not flat, but have a wave-like surface configuration with second connecting portions 12 that are continuous with respect to the adjacent protrusions 3. Due to its special configuration of the outer surface formed by the protrusions 3, the recesses 4, the connecting portions 5 intended to form barriers (the first connecting sections 11 and the second connecting sections 12), and the parts 8 in the form of grooves, the surface sheet 10 of this embodiment has a large The ability to prevent leakage in the direction of the plane (surface) and prevents exudates, such as urine, faeces unformed (liquid stool), menstrual blood or vaginal discharge, to spread easily. More specifically, in the case of a sheet in which the protrusions are arranged in a simple manner, when liquid or semi-solid substance is released on the side of the skin surface of the top sheet 10, the released liquid or the like will pass around the protrusions due to its fluidity and spread widely on the upper surface of the sheet. However, in the top sheet 10 of this embodiment, rows of protrusions 13 arranged in mountain chains are arranged in parallel, in which the protrusions 3 are connected together by means of the first connecting portions 11, so that it is possible to rather effectively interrupt the movement of the released liquid or the like in the direction orthogonal to rows of 13 ledges. In addition, if we also consider the propagation of the released liquid or the like in a direction parallel to the rows of 13 protrusions, the undulation created by the grooved parts 8 due to the aforementioned recesses 4 and the second connecting portions 12 forms an obstacle to movement, which makes it possible to effectively suppress the spreading of the liquid that would lead to a leak.

The aforementioned difference in the ability to prevent the spreading (spreading) of the released liquid or the like in a direction parallel to the direction orthogonal to the rows 13 of the protrusions can be effectively controlled in accordance with the function that the absorbent article should perform. For example, in the case of a sanitary napkin or the like, in which the ability to prevent leakage in the transverse direction (in the width direction) is more important than the ability to prevent leakage in the longitudinal direction, the top sheet 10 is oriented so that the rows 13 of protrusions extend into the longitudinal direction of the strip, which makes it possible to reliably prevent leakage of menstrual blood or the like in the lateral direction. In addition, it is possible to move menstrual blood or the like to an appropriate degree in the longitudinal direction, which makes it possible to widely and efficiently use the area of the absorbing element located below for absorbing liquid.

Spaces are stored inside the protrusions of the top sheet 10 according to the first embodiment. These interior spaces are formed as spaces with recesses on the rear side of the protrusions, and it is preferable that the spaces are spaces formed while maintaining the functional distance between the lower surface 1b of the upper laminate sheet 1 and the upper the surface 2a of the base laminate sheet 2. Despite the fact that there are no particular limitations on the maximum length h _d ext nnih spaces 6 measured from the upper surface 2a of the base laminate sheet 2, this length is preferably in the range of from 0.4 to 2.8 mm. In the case where the upper sheet is formed only by the upper laminate sheet, the distance h _d may not be a distance measured from the lower laminate sheet, but a distance measured, for example, between the surface of the absorbent element facing the skin side and the lower surface 1b of the upper laminate sheet . In the case of using the top sheet 10 of this embodiment, when a semi-solid substance, such as unformed feces, is released onto the outer surface of the top sheet, this substance will most likely be absorbed into the interior spaces 6 through protrusions 3 with a low fiber density. In addition, the substance moves to the bottoms of the parts 8 in the form of grooves and recesses 4 to remain there, after which unformed feces or the like are absorbed into the interior spaces 6, passing between the fibers of the upper laminated sheet 1. In this case, the water contained in the unformed feces or the like, "located" in the internal spaces 6, is gradually discharged by means of an absorbing element or the like, located under the top sheet, and there is no possibility of its passage back, as a result his unformed feces dried and solidified. Due to this function, when using the top sheet 10 of this embodiment, even when there is a highly viscous liquid or semi-solid excreted substance contained in unformed feces or vaginal secretions, it is possible to maintain a very satisfactory feeling when worn and a clean skin condition for a long period time. In addition, since it is possible to suppress the backflow of unformed feces or the like, mothers are freed from the difficulties associated with wiping unformed feces from the buttocks of the baby, thereby saving time and effort needed to change the diaper. In addition, the harmful effects on the skin of infants are reduced.

Although there are no particular restrictions on the height h _{t of the} protrusions 3 for the top sheet 10 of the first embodiment, this height is preferably in the range of 0.6 to 3.0 mm. In addition, in this embodiment, the height h _{0 of the} first connecting portions 11 is less than the height h _{t of the} protrusions, and the ratio of the height of the first connecting portions 11 to the height of the protrusions 3 (h ₀ / h _t ) is preferably in the range from 0.3 to 0.8 (see figure 2). In the present invention, there are no particular restrictions with respect to the configuration of the connecting portions 5 intended to form barriers (first connecting portions 11 and second connecting portions 12), provided that they are configured to perform the function of retaining the released liquid or the like in to some extent and preventing its movement, and their configuration in the section does not have to be rectangular, but can be, for example, rounded th configuration as in this embodiment (see FIG. 1 and 3).

In addition, in the first embodiment, the height h _{s of the} second connecting sections 12 is less than the height h _{0 of the} first connecting sections 11, and the ratio (h _s / h ₀ ) is preferably in the range from 0.2 to 0.9 (see FIG. 2 and 4).

The configuration of the protrusions 3 in the first embodiment will be described in detail. Each protrusion 3 can be functionally divided into the apical part 3a, the shoulder part 3b and the side part 3c (see figure 3). The protrusion 3 has a rounded domed configuration and extends from the apical part 3a down to the side part 3c through the shoulder part 3b. Thus, the protrusions have a rounded configuration, as a result of which even when the absorbent article is slightly displaced due to the movement of the wearer or the like, the rubbing sensation in relation to the skin is suppressed, thereby providing a smooth feeling. In particular, since each protrusion is smoothly curved from the shoulder portion 3b to the apical portion 3a, the contact area between the absorbent article and the skin of the carrier is reduced. By reducing in this way the contact zone between the top sheet and the carrier, it is possible to significantly reduce the stickiness caused by contact with the surface of the sheet after it has absorbed liquid, which results in a rather dry state. In addition, the top sheet has the appearance of a soft and smooth sheet and creates a better impression. The aforementioned softness, smoothness and a feeling of dryness (lack of a sensation of stickiness or stickiness due to a dry surface) of the top sheet and a satisfactory appearance that creates such an impression cannot be easily obtained in the case of a sheet in which protrusions are formed mainly in the form of rectangular parallelepipeds or truncated quadrangular pyramids or cones. In addition, in the top sheet 10 of this embodiment, the protrusions 3 contain spaces 6 in which air is held, so that it is possible to obtain a characteristic spring and achieve a feeling of even greater softness.

In the first embodiment, the side portion 3c of each protrusion 3 is located below a point corresponding approximately to the middle of the protrusion height h _t (i.e., from the side opposite to the skin). The lateral portion 3c of the protrusion is located at a location corresponding to the lower portions of the protrusion leading down to the surface of the part in the form of grooves and a recess, and a viscous liquid or semi-solid, such as unformed feces, temporarily accumulates around this part. In this regard, it is preferable to reduce the density of the fibers of the lateral part 3c of the protrusion and to make slits or narrow sections in it, since this allows highly viscous liquid or the like to effectively pass through it for quick placement and "shelter" in the inner spaces 6 of the protrusions.

The top sheet of this embodiment includes an upper laminate sheet 1 having protrusions 3, and a flat lower laminate sheet 2 located on the side opposite to the surface on which the protrusions 3 are present, and the upper laminate sheet 1 and the lower laminate sheet 2 are fastened together by means of at least part of the recesses 4 of the upper laminate sheet by embossing. However, there are no particular limitations with regard to the bonding method, and there is also the possibility of using any other bonding method. In the case where the present invention claims that the sheet is “flat”, this means that the sheet as a whole is substantially flat, without profiling it to form protrusions, and there may be several protrusions and recesses due to bonding with other sheet material or some inevitable surface roughness due to sheet formation. On the contrary, in the case when it is claimed that the sheet is profiled, this means that the sheet is non-flat, and, for example, this means that the surface of the sheet with a natural configuration is wavy to such an extent that the shadows from the protrusions can be visually observed when irradiated with light rays from a given direction.

Although there are no particular restrictions on the width w _{b of the} recesses, assuming that the distance between adjacent structural elements is w _a , it is preferable that the ratio of the width w _{b of the} recess to a given distance w _a (w _b / w _a ) was in the range from 0.1 to 0.7. Taking into account the ratio with the dimensions of a conventional absorbent article, a certain width w _{b of the} recess, which can be adopted in practice, is in the range from 0.5 to 2.0 mm. In the top sheet of this embodiment, the width w _{0 of the} first connecting portions 11 (the width in the direction orthogonal to the connection direction) is less than the width w _{t of the} protrusions 3, and, for example, the ratio of the width w _{0 of the} first connecting portions 11 to the width w _{t of the} protrusions 3 (w ₀ / w _t ) is preferably in the range of 0.2 to 0.8. This preferred range of widths is also applicable for the ratio (w _s / w _t ) for the width w _{s of the} second connecting portions (width orthogonal to the direction of the joint) (not shown). It is advisable that a certain width w _{t of the} protrusions 3 is in the range from 2 to 6 mm.

In the top sheet 10 of this embodiment, the second connecting portions 12 are located in the grooved parts 8 (see FIGS. 1 and 4). Although in this embodiment, the lower surfaces of the second connecting portions 12 of the upper laminate sheet 1 are in contact with the lower laminate sheet 2, they are not attached to it by embossing. In this regard, in this embodiment, there are tunnel-shaped spaces 7 inside the first connecting sections 11, as a result of which the inner spaces 6 of the protrusions 3 will be joined together, but the tunnel-shaped spaces 7 can be excluded (see FIG. 3). Thus, between the protrusions 3 arranged in a checkerboard pattern, the first connecting portions 11 and the second connecting portions 12 are located, differing in height and width and differing in the manner in which the interior spaces are joined together. Thus, it is possible to provide leakage prevention ability that cannot be achieved by simply forming protrusions, as described above.

In addition, by arranging parts differing in sheet thickness in a similar way in the form of a mesh, the top sheet 10 of this embodiment can provide drape (a property that allows the sheet to adhere even to the surface of the skin with complex undulations due to smooth deformation without any or buckling, which allows the sheet to conform in shape to any change in the roughness of the skin surface due to movement of the wearer or the like). As a result, the surface of the sheet will take the form of the surface of the skin and gently adhere to the surface of the skin with a complicated surface roughness, and it is possible to maintain conformity in shape even if the wavy surface configuration changes. For example, even when the absorbent article is kept in contact with the part with significant irregularities in the skin surface, as in the case of the crotch part, the top sheet 10 can adhere to the skin without any gap between them. In addition, even when the surface irregularities of the skin continue to change due to the movement of the wearer or the like, the top sheet is deformed in accordance with the change in the surface unevenness, which makes it possible to maintain a satisfactory fit.

In the top sheet 10 of this embodiment, the density D _{0 of the} fibers of the connecting portions 5 for forming the barriers (first connecting portions 11 and the second connecting portions 12) is higher than the density D _t of the protrusion fibers. In addition, the density D _{b of the} fibers of the recesses 4 is higher than the density D _{0 of the} fibers of the connecting portions 5 intended for the formation of barriers.

In the present invention, the “fiber density” of each part is calculated by examining the unit area of the apical part of each part by means of an optical microscope in a state in which there are no configuration changes (for example, in a state of no contact in which no load is applied), and determining the number of fibers in a predetermined portion of the sheet (which is the upper laminate sheet in this embodiment) or on the surface of the sheet.

The ratio of the density D _t of the protrusion fibers to the density D _{0 of the} fibers of the connecting portions 5 intended to form barriers, i.e., D _t / D ₀ , is preferably in the range from 0.8 to 0.3. In addition, the ratio of the density D _{0 of the} fibers of the connecting portions 5 intended to form the barriers to the density D _{b of the} fibers of the recesses 4, i.e., D ₀ / D _b , is preferably in the range of 0.6 to 0.1. When there is a difference between the density D _{01 of the} fibers of the first connecting portions 11 and the density D _{02 of the} fibers of the second connecting portions 12, the density D _{0 of the} fibers of the connecting portions 5 for forming the barriers corresponds to the average of the two. In this embodiment, the density D _{01 of the} fibers of the first connecting sections is preferably lower than the density D _{02 of the} fibers of the second connecting sections.

By thus creating a density gradient of fibers in each structural part in the top sheet 10, it is possible, for example, to quickly transfer or move a liquid of low viscosity to a side with a high density of fibers, that is, from the protrusions to the recesses 4 and their periphery through the connecting sections. As a result, it is possible to suck in the liquid to the side of the top sheet 10 that is not in contact with the skin and to quickly move the liquid to the absorbent element provided below to ensure its absorption and retention. On the contrary, if we consider a highly viscous liquid or semi-solid substance, such as unformed feces, most likely this substance will pass through the parts around the tops of the protrusions 3, formed in the form of large domes, due to their low density, as a result of which the effect is enhanced, due to which it placed in spaces 6. Thus, the fluid retraction property characterized by the density gradient of the fibers and the leakage / backflow prevention property due to the distinctive configuration of the it leaf occur simultaneously, so that even in the case when simultaneously there are selected substances which differ in viscosity, it is possible to properly absorb and retain them. In addition, since the density of the fibers of the protrusions 3, which are brought into direct contact with the skin, is low, excreted matter such as urine or unformed feces will not easily remain between the fibers. As a result, a situation is effectively suppressed in which the liquid remains on the surface and stickiness occurs, which makes it possible to achieve a special sensation of dryness due to the tips 3a of the protrusions brought into contact with the skin. In addition, it is possible to keep the skin of the user in a clean state, which makes it possible to protect the skin of an infant or woman from a rash or the like.

As described above, in the top sheet 10 of this embodiment, the protrusions 3 are staggered. In this case, the expression "in a checkerboard pattern (or zigzag)" means a state in which the protrusions 3 in each row are spaced at equal intervals and in which the protrusions of adjacent rows are offset (preferably by 0.5 steps). More precisely, this means a state in which, when the protrusions 3 of each row protrude in a direction orthogonal to the row, between the projected images of the protrusions 3 of a certain row (preferably directly between them) are the projected images of the protrusions of the adjacent row. However, this also includes a case in which there is a slight deviation from the above arrangement, such as a deviation unavoidable in the production environment. Thus, due to the location of the protrusions 3 in a checkerboard pattern, it is possible to ensure uniform distribution of pressure on the skin of the wearer, which makes it possible to ensure a satisfactory springing. In addition, also from the point of view of absorption and retention of the liquid, this function is uniformly performed on the entire sheet, which is preferable.

Although a two-layer structure is adopted for the top layer 10 of this embodiment, including the upper laminate sheet 1 and the lower laminate sheet 2, it is also possible that the upper sheet 10 will be formed only by the upper laminate sheet 1. In this case, it is possible for example, lay the top sheet having the upper laminate sheet 1 on the upper surface of the absorbent element so that its surface 1b, which is not to be brought into contact with the skin, will be kept in contact with the absorbent element. In this case, it is also possible to attach the rear surface of the upper sheet having the upper laminate sheet 1 to the upper surface of the absorbent element. Thus, when using the top sheet having only the upper laminated sheet 1, elasticity and flexibility can be ensured due to the protrusions 3 located on the side of the surface facing the skin and the spaces 6 corresponding to them, and, in addition, due to the connection of the protrusions 3 by means of connecting sections 5 intended for the formation of barriers, as in the case of the two-layer structure described above. With regard to the function of providing penetration for liquids, unformed feces or the like, the operations performed by the domed spaces 6 may be performed by combination with an absorbing element or the like. At this moment, in particular, unformed feces or the like, hidden inside the spaces 6, are held in direct contact with the absorbing element, so that the water contained in them is likely to move into the absorbing element, and unformed feces or the like are preferably dry quickly. In addition, this is also preferable due to the fact that the fluid transported to the connecting portions 5 intended for the formation of barriers and recesses 4, the fiber density of which is higher than the fiber density of the peaks of the protrusions 3a, is directly absorbed and retained by the absorbing element without passing through the lower laminated sheet 2.

5 is a schematic map of a layout illustrating the location of six-point embossing α when the top sheet of the first embodiment is visible in plan view. The drawing illustrates an embossing pattern in the form of a grid of squares of 12 rows × 12 columns, with the following six-dot embossing pattern components. Six embossing points (1, 2), (1, 4), (3, 1), (3, 5), (5, 2) and (5, 4) form the first element of the six-dot pattern (first element). In this case, the values in parentheses show (row number, column number). The adjacent second element on the right side is formed by six embossments (1, 8), (1, 10), (3, 7), (3, 11), (5, 8) and (5, 10). In addition, the third element under the first element has two common points (5, 2) and (5, 4) with the first element. It is formed by six points (5, 2), (5, 4), (7, 1), (7, 5), (9, 2) and (9, 4). In addition, the fourth element to the right of the third element has common embossments (3, 5), (3, 7), (5, 4), (7, 5) and (5, 8) with one or the other of the first - the third element and includes six points, namely the embossing (7, 7) and the above five points. Thus, six-dot patterns are formed repeatedly, while some of the elements (at least two points) will be common to the patterns.

In this case, when applying the above six-point embossing pattern to the shape of the embossing top sheet 10, the embossments α form recesses 4. In addition, with respect to the first element, its center point β forms a protrusion 3 (protrusion tip 3a), and the first connecting portions 11 are located in places γ in front of and behind the central point β. In this case, the second connecting sections 12 are located in places ε. In addition, the protrusion 3 is also located in the place β in the center of the third element and is connected to the protrusion 3 of the first element by means of the first connecting portions 11 formed in the places γ. As a result, the column “extending” in column 3 (coordinate) formed by β and γ places a row of 13 protrusions on the top sheet 10. Similar rows of 13 protrusions are repeated in column 6 (coordinate), column 9 (coordinate), ..., and the protrusions 3 are distributed in the direction of the plane in a checkerboard pattern, providing further formation of the top sheet 10 with a different surface configuration having connecting portions 5 intended to form barriers and a recess 4. Thus, in the first embodiment, the upper layer the one sheet 1 and the lower laminate sheet 2 will be bonded together to form a six-point pattern of a (welded) joint having parts with bonding at six points, with each unit bonding zone having at least two points in common with adjacent unit bonding zones, and each protrusion 3 is formed so that it will be surrounded by parts with fastening at six points, forming a single zone of bonding.

For the upper sheet 10 for the absorbent article of the first embodiment, there are no particular restrictions on the fibers forming the upper laminate sheet 1 or the lower laminate sheet 2. For example, it is preferable to use fibers with a characteristic of 1.0 to 7.8 dtex. Despite the fact that in this embodiment, each of the upper laminate sheet 1 and the lower laminate sheet 2 is a single layer structure, it is also possible to use a structure of two or more layers. In addition, it is also possible to create a layer with some other function located between these layers and / or outside of these layers. Despite the fact that there are no special restrictions related to the density (mass 1 m ² ) of the upper laminated sheet 1 and the lower sheet 2, taking into account the fact that they are used for a conventional absorbent product, it is practical from a practical point of view, so that the density of the upper laminate sheet 1 and the lower laminate sheet 2 is in the range from 10 to 40 g / m ² .

For the upper laminate sheet 1 and the lower laminate sheet 2, it is preferable to use a nonwoven material. As the non-woven material, a conventional non-woven material can be used. Examples of non-woven materials include thermally bonded non-woven material made by carding, non-woven material of a spunbond production method, non-woven material obtained by the aerodynamic method from a melt, non-woven material obtained by exposure to liquid jets (hydro-entangling), and non-woven material obtained by needle-punched. When bonding the upper laminate sheet 1 and the lower laminate sheet 2 by heat bonding, as described below, the nonwoven fabric preferably contains hot-melt fibers. The hot-melt (thermofixable) fibers preferably have a sheath / core structure, such as polyethylene terephthalate / polyethylene (PET / PE) or polypropylene / polyethylene (PP / PE). In addition, it is preferable if the nonwoven material is subjected to processing to impart hydrophilicity by using a surfactant or the like. Among the fiber types of the upper laminate sheet 1 and the lower laminate sheet 2, a combination of fibers of polyethylene terephthalate / polyethylene (PET / PE) is a preferred combination.

Next, a preferred method of manufacturing a top sheet 10 for an absorbent article in accordance with this embodiment, preferred as a profiled sheet of the present invention, will be described with reference to the drawings. 6-1 is a schematic explanatory view illustrating one view of a method of manufacturing a profiled sheet 10 according to the first embodiment. As illustrated in the drawing, first, the upper laminate sheet 1 is unwound from a roll of raw material (not shown) and, in addition, the lower laminated sheet 2 is unwound from a roll of raw material (not shown). The upper laminated sheet 1 and the lower laminated sheet 2, respectively, are unwound in the directions MD of moving them in the machine (directions d1 and d2). In this case, the term "MD direction (direction of movement of the material in the machine)" refers to the direction in which sheet material, such as non-woven material, moves during manufacture. The term “MD direction” is an abbreviation of the term “machine direction” and is sometimes simply expressed as MD to denote a direction. On the other hand, the term “CD direction (transverse direction)” refers to a direction orthogonal to the MD direction (direction of movement of the material in the machine). The term “CD direction” is an abbreviation of “cross direction” and is sometimes simply expressed as a CD to indicate a direction.

The unwound upper laminate sheet 1 is drawn into the engagement zone P _{1 of the} first drum 51 with a peripheral surface with protrusions / recesses and the second drum 52 with a peripheral surface with protrusions / recesses engaged with the first drum 51, whereby the upper laminate sheet 1 is configured with protrusions / indentations. Preferably, the dent of each tooth of the first drum 51 has a suction port (not shown). The depressions of the ring gear correspond to the recesses of the peripheral surface configuration of the first drum 51 made with protrusions / recesses. The suction port leads to a source (not shown) of suction force, such as a blower or vacuum pump, and it is preferable that the source of suction force is controlled so that the suction zone P ₁ engages the first drum 51 (rotating in the direction shown by arrow d ₅ ) and a second drum 52 (rotating in the direction shown by the arrow d ₇ ) to the part P ₃ , where the upper sheet formed by bonding together the upper laminate sheet 1 and the lower laminate about sheet 2, goes out. A specific example of a suction drum will be described in detail below with reference to FIGS. 6-4 and 6-5. Thus, the resulting upper laminate sheet 1, which is configured with protrusions / recesses by engaging the first drum and the second drum, is maintained in a profiled state while being held in close contact with the peripheral surface of the first drum 51 under the action of a suction force acting due to suction port. As for the drums 51, 52 having protrusions and recesses on their peripheral surfaces, for example, the drums illustrated in FIGS. 2-5 of JP-A-2004-174234 can be used.

In the connection zone P ₂ , the upper laminate sheet 1 is superimposed on the lower laminate sheet 2, which is supplied separately, while the upper laminate sheet 1 is held in close contact with the peripheral surface of the first drum 51 due to suction. In this case, it is preferable that two sheets are squeezed between the first drum 51 and the third drum 53. As the third drum 53, it is preferable to use a support drum without protrusions or indentations, and it is preferable to heat only the third drum 53 to a predetermined temperature. As a result, the upper laminate sheet 1 and the lower laminate sheet 2 located at the distal ends of the teeth of the first drum 51 are joined together by heat fusion. The recesses 4 are formed during the formation of the upper sheet due to this bonding with compression. On the other hand, the upper laminate sheet 1 and the lower laminate sheet 2 are not squeezed in the area of the recesses (troughs) of the ring gear and are not subjected to any heat fusion, as a result of which protrusions 3 are formed. That is, in this method, when processing the sheet, there is no processing of compression type with heating is not carried out by the first drum 51 and the second drum 52, so that softness is maintained in the region of the vertices of the protrusions 3. Thus, even though the parts forming the recesses 4 are subjected to compression with heating to baking heat-fusion fibers of non-woven materials, which makes them somewhat harder, when using this sheet as the top sheet, the protrusions 3 are in a soft state, so that no solid parts are brought into direct contact with the skin, resulting in a good feeling for the skin. In this case, the parts forming the first connecting sections 11 and the second connecting sections 12 are profiled while holding them between the recesses 4, and the protrusions 3 are arranged so that they are connected together.

In the manufacturing method of this type, the composite sheet formed by joining the upper laminate sheet 1 and the lower laminate sheet 2 is heated and squeezed in the zone P ₃ , where it is held between the first drum 51 and the fourth drum 54. In this case, it is preferable that the fourth drum 54 It was a supporting drum, which like the third drum 53 does not have any protrusions or recesses on its outer periphery. Preferably, the fourth drum 54 is heated to a predetermined temperature. Thus, a firmly fixed bonded portion is formed, as a result of which the shape stability of the protrusions is maintained.

6-2 is a schematic explanatory view illustrating another view of a method for manufacturing a profiled sheet of the present invention. As illustrated in the drawing, this embodiment is similar to the embodiment illustrated in FIGS. 6-1 in that the first to fourth drums are used (51, 52, 53, 54). However, in the embodiment illustrated in FIGS. 6-2, the lower laminate sheet 2 is not used, and only the upper laminate sheet 1 is used. In the upper laminate sheet 1, protrusions and indentations are formed that form the protrusions 3 and the grooved portions 4. Thus, although this the sheet is not connected to another sheet in the grooved portions 4, it is heated and squeezed by the first drum 51 and the third drum 53 or the fourth drum 54, and the nonwoven fibers are thermally fused and cured. Thus, it is provided not only simple bending of the sheet with the formation of a configuration with protrusions and recesses, but also profiling it so as to form protrusions 3 and grooved parts 4 that perform a certain function in the formation of the top sheet, as described above. In addition, profiling the sheet by gearing the teeth of the first drum 51 and the second drum 52 and suction by the first drum 51 at the locations P ₁ to P ₃ are the same as the corresponding operations in the embodiment illustrated in FIG. 6-1.

FIG. 6-3 is a schematic diagram illustrating how the teeth of the first drum and the second drum are engaged with each other in a manufacturing method according to the kind of method illustrated in FIG. 6-1. In FIGS. 6-3, the distal ends of the teeth of two drums at a point P ₁ , where the teeth of the first drum and the second drum are engaged with each other, are projected in the direction of arrow A of FIG. 6-1. The solid lines show the teeth (distal tooth ends) 52a of the second drum 52, and the dotted lines show the teeth (distal tooth ends) 51a of the first drum 51. However, it should be noted that the two drums are actually circular in front view (Fig.6- 1) and are engaged with each other by means of only one row of teeth, while in FIGS. 6-3 the figure is made as if the teeth on even opposed plates are engaged with each other (or the feed is in the MD direction motion mater als in the machine, the engagement of the point P ₁ extends in the timeline).

The above gear engagement of the teeth of the two drums will be described in more detail. In the schematic diagram of FIG. 6-3, the structure shown in FIG. 6-1 is shown in the direction of arrow A, so that the distal ends of the teeth 52a are “retracted” to the “deep” side of the drawing, and the distal ends of the teeth 51a protrude to the front side drawing, wherein the teeth 51a and 52a are engaged with each other. That is, when the upper laminate sheet 1 (see FIG. 6-1) is pressed inward while the distal ends of the teeth 52a are retracted toward the “deep” side of the drawing to obtain the upper sheet, the formation of a certain number of locally curved parts forming the protrusions 3 (see Fig. 1). On the other hand, when the distal ends of the teeth 51a push the upper laminate sheet toward the “front” side of the drawing to obtain the upper sheet, a number of locally curved parts forming the grooved parts 4 are formed. The upper laminate sheet, which is thus configured with protrusions / recesses, is fed towards the third drum while maintaining close contact with the first drum and is superimposed on the lower laminated sheet 2, supplied separately as opio sano above (see Fig.6-1). Then, the two sheets are heated and squeezed between the distal ends 51a of the teeth of the first drum 51 and the peripheral surface of the third drum 53 or the fourth drum 54 to form a hot stamping site with heat fusion by means of the distal end parts 51a of the teeth.

In this case, from the distal end parts 51A of the teeth of FIGS. 6-3, only the distal ends T ₁ -T _{6 are considered} . The distal ends of the teeth T ₁ -T ₆ form the parts forming the recesses 4. In this case, the sections of nonwoven material extruded (or pressed) by the distal ends 51a, 52a of the teeth are moved locally due to stretching (or compression), and during the execution of this fiber located, for example, at the distal ends, tend to enter into the gaps between the teeth of the two drums. In this case, a tensile force will usually be applied to the upper laminate sheet 1 in the direction MD of the movement of the material in the machine, so that under the influence of its characteristic direction of motion is communicated the movement of fibers of the nonwoven material forming the upper laminate sheet. More specifically, when the fibers tend to enter the gaps between the distal ends of the teeth T ₁ -T ₆ due to the tensile force of the sheet applied in the direction MD of the movement of material in the machine, the movement of the fibers in the direction MD of the movement of material in the machine is different from the movement in the transverse direction CD. That is, in the zone 91, which is the gap between the distal ends of the teeths T ₁ and T ₄ and between the distal ends of the teeths T ₃ and T ₆ , the number of fibers entering from another zone 92 increases, and when the upper sheet is formed, sections representing the first connecting portions 11. In addition, the part corresponding to the zone 91 is not heated or squeezed by the distal end 52a of the teeth, so that this part is not attached to the lower laminate sheet 2, as a result of which tunnel-like spaces 7 of the upper sheet are formed . 6-3, the direction MD of the movement of material in the machine corresponds to the direction X in the top sheet of the embodiment illustrated in FIGS. 1 and 2.

On the contrary, the number of fibers included in the zones 92 is relatively small, as a result of which, when forming the top sheet, they form only the second connecting sections 12 (small protrusions 9 in the third embodiment described below). Thus, the recesses 4 formed by the parts that are extruded by the distal ends 51a of the teeth and the second connecting portions 12 are continuous parts in the form of grooves with a broken line shape. In a specific illustrated example, when forming parts in the form of grooves, the row formed by the distal ends of the teeth T ₁ , T ₂ and T ₃ , and the row formed by the distal ends of the teeth T ₄ , T ₅ and T ₆ , are part 8 in the form of grooves, continuous and having the shape of one broken line in the direction MD of the movement of the material in the machine. Thus, a row of projections 13 having a mountain range in which the protrusions and the first connecting portions of the top sheet are connected in the X direction in FIG. 1 is formed so that it extends in the MD direction of movement of the material in the machine using this type of manufacturing method (see Fig.6-3). In contrast, the sectional configuration illustrated in FIG. 3 and “extending” in the Y direction of FIG. 1 is formed in the transverse direction CD of FIG. 6-3.

If in this case we assume that the area of the hexagon formed by connecting the centers T ₁ -T _{6 of the} teeth 51a of the first drum (surfaces of the distal ends) is the base area A and that the area contained within the hexagon formed by connecting the centers T ₁ is T _{6 of the} teeth 51 a of the first drum represents area B, the ratio of area B to base area A (B / A) is preferably in the range of 0.10 to 0.25. When the magnitude of this ratio (B / A) is too small, there is no difference between the protrusions 3 and the first connecting portions 11, so that they are formed as a single protrusion. Thus, the first connecting sections 11 cannot be formed, so the protrusion is easily wrinkled. When this ratio (B / A) is too large, the tunnel-like spaces 7 in the first connecting portions 11 may disappear. In addition, the ratio of the area C of the teeth 52a of the second drum (surfaces of the distal ends) within the base area A to the base area A (C / A) is preferably in the range of 0.10 to 0.25. When this ratio (C / A) is too small, the formation of protrusions can be difficult. When this ratio (C / A) is too large, there is a possibility that the protrusions will take a configuration similar to a rectangular parallelepiped and become quite hard, which will lead to a deterioration in softness to the touch. Preferably, the value obtained by dividing the distance 97 between the teeth of the first drum by measured in the transverse direction CD, the size 98 of the teeth of the second drum, was in the range from 0.25 to 0.83. By adjusting this value, it is possible to obtain in an even more stable manner protrusions 3, essentially having the shape of hills, and the first connecting sections 11.

Although there are no particular restrictions on the size of the 101 teeth of the first drum in the direction MD of the movement of the material in the machine, this size is preferably in the range, for example, from 0.5 to 3.5 mm and more preferably in the range from 0.6 to 2 mm. In addition, although there are no particular restrictions on the size 100 in the transverse direction of the CD, it is preferably in the range of, for example, from 0.5 to 3.5 mm and more preferably in the range of 0.6 up to 2 mm. In addition, although there are no particular restrictions on the distance 97 between the teeth of the first drum, it is preferably in the range of, for example, from 0.8 to 5 mm and more preferably in the range from 1 to 2 mm. Although there are no particular restrictions on the size of the 99 teeth of the second drum in the direction MD of the movement of the material in the machine, this size is preferably in the range, for example, from 0.5 to 3.5 mm and more preferably in the range from 0, 6 to 2 mm. In addition, although there are no restrictions on the size 98 in the transverse direction of the CD, it is preferably in the range of, for example, from 0.5 to 6 mm and more preferably in the range of from 0.6 to 4 mm. Although the distance 94 between the teeth of the first drum 1 or the second drum 2 can be determined accordingly, it is preferably in the range of, for example, from 1.5 to 10 mm and more preferably in the range of from 2 to 6 mm. Although there are no particular restrictions on the distance 102 between the teeth of the first and second drums in the MD direction of movement of the material in the machine, it is preferably in the range of, for example, from 0.4 to 4 mm. Furthermore, although there are no particular restrictions on the distance 103 between the teeth of the first and second drums in the direction MD of the movement of material in the machine, it is preferable that the distance 103 between the teeth is the same as the distance 102 between the teeth of the first and second drums in the direction MD of the movement of the material in the machine, it is more preferable that it is in the range of, for example, from 0.4 to 4 mm. In addition, there are no particular restrictions on the distance 104 between the teeth in the transverse direction CD, and this distance is preferably in the range, for example, from 1.2 to 7.5 mm.

In addition, the height and configuration of the teeth of the first and second drums can be determined accordingly in accordance with the configuration of a given top sheet. For example, the height of the teeth is preferably in the range of 0.8 to 9 mm. Although in FIG. 6-3, profiling of the sheet by engagement (interaction) of the teeth of the first drum and second drum is illustrated with respect to the manufacturing method in accordance with the kind of method illustrated in FIG. 6-1, it is also applicable to the manufacturing method in in accordance with the view illustrated in Fig.6-2.

In addition, it is preferable to use a non-woven material with elongation at break in the direction MD of the movement of the material in the machine of 100% or more, which makes it possible to form a profiled top sheet of a preferred configuration in accordance with the present invention.

Fig.6-4 is an enlarged schematic perspective view of the main part of the first drum 51 in accordance with one embodiment (51A). The first drum 51 is formed as a drum by connecting a plurality of spur cylindrical gears 61, 61, ... with a predetermined tooth width. Preferably, the width of the teeth of each gear wheel is determined in accordance with the distance between the protrusions of the sheet for a given absorbent product. In this embodiment, adjacent gears are connected so that their teeth are offset relative to each other by 0.5 meshing steps.

Suction holes 63 are formed in parts representing grooves between the teeth (cavities between the teeth) of each gear wheel of the first drum 51A. The top sheet is held in close contact with the peripheral surface of the first drum under the action of the suction force due to the suction holes 63, as a result of which the shape condition with protrusions / recesses is maintained. In this case, while ensuring a predetermined gap G between adjacent gears, the sheet can be brought into close contact with the peripheral surface of the first drum without causing any excessive suction force or cutting action due to the interaction of the drums with the formation of protrusions / recesses on the sheet. The clearance G is preferably in the range of 0.1 to 50 mm, and more preferably in the range of about 0.1 to 5 mm.

Fig.6-5 is an enlarged perspective view of the main part of the first drum 51 in accordance with another embodiment (51B). In the first drum of this embodiment, a plurality of gears 61c and second gears 61d in the form of spur gears are connected, and the gears are coaxially mounted on the rotating shaft 65 like a drum. All gears have the same tooth width. Each gear wheel has a hole in the center, and a rotating shaft 65 is inserted into the hole. The gears and the rotating shaft 65 have grooves (not shown) in which a key (not shown) is inserted, as a result of which the rotation of the gears idle is prevented.

The diameter of the circle at the tops of the teeth of the second gears 61d is less than the diameter of the circle at the tops of the teeth of the first gears 61c. More precisely, it is preferable that the diameter of the circle at the tops of the teeth of the second gears (spacers) is 0.5-10 mm less than the diameter of the circle at the tops of the teeth of the first gears.

In the first drum 51B of this embodiment, one first gear 61c is located on both sides of the second gear 61d, and a plurality of gear groups 66 are installed, each of which has the aforementioned three gears. In the gear groups 66, the first gears 61c and the second gears 61d are arranged so that the gear teeth are parallel in the direction of the axis of rotation of the drum. As a result, in each group 66 of gears, projections 67 and recesses 68 will be alternately formed in the direction of rotation of the drum. Each of the protrusions 67 has either the teeth of three gears (i.e., the first two gears 61c and one second gear 61d) located parallel to the direction of rotation of the drum (indicated by 67a in the drawing), or the teeth of the two first gears 61c, located parallel to the direction of the axis of rotation of the drum (indicated by reference numeral 67b in the drawing).

Two or more groups of 66 gears are used. The gear groups 66 are arranged so that the steps of the protrusions and recesses of the adjacent gear groups 66, 66 are different from each other. In this embodiment, the protrusions and recesses of the adjacent gear groups 66, 66 are offset by 0.5 steps.

In each group 66 of gears, between the two gears 61c, a plurality of parts 69 are formed in the form of gaps with constant gaps in the direction in which the drum 51B rotates. Each gap portion 69 is formed by two first gears 61c and a second gear 61d located therebetween. More specifically, each gap portion 69 is bounded by opposing side surfaces of two first gears 61c and two adjacent teeth of a second gear 61d. Thus, the number of gaps formed 69 is equal to the number of teeth of the second gear 61d. Parts 69 in the form of gaps open outward.

The first gear wheel 61c has a plurality of holes 60 arranged so that they surround a hole in the center into which the rotating shaft 65 is inserted. The holes 60 have the same diameter and are formed at equal distances from the center of the gear wheel. The angles formed by adjacent holes 60, 60 and the center of the gear are the same. The number of holes 60 in each gear 61c is the same as the number of teeth of the second gear 61d. In addition, when assembling the gear groups 66, the first and second gears 61c, 61d are arranged so that the holes 60 are located between the adjacent teeth of the second gears 61d. In the state in which the gear groups 66 are assembled and arranged so that the steps of the protrusions and recesses in the gear groups 66 are different from each other, the openings 60 of the first gears 61 c are continuous in the direction of the axis of rotation of the drum 51B, and inside the drum a plurality of suction channels 61 are formed extending in the direction of the axis of rotation. The suction channels 61 communicate with the aforementioned parts 69 in the form of gaps.

At least one end of the suction channels 61 leads to a source of suction force, such as a blower or vacuum pump (not shown). Thus, when the suction power source is actuated to perform the suction operation, air is sucked in from the parts 69 in the form of gaps in the suction channels 61.

7 is a partially exploded schematic perspective view of a top sheet 20 according to another embodiment (second embodiment) of a profiled sheet of the present invention. Fig. 8 is an enlarged section of zone VIII of the profiled sheet of Fig. 7. Fig.9 is a section along the line IX-IX, an enlarged section of a profiled sheet in Fig.7. In the top sheet 20 of the second embodiment, structural parts, dimension lines and the like, functionally common with the aforementioned top sheet 10 of the first embodiment are denoted by the same reference characters.

In the top sheet 20 of the second embodiment, each of the staggered protrusions 3 has connecting portions 5 for forming barriers on all four sides, and adjacent protrusions 3 are connected to each other by connecting portions 5 for forming barriers, on four sides. The connecting sections 5, intended to form barriers on four sides, are arranged so that they essentially divide each protrusion 3 into four equal parts in the direction of the surface of the sheet, that is, in places located at an angle of approximately 45 degrees relative to the protrusion 3, which should be in the center. Thus, on the side of the upper laminated sheet 1 (on the side facing the skin) of the upper sheet 20, a surface configuration is formed with a pronounced grid of elements similar to mountain ranges, in which many “mountains” (protrusions) are connected by ridges on four sides. In this case, despite the fact that the upper laminate sheet 1 and the lower laminate sheet 2 are fastened together with gaps by means of embossments formed in the recesses 4, it is also possible to form the upper sheet only by means of the upper laminate sheet 1, which is configured with protrusions / recesses, as mentioned above.

In the second embodiment, the protrusions 3 are parts that are shaped so that they protrude on the surface of the skin side provided on the upper laminate sheet 1. In the section of Fig. 8, it is seen that each protrusion 3 is formed so that it is located between two recesses 4 (see Fig. 8). In addition, each protrusion 3 is functionally divided into the apical part 3a, the shoulder part (edge) 3b and the side part 3c. In particular, it has a configuration essentially in the form of a hill with a rounding from the apical part 3A to the shoulder part 3b. On the other hand, in the cross section of Fig. 9, it is seen that adjacent protrusions are connected by connecting portions 5 for forming barriers. In this case, despite the fact that each protrusion 3 has an apical part 3a and a shoulder part 3b, in this section it can be seen that the side part 3c does not differ from the connecting section 5, intended for the formation of the barrier, but forms one with it and is continuous in relation to it. In addition, the inner parts of the connecting sections 5 intended for the formation of barriers are filled with fibers. Despite the fact that in this embodiment, the upper laminate sheet 1 and the lower laminate sheet 2 are not bonded together in the areas of the connecting portions 5 for forming the barriers, it is preferable that the two sheets are functionally in contact with each other. However, the two sheets may not be in contact at a certain interval, provided that the functioning of the connecting sections 5 intended for the formation of barriers is maintained. As in the cross section of Fig. 9, as well as in the cross section taken along the line X-X in Fig. 7 (a schematic representation of which is not shown), the protrusions 3 are connected by means of connecting sections 5 intended to form barriers.

In the top sheet 20 of the second embodiment, the values of the width w _a and the width w _b and the preferred range of their ratio values (w _a / w _b ) are the same as the corresponding parameters in the first embodiment described above. However, in the second embodiment, the width w _{c of the} protrusions in the cross section of FIG. 9 is preferably in the range of 2 to 4 mm, and the width w _{d of the} connecting portions is preferably in the range of 0.5 to 2 mm. The distance h _d for the widest part of the domed space 6 in the protrusion, the height h _{t of the} protrusion 3, the height h _{0 of the} connecting portion 5, intended for the formation of the barrier, and the ratio of the height of the connecting portion 5, intended for the formation of the barrier, to the height of the protrusion 3 (h _t / h ₀ ) are the same as the corresponding parameters in the first embodiment. In addition, the preferred ranges of the density D _{t of the} fibers of the protrusion portion 3a, the density D _{0 of the} fibers of the barrier joint portion 5, and the density D _b of the recess fibers are the same as the corresponding parameters in the first embodiment described above.

The topsheet 20 of the second embodiment has a different configuration of the outer surface and the configuration of the inner surface of the sheet, as described above, which makes it possible to prevent the spreading of urine, unformed feces or the like in the direction of the surface. In addition, due to the "interaction" of the density gradients of the fibers of the protrusions 3, the connecting sections 5, intended for the formation of barriers, and recesses 4, you can provide a feeling of dryness for the skin. In addition, due to the spatial grid formed by the different inner space of the sheet and the configuration of the outer surface, it can be possible to very “cope” with unformed feces or the like, and excellent drapeability characteristics can be imparted. These effects are the same as those of the first embodiment described above.

The distinctive effect of the second embodiment is that due to the location of the connecting portions 5 intended to form barriers on the four sides of each protrusion 3, it is possible to provide a spreading prevention function for unformed feces or excreted fluid such as urine from all four sides of each protrusion 3 . In addition, since the internal spaces 6 are independent of each other, there is the possibility of even more effective suppression of spreading unformed feces or the like in the direction of the surface after holding them inside. Thus, for example, in the case where unformed feces or the like should be kept as much as possible in one place and their spreading in the direction of the surface should be strongly suppressed, it is preferable to use the top sheet of the second embodiment for an absorbent article.

The top sheet 20 of the second embodiment can be manufactured in the same way as the top sheet 10 of the first embodiment described above. For example, it can be manufactured by a process similar to that illustrated in FIG. 6-1. Thus, the teeth 51a of the drum 51 forming the recesses 4 are arranged, for example, in the form of a four-point welded joint, as illustrated in FIG. 10, in which four embossments α form one element of a pattern (pattern). In this case, each tooth 52a of the drum 52 will be located so that it is in a central place β of the aforementioned pattern element including four points, and the protrusion 3 is formed with the inner space 6. Thus, the profiling is performed by introducing the teeth 51a and 52a into meshing with each other, resulting in a top sheet 20, profiled with a diagram of the formation of welded joints at four points, while on this sheet the connecting sections 5, intended for the formation of barriers, are located at places γ. Despite the fact that Fig. 10 only illustrates the position β for the protrusion 3 (protrusion vertex 3a) and the position γ for the connecting portions 5 intended to form barriers with respect to the first element formed by four embossments (1, 3), (3 , 1), (3, 5) and (5, 3), in this embodiment, the structural element formed by the protrusions 3, the connecting sections 5 and the recesses 4, located respectively in places α, β and γ, is repeated in all directions in the direction surfaces also for other embossed elements.

FIG. 11 is a schematic partial perspective view of a main part of a top sheet for an absorbent article in accordance with one embodiment (third embodiment) of the present invention, and FIG. 12 is an enlarged perspective view of a zone XII of FIG. 11, as viewed from a slightly different angle. A plurality of protrusions 3 are staggered on the side of the upper laminate sheet 1 in the upper sheet 30 for the absorbent article in accordance with the third embodiment, that is, on the side to be brought into contact with the skin of the carrier. The protrusions 3 have domed spaces 6 in their inner parts formed by profiling the upper laminate sheet 1 to form a configuration with protrusions / recesses.

The protrusions 3 are connected by connecting sections 5, intended for the formation of barriers, for the formation of rows of 13 protrusions. Dome-shaped spaces 6 in the protrusions are connected by tunnel-like spaces 7, and recesses are located on both sides of the connecting sections 5, intended for the formation of barriers and provided in the rows of protrusions. In a third embodiment, the connecting portions 5 for forming barriers can in particular be called “comb-shaped portions”. This sheet configuration is the same as the configuration of the first embodiment, and properties such as drapeability characteristics, satisfactory fit and springability, as well as functionality by which a liquid or the like is moved into the absorbent element to “cover” it, each of which appears due to the configuration of the sheet, the same as the corresponding properties of the first embodiment.

The spaces 6 inside the dome-shaped protrusions 3 are spatially continuous relative to each other due to the tunnel-like spaces 7, as a result of which unformed (liquid) feces or the like effectively hide in the grid of internal spaces. This function, which is similar to the corresponding function of the first embodiment, will be described here in detail.

When unformed feces or the like are released, they first move toward the bottom of parts 8 in the form of grooves on the outer surface of the top sheet and remain there. After this, or at the same time, unformed feces or the like pass between the fibers of the top sheet and are held within the interior spaces 6. In this case, water from unformed feces or the like located in the interior spaces 6 is gradually removed by means of an absorbing element or the like, located under the top sheet, and unformed feces or the like are gradually dried to achieve a state in which they do not form a backflow, resulting in the wearer to maintain a proper feeling. In addition, in the top sheet of this embodiment, the inner spaces 6 of the dome-shaped protrusions are connected together by the tunnel-shaped spaces 7. Thus, when, for example, a large pressure from the body side is applied to the top sheet, there is the possibility of suppressing and preventing backflow to the surface side, in contact with the skin, due to suppression of deformation by comb-like parts and the like. In addition, unformed feces or the like located in the spaces 6 are distributed in the direction of the surface of the top sheet through the tunnel-like spaces 7, whereby a backflow to the surface side in contact with the skin is suppressed and prevented. As a result, even when unformed feces or a highly viscous liquid or semi-solid substance contained in the vaginal secretions are released, it is possible to maintain very satisfactory wearing comfort and clean skin for a long period of time. Taking into account a function similar to that described above, it is advisable that the distance h _n (FIG. 2) for the widest part of the tunnel-like spaces 7 inside the comb-shaped parts is preferably in the range of 0.1 to 5 mm and more preferably 0.1 mm up to 1 mm.

Unlike the first embodiment, in which there are second connecting portions 12, in the top sheet 30 according to the third embodiment, there are no second connecting portions (12), but small protrusions 9 are located in corresponding places. Small protrusions 9 do not connect the protrusions 3 to each other and are arranged in the grooved parts 8 as protrusions independent of protrusions 3. In the third embodiment, the small protrusions 9 have a lower height than the connecting portions 5 for forming barriers and the height ratio h _r small protrusions 9 to a height h _{0 of the} connecting section 5, intended for the formation of the barrier (comb-shaped parts), that is (h _r / h ₀ ), is preferably in the range from 0.1 to 0.9. In the third embodiment, the small protrusions 9 have a greater height than the lower parts of the recesses 4 (the lowermost parts on the non-skin contact side). Due to the presence of small protrusions 9, the lower surfaces of the grooved parts 8 do not represent flat U-shaped grooves, but form a functional tuberous (uneven) surface, as described above. In addition, although small protrusions 9 are in contact with the lower laminate sheet 2 from the back surface of the upper laminate sheet, they are not bonded by embossing like recesses 4. Thus, the comb-like portions 5 and small protrusions 9 differ in height , the width and state of bonding, are located between the protrusions 3 and the depressions 4 located in a checkerboard pattern, as a result of which it becomes possible to provide a function such as drape, which cannot be provided by means of ia simple parts in the form of grooves through linear welds.

When free spaces simply form inside the protrusions, it is likely that the protrusions will crumple when a lot of pressure is applied to them. However, in the top sheet of this embodiment, the protrusions 3 are connected by thin and narrow connecting portions intended to form barriers (ridge-shaped portions) 5 to form a mountain chain configuration, so that it is possible to prevent excessive deformation when the protrusions 3 are strongly compressed while maintaining sufficient springing. As a result, the protrusions do not wrinkle excessively, and it is possible to provide sufficient springing. The connecting portions 5 intended for the formation of barriers (comb-like portions) and small protrusions 9 are present between the recesses 4 formed by joining or fastening the upper laminate sheet and the lower laminate sheet, and their curvature is less than the curvature of the protrusions 3, so that they are less prone to deformation. Thus, it is possible to suppress deformation in stages by means of the corresponding heights of the comb-shaped portions 5 and small protrusions 9 in connection with the deformation of the protrusions 3. Thus, when a little pressure is applied, the apical parts of the protrusions 3 and their periphery are deformed to a small extent to provide a soft feeling, and when applying high pressure, not only the protrusions 3, but also the connecting sections 5 intended for the formation of barriers (comb-like sections), and small protrusions 9 t function of elastic support. As a result, even when pressure of a different level is applied to the top sheet 30 due to movement and mass of the carrier, the top sheet functionally "reacts" to this with the formation of an appropriate repulsive force, resulting in a feeling of softness and smoothness for the skin.

In addition, the protrusions 3 are not isolated, but are connected by connecting sections 5 intended for the formation of barriers (comb-like sections), so that even when the sheet is bent, the protrusions 3 are not slightly deformed irreversibly. As a result, even when the sheet undergoes significant compression or bending deformation due to skin irregularities or vigorous movements, after removing the load, the structure providing the connection of the protrusions 3 and the comb-shaped parts 5 is restored, and the sheet returns to its original soft state with sufficient thickness. In addition, due to the fact that the deformation of the protrusions 3 is reduced to an appropriate height, as described above, a viscous liquid or the like placed in the spaces 6 will not be easily squeezed out and their reverse flow is suppressed towards the skin contact surface, whereby maintained dry and clean when worn. The effects due to the interactions of the protrusions 3, the connecting sections 5, intended to form barriers (comb-shaped sections), and the small protrusions 9 according to the third embodiment, can also act in a similar way to the extent that the protrusions 3, the first connecting sections 11 and the second connecting the portions in the first embodiment correspond to the corresponding above-mentioned components.

13 is an enlarged sectional view of a main part of a profiled sheet in accordance with yet another embodiment (fourth embodiment) of the present invention. The cross section of the main part illustrated in FIG. 13 corresponds to the cross section illustrated in FIG. 3 with respect to the first embodiment. It illustrates the first connecting portion 11 with its further enlarged central portion. Nevertheless, their cross-sectional configurations differ from each other in the way they are shown schematically.

The upper laminate sheet 1 according to the fourth embodiment includes a first layer 1e on the surface side in contact with the skin, and a second layer 1f on the side of the surface not in contact with the skin. The fibers forming the first layer are thinner than the fibers forming the second layer. Although the specific fiber diameter of each layer can be determined appropriately, the fineness (E _1d ) of the fibers of the first layer is preferably in the range of 1.0 to 4.4 dtex, and more preferably in the range of 1.2 to 3, 3 dtex. The ratio of fineness (E _1d ) of the fibers used in the first layer to fineness (E _2d ) of the fibers used in the second layer, i.e. (E _1d / E _2d ), is preferably in the range of 10 to 70%, and more preferably in ranges from 20 to 60%.

The fineness (E _2d ) of the fibers forming the second layer 1f of the upper laminate is preferably in the range of 2.2 to 7.8 decitex and more preferably in the range of 3.3 to 5.6 decitex. The fineness (E _3d ) of the fibers forming the lower laminate sheet 2 is preferably in the range of 1.0 to 4.4 dtex, and more preferably in the range of 1.2 to 3.3 dtex. Although there are no particular restrictions on the ratio of fineness (E _2d ) of the fibers forming the second layer 1f of the upper laminate sheet to fineness (E _3d ) of the fibers forming the lower laminate sheet 2, i.e., the ratio (E _2d / E _3d ), this ratio is preferably in the range of 150% to 800%, and more preferably in the range of 150% to 500%.

As in the first embodiment described above, in the fourth embodiment, the top sheet 40 is shaped to have protrusions 3, connecting portions 5 for forming barriers (first connecting portions 11 and second connecting portions 12), and recesses 4 It is also possible, as in the third embodiment, to profile the sheet so as to form small protrusions 9 instead of the second connecting sections 12.

In this embodiment, the protrusions 3 have a rounded sectional shape substantially with a hill shape. More precisely, the side portions of the protrusions are not formed as vertical walls orthogonal to the lower laminate sheet 2, but as surfaces with a smooth inclination, as illustrated in the drawing. The shoulder portion 3b (see FIG. 3) of each protrusion is rounded. More precisely, despite the fact that there are no particular restrictions on the angle θ of the edge inclination (see FIG. 13), this angle is preferably in the range of 95 to 140 degrees and more preferably in the range of 100 to 130 degrees . In the present invention, the edge inclination angle θ is determined and measured as the angle formed by a straight line (i) obtained by cutting the protrusion with the razor tip from the top of the protrusion in a direction parallel to the X direction and extending from the top parallel to the sheet surface direction and the straight line (ii ) passing from the lateral part 3c. With the formation of a rounded edge (shoulder) in this way there will be no discomfort if the absorbent product is displaced due to movement of the carrier or the like, which is preferred.

Furthermore, by forming the side portion 3c in the form of a slope (i.e., by making a large angle θ), the area of the apical portion 3a of the protrusion can be reduced (see FIG. 3). By reducing in this way the area of the apical portion 3a of the protrusion that comes into direct contact with the skin of the carrier, the area of contact with the carrier can be reduced. As a result, it is possible to prevent the sheet, which contains the absorbed liquid, from entering the surface contact, which would cause a sticky feeling in the carrier, and due to the corresponding point contact, sufficient springing and a dry feeling to the touch can be ensured. In addition, when the absorbent article is displaced from a predetermined position, the discomfort caused by the friction of the upper sheet is reduced, resulting in an article that is excellent in terms of touch and wearing feel.

In the fourth embodiment, the upper laminate sheet is formed as a two-layer structure, and the thinness of each sheet is set at a certain level, so that it is possible to obtain a given configuration of the protrusions in a more stable manner. The function of ensuring this stability during profiling is performed as follows: in the fourth embodiment, when the protrusion containing the hollow space is formed, the upper laminate sheet is formed in two layers and a stiffness gradient is created in the sheet, so that it can be expected that the sheet will more easily be given configuration. In addition, when giving the protrusions 3 a certain shape by using gears to create a suction force, the method by which the surface of the sheet is held in tight contact due to this suction varies due to the gradient of the diameter of the fibers in the sheet, so that the bumpy configuration obtained in this way is easily stabilized to a given configuration.

In a fourth embodiment, the upper laminate sheet 1 and the lower laminate sheet 2 may be formed from the same type of fibrous material or different types of fibrous materials. Preferably, each sheet is formed from a sheet material substantially free of stretching and pulling. In this regard, each sheet may be substantially free of stretching and contracting in the MD direction of movement of the material in the machine and in the transverse direction CD, or it may be stretched and contracted in only one direction from the direction MD of the movement of material in the machine and the transverse direction of CD. In the case of a nonwoven material having extensibility in only one direction, it is preferable that the sheets be superimposed so that the stretching / contracting directions of the two sheets coincide with each other. Due to the use of such sheet material when performing profiling by means of a suction gear ring and drum, as described below, it is possible to perform profiling with a given configuration in a stable manner and with sufficient reproducibility.

In addition, as in the case of the fourth embodiment, by making the fibers of the outer first layer 1e of the upper laminate 1 forming the protrusions thinner than the fibers of the inner second sheet 1f, the protrusions can be slightly susceptible to crushing (crushing) and maintain a proper feel when touch and feeling of springing while wearing. It is contemplated that this can be achieved since the fibers of the inner second protrusion layer 1f have a large thickness, so that, in particular, the side portions of the protrusions will not be easily flattened during compression. In other words, the second layer 1f on the inner side of the protrusions serves to provide support for the protrusions 3 as a whole like a pillar (vertical column), which makes the protrusions relatively free from collapse. On the other hand, the apical parts of the protrusions can be deformed under the action of the corresponding elastic force, which makes it possible to achieve high-quality springing, as if bulk cotton was placed on the cylindrical part of the wall of high rigidity. When no compressive force is applied, a restoring force is applied due to the greater thickness of the fibers of the second layer, and an effective stiffness of the layer is ensured due to a synergistic effect along with a support function similar to a strut, and the initial configuration is easily restored after the protrusions are compressed. Thus, during compression, the protrusions 3 are elastically deformed while maintaining a given height and are easily restored to their original configuration when no compressive force is applied.

In addition, in the fourth embodiment, the fibers of the outer first layer 1e of the upper protruding laminate sheet are thinner than the fibers of the inner second layer 1f, whereby it is possible to provide very good performance in terms of liquid absorption or the like. This will be described more specifically. As explained above, the fibers of the second layer have a greater thickness than the fibers of the first layer, so that the gap between the fibers of the second layer usually increases to a greater extent than the gap between the fibers of the first layer. As a result, a zone is formed on the side of the second layer in which the fibers are sparse, so that, for example, unformed feces containing a large amount of liquid are absorbed and intensively accumulate. In particular, the solid part of unformed feces is drawn into the interior spaces 6 of the protrusions 3 for “shelter” in them, so that it is possible to reduce the discomfort caused when unformed feces come into direct contact with the skin of the wearer.

In addition, around the fastening points 4a of the recesses, the fibers of the first layer 1e and the second layer 1f forming the upper laminate sheet 1 are compressed, being somewhat elongated. Thus, around the fastening points 4 a, a strong liquid absorption function is provided due to the large capillary force. As a result, in the case of unformed feces containing a large amount of liquid, the liquid is concentrated around the recesses 4, and this part of the liquid is quickly directed to the absorbing element through the lower laminated sheet 2. In this example, as in the fourth embodiment, the sublayer (underlying layer) 21 is located between the top sheet 1 and the absorbent element (not shown in FIG. 13), as a result of which the fluid supply is further enhanced, which is preferred.

As indicated above, the diameter of the fibers of the inner second layer 1f of the upper laminate 1 forming the protrusions is large, and the gap between the fibers is usually large, so that even in the case of semi-solid unformed feces, they effectively accumulate in hollow spaces. In this example, the fibers forming the lower laminate sheet 2 are made with a diameter smaller than the diameter of the fibers of the second layer 1f of the upper laminate sheet, with the diameter of the fibers forming the lower laminate sheet 2 being approximately the same as, for example, the diameter of the fibers of the first layer 1e. In this case, three-dimensional profiling of the lower layered sheet 2 is not performed, so that the gap between the fibers does not increase, and unformed feces do not easily enter the absorbing element through the lower layered sheet 2. Thus, the solid part of the unformed feces will be effectively captured in spaces 6, with This makes it possible to quickly absorb only the liquid part into the absorbing element. That is, even in the case of unformed feces containing a large amount of liquid, there is the possibility of holding the solid part in the spaces 6 and preventing dirtying of the absorbing element, impairing the performance of the absorption function and the like to an excessive degree. On the other hand, there is the possibility of selectively moving only the liquid part into the absorbent element, which provides a very satisfactory feeling of cleanliness and dryness when worn for the wearer.

That is, as indicated above, the fibers forming the top sheet are specific for each layer. The gap between the fibers of the second layer is preferably made larger than the gap between the fibers of the first layer, and more preferably, the gap between the fibers of the first layer is larger than the gap between the fibers of the lower layer, as a result of which it is possible to ensure a good performance of the processing function, in particular for unformed feces containing a large amount of liquid. In the present invention, unless otherwise indicated, “distance between fibers” is the average distance between fibers in a given area of a sheet. The distance between the fibers is calculated based on the thickness and mass of the nonwoven material, and the structure of the fiber of the constituent canvas, and it is determined by the following formula.

[Mathematical Formula 1]

… Формула (1)The average distance between the fibers =

… Formula 1)

In formula (1), t is the thickness [mm] of the nonwoven material, w is the mass [g / m ² ] of the nonwoven material, and d is the fineness (denier) of the fibers forming the fibrous web. In the present invention, the distance between the fibers is preferably in the range of 70 to 100 μm in the first layer for the upper laminate and in the range of 120 to 160 μm in the second layer. The distance between the fibers is preferably in the range of 70 μm to 90 μm in the lower laminate layer.

In a fourth embodiment, when using a tensile nonwoven fabric, the degree of stretching in the stretching direction is preferably in the range of 105 to 200%, and more preferably in the range of 105 to 120%. In this case, the term "elongation" means that when the degree of elongation is, for example, 105%, elongation exceeding the elongation of 5% relative to the length in the direction of elongation of the material leads to rupture of the material or causes permanent deformation. In addition, the term “substantially non-extensible nonwoven fabric” means a material having a tensile strength of 105% or less, with a tensile or permanent deformation occurring when the material is stretched with a relative elongation of more than 5%. In this case, when the material is stretched or enlarged to double its original length, the degree of stretching is 200%. In addition, when the material is stretched to double its original length, the elongation is 100%.

As the non-woven material, a conventional non-woven material can be used. Examples of non-woven material include various carded fabrics, such as thermally bonded non-woven material, spunbond non-woven fabric, meltblown nonwoven fabric, non-woven fabric produced by liquid jets (hydro-entangling), and non-woven fabric obtained needle piercing. When bonding the upper laminate sheet 1 and the lower laminate sheet 2 together by hot melt, as described below, it is preferable that the nonwoven material contains hot-melt fibers. It is preferable to use fibers with a sheath / core structure, such as polyethylene terephthalate / polyethylene (PET / PE) or polypropylene / polyethylene (PP / PE) as thermally fusible (thermally bonded) fibers. In addition, it is preferable to perform processing of the nonwoven material to impart hydrophilicity by using a surfactant or the like. Of the fibers forming the upper laminate sheet 1 and the lower laminate sheet 2, a combination of fibers of polyethylene terephthalate / polyethylene (PET / PE) is the preferred combination.

Preferably, in the upper laminate sheet 1 of the upper sheet 40 of the fourth embodiment, the surface density of the outer first layer 1e is less than or equal to the surface density of the inner second layer 1f. As for the thickness, it is preferable that the thickness of the first layer is less than or equal to the thickness of the second layer. In addition, it is preferable that the surface density of the upper laminate sheet 1 is greater than or equal to the surface density of the lower laminate sheet 2. As for the thickness, it is preferable that the thickness of the upper laminate sheet 1 is greater than or equal to the thickness of the lower laminate sheet 2. As for the fiber fineness forming the upper laminate sheet 1 and the lower laminate sheet 2, it is preferable that the fibers forming the second layer 1f of the upper laminate sheet 1 have a greater thickness compared to the thickness of the fibers forming the lower lamellar sheet 2, or the same thickness as the thickness of the fibers forming the lower laminate sheet 2.

In the top sheet 40 of the fourth embodiment, the sublayer 21 is located in its lower part (see FIG. 13). Preferably, the top sheet 40 and the sublayer 21 are bonded together, for example, at intervals, so that it will not be possible for any liquid to remain in the top sheet. In order that the absorbent element can easily absorb liquid when the absorbent element is located under the sublayer 21, it is preferable that the bond is carried out, for example, by sparse bonding on the entire surface. The sublayer 21, which is located under the top sheet 40, is adapted to “buffer” stresses caused by any pressure applied from the side facing the skin (side of the top sheet). As a result, the protrusions 3 of the upper sheet with a three-dimensional shape will be made less prone to collapse, which makes it possible to achieve additional improvement in terms of sensation during touch and spring sensation.

In addition, in the fourth embodiment, due to the presence of the sublayer 21, the absorption and distribution of the liquid transported from the top sheet 40 can be improved. More precisely, this layer is effective for providing quick absorption of the liquid while suppressing the spread of the liquid in the surface material and accelerating the spread of the liquid in the absorbing element. . In this embodiment, the sublayer 21 includes two layers, that is, the upper layer 21e of the sublayer and the lower layer 21f of the sublayer. The fibers forming the upper layer 21e of the sublayer 21 are thicker than the fibers forming the lower layer 21f of the upper sheet to be placed thereon. As a result, when after the concentration of the liquid in the recesses 4 of the upper layer and its absorption to the side of the lower laminated sheet 2, the liquid should be moved further into the sublayer 21, it is possible to ensure the spread of the liquid in the direction of the surface of the sublayer. This is due to the functional characteristic that the fibers forming the upper layer 21e of the sublayer have a greater thickness than the fibers forming the lower layer 21f, so that the density of the upper layer 21e of the sublayer is still lower, which provides an increase in the propagation force relative to the force liquid suction. Thus, when the liquid is subsequently sucked into the lower layer 21f of the sublayer and the absorbent element, there is no saturation of the liquid unevenly distributed locally, and the liquid can be absorbed and held while spreading in the direction of the surface. As a result, the amount of retained liquid and the rate of absorption (absorption) into the absorbent article as a whole increase.

As the material of the sublayer 21, it is preferable to use a non-woven material (examples of which include non-woven materials made from fibers formed from a thermoplastic resin, such as polyolefin, like polyethylene or propylene, polyester and polyamide, and two-component fibers formed from two or more of these resins), cellulose or fibrous cellulose laid in the form of a sheet.

In a fourth embodiment, the fibers of the lower layer 21f of the sublayer are thinner than the fibers of the upper layer 21e of the sublayer. As a result, a higher density of the lower sublayer layer 21f is ensured compared with the density of the upper sublayer layer 21e, and the liquid once distributed in the upper sublayer layer 21e is rapidly absorbed into the lower sublayer layer 21f. Thus, the liquid received by the upper laminate sheet 1 of the upper layer is first concentrated in the recesses 4, and when this happens, the liquid is sucked into the lower laminate sheet 2 through the periphery of the bonding surface 4a. In addition, the liquid moves into the lower layer 21f of the sublayer while simultaneously propagating in the upper layer 21e of the sublayer. As a result, the liquid can be quickly directed to the entire absorbent element located under the sublayer. Thus, in this embodiment, due to the different “interaction” of the functional characteristics of the individual layers of the top sheet and / or the individual layers of the sublayer, it is possible to quickly move the liquid to the side of the absorbent element without ensuring that it will remain on the side of the surface of the upper sheet in contact with the skin .

The fineness (E _4d ) of the fibers forming the upper layer 21e of the sublayer is preferably in the range of 3.3 to 15 dtex and more preferably in the range of 5.6 to 10 dtex. Although there are no particular limitations regarding the ratio of fineness (E _3d ) of the fibers forming the lower laminate sheet 2 to fineness (E _4d ) of the fibers forming the upper layer 21e of the sublayer, i.e. (E _3d / E _4d ), this ratio is preferably in the range from 0.15 to 0.8, and more preferably in the range from 0.2 to 0.5. The fineness (E _4d ) of the fibers forming the lower layer 21f of the sublayer is preferably in the range of 2.0 to 5.6 dtex and more preferably in the range of 2.2 to 4.4 dtex. Although there are no particular restrictions regarding the ratio of the fineness (E _4d ) of the fibers forming the upper layer 21e of the sublayer to the fineness (E _5d ) of the fibers forming the lower layer 21f of the sublayer, i.e. (E _4d / E _5d ), this ratio is preferably in the range of 1.5 to 8, and more preferably in the range of 2 to 5.5.

There are no particular limitations regarding the method by which the upper sheet 21e of the sublayer and the lower sheet 21f of the sublayer are connected to each other by lamination and integrated. For example, joining in one piece can be carried out by treating with hot air after laying the upper layer and the lower layer on top of each other. The boundary between the upper layer 21e of the sublayer and the lower layer 21f of the sublayer is not clearly defined, and it may be an inclined mating surface.

Fig. 14 is a partially exploded schematic perspective view of a disposable diaper for which a top sheet 10 of the first embodiment is applied. The diaper illustrated in the drawing is a disposable diaper with a tape designed for infants. The diaper, visible from the inside (the side of the skin contact surface), is unfolded in the plane and bent to some extent. There is no doubt that instead of the top sheet 10 (first embodiment), you can use the top sheet 20, 30 or 40 (second, third or fourth embodiment) for the disposable diaper 100 of this embodiment.

The disposable diaper 100 of this embodiment has a liquid permeable top sheet 10 located on the surface of the skin contacting surface, liquid permeable, a back sheet 75 located on the surface of the skin noncontact, and an absorbent member 73, provided between the two above sheets. Preferably, the top sheet is located in the part where the release of fluid or the like, which is urine, or feces, or menstrual blood, or the like, in the case of hygiene products, that is, at least near the receiving allocation part of the absorbent product.

In this embodiment, a sublayer 21 is provided between the topsheet 10 and the absorbent member 73. The backsheet 75 is in a deployed state, with both its lateral edges being pulled together in the central part in the longitudinal direction to form a configuration substantially similar to an hourglass shape, and it may have one sheet or multiple sheets. In this embodiment, the back sheet 75 is provided with assemblies 72 for preventing lateral leakage, whereby it is possible to effectively prevent lateral leakage of liquid or the like at the junction of the baby's hips due to movement or the like. In the diaper of this embodiment, it is possible to further provide a functional structural part, sheet material or the like. On the back sheet 75, an upper sheet 10 and an absorbent member 73 are disposed, with the upper side of the absorbent member 73 wrapped in an upper sheet 10.

The diaper of this illustrated embodiment is a diaper with a tape, and a fastening tape 76 is provided in the valve portion from the rear side r. The tape 76 is attached to the part for fastening the tape (not shown) provided on the valve part from the f side of the abdomen, as a result of which there is the possibility of fastening and fixing the diaper in a predetermined position. In this case, the central part of the diaper is smoothly bent inward, while the absorbent element 73 extends from the femoral part to the lower abdomen of the baby, whereby the released substance can be properly absorbed and held by the absorbent element 73.

The profiled sheet of the present invention is applicable for different uses.

In a preferred embodiment, the profiled sheet of the present invention can advantageously be used as a top sheet of an absorbent article or the like, having a high absorption / retention capacity with respect to liquid or the like. In particular, in accordance with the profiled sheet of the present invention, it is possible to suppress or prevent the spread of excreted urine, unformed feces or the like on the surface causing leakage. In addition, when using the profiled sheet of the present invention, it is possible to suppress the backflow of excreted substances, such as feces, urine, sweat or the like, by adhering to the skin, thereby protecting the wearer's skin from a rash or the like (skin irritation) skin rashes or skin inflammation).

In addition, in a preferred embodiment, the profiled sheet of the present invention has the following excellent characteristics: possesses, along with the aforementioned functional characteristics, flexibility and springing; It is soft to the touch; possesses drape and preferably maintains a satisfactory sensation when it is felt for a long period of time.

In addition, in a preferred embodiment, the profiled sheet of the present invention has the property of sufficient permeability, in particular for highly viscous liquids. In addition, when using the profiled sheet of the present invention, there is no easy occurrence of a reverse fluid flow even when the upper sheet is compressed by the pressure of the body applied to it. In addition, the profiled sheet of the present invention has such excellent properties that even in the case of squeezing, the sheet easily recovers its thickness and even after attaching, the softness and dryness of the touch is preferably maintained for a long period of time, which allows to obtain a sheet with high breathability in the direction parallel to the surface of the sheet.

The present invention will be described in more detail based on the examples below, but the invention should not be construed as limited to these examples.

[Examples]

{Example 1, Comparative example 1}

1. Preparation of the test diaper sample

(Example 1)

As the non-woven material forming the upper layered sheet, we used obtained through passing air through, a non-woven material with a density of 18 g / m ² , formed by superimposing on each other two-component fibers with a sheath and a core having the following dimensions and density: 2.2 dtex × 51 mm and 6 g / m ² , and bicomponent fibers with a sheath and a core having the following dimensions and density: 4.4 dtex × 51 mm and 12 g / m ² , while in each of these fibers the core consisted of polyethylene terephthalate and the shell consisted of polyethylene . The top layer was bent in the direction MD of the movement of the material in the machine by profiling, and its density was increased so that after profiling it became equal to 22 g / m ² (the speed at which the top layer was unwound was increased by approximately 20% compared to the speed at which the lower laminated sheet was unwound). The nonwoven material forming the lower layered sheet was obtained through passing through air, a nonwoven material with a density of 18 g / m ² , formed by two-component fibers with a sheath and a core measuring 2.2 dtex × 51 mm, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene. By using these sheets, a top sheet (test material 1) was prepared in accordance with the first embodiment by using the device illustrated in FIG. 6-1. The top sheet thus obtained (test material 1) had a different sheet configuration similar to that illustrated in FIGS. 1-4. The height h _{t of the} protrusions was approximately 1.7 to 2.1 mm, and the height h _{0 of the} connecting portions for forming the barriers was approximately 0.6 to 1.0 mm. A predetermined portion of the test material sheet 1 was photographed in an enlarged state (with a 150x magnification) using an optical microscope (Digital HF Microscope VH-8000 (trade name) manufactured by Keyence Corporation). The ratio of the fiber density of the protrusions to the fiber density of the connecting portions intended for the formation of barriers, i.e. (D _t / D ₀ ), for the test material 1 obtained by this microscope image was approximately 0.5.

An absorbent element 1 was prepared, which had: an absorbent core with dimensions of 100 × 150 mm, wrapped with a thin material (formed from cellulose in an amount of 200 g / m ² and an absorbing polymer in an amount of 280 g / m ² ); a sublayer on the absorbent core (obtained by passing air jets through, non-woven material with a density of 40 g / m ² ) and the top sheet (test material 1) on it. Thus obtained, the absorbent element 1 with dimensions of 100 × 150 mm was placed on a moisture-permeable sheet having an outer laminated sheet with dimensions of 100 × 330 mm (a composite sheet of nonwoven material and a moisture-permeable sheet), as a result of which a test diaper sample 1 was prepared. In order to prevent leakage of cellulose and the absorbing polymer of the absorbing element and the poured artificial urine in the test sample 1 of the diaper, the surface of the absorbing element 1 at the periphery of the absorbing element 1 was hermetically closed by the outer laminated sheet so as to cover it by about 10 mm.

(Comparative example 1)

The non-woven material obtained by passing through the air was formed by superimposing on one another: a fibrous canvas forming an upper layered sheet with a surface density of 10 g / m ² from two-component fibers with a sheath and a core with dimensions of 2.0 dtex × 51 mm, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene and a fibrous canvas forming a lower layered sheet with a density of 15 g / m ² from a mixture of bicomponent fibers with a shell and core measuring 5.6 dtex × 51 mm, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene, and bicomponent fibers with a shell and core measuring 5.6 dtex × 51 mm, the core of which consisted of polypropylene and the shell of which consisted of polyethylene, while this mixture contained two types of bicomponent fibers in equal amounts. These sheets were superimposed and bonded together, resulting in a top sheet (test material C1) was obtained for comparison. The thickness of the top sheet (test material c1) was approximately 1 mm.

An absorbent example c1 was prepared having the same structure as example 1, except that instead of the top sheet (test material 1), a top sheet (test material c1) was used.

Thus obtained, the absorbing material c1 with dimensions of 100 × 150 mm was placed on a moisture-permeable sheet of the outer laminate sheet (composite sheet of non-woven material and a moisture-permeable sheet) with dimensions of 100 × 330 mm, as a result of which the test sample c1 of the diaper was prepared.

As in Example 1, also in the test example c1 of the diaper, the peripheral surface of the absorbent element c1 was coated with an outer laminate sheet of approximately 10 mm so that the absorbent element of the cellulose, the absorbent polymer, and the poured artificial urine did not leak.

2. Test pads to determine skin moisture on the forearm of an adult

By using the test sample 1 of the diaper of Example 1 and the test sample c1 of the diaper of Comparative Example 1, obtained in this way, a type test was carried out in the form of overlays using the following methods (1) - (3) to assess the degree of skin moisture (skin hydration) on the forearm of an adult after lining.

(1) 20 ml of artificial urine, maintained at a temperature of 40 ° C, was poured onto each of the tested samples 1 and c1 of the diaper, in the form of pads.

(2) An overlay from the test sample c1 of the diaper of Comparative Example 1 was wound around one arm, and an overlay from the test sample 1 of the diaper of Example 1 was wound around the other arm. In this case, the pads were wound so as to combine that part of the pads of the test sample 1 or c1 of the diaper in which the infusion was carried out with the measured portion of the forearm, while the end parts of the pads were fixed in a predetermined position by the tape. In addition, adhesive tape was attached to the periphery of the pad so that there was no gap between the pad and the hand.

(3) After 3 hours, the patch was removed and the skin moisture in the measured area was measured immediately thereafter using the Corneometer MPA5 instrument (trade name; manufactured by C + K GmbH).

(Results)

The degree of skin moisture in the measured area before winding the lining of the test diaper sample was 30. In the case of the test sample c1 of the diaper according to comparative example 1, the degree of skin moisture after applying the lining was 82.4, which means an increase in the degree of skin moisture by 52.4. On the other hand, in the case of the test sample 1 of the diaper of Example 1, the degree of skin moisture after applying the patch was 68.5, which means an increase in the degree of skin moisture by 38.5. The above values were average values obtained for seven subjects, which is also true for the following.

As is known, when the aforementioned value exceeds 75, a wet skin sensation is created, while when the value is 75 or less, a dry feeling is created. Thus, it was found that when using the pad from the test sample 1 of the diaper of Example 1, there was no sensation of moisture, but there was a feeling of dry skin.

3. Evaluation of the reduction of flattening of the skin structure during skin swelling by an indirect method (imprint method)

An imprint of the skin was obtained on the skin surface after testing with the patch by using a silicone imprint to obtain a skin impression (trade name: ABS-01 Sky Blue; manufactured by Asahibiomed Co., Ltd.), and the surface roughness Ra was measured by using an analysis instrument (Skin Visiometer SV500, (trade name), manufactured by C + K GmbH).

(Results)

The surface roughness was 0.008 μm on the skin print obtained by using the lining of the test sample c1 of the diaper of comparative example 1, while the skin roughness obtained by using the lining of the test sample of the diaper 1 of example 1, the surface roughness was quite significant and amounted to 0.011 μm, which indicates a decrease in flattening of the skin structure.

It is known that the skin structure is smoothed when the skin swells due to moisture. Based on this, it was found that when using the patch from the test sample 1 of the diaper according to example 1, the skin was less prone to swelling compared to the patch from the test sample c1 of the diaper according to comparative example 1.

4. Assessment of the thickness of the stratum corneum during swelling of the skin

The thickness of the stratum corneum after the patch test was measured by low coherence optical interferometry (optical coherence tomography) (trade name: Skin Dex 300; manufactured by ISIS).

(Results)

The thickness of the stratum corneum of the skin before winding the lining of the test diaper sample was 13.7 μm. The thickness of the stratum corneum of the skin when winding the lining of the test sample c1 of the diaper according to comparative example 1 was 19.2 μm, which means an increase in thickness by 9.4 μm. On the other hand, the thickness of the stratum corneum of the skin when winding the lining of the test sample 1 of the diaper of example 1 was 23.1 μm, which means an increase in thickness by 5.5 μm. Based on this, it can be established that when using the lining of the test sample 1 of the diaper of Example 1, the increase in the thickness of the stratum corneum of the skin due to swelling of the skin was reduced.

As you know, with an increase in the thickness of the stratum corneum of the skin due to swelling of the skin, the barrier function of the skin is weakened, which prevents the penetration of an external foreign substance. You can see that when using the lining from the test sample 1 of the diaper according to example 1, the barrier function of the skin is less weakened than when using the lining from the test sample c1 of the diaper according to comparative example 1.

5. Group test

The test sample 1 of the diaper of Example 1 was used for infants, and an evaluation test was conducted for a group of 14 members (mothers with children using disposable diapers). The majority opinion was used as the results of an expert assessment to evaluate the test sample 1 in comparison with the industrially manufactured and commercially available products that they currently use.

(1) The feeling of feeling (by hand) the surface of the test sample 1 in contact with the skin was similar to the feeling of feeling the tissue (material), and it was smooth and made the skin feel like cotton. From the point of view of appearance, it seemed to be highly absorbent and free from backflow of water.

(2) After urination, the palm touched directly the surface area of the diaper to check the sensation it created. The result was that when using test sample 1, the sensation of dryness was more pronounced compared to industrially manufactured and commercially available products, while less moisture adhered to the hand. In addition, there was no moisture left on the skin of the buttocks of the baby, and the stickiness due to urine, unformed feces or the like was reduced.

(3) When using the test sample 1 of the diaper, the amount of feces adhering to the buttocks of the baby was less than in the case of industrially manufactured and commercially available products. In contrast, feces adhered to the surface of the diaper in contact with the skin. In addition, feces adhering in this way did not spread due to the absorption of water by the test diaper sample 1, but remained in a state of hardened sediment from the excreted substance. As a result, feces adhering to the baby’s buttocks could be easily wiped off.

{Example 2, comparative example 2}

(Example 2-1)

As the non-woven material forming the upper layered sheet, we used obtained through passing air through, a non-woven material with a density of 18 g / m ² , formed by superposing bicomponent fibers with a sheath and core, having the following dimensions and density: 2.2 dtex × 51 mm and 6 g / m ² , and bicomponent fibers with a sheath and a core having the following dimensions and density: 4.4 dtex × 51 mm and 12 g / m ² , while in each of these fibers the core consisted of polyethylene terephthalate and the shell consisted of polyethylene. The top layer was bent in the direction MD of the movement of the material in the machine by profiling, and its density was increased so that after profiling it became equal to 22 g / m ² (the speed at which the top layer was unwound was increased by approximately 20% compared to the speed at which the lower laminated sheet was unwound). The nonwoven material forming the lower layered sheet was obtained through passing through air, a nonwoven material with a density of 18 g / m ² , formed by two-component fibers with a sheath and a core measuring 2.2 dtex × 51 mm, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene. By using these sheets, a top sheet (test material 2-1) was prepared according to the third embodiment by using a device similar to that illustrated in FIG. 6-1, wherein the first drum and second drum had a tooth engagement pattern similar to that illustrated in FIG. .6-3 (distance 94: 3.2 mm; distance 97: 1 mm; distance 98: 2 mm; length 99: 0.8 mm, width 100: 1 mm and length 101: 0.8 mm). The top sheet thus obtained (test material 2-1) had a different sheet configuration similar to that illustrated in FIGS. 11 and 12. The height h _{t of the} protrusions was approximately 1.7 to 2.1 mm, and the height h _{0 of the} comb-like portions was approximately from 0.6 to 1.0 mm. Fig is a map of the analysis of the surface configuration in the form of a perspective view obtained by measuring and visualizing the surface configuration from the side of the upper laminated sheet of this top sheet (test material 2-1) using a microscope for surface profilometry (VHX-900 (trade name) , manufactured by Keyence). In the figure, the symbol “t” denotes protrusions, the symbol “b” denotes recesses, the symbol “o” denotes ridge-shaped portions (connecting portions for forming barriers), and the symbol “s” denotes small protrusions. The dimensional unit shown as “um” in the figure means “μm”.

(Example 2-2)

As the non-woven material forming the upper layered sheet and the lower layered sheet, a non-woven fabric with a surface density of 18 g / m ² formed from bicomponent fibers with a sheath and a core having the following dimensions of 2.2 dtex × 51 was used. mm, the core of which consisted of polyethylene terephthalate and whose shell consisted of polyethylene. The top layer was bent in the direction MD of the movement of the material in the machine by profiling, and its density was increased so that after profiling it became equal to 22 g / m ² (the speed at which the top layer was unwound was increased by approximately 20% compared to the speed at which the lower laminated sheet was unwound). From these sheets, a top sheet was prepared in accordance with the third embodiment (test material 2-2) by using a device similar to that illustrated in FIG. 6-1, wherein the first drum and second drum had a tooth engagement pattern similar to that illustrated in FIG. 6-3 (distance 94: 3.2 mm; distance 97: 1 mm; distance 98: 2 mm; length 99: 0.8 mm, width 100: 1 mm and length 101: 0.8 mm). The top sheet thus obtained (test material 2-2) had a different sheet configuration similar to that illustrated in FIGS. 11 and 12. The height h _{t of the} protrusions was approximately 1.3 to 1.7 mm, and the height h _{0 of the} comb-like portions was approximately from 0.4 to 0.7 mm.

(Comparative example 2-1)

The non-woven material obtained by passing through the air was formed by laying on top of each other: a fibrous canvas forming an upper layered sheet with a density of 16 g / m ² of bicomponent fibers with a sheath and core with dimensions of 7.7 dtex × 51 mm, core which consisted of polyethylene terephthalate and whose sheath was composed of polyethylene, and the nonwoven forming the bottom laminate sheet with a density of 24 g / m ² bicomponent fibers of sheath-core, having a size of 3.3 dtex × 51 mm whose core with toyalo of polyethylene terephthalate and whose sheath was composed of polyethylene. These sheets were superimposed and fastened together, as a result of which a top sheet (test material c2-1) was obtained for comparison. The thickness of the top sheet (test material c2-1) was approximately 1 mm.

(Comparative example 2-2)

The top sheet (test material c2-2) was obtained by superimposing and ultrasonic welding together two sheets of obtained through passing air through, a non-woven material with a density of 20 g / m ² as non-woven materials forming the upper laminated sheet and the lower laminated sheet each non-woven material was formed from bicomponent fibers with a sheath and a core with dimensions 2.2 dtex × 51 mm, the core of which was formed from polyethylene terephthalate and whose sheath was formed from polyethylene. The thickness of the top sheet (test material c2-2) was approximately 1 mm.

{Test to determine the return of fluid to the surface layer}

Each of the top sheets (test materials), the masses of which were measured, was placed on an absorbing material (a laminate formed from fluffy powdered cellulose and a polymer with high absorption capacity, while the density of cellulose and polymer was 257 g / m ^2, respectively). Then, 80 g of artificial urine was poured into the central part of the top sheet by using a metering pump. After pouring, the top sheet was left in this state for 10 minutes. After that, the mass of the upper sheet was measured and the mass was subtracted from it before evaluation. The value thus obtained was considered as the amount of liquid remaining in the surface layer of the nonwoven material. In the case where the remaining amount of liquid is 300 mg or less, the necessary condition from the point of view of practical use is satisfied, and, in addition, with a value of 150 mg or less, the necessary condition from the point of view of practical use can be satisfied to a greater extent.

{Test to determine lateral breathability}

Each of the top sheets (test materials) was measured as follows to determine the volume of air passing in a direction parallel to the surface of the sheet under a pressure of 35 g / m ² .

Initially, the thickness Th1 of the top sheet when a load of 35 g / m ² was applied was measured by using a compression testing machine in accordance with KES (KES - Kawabata Evaluation System - Kawabata system for assessing the mechanical properties of fabrics) (KES FB- 3 AUTO-A (trade name) with a round contact part (with an area of 2 cm ² ), manufactured by KATO TECH Co., Ltd.).

The top sheet, the thickness of which was measured, was held between the square first acrylic plate having a square hole in the center, one side of which was 10 mm (dimensions: 50 mm × 50 mm × 3 mm), and the second acrylic plate, which was the same like the first acrylic plate, except that it had no hole, while the surface of the top sheet directed to the skin of the carrier was on the side of the first acrylic plate. This kit was installed under the gasket of a Gurley test device (type B) as defined in the “Gurley tester method” according to JIS P 8117 (JIS - Japanese Industrial Standard), with the side of the first acrylic plate facing up and compression was performed until until the thickness of the top sheet decreased to Th1.

Then, air was introduced through an aperture into the central part of the top sheet held with a thickness of Th1, and the time interval necessary for introducing 300 ml of air was measured.

After that, the amount of introduced air (cm ³ ) per unit area (1 cm ² ) of the hole was calculated in one second. The result of this test for determining lateral air permeability shows the ease with which air passes over the top sheet, that is, the degree to which the top sheet is free from becoming fogged up from steam. When lateral air permeability is characterized by a value of 30 cm ³ / s or more, the necessary condition from the point of view of practical use can be satisfied at a higher level.

{Thickness in accordance with the Kawabata system for assessing the mechanical properties of tissues (KES)}

Each of the top sheets (test materials) was measured to determine the thickness under a load of 0.5 g / cm ² and a load of 50 g / cm ² applied to it (the thickness of the sample was obtained by adding the thickness of the lower laminated sheet with a height h _{t of the} protrusions) by use of a compression testing machine in accordance with KES (KES FB-3 AUTO-A (trade name) with a round contact part (with an area of 2 cm ² ), manufactured by KATO TECH Co., Ltd.). The greater the value of this thickness, the more satisfactory springing is maintained when the diaper is actually worn. More precisely, the necessary condition from the point of view of practical use can be satisfied when the thickness in accordance with KES is 1.2 or more under a load of 0.5 g / cm ² , when the thickness in accordance with KES is 0.8 or more under load 20 g / cm ² and when the thickness according to KES is 0.5 or more under a load of 50 g / cm ² .

{Test for determination of compressive hardness in accordance with the Kawabata system for assessing the mechanical properties of tissues (KES)}

Each of the top sheets (test materials) was measured to determine the compressive hardness under a load of 50 g / cm ² .

Measurement to determine the compression characteristics was performed on the top sheet by squeezing it to reach a load of up to 50 g / cm ² by using a compression testing machine in accordance with KES (KES FB-3 AUTO-A (trade name) with a round contact part ( with an area of 2 cm ² ), manufactured by KATO TECH Co., Ltd.). In the above test for determining hardness in compression (KES), the LC value characterizes compressibility under the action of a small force. When it is 0.75 or less, the necessary condition from the point of view of practical use can be satisfied. The value of WC characterizes softness. When it is 0.5 gram-force · cm / cm ² or more, the necessary condition from the point of view of practical use is satisfied. When it is 1 gram-force · cm / cm ² or more, the necessary condition from the point of view of practical use can be satisfied to a greater extent. The value of RC characterizes the ability to recover after compression. When it is 30% or more, the necessary condition from the point of view of practical use can be satisfied to a greater extent.

{Test for drapeability, B's ability to bend according to the Kawabata system for assessing the mechanical properties of tissues (KES)}

Each of the top sheets (test materials) was measured to determine the bending moment when it was given a fixed curvature (± 2.5 cm ^-1 ).

A piece with dimensions of 20 cm × 10 cm (size in the direction MD of material movement in the machine × size in the transverse direction CD) was cut from the top sheet to obtain a sample. A measurement was performed to determine the bending moment when a fixed curvature (± 2.5 cm ⁻¹ ) was obtained for the sample thus obtained in the direction MD of the movement of the material in the machine and in the transverse direction CD by means of a bending test device in accordance with KES (KES FB- 2 AUTO-A (trade name), manufactured by KATO TECH Co., Ltd.). The magnitude of the bending moment with a curvature of ± 2.5 cm ^-1 is indicated by “B '".

In the above test to determine drape and bending ability B 'according to KES, the smaller the value B', the easier it is to bend the sheet. When the value is 0.35 gram-force · cm / cm ² or less in one direction (the direction MD of the movement of the material in the machine), the necessary condition from the point of view of practical use is satisfied. When the value is 0.2 gram-force · cm / cm ² or less, the necessary condition from the point of view of practical use is satisfied to a greater extent. When the value is 0.20 gram-force · cm / cm ² or less in the other direction (the transverse direction CD), the necessary condition from the point of view of practical use is satisfied.

{Test to determine the presence or absence of buckling (part half folded in the direction MD of the movement of the material in the machine)}

Each of the top sheets (test materials) was half folded (in the MD direction of movement of the material in the machine) by using a ruler as a reference point, and the condition of the half-folded part during opening was checked. When the assessment [criteria described below] is a rating of “○” or better, the necessary condition from the point of view of practical use is satisfied. When the assessment is a rating of “○○” or better, the necessary condition from the point of view of practical use is satisfied to a greater extent.

“×”: There are many folds, wrinkles and corners, and the fold is firm to the touch.

“∆”: There are folds with many remaining wrinkles, and a slight hardness of folds (folds) is felt.

“○”: Although there are folds, there are no wrinkles. Bend hardness is rarely felt.

“○○”: No folds (folds), while maintaining the original state. The firmness of the folds (folds) is not felt at all.

{Test for sensation of touch}

The top sheet of the diaper, which was tested to determine the amount of fluid remaining in the surface layer, was tested in which it was directly touched with the palm of the hand to test the sensation of touch. The palm was also touched directly on the surface of the top sheet (the surface of the top layer) before being included in the diaper, and the touch sensation was expertly evaluated in accordance with the following criteria. An expert assessment was carried out by three or more people, and the majority opinion was regarded as the result of an expert assessment. When people's opinions diverged, an opinion expressing an interim assessment was taken as the result of an expert assessment. When the assessment is a rating of “○” or better, the necessary condition from the point of view of practical use is satisfied. When the assessment is a rating of “○○” or better, the necessary condition from the point of view of practical use is satisfied to a greater extent.

“×”: Solid. There is a feeling of resistance (a feeling of roughness).

“∆”: A bit hard. There is a slight sensation of resistance (a feeling of roughness).

“○”: To some extent soft. There is a feeling to some extent of a smooth [surface].

“○○”: Soft, and there is a feeling of smoothness.

Table 1 Test Material 2-1 Test Material 2-2 Test material c2-1 Test material c2-2 Weight (g / cm ² ) 42.1 41.6 40.8 39.5 The return of fluid to the surface (mg) 130 154 390 185 Breathability in the lateral direction (cm ³ / s) 84 79 28 twenty Thickness according to KES (mm) 0.5 g / cm ² 1.87 1.49 0.93 0.83 20 g / cm ² 1.01 0.92 0.45 0.34 50 g / cm ² 0.65 0.53 0.38 0.28 KES Compressive Hardness LC 0.60 0.71 0.32 0.29 WC 1.81 1.71 0.44 0.40 RC 46.4 41.6 66.1 62.0 Drapeability characteristics, Bˊ bending ability according to KES In the direction of MD (the direction of movement of the material in the machine) 0.185 0.196 0.366 0.136 Transverse CD 0.109 0.119 0.133 0,050 Bulging (half folded in the MD direction) ○○ ○○ ∆ ○ Sense of touch ○○ ○○ ∆ ○

From the above results, it can be seen that, compared with comparative examples (test materials c2-1 and c2-2), the top sheets according to the third embodiment (test materials 2-1, 2-2) had definitely better liquid return to surface and lateral breathability. In addition, it can be seen that, compared with comparative examples (test materials c2-1 and c2-2), the top sheets in accordance with the third embodiment (test materials 2-1, 2-2) had better results of evaluating the properties of the sheets (when a test to determine thickness in accordance with KES, a test to determine hardness in compression, a test to determine drape, a test to determine the presence or absence of buckling, and a test to assess the sensation of touch). In addition, it can also be seen that the top sheets according to the third embodiment (test materials 2-1, 2-2) easily took the shape of a skin contour and provided a soft and smooth texture.

{Example 3}

As a non-woven material forming the first sheet, a two-layer sheet (upper layered sheet) was provided, which was formed by bonding together the first layer of a through-air obtained non-woven material with a density of 6 g / m ² , which was formed from bicomponent fibers with a shell and a core with a characteristic of 2.2 dtex, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene, and a second layer of non-woven fabric obtained by passing air through and through lotnostyu 12 g / m ^2, which was formed of bicomponent fibers having a sheath and core of the characteristic of 4.4 dtex whose core was composed of polyethylene terephthalate and whose sheath was composed of polyethylene. The thickness of the upper laminated sheet was 0.6 mm. As the nonwoven material forming the lower layered sheet, we used airtight through, a nonwoven material with a density of 18 g / m ² , which was formed from two-component fibers with a sheath and a core with a characteristic of 2.2 dtex, the core of which consisted of polyethylene terephthalate and the shell of which consisted of polyethylene. The thickness of the lower laminated sheet was 0.6 mm. By using these sheets, a top sheet (test material 3-1) was prepared in accordance with the fourth embodiment by using the device illustrated in FIG. 6-1. In the sheet thus obtained (test material 3-1), the height h _{t of the} protrusions was 1.4 mm, the width w _{t of the} protrusions in the X direction was 4.0 mm, and the width w _{b of the} fastened portions (recesses) was 1.0 mm.

The top sheets (test materials 3-2 to 3-8) were prepared in the same way as test material 3-1, except that the fineness of the fibers used in the upper laminate and the lower laminate, the surface density of the sheets and air temperature passed through the first layer of the upper laminated sheet were changed as shown in table 2. In the table, the symbol “×” means receiving the first layer of a single-layer structure by using only this layer as the outer layer without using any inner layer.

Disposable diapers were prepared by using sheets (test materials) as top sheets, with the top laminate being on the skin contact surface. As an absorbing element, a multilayer fibrous body was used, formed from fluff pulverized pulp and a polymer with a high absorption capacity. The cellulose density was 257 g / m ² and the polymer density was 257 g / m ² . Each sheet of test material was located on the surface of this absorbent element. A moisture permeable film with a density of 20 g / m ² was used as the outer shell element. The following tests were carried out for each test material by using disposable diapers thus obtained.

{Test to determine the amount of fluid remaining in the surface layer}

Each diaper was placed on a horizontal stand with its top sheet facing up. A rectangular frame with internal dimensions of 20 cm × 10 cm was placed on it. The contours of the inner side of the frame were outlined with a pen with oil-based ink, which ensured that the configuration of the inner side of the frame was reproduced on the top sheet. After that, 200 g of artificial urine was evenly poured into the frame. After pouring, the sheet was left in this state for 10 minutes. The frame was removed 1 minute after the fill took place. After being left in this state for 10 minutes, the top sheet was cut along the reproduced configuration of the frame, and its mass was measured. After that, the nonwoven fabric cut in this way was held between sheets of kitchen paper towels, and in this state it provided one passage and return through a press (calender), as a result of which artificial urine was absorbed by sheets of kitchen paper towels. This operation was performed twice. The mass of non-woven material after absorbing artificial urine was measured again, and this mass was subtracted from the mass of non-woven material obtained first by measurement. The obtained value was considered as the amount of liquid remaining in the surface layer of the nonwoven material. The smaller this value, the more the requirements of the medium can be satisfied.

{Test for sensation of touch}

The top sheet of the diaper, which was tested to determine the amount of fluid remaining in the surface layer, was tested in which it was directly touched with the palm of the hand to test the sensation of touch. The palm was touched directly on the surface of the top sheet (the surface of the top layer) before being included in the diaper, and the touch sensation was expertly evaluated in accordance with the following criteria. An expert assessment was carried out by three or more people, and the majority opinion was regarded as the result of an expert assessment. When people's opinions diverged, an opinion expressing an interim assessment was taken as the result of an expert assessment. “×”: Solid, and there is a feeling of resistance (a feeling of roughness). “∆”: A bit hard, and there is a faint sense of resistance (a feeling of roughness). “○”: To some extent soft, and there is a feeling to some extent smooth [surface]. “○○”: Soft, and there is a feeling of smoothness.

{Test to determine the stability of the configuration}

The upper sheets (test materials) were measured to determine the thickness of the sample obtained by summing the thickness of the lower laminate sheet and the height h _{t of the} protrusions (FIG. 2) when a load of 2.5 kPa was applied to them by using KES Compressor (KES FB- 3 AUTO-A (trade name) with a round contact part (area: 2 cm ² )). The greater the value of this thickness, the more satisfactory is the springing supported by the actual wearing of the diaper. The larger this value, the higher the degree to which the media requirement can be satisfied.

{Measure the angle of the edge}

The angle formed by a straight line obtained by cutting the protrusion 3 with a razor tip from its top in a direction parallel to the X direction and passing from the top parallel to the X direction, and a straight line passing from the wall portion 3c, was measured as the angle of inclination edges (see figure 1, 2). The larger this value, the more satisfying is the sense of touch that the wearer may experience.

table 2

Test material 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 Upper
layered sheet The first
Layer Resin PET / PE ← ← ← ← ← ← ← Tonina
dtex Coaxial
2.2 ← ← ← Coaxial
2.2 ← Offset 4.4 Coaxial5.6 Density,
g / m ² 6 9 6 9 eighteen eighteen eighteen eighteen Second
layer Resin PET / PE ← ← ← Tonina
dtex Offset
4.4 ← Coaxial
5,6 ← Density,
g / m ² 12 9 12 9 Bottom layered
sheet Resin PET / PE ← ← ← ← ← ← ← Tonin, detx 2.2 ← ← ← ← Density, g / m ² eighteen ← ← ← ← ← ← ← Through air temperature, ° С 129 ← ← ← 133 129 133 133 Configuration stability (thickness, mm) 0.62 0.60 0.66 0.61 0.58 0.53 0.68 0.75 The amount of liquid remaining in the surface layer, g 0.11 0.12 0.17 0.18 0.27 0.25 0.11 0.17 Sense of touch oo oo about about about oo ∆ ∆ The angle of the edge, ° 110 113 115 120 93 99 125 132

As can be seen from the results shown in table 2, the tested materials 3-1 - 3-8 satisfactorily satisfied the level of requirements from the point of view of each position of the upper sheet. First of all, it can be seen that the upper sheets in accordance with the fourth embodiment (test materials 3-1 to 3-4), in which the upper laminated sheet had a two-layer structure, met the necessary condition from the point of view of practical use to a higher degree for all stability parameters of the protrusion configuration, the effect of reducing the amount of liquid remaining in the surface layer, and sensation during touch. In particular, it can be seen that by adjusting the thinness of the first layer and the second layer forming the upper laminated sheet, it is possible to provide a very satisfactory sensation during touch and noticeably enhance the effect of reducing the amount of liquid remaining in the surface layer (test materials 3-1, 3-2 )

{Example 4}

(Example 4-1)

The top sheet according to the first embodiment, in which the top layer and the bottom layer, each of which had a single layer structure, were fastened together with a 6-point weld joint pattern, was prepared by using a process device similar to that illustrated in FIG. 6-1 , and a diaper for babies was prepared (test material 4-1) by using this top sheet. The fineness of the fibers of the upper layer of the upper sheet was 2.2 decitex, and the fineness of the fibers of the lower layer of the upper sheet was 2.2 decitex. The spacing between the fibers in the obtained upper layer was 100 μm, and the spacing between the fibers of the lower layer was 55 μm. The thickness of the upper layer of the upper sheet was approximately 70 μm, and the thickness of its lower layer was approximately 50 μm. The distance between adjacent protrusions was approximately 2.5 mm, and the height of the protrusions was approximately 1.3 mm.

For test material 4-1, the assessment was performed by a group of six members (mothers with children using disposable diapers) regarding the appearance and sensation of touching the side of the top sheet (inner side of the diaper) of the test material. The results were as follows: the test material was found to be satisfactory from the point of view of practical use regarding the appearance (softness, smoothness and feeling of dryness) of the side of the diaper with the surface in contact with the skin where the top sheet was located.

(Example 4-2)

The top sheet according to the fourth embodiment was prepared in the same way as the test material 4-1, except that the top layer of the top sheet had a two-layer structure having a first layer and a second layer and a diaper for babies (test material 4- 2) was prepared using this top sheet. The fineness of the fibers of the first layer of the upper layer of the upper sheet was 2.2 decitex, the fineness of the fibers of the second layer was 4.4 decitex, and the fineness of the fibers of the lower layer was 2.2 decitex. The gap between the fibers in the first layer of the obtained upper layer was 90 μm, the gap between the fibers of the second layer was 140 μm, and the gap between the fibers of the lower layer was 55 μm. The thickness of the upper layer, the thickness of the lower layer, the distance between adjacent protrusions and the height of the protrusions of the upper sheet of the test material 4-2 were approximately the same as the corresponding parameters of the test material 4-1.

A group assessment test similar to the test described above was conducted for test material 4-2. The results were as follows: the diaper from test material 4-2 was rated as satisfactory or very satisfactory in terms of practical use in terms of appearance (softness, smoothness and a feeling of dryness) when viewed from the surface in contact with the skin where the top sheet was located . In addition, the sense of touch was noticeably better compared to the test material 4-1, and the feeling of touch part of the top sheet of the diaper from the test material 4-2 was evaluated at a level of very satisfactory from the point of view of practical use in relation to all evaluation positions, then there is softness, smoothness and a feeling of dryness.

{Example 5}

(Test material 5-1)

Through the use of the technological device illustrated in FIG. 6-1, a top sheet according to a fourth embodiment was obtained in which an upper layered sheet having a first layer on the surface contacting surface and a second layer on the non-contacting surface with the skin, and the lower laminated sheet were bonded together with the formation of a 6-point pattern of the welded joint. A diaper for infants was then prepared (test material 5-1), in which this top sheet was superimposed on the absorbent element. An absorbing element was used as an absorbing element, obtained by wrapping a composite multilayer fibrous body (mass) of fluffy pulped pulp and a polymer with a high absorption capacity with a thin material (fabric). The density of the fluff pulverized pulp was 215 g / m ² and the density of the high absorbency polymer was 300 g / m ² . In this case, the non-skin surface (lower surface) of the top sheet and the skin surface (upper surface) of the absorbent element were not bonded together, while these two surfaces were attached to the back sheet and they were only attached to the edge portions . The fineness of the fibers of the first layer of the upper laminated sheet of the upper sheet was 2.2 dtex, the fineness of the fibers of the second layer of the upper laminated sheet was 4.4 decitex, and the two layers were combined into one sheet by hot air treatment after applying the upper laminated sheet and the lower laminated sheet each to a friend. The fineness of the fibers of the lower laminate sheet of the upper sheet was 2.2 dtex. The thickness of the upper laminate sheet of the obtained upper sheet was approximately 70 μm, and the thickness of the lower laminate sheet of the upper sheet was approximately 50 μm. The width w _{t of the} protrusions was approximately 4.0 mm, the width w _{b of the} recesses was approximately 1.0 mm, and the height h _{t of the} protrusions was approximately 1.4 mm.

(Test material 5-2)

A diaper for infants (test material 5-2), in which the sublayer was located between the top sheet and the absorbent element, was prepared in the same way as the test material 5-1. An absorbing element was used as an absorbing element, obtained by wrapping a composite multilayer fibrous body (mass) of fluffy pulped pulp and a polymer with a high absorption capacity with a thin material (fabric). The density of the fluff pulverized pulp was 215 g / m ² and the density of the high absorbency polymer was 300 g / m ² . In this case, the contact surfaces of the superimposed top sheet, the sublayer and the absorbent element were not bonded together, and they were attached to the back sheet, while they were attached only at the edge sections. The sublayer had a two-layer structure, and it consisted of the upper layer of the sublayer on the side of the skin contacting surface and the lower layer of the sublayer, which were combined by bonding by treatment with hot air after applying the upper layer and the lower layer to each other. The fineness of the fibers of the upper layer of the sublayer was 7.8 decitex, and the fineness of the fibers of the lower layer of the sublayer was 3.3 dtex. The sublayer thickness was approximately 0.85 mm.

(Test material 5-3)

A diaper for infants (test material 5-3) was prepared in the same way as test material 5-1, except that the fineness of the fibers forming the second layer of the upper laminate of the upper sheet was changed to 2.2 dtex. Thus obtained, the test material was tested to determine the amount of liquid remaining in the surface material and the area of distribution of the liquid in the surface material. The thickness of the upper layer, the thickness of the lower layer, the width of the protrusions, the width of the recesses and the height of the protrusions of the upper sheet of the test material 5-3 were approximately the same as the corresponding characteristics of the test material 5-1.

(Test material 5-4)

A baby diaper (test material 5-4) was prepared in the same way as test material 5-2, except that the fineness of the fibers forming the second layer of the upper laminate of the upper sheet was changed to 2.2 dtex. Thus obtained, the test material was tested to determine the amount of liquid remaining in the surface material and the area of distribution of the liquid in the surface material. The thickness of the upper layer, the thickness of the lower layer, the width of the protrusions, the width of the recesses and the height of the protrusions of the upper sheet of the test material 5-4 were approximately the same as the corresponding characteristics of the test material 5-1.

(Test material 5-5)

The diaper for infants (test material 5-5) was prepared in the same way as test material 5-4, except that the fiber fineness of the upper laminate of the sublayer was changed to 3.3 dtex and that the fiber fineness of the lower layer of the sublayer was changed to 7.8 dtex. Thus obtained, the test material was tested to determine the amount of liquid remaining in the surface material and the area of distribution of the liquid in the surface material. The thickness of the sublayer of the test material 5-5 was approximately the same as the thickness of the test material 5-4.

{Test methods for determining the amount of liquid remaining in a surface material and the area of liquid distribution in a surface material}

The top sheet, the mass of which was determined earlier, was used as the test material. The test material was placed on a horizontal stand with the top sheet facing up, and then 80 g of artificial urine was poured at a time essentially into the center of the absorbent element at a speed of 5 g / s. After pouring, the test material was left in this state for 10 minutes, and then a transparent film was placed on the top sheet. The periphery of the wet part of the top sheet was reproduced on a transparent film by means of a pen with oil-based ink, and the area of the figure circled in such a way as to thereby obtain the area of liquid distribution in the surface material was measured. Then only the top sheet was removed from the test material to measure its mass, and the difference between this mass and the mass of the top sheet was calculated before applying it to the test material, as a result of which the amount of liquid remaining in the surface material was obtained. The smaller the amount of liquid remaining on the surface, and the smaller the area of liquid distribution in the surface material, the higher the degree to which the requirements due to practical use can be satisfied.

The evaluation results are shown together in table 3. As can be seen from the table, compared with the case of using the test material 5-3, when using the test material 5-1, both the amount of liquid remaining in the surface material and the area of the liquid in the surface material were stored on lower level. In addition, it can be seen that, compared with the use of test materials 5-4 and 5-5, in the test material 5-2, the amount of liquid remaining in the surface material was kept at a noticeably lower level. As can be seen, by adjusting thus the thickness of the fibers forming the upper laminate sheet (first layer, second layer) and the lower laminate sheet and the sublayer of the surface sheet, it is possible to maintain the amount of liquid remaining in the surface material and the liquid distribution area in the surface material on even lower level.

Table 3 Test material 5-1 5-2 5-3 5-4 5-5 Top layered sheet First layer 2.2 2.2 2.2 2.2 2.2 Second layer 4.4 4.4 2.2 2.2 4.4 Bottom layered sheet 2.2 2.2 2.2 2.2 2.2 Sublayer First layer 7.8 7.8 3.3 Second layer 3.3 3.3 7.8 The amount of fluid remaining in the surface layer (g) 0,03 0.06 0.05 0.11 0.13 The area of liquid distribution in the surface material (cm ² ) 77 68 103 66 81

As can be seen from the above results, the profiled sheet of the present invention creates a satisfactory touch sensation and a spring feeling when applied to an absorbent article and, in addition, can provide quick absorption of fluid from the surface side in contact with the skin to the surface side not in contact with skin. In addition, the profiled sheet of the present invention provides the ability to quickly move the liquid to the side of the absorbing element and does not create the possibility of a situation in which the liquid will remain on the surface of the sheet, and creates the ability to maintain the amount of liquid remaining in the surface material and the area of distribution the liquid in the surface material is at a fairly low level, so it has very good characteristics in terms of keeping the feeling dry STI and the touch of purity.

[Industrial Applicability]

The profiled sheet of the present invention can be used as a sheet of an absorbent product, a hook grip sheet located where grip with a mechanical hook is required, a cleaning sheet, a skin wiping sheet, a wound protection sheet, a cooking sheet, an oil absorption sheet for cooking, or the like, or as a sheet material forming these sheets. First of all, the profiled sheet of the present invention can be advantageously used, for example, as a top sheet for an absorbent article such as a disposable diaper, sanitary napkin and panty liner.

The invention has been described in relation to the presented embodiments, it is contemplated that the invention should not be limited to the details of the description unless otherwise indicated, but, on the contrary, it should be interpreted broadly within the spirit and scope defined in the accompanying claims.

Claims (17)

1. A profiled sheet formed from fibers, containing:
many protrusions, connecting sections and recesses on the surface side of the profiled sheet, and
connecting sections are boundaries and connect the protrusions to each other,
while the recesses are located between the protrusions with the exception of the connecting sections of six recesses around each protrusion. 2. The profiled sheet according to claim 1, in which the recess has a higher fiber density than the connecting section, and the connecting section has a higher fiber density than the protrusion. 3. The profiled sheet according to claim 1 or 2, in which each of the protrusions is connected to all adjacent protrusions using connecting sections. 4. The profiled sheet according to claim 1, in which the connecting sections are connecting sections of two types: the first connecting section and the second connecting section, while the second connecting section has a lower height compared with the height of the first connecting section. 5. The profiled sheet according to claim 1, in which each of the protrusions has an inner space. 6. The profiled sheet according to claim 1, in which the protrusions are staggered, with six recesses surrounding the protrusion, are arranged so as to form a hexagon by connecting their centers, and the staggered order is the location in which the protrusions are arranged in many rows, and the protrusions in each row protrude in a direction orthogonal to the row, and the projected images of the protrusions of the row are located between the projected images of the protrusions of the adjacent row. 7. The profiled sheet according to claim 1, in which the protrusions are staggered and each of the protrusions has an inner space, and the protrusions are connected to each other by connecting sections to form rows of protrusions, the connecting section having a width smaller than the width of the protrusion in the direction orthogonal to the direction of connection of the row, and the rows of protrusions are parallel, so that the sections in the form of grooves located between the rows are in the form of a broken line, and in the sections in the form of grooves there are angles Blenheim, located on both sides of the connecting portions. 8. The profiled sheet according to claim 1, in which a tunnel-shaped space is formed inside the connecting portion, and the protrusion has an inner space, and the tunnel-shaped space connects the inner spaces of the protrusions with each other. 9. The profiled sheet according to claim 1, in which the protrusion and six recesses surrounding it comprise an element of a pattern, and a plurality of pattern elements are repeatedly formed on the profiled sheet, while at least two recesses of each pattern element are common. 10. The profiled sheet according to claim 1, which is formed by many repeating elements of the figure, each of which consists of six-point recesses surrounding the protrusion and arranged in the following order by row number and column number:
points (1,2), (1,4), (3,1), (3,5), (5,2) and (5,4) form the first element,
points (1,8), (1,10), (3,7), (3,11), (5,8) and (5,10) form an adjacent second element on the right side,
two points (5.2), (5.4) of the first element and points (7.1), (7.5), (9.2), (9.4) form the third element under the first element,
points (3,5), (3,7), (5,4), (7,5), (5,8) of any of the first, second or third elements and the point (7,7) form the fourth element with the right side of the third element. 11. The profiled sheet according to claim 10, in which in the drawing element formed by six recesses surrounding the protrusion, the connecting sections are located as follows,
in which the center point β of the first element forms a protrusion, and the first connecting sections are located in positions γ between the recesses in front of and behind the protrusion, and the second connecting sections are located in positions ε between the other protrusions,
at which the protrusion is also located at the point β in the center of the third element, the protrusion is connected to the protrusion of the first element through the first connecting sections formed at positions γ between the recesses, as a result of which the column passing in column 3 (coordinate) formed by the positions β and γ forms a series of tabs on the sheet, and
in which the rows of protrusions are repeated in column 6 (coordinate), column 9 (coordinate), and the protrusions are distributed in a plane direction in a checkerboard pattern. 12. The profiled sheet according to claim 11, in which
the connecting portion is formed by a first connecting portion and a second connecting portion smaller in height than the first connecting portion,
the protrusions and the first connecting sections are connected and are in section along the section line passing in the direction of manufacture and passing along the tops of the protrusions,
the protrusions and the first connecting sections are located with recesses between the protrusions, and the first connecting section is in cross section along a section line extending in a direction orthogonal to the manufacturing direction and passing along the tops of the protrusions, and
the protrusions and the second connecting portions are connected and arranged in section along a section line extending diagonally to the direction of manufacture and passing the protrusions and the second connecting portions. 13. The profiled sheet according to claim 1, which contains an upper layered sheet having protrusions; a flat lower laminate sheet located on the side of the surface opposite to the protruding protrusions, wherein the lower laminate sheet is bonded to the upper laminate sheet by means of at least a portion of the recesses of the upper laminate sheet. 14. The profiled sheet according to item 13, in which the upper laminated sheet contains a first layer and a second layer, while the second layer is formed of fibers and is located on the side of the lower laminated sheet, and the first layer is formed of fibers and located on the outside of the second layer, and the fibers forming the first layer have a smaller fiber thickness compared to the thickness of the fibers forming the second layer. 15. The profiled sheet for an absorbent product according to 14, in which the fibers forming the second layer in the upper laminate sheet have a larger fiber thickness compared to the thickness of the fibers forming the lower laminate sheet. 16. The profiled sheet according to clause 15, in which the ratio of fineness E _{1d of} fibers forming the first layer in the upper laminate sheet to fineness of E _2d fibers forming the second layer, E _1d / E _2d , is in the range from 10 to 70%, and the ratio of the fineness of E _2d fibers forming the second layer in the upper laminate sheet to the fineness of E _3d fibers forming the lower laminate sheet, E _2d / E _3d , is in the range of 150 to 800%. 17. An absorbent product containing a profiled sheet according to any one of claims 1 to 16, located at least next to the selection zone, while the side of its surface having protrusions is directed to the side of the skin surface.

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