DE4004729C2 - Disposable sanitary napkin - Google Patents

Description

The invention relates to disposable sanitary napkins or inserts according to the preamble of claim 1, which have a higher guarantee of tightness and in particular one more effective contact with the outer surfaces of a user's perineal area have, which reduces the risk of leakage on the sides of the product.

For the purposes of the invention, hygienic bandages are, in particular, absorbent agents which should be used outside the female body, generally during the Menstrual period to absorb the monthly flow and other vaginal fluids and hold back.

Disposable sanitary napkins are designed so that after the Liquids from the female body without being used again, to be thrown away.

Sanitary napkins are articles of general consumption in modern society and can be divided into three categories, for example:
Tampons,
Sanitary napkins; and
Hybrid bandages that have the characteristics of the other two types.

Tampons are deposits that can hold the monthly flow inside the vagina, without the user's clothes being soiled. They are considered the best Protection means viewed. In practice, malfunctions in their application occur regarding their property, radially so when ingesting liquid expand that the expansion of the tampon seals the vaginal canal and is closed. There are also women who are physical or psychological  Do not use tampons for effective feminine protection reasons can. Finally, tampons can cause insertion and removal problems; occasionally they are sticky and difficult to handle, and for health reasons For some reasons, their use is subject to medical restrictions.

The so-called hybrid bandages assign properties to tampons and externally using sanitary napkins. Occasionally they become insoles, labial pillows or Called atrial deposits, with a partial or full introduction to the Vaginal vestibule.

In many cases described in the literature, the anatomical interaction the insert with the body of the user is not taken into account insofar as the sensitive skin tissue often due to the obstructive geometry of certain Structural elements are expanded, d. that is, the so-called labial pillows rub very hard sensitive urogenital areas, such as the vaginal opening, the urethral opening and / or the clitoris. In other cases it is necessary that a bandage with a Area that lies within the vaginal atrium, firmly attached to the intimate clothing of the Is attached, and in most cases this leads to friction within this sensitive area.

According to US Pat. No. 3,905,372, an element within the vaginal opening becomes physical tied to an outer part so that the relative movements between the body the user and the underlying structure of the insert discomfort, irritation and even cause pain. Similarly, US-A 3,983,873 Described side parts or rags that lie against the walls of the labial space, to increase the retention force of the bandage. There are other atrial deposits like that are designed to address the irritant factors through the relative movements of the body and remove the user's product and clothing; however this product is extraordinarily demanding and expensive to manufacture:

Bandages for use outside the body near the  Vulva area to record the monthly flow, other vaginal fluids and possibly urine developed in incontinent women.

In their simplest and most common form, these inserts or sanitary napkins have one absorbent core between a liquid permeable layer or film on the Front (sometimes referred to as the "upper class") and one liquid-impermeable backing layer.

The absorbent core, sometimes referred to herein as the "absorbent member", is designed to absorb the monthly flow and other vaginal fluids and absorbed. The absorbent core can be shredded pulp fibers, Polymer foams, plant pulp, natural or synthetic fibers or a contain other material that contains the monthly rivers or other body fluids can absorb. In general, pulp fibers are the main component of the absorbent core used externally to use bandages.

The liquid-permeable top layer lies against the body of the user when the Bandage is used, and passes the monthly flow or other vaginal fluids, so that they can be absorbed by the underlying absorbent core. This top layer is generally a liquid permeable, non-woven fabric or a perforated plastic film. Although the top layer can be hydrophilic, it is preferably hydrophobic. In this case the monthly flow or other liquids go through the liquid-permeable upper layer, but the upper layer feels there it is hydrophobic, dry to the touch, which makes the product more pleasant to use. The perforated plastic films are generally hydrophobic per se. Not woven If they are not made of hydrophobic fibers, substances can be treated with for example a water-repellent finish, such as fluorine-containing chemicals or wax emulsions can be made hydrophobic.

The liquid-impermeable backing layer prevents that of the absorbent core accumulated liquid flows out of the sanitary napkin and the clothes of the User dirty. The backing layer is generally a thin plastic film,  like polyethylene, although in some cases it can be made of a different material, for example a non-woven fabric that has been treated to: is impermeable to liquids. If necessary, the back for water vapor be permeable, d. H. it can let water vapor through and at the same time for liquids be impermeable.

Expiration, and most common is the expiration of monthly blood to the Pages, is very uncomfortable for the user even in very small quantities embarrassing. Therefore, when developing such products, it was the goal of the Those skilled in the art to maximize liquid flow in the Z direction (where it is taken into account that in a three-dimensional representation the axes X and Y are the represent horizontal plane and the axis Z is directed perpendicular to this plane). In addition to the technical reasons that justify this goal, there are psychological ones Reasons for the goal that a rapid drain in the Z direction discolouration on the Bandage minimized and, together with a relatively dry top layer, the Increased feeling of security and the failure of the bandage, for example due to Leakage, caused embarrassment is reduced.

The conventional bandage is a very ordinary, elongated, rectangular product that regardless of the anatomy of the user. That is, at the Application can deform this product, increasing its absorption capacity considerably reduced and the occurrence of leaks are promoted.

Starting from this product, many improvements have been made that directly or indirectly lead to a higher tightness:

• - the absorbent layers are more anatomical than a rectangle, for example in Shape of an hourglass, manufactured;
• - The bandage as a whole was given a shell shape for a better fit  between the legs closer to the user on her To reach the perineal area;
• - Upper layers were used to control the flow of the liquid optimize the absorbent element and return it to the opposite Prevent direction;
• - More complicated structures have been developed, for example an absorbent one Element that is thicker in its central area around the drainage point and the bandage to bring each other closer, side lobes that form drainage barriers or overlapping structures, such as described in US-A 4,425,130;
• - The absorbency has been increased, for example by using either of absorbent fibers or superabsorbent polymers, by changing the density within and along the conventional absorbent layer or by using layers of different materials, etc.

From this list of improvements it can be seen that the optimization of the product this is becoming more and more complicated, demanding and expensive in relation to what has been achieved Benefits, which in turn increases the price for the end user.

When examining the reasons for leakage in sanitary napkins it was found that the path of the vaginal drainage to the point where it connects with the Product that absorbs and retains such liquids, meets, if possible must be kept short. This is also shown by the fact that every distance is the Liquid allows more or less through the skin adjacent to the drainage point flow, which in turn depends, for example, on the viscosity and surface tension depends on such a liquid. In some cases, the liquid can even be outside drain the range of the absorbent layer, causing discomfort, embarrassment and the feeling of insecurity for the user. This leads to the conclusion that a structure with excellent performance, what absorption and Fluid retention concerns can only be achieved from the moment that  the liquid comes into contact with such a structure and not before.

A generic, disposable sanitary napkin is, for example, from EP 0 238 053 A2 known. It is between an absorbent element and not absorbing, elastic side edges with an interrupted weld line the possibility of forming fluid channels in contact with the absorbent material arranged so that in use, in the crotch area User, no excessive amount of fluid due to the existence of a continuous, absorption-preventing weld line accumulates. For Adaptation of the known sanitary napkin to the anatomy of a user is also possible the stacking of layers of different dimensions proposed.

DE 37 18 076 A1 describes a sanitary napkin in order to avoid it a lateral leak in addition to an absorbent element absorbing reinforcing member is provided, which at least in some areas absorbent element and elastic side edges overlap and two Weld lines included in the area of the elastic side edges. The Weld lines are along the contour of the absorbent element interrupted, so that a liquid flow into the absorbent member is possible.

To avoid a lateral leak, EP 0 155 515 A1 describes a Sanitary napkin proposed, with liquid in the area of the longitudinal Center line of the sanitary napkin while avoiding direct contact of the sanitary napkin with the perineal area of a user.

The sanitary napkin according to EP 0 091 412 A2 is constructed in such a way that liquid accumulates along an absorbent element, delimited by elastic side edges, and then gradually flow into the absorbent element.

US 4,701,177 discloses a sanitary napkin in which the absorbent element  is completely delimited by a welding line.

It is an object of the present invention, the generic, disposable Develop sanitary napkin in such a way that it has the disadvantages of the prior art overcomes and in particular the risk of fluid accumulation and thus Leakage on the sides is effectively reduced and automatically adjusts to the Anatomy of a user adapts without new materials and complicated as well demanding structures that are difficult to manufacture, easy to use is effective and has a favorable cost-benefit ratio.

The invention solves this problem with a disposable sanitary napkin is characterized by at least one at least in the absorbent element line obtained by compression along and near each longitudinal edge of the absorbent element. These lines are sufficiently far apart that the pressure exerted on the product by the user's thighs Forms protuberance towards the body of the user, into which the liquids drain can.

Subclaims 2 to 12 describe preferred embodiments of the invention.

The function of the napkin according to the invention is based on the fact that when in use the middle of the product is compressed by the thighs of the user. Through this compression, the material between the two lines becomes the body of the User pressed down, creating more material for absorption at the drainage point is available, d. that is, where the absorption requirement is greatest. To this Wise is a free flow of fluid with the ability to pass through the skin escape, prevents and thus reduces the risk of leakage.

If, as in the prior art, the two lines are not present, this can happen absorbent material under the user's thigh pressure away from the body move or adopt a random configuration that doesn't have better contact at the  Drainage point.

That is, unlike conventional sanitary napkins, the disposable sanitary napkin according to the invention allows a protuberance of the absorbent material to the To optimize contact with the body of the user without additional absorbent material must be used for this purpose.

The term "compaction line" or "compression obtained" as used herein Line "means that the body of the sanitary napkin is subjected to such pressure along a line Line is subjected to a higher density than that in an inelastic manner surrounding material is obtained. Such lines - there must be at least two of them be present - can be straight or not straight as well as to each other and to Longitudinal edges are parallel, they can also have any depth. Preferably the lines run parallel to the longitudinal edges, their width is less than 5 mm, because in this way they favor the formation of the protuberance when the product is in Use is taken.

A line obtained by high compression is opposite a line that achieved by low compression, preferred because it has the ability of absorbent layer to form the protuberance towards the body of the user favored under the pressure of the thighs. A condensation over a certain However, value has the disadvantage that a line of hard material is created, which in turn can be uncomfortable for the user. A single line of compression along each Longitudinal edge is preferred. However, two or more adjacent lines are also suitable along each longitudinal edge or other configurations that are not disadvantageous affect the formation of the protuberance while using the product.

The term "longitudinal edge" refers to the edges along the absorbent Materials of the bandage according to the invention. This expression does not refer to the Longitudinal edges along the product, which can also have side flaps that over the protruding element.  

The term "along or near each longitudinal edge" means the distance from a line obtained by compression to the nearest longitudinal edge is the distance between this one line and the other by compression preserved line on the opposite longitudinal edge. Because the lines of compaction because of their greater density are areas of preferred fluid conduction, they are the Longitudinal edges not so close that there is a risk of leakage, but not so close either together that the formation of the protuberance specified above is prevented. The distance between one compression line and the closest is preferably Longitudinal edge 5 to 30%, in particular 15 to 20% of the width of the absorbent Elements.

The distance between the compaction lines also depends on the material or materials from which form the absorbent material and which, for example, differ May have elasticity, density or fiber length. A specific property of Density lines are that they are preferred drainage paths for liquids, and therefore guide the leaked liquid into areas or suck it up like a wick farther from the drain point, d. that is, they distribute the liquid more homogeneously and faster across the entire absorbent element, so that the liquid takes less time is available to come into contact with the skin of the user, and one Leakage is avoided, which would occur if there was a lot of menstrual fluid flows out of a single point without compression lines for easier distribution.

In some practical embodiments, conventional sanitary napkins are used elastic means in combination with side flaps along the product and a Cotton layer of cellulose fibers used as an absorbent element. It should be noted that some compression of the absorbent element during storage of the Product occurs. These elastic means give the product anatomical curvatures and folds, and the elasticity of the pulp fibers allows this to prefer itself to embed near the anatomical curvatures and folds so that they are undesirable Areas of higher density and consequently lower absorption speed, usually give in at the site of menstrual drainage. The lines of compaction  give the cellulose wadding cohesion and therefore resistance to elastic movements of their fibers at locations favorable for the product, e.g. B. along the longitudinal edges, where they move the leaked liquid to more distant areas of the absorbent element and the above-mentioned protuberance when using the Can bring bandage.

Under the "body" of the bandage is to be understood here that this at least that comprises absorbent element and optionally also consist of other layers can, e.g. B. the top layer and the back layer, which are on, under or in the body are arranged. The compaction lines can therefore only be in the absorbent element or in any other structural element that the body of the bandage contains, to be pressed. For example, the compression lines in both the top layer as well as in the absorbent element.

The preferred method of making the compaction lines is based on the absorption body a relief pattern made of a corresponding material and the desired shape is applied and pressed so that the material of the absorbent Elements are sufficiently embossed, if necessary by hot pressing, around compression lines to evoke. The surface of the absorbent element is the side facing the body of the user; in the otherwise the pressure exerted by the user's thighs leads to unfavorable formation of the protuberance on that side of the absorbent element, that is turned away from the body.

There is an example of a large-scale production of the bandage according to the invention in it, on the circumference of a rotating cylinder, a number of identical relief patterns to be attached and the cotton wool forming the absorbent element between them Cylinder and a conveyor belt under sufficient pressure to perform the Create compaction lines on the cotton.

The disposable sanitary napkin according to the invention is not limited to a special type of structure and can have the following features:

• - Liquid-permeable cover layers made of a non-woven fabric or perforated plastic films, with or without embossing, alone or in combination with other materials, with either hydrophobic or hydrophilic or other properties,
• - a single-layer or multi-layer layer of wood or other Plant pulp, polymer or natural foam, hydrophobic fibers, either alone or mixed together with the superabsorbent polymers Have areas of different density,
• - if necessary, means for attaching the bandage to the user's clothing,
• - An outer backing made of either completely or partially hydrophobic material or materials, breathable or not, as a single or multiple layer,
• - if necessary, elastic means,
• - in a rectangular shape, in the form of an hourglass or any other corresponding Shape.

The compaction lines must be close to the longitudinal edges of the area that the Monthly flow should take up, and should be a length of preferably 1 to 12 cm and in particular have 2 to 8 cm.

In a preferred embodiment of the invention, the Densification lines not only extend along the longitudinal edges, but also extend complementary to the areas that do not directly record the monthly flow, but rather have a direction leading to each other until they meet and in in both directions. This will make it faster and more homogeneous Distribution of the liquid collected in the absorbent element optimized.

However, the invention also relates to embodiments in which the Density lines do not meet or are divided radially, or also Embodiments that distribute the collected liquid without the ability to  Protuberance between the compression lines under the thigh pressure of the To educate users to adversely affect them.

The invention is based on the schematic drawing of a Embodiment of a disposable sanitary napkin explained in more detail. Show it:

FIG. 1a is a plan view of the product prior to the thermal contraction of the elastic devices used,

FIG. 1b shows a schematic cross section along the line II of Fig. 1a,

Fig. 2a shows a perspective view of the napkin in Fig. 1 according to the thermal contraction of the elastic devices used,

FIG. 2b shows a schematic cross section along the line II-II in Fig. 2a,

Fig. 3 is a schematic cross section of the shape that the bandage of Fig. 1 takes when it is used, and

Fig. 4 is a schematic representation of other arrangements of the compression lines that can be used in other embodiments of the invention.

In the drawing, an externally applicable sanitary napkin 30 of elongated shape with rounded upper and lower ends 16 and 17 is shown. It consists of a liquid-permeable top layer 1 , an absorbent element or core 3 and a liquid-impermeable back layer 2 . The napkin 30 also includes a pair of elastic members 6 , 6 'located on the longitudinally extending side edges 18 and 19 of the napkin, respectively. The bandage 30 has compression lines (compression lines) 10 , 11 , 12 a, 12 b, 12 c, 12 d, 13 a and 13 b, which are explained in more detail below. From Fig. 1b z. B. can be seen that the top layer 1 and the back layer 2 extend over the same width. Layers 1 and 2 are also the same length. In contrast, the length of the absorbent element 3 is less than the length of the top and back layers and its width is less than the width of the top and back layers. The absorbent element 3 has a pair of longitudinally extending side edges 9 , 9 ', a rounded upper edge 21 and a rounded lower edge 22 , which together form the periphery of the absorbent element. The absorbent element is located between the top layer 1 and the back layer 2 , as can best be seen from FIG. 1b. The top layer 1 and the back layer 2 are z. B. attached by heat sealing, ie on those parts which lie between the circumference of the absorbent element 3 and the circumference of the bandage 30 , which is defined by the mentioned upper edge 16 , the lower edge 17 and the two longitudinal side edges 18 and 19 . As a result of the layers 1 and 2 fastened to one another in the specified manner, longitudinally extending side tabs 4 , 5 arise in the bandage 30 .

Between the top layer 1 and the back layer 2 there are elastic elements 6 , 6 ′ in the side tabs 4 , 5 of the bandage 30 . These elastic elements are in a stretched but elastically contractible state when the bandage 30 is spread out flat, as in FIG. 1a. When the elastic elements contract out of their stretched state, the bandage assumes a "boat-like" shape according to FIG. 2a. The elastic elements can be one or more rubber monofilaments which are attached, for example by means of a hot-melt adhesive, between the top layer and the back layer according to FIG. 1b. However, a strip of thermoplastic film which contracts and which becomes elastic after heat treatment is preferably used as the elastic member. Various heat-shrinkable thermoplastic films which have elastic properties after heat shrinking are known. Strips of a heat-shrinkable ethylene and vinyl acetate copolymer having a basis weight of about 35 g / cm ² , a length of about 13 cm, a width of about 1 cm and a thickness of about 30 μm are preferably used in accordance with the invention.

The elastic members preferably have a length that is about 60% of the napkin 30 and are centered from one end to the other of the napkin. The indicated strips of heat-shrinkable copolymer are attached in their relaxed state between the top and back layers using an arrangement for heat sealing, thereby creating a series of spaced, transversely oriented attachment lines 7 ( Fig. 1a). The fastening lines 7 are separated from one another by areas 8 in which there is no seal. If the heat-shrinkable elastic elements 6 are attached between the top layer and the back layer by the above-mentioned heat sealing, the elements 6 , 6 'contract under the action of the applied heat and thereby obtain their elastic properties. If the heat-shrinkable elastic elements 6 , 6 'are fastened, for example, with an adhesive, the elements must then be treated with heat, e.g. B. hot air, so that they contract and maintain their elastic properties. If the elastic elements 6 , 6 'are in the contracted state, the bandage 30 assumes the anatomical, shell-shaped configuration according to FIGS. 2a and 2b. The side tabs 4 , 5 and their adjacent areas of the napkin are lifted upward, as shown in FIG. 2b, so that the tabs form an angle of approximately 30 ° with the horizontal plane 36 of the napkin 30 in the expanded state according to FIG. 1b.

The liquid-permeable top layer 1 preferably consists of a non-woven fabric made of heat-sealable polyester fibers with a basis weight of 22 g / m with 144 perforations per 6.45 cm ² . The liquid-impermeable layer 2 preferably consists of a polyethylene film with a basis weight of 19 g / cm ² and a thickness of about 0.020 mm. If the top layer 1 consists of heat-sealable polyester fibers and the back layer 2 consists of polyethylene, the top layer and the back layer can be sealed at their edge parts by heat. In a preferred embodiment, the absorbent element 3 consists of a layer of 100% fleece wool with a weight of about 7 g. In a typical sanitary napkin, the absorbent element 3 is about 20 cm long and about 6 cm wide. The absorbent element 3 is located in a known manner between the liquid-permeable top layer 1 and the liquid-impermeable back layer 2 .

In one embodiment of the invention, the sanitary napkin 30 has a first pair of compression lines 10 , 11 which run parallel to the longitudinally extending side edges 9 , 9 'of the absorbent element 3 . For a sanitary napkin 30 with a length of 22 cm, compaction lines 10 , 11 are approximately 6 cm long (between points A and B and A 'and B' in FIG. 1a) and somewhat inward at a distance (approximately 0.8 cm) from the longitudinal side edges 9 , 9 'of the absorbent element 3 . The compression lines 10 , 11 are arranged substantially in the middle between the upper and lower edges of the napkin.

In a second and more preferred embodiment of the invention, the sanitary napkin 30 has four further compression lines. As shown in FIG. 1 a, a pair of compaction lines extends at an angle from the ends of each compaction line 10 , 11 to points (C and C 'in FIG. 1 a) that lie on the longitudinal center line 33 of the sanitary napkin 30 . Thus, at the upper end of the bandage 30, a third compaction line 12a runs from the upper end A 'of the first compaction line 10 to a first point C on the center line 33 between the end A and the upper edge 16 of the bandage.

Correspondingly, a fourth compression line 12 b extends from the upper end A of the second compression line 11 to the first point C. A second pair of compression lines 12 c and 12 d arranged at an angle is located in the vicinity of the lower part of the sanitary napkin. A fifth compression line 12 extends from the lower end c B 'of the first compression line 10 to a second point C' on the center line 33 between the end B 'and the lower edge 17 of the napkin 30th A sixth compression line 12 d runs from the lower end B of the second compression line 11 to the second point C 'on the center line 33 .

If the compression lines 10 , 11 , 12 a, 12 b, 12 c and 12 d are arranged in the manner just described, they form an elongated hexagonal configuration, as shown in FIG. 1a.

It can also be seen from FIG. 1 a that the first compression line 10 and the second compression line 11 run parallel to one another and to the side edges 9 , 9 ′ of the absorbent element 3 . In a typical sanitary napkin 30 with a length of approximately 22 cm and a width of approximately 8 cm, which has an absorbent element 3 with a length of approximately 20 cm and a width of approximately 6 cm, the compression lines 10 and 11 have a length of about 6 cm and a width of about 0.15 cm. The compression lines 10 and 11 are expediently at a distance of approximately 4 cm.

In another embodiment of the invention, the sanitary napkin has a further pair of compaction lines along the longitudinal center line 33 . From Fig. 1a it is seen that a seventh compression line 13 a extends from point C to point D on the longitudinal centerline 33 in the direction of the upper end of the sanitary napkin. Correspondingly, an eighth compression line 13 b runs from point C 'to point D' on the longitudinal center line 33 in the direction of the lower end of the sanitary napkin. If the bandage 30 and the compression lines 10 , 11 , 12 a, 12 b, 12 c and 12 d have the typical lengths given, the compression lines 13 a and 13 b are expediently 1.5 cm long. It will be apparent to those skilled in the art that the various dimensions given here for the bandage 30 , the absorbent element 3 and the various compression lines are only examples and that these dimensions can be changed.

A steel plate can be used to form the compaction lines Ribs that match the desired line pattern correspond to be used. For example, that absorbent element placed on a fixed surface and then be covered with the steel plate so that their Ribs in with the top of the absorbent element Come into contact. The steel plate is then against that absorbent element pressed using a hydraulic press (Norgren) with a pressure of 630 mbar to form the Compaction lines are used.

FIG. 3 shows the bandage of FIG. 2 in use, inserted into the perineal area 40 of the user. Under the pressure of the user's thighs 12 and 13 , the protuberance 14 forms between the compression lines 10 and 11 . The side tabs 4 and 5 rest against the thighs of the user and thus effectively prevent lateral leakage.

Fig. 4 shows three examples of the present invention arranged compression lines. The compression lines do not meet in FIG. 4a; in FIG. 4b the compaction lines meet and diverge radially to the outermost regions of the bandage; two compression lines 4c in Fig. arranged along each longitudinal edge.

The sanitary napkin according to the invention shown in FIG. 2 was investigated in a group of 17 women.

Each woman received 7 sanitary napkins according to the invention, i. H. With Compaction lines (hereinafter with group A bandages designated) and 7 other, corresponding to these bandages Tie, but without the compaction lines (in the following with Group B bandages).

Every woman wore the bandages during menstruation, taking them  used the A and B bandages alternately. Every bandage was used for an average of four hours.

After use, each bandage was examined for the formation of the protuberance in the middle and the occurrence of leakage on the sides. The following results were obtained:

• - 40% more bandages from group A than group B showed the Formation of the protuberance in the middle, causing is proven that the use of compaction lines leads to the formation of this protuberance.
• - 5% less bandages from group A than group B. Signs of leakage on the sides, as can be seen is that the protuberance according to the invention is nearby the leak point helps prevent leakage.

Claims (12)

1. Disposable sanitary napkin, with

• - an absorbent element ( 3 ),
• - a liquid-permeable layer ( 1 ) on the upper side facing the body,
• - A liquid-impermeable layer ( 2 ) on the back facing away from the body and
• - along longitudinal edges ( 9 , 9 ') of the absorbent element ( 3 ) and side edges ( 4 , 5 ) extending away therefrom, which comprise elastic elements ( 6 , 6 '),

characterized by at least one line ( 10 , 11 , 12 a, 12 b, 12 c, 12 d, 13 a, 13 b) obtained by compression at least in the absorbent element ( 3 ) along and in the vicinity of each longitudinal edge ( 9 , 9 ') of the absorbent element ( 3 ). 2. Sanitary napkin according to claim 1, characterized in that the compression line is 1 to 12 cm long. 3. Sanitary napkin according to claim 2, characterized in that the line of compaction is 2 to 8 cm long. 4. Sanitary napkin according to one of claims 1 to 3, characterized characterized in that the compression line 1.5 to 5 mm is wide. 5. Sanitary napkin according to one of claims 1 to 4, characterized in that the compression line runs parallel to the longitudinal edges ( 9 , 9 ') of the absorbent element ( 3 ). 6. Sanitary napkin according to one of claims 1 to 5, characterized characterized that several lines of compaction to each other who are parallel.   7. Sanitary napkin according to one of claims 1 to 6, characterized in that the compression line (s) in the absorbent element ( 3 ) is (are) pressed. 8. Sanitary napkin according to one of claims 1 to 6, characterized in that the compression line (s) in the absorbent element ( 3 ) and the permeable upper layer is (are) pressed. 9. sanitary napkin according to one of claims 1 to 8, characterized characterized in that the compression line (s) into the the structure forming the bandage is (are) pressed in. 10. Sanitary napkin according to one of claims 1 to 9, characterized characterized in that the compression lines (A B, A ' B ') each other in the men areas not directly absorbing flow extend until they meet (C, C ') and each other then a little further in both directions (D, D ') extend. 11. Sanitary napkin according to one of claims 1 to 10, characterized in that the distance between the compression line and the closest longitudinal edge ( 9 , 9 ') is 5 to 30% of the width of the absorbent element ( 3 ). 12. Sanitary napkin according to one of claims 1 to 11, characterized in that the distance between the compression line and the nearest longitudinal edge is 5 to 20% of the width of the absorbent element ( 3 ).