FR3108494A1 - Absorbent for washable diaper and associated diaper - Google Patents

Abstract

Absorbent for washable diaper and associated diaper. The invention relates to an absorbent (1) for a washable diaper (3), comprising an assembly (10) comprising a plurality of layers of fabric, in which, in a configuration for wearing the absorbent, an upper layer has an internal face intended to be in contact with the skin, and a lower layer has an outer face facing outward. The assembly (10) comprises a stack comprising at least three intermediate layers. For at least one set of intermediate layers, each intermediate layer is assembled with a first consecutive layer by a first portion of its contour, and with a second consecutive layer by a second portion of its contour, the first portion and the second portion having a overlap of less than 30% of the contour perimeter. The stack thus confers an improved absorption capacity on the absorbent (1), and facilitates its aeration and washing. The absorbent (1) does not require complex manipulations, facilitating its use. Figure for abstract: Fig. 1

Description

Absorbent for washable diaper and associated diaper

The present invention relates to the field of absorbents for washable diapers, which are usually called washable diaper in French and diaper in English. It finds a particularly advantageous application in the field of childcare.

STATE OF THE ART

A washable diaper generally consists of two elements. A first element is an absorbent, which can be commonly referred to as a diaper or an insert. The absorbent retains bodily fluids, especially urine and stool. The second element is a waterproof part, generally called protective panties, associated with the absorbent and allowing to keep the child dry.

There are three main types of absorbent on the market. In the most common type of washable diaper, the absorbent typically consists of two layers of absorbent fabric sewn together. The absorbent is configured to be attached to a child's stomach, similar to a disposable diaper. After attaching the absorbent, the protective pants are attached so as to cover the absorbent. However, this model remains bulky and can interfere with the child's movements. In addition, its absorption capacity may be limited and require the addition of additional absorbent inserts.

Alternatively, in the washable diaper called "all-in-one", abbreviated TE1, the protective pants are sewn to the absorbent. So there is no need to add an extra waterproof panty. The TE1 diaper attaches to a child's stomach without any further manipulation, like a disposable diaper. The protective pants are generally made of waterproof fabric, which is more fragile than the absorbent fabric. After several washes at high temperature, the protective pants may be damaged, which reduces the life of the TE1 diaper. The absorbent and the protective pants being sewn together, the risk of leaks is also greater, and in particular by capillarity. As with the previous type, its absorption capacity may be limited and require the addition of additional absorbent inserts.

In the second type of washable diaper, the absorbent is a napkin to be folded. The swaddle consists of a thin, absorbent fabric, with one or two layers, folded several times on itself and inserted into waterproof protective pants. However, this solution requires a lot of handling time each time the diaper is put on, as well as the know-how to be acquired in order to fold it correctly and avoid leaks. Nappies may also require the use of additional inserts for more absorbency.

The third type of washable diaper includes an absorbent insert. The insert generally comprises six layers of absorbent fabric sewn together around their outline, typically in a rectangle. In general, the thorough washing and drying of these inserts is difficult. However, an absorbent is a product intended for daily use and intensive washing.

There are different possible attachment systems for the inserts in the waterproof protective pants. The insert can simply be placed in waterproof pants. The insert can then move in the panties relative to its initial position, or even twist or bend on itself, thus increasing the risk of leakage. Therefore, it is the waterproof pants that are in direct contact with the child's bodily fluids. As stated above, waterproof pants have limited resistance to intensive washing and high temperature.

The insert can be slipped into a pocket of waterproof pants, in so-called "pocket diaper" models. However, the manipulation to correctly place the insert in the pocket can be tricky. In addition, the insert can still move in the panties relative to its initial position.

The insert can be removably attached to the protective pants, for example by press studs. This type of exchange is commonly called “All-In-2”, abbreviated as TE2. This solution can still be improved, however, because it does not prevent the risk of the stools overflowing into the waterproof panties.

The insert can be placed in a waterproof pod, the pod being attached to the waterproof pants. This type of exchange is commonly referred to as “All-In-3”, abbreviated as TE3. The insert is absorbent and the waterproof carrycot helps retain stool. However, like the protective pants, the carrycot is generally made from a fragile fabric that does not support intensive washing and high temperatures.

It is therefore an object of the present invention to provide an improved absorbent for washable diapers. In particular, the absorbent may aim to overcome the aforementioned drawbacks. An object of the present invention may be to allow sufficient absorption of the absorbent while facilitating its use.

The other objects, features and advantages of the present invention will become apparent from a review of the following description and the accompanying drawings. It is understood that other benefits may be incorporated.

SUMMARY

• une pluralité de couches de tissu, dans lequel, dans une configuration de port de l’absorbant :
  • une couche supérieure présente une face interne destinée à être en contact avec la peau d’un utilisateur, et
  • une couche inférieure présente une face externe tournée vers l’extérieur.

To achieve this objective, according to one embodiment, a washable diaper absorbent, comprising an assembly comprising:

• a plurality of fabric layers, wherein, in an absorbent wearing configuration:
  • an upper layer has an internal face intended to be in contact with the skin of a user, and
  • a lower layer has an outer face facing outward.

Advantageously, the assembly comprises a stack comprising at least three intermediate layers, distinct from the upper layer and from the lower layer, extending along a main direction and at least partially superimposed along a second direction substantially perpendicular to the main direction, and each having an outline.

• avec la première couche consécutive par une première portion de son contour,
• avec la deuxième couche consécutive par une deuxième portion de son contour, la première portion et la deuxième portion présentant un recouvrement inférieur à 30 % du périmètre du contour.

Preferably, for at least one set of intermediate layers, each intermediate layer is assembled with a first consecutive layer, placed facing, preferably in contact , a first face of the intermediate layer, and with a second consecutive layer, placed facing , preferably in contact with , a second face of the intermediate layer opposite the first face, the first and second consecutive layers being taken from among the upper layer, the lower layer and another intermediate layer, so that each layer intermediary of said assembly is assembled:

• with the first consecutive layer by a first portion of its contour,
• with the second consecutive layer by a second portion of its contour, the first portion and the second portion having an overlap of less than 30% of the perimeter of the contour.

According to one example, the first contour portion is less than the perimeter of the contour. The second contour portion may be less than the perimeter of the contour.

Thus, the layers of the stack have good cohesion. In addition, the stack thus avoids the appearance of a preferential path when absorbing a body fluid, and thus minimizes the risk of leakage when wearing the absorbent. Each layer in the stack may be spaced from its adjacent layer or layers in the stack, which facilitates the circulation of water or air over the surface of each layer. When wearing the absorbent, the urine can thus be better distributed in the absorbent. The air can also circulate better which allows better aeration of the absorbent during its port. In addition, the circulation of water and cleaning products is facilitated when washing the absorbent. The quantity of residues of these products is therefore limited and washing is made more effective. However, in the context of the development of the present invention, it has been observed that with the existing solutions the inserts present a risk of fouling during washing, and in particular by detergent residues soaking into the fabric. Moreover, it has been found that these residues can end up altering the absorption capacity of the absorbent, or even cause irritation on the child's skin.

The stack thus gives an improved absorption capacity to the absorbent, compared to existing solutions, while facilitating its aeration and washing. In addition, the absorbent does not require complex manipulations, such as folding, nor assembly of the layers of the absorbent by a user, thus facilitating its use. Furthermore, the absorbent according to the invention reduces the risk of irritation of the child's skin.

According to one example, said set of intermediate layers comprises only some of the intermediate layers. This set does not include all the intermediate layers.

According to one example, each intermediate layer has an outline having longitudinal edges and lateral edges. The first portion of the outline of an intermediate layer can be formed by only one of: at least one or more portions of its longitudinal edges; at least one or more portions of its side edges. The second portion of the contour of an intermediate layer can be formed by at least the other of: one or more portions at least of its longitudinal edges, and one or more portions at least of its lateral edges.

• au moins deux couches intermédiaires non consécutives sont chacune assemblées avec une couche qui leur est consécutive par uniquement l’une parmi : une ou plusieurs portions au moins de leurs bords longitudinaux, et une ou plusieurs portions au moins de leurs bords latéraux, et
• au moins une couche intermédiaire, disposée entre lesdites au moins deux couches intermédiaires non consécutives, est assemblée avec une couche qui lui est consécutive par au moins l’autre parmi : une ou plusieurs portions au moins de ses bords longitudinaux, et une ou plusieurs portions au moins de ses bords latéraux.

According to an example, each intermediate layer has an outline having longitudinal edges and lateral edges:

• at least two non-consecutive intermediate layers are each assembled with a layer which is consecutive to them by only one of: at least one or more portions of their longitudinal edges, and at least one or more portions of their lateral edges, and
• at least one intermediate layer, arranged between said at least two non-consecutive intermediate layers, is assembled with a layer which is consecutive to it by at least the other from among: one or more portions at least of its longitudinal edges, and one or more portions at least of its side edges.

According to one example, each intermediate layer is assembled with a layer which is consecutive to it, in particular an intermediate layer which is consecutive to it, by, alternately, only one of: one or more portions at least of its longitudinal edges, or a or several portions at least of its side edges.

• la première couche consécutive, uniquement le long d’au moins une ligne s’étendant selon une première direction,
• la deuxième couche consécutive, uniquement le long d’au moins une ligne s’étendant selon une deuxième direction perpendiculaire à la première direction.

Preferably, each intermediate layer, one face of which is placed in contact with a first consecutive layer and the other face of which is placed in contact with a second consecutive layer, is assembled, preferably sewn, with:

• the first consecutive layer, only along at least one line extending in a first direction,
• the second consecutive layer, only along at least one line extending in a second direction perpendicular to the first direction.

According to one example, the first direction corresponds to a length of the stack. According to one example, the second direction corresponds to a width of the stack.

• une pluralité de couches de tissu, dans lequel, dans une configuration de port de l’absorbant :
  • une couche supérieure présente une face interne destinée à être en contact avec la peau, et
  • une couche inférieure présente une face externe tournée vers l’extérieur de l’assemblage par rapport à la couche supérieure,

According to a second aspect of the invention, separable or complementary to the first aspect, there is provided an absorbent for washable diapers, comprising an assembly comprising:

• a plurality of fabric layers, wherein, in an absorbent wearing configuration:
  • an upper layer has an internal face intended to be in contact with the skin, and
  • a lower layer has an outer face facing the outside of the assembly with respect to the upper layer,

• l’assemblage comprend un empilement comprenant au moins trois couches intermédiaires, distinctes de la couche supérieure et de la couche inférieure, s’étendant selon une direction principale et au moins partiellement superposées selon une direction sensiblement perpendiculaire à la direction principale, et présentant chacune un contour;
• la couche supérieure présente une ouverture configurée pour former avec la couche inférieure, dans la configuration de port, un réservoir de recueil des fluides corporels, et
• l’assemblage est configuré pour autoriser, le déplacement des couches intermédiaires au travers de l’ouverture de la couche supérieure de sorte à faire passer l’assemblage depuis la configuration de port à une configuration de lavage.

Advantageously:

• the assembly comprises a stack comprising at least three intermediate layers, distinct from the upper layer and from the lower layer, extending along a main direction and at least partially superimposed along a direction substantially perpendicular to the main direction, and each having a outline;
• the upper layer has an opening configured to form with the lower layer, in the wearing configuration, a body fluid collection reservoir, and
• the assembly is configured to allow movement of the intermediate layers through the opening of the top layer so as to change the assembly from the wearing configuration to a washing configuration.

In the wearing configuration, the intermediate layers are constrained within the volume of the reservoir and allow efficient absorption of body fluids and in particular urine, limiting leakage. The stack can thus be extracted from the tank to obtain the washing configuration, in which the layers of the stack are no longer constrained in the volume of the tank. Washing and drying the contents of the tank and the stack are thus facilitated.

According to one example, the intermediate layers are assembled, preferably sewn together, by a portion of their contour. A spacing between each layer of the stack is facilitated in the washing configuration.

The stack thus gives an improved absorption capacity to the absorbent, compared to existing solutions, while facilitating its aeration and washing. Furthermore, switching from the port configuration to the washing configuration does not require complex manipulations by a user. Its use is therefore facilitated.

According to one example, the absorbent can further comprise an attachment element, for example a label, placed on an outer face of the upper layer. Preferably, the attachment element is accessible when the absorbent is in the washing configuration. Thus, the upper layer being able to turn over during the transition from the wearing configuration to the washing configuration, the attachment element is made accessible to suspend the absorbent and thus facilitate its drying.

According to a third aspect, there is provided a washable diaper comprising an absorbent according to the first and/or the second aspect of the invention, and protective pants. According to one example, the protective pants are made of a material that is more impermeable than the layers of fabric forming the stack. According to one example, the protective trousers are impermeable. The diaper thus has an improved absorption capacity compared to existing solutions, while facilitating its ventilation and washing. In addition, the diaper minimizes the risk of leaks and offers ease of use.

According to one example, the absorbent is configured to be attached manually and removably to the panties, for example by a buttonhole or at least one, or even a plurality of, press stud(s). Hanging the diaper directly in the waterproof panties eliminates unnecessary layers on the child's hips, and therefore improves their comfort of movement, while remaining in place to be effective in terms of absorption.

According to one example, the washable diaper further comprises an extension removably mounted on the protective pants and arranged so as to present a partial overlap with the absorbent in the main direction.

BRIEF DESCRIPTION OF FIGURES

The aims, objects, as well as the characteristics and advantages of the invention will emerge better from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which:

FIG. 1 represents an overall view of the washable diaper according to an exemplary embodiment.

Figure 2 shows a top view of the absorbent, according to an exemplary embodiment, in the wearing configuration.

Figure 3 shows a bottom view of the absorbent, shown in Figure 2, in the wearing configuration.

Figure 4 shows a bottom view of the absorbent shown in Figure 2, in the wash configuration.

Figure 5 shows a side view of the absorbent in the washing configuration shown in Figure 4, in a drying position.

Figure 6 shows a detailed view of the absorbent shown in Figure 5.

Figure 7 shows an exploded view of the layers of the absorbent assembly shown in Figure 2.

FIG. 8 represents a view of an extension of the absorbent, according to an exemplary embodiment.

FIG. 9 represents an overall view of the washable diaper comprising the extension illustrated in FIG. 8, according to an exemplary embodiment.

FIG. 10 represents a top view of the absorbent, in the washing configuration, according to an exemplary embodiment.

Figure 11 shows an exploded view of the layers of the absorbent assembly shown in Figure 10.

The drawings are given by way of examples and do not limit the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily scaled to practical applications.

DETAILED DESCRIPTION

Before starting a detailed review of embodiments of the invention, optional characteristics are set out below which may optionally be used in combination or alternatively.

• une ou plusieurs lignes d’assemblage s’étendant selon une portion au moins des bords longitudinaux de cette couche, soit par
• une ou plusieurs lignes d’assemblage s’étendant selon une ou plusieurs portions au moins des bords latéraux de cette couche.

According to one example, each intermediate layer of said set is assembled, preferably sewn, with the layer which is consecutive to it by, alternately, only one of: one or more portions at least of its longitudinal edges and one or more portions at the less than its side edges. Each intermediate layer can be assembled, preferably sewn, with the layer which is consecutive to it by, alternately, either by:

• one or more assembly lines extending along at least a portion of the longitudinal edges of this layer, either by
• one or more assembly lines extending along one or more portions at least of the side edges of this layer.

According to one example, each intermediate layer of said set is assembled, preferably sewn, with the layer which is consecutive to it by, alternately, only one from at least a portion of its longitudinal edges or at least a portion of its lateral edges. Thus two adjacent intermediate layers are not joined together both in a direction corresponding to their longitudinal edges and both in a direction corresponding to their lateral edges.

According to one example, the stack may have a portion of maximum absorption in which all the intermediate layers are superimposed. According to one example, the portion of maximum absorption can be arranged, according to the main direction and in a direction from the front to the back of the absorbent in the port configuration, after a first portion of reduced absorption in which only part of the intermediate layers are superimposed. In this part, at least part of the intermediate layers are partially superimposed. According to an alternative or combinable example, the maximum absorption portion can be arranged, in the port configuration, in a third direction perpendicular to the main direction and to the second direction, in a direction from the left to the right of the absorbent, after a first portion of reduced absorption in which only part of the layers of the stack are superimposed. Thus, the absorption capacity of the absorbent is increased while maintaining comfort of movement, for example when moving a child on all fours.

According to one example, at least one intermediate layer has a length, in the main direction, less than the length of the other intermediate layers, the intermediate layers being superposed so as to form the maximum absorption portion and the reduced absorption portion.

According to one example, the layer of the stack having a length less than the length of the other layers is a central layer of the stack in a direction perpendicular to the main extension plane of the layers, in the port configuration. According to one example, the layer of the stack having a length less than the length of the other layers is a lower layer of the stack, in the port configuration.

According to one example, at least one intermediate layer has a width, in the transverse direction, less than the width of the other intermediate layers, the intermediate layers being superposed so as to form the maximum absorption portion and the reduced absorption portion.

According to one example, the maximum absorption portion is included, in the main direction and in a direction from the front to the back of the absorbent in a wearing configuration, between the first reduced absorption portion and a second reduced absorption portion. According to an alternative or combinable example, the maximum absorption portion can be included, in the port configuration, in the third direction and in a direction from the left to the right of the absorbent, between the first reduced absorption portion and a second portion of reduced absorption. At the level of the second portion of reduced absorption, only part of the layers of the stack are superimposed. In this part, at least part of the layers of the stack are partially superimposed. The maximum absorption portion of the absorbent can include all the intermediate layers, or even all the layers of the absorbent, while the longitudinal and lateral edges of the absorbent only include part of the layers of the stack. Thus, the comfort of movement of the child is further improved. While maintaining good absorption capacity, the absorbent also has a cut closer to the body, making it easier to put on.

According to one example, the maximum absorption portion is arranged facing the opening of the upper layer. According to a more specific example, the maximum absorption portion is substantially centered with respect to the opening of the upper layer.

According to one example, the stack free of the upper layer of the absorbent can comprise at least six layers, and more preferably nine layers. By increasing the number of layers in the stack, the absorption capacity of the absorbent is increased. Synergistically with the absorption portion and the first, or even the second, reduced absorption portion, the number of layers of the stack can be increased without hindering the child's movements. For example, the maximum absorption portion can thus comprise nine superimposed layers, and the first, or even the second, reduced absorption portion comprises a lower number of layers.

According to one example, the upper layer has an opening configured to form with the lower layer, in the wearing configuration, a reservoir for collecting bodily fluids.

According to one example, the assembly is configured to allow, outside the wearing configuration, the movement of the intermediate layers through the opening of the top layer so as to change the assembly from the wearing configuration to a washing configuration .

According to one example, the absorbent is configured so that the displacement of the intermediate layers through the opening of the upper layer is carried out manually or automatically. This displacement can in particular be carried out manually before or during washing by a user, or be carried out automatically by the application of mechanical stresses, for example during machine washing. Thus this displacement can in particular be carried out automatically when the absorbent is agitated or undergoes a washing cycle in a washing machine, for example with a rotating drum.

According to one example, the absorbent also comprises an attachment element, for example a label, placed on an outer face of the upper layer. According to one example, the attachment element is accessible when the absorbent is in the washing configuration.

According to one example, the absorbent also has at least one and preferably a pair of elastic members extending in the main direction and arranged along the stack, and preferably along the longitudinal edges of the absorbent . Thus, the absorbent allows a good hold on the thighs.

According to one example, the absorbent comprises a pair of elastic members, each elastic being inserted between the upper layer and the lower layer along their respective edges, according to the main direction.

According to one example, the opening has at least one and preferably a pair of elastic members extending along at least part of the periphery of the opening. Preferably, the opening has at least one pair of elastic members extending in the main direction along the longitudinal edges of the opening. The elastics are therefore substantially parallel to each other and each arranged on a longitudinal edge of the opening. Bringing the opening into contact with the skin is thus facilitated, thus limiting the collection of bodily fluids outside the reservoir.

According to one example, each layer is formed from a bio-based fabric. Thus, good ventilation of the skin is allowed when wearing the absorbent compared to existing solutions. In particular, plastic materials generally induce maceration by limiting this aeration, and synthetic materials generally dry out the skin. In addition, the environmental impact of the absorbent is minimized. According to a more specific example, each layer is formed of a fabric from organic farming. When the fabric comes from organic farming, the presence of harmful products, such as pesticides, is avoided.

According to one example, the upper layer is formed of a fabric chosen from flannel, jersey and a diaper fabric. These fabrics, soft to the touch, limit the risk of irritation of the skin by the upper layer of the absorbent. In one example, the top layer is cotton flannel.

According to one example, the layers of the stack free of the upper layer are formed of an absorbent fabric, for example chosen from fleece, sponge and jersey. According to an example, the layers of the free stack of the top layer are hemp and cotton fleece

It is specified that in the context of the present invention, the term washable change is usually qualified as washable diaper in French and diaper in English.

In the rest of the description, use will be made of terms such as “upper”, “lower”, “longitudinal”, “transverse”, “front”, “rear”, “above” and “under”. These terms should be interpreted relatively in relation to the normal position of use of the fixed absorbent included in a washable diaper.

For example, "longitudinal" refers to the longitudinal axis of the washable diaper, according to its main dimension of extension. This direction thus substantially corresponds to the sagittal direction of the user. According to another example, the "front" of the absorbent designates the part of the absorbent intended to be placed on the front face of the body. The "back" of the absorbent designates the part of the absorbent intended to be placed on the back side of the body. "Internal face" and "external face" are understood to be in the normal position of use of the fixed absorbent included in a washable diaper, "internal face" designating the faces facing the body, "external face" designating the faces facing outwards, the outside being opposite the body in a direction perpendicular to a plane comprising the main direction of extension of the absorbent.

When the layers are "superimposed", they each extend along a main direction, these directions being superimposed. The word "superimposed" does not necessarily imply that these layers are in contact.

The washable diaper 3 is now described with reference to Figure 1. The washable diaper 3 includes the absorbent 1 and the panties 2 for protection. The absorbent 1 is configured to retain bodily fluids, and more particularly urine and stool. The protective pants 2 are associated with the absorbent 1 and make it possible to keep the user, for example a child, dry, even if the absorbent 1 is made wet by bodily fluids. For this, panties 2 are generally made from an impermeable fabric, that is to say that the fabric does not let a liquid pass through it. In general, the panties 2 and the absorbent 1 are configured to be comfortable, and in particular to allow great freedom of movement for a child wearing the diaper 3. The panties 2 and the absorbent 1 are further configured to offer the best possible absorption capacity as well as a good seal, i.e. to prevent leakage of bodily fluids through the diaper 3.

Panties 2 are first described with reference to Figure 1. Panties 2 can be configured to be attached to the child's hips. For this, the panty 2 may comprise at least part of its corners, or even at each corner, a projection of fabric 24 extending in the transverse direction y, and having an attachment member 23. The projections of fabric 24 and the fasteners 23 can be configured to hold the pants 2 in a wearing configuration on the hips of the child, forming once the fasteners 23 are attached, two side openings to pass the legs of the 'child. For example, the fastening members 23 of the pants are complementary hook and eye pairs. According to another example, illustrated in FIG. 9, the attachment members 23 of the panties 2 are press studs. Alternatively, panties 2 can be configured without a fastener to have two side openings to pass the child's legs through, and can be put on directly.

The panties 2 can also be configured to surround the absorbent 1, in order to improve the sealing of the washable diaper 3. According to the example illustrated by FIG. 1, the panties 2 as well as the absorbent 1 extend along a main direction of longitudinal extension x and a transverse direction y. The absorbent 1 can be attached to the pants 2 so that the longitudinal edges 20 and the lateral edges 21 of the pants are arranged opposite the edges of the absorbent 1, or even on either side of the absorbent 1 .

Panties 2 and absorbent 1 can be permanently fixed, for example the absorbent is sewn to the protective panties. Alternatively, absorbent 1 can be configured to be attached manually and removably to panties 2. Absorbent 1 being removable, it can be detached from panties 2, for example before washing. It is therefore not necessary to wash panties 2 each time you use absorbent 1. Waterproof fabrics are more difficult to withstand repeated washing and at high temperatures, so the life of washable diaper 3 can be increased. In addition, the use of the washable diaper 3 is made more practical, which saves time on a daily basis.

According to the example illustrated in Figure 1, the absorbent is configured to be attached to the pants 2 substantially in alignment with its longitudinal edges 20. Thus, the absorbent does not extend along the projections 24 of the pants . This makes it possible to minimize the quantity of fabric placed on the hips of the child, which can induce an extra thickness that can hinder the child in his movements and interfere with his clothing.

To attach the absorbent 1 to the pants 2, the pants 2 may include at least one fastener 22. The absorbent 1 may include at least one additional fastener 13. The fasteners 13 can be arranged at each corner of the absorbent, allowing good retention in position of the absorbent 1 on the pants 2 while avoiding disturbing the child. According to the example illustrated in Figure 1, the absorbent 1 is removably fixed to the pants 2 by a buttonhole. According to one example, the fasteners 22 to the absorbent 1 are buttons fixed to the pants 2 and can be fixed by openings 13 of buttonholes on the absorbent 1. The openings 13 of the absorbent 1 can be through relative to the absorbent 1, in order to facilitate the fixing of the buttons 22. Alternatively, the openings 13 can be arranged on part of the layers of the absorbent 1, for example on its lower layer 101. Thus, the button 22 is included in the thickness of the absorbent 1 in the fixing position, to avoid its contact with the skin. At the level of the openings 13, the absorbent can also comprise a fabric reinforcement to limit the wear of the buttonhole. According to another example, the fasteners 22 to the absorbent 1 comprise press studs, each press stud comprising a male part fixed to one of the absorbent 1 and the pants 2 and a female part fixed to the other among the other among absorbent 1 and panties 2.

The washable diaper 3 may further comprise an extension 14 mounted in the extension of the absorbent 1, for example along the direction x, and described with reference to FIGS. 8 and 9. The extension 14 may be arranged so as to present a covering partial with the absorbent 1, preferably along the main direction x. Preferably, the extension 14 is mounted in the extension of the absorbent 1 in the direction x, as described with reference to Figures 8 and 9. The extension 14 can be removably mounted on the pants 2, or even on the absorbent 1 and the panties 2. Since the extension can be mounted on the absorbent 1, it is understood that the absorbent 1 can include this extension 14. The extension 14 makes it possible to increase the size of the absorbent 1 according to the main direction x, as shown in Figure 9. Thus, the absorbent 1 can be adapted to the growth of the child, which limits the need to change it for a larger model. The cost associated with using Absorbent 1 is reduced, and Absorbent 1 is made more durable. Absorbent 1 may be sufficient to absorb urine, and extension 14 may be more particularly suitable for retaining excess stool, to protect the front or back of panties 2. Thus, extension 14 extends the life of absorbent 1 and the washable diaper incorporating absorbent 1.

As illustrated by Figures 8 and 9, the extension 14 can be formed by at least two layers of absorbent fabrics, of the same nature as the layers of the absorbent 1. According to one example, the extension comprises two layers of fleece of hemp sewn together, for example by their entire outline. A top layer 143 may be intended to be in contact with the child's skin. In order to ensure a good seal, the layers of the extension 14 can have the same width as the absorbent 1. The edges of the extension, along the direction x, can include a pair of elastic member 142 to improve the tightness of diaper 3 at extension 14.

The extension 14 may comprise two attachment members 140 to the absorbent 1, configured to cooperate with two attachment members 13 of the absorbent 1. The extension 14 may further comprise two attachment members 141 to the pants 2, configured to cooperate with two fasteners 22 of the pants 2. For example, the fasteners 140, 141 are press studs.

Absorbent 1 will now be described with reference to Figures 2 through 11. Absorbent 1 is configured to retain bodily fluids. For this, the absorbent 1 comprises an assembly 10 comprising a plurality of layers of fabric, and in particular of absorbent fabric. Each layer has two opposite faces. Each face, laid flat, extends mainly in one plane. The contour is inscribed in a plane parallel to that of the faces. The length and width of the outline are also included in planes parallel to the faces. Preferably, the length has a dimension along the x direction, and the width has a dimension along the y direction. In a configuration for wearing the absorbent, and as illustrated in FIG. 2, the absorbent 1 comprises an upper layer 100 having an internal face 1000 intended to be in contact with the skin. In the configuration for wearing the absorbent, and as illustrated in FIG. 3, the absorbent 1 comprises a lower layer 101 having an outer face 1010 intended to face towards the outside of the assembly 10 with respect to the upper layer 100.

The absorbent 1 can comprise at least one elastic member 11, such as a rubber band, extending along the longitudinal direction x, and placed on either side of the assembly 10. Preferably, the absorbent 1 comprises a pair of elastic members 11, such as rubber bands, extending along the longitudinal direction x, and arranged on either side of the assembly 10. More particularly, each elastic member 11 can extend along each longitudinal edge of the assembly 10, as illustrated in Figures 2 and 3. Thus, the elastic members 11 allow a good hold of the absorbent 1 at the level of the thighs and therefore improve its sealing. The risk of the panties 2 being soiled is minimized. In particular, in the event of heavy stools, the risk of overflow in the pants 2 is minimized. According to one example, a rubber band 11 is inserted between the upper layer 100 and the lower layer 101 along each of their longitudinal edges 1002, 1011.

The assembly 10 comprises a stack 102 of a plurality of intermediate layers 1020, the stack being configured to retain, even absorb, bodily fluids. In order to provide sufficient absorption capacity, the stack 102 comprises at least three intermediate layers 1020 and the upper layer 100 and the lower layer 101. At least a part of these layers can be made of an absorbent fabric. These layers are preferably at least partly superimposed, in order to increase the thickness of the absorbent 1 and thus its absorption capacity. In the following, the layers 1020 of the stack 102 can designate the intermediate layers 1020, or even the intermediate layers 1020, the upper layer 100 and the lower layer 101.

The layers 1020 of the stack 102 can be configured to form a stack 102, or even an assembly 10, in one piece. Thus, each layer 1020 is attached to at least one other layer 1020 of the stack 102. When wearing the diaper 3, or when washing the absorbent 1, the risk that the layers 1020 of the stack 102 separate is avoided. Thus, the hold of absorbent 1 in the diaper is further improved, which minimizes the risk of leakage. Furthermore, it is not necessary to reassemble the different layers 1020 of the stack 102 in the absorbent 1 before its use. After washing, absorbent 1 can be more easily ready for use because it does not require complex and/or tedious handling. According to one example, each layer of the stack 102 is sewn to at least one other layer of the stack 102. In the following, reference is made to the non-limiting example in which the layers 1020 of the stack 102 are sewn together.

In addition, at least a portion of the layers 1020 of the stack 102, and preferably each intermediate layer 1020, can only be partially sewn to at least one other layer 1020 of the stack 102. Thus, each intermediate layer 1020 can be sewn to at least one other layer 1020 by only a portion of its outline. Each intermediate layer 1020 can thus be spaced from its adjacent layer or layers, or in an equivalent consecutive manner, in the stack 102. The circulation of water and air at the surface of each layer 1020 is thus facilitated. As the air can circulate better, better aeration of the absorbent during its wearing is obtained. The circulation of water and cleaning products is facilitated when washing the absorbent. Washing is therefore made more efficient. The amount of residue from washing products is also limited, which minimizes the risk of skin irritation. Finally, the drying of the absorbent is facilitated at the end of the wash. Note that the outline of a layer 1020 of the stack 102 does not necessarily designate the physical delimitation of the layer 1020, but can be located at a distance of up to 1 cm from this physical delimitation.

Each intermediate layer 1020 is assembled with at least one layer which is consecutive to it, the consecutive layer being taken from among the upper layer 100, the lower layer 101 and another intermediate layer 1020. More particularly, for at least one set of intermediate layers 1020 , each intermediate layer 1020 can be assembled with a first consecutive layer, placed opposite a first face of the intermediate layer 1020. Each intermediate layer 1020 of this set can be assembled with a second consecutive layer, placed opposite a second face of the intermediate layer 1020, the second face being opposite the first face. The first and second consecutive layers can be taken from among the upper layer 100, the lower layer 101 and another intermediate layer 1020. Each intermediate layer 1020 of the set can be assembled with the first consecutive layer by a first portion of its contour, and with the second consecutive layer by a second portion of its outline. The first portion and the second portion have in particular an overlap of less than 30% of the perimeter of the contour, preferably an overlap of less than or equal to 20%. The first portion and the second portion can be split or continuous. Preferably for each intermediate layer 1020 of the assembly, the second portion and the second portion are chosen so that at least 80%, or even at least 90%, or even 100% of the contour of the intermediate layer is joined to the first layer consecutive and the second consecutive layer. The appearance of a preferential path during the absorption of a bodily fluid is thus limited, which makes it possible to better distribute the bodily fluids in the absorbent 1. Its absorption capacity is increased while minimizing the risk of leakage of absorbent 1.

According to one example, the intermediate layers 1020 can be of ellipsoid shape. According to an example, with reference to FIGS. 5 and 10, the outline of the layers 1020 has longitudinal edges 1020a and lateral edges 1020b. The longitudinal edges 1020a have a length in the x direction, and the side edges 1020b have a width in the y direction. The longitudinal edges 1020a and the lateral edges 1020b can be differentiated by a break in the continuity of the outline. At this break in continuity, the tangents at the edge of the layers 1020 evolve in a non-continuous manner. According to one example, the longitudinal edges 1020a are parallel. Side edges 1020b may be curves joining longitudinal edges 1020a. According to an example referenced in the figures, the layers 1020a, or even all the layers of the absorbent 1, can be rectangular in shape. The dimension of the length, taken along the main direction x, can be greater than the dimension of the width.

According to one example, at least two non-consecutive intermediate layers 1020 are each assembled with the layer which is consecutive to them by only one of: one or more portions at least of its longitudinal edges 1020a, and one or more portions at least of its side edges 1020b. At least one intermediate layer 1020, placed between these intermediate layers 1020, is assembled with the layer 1020 which is consecutive to it by at least the other among: one or more portions at least of its longitudinal edges 1020a, and one or more portions at least of its side edges 1020b.

According to the example illustrated by Figures 10 and 11, several intermediate layers can be sewn together by their longitudinal edges 1020a and one of their lateral edges 1020b to form a first subset. This first sub-assembly can be sewn by its two side edges, as illustrated by the close dashed lines, to a second sub-assembly assembled in a similar way. Thus, a single line of stitching along each longitudinal edge 1020a makes it possible to assemble the intermediate layers 1020 of each subassembly, facilitating the manufacture of the absorbent while improving its absorption capacity.

According to an example illustrated by FIGS. 6 and 7, each intermediate layer 1020, or even each layer of absorbent 1, can be sewn with the consecutive layer 1020 by, alternately, only one among at least a portion of its longitudinal edges 1020a and at least a portion of its side edges 1020b. Thus two intermediate layers 1020 adjacent or directly in contact are sewn together only by at least a portion of their longitudinal edges 1020a or at least a portion of their lateral edges 1020b. For a given intermediate layer 1020, of which a first face, for example an external face, is placed in contact with a first consecutive layer in the stack 102 and of which a second face, for example an external face, is placed in contact with a second consecutive layer in the stack 102, this layer can be sewn to the first consecutive layer by a portion at least of one of its length and its width, and sewn to the second consecutive layer by a portion at least the other among its length and width. Thus, the spacing between the interlayers 1020 is maximized. The circulation of water and air on the surface of each 1020 layer is thus further optimized. Sewing each layer two by two by alternating their width and their length also makes it possible to limit the wear of absorbent 1, including for intensive use and washing. According to one example, the intermediate layers 1020 are sewn together so that no unsewn edge between a first layer and a second layer is directly opposite another unsewn edge between the second layer and a third layer, for three 1020 consecutive intermediate layers.

Furthermore, the upper layer 100 may have an opening 1001, and be configured to form, with the lower layer 101, a reservoir for collecting bodily fluids. At least a part of the periphery of the upper layer 100 is assembled, preferably sewn, to the periphery of the lower layer 101. Preferably, a complementary part of the periphery of the upper layer 100 and of the periphery of the lower layer 101 is assembled, preferably sewn to at least one intermediate layer 1020. Alternatively, the upper layer 100 and the lower layer 101 can be sewn together by each of their edges, or even the entire perimeter of the upper layer 100 can be assembled, preferably sewn , around the lower layer 101. Thus, the bodily fluids pass through the opening 1001 to be collected in the reservoir 103. For this, and as illustrated in Figures 2 and 3, the reservoir 102 can be delimited at least by the upper layer 100 and the lower layer 101. Preferably, the reservoir 103 is closed except for the opening 1001. When wearing the absorbent 1, the layers 1020 of the emp ilement, in addition to the upper layer 100 and the lower layer 101, are contained in the volume of the reservoir 103. Thus, a good hold of the stack is obtained for effective absorption of body fluids by limiting leaks.

According to the example illustrated in FIGS. 2 and 3, the upper layer 100 and the lower layer 101 are sewn together by each of their longitudinal edges 1002, 1011. The stack 102 can comprise at least one intermediate layer 1020, sewn to at least at least one of the upper layer 100 and the lower layer 101 by their side edges 1003, 1012.

As illustrated in FIG. 2, the opening 1001 can be placed centrally on the upper layer 100. Provision can be made to change its position further forward or backward from the absorbent 1, depending for example on the sex of the child. . The opening 1001 may also have a pair of elastic members 1001a extending in the longitudinal direction x along the longitudinal edges of the opening 1001. Alternatively, a single elastic member may be provided, for example having a closed contour , fixed on the periphery of the opening 1001. Thus, when wearing the absorbent 1, the contacting of the opening 1001 on the skin is facilitated and thus limits the collection of bodily fluids outside the reservoir 103.

Assembly 10 can be configured to have two configurations: an absorbent port configuration and a washout configuration. In the wearing configuration, the interlayers 1020 can be forced into the volume of the tank 103. In the washing configuration, the stack 102 can be extracted at least in part from the tank 103 through the opening 1001, so that the intermediate layers 1020 are no longer constrained in the volume of reservoir 103.

The washing configuration is for example illustrated in Figure 5. Compared to the wearing configuration, the upper layer 100 can be turned over by its opening 1001, extracting the intermediate layers 1020. The intermediate layers 1020 can then be spaced from the upper layer 100 and the lower layer 101, in a direction z substantially perpendicular to the longitudinal direction also designated main direction x. The circulation of water, detergents and air is thus facilitated in the washing configuration. Washing and drying of absorbent 1 can be improved.

Synergistically, when each intermediate layer 1020, or even each layer of the absorbent 1, is sewn to at least one other layer 1020 by part of its outline, the washing as well as the drying of the absorbent 1 are further improved in the wash setup. Each layer 1020 is thus completely washed and aired. In particular, drying is faster than a washable change according to existing solutions and comprising the same number of layers.

To pass from one configuration to another, the assembly 10 can be configured to allow, through the opening 1001, the passage of at least part of the layers 1020 of the stack 102. By way of example , the wearing configuration is illustrated by Figure 2. The washing configuration can be illustrated by Figure 4. To switch alternately from one to the other of these configurations, the upper layer 100 can be turned over by its opening Alternatively, the stack 102 may have passed through the opening 1001. As illustrated in FIG. 4, in the washing configuration, the external face 1004 of this layer 100 may then find itself exposed, the internal face the upper layer 100 then being placed opposite the outer face 1010 of the lower layer 101. As illustrated in FIG. 5, following the reversal of the upper layer 100, the inner face 1013 of the lower layer 101 remains placed opposite the layers intermediaries 1020 of the 102 stack, as for the port configuration.

To facilitate this reversal, the opening 1001 can extend along the longitudinal direction x over at least 50%, or even over 60%, of the upper layer 100. The opening 1001 can also extend along the direction transverse y over at least 30%, or even over 50%, of the upper layer 100. The elastic members 1001a can also facilitate this reversal movement by deploying at least substantially in the longitudinal direction x.

Switching alternately from the port configuration to the washing configuration can be done manually by a user. Alternatively or additionally, the passage at least from the wearing configuration to the washing configuration can be carried out automatically, in particular by applying mechanical stresses to the absorbent 1, for example during washing in a washing machine. . Thus, once the absorbent 1 is soiled, the user does not have to place it himself in the washing configuration, to wash it.

The absorbent 1 can further comprise an attachment element 12, for example a label, arranged on an outer face 1004 of the upper layer 100. The absorbent being in its washing configuration, the label 12 can be made accessible directly to suspend the absorbent 1, using a clothes peg 4 according to the example illustrated by FIG. 5. The label 12 makes it possible to further facilitate drying in the open air, this solution also being practical, fast, efficient and at minimal cost. Furthermore, the label 12 being disposed on an outer face 1004 of the upper layer 100, the label 12 can be configured so as to be completely covered by the upper layer 100 when the absorbent is in its wearing configuration. Thus, tag 12 does not bother the child. For example, the label 12 may have a length less than the distance between its connection point to the upper layer 100 and the edge of the opening 1001, in the longitudinal direction x.

In order to increase its absorption capacity, the stack 102 can comprise more than four layers 1020, even more than six layers 1020, even at least nine layers 1020. As illustrated by FIGS. 6 and 7, the stack can comprise the upper layer 100 denoted A, the lower layer 101 denoted J, and eight intermediate layers denoted B to I.

• L_couture≥ 0,2*L_couche, de préférence L_couture≥ 0,4*L_couche.
• L_couture≤ 0,9*L_couche, de préférence L_couture ≤ 0,8*L_couche, de préférence L_couture≤ 0,7*L_couche.

Preferably, the attachment between two adjacent layers is ensured by at least one line of stitching and preferably by two parallel lines of stitching. Each seam line, if it extends along the length L_layerof the layer, can extend over a dimension L_sewingsuch as:

• L _seam ≥ 0.2*L _layer , preferably L _seam ≥ 0.4*L _layer .
• I_sewing≤ 0.9*L_layer, preferably L_sewing ≤ 0.8*L_layer, preferably L_sewing≤ 0.7*L_layer.

Preferably, 0.8*L _layer . ≥ L _seam ≥ 0.4*L _layer .

Preferably, each seam line, if it extends along the width l_layerof the layer, extends over a dimension l_sewingsuch as the_layer ≥ l_sewing ≥ 0.8*l_layer.

The stack 102 can be configured so as to minimize the size of the absorbent 1, in particular for a high number of layers 1020. For this, the stack 102 has a maximum absorption portion 1021 in which all the layers 1020 are superimposed. Maximum absorption portion 1021 is preferably positioned opposite opening 1001 in the wearing configuration, to enhance absorption of bodily fluids collected in reservoir 103. For example, opening 1001 and maximum absorption are substantially centered. The stack 102 also has a first portion of reduced absorption 1022, or even a second portion of reduced absorption 1023, in which only part of the layers 1020 of the stack are superimposed, or even partially superimposed.

For this, and with reference to Figures 6 and 7 and 10 and 11, the intermediate layers B to I of the stack 102 can be superimposed and have lengths less than that of the upper layer 100 and the lower layer 101, according to the longitudinal direction x. Thus, a very high absorption capacity is obtained, with for example nine layers 1020 in the portion of maximum absorption 1021 against six layers in an insert of the existing solutions. Good freedom of movement is also allowed for the child by limiting the number of layers 1020 of the stack at the front and at the back of the absorbent 1. According to one example, the length of the intermediate layer 1020 the longest is greater than 1.3, preferably greater than 1.5 and preferably greater than 2 times the length of the shortest intermediate layer 1020, to improve the child's freedom of movement. Absorbent 1 also has a cut closer to the body, making it easier to put on.

Furthermore, the intermediate layers B to I can be superposed and have widths less than that of the upper layer 100 and/or of the lower layer 101, in the transverse direction y. The child's freedom of movement is further improved by limiting the number of diapers to 1020 in the groin area. Preferably, the width of the narrowest intermediate layer 1020 is greater than 80% of the widest intermediate layer, or even 90%. Thus, the maximum absorption portion 1021 is wide enough to guarantee good absorption of the absorbent 1, while improving freedom of movement.

According to the example illustrated by FIGS. 6 and 7, the intermediate layers D to G, at the center of the stack 102 in the direction z, may have a minimum length. The layers above layer D and the layers below layer G can be partially superimposed by successively presenting an increasing length in the stack 102. Consequently, the reduced absorption portions 1022, 1023 comprise a decreasing number of layers in moving away from the portion of maximum absorption, along the longitudinal direction x. Thus, the total thickness of the absorber 1 varies progressively. The comfort of absorbent 1 is therefore improved. The layers of minimum length are thus not in contact with the child and do not risk disturbing him, in particular through the central opening 1001. According to the example illustrated by FIGS. 6 and 7, the layers A, B, C, H, I and J can extend both over the maximum absorption portion 1021 and over each of the reduced absorption portions 1022, 1023. The intermediate layers D and E, at the center of the stack 102, may extend only over the maximum absorption portion 1021 and over the first reduced absorption portion 1022. The intermediate layers F and G, at the center of the stack 102, may extend solely over the absorption portion maximum 1021 and on the second portion of reduced absorption 1023.

According to the example illustrated by FIGS. 10 and 11, the intermediate layers I to B may have a progressively decreasing length in the stack 102. The layer B has a minimum length and is arranged towards the outside of the absorbent 1, relative to other intermediate layers 1020, in the port configuration. Thus the diaper of minimum length is not in contact with the child and does not risk disturbing him, in particular through the central opening 1001.

According to the example illustrated by FIGS. 10 and 11, the intermediate layers I to B may have a progressively decreasing width in the stack 102. According to one example, the layers I to F form a sub-first set of the same width, and layers E to B form a second subset of the same width. The width of the second subset being less than that of the first subset. The layers of each subset can thus be assembled by their longitudinal edges 1020a by the same seam line. Layer B has a minimum width and is disposed outward from absorbent 1, relative to the other interlayers 1020, in the wearing configuration.

Each layer 1020 of the stack can be made of a biosourced fabric, or even from organic farming. Remember that a fabric is said to be biobased if it is entirely made from materials of biological origin. Thus, a fabric in which part of the constituent elements comes from the petrochemical industry is not biosourced. Thus, good ventilation of the skin is allowed when wearing absorbent 1, compared to existing solutions. In particular, plastic materials generally induce maceration by limiting this aeration, and synthetic materials generally dry out the skin. In addition, the environmental impact of Absorbent 1 is minimized. In addition, the fabric being from organic farming, the presence of harmful and/or irritating products, such as pesticides, is avoided.

The upper layer 100 can be formed from a soft-touch fabric so as to limit the risk of skin irritation. For example, the top layer is flannel, and more specifically cotton flannel. Layers 1020 of stack 102, not including top layer 100, may be formed of an absorbent fabric. For example, the absorbent fabric is fleece. The fleece has a brushed sponge face Preferably, the upper layer of the stack 102 has a brushed sponge face arranged facing the user. Thus, the softer side of the fabric can be in contact with the skin through the opening 1001. This fabric is particularly absorbent while remaining soft to the touch and flexible to increase the comfort of the absorbent 1. According to a For example, the layers of the top layer free stack are hemp and cotton fleece.

According to an example, the absorbent 1, or even the washable diaper 3 does not contain any material from petrochemicals. All the fabrics of absorbent 1 can be biosourced, including for protection panties 2. According to one example, the fabrics are undyed. The sewing thread can be cotton, and be free of polyester. The elastics 1001a, 11 can be made of natural rubber. The panties 2 can be made of wool and include buttons 22 made of natural material, for example wood.

In the following, an example of a method of assembling the absorbent 1 is described with reference to FIG. 7. The parts sewn together of the longitudinal edges 1020a and of the side edges 1020b of the layers 1020 are hatched and connected by the arrows hatched with the same texture.

Nine layers of absorbent fabric B,C,D,E,F,G,H,I,J and the upper layer 100, denoted A in soft fabric can be provided, even cut. Layers E and F are sewn by a part of their length. Layers D and E, then F and G are sewn by their width. Layers C and D, then G and H are sewn along the length of layers D and G. Layers H and C are then sewn along their width. The unsewn length of layers C and H are sewn together with layers B and I respectively. The remaining unsewn lengths of layers B and I are sewn together. Layers B and I are sewn across their width with layers A and J respectively.

In the following, another example of a method of assembling the absorbent 1 is described with reference to FIG. hatched arrows showing the same texture. The distinctive steps of the method previously described are detailed.

Layers I to F can form a first subset of the same width, and layers E to B can form a second subset of the same width. For each subset, the different layers can be superposed and aligned along one of their side edges 1020b. Then, the subassembly can be assembled by sewing the layers together by their two longitudinal edges 1020a and by the lateral alignment edge 1020b. The longest layer of each subset, for example I and E, is sewn only by its two side edges on the consecutive layer, respectively J and F.

For the two methods previously described, the label 12 can be sewn by one edge to the outer face 1004 of layer A.

An elastic of approximately 10 cm can be inserted on each longitudinal edge of the opening 1001 of the layer A. A buttonhole opening 13 with a cotton reinforcement can be made on the layer J. The layers A and J are then sewn together over substantially their entire length, or even their entire contour, by topstitching 1 cm from their edge to insert the pair of elastic bands 11 by sliding. Each sliding housing of the pair of elastic bands 11 can be closed by topstitching. The four corners of layer A at the notches are then topstitched, then sewn to the four corners of layer J.

During assembly, the edges can be sewn by overcasting between the layers. The unsewn edges of the layers of stack 102 may be overcast to prevent fraying.

In view of the foregoing description, it clearly appears that the invention proposes an improved absorbent for a washable diaper, more particularly allowing sufficient absorption of the absorbent while facilitating its use, in particular by improving its washing and drying.

The invention is not limited to the embodiments described above and extends to all the embodiments covered by the claims.

In the preceding description, reference has been made to the case in which the absorbent, or even the washable diaper, is intended to be worn by a child user. Provision can be made for the absorbent, or even the washable diaper, to be worn by an adult user, and more particularly for an application to adult incontinence, for example in geriatrics.
LIST OF REFERENCES
1 Absorbent
10 Assembly
100 Top Layer
1000 Internal face
1001 Opening
1001a Elastic organ
1002 Longitudinal edge
1003 Side edge
1004 Outer side
101 Bottom Layer
1010 Outer face
1011 Longitudinal edge
1012 Side edge
1013 Inner face
102 Stacking
1020 Stack Layer
1020a Longitudinal edge
1020b Side edge
1021 Portion of maximum absorption
1022 First portion of reduced absorption
1023 Second Portion of Reduced Absorption
103 Reservoir
11 Elastic body
12 Attachment element
13 Fastener
14 Expansion
140 Absorbent attachment element
141 Panty hook
142 Elastic body
143 Upper Layer
1430 Longitudinal edge
2 Panties
20 Longitudinal edge
21 Side edge
22 Fastener
23 Attachment body
24 Screening
3 washable diapers
4 Clamp
x longitudinal direction
y transverse direction

Claims (18)

Absorbent (1) for washable diapers (3), comprising an assembly (10) comprising:

• a plurality of fabric layers, wherein, in an absorbent wearing configuration:
  • an upper layer (100) has an internal face (1000) intended to be in contact with the skin of a user, and
  • a lower layer (101) has an outer face (1010) facing outward,

the absorbent (1) being characterized in that:

• the assembly (10) comprises a stack (102) comprising at least three intermediate layers (1020), distinct from the upper layer (100) and from the lower layer (101), the at least three intermediate layers (1020) each extending along a main direction (x) and being at least partially superimposed along a second direction (z) substantially perpendicular to the main direction (x), the at least three intermediate layers (1020) each having an outline;
• for at least one set of intermediate layers (1020), each intermediate layer (1020) is assembled with a first consecutive layer, placed opposite a first face of the intermediate layer (1020) and with a second consecutive layer, placed facing a second face of the intermediate layer (1020) opposite the first face, the first and second consecutive layers being taken from among the upper layer (100), the lower layer (101) and another intermediate layer (1020), so that each intermediate layer (1020) of said assembly is assembled:
  • with the first consecutive layer by a first portion of its outline,
  • with the second consecutive layer by a second portion of its outline, the first portion and the second portion having an overlap of less than 30% of the perimeter of its outline.

Absorbent (1) according to the preceding claim, in which the contour of each intermediate layer (1020) has longitudinal edges (1020a) and lateral edges (1020b) and:

• at least two non-consecutive intermediate layers (1020) are each assembled with a layer which is consecutive to them by only one of: at least one or more portions of their longitudinal edges (1020a), and at least one or more portions of their side edges (1020b), and
• at least one intermediate layer (1020), arranged between said at least two non-consecutive intermediate layers (1020), is assembled with a layer (1020) which is consecutive to it by at least the other among: one or more portions of at least its longitudinal edges (1020a), and at least one or more portions of its lateral edges (1020b).

Absorbent according to any of the preceding claims, wherein each intermediate layer (1020) is assembled with a layer which is consecutive to it by, alternately, only one of: at least one or more portions of its longitudinal edges (1020a), or at least one or more portions of its lateral edges (1020b). Absorbent (1) according to any one of the preceding claims, in which the stack (102) has a portion of maximum absorption (1021) at right angles to which all the intermediate layers (1020) are superimposed, the portion of maximum absorption (1021) being arranged, in the wearing configuration, along the main direction (x) and in a direction from the front to the back of the absorbent (1), and according to a third direction (y) perpendicular to the main direction (x) and to the second direction (z), in a direction from left to right of the absorbent (1), after a first portion of reduced absorption (1022) in which only a part of the intermediate layers (1020) are superimposed. Absorbent (1) according to the preceding claim, in which the portion of maximum absorption (1021) is comprised, in the wearing configuration, according to the main direction (x) and in a direction from the front to the back of the absorbent (1) and in the third direction (y) and in a direction from left to right of the absorbent (1), between the first portion of reduced absorption (1022) and a second portion of reduced absorption (1023) in which only part of the intermediate layers (1020) are superimposed. Absorbent (1) according to any one of the preceding claims, in which the stack (102) free of the upper layer (100) comprises at least six layers (1020), and more preferably nine layers (1020). Absorbent (1) according to any one of the preceding claims, in which the upper layer (100) has an opening (1001) and is configured to form with the lower layer (101), in the port configuration, a reservoir (103) for collection of bodily fluids, and the assembly (10) is configured to allow, when not in the wearing configuration, the displacement of the intermediate layers (1020) through the opening (1001) of the upper layer (100) so as to changing the assembly (10) from the port configuration to a wash configuration. Absorbent according to the preceding claim, configured so that the displacement of the intermediate layers (1020) through the opening (1001) of the upper layer (100) is carried out manually. Absorbent according to any one of the two preceding claims, configured so that the movement of the intermediate layers (1020) through the opening (1001) of the upper layer (100) takes place automatically when the absorbent is agitated or gone through a wash cycle in a washing machine. Absorbent according to any one of claims 7 to 9, the absorbent further comprising a gripping element (12) disposed on an outer face (1004) of the upper layer (100) and accessible when the absorbent is in the washing configuration. Absorbent (1) according to any one of the preceding claims, the absorbent (1) also has at least one and preferably a pair of elastic members (11) extending in the main direction (x) and arranged along the stack (102). Absorbent (1) according to any one of the preceding claims, in which the upper layer (100) has an opening (1001) and is configured to form with the lower layer (101), in the port configuration, a reservoir ( 103) for collecting bodily fluids, the opening (1001) having at least one and preferably a pair of elastic members (1001a) extending around a perimeter of the opening (1001). Absorbent (1) according to any of the preceding claims, wherein each layer (1020) is formed from a bio-based fabric. Absorbent (1) according to any one of the preceding claims, in which the upper layer (100) is formed of a fabric chosen from flannel, jersey and a diaper fabric. Absorbent (1) according to any one of the preceding claims, in which the layers (1020) of the stack (102) free of the upper layer (100) are formed of an absorbent fabric, for example chosen from fleece, sponge and jersey. A washable diaper (3) comprising an absorbent (1) according to any of the preceding claims, and a protective panty (2), preferably the protective panty (2) is made of a material which is more impermeable than the diapers of fabric forming the stack (102). Washable diaper (3) according to the preceding claim, in which the absorbent (1) is configured to be fixed manually and in a removable manner to the pants (2). Washable diaper according to any one of the two preceding claims, further comprising an extension (14) removably mounted on the panty (2) and arranged so as to present a partial overlap with the absorbent (1) according to the main direction (x).