EP1383403A1 - Absorbent and desorbent device - Google Patents

Absorbent and desorbent device

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Publication number
EP1383403A1
EP1383403A1 EP02732800A EP02732800A EP1383403A1 EP 1383403 A1 EP1383403 A1 EP 1383403A1 EP 02732800 A EP02732800 A EP 02732800A EP 02732800 A EP02732800 A EP 02732800A EP 1383403 A1 EP1383403 A1 EP 1383403A1
Authority
EP
European Patent Office
Prior art keywords
absorbent
micro
membrane
desorbent
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02732800A
Other languages
German (de)
French (fr)
Other versions
EP1383403B1 (en
Inventor
Gérard BIWAND
Jacques Sonderer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Podiatrist Consulting (Societe a Responsabilite Limitee)
Original Assignee
International Podiatrist Consulting (Societe a Responsabilite Limitee)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Podiatrist Consulting (Societe a Responsabilite Limitee) filed Critical International Podiatrist Consulting (Societe a Responsabilite Limitee)
Publication of EP1383403A1 publication Critical patent/EP1383403A1/en
Application granted granted Critical
Publication of EP1383403B1 publication Critical patent/EP1383403B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0045—Footwear characterised by the material made at least partially of deodorant means
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/10—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined specially adapted for sweaty feet; waterproof
    • A43B17/102—Moisture absorbing socks; Moisture dissipating socks
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials

Definitions

  • the present invention relates to the field of absorbent materials, in particular used as articles of clothing or as products for household use and relates to an absorbent and desorbent device.
  • Absorption of moisture, especially exudate or splashing water in the home is an ongoing problem. Indeed, this absorption, which is generally carried out by means of particularly absorbent fabrics, necessitates frequent changes of said absorbent products, with a view to their cleaning and drying.
  • the aim of the present invention is to overcome these drawbacks by proposing an absorbent and desorbent device allowing, on the one hand, rapid and effective absorption of any moisture, in particular excessive sweating or spray of water and, on the other hand, a rapid desorption of the accumulated moisture avoiding any undesirable mycotic or bacterial formations
  • the absorbent and desorbent device according to the invention is characterized in that it is essentially constituted by at least one micro membrane porous with absorbent and desorbent properties, by at least one permeable porous coating and by at least one waterproof damping underlay, essentially with closed cells.
  • FIG. 1 is an exploded perspective view of a device according to the invention in the form of a sole
  • Figure 2 is a view similar to that of Figure 1 of a device in the form of a bath mat.
  • Figures 1 and 2 of the accompanying drawings show an absorbent and desorbent device which is essentially constituted by at least one microporous membrane with absorbent and desorbent properties 1, by at least one porous permeable coating 2 and by at least one impermeable damping underlayer , mainly with closed cells.
  • microporous membrane with absorbent and desorbent properties 1 is permeable to all fluids on its two faces.
  • a membrane 1 is advantageously based on a micro-porous polyolefin of the ultra-high density polyethylene type loaded with silica, as known in particular from EP-A-0 892 647.
  • This membrane whose porosity is greater than 60%, has a very high absorbency and desorbs very quickly, so that a return to the initial characteristics of the product can be obtained in less than two hours.
  • the material constituting this membrane 1 has a good capacity for absorbing shocks, thus avoiding the effect of microtrauma and increasing comfort when walking and practicing sports.
  • this membrane which can be cut very easily and which remains undeformable even after intensive use, is very easy to maintain, can be washed with soap and water, and participates very effectively in the fight against infections. mycotic and bacterial, because these can develop much more difficult in a dry environment than in a humid environment.
  • the micro-porous membrane with absorbent and desorbent properties 1 can be provided with grooves forming channels for evacuating moisture.
  • the permeable porous coating 2 can be constituted, in a case of use of the device as a shoe sole, either in the form of a woven, non-woven or synthetic textile coating, this coating being provided with micro-perforations or being highly porous and with good drying properties ( Figure 1).
  • a porous coating 2 is essentially intended to allow comfortable contact with the upper part of the device and must be easily permeable to water and air, in order to allow the easy and rapid passage of the liquids towards the membrane 1 and the rapid desorption of the membrane 1 placed under this porous coating 2.
  • the porous permeable coating 2 may advantageously be constituted by a covering fabric or nonwoven with high porosity and low absorption capacity. water. Indeed, in such a case, it is necessary that most of the moisture quickly penetrates into the microporous membrane 1 and that during desorption, the moisture can evaporate quickly without being retained by the coating 2, the latter obviously having to dry very quickly.
  • the waterproof damping underlayer 3 is advantageously pierced with holes large enough and numerous to allow the evacuation of moisture from below by evaporation. According to an alternative embodiment of the invention, the waterproof damping underlayer 3 may also not be provided with holes, when the microporous membrane 1 is provided with grooves forming channels for evacuating moisture.
  • the waterproof damping underlayer 3 may consist of a foam of an ethylene / vinyl acetate copolymer microperforated and of low thickness, namely of the order of 2 mm in the case of a sole.
  • foam simultaneously makes it possible to absorb micro-trauma when pressing on the device, for example during walking, and to exchange air with the micro-porous membrane 1, in particular from the underside. of the device, to promote desorption, when said device is no longer charged.
  • the foam constituting the impermeable micro-porous sub-layer 3 has good mechanical properties in tensile, tearing and abrasion, as well as good dynamic properties of resilience and resistance to bending. In addition, such a foam is not very sensitive to aging due to air, light, ozone and heat and is well resistant to the attacks of cold and fire. In addition, this foam has good resistance to fluids, such as oils, solvents, ketones, acids, gases and water.
  • the constituent elements of the absorbent and desorbent device according to the invention can be assembled together into a functional sandwich by sewing or by gluing. In the case of a seam, this is carried out around the entire periphery of the device with provision for additional seam lines between the perimeter seam, along diagonals and / or transverses and / or longitudinal ones. Such additional seam lines are necessary to avoid the appearance of folds causing discomfort when pressing on the device, for example when walking, so that the porous permeable coating 2 would wear out quickly.
  • the fusible product has a mesh such that it occupies a very small part of the total surface of the microporous membrane 1 and, preferably, approximately 12% of this surface, so that the capacities, on the one hand, of transmission moisture through the porous permeable coating 2 to the membrane 1 and, on the other hand, moisture evaporation from the membrane 1 through the porous permeable coating 2, are optimally maintained. This property is also used to ensure the possibility of air circulation between the underside of the membrane 1 and the waterproof damping underlay 3.
  • the absorbent and desorbent device can be in the form of a sole to be inserted into a shoe or in the form of a sole permanently integrated in a shoe and constituting the first mounting or sole of shoe cleanliness.
  • the absorbent and desorbent device can be provided, by coating, by spraying or other, with one or more layers of antibacterial and / or fungicidal agents.
  • the device according to the invention makes it possible to respond in a particularly effective manner to the problems posed by the needs for rapid absorption of moisture, in particular resulting from hypersudation.
  • This device can be reused very quickly, effectively, because of its rapid desorption power allowing it to return to the starting characteristics in a very short time.
  • the device according to the invention can provide an insulation function, both from heat and from cold.
  • this device attracts moisture and then dissipates it into the air, it notably respects physiological perspiration, unlike local anti-sweat treatments, when it is used as a sole in a footwear item.
  • the device according to the invention does not constitute any terrain favorable to the development of allergies, no allergenic component entering into its constitution.
  • the device allows a regression of certain trophic disorders, such as yeast infections or eczema, the aggravating factor of these disorders always being permanent humidity.
  • the invention it is possible to produce a device making it possible to quickly and efficiently absorb a large amount of moisture and to desorb, also quickly, said moisture, as soon as the wet source disappears.
  • This device is more particularly applicable in the form of a shoe sole; insole or insole, but is also applicable in other fields, in particular domestic, for example, for the rapid absorption of projections and for a corresponding desorption, allowing a prolonged use of the means of absorption and not a systematic replacement of it with the corresponding washing and drying costs.
  • the invention is not limited to the embodiments described and shown in the accompanying drawing. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to an absorbent and desorbent device, characterised in essentially comprising at least one micro-porous membrane (1) with absorbent and desorbent properties, by means of at least one porous permeable cover (2) and at least one impermeable cushioning sub-layer (3). The invention is particularly applicable in the field of absorbent materials, most particularly when used for items of clothing or domestic products.

Description

Dispositif absorbant et désorbant Absorbent and desorbent device
La présente invention concerne le domaine des matériaux absorbants, en particulier utilisés comme articles d'habillement ou comme produits à usage domestique et a pour objet un dispositif absorbant et désorbant. L'absorption de l'humidité, en particulier des exsudats ou des projections d'eau dans le cadre domestique constitue un problème permanent. En effet, cette absorption, qui est généralement réalisée au moyen de tissus particulièrement absorbants, nécessite de procéder à des changements fréquents desdits produits absorbants, en vue de leur nettoyage et de leur séchage.The present invention relates to the field of absorbent materials, in particular used as articles of clothing or as products for household use and relates to an absorbent and desorbent device. Absorption of moisture, especially exudate or splashing water in the home is an ongoing problem. Indeed, this absorption, which is generally carried out by means of particularly absorbent fabrics, necessitates frequent changes of said absorbent products, with a view to their cleaning and drying.
Ce problème est particulièrement important dans le cas de transpiration excessive, appelée hyperidrose, et notamment en ce qui concerne la transpiration par les pieds. Dans ce dernier cas, la transpiration est largement accentuée, voire aggravée par le port de chaussures. La vie quotidienne devient alors parfois difficile pour le porteur de chaussures obligé de lutter contre la transpiration et les effets quelquefois dévastateur de celle-ci.This problem is particularly important in the case of excessive sweating, called hyperidrosis, and in particular with regard to sweating by the feet. In the latter case, sweating is greatly accentuated, or even aggravated by wearing shoes. Daily life then becomes sometimes difficult for the shoe wearer forced to fight against perspiration and the sometimes devastating effects of it.
Les pratiquants sportifs sont largement exposés aux effets de la transpiration, du fait même du port de chaussures souvent assez hermétiques pendant de longues périodes.Sports enthusiasts are widely exposed to the effects of perspiration, due to the fact that they wear shoes that are often fairly tight for long periods.
Pour obvier à ces inconvénients, il a été proposé diverses améliorations des chaussures, notamment par utilisation de matériaux légers, en particulier de mousses performantes pour amortir les micro- traumatismes et par mise en œuvre de circulation d'air dans la structure même de la chaussure. Cependant, ces différentes améliorations n'ont pas permis de limiter l'hypersudation et d'améliorer l'intérieur même de la chaussure, à savoir la semelle de propreté.To overcome these drawbacks, various improvements have been proposed to the shoes, in particular by the use of light materials, in particular high-performance foams to absorb micro-trauma and by implementing air circulation in the structure of the shoe. . However, these various improvements have not made it possible to limit the sweating and to improve the very interior of the shoe, namely the insole.
Il a également été proposé de rajouter des semelles appelées "anti-transpirantes", dont l'efficacité est toutefois bien souvent très limitée. Le problème de l'hypersudation ou hyperidrose a également été traité par mise en œuvre de produits à appliquer directement sur la peau tels que des gels, des sprays, des poudres ou autres préparations magistrales, ou encore par vaporisation de produits anti-mycosiques et antibactériens directement dans les chaussures. Cependant, tous ces procédés de traitement n'ont été que d'une très faible efficacité.It has also been proposed to add soles called "antiperspirants", the effectiveness of which is however very often very limited. The problem of sweating or hyperidrosis has also been treated by using products to be applied directly to the skin such as gels, sprays, powders or other magistral preparations, or by spraying anti-fungal and antibacterial products. directly in the shoes. However, all of these treatment methods have been of very low efficiency.
Il a également été proposé de réaliser des semelles au charbon actif, en cuir ou en fibres synthétiques, qui présentent de bonnes capacités d'absorption de l'humidité et de lutte contre les odeurs. Toutefois, lorsque la capacité de saturation est atteinte, l'humidité reste prisonnière de la chaussure et entraîne une macération favorable à une prolifération bactérienne et à la rétention des odeurs.It has also been proposed to make soles with activated carbon, in leather or in synthetic fibers, which have good capacities for absorbing moisture and combating odors. However, when the saturation capacity is reached, the moisture remains trapped in the shoe and leads to maceration favorable to bacterial proliferation and the retention of odors.
Le problème de l'absorption d'humidité est également très crucial dans le cadre domestique, où il est souvent nécessaire de réaliser une absorption rapide de projection d'eau, en particulier dans les salles d'eau, par exemple au moyen des tapis de bain ou analogues. Dans de tels cas, les moyens d'absorption sont très rapidement saturés et une utilisation de ces moyens à long terme, sans séchage spécifique après une forte absorption ne peut pas être envisagée. En effet, le maintien d'un tapis de bain fortement imprégné d'humidité entraînerait inévitablement une impossibilité de ce tapis à sécher rapidement et sa détérioration avec un développement simultané de micro-organismes indésirables et néfastes pour la santé.The problem of moisture absorption is also very crucial in the domestic setting, where it is often necessary to carry out a rapid absorption of water spray, in particular in bathrooms, for example by means of carpets. bath or the like. In such cases, the means of absorption are very quickly saturated and a use of these means in the long term, without specific drying after a strong absorption cannot be envisaged. Indeed, maintaining a bath mat heavily impregnated with moisture would inevitably lead to the impossibility of this carpet to dry quickly and its deterioration with the simultaneous development of undesirable microorganisms harmful to health.
La présente invention a pour but de pallier ces inconvénients en proposant un dispositif absorbant et désorbant permettant, d'une part, une absorption rapide et efficace de toute humidité, en particulier d'une transpiration excessive ou d'une projection d'eau et, d'autre part, une désorption rapide de l'humidité accumulée évitant toutes formations mycosiques ou bactériennes indésirables A cet effet, le dispositif absorbant et désorbant conforme à l'invention est caractérisé en ce qu'il est essentiellement constitué par au moins une membrane micro poreuse à propriétés absorbantes et désorbantes, par au moins un revêtement poreux perméable et par au moins une sous-couche amortissante imperméable, essentiellement à cellules fermées.The aim of the present invention is to overcome these drawbacks by proposing an absorbent and desorbent device allowing, on the one hand, rapid and effective absorption of any moisture, in particular excessive sweating or spray of water and, on the other hand, a rapid desorption of the accumulated moisture avoiding any undesirable mycotic or bacterial formations For this purpose, the absorbent and desorbent device according to the invention is characterized in that it is essentially constituted by at least one micro membrane porous with absorbent and desorbent properties, by at least one permeable porous coating and by at least one waterproof damping underlay, essentially with closed cells.
L'invention sera mieux comprise, grâce à la description ci- après, qui se rapporte à des modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence au dessin schématique annexé, dans lequel : la figure 1 est une vue éclatée en perspective d'un dispositif conforme à l'invention sous forme de semelle, et la figure 2 est une vue analogue à celle de la figure 1 d'un dispositif sous forme de tapis de bain.The invention will be better understood from the description below, which relates to preferred embodiments, given by way of nonlimiting examples, and explained with reference to the appended schematic drawing, in which: FIG. 1 is an exploded perspective view of a device according to the invention in the form of a sole, and Figure 2 is a view similar to that of Figure 1 of a device in the form of a bath mat.
Les figures 1 et 2 des dessins annexés représentent un dispositif absorbant et désorbant qui est essentiellement constitué par au moins une membrane micro poreuse à propriétés absorbantes et désorbantes 1, par au moins un revêtement poreux perméable 2 et par au moins une sous-couche amortissante imperméable, essentiellement à cellules fermées.Figures 1 and 2 of the accompanying drawings show an absorbent and desorbent device which is essentially constituted by at least one microporous membrane with absorbent and desorbent properties 1, by at least one porous permeable coating 2 and by at least one impermeable damping underlayer , mainly with closed cells.
La membrane micro poreuse à propriétés absorbantes et désorbantes 1 est perméable à tous les fluides sur ses deux faces. Une telle membrane 1 est avantageusement à base d'une polyoléfine micro poreuse du type polyéthylène à ultra haute densité chargée de silice, telle que connue notamment par EP-A-0 892 647.The microporous membrane with absorbent and desorbent properties 1 is permeable to all fluids on its two faces. Such a membrane 1 is advantageously based on a micro-porous polyolefin of the ultra-high density polyethylene type loaded with silica, as known in particular from EP-A-0 892 647.
Cette membrane, dont la porosité est supérieure à 60 %, présente un très fort pouvoir absorbant et désorbe très rapidement, de sorte qu'un retour aux caractéristiques initiales du produit peut être obtenu en moins de deux heures. En outre, le matériau constituant cette membrane 1 présente une bonne capacité d'absorption des chocs, évite ainsi l'effet des microtraumatismes et accroît le confort lors de la marche et de la pratique sportive. De plus, cette membrane, qui peut être découpée très facilement et qui reste indéformable même après un usage intensif, est d'entretien très facile, pouvant être lavée à l'eau et au savon, et participe très efficacement à la lutte contre les infections mycosiques et bactériennes, du fait que celles- ci peuvent se développer de manière beaucoup plus difficile en milieu sec qu'en milieu humide. Selon une caractéristique de l'invention, la membrane micro poreuse à propriétés absorbantes et désorbantes 1 peut être pourvue de rainures formant des canaux d'évacuation de l'humidité.This membrane, whose porosity is greater than 60%, has a very high absorbency and desorbs very quickly, so that a return to the initial characteristics of the product can be obtained in less than two hours. In addition, the material constituting this membrane 1 has a good capacity for absorbing shocks, thus avoiding the effect of microtrauma and increasing comfort when walking and practicing sports. In addition, this membrane, which can be cut very easily and which remains undeformable even after intensive use, is very easy to maintain, can be washed with soap and water, and participates very effectively in the fight against infections. mycotic and bacterial, because these can develop much more difficult in a dry environment than in a humid environment. According to a characteristic of the invention, the micro-porous membrane with absorbent and desorbent properties 1 can be provided with grooves forming channels for evacuating moisture.
Le revêtement poreux perméable 2 peut être constitué, dans un cas d'utilisation du dispositif comme semelle de chaussure, soit sous forme d'un revêtement textile tissé, non tissé ou synthétique, ce revêtement étant muni de micro-perforations ou étant fortement poreux et présentant de bonnes propriétés de séchage (figure 1). Un tel revêtement poreux 2 est essentiellement destiné à permettre un contact confortable avec la partie supérieure du dispositif et doit être facilement perméable à l'eau et à l'air, afin de permettre le passage aisé et rapide des liquides vers la membrane 1 et la désorption rapide de la membrane 1 disposée sous ce revêtement poreux 2. Dans le cas d'utilisation du dispositif sous forme d'un tapis de bain, par exemple, le revêtement poreux perméable 2 peut avantageusement être constitué par un tissu ou un non tissé de recouvrement à forte porosité et à faible capacité d'absorption d'eau. En effet, dans un tel cas, il est nécessaire que l'essentiel de l'humidité pénètre rapidement dans la membrane micro poreuse 1 et que lors de la désorption, l'humidité puisse s'évaporer rapidement sans être retenue par le revêtement 2, ce dernier devant évidemment sécher très rapidement.The permeable porous coating 2 can be constituted, in a case of use of the device as a shoe sole, either in the form of a woven, non-woven or synthetic textile coating, this coating being provided with micro-perforations or being highly porous and with good drying properties (Figure 1). Such a porous coating 2 is essentially intended to allow comfortable contact with the upper part of the device and must be easily permeable to water and air, in order to allow the easy and rapid passage of the liquids towards the membrane 1 and the rapid desorption of the membrane 1 placed under this porous coating 2. In the case of using the device in the form of a bath mat, for example, the porous permeable coating 2 may advantageously be constituted by a covering fabric or nonwoven with high porosity and low absorption capacity. water. Indeed, in such a case, it is necessary that most of the moisture quickly penetrates into the microporous membrane 1 and that during desorption, the moisture can evaporate quickly without being retained by the coating 2, the latter obviously having to dry very quickly.
La sous-couche amortissante imperméable 3 est avantageusement percée de trous suffisamment grands et nombreux pour permettre l'évacuation de l'humidité par le dessous par évaporation. Selon une variante de réalisation de l'invention, la sous-couche amortissante imperméable 3 peut également ne pas être pourvue de trous, lorsque la membrane micro poreuse 1 est munie de rainures formant des canaux d'évacuation de l'humidité.The waterproof damping underlayer 3 is advantageously pierced with holes large enough and numerous to allow the evacuation of moisture from below by evaporation. According to an alternative embodiment of the invention, the waterproof damping underlayer 3 may also not be provided with holes, when the microporous membrane 1 is provided with grooves forming channels for evacuating moisture.
La sous-couche amortissante imperméable 3 peut être constituée par une mousse d'un copolymère éthylène / acétate de vinyle microperforée et de faible épaisseur, à savoir de l'ordre de 2 mm dans le cas d'une semelle. Une telle mousse permet simultanément d'assurer un amortissement des micro-traumatismes lors des appuis sur le dispositif, par exemple au cours de la marche, et un échange d'air avec la membrane micro poreuse 1, en particulier à partir de la face inférieure du dispositif, pour favoriser la désorption, lorsque ledit dispositif n'est plus chargé.The waterproof damping underlayer 3 may consist of a foam of an ethylene / vinyl acetate copolymer microperforated and of low thickness, namely of the order of 2 mm in the case of a sole. Such foam simultaneously makes it possible to absorb micro-trauma when pressing on the device, for example during walking, and to exchange air with the micro-porous membrane 1, in particular from the underside. of the device, to promote desorption, when said device is no longer charged.
La mousse constituant la sous-couche micro poreuse imperméable 3 présente de bonnes propriétés mécaniques à la traction au déchirement et à l'abrasion, ainsi que de bonnes propriétés dynamiques de résilience et de résistance à la flexion. En outre, une telle mousse est peu sensible au vieillissement dû à l'air, à la lumière, à l'ozone et à la chaleur et résiste bien aux agressions du froid et au feu. De plus, cette mousse a une bonne tenue aux fluides, tels que les huiles, les solvants, les cétones, les acides, les gaz et l'eau.The foam constituting the impermeable micro-porous sub-layer 3 has good mechanical properties in tensile, tearing and abrasion, as well as good dynamic properties of resilience and resistance to bending. In addition, such a foam is not very sensitive to aging due to air, light, ozone and heat and is well resistant to the attacks of cold and fire. In addition, this foam has good resistance to fluids, such as oils, solvents, ketones, acids, gases and water.
Les éléments constitutifs du dispositif absorbant et désorbant conforme à l'invention peuvent être assemblés entre eux en un sandwich fonctionnel par couture ou par collage. Dans le cas d'une couture, celle-ci est effectuée sur tout le pourtour du dispositif avec prévision de lignes de couture supplémentaires entre la couture de pourtour, suivant des diagonales et/ou des transversales et/ou des longitudinales. De telles lignes de couture supplémentaires sont nécessaires pour éviter l'apparition de plis provoquant une gêne lors d'un appui sur le dispositif, par exemple lors de la marche, de sorte que le revêtement poreux perméable 2 s'userait rapidement. Dans le cas d'un assemblage par collage, celui-ci est avantageusement effectué par collage par points ou par thermocollage au moyen d'un produit thermocollant 4 présentant une structure maillée et interposé, de part et d'autre de la membrane micro poreuse 1, respectivement entre le revêtement poreux 2 et la membrane micro poreuse 1 et entre cette membrane 1 et la sous-couche amortissante imperméable 3 (figures 1 et 2). Un tel produit collant est notamment disponible en bandes déposées sur un support de transfert, l'ensemble étant enroulé en bobines.The constituent elements of the absorbent and desorbent device according to the invention can be assembled together into a functional sandwich by sewing or by gluing. In the case of a seam, this is carried out around the entire periphery of the device with provision for additional seam lines between the perimeter seam, along diagonals and / or transverses and / or longitudinal ones. Such additional seam lines are necessary to avoid the appearance of folds causing discomfort when pressing on the device, for example when walking, so that the porous permeable coating 2 would wear out quickly. In the case of an adhesive bonding, this is advantageously carried out by point bonding or by fusing using a fusible product 4 having a mesh structure and interposed, on either side of the microporous membrane 1 , respectively between the porous coating 2 and the microporous membrane 1 and between this membrane 1 and the waterproof damping underlay 3 (Figures 1 and 2). Such a sticky product is in particular available in strips deposited on a transfer support, the assembly being wound up in coils.
Le produit thermocollant présente un maillage tel qu'il occupe une très faible partie de la surface totale de la membrane micro poreuse 1 et, de préférence, environ 12 % de cette surface, de sorte que les capacités, d'une part, de transmission de l'humidité à travers le revêtement poreux perméable 2 vers la membrane 1 et, d'autre part, d'évaporation de l'humidité à partir de la membrane 1 à travers le revêtement poreux perméable 2, sont maintenus de manière optimale. Cette propriété est également mise à profit pour assurer une possibilité de circulation d'air entre la face inférieure de la membrane 1 et la sous-couche amortissante imperméable 3.The fusible product has a mesh such that it occupies a very small part of the total surface of the microporous membrane 1 and, preferably, approximately 12% of this surface, so that the capacities, on the one hand, of transmission moisture through the porous permeable coating 2 to the membrane 1 and, on the other hand, moisture evaporation from the membrane 1 through the porous permeable coating 2, are optimally maintained. This property is also used to ensure the possibility of air circulation between the underside of the membrane 1 and the waterproof damping underlay 3.
Un assemblage par thermocollage permet de garantir une liaison parfaite entre les éléments 1 à 3 constitutifs du dispositif conforme à l'invention. Selon une caractéristique de l'invention, le dispositif absorbant et désorbant peut se présenter sous forme d'une semelle à insérer dans une chaussure ou sous forme d'une semelle intégrée de manière permanente dans une chaussure et constituant la première de montage ou semelle de propreté de la chaussure. Conformément à une autre caractéristique de l'invention, le dispositif absorbant et désorbant peut être pourvu, par revêtement, par pulvérisation ou autre, d'une ou de plusieurs couches d'agents antibactériens et/ou fongicides. La prévision de telles couches supplémentaires peut permettre de répondre à des exigences sévères de prévention de disséminations bactériennes ou mycosiques, notamment dans les domaines de la dermatologie, la diabétologie, en ce qui concerne la semelle et l'hôtellerie, la balnéothérapie et, d'une manière générale, lieux publics en ce qui concerne le tapis de bain.An assembly by heat sealing makes it possible to guarantee a perfect connection between the elements 1 to 3 constituting the device according to the invention. According to a characteristic of the invention, the absorbent and desorbent device can be in the form of a sole to be inserted into a shoe or in the form of a sole permanently integrated in a shoe and constituting the first mounting or sole of shoe cleanliness. According to another characteristic of the invention, the absorbent and desorbent device can be provided, by coating, by spraying or other, with one or more layers of antibacterial and / or fungicidal agents. The provision of such additional layers can make it possible to meet severe requirements for the prevention of bacterial or mycotic spread, in particular in the fields of dermatology, diabetology, with regard to the sole and hotels, balneotherapy and, in general, public places with regard to the bath mat.
Le dispositif conforme à l'invention permet de répondre de manière particulièrement efficace aux problèmes posés par les besoins d'absorption rapide d'humidité, notamment résultant de l'hypersudation. Ce dispositif peut être réutilisé très rapidement, de manière efficace, du fait de son pouvoir de désorption rapide lui permettant un retour aux caractéristiques de départ en un temps très court.The device according to the invention makes it possible to respond in a particularly effective manner to the problems posed by the needs for rapid absorption of moisture, in particular resulting from hypersudation. This device can be reused very quickly, effectively, because of its rapid desorption power allowing it to return to the starting characteristics in a very short time.
De plus, du fait de sa porosité, le dispositif conforme à l'invention peut assurer une fonction d'isolation, aussi bien de la chaleur que du froid.In addition, due to its porosity, the device according to the invention can provide an insulation function, both from heat and from cold.
Enfin, du fait que ce dispositif attire l'humidité pour la dissiper ensuite dans l'air, il respecte notamment la transpiration physiologique, contrairement aux traitements anti-sudoreaux locaux, lorsqu'il est utilisé comme semelle dans un article chaussant.Finally, because this device attracts moisture and then dissipates it into the air, it notably respects physiological perspiration, unlike local anti-sweat treatments, when it is used as a sole in a footwear item.
Des études cliniques ont démontré que l'utilisation du dispositif conforme à l'invention, sous forme d'une semelle dans des chaussures permet de résoudre avec satisfaction pratiquement tous les problèmes liés, soit à la transpiration dans des chaussures de sport pendant la pratique, soit à l'hyperidrose.Clinical studies have demonstrated that the use of the device according to the invention, in the form of a sole in shoes makes it possible to solve with satisfaction practically all the problems linked, that is to say perspiration in sports shoes during practice, either hyperidrosis.
En outre, le dispositif conforme à l'invention ne constitue aucun terrain favorable à des développements d'allergies, aucun composant allergisant n'entrant dans sa constitution.In addition, the device according to the invention does not constitute any terrain favorable to the development of allergies, no allergenic component entering into its constitution.
Enfin, le dispositif permet une régression de certains troubles trophiques, tels que les mycoses ou les eczémas, le facteur aggravant de ces troubles étant toujours une humidité permanente.Finally, the device allows a regression of certain trophic disorders, such as yeast infections or eczema, the aggravating factor of these disorders always being permanent humidity.
Grâce à l'invention, il est possible de réaliser un dispositif permettant d'absorber rapidement et efficacement une humidité importante et de désorber, également rapidement, ladite humidité, dès la disparition de la source humide.Thanks to the invention, it is possible to produce a device making it possible to quickly and efficiently absorb a large amount of moisture and to desorb, also quickly, said moisture, as soon as the wet source disappears.
Ce dispositif est plus particulièrement applicable sous forme de semelle pour chaussure ; semelle à insérer ou semelle première, mais est également applicable dans d'autres domaines, notamment domestiques, par exemple, pour l'absorption rapide de projections et pour une désorption correspondante, permettant une utilisation prolongée du moyen d'absoφtion et non un remplacement systématique de celui-ci avec les frais de lavage et de séchage correspondant. Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés au dessin annexé. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. This device is more particularly applicable in the form of a shoe sole; insole or insole, but is also applicable in other fields, in particular domestic, for example, for the rapid absorption of projections and for a corresponding desorption, allowing a prolonged use of the means of absorption and not a systematic replacement of it with the corresponding washing and drying costs. Of course, the invention is not limited to the embodiments described and shown in the accompanying drawing. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims

R E V EN D I C A T I O N S REV EN DICATIONS
1. Dispositif absorbant et désorbant caractérisé en ce qu'il est essentiellement constitué par au moins une membrane micro poreuse (1) à propriétés absorbantes et désorbantes, par au moins un revêtement perméable (2) et par au moins une sous-couche imperméable (3), essentiellement à cellules fermées.1. Absorbent and desorbent device characterized in that it is essentially constituted by at least one micro-porous membrane (1) with absorbent and desorbent properties, by at least one permeable coating (2) and by at least one impermeable sub-layer ( 3), essentially with closed cells.
2. Dispositif, suivant la revendication 1, caractérisé en ce que la membrane micro poreuse (1) à propriétés absorbantes et désorbantes est perméable à tous les fluides sur ses deux faces.2. Device according to claim 1, characterized in that the micro-porous membrane (1) with absorbent and desorbent properties is permeable to all fluids on its two faces.
3. Dispositif, suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que la membrane micro poreuse (1) à propriétés absorbantes et désorbantes est à base d'une polyoléfine micro poreuse du type polyéthylène à ultra haute densité chargée de silice.3. Device according to any one of claims 1 and 2, characterized in that the microporous membrane (1) with absorbent and desorbent properties is based on a microporous polyolefin of the ultrahigh density polyethylene type loaded with silica .
4. Dispositif, suivant la revendication 1, caractérisé en ce que la membrane micro poreuse à propriétés absorbantes et désorbantes (1) est pourvue de rainures formant des canaux d'évacuation de l'humidité.4. Device according to claim 1, characterized in that the micro-porous membrane with absorbent and desorbent properties (1) is provided with grooves forming channels for evacuating moisture.
5. Dispositif, suivant la revendication 1, caractérisé en ce que le revêtement poreux perméable (2) est constitué, soit sous forme d'un revêtement textile tissé, non tissé ou synthétique, et présentant de bonnes propriétés de séchage. 5. Device according to claim 1, characterized in that the porous permeable coating (2) consists, either in the form of a woven, non-woven or synthetic textile coating, and having good drying properties.
6. Dispositif, suivant la revendication 1, caractérisé en ce que le revêtement poreux perméable (2) est constitué par un tissu ou un non tissé de recouvrement capable d'assurer un transfert rapide des liquides vers la membrane absorbante (1) et à faible capacité d'absorption d'eau.6. Device according to claim 1, characterized in that the permeable porous coating (2) consists of a covering fabric or nonwoven capable of ensuring rapid transfer of liquids to the absorbent membrane (1) and at low water absorption capacity.
7. Dispositif, suivant la revendication 1, caractérisé en ce que la sous-couche imperméable (3) est percée de trous suffisamment grands et nombreux pour permettre l'évacuation de l'humidité par le dessous par évaporation.7. Device according to claim 1, characterized in that the waterproof sub-layer (3) is pierced with holes large enough and numerous to allow the evacuation of moisture from below by evaporation.
8. Dispositif, suivant la revendication 1, caractérisé en ce que la sous-couche micro poreuse imperméable (3) est constituée par une mousse perforée d'un copolymère éthylène / acétate de vinyle.8. Device according to claim 1, characterized in that the waterproof microporous sub-layer (3) consists of a perforated foam of an ethylene / vinyl acetate copolymer.
9. Dispositif suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que ses éléments constitutifs sont assemblés entre eux en un sandwich fonctionnel par couture ou par collage. 9. Device according to any one of claims 1 to 8, characterized in that its constituent elements are assembled together in a functional sandwich by sewing or by gluing.
10. Dispositif, suivant la revendication 9, caractérisé en ce que la couture est effectuée sur tout le pourtour du dispositif avec prévision de lignes de couture supplémentaires entre la couture de pourtour, suivant des diagonales et/ou des transversales et/ou des longitudinales. 10. Device according to claim 9, characterized in that the seam is carried out around the entire periphery of the device with provision of additional seam lines between the perimeter seam, along diagonals and / or transverse and / or longitudinal.
11. Dispositif, suivant la revendication 7, caractérisé en ce que le collage est effectué par collage par points ou par thermocollage par points au moyen d'un produit thermocollant (4) présentant une structure maillée et inteφosé, de part et d'autre de la membrane micro poreuse (1), respectivement entre le revêtement poreux (2) et la membrane micro poreuse (1) et entre cette membrane (1) et la sous-couche amortissante imperméable (3).11. Device according to claim 7, characterized in that the bonding is carried out by point bonding or by point heat bonding by means of a fusible product (4) having a mesh structure and inteφosé, on either side of the micro-porous membrane (1), respectively between the porous coating (2) and the micro-porous membrane (1) and between this membrane (1) and the waterproof damping underlayer (3).
12. Dispositif, suivant la revendication 11, caractérisé en ce que le produit thermocollant présente un maillage tel qu'il occupe une très faible partie de la surface totale de la membrane micro poreuse (1) et, de préférence, environ 12 % de cette surface.12. Device according to claim 11, characterized in that the fusible product has a mesh such that it occupies a very small part of the total surface of the micro-porous membrane (1) and, preferably, approximately 12% of this area.
13. Dispositif, suivant la revendication 1, caractérisé en ce qu'il se présente sous forme d'une semelle à insérer dans une chaussure ou sous forme d'une semelle intégrée de manière permanente dans une chaussure et constituant la première de montage ou semelle de propreté de la chaussure. 13. Device according to claim 1, characterized in that it is in the form of a sole to be inserted into a shoe or in the form of a sole permanently integrated in a shoe and constituting the first mounting or sole shoe cleanliness.
14. Dispositif, suivant la revendication 1, caractérisé en ce qu'il est pourvu, par revêtement, par pulvérisation ou autre, d'une ou de plusieurs couches d'agents anti-bactériens et/ou fongicides. 14. Device according to claim 1, characterized in that it is provided, by coating, by spraying or other, with one or more layers of anti-bacterial and / or fungicidal agents.
EP02732800A 2001-04-11 2002-04-10 Absorbent and desorbent device Expired - Lifetime EP1383403B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0104985A FR2823424B1 (en) 2001-04-11 2001-04-11 ABSORBENT AND DESORBENT DEVICE
FR0104985 2001-04-11
PCT/FR2002/001259 WO2002082937A1 (en) 2001-04-11 2002-04-10 Absorbent and desorbent device

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EP1383403A1 true EP1383403A1 (en) 2004-01-28
EP1383403B1 EP1383403B1 (en) 2005-11-23

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EP (1) EP1383403B1 (en)
JP (1) JP2004528086A (en)
CN (1) CN1251628C (en)
AT (1) ATE310409T1 (en)
DE (1) DE60207543T2 (en)
ES (1) ES2251593T3 (en)
FR (1) FR2823424B1 (en)
WO (1) WO2002082937A1 (en)

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JP2004528086A (en) 2004-09-16
DE60207543D1 (en) 2005-12-29
WO2002082937A1 (en) 2002-10-24
FR2823424B1 (en) 2004-10-08
CN1251628C (en) 2006-04-19
FR2823424A1 (en) 2002-10-18
CN1516558A (en) 2004-07-28
US20040168355A1 (en) 2004-09-02
DE60207543T2 (en) 2006-08-10
ES2251593T3 (en) 2006-05-01
EP1383403B1 (en) 2005-11-23
ATE310409T1 (en) 2005-12-15

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