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)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8862243

Family Applications (1)

Country Status (9)

Families Citing this family (19)

Family Cites Families (18)

• 2001
  • 2001-04-11 FR FR0104985A patent/FR2823424B1/fr not_active Expired - Fee Related
• 2002
  • 2002-04-10 AT AT02732800T patent/ATE310409T1/de not_active IP Right Cessation
  • 2002-04-10 US US10/474,682 patent/US20040168355A1/en not_active Abandoned
  • 2002-04-10 CN CN02809990.7A patent/CN1251628C/zh not_active Expired - Fee Related
  • 2002-04-10 DE DE60207543T patent/DE60207543T2/de not_active Withdrawn - After Issue
  • 2002-04-10 EP EP02732800A patent/EP1383403B1/de not_active Expired - Lifetime
  • 2002-04-10 WO PCT/FR2002/001259 patent/WO2002082937A1/fr not_active Ceased
  • 2002-04-10 ES ES02732800T patent/ES2251593T3/es not_active Expired - Lifetime
  • 2002-04-10 JP JP2002580752A patent/JP2004528086A/ja active Pending

Non-Patent Citations (1)

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