EP4577076A1 - Articles chaussants imperméables à l'eau et perméables à la vapeur d'eau - Google Patents

Articles chaussants imperméables à l'eau et perméables à la vapeur d'eau

Info

Publication number
EP4577076A1
EP4577076A1 EP22792924.7A EP22792924A EP4577076A1 EP 4577076 A1 EP4577076 A1 EP 4577076A1 EP 22792924 A EP22792924 A EP 22792924A EP 4577076 A1 EP4577076 A1 EP 4577076A1
Authority
EP
European Patent Office
Prior art keywords
waterproof
spacer
water vapour
board
footwear article
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.)
Pending
Application number
EP22792924.7A
Other languages
German (de)
English (en)
Inventor
Andrea Giupponi
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.)
WL Gore and Associates SRL
Original Assignee
WL Gore and Associates SRL
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 WL Gore and Associates SRL filed Critical WL Gore and Associates SRL
Publication of EP4577076A1 publication Critical patent/EP4577076A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/12—Special watertight footwear
    • A43B7/125—Special watertight footwear provided with a vapour permeable member, e.g. a membrane
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A43B23/0205—Uppers; Boot legs characterised by the material
    • A43B23/0215—Plastics or artificial leather
    • A43B23/022—Plastics or artificial leather with waterproof breathable membranes

Definitions

  • the present invention relates to waterproof and water vapour permeable footwear articles and more particularly to waterproof and water vapour permeable footwear articles and a process for their manufacture.
  • the footwear articles reliably provide waterproofness during use.
  • boots worn by firemen have to withstand large amounts of water and mechanical stress. Water ingress may render boots cold, heavy and uncomfortable to wear and can then compromise the safety of the wearer. Heavy boots can prevent the wearer from moving quickly while an uncomfortable feeling will distract the attention from the surroundings.
  • the window board may be in the shape of a footprint.
  • the window board may have one or more openings in the centre of the window board.
  • the spacer material is located on the surface of the window board that is facing the inside of the waterproof and water vapour permeable footwear article.
  • the spacer material may be attached to the window board with adhesive.
  • the spacer material comprises channels.
  • the spacer material may comprise a fibrous network with interconnected channels.
  • the window board may be smaller than the circumference of the opening at the bottom end of the upper.
  • the spacer may be attached to the upper with adhesive or with a seam.
  • the waterproof and water vapor permeable footwear article may further comprise a liner.
  • the liner may comprise at least a lining textile.
  • the liner may comprise at least a lining textile and a waterproof and water vapour permeable membrane.
  • the liner may comprise a waterproof and water vapour permeable membrane sandwiched between two liner textiles. Together with a nonwoven the liner may form a bootie. The bottom end of the liner may extend beyond the bottom end of the upper.
  • the spacer can be any one of the spacer described herein in relation to the waterproof and water vapor permeable footwear article.
  • Figure 2 shows a cross section of a waterproof and water vapour permeable footwear article comprising a liner and a frame board.
  • Figure 5 shows a cross section of a waterproof and water vapour permeable footwear article comprising a spacer tape.
  • Figure 7 shows the toe area of a waterproof and water vapour permeable footwear article comprising window stuck board, a spacer material and a liner.
  • Figure 8 shows a frame board.
  • waterproof and water vapour permeable footwear article refers to outer coverings for feet such as shoes, boots, sandals, trainers, sneakers and the like.
  • the present invention relates to a waterproof and water vapour permeable footwear article comprising an upper, an insole, a spacer and a sole.
  • Textile fabrics may comprise filaments, such a monofilaments, or fibres, or any mixtures thereof.
  • Fibres include natural and synthetic fibres and any mixtures thereof.
  • Natural fibres include cellulosic types such as cotton, hemp or linen; animal fibres such as silk, angora, sheep’s wool, alpaca, cashmere, mohair and any combination thereof.
  • Synthetic fibres include fibres based on acrylic polymers, polyesters, polyolefins, polyurethanes, polyamides and any combination thereof.
  • the textile fabrics may be knit fabrics, woven fabrics, or nonwoven fabrics.
  • the fabrics may stretch.
  • the stretchiness may be due to the use of stretchable yarns or fibres, made for example from elastomers.
  • the stretchiness may be due to the way the yarns or fibres are knitted or woven.
  • Warp knitting is a method of fabric forming in which the loops are made in a vertical way along the length of the fabric from each warp yarn or monofilament, and intermeshing of loops takes place in a lengthwise direction.
  • the wales and courses run parallel.
  • One yarn or monofilament is required for each wale, thus numerous ends of yarns or monofilaments are being fed simultaneously to individual needles placed in a lateral direction.
  • “Woven” refers to a fabric or textile formed by weaving. Weaving is a process of fabric forming by the interlacement of warp and weft yarns. Both warp and weft yarns run essentially straight and parallel to each other, either lengthwise (warp) or crosswise (weft).
  • the upper may be a laminate comprising four layers.
  • An outermost layer of this laminate may be made of microfibres. This outermost layer may be laminated to a nonwoven layer. On the surface opposite to the microfibre layer the nonwoven layer may be laminated to a waterproof and water vapour permeable membrane.
  • a textile layer may be laminated on the surface of the waterproof and water vapour permeable membrane that is opposite from the nonwoven layer. This layer is facing the inside of the footwear in the upper.
  • This layer may be an open mesh material such as a knit. The open mesh structure allows for the sole material to penetrate through the textile layer onto the waterproof and water vapour permeable membrane.
  • the microfibres are made from polyamide or polyurethane.
  • the nonwoven layer is made from polyester or polyamide, for example nylon.
  • the boot vapour permeability test shall be designed to indicate the Moisture Vapor Transmission Rate (MVTR) through the test sample by means of a difference in concentration of moisture vapor between the interior and the exterior environment.
  • MVTR Moisture Vapor Transmission Rate
  • Procedure a) Place sample in test environment and condition for at least 12 hours. b) The heating device is inserted into the water holding bag and the complete assembly is then placed into the test sample opening and filled with water to a height of 5 cm measured from inside sole. c) Seal opening around the collar with plastic wrap around the top of the footwear and tape over using packaging tape. d) Heat water in test sample to 35 °C. e) Weigh test sample and record as Wi. f) Hold temperature in test sample after weighing for a minimum of 4 hours. g) After a minimum of 4 hours, reweigh test sample. Record weight as Wf and test duration as Td. h) Calculate MVTR of the test sample in grams/hour from the equation below: i) MVTR (Wi - Wf)/Td.
  • Water vapor passes through the waterproof and water vapour permeable membrane into the cup, whose weight increase is then determined.
  • the waterproof and water vapour permeable membrane is considered water vapor permeable or breathable if the water vapor permeability is greater than or equal to 0.01 g/(Pa m 2 h). If the required size of the sample cannot be obtained, a smaller sample may be used for the measurement using a smaller cup containing half the amount of potassium acetate specified in the Norm, i.e. 50g instead of 100g and mixed with 15.6g of water.
  • the terms water vapor permeability and breathability are used interchangeably herein.
  • the waterproof and water vapour permeable membrane may comprise at least one of expanded polytetrafluorethylene (ePTFE), expanded polyethylene, expanded polypropylene, expanded polyolefins, polyurethane, polyester and copolyether ester, polyether, expanded polyether , polyamide , copolyether amides and polyacrylate, and composites or multilayer laminates thereof.
  • ePTFE expanded polytetrafluorethylene
  • the waterproof and water vapour permeable membrane may be made of a fluoropolymer, particularly made of microporous expanded polytetrafluorethylene (ePTFE).
  • the waterproof and water vapour permeable membrane may be present in the total length of the upper.
  • the waterproof and water vapour permeable membrane may only be present in the area of the upper that surrounds the foot of the wearer, for example from the bottom of the foot to the area that surrounds the ankle of the wearer but not further.
  • the channels in the spacer are adapted to allow the injected sole polymer to flow from the position of injection towards, for example, the perimeter of the upper.
  • the channels in the spacer may allow for the injectable polymer of the sole to flow during injection of the sole towards the waterproof and water vapour permeable membrane of the upper, and optionally towards the waterproof and water vapor permeable membrane of the liner, thus sealing the waterproof and water vapour permeable footwear article against water ingress.
  • the term “channel” is used to describe a passage or duct allowing the injectable polymer of the sole assembly to flow through.
  • the channels may have an entry for the injectable polymer and an exit.
  • the channels provide a lumen through which the injectable polymer may flow during injection.
  • There may be openings in the perimeter of the channels allowing the injectable polymer to flow towards the waterproof and water vapor permeable membranes of the upper and/or the liner.
  • the channels in the spacer may extend horizontally in the finished footwear article.
  • the channels in the spacer may extend vertically in the finished footwear article.
  • the injected sole polymer is waterproof the waterproof and water vapour permeable footwear article is sealed against water ingress.
  • the area between the waterproof and water vapour permeable membrane of the upper and the waterproof sole is durably sealed to render the footwear article waterproof.
  • the channels may comprise an opening in their circumference.
  • the channel may be in the form of a groove.
  • the channels may be formed between raised portions of the spacer material.
  • the raised portions may at least have a thickness of at least 1.5 mm, preferably at least 3 mm.
  • the channels may have a diameter of at least 1.5 mm, preferably at least 3 mm.
  • the channels may be grooves or spaces between the raised portions of the spacer material and may have any suitable geometry such as for example a square, rectangular, triangular, elliptic or round diameter.
  • the channels may be formed from a three-dimensional wave pattern where the channel is formed by the space between a trough and the 2 crests on either side along the length of the spacer material.
  • the channels may be formed in a spacer material that is used in combination with a window board or a window stuck board.
  • the spacer material comprises a fabric of intertwined fibres providing channels to allow for the injected polymer to enter and flow through the channels formed between the fibres of the fabric.
  • the channels may have a diameter of at least 1.5 mm, preferably at least 3 mm.
  • the spacer material may be made from polymer materials comprising polyvinyl chloride (PVC), ethylene-vinyl acetate (EVA), polyurethane (PU), synthetic rubber (TR) or natural fibres as further discussed above.
  • the spacer material may be a nonwoven.
  • the spacer material may be leather.
  • the spacer material may have a thickness of at least 1 mm to allow for the sole material to penetrate and flow through the channels of the spacer material.
  • the spacer material may be a spacer tape.
  • the spacer tape may be provided as a ribbon comprising a plurality of channels perpendicular to the length of the ribbon.
  • the spacer tape may be a tape comprising the above mentioned channels spanning the width or a portion of the width of the tape.
  • the spacer tape may comprise a portion without channels which may extend in the longitudinal direction of the tape. This portion may be used for attachment of the spacer tape within the footwear article.
  • This portion of the spacer tape not comprising channels may have a smaller thickness than the rest of the spacer tape to facilitate attachment for example by a Strobel seam.
  • the spacer tape may be made from a sufficiently bendable material that is capable of conforming to the contour of the footwear article.
  • the spacer tape may be cut into the appropriate length to conform to a portion of or the whole circumference of the footwear article.
  • the spacer tape may be used in at least a portion of the waterproof and water vapor permeable footwear article, for example in the middle foot and/or the heel portion of the footwear article.
  • the spacer tape may be used in the middle foot and heel portion of the waterproof and water vapour permeable footwear article while a different spacer is used in the toe portion of the waterproof and water vapor permeable footwear article.
  • the waterproof and water vapour permeable footwear article may comprise a spacer tape in the middle foot and heel portion of the waterproof and water vapour permeable footwear article and a stuck board or window stuck board may be used in the toe region of the waterproof and water vapor permeable footwear article as spacer.
  • the waterproof and water vapour permeable footwear article may comprise a frame board as the spacer.
  • the frame board may comprise the shape of a footprint.
  • the frame board may be a frame in the form of a footprint with a large opening in the centre of the frame board.
  • the sole polymer may be injected through this opening.
  • the frame board may comprise the channels which are oriented such that the lumen of the channels traverses the frame in a direction from the inside to the outside, for example, across the width of the frame.
  • the sole polymer enters the channels and flows across the frame towards the waterproof and water vapour permeable membrane of the upper and/or the liner.
  • the frame board may further comprise a flat and/or raised portion for attachment to the upper.
  • the frame board comprises in addition to the channels openings in the frame to optimise the flow of the injected sole polymer.
  • the openings may have different sizes and/or different geometries such as circles, squares, triangles, ellipses and the like.
  • the spacer may further be a stuck board.
  • a stuck board may be the toe portion of a frame board. The positioning of the channels and/or further openings in the frame board apply to the stuck board as well.
  • the stuck board may not comprise a central opening.
  • the stuck board may be shaped as a front portion of a footprint that has been cut off in the middle foot area.
  • the channels may be arranged such that their lumens extend from the cut line towards the outer rim of the stuck board.
  • the stuck board may comprise a raised portion around the outer rim for attachment to the insole, the liner and/or the upper.
  • the stuck board may be glued to the insole, liner and/or upper with adhesive.
  • the insole may be a net board.
  • the spacer may be a window board with a spacer material.
  • the window board may be in the shape of a footprint.
  • the window board may comprise at least one opening.
  • the sole polymer may be injected through the at least one opening.
  • the window board may be flat.
  • the spacer material may be attached to the window board.
  • the spacer material may be glued to the window board.
  • the spacer material may be sewn to the window board.
  • the spacer material may cover the at least one opening of the window board.
  • the spacer material may only cover the window board but not the at least one opening.
  • the spacer may be a window stuck board with a spacer material.
  • the window stuck board has the same outline as the stuck board.
  • the window stuck board may not have any raised portions.
  • the window stuck board may have at least one opening.
  • the window stuck board comprises a spacer material as described above.
  • the spacer material may be attached to the window stuck board.
  • the spacer material may be sewn to the window stuck board.
  • the spacer material may be attached to the window stuck board with adhesive.
  • the spacer material may cover the at least one opening.
  • the spacer material may only cover the window stuck board but not the at least one opening.
  • the spacer may be attached to the upper at the bottom end of the inside facing surface of the upper.
  • the spacer may be attached to the upper with adhesive.
  • the spacer may be sewn to the upper.
  • the spacer may be located between the bottom ends of the waterproof and water vapour permeable membranes of the upper and the liner.
  • the waterproof and water vapor permeable footwear article may comprise different spacers in the toe area of the waterproof and water vapour permeable footwear article than the rest of the waterproof and water vapor permeable footwear article, for example the middle foot portion and/or the heel portion.
  • the waterproof and water vapour permeable footwear article may further comprise a liner.
  • the liner may be located on the inside of the upper.
  • the liner may comprise at least one textile layer or a mesh material.
  • the liner may comprise at least one textile layer and a waterproof and water vapour permeable membrane.
  • the liner may be a laminate comprising a waterproof and water vapour permeable membrane sandwiched between two textile layers.
  • the liner may be in the form of a bootie.
  • the liner may form a bootie only in the toe area.
  • the bootie may comprise a different material than at the sides of the bootie.
  • the liner may be reinforced with a different material. If the material at the bottom of the bootie is different from the material on the sides of the bootie the different materials may be sewn together.
  • the bottom of the bootie may be made from a nonwoven board.
  • the liner When the liner is open at the bottom and comprises a waterproof and water vapour permeable membrane, the waterproof and water vapour permeable membrane faces the spacer.
  • any textile layer located between the waterproof and water vapour permeable membrane and the spacer In order for the injected sole polymer to reach the waterproof and water vapour permeable membrane of the liner, any textile layer located between the waterproof and water vapour permeable membrane and the spacer must have an open textile structure or open mesh structure as described for the upper as well.
  • the bottom end of the liner may extend beyond the bottom end of the upper.
  • the insole may be made of any suitable material such as for example bonded leather, synthetic fabrics, thermoplastic polymers, fibreboard or rubber.
  • the insole may be a lasting board, a strobel board, a net board or a toe lasting board.
  • a lasting board may have a higher stiffness and hardness than a strobel board.
  • a strobel board is typically a textile material to enable stitching of the spacer and/or the liner to the strobel board.
  • a toe lasting board is a lasting board with smaller dimensions to allow for sealing of the bootie between the toe lasting board and the seam sewing of the strobel board to the bootie.
  • Typical lasting adhesives such as hotmelt or pressure sensitive adhesives can be used, for example co-polyester or polyamide hotmelt adhesives or polyurethane.
  • a protective toe cap When a protective toe cap is used as a safety toe cap this safety toe cap extends to the edge of the lasting board and potentially not enough injected sole material would be able to penetrate through the spacer onto the waterproof and water vapour permeable membrane of the upper to seal the footwear article.
  • a lasting board comprising a window and a spacer material can be used as insole.
  • a spacer material Around the window a spacer material may be attached on the upper surface of the insole facing the underside of the foot of the wearer.
  • the spacer material may have raised edges around the window with channels for the injected sole material to flow through towards the waterproof and water vapour permeable membrane.
  • it may be a mesh.
  • the mesh may be glued over the window.
  • the spacer material preferably has a thickness of at least 2 mm.
  • the sole may be made from a polymeric material such as polyurethane, thermoplastic polyurethane (TPU) or ethylene vinyl acetate (EVA) and injected over the bottom of the footwear construction that is assembled on a last.
  • a polymeric material such as polyurethane, thermoplastic polyurethane (TPU) or ethylene vinyl acetate (EVA)
  • a footbed may be placed into the waterproof and water vapor permeable footwear article.
  • the footbed may be made from material that cushions the foot of the wearer and provides a better fit and further thermal insulation.
  • the footbed may comprise two layers of material.
  • the bottom layer facing the sole may be made from for example polyurethane (PU) foam, ethylene-vinyl acetate (EVA), ad/or polyethylene (PE) foams.
  • the upper layer facing the foot of the wearer may be made from any of the materials disclosed for the liner.
  • the footbed may be removable and not be attached to the insole and/or liner.
  • Figure 1 shows a waterproof and water vapour permeable footwear article 10 comprising an upper 40, an insole 50 and a sole 90.
  • a frame board 60 is glued to the underside of the insole 50 with adhesive 80.
  • the frame board 60 could also be manufactured one-piece with the insole 50.
  • the upper 40 comprises at least an outer material 20 and a waterproof and water vapour permeable membrane 30.
  • On the surface of the waterproof and water vapour permeable membrane 30 that faces the inside of the footwear article 10 a further open textile layer or open mesh layer be laminated (not shown).
  • the bottom end of the upper 40 is glued to the frame board 60 with lasting adhesive 70.
  • the sole polymer When the sole polymer is injected to mould the sole 90, the sole polymer will flow through the central opening of the frame board 60.
  • the frame board 60 On the surface facing the sole 90 the frame board 60 comprises channels directing the sole polymer from the central opening of the frame board 60 towards the outside of the footwear article. The polymer entering these channels will be in contact with the waterproof and water vapour permeable membrane 30 of the upper 40 and form a waterproof bond.
  • the channels are located in a raised portion around the central opening of the frame board 60 and injection of the sole polymer creates a sealing ring around the bottom of the footwear article 10 durably waterproofing the footwear article 10.
  • FIG. 2 An alternative embodiment is shown in Figure 2.
  • the embodiment of Figure 2 is double lasted allowing for sealing of two waterproof and water vapour permeable membranes at once.
  • the upper 40 comprises an outer material 20 and a waterproof and water vapour permeable membrane 30.
  • the waterproof and water vapour permeable footwear article 10 further comprises a liner 110.
  • the liner 110 is a laminate of at least a lining textile 100 and a waterproof and water vapour permeable membrane 30.
  • the liner 110 may be a laminate comprising a waterproof and water vapour permeable membrane 30 sandwiched between two lining textiles 100 (not shown).
  • the lining 110 is attached to the underside of the insole 50 with lasting adhesive 70.
  • the lasting adhesive may be applied discontinuously so that the injected sole material can enter between the lining an the insole.
  • a frame board 60 is atached to the outward facing surface of the liner 110 with adhesive 80.
  • the adhesive must be compatible with the sole material, i.e. the adhesive and the sol material merge.
  • the adhesive may be applied in dots so that the sole material can flow around the adhesive dots towards the waterproof and water vapor permeable membrane of the liner.
  • the frame board comprises raised portions around the inner perimeter which are intersected by channels.
  • the upper 40 is lasted to the frame board 60 and atached with lasting adhesive 70.
  • the perimeter edge of the liner 110 may extend beyond the frame board 60 and the upper 40. If desired, a protective toe cap can be inserted between the liner 110 and the upper 40 (not shown).
  • the sole polymer When the sole polymer is injected to mould the sole 90, the sole polymer will seal the perimeter edge of the liner 110 and in particular provide a seal with the waterproof and water vapour permeable membrane 30 of the liner 110 when the liner 110 extends beyond the upper 40 and the frame board 60. Further, the sole polymer will flow through the central opening of the frame board 60 and then through the channels towards the waterproof and water vapour permeable membrane 30 of the upper 40. A sealing ring is created around the botom of the footwear article 10 rendering the connection between the upper 40 and the sole 90 waterproof.
  • Figure 3 depicts an embodiment of a waterproof and water vapour permeable footwear article 10 comprising a liner 110, an upper 40, an insole 50 and a sole 90.
  • the waterproof and water vapour permeable footwear article 10 of Figure 3 comprises a strobel board as insole 50 and the botom end of the liner 110 is sewn to the strobel board 50 to form a bootie.
  • the waterproof and water vapour permeable footwear article 10 of Figure 4 differs from the embodiment of Figure 3 in that as a spacer a windows board 150 and a spacer material 140 are used instead of a frame board that comprises channels on the frame.
  • a spacer a windows board 150 and a spacer material 140 are used instead of a frame board that comprises channels on the frame.
  • the sole polymer When the sole polymer is injected to mould the sole the sole the sole polymer enters through the openings in the windows board 150 and flows through the spacer material 140. Because of the three-dimensional structure of the spacer 140 the injected sole polymer can make contact with the waterproof and water vapour permeable membranes 30 of both the upper 40 and the liner 110.
  • a waterproof seal is provided underneath the foot of the wearer of the waterproof and water vapor permeable footwear article 10 where the upper 40 is lasted to the bootie.
  • the spacer tape 160 will guide the injected sole polymer to the waterproof and water vapour permeable membrane 30 of both the upper 40 and the liner 110 in the heel and middle foot area and via the vertical channels of the spacer tape 160.
  • the injected sole polymer is guided by the channels of the stuck board 190 towards the waterproof and water vapour permeable membrane 30 of both the liner 110 and the upper 40.
  • Figure 8 shows a frame board 60 which has an opening in the centre of the frame board 60 with the frame in the form of a footprint around the opening.
  • the raised portions are located towards the middle of the width of the frame allowing for space along the outer rim for attaching the waterproof and water vapour permeable membrane of the upper.
  • the raised portions 270 have been moved towards the inner rim of the frame with additional openings 250 added to the frame to increase the flow of the sole polymer during injection.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

La présente application concerne un article chaussant imperméable à l'eau et perméable à la vapeur d'eau comprenant une tige, une semelle intérieure, un espaceur et une semelle ; la tige comprenant un matériau externe, une membrane imperméable à l'eau et perméable à la vapeur d'eau stratifiée sur la surface tournée vers l'intérieur du matériau externe, l'espaceur comprenant une structure de canal ; le matériau de l'espaceur étant fixé à la surface tournée vers l'intérieur de la tige et la semelle étant une semelle injectée. L'invention concerne en outre un procédé de fabrication d'un tel article chaussant.
EP22792924.7A 2022-08-22 2022-08-22 Articles chaussants imperméables à l'eau et perméables à la vapeur d'eau Pending EP4577076A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2022/000044 WO2024042556A1 (fr) 2022-08-22 2022-08-22 Articles chaussants imperméables à l'eau et perméables à la vapeur d'eau

Publications (1)

Publication Number Publication Date
EP4577076A1 true EP4577076A1 (fr) 2025-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22792924.7A Pending EP4577076A1 (fr) 2022-08-22 2022-08-22 Articles chaussants imperméables à l'eau et perméables à la vapeur d'eau

Country Status (5)

Country Link
EP (1) EP4577076A1 (fr)
JP (1) JP2025526977A (fr)
KR (1) KR20250050104A (fr)
CN (1) CN119789799A (fr)
WO (1) WO2024042556A1 (fr)

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