EP4233623A2 - Verfahren zur dauerhaften wasserabdichtung von schuhwerk - Google Patents

Verfahren zur dauerhaften wasserabdichtung von schuhwerk Download PDF

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Publication number
EP4233623A2
EP4233623A2 EP23177674.1A EP23177674A EP4233623A2 EP 4233623 A2 EP4233623 A2 EP 4233623A2 EP 23177674 A EP23177674 A EP 23177674A EP 4233623 A2 EP4233623 A2 EP 4233623A2
Authority
EP
European Patent Office
Prior art keywords
waterproof
footwear
bootie
breathable
breathable bootie
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
EP23177674.1A
Other languages
English (en)
French (fr)
Other versions
EP4233623A3 (de
Inventor
Jens Heidenfelder
Amr Mahmoud Hamdy KOBAISY ALI
Stefan Hauer
Maximilian Muth
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 GmbH
Original Assignee
WL Gore and Associates GmbH
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 GmbH filed Critical WL Gore and Associates GmbH
Priority to EP23177674.1A priority Critical patent/EP4233623A3/de
Publication of EP4233623A2 publication Critical patent/EP4233623A2/de
Publication of EP4233623A3 publication Critical patent/EP4233623A3/de
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/08—Devices for stretching special parts of shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B19/00—Shoe-shaped inserts; Inserts covering the instep
    • 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
    • A43B23/0235—Different layers of different material
    • 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
    • A43B23/0245—Uppers; Boot legs characterised by the constructive form
    • A43B23/026—Laminated layers
    • 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
    • A43B23/04—Uppers made of one piece; Uppers with inserted gussets
    • A43B23/042—Uppers made of one piece
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/07—Linings therefor
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0405—Linings, paddings or insertions; Inner boots
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/02—Lasts for making or repairing shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/02—Lasts for making or repairing shoes
    • A43D3/024—Lasts with a fore part and heel section relatively slideable to one another along an inclined line of cut
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/02—Lasts for making or repairing shoes
    • A43D3/025—Longitudinally expansible lasts

Definitions

  • the waterproof version may be reached, towards the end of the manufacturing process, by carrying out the method steps of the method for permanently waterproofing footwear according to exemplary embodiments of the invention. In this way, manufacturing efficiency may be greatly increased. It is also possible to locally decouple the waterproofing from the previous manufacturing steps.
  • the method of permanently waterproofing footwear, as described herein may be carried out in a second facility, while the previous manufacturing steps are carried out in a first facility.
  • a well-defined intermediate product which may be a fully assembled non-waterproof footwear, may be handed from the first facility to the second facility, which in turn may help in the quality control in the first facility.
  • the waterproof, breathable bootie is inserted into the inner space of the footwear, after the inner space of the footwear has been closed.
  • the waterproof, breathable bootie is inserted into the bag-like structure that forms a bag around the wearer's foot in use.
  • the waterproof, breathable bootie is inserted into the foot surrounding structure, when it already exists as a foot surrounding structure, i.e. when a closed inner space already exists.
  • the waterproof, breathable bootie may be inserted into the inner space, after the foot surrounding structure has been created around a last and after the last has been taken out of the foot surrounding structure. It is understood that the bag-like structure of the footwear, into which the waterproof, breathable bootie is inserted, has a foot insertion opening at the collar of the footwear.
  • bootie refers to a sock-like structure that encases the foot of the wearer, when inserted into the footwear.
  • the bootie is arranged in the inner space of the footwear.
  • the bootie may also extend out of the inner space of the footwear at the collar thereof. In other words, the bootie may extend upwards from an outer construction of the upper assembly of the footwear.
  • the bootie has a waterproof, breathable laminate construction. In this way, the bootie provides a waterproof and breathable sock-like structure all around the wearer's foot. This waterproof and breathable bootie construction allows for the discharge of water vapor from the wearer's foot through the bootie and to the outside of the footwear via the upper assembly and/or the sole.
  • the bootie When inserted into the inner space formed by the upper assembly, the bootie is arranged underneath and towards the inside of an outer construction of the upper assembly and upwards of a sole-side portion of the upper assembly.
  • outer construction generally refers to that part of the footwear that is seen from the outside of the footwear on top of the sole, when the footwear is in a finished state. It also includes the non-visible extensions of these materials, e.g. a lasted upper material.
  • the outer construction further includes additional structures above and to the sides of the foot, even if they are not visible from the outside, e.g. a hidden tongue.
  • sole-side portion of the upper assembly refers to that portion of the upper assembly that is arranged between the wearer's foot and the sole of the footwear.
  • the adhesive tape runs around the entire circumference of the bootie. In this way, the attachment between the bootie and the upper assembly is provided all around the foot insertion portion. The stepping into the footwear is particularly convenient for the user.
  • the width of the adhesive tape may be up to 50% of the height from the sole portion of the inner space to the collar of the footwear, in particular between 5% and 50%, further in particular between 10% and 20%, of the height from the sole portion of the inner space to the collar of the footwear.
  • the adhesive tape is at least one of sewn, glued, welded, sprayed, and printed to the waterproof, breathable bootie.
  • the adhesive tape may be an originally separate structure that is attached to the bootie, in particular to the waterproof, breathable laminate construction.
  • the adhesive tape may also be integrated into the waterproof, breathable laminate construction, such as via integrating an activatable, adhesive material therein.
  • Providing the waterproof, breathable bootie may refer to providing a waterproof, breathable bootie that already has the adhesive tape attached thereto or integrated therein. It is also possible that the step of providing the waterproof, breathable bootie comprises the step of sewing and/or gluing and/or welding and/or spraying and/or printing the adhesive tape to the waterproof, breathable bootie.
  • the adhesive tape comprises heat activated adhesive and the step of adhering the adhesive tape to the donning region of the footwear comprises heating the adhesive tape.
  • the attaching of the bootie to the upper assembly may be related to well-defined heating conditions, allowing for reproducible, high-quality attachments throughout a production lot.
  • the term heat activated adhesive refers to the inherent capacity of being activated by heat. It does not mean that the adhesive is in a state of being activated. The heat activated adhesive is brought into an activated state by heating the adhesive tape.
  • the heat activated adhesive may be thermoplastic glue, such as thermoplastic polyurethane. Any other suitable heat activated adhesive is possible as well.
  • heating the adhesive tape is carried out after inserting the waterproof, breathable bootie into the inner space or before and after inserting the waterproof, breathable bootie into the inner space.
  • the waterproof, breathable bootie and the adhesive tape are substantially at room temperature, when inserted into the inner space, and are heated thereafter.
  • the adhesive tape is pre-heated before insertion, such that the activation of the adhesive tape is carried out particularly quickly after insertion.
  • the attaching of the waterproof, breathable bootie to the footwear in the donning region of the footwear comprises sewing the waterproof, breathable bootie in a collar region thereof to the donning region of the footwear.
  • the bootie may be sewn to the donning region of the footwear around the entire circumference of the bootie.
  • the attaching of the waterproof, breathable bootie to the footwear in at least one further attachment region of the footwear comprises attaching, in particular adhering, the waterproof, breathable bootie to the footwear in at least one of a toe region of the footwear, a heel region of the footwear, and a sole region of the footwear.
  • the step of permanently fixing the waterproof, breathable bootie in position in the inner space of the footwear comprises leaving the waterproof, breathable bootie un-attached in a mid-foot portion of the footwear.
  • This mid-foot portion may extend along at least 50%, in particular along at least 60%, of the extension from the tip of the waterproof, breathable bootie to the rear of the waterproof, breathable bootie. Further, the mid-foot portion is between the toe portion and the heel portion of the waterproof, breathable bootie. Leaving the waterproof, breathable bootie un-attached to the surrounding structure in the mid-foot portion of the footwear provides a particularly high amount of flexibility for the user's foot and a high level of wearing comfort.
  • the waterproof, breathable bootie may be un-attached on the upper assembly side of the mid-foot portion of the bootie or both on the upper assembly side and the sole side of the bootie.
  • the waterproof, breathable bootie comprises at least one further bootie-side adhesive patch outside of the toe region and the heel region of the waterproof, breathable bootie.
  • the step of permanently fixing the waterproof, breathable bootie in the inner space of the footwear comprises adhering the waterproof, breathable bootie to the footwear substantially all around its outer surface.
  • the waterproof, breathable bootie may comprise adhesive substantially all around its outer surface.
  • the adhesive may be applied in an adhesive pattern, such as a grid pattern or dot pattern. It is also possible that the adhesive is an inherently breathable adhesive.
  • the materials of the bootie, sole and upper assembly, and the accessibility of the toe and heel regions may be preferable.
  • one of the alternatives may provide for better attachment between the bootie and the remainder of the footwear. It is pointed out that it is also possible to combine one or more bootie-side adhesive patches with one or more footwear-side adhesive patches.
  • the last is expandable and the step of permanently fixing the waterproof, breathable bootie in position in the inner space comprises expanding the last within the inner space.
  • the expandable last helps in manoeuvring the bootie along the inner space with a low risk of the adhesive getting stuck in the wrong positions.
  • the last is heatable and the step of permanently fixing the waterproof, breathable bootie in position in the inner space comprises heating the last, when inserted into the inner space.
  • the last may perform multiple functions, namely aiding in the insertion of the bootie, exerting pressure onto the bootie against the footwear, and activating heat activated adhesive.
  • the last may act as a multi-function tool, helping to quickly and reliably carry out the method steps of the method in accordance with exemplary embodiments of the invention.
  • the waterproof, breathable bootie is at least partly elastic.
  • Providing an at least partly elastic waterproof, breathable bootie may help in positioning the bootie with respect to the footwear in a particularly accurate manner.
  • the last may be easily inserted into the bootie due to the elasticity thereof.
  • the elasticity may be beneficial for the user's comfort, because the bootie may adapt to the user's foot's shape.
  • the waterproof, breathable bootie is elastic at least in a top portion thereof, in particular at least in a top portion that extends along at least 40%, in particular along at least 50%, of the circumference of the waterproof, breathable bootie.
  • the elasticity in the top portion, in particular in the instep portion of the foot, may enhance the comfort for the user to an even higher degree.
  • the waterproof, breathable bootie has elasticity in a circumferential direction and/or in a longitudinal direction of the waterproof, breathable bootie.
  • the waterproof, breathable bootie may have elasticity both in the circumferential direction and the longitudinal direction of the waterproof, breathable bootie. This set-up may also be referred to as biaxial stability.
  • the waterproof, breathable bootie may have elasticity in a circumferential direction.
  • the bootie when the wearer inserts a foot into the footwear, the bootie may be able to stretch and to expand elastically in order to make room for the foot of the wearer.
  • the bootie conforms to the foot of the wearer, it is therefore also referred to as a conformable bootie.
  • the bootie being elastic means that it exerts a force against the wearer's foot upon insertion thereof.
  • the elasticity builds up a force that forces the bootie towards its shape before insertion of the wearer's foot. This force provides for a recovery of the bootie towards its previous shape after exertion of the wearer's foot.
  • the elastic nature of the bootie may be achieved in any suitable way. Particular examples of producing elastic laminates are given in WO 95/32093 A1 , the contents of which is incorporated herein by reference in its entirety.
  • the bootie has a longitudinal elasticity of at least 0.5 N/cm at 10% elongation in the longitudinal direction of the bootie. In this way, a minimum amount of pressure for stability and a conformable fit may be achieved.
  • the elasticity of the bootie may for example be regulated by using textiles for the at least one textile layer that have the desired retractive force.
  • the waterproof, breathable laminate construction comprises a one-piece functional layer and at least one textile layer.
  • the one-piece functional layer and the at least one textile layer may be substantially co-extensive.
  • the term at least one textile layer intends to state that the one-piece functional layer may be provided with a textile layer on one side thereof or with a textile layer on each side thereof, i.e. with two textile layers. It is also possible that more than one textile layer is provided on one side or on both sides.
  • each textile layer may be made up of multiple textile pieces.
  • the waterproof, breathable laminate construction may comprise a one-piece functional layer and one textile layer on one side of the functional layer, with the one textile layer being made up of multiple textile pieces that are sewn together.
  • the one-piece functional layer may be provided with one or more textile layers that are made up from originally separate textile pieces.
  • the functional layer may be a one-piece structure.
  • the waterproof, breathable laminate construction is then also considered a one-piece structure. This is irrespective of whether the textile layer is made of originally separate textile pieces or not. In case the textile layer is made of originally separate textile pieces, a one-piece laminate structure is present, at least at the point where the laminate is formed from the one-piece functional layer and the multiple textile pieces.
  • the bootie is made from one continuous waterproof, breathable laminate and is also considered a one-piece structure.
  • the bootie is made from a continuous waterproof, breathable laminate, which may be shaped to inherently have the form of a bootie or which may be cut, folded and sewn or glued together to form a bootie.
  • a substantially flat waterproof, breathable laminate is provided, for example having a one-piece functional layer and a textile layer on one side, potentially made from originally separate textile pieces.
  • the laminate is cut in such a shape that, upon folding the laminate, a sock-like shape is formed.
  • the edges of the laminate are then sewn or glued together, such that the sock-like shape is retained.
  • the waterproof, breathable laminate construction may be made with a two-layer laminate consisting of the functional layer and a textile layer.
  • the waterproof, breathable laminate construction may also be made with a three-layer laminate, with the functional layer being sandwiched between a fist textile layer and a second textile layer on opposite sides of the functional layer.
  • the waterproof, breathable laminate construction may also comprise one or more further layers, such as an additional water-stopping layer, keeping water off the functional layer and thus ensuring breathability thereof.
  • the term functional layer is a commonly used term in the art of footwear and refers to a layer combining waterproof and breathable characteristics.
  • a functional layer is also often referred to as a waterproof, breathable membrane.
  • the waterproof, breathable laminate construction comprises multiple functional layer pieces and at least one textile layer.
  • the waterproof, breathable laminate constructions may comprise multiple functional layer pieces joined together, e.g. by gluing or welding, and the resulting composite functional layer may be joined with an inner sock-shaped textile layer and/or with an outer sock-shaped textile layer.
  • the waterproof, breathable bootie 10 may be used for one shoe size, but different shoe models. It is also possible that the waterproof, breathable bootie has sufficient elasticity to be used for various shoes sizes, such as a nominal shoe size and one or two shoe sizes bigger.
  • Fig. 1D illustrates the sewing of an adhesive tape 14 to the waterproof, breathable bootie 10.
  • the adhesive tape 14 is arranged along the opening of the waterproof, breathable bootie 10. It may also be arranged somewhat spaced from the opening of the waterproof, breathable bootie 10. In either case, the adhesive tape 14 is considered to be is arranged in a collar region of the waterproof, breathable bootie 10.
  • the sewing of the adhesive tape 14 to the waterproof, breathable bootie 10 is illustrated by zigzag line 90.
  • the adhesive tape 14 comprises a thermoplastic glue, such as thermoplastic polyurethane.
  • the resulting waterproof, breathable bootie 10 is thus configured to be attached to the inner space of footwear by inserting the waterproof, breathable bootie 10 into the inner space and activating the thermoplastic glue of the adhesive tape 14.
  • Fig. 2A further depicts a sole pressure plate 30.
  • the sole pressure plate 30 is movable in a vertical direction. It is also possible that the support arm structure 28 is movable in a vertical direction.
  • the sole pressure plate 30 is configured to exert pressure onto the underside of the last 20 and any interposed structure, i.e. any interposed part of the footwear. In Fig. 2A , the sole pressure plate 30 is depicted as spaced from the last 20.
  • the waterproof, breathable bootie 10 as depicted in Fig. 2A , comprises an adhesive tape 14 in its collar region.
  • the adhesive tape 14 is depicted with a dotted pattern.
  • the waterproof, breathable bootie 10 comprises a bootie-side adhesive patch 16 in a toe region of the waterproof, breathable bootie 10.
  • the bootie-side adhesive patch 16 is provided both on the front side and the underside of the waterproof, breathable bootie 10 in the toe region.
  • the bootie-side adhesive patch 16 may be applied via spraying or brushing.
  • An exemplary adhesive for the bootie-side adhesive patch 16 is latex-based adhesive Technicoll ® 9222-1.
  • the waterproof, breathable bootie 10 is fixed in position in the inner space 12 of the footwear 2. It is pointed out that, depending on the specific footwear construction in question, the waterproof, breathable bootie 10 may be attached to one or all or a subset of the outer construction of the upper assembly 4, a hidden portion of the upper assembly 4, such as an assembly insole thereof, and the sole 8. While the exertion of pressure and heating, as depicted in Fig. 2C , is primarily intended to activate the bootie-side adhesive patch 16 in the toe region and the footwear-side adhesive patch 18 in the heel region, the adhesive tape may also experience some preliminary positional fixing.
  • pressure is exerted onto the last 22 from outside of the footwear via an instep pressuring device 32 and via a forked heel pressuring device 34.
  • the instep pressuring device 32 and the last 22 form a press for a forward portion of the collar region of the waterproof, breathable bootie 10, thus helping in the creation of the attachment between the adhesive tape 14 of the waterproof, breathable bootie 10 and the upper assembly 4 in that part.
  • the forked heel pressuring device 34 and the last 22 form a press for a rearward portion and the left and right side portions of the collar region of the waterproof breathable bootie 10, thus helping in the creation of the attachment between the adhesive tape 14 of the waterproof, breathable bootie 10 and the upper assembly 4 in that part.
  • the last 22 is heated to between 20° C and 130°C.
  • the instep pressuring device 32 and the forked heel pressuring device 34 are pushed against the outer construction of the upper assembly 4 with a pressure of between 0.2 bar and 5 bar. These temperature and pressure values are maintained for about 3 min. It is pointed out that the temperature and pressure values may depend on the footwear in question, the adhesive used, the tooling used, and other factors.
  • Fig. 3 illustrates a method for permanently waterproofing footwear 2 in accordance with another exemplary embodiment of the invention by depicting various process steps in a schematic manner.
  • Fig. 3A is a schematic side view.
  • a last 23 is depicted.
  • the last 23 is a heatable last. It has a heating device 36 and an electric cord 38, with which the heating device 36 is provided with electric power.
  • Fig. 3C depicts the last 23 and the waterproof, breathable bootie 10 of Fig. 3B inserted into footwear 2.
  • Fig. 3C is also a schematic side view.
  • the last 23 and the waterproof, breathable portion 10 are inserted into an inner space of the footwear 2, in particular into an inner space formed by an upper assembly 4 of the footwear 2 and a sole 8 of the footwear 2.
  • Fig. 4 shows footwear 2 in accordance with various exemplary embodiments of the invention, made waterproof by methods for permanently waterproofing footwear in accordance with exemplary embodiments of the invention.
  • the footwear 2 of Fig. 4 is shown in schematic, longitudinal cross-sectional views.
  • the footwear 2 of Fig. 4 may be made waterproof in accordance with any of the methods described herein, in particular with any of the methods described above with respect to Figs. 1 to 3 .
  • the waterproof, breathable bootie 10 is attached to the breathable upper material 40, to the tongue 42, and to the assembly insole 44 in the forefoot portion / toe region 90, in the heel region 96, and the donning region 98.
  • the waterproof, breathable bootie is fixed in position by various adhesive elements, as will be described below.
  • the waterproof, breathable bootie 10 is free of attachments to the remainder of the upper assembly 4 in the mid-foot portion 92.
  • the waterproof, breathable bootie 10 is neither attached to the outer construction, comprising the breathable upper material 40 and the tongue 42, nor to the assembly insole 44 in the mid-foot portion 92.
  • the waterproof, breathable bootie 10 is free to move with respect to the surrounding elements of the upper assembly 4 in the mid-foot portion 92.
  • the waterproof, breathable bootie 10 may further be elastic, at least in said mid-foot portion. In that way, the bootie may conform well to the user's foot.
  • additional footwear-side adhesive patches are provided instead of the additional bootie-side adhesive patches 16.
  • the wrapped around portion of the waterproof, breathable bootie 10 may provide a particularly convenient insertion of the foot for the user, as the foot is led into the waterproof, breathable bootie 10 in a funnel-like manner.
  • the sole 8 of the footwear 2 of Fig. 5B is a breathable sole.
  • the sole 8 is of a breathable structure.
  • the sole 8 has a circumferential portion 60 and stabilizing bars 62.
  • the stabilizing bars 62 and the circumferential portion 60 may be integrally molded from a plastics material. While the stabilizing bars 62 are depicted as longitudinal bars in the cross-sectional view of Fig. 5B , the stabilizing bars 62 may be arranged in different directions. In particular, the stabilizing bars 62 may form a stabilization grid within the circumferential portion 60.
  • the stabilizing bars 62 / the stabilization grid may extend over one or more portions of the sole 8, e.g. over a forefoot portion of the sole 8 and/or over a heel portion of the sole 8.
  • the sole 8 of the footwear 2 of Fig. 5C is a breathable sole, as is the sole 8 of the footwear 2 of Fig. 5B . While the sole 8 of Fig. 5B relies on water vapor discharge towards the bottom of the sole, the sole 8 of Fig. 5C relies on water vapor discharge towards the lateral sides of the sole. The bottom surface of the sole 8 of Fig. 5C is free of water vapor discharge holes. However, it is also possible that the sole of footwear in accordance with exemplary embodiments of the invention has water vapor discharge holes towards the bottom and towards the side.
  • the footwear 2 of Fig. 5C also allows for water vapor discharge through the breathable upper material 40 as well as through the sole 8.
  • Water vapor can travel from the underside of the wearer's foot through the waterproof, breathable bootie 10, through the assembly insole 44, into and through the structure or material 68, and through the water vapor discharge holes 66 to an outside environment of the shoe. Due to the straight air flow path between the left and right sides of the sole 8, an efficient water vapor discharge through the sole 8 may be achieved.
  • the bootie being having a breathable, waterproof laminate construction, the wearer's foot is protected from water, also from water entering through the water vapor discharge holes 66.
  • Fig. 6 shows various tongue constructions, as may be present in footwear in accordance with exemplary embodiments of the invention, in a schematic manner.
  • Fig. 6 shows schematic top views of the respective tongue constructions.
  • Fig. 6A depicts a portion of the upper material 40 of the upper assembly 4 and an originally separate tongue 42.
  • the tongue piece 42 is attached to the upper material 40.
  • the tongue 42 is sewn to the upper material 40.
  • Fig. 6B depicts a portion of the upper material 40 of the upper assembly 4.
  • the tongue 42 is an integral part of the upper material 40. It can be said that the outer construction has a mono tongue.
  • Fig. 6 shows various tongue constructions, as may be present in footwear in accordance with exemplary embodiments of the invention, in a schematic manner.
  • Fig. 6 shows schematic top views of the respective tongue constructions.
  • Fig. 6A depicts a portion of the upper material 40 of the upper assembly 4 and an originally separate tongue 42.
  • the tongue piece 42 is attached to the upper material
  • Fig. 7B shows a waterproof, breathable two-layer laminate 51.
  • the two-layer laminate 51 has a functional layer 54, which is an ePTFE membrane in the exemplary embodiment of Fig. 7B , and a textile layer 56, which is a knitted layer in the exemplary embodiment of Fig. 7B .
  • the laminate 51 can be used in any orientation for the waterproof, breathable bootie 10, i.e. the two-layer laminate 51 can be used with the functional layer 54 facing the wearer's foot and with the textile layer 56 facing the wearer's foot.
  • a functional layer and a laminate are considered to have waterproof characteristics in case the requirements specified in DIN EN 343 (2010) are met, i.e. a test of the liquid water resistance with respect to hydrostatic water pressure according to EN 20 811 (1992) yields a liquid water resistance Wp of 8000 Pa, or more.
  • Water vapor permeability as used herein concerning the functional layer and the laminate comprising the functional layer, is tested and defined in EN ISO 15496, also known as the "Cup Test".
  • a 20 x 20cm or ⁇ 100mm sample of the waterproof, breathable laminate is placed onto a container containing water and covered with a membrane. Then a cup containing potassium acetate and being covered by the same membrane is placed on the sample. Water vapor passes through the laminate into the cup, whose weight increase is then determined.
  • the laminate is considered water vapor permeable or breathable if the water vapor permeability is greater than or equal to 0,01 g/(Pa*m2*h).
  • the waterproof, breathable laminate may also be referred to as waterproof, water vapor permeable laminate.
  • the waterproofness of footwear may be determined by use of the Centrifuge test described in U.S. Pat. No. 5,329,807 , and incorporated by reference herein in its entirety. The centrifuge tests may be carried out for 30 minutes. The footwear article is considered to be waterproof if no leakage is seen after 30 minutes.
  • the breathability of footwear may be assessed in accordance with the determination of the Whole Boot Moisture Vapor Transmission Rate Test in accordance with the Department of Defense Army Combat Boot Temperate Weather Specifications.
  • the specifications are as follows:
  • the boot breathability 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
  • the footwear may be considered breathable if above calculated value is above 1.5 grams/hour.
  • said limit value may be extrapolated in accordance with the increased / decreased surface area of the shoe.
  • the waterproofness and the breathability of the bootie as a whole may also be determined by use of the Centrifuge test and the Whole Boot Moisture Vapor Transmission Rate Test, respectively, as laid out above.
  • the elasticity of the laminate and of the bootie may be measured according to DIN EN 14704-1 (July 2005), method A.
  • Test sample is subject to 3 to 5 consecutive test cycles. In each test cycle, the test sample is subject to a constant extension of 30% of said gauge length, in samples cut circumferentially and 10% of said gauge length in samples cut longitudinally to the formed bootie, and the maximum force of the last cycle is measured.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP23177674.1A 2018-12-10 2018-12-10 Verfahren zur dauerhaften wasserabdichtung von schuhwerk Pending EP4233623A3 (de)

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EP23177674.1A EP4233623A3 (de) 2018-12-10 2018-12-10 Verfahren zur dauerhaften wasserabdichtung von schuhwerk

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EP23177674.1A EP4233623A3 (de) 2018-12-10 2018-12-10 Verfahren zur dauerhaften wasserabdichtung von schuhwerk
PCT/EP2018/084179 WO2020119881A1 (en) 2018-12-10 2018-12-10 Method for permanently waterproofing footwear
EP18816049.3A EP3893685B1 (de) 2018-12-10 2018-12-10 Verfahren zur dauerhaften wasserabdichtung von schuhwerk

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EP (2) EP4233623A3 (de)
JP (1) JP2022519155A (de)
KR (1) KR20210097168A (de)
CN (1) CN113163892A (de)
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IT202000004468A1 (it) * 2020-03-03 2021-09-03 Macpi Spa Pressing Div Semilavorato in maglia per la fabbricazione di calze, calzature e guanti e processo per la sua realizzazione
GB2606262B (en) 2021-02-26 2023-06-14 Shanghai Uniwise Int Co Ltd Composite items of footwear and handwear
US11638452B2 (en) * 2021-02-26 2023-05-02 Shanghai Uniwise International Co Limited Composite items of footwear and handwear
CN113598479B (zh) * 2021-08-27 2022-09-09 瑞安市华拓鞋业有限公司 一种防水鞋的生产工艺

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US5329807A (en) 1993-06-18 1994-07-19 W. L. Gore & Associates, Inc. Centrifuge test apparatus for footwear and apparel
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Publication number Publication date
CA3118655A1 (en) 2020-06-18
CN113163892A (zh) 2021-07-23
EP4233623A3 (de) 2023-09-20
WO2020119881A1 (en) 2020-06-18
JP2022519155A (ja) 2022-03-22
EP3893685B1 (de) 2023-06-07
KR20210097168A (ko) 2021-08-06
EP3893685A1 (de) 2021-10-20
US20220061462A1 (en) 2022-03-03
EP3893685C0 (de) 2023-06-07

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