SHOE, IN PARTICULAR SPORTS SHOE, AND METHOD FOR MANUFACTURING SUCH A SHOE

Description

Technical Field

[0001] The present invention relates to the technical field of footwear articles, in particular sports shoes, comprising two tubular textile elements used in the construction of the upper and possibly the sole of said footwear articles, and the manufacturing processes of such footwear articles. Previous technique

[0002] Conventional footwear typically consists of an upper and a sole structure. The upper is secured to the sole structure and forms a cavity within the footwear to comfortably accommodate and secure the foot. The sole structure is attached to a lower section of the upper and positioned between the ground and the upper during operation.

[0003] In athletic footwear, the sole structure may include an outsole and a midsole. The midsole often incorporates a polymer foam material that absorbs shock upon impact with the ground, thus mitigating the effects on the foot and leg during walking, running, or other ambulatory activities. The sole structure may also include a lining positioned near the bottom of the foot to enhance the footwear's comfort.

[0004] The soles are traditionally attached to the uppers using a construction method called the Strobel method, during which the various sole components (insole, midsole, and outsole, in particular) are joined. The manufacturing processes for a classic shoe require dozens of steps and produce a significant amount of waste from material cutting.

[0005] The aim is to simplify the manufacturing processes for footwear, particularly by reducing the number of steps and / or energy and material consumption. This issue also involves finding a manufacturing process that can be implemented as close as possible to the point of use of the footwear in order to reduce its carbon footprint, facilitate inventory management, and allow for customization of the footwear.

[0006] One solution involves eliminating the sewing steps required to shape the initially flat upper into three dimensions. The upper is obtained by assembling one or a few pieces, rather than multiple pieces sewn together. Footwear products are thus known to include a tubular textile element with heat-fused textile sections that form at least part of the upper. The aim is to improve these footwear products to make them lightweight, flexible, and breathable, while offering satisfactory abrasion and tear resistance, and conforming comfortably to the shape of the foot.

[0007] FR 3 098 690 A1 describes the manufacture of a shoe from two superimposed tubular textile elements comprising at least partially heat-fusible yarns that are thermofused during the thermoforming of the two tubular textile elements into an upper. FR 3 098 690 A1 describes that it is possible to use different knit patterns and different types of yarn (nature and / or color and / or transparency, cf.

[0126] ) but without specifying the type of yarn, nor its arrangement in the shoe.

[0008] Such footwear articles, despite a particular construction, must also offer varied designs respecting the technical criteria stated above, while limiting the aesthetic and / or functional component(s) necessary for their manufacture.

[0009] It may therefore be desirable to create one or more viewing zones of a particular portion of the footwear from its exterior. One proposed method is to melt hot-melt yarns and form a transparent film-forming zone. However, this type of film-forming zone reduces the breathability and flexibility of the upper when the heat-fused monofilament yarns have a large diameter, or the abrasion / tear resistance when the heat-fused monofilament yarns have a small diameter. Furthermore, when the upper comprises an inner and an outer layer containing hot-melt yarns, these yarns adhere to the inner layer when heat-fused, further stiffening the treated area of ​​the upper.

[0010] The aim is to create a viewing area that does not alter permeability, or at least limits the decrease in permeability, and maintains good flexibility in the region of the stem containing it, as well as good resistance to abrasion and tearing, particularly when a through opening is located in this viewing area. Description of the invention

[0011] The invention relates to a shoe as specified in the attached independent claim 1 and a method for manufacturing a shoe as specified in the attached independent claim 15. Preferred embodiments of the invention are described in the dependent claims. Internal textile tubular element

[0012] Advantageously, the internal tubular textile element is woven or knitted, preferably knitted.

[0013] Preferably, the internal textile tubular element comprises one or more monofilament yarn(s) and / or one or more multifilament yarn(s) and / or one or more spun yarn(s) of fibers.

[0014] Preferably, the internal tubular textile element comprises one or more hot melt / melted yarn(s) at least in part, more preferably the melted portion(s) of the yarn(s) form(s) respectively one or more melted textile portion(s) according to the invention.

[0015] The internal tubular textile element may include: one or more spun fibers and / or one or more multifilamentary fibers and / or one or more monofilamentary fibers, non-fusible / non-thermally fused, and / or one or more multifilamentary fibers that are partially or entirely thermally fused / thermally fused, and / or one or more monofilamentary fibers that are partially or entirely thermally fused / thermally fused.

[0016] The internal textile tubular element preferably includes a volume for receiving the foot at least in part, and an opening for introducing the foot into said volume.

[0017] Advantageously, the internal textile tubular element comprises an internal textile portion covering at least part of the foot, including said main internal textile portion. In particular, the internal textile tubular element comprises an internal textile portion covering at least part of the foot and an internal sole textile portion in textile bond, in particular knitted, with the internal textile portion covering.

[0018] Advantageously, the internal textile part covering at least part of the foot, and the internal textile part of the sole are in a single piece of textile construction, in particular of single knitted construction, more particularly the internal tubular textile element is a knitted piece of single knitted construction.

[0019] The internal textile part covering at least part of the foot may cover all or one or more region(s) of the top of the foot.

[0020] The internal textile part of the sole can cover all or one or more areas under the foot.

[0021] The internal textile cover is arranged according to the desired shaft configuration.

[0022] Advantageously, the region(s) of the top of the foot in which the internal textile part of the foot covering extends at least partially is / are chosen from: the forefoot region extending on the lateral side and / or the forefoot region extending on the medial side; and / or the forefoot region extending between the lateral and medial sides; and / or the instep area; and / or the midfoot region extending on the lateral side; and / or the midfoot region extending on the medial side; and / or the heel region extending on the lateral side and / or the heel region extending on the medial side; and / or the heel region extending between the lateral and medial sides; and / or the leg region extending partly above the malleolus.

[0023] Advantageously, the region(s) under the foot in which the internal textile part of the sole extends is / are chosen from: the forefoot region extending between the lateral and medial sides; and / or the midfoot region extending between the lateral and medial sides; and / or the heel region extending between the lateral and medial sides.

[0024] In one embodiment, the internal tubular textile element includes an end forming a toe pocket extending into a heel area.

[0025] Preferably, the internal textile tubular element is an internal knitted sock.

[0026] Preferably, the internal textile tubular element comprises an external face and an internal face, in particular substantially opposite.

[0027] Preferably, the main internal textile portion extends between the internal and external faces of the internal textile tubular element, in particular the internal and external faces of the main internal textile portion are portions of the internal and external faces of the internal textile tubular element. External textile tubular element

[0028] Advantageously, the external textile tubular element is woven or knitted, preferably knitted. Preferably, the external textile tubular element comprises one or more monofilament yarns and / or one or more multifilament yarns and / or one or more spun yarns of fibers.

[0029] Preferably, the external tubular textile element comprises one or more hot melt / melted yarn(s) at least in part, more preferably the melted portion(s) of the yarn(s) form(s) respectively one or more melted textile portion(s) according to the invention.

[0030] The external tubular textile element may include: one or more spun fibers and / or one or more multifilamentary fibers and / or one or more monofilamentary fibers, in particular non-fusible / non-thermally fused, and / or one or more multifilamentary fibers that are at least partially or entirely thermally fused / thermally fused, and / or one or more monofilamentary fibers that are at least partially or entirely thermally fused / thermally fused.

[0031] The external textile tubular element preferably includes a volume for receiving the foot at least in part, and an opening for introducing the foot into said volume.

[0032] Advantageously, the external textile tubular element includes an external textile portion covering at least part of the foot comprising said main external textile portion.

[0033] In particular, the external textile tubular element includes an external textile part covering at least part of the foot and an external textile part of the sole in textile bond, in particular knitted, with the external textile part covering.

[0034] Advantageously, the external textile part covering at least part of the foot, and the external textile part of the sole are in a single piece of textile construction, in particular of single knitted construction, more particularly the external tubular textile element is a knitted piece of single knitted construction.

[0035] The external textile part covering at least part of the foot may cover all or one or more region(s) of the top of the foot.

[0036] The external textile part of the sole can cover all or one or more region(s) of the underside of the foot.

[0037] The outer textile cover is arranged according to the desired shaft configuration.

[0038] Advantageously, the region(s) of the top of the foot in which the outer textile covering extends at least partially over the foot is / are chosen from: the forefoot region extending on the lateral side; and / or the forefoot region extending on the medial side; and / or the forefoot region extending between the lateral and medial sides; and / or the instep area; and / or the midfoot region extending on the lateral side; and / or the midfoot region extending on the medial side; and / or the heel region extending on the lateral side; and / or the heel region extending on the medial side; and / or the heel region extending between the lateral and medial sides; and / or the leg region extending partly above the malleolus.

[0039] Advantageously, the region(s) under the foot in which the textile part of the outsole extends is / are chosen from: the forefoot region extending between the lateral and medial sides; and / or the midfoot region extending between the lateral and medial sides; and / or the heel region extending between the lateral and medial sides.

[0040] In one embodiment, the external textile tubular element includes an end forming a toe pocket extending into a heel area.

[0041] Preferably, the external textile tubular element is an external knitted sock.

[0042] Preferably, the external textile tubular element comprises an external face and an internal face, in particular substantially opposite.

[0043] In a preferred embodiment, the internal textile tubular element is disposed at least partly within the volume of the external textile tubular element, in particular the external face of the internal textile tubular element is disposed opposite the internal face of the external textile tubular element.

[0044] Preferably, the inner face of the internal textile tubular element is positioned opposite, in particular opening directly into the volume that receives the foot of the footwear item.

[0045] Preferably, the main external textile portion extends between the inner and outer faces of the external textile tubular element, in particular the inner and outer faces of the main external textile portion are portions of the inner and outer faces of the external textile tubular element.

[0046] In one embodiment, the external textile tubular element may include, in addition to the main external textile portion, an additional external textile portion comprising one or more transparent and / or translucent monofilament yarn(s) forming a viewing area of ​​an additional internal textile portion comprising the internal textile tubular element.

[0047] Preferably, the main external textile portion is separated from the additional external textile portion by an intermediate external textile portion, even more preferably the intermediate external textile portion does not include one or more transparent and / or translucent monofilament yarn(s) and / or includes one or more thermally fused textile portion(s).

[0048] Preferably, the additional external textile portion extends between the inner and outer faces of the external textile tubular element.

[0049] Preferably, the additional internal textile portion extends between the internal and external faces of the internal textile tubular element.

[0050] Preferably, the additional internal and external textile portions are at least partially overlapped. The stem may comprise several pairs of additional internal and external textile portions as described above, and generally in this text, depending on the desired technical effects, for example one, two, three, four, or more additional internal and external textile portions.

[0051] The characteristics defining the main external textile portion and the main internal textile portion apply independently of each other respectively to the additional external and internal textile portions.

[0052] Advantageously, an additional external textile portion, respectively an additional internal textile portion, is distinct from a main external textile portion, respectively from a main internal textile portion.

[0053] In one embodiment, the internal textile tubular element and the external textile tubular element are joined together by means of one or more thermofused textile portion(s), preferably the internal textile part of the sole is joined to the external textile part of the sole by one or more thermofused textile portion(s) and / or the internal textile cover part is joined to the external textile cover part by one or more thermofused textile portion(s).

[0054] In one embodiment, the stem comprises at least two textile portions, in particular at least two portions of one or more yarns, joined together by one or more thermofused textile portion(s).

[0055] Preferably, the ratio of the total mass of one or more thermofused textile portion(s) of the internal textile part of the sole of the internal textile tubular element to the total mass of said internal textile part of the sole is greater than or equal to 50% or 60% or 70% or 80% or 90% or about 100%.

[0056] Preferably, the ratio of the total mass of one or more thermofused textile portion(s) of the external textile part of the sole of the external textile tubular element to the total mass of said external textile part of the sole is greater than or equal to 50% or 60% or 70% or 80% or 90% or about 100%.

[0057] The internal and external textile parts of the sole may therefore include a significant amount of hot-melt thread(s) at least in part.

[0058] The inner textile tubular element and / or the outer textile tubular element is / are preferably knitted on a circular knitting machine whose needle bed(s) is / are of small diameter(s), particularly suitable for knitting a sock. Stem

[0059] Advantageously, the stem comprises, in particular is essentially made up of, the inner textile part covering at least part of the foot of the inner textile tubular element and the outer textile part covering at least part of the foot of the outer textile tubular element.

[0060] Advantageously, the upper comprises one or more regions covering the top of the foot selected from: a forefoot region extending laterally and / or a forefoot region extending medially; a forefoot region extending between the lateral and medial sides; an instep area; a midfoot region extending laterally; and / or a midfoot region extending medially; a heel region extending laterally and / or a heel region extending medially; a heel region extending between the medial and lateral sides, or a combination thereof.

[0061] The upper may also include one or more aesthetic component(s) (logo, embroidery, etc.) and / or one or more functional component(s), for example a hard front toe or a rear buttress. sole structure

[0062] Advantageously, the shoe according to the invention comprises an upper and a sole structure attached to the upper.

[0063] The sole structure may include an outsole, and possibly a midsole and / or a sockliner.

[0064] Advantageously, the outsole includes an external surface for ground contact. The midsole can be positioned between the outsole and the upper.

[0065] The midsole can alternatively be positioned within the foot compartment of the shoe, and optionally be attached to said foot compartment in a removable manner.

[0066] Preferably, the sole structure of the shoe includes the internal textile part of the sole of the internal textile tubular element and the external textile part of the sole of the external textile tubular element, and possibly in addition one or more sole element(s).

[0067] Advantageously, a sole element, for example a midsole or an outsole, can be placed between the inner textile part of the sole and the outer textile part of the sole. Thermally fused textile portion

[0068] The internal textile tubular element may include one or more thermofused textile portion(s) and / or the external textile tubular element may include one or more thermofused textile portion(s) and / or the stem may include one or more thermofused textile portion(s).

[0069] A thermofused textile portion can be a portion: of a single-component hot-melt / heat-melt or two-component monofilament wire comprising at least one first hot-melt / heat-melt component and at least one second non-hot-melt / non-heat-melt component or, of a multifilament wire comprising one or more single-component hot-melt / heat-melt filaments or two-component filaments comprising at least one first hot-melt / heat-melt component and at least one second non-hot-melt / non-heat-melt component, possibly mixed with one or more single-component non-hot-melt / non-heat-melt filaments.

[0070] A single-component, hot-melt / melt-off filament or monofilament wire can be, for example, made of polyurethane, for example having a melting temperature of about 100°C-120°C.

[0071] A monofilamentary, two-component filament or yarn can be of the core-coat or side-by-side type, that is to say, comprising a coat or one side comprising said first component having a melting temperature of about 100°C-120°C and a core or the other side comprising said second component, in particular having a melting or softening temperature higher than that of the first component, for example ranging from 150°C to 260°C, for example around 250°C in the case of polyester (for example polyethylene terephthalate).

[0072] For example, the first component can be made of polyester, or polyurethane respectively, and the second component can be made of polyester, or polyurethane respectively. Viewing area

[0073] Advantageously, a viewing area is an area through which it is possible to view from outside the main external textile portion, that is to say from the external face of said main external textile portion, the external face of the main internal textile portion, in particular the colour(s) and / or a logo and / or a pattern(s) (for example one or more through opening(s)), of the external face of the main internal textile portion.

[0074] Advantageously, the stem can include several viewing areas, for example a viewing area located in the forefoot region and / or a viewing area located in the toe region, and / or a viewing area located in the medial region, and / or a viewing area located in the lateral region.

[0075] A viewing area according to the present invention is a main or additional external textile portion of the external textile tubular element formed of one or more transparent and / or translucent monofilamentary yarn(s). Son)

[0076] The transparent and / or translucent monofilament filament(s) may be colorless or colored.

[0077] Preferably, the transparent and / or translucent monofilament yarn(s) according to the invention are not heat-fusible and / or are not heat-melted. This arrangement allows for continued mobility between the yarn(s) and does not alter the permeability of the portion, particularly the main or additional external (respectively internal) textile portion, comprising said monofilament yarn(s).

[0078] The monofilamentary yarn(s) and / or spun fiber(s) and / or multifilamentary yarn(s), in particular non-thermally fused / non-thermally fusible, is / are made of one or more materials chosen from: a list I comprising: polyesters, in particular selected from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) or a combination thereof; polyamides, in particular selected from PA 6, PA 6-6, and a combination thereof; polyolefins, in particular polyethylene, polypropylene, and a combination thereof; elastanes; and a combination thereof; and / or a list II comprising: cotton, regenerated cellulose, for example viscose, wool, and a combination thereof.

[0079] A multifilament yarn can have a linear mass ranging from 5 dtex to 500 dtex, in particular ranging from 5 dtex to 300 dtex, more particularly ranging from 5 dtex to 200 dtex or to 100 dtex.

[0080] In one embodiment, the monofilamentary yarn(s) (in particular transparent and / or translucent) is / are one or more monofilamentary yarn(s) made of polyester, for example polyethylene terephthalate (PET) or polybutylene terephthalate (PBT).

[0081] In one embodiment, the transparent and / or translucent monofilament yarn(s) each have: a linear mass ranging from 5 denier to 100 denier, in particular ranging from 5 denier to 60 denier, more particularly ranging from 20 denier to 40 denier (in particular measured according to ASTM-D-844); and / or a diameter greater than or equal to 0.01 mm and less than or equal to 1 mm, in particular greater than or equal to 0.03 mm or 0.05 mm, more particularly less than or equal to 0.50 mm or 0.35 mm, even more particularly less than or equal to 0.15 mm; and / or a tenacity ranging from 1 g / denier to 20 g / denier, in particular ranging from 1 g / denier to 15 g / denier, more particularly ranging from 3 g / denier to 7 g / denier (in particular measured according to DIN 53834-1, in particular of 1976); and / or an elongation at break ranging from 5% to 80%, in particular ranging from 5% to 50%, more particularly ranging from 15% to 50% (in particular measured according to DIN 53834-1, in particular dating from 1976); and / or has a trilobed cross-section.

[0082] In a preferred embodiment, the monofilament yarn(s), in particular transparent and / or translucent, is / are one or more yarns in one or more thermoplastic elastomers, in particular one or more olefinic thermoplastic elastomers, especially as described below. Advantageously, the inventors have determined that the aforementioned linear density and diameter facilitate the implementation of said monofilament yarn on a textile machine, in particular by knitting, while offering a good compromise between stiffness and flexibility.

[0083] Advantageously, the trilobed cross-section can be recognized under a microscope.

[0084] Advantageously, the trilobed cross-section gives brightness to the viewing area. Definitions

[0085] In this text, the term "hot melt" or "hot melt first component" means any material or first component that is hot melted during the manufacture of the shoe according to the invention.

[0086] In this text, the opening for the introduction of the foot in the shoe, sock (internal or external), or even a tubular textile element (internal or external) is understood to mean the natural opening for the introduction of the foot into the foot compartment of the shoe, sock, or tubular textile element, particularly situated between the midfoot and rearfoot regions, more specifically surrounding all or part of the ankle.

[0087] In this text, "non-thermally fused" means any material / component that is not thermally melted during the manufacture of the shoe according to the invention. This material or component may be thermoplastic or not, but it must have a melting or softening temperature, or a degradation temperature, that is higher than the highest heating temperature used during the manufacture of the footwear according to the invention.

[0088] In this text, transparent and / or translucent means any material, in particular any monofilament, through which it is possible to see one or more colors, and / or one or more patterns, possibly in relief.

[0089] It is possible to vary the transparency of a monofilament wire until it is translucent by varying, for example, the mass percentage of titanium dioxide in the wire.

[0090] In this text, the term "hot-fusible wire(s)" is understood to mean at least in part that the wire(s) in question is / are totally hot-fusible or each includes / include a portion of their structure which is hot-fusible.

[0091] In one embodiment, the main internal textile portion comprises one or more transparent and / or translucent monofilament yarn(s), notably forming an internal viewing area.

[0092] In one embodiment, the internal tubular textile element, in particular the internal textile part covering at least part of the foot, comprises: one or more heat-fused textile portion(s), in particular one or more heat-fusible yarn(s) at least in part which is / are heat-fused at least in part during the manufacture of the shoe; and / or one or more multifilament yarn(s) and / or one or more spun yarn(s) of fibres, in particular not heat-fused, more particularly of polyester and / or recycled, for example of PET (polyethylene terephthalate) or PBT (polybutylene terephthalate); and / or one or more elastic yarn(s), in particular of elastane; and / or one or more transparent and / or translucent monofilament yarn(s), in particular not heat-fused, arranged in the main, respectively additional, internal textile portion superimposed at least in part with the main, respectively additional, external textile portion of the external textile tubular element.

[0093] In one embodiment, the external tubular textile element, in particular the external textile part covering at least part of the foot, comprises: one or more heat-fused textile portion(s), in particular one or more heat-fusible yarn(s) at least in part which is / are heat-fused at least in part during the manufacture of the shoe; and / or one or more non-heat-fused multifilament yarn(s) and / or one or more spun fiber yarn(s), in particular non-heat-fused, more particularly polyester and / or recycled, for example PET (polyethylene terephthalate) or PBT (polybutylene terephthalate); and / or one or more elastic yarn(s), in particular elastane; and / or one or more transparent and / or translucent monofilament yarn(s), in particular non-heat-fused, arranged in the main, respectively additional, external textile portion substantially superimposed with the main, respectively additional, internal textile portion of the internal tubular textile element.

[0094] In one embodiment, the internal textile tubular element and / or the external textile tubular element each comprise in the region encircling all or part of the foot insertion opening one or more elastic thread(s), in particular said region does not comprise any heat-fused textile portion.

[0095] In one variant, the internal, or external, textile tubular element, in particular the internal, or external, textile part covering at least part of the foot, comprises in its forefoot region extending between the medial and lateral sides and / or in the instep area, one or more lacing loop(s) of unitary textile construction, in particular knitted, with the internal, or external, textile tubular element, in particular with the internal, or external, textile part covering at least part of the foot.

[0096] Advantageously, when the lacing loops are arranged on the internal textile tubular element, the external textile tubular element includes, in its forefoot region extending between the medial and lateral sides and / or in the instep area, one or more receiving through opening(s) configured to allow the passage of said lacing loop(s) through said receiving through opening(s) respectively so as to project out of said receiving through opening(s).

[0097] In one embodiment, a lacing loop is delimited by two through openings, particularly of a single textile construction, especially knitted, with the internal, or external, tubular textile element respectively. Said two openings are preferably located in the forefoot region extending between the lateral and medial sides and / or in the instep area.

[0098] For example, a lacing loop is a knitted bridge.

[0099] In particular, the instep area and / or the forefoot region extending between the lateral and medial sides of the inner and outer textile tubular elements, respectively, comprise first and second sets of through-lace openings. Each of the first and second sets of through-lace openings comprises several, for example, between three and six, sets of two openings, the two openings in each set being separated by a knitted portion forming first or second bridges. More specifically, the first and second bridges of the first and second sets of through-lace openings, respectively, are arranged in a transverse direction T substantially perpendicular to the longitudinal axis L of the inner and outer textile tubular elements.

[0100] In one embodiment, a lacing loop is formed by a woven knitted yarn, said loop projecting from the external face, in particular from the forefoot region arranged between the lateral and medial sides and / or the instep area, of the external, or internal, tubular textile element.

[0101] In one embodiment, the transparent and / or translucent monofilamentary filament(s) is / are not thermally melted.

[0102] Advantageously, the areas where the yarn(s) interweave, particularly the stitches knitted with said yarn(s), are mobile relative to one another. This arrangement provides flexibility to the main outer textile portion and improves permeability. This main outer textile portion thus allows heat and / or perspiration to escape.

[0103] In one variant, at least one yarn selected from the transparent and / or translucent monofilament yarn(s) of the main external textile portion comprises a thermoplastic elastomer, in particular an olefinic thermoplastic elastomer.

[0104] Knitting monofilament yarn, especially transparent and / or translucent yarn, on a circular knitting machine is difficult because the monofilament yarn must conform to the curvature of successive knitted loops as well as the tubular shape of the textile element. If the monofilament yarn is not suitable, it tends to break on the knitting machine and / or create a different tension on the tubular element compared to a multifilament yarn, resulting in an irregular appearance.

[0105] In addition, this monofilament yarn is combined with at least one yarn that is at least partially heat-fusible in a knitted tubular element, which knitted tubular element undergoes a thermoforming or thermocompression step.

[0106] A monofilament yarn that is too stiff and / or too thick will not provide satisfactory results. Indeed, the knitted tubular element shaped by thermoforming or thermocompression with an unsuitable monofilament yarn does not have an aesthetically pleasing and uniform appearance, which can also create discomfort for the wearer.

[0107] Advantageously, the use of a transparent and / or translucent monofilament yarn in a thermoplastic elastomer helps to obtain a regular textile tubular element, suitable for thermoforming or heat compression to manufacture a shaft that maintains a uniform appearance. Furthermore, this monofilament yarn allows for loose knitting, i.e., without applying significant tension, which facilitates the thermal shrinkage step described below.

[0108] Preferably, the thermoplastic elastomer(s), in particular olefinic, represents at least 50% by mass, more preferably at least 80% by mass, preferably at least 90% by mass, of the total mass of said at least one monofilamentary yarn.

[0109] In this text, an olefinic thermoplastic elastomer means any elastomer comprising olefinic repeating units, particularly those based on propylene and / or ethylene.

[0110] The aforementioned olefinic thermoplastic elastomer can be selected from: polyisobutylenes (PIB); and / or ethylene, propylene, and diene terpolymers (EPDM); ethylene and propylene copolymers; ethylene and alpha-olefin copolymers, for example ethylene and butene copolymers or ethylene and octene copolymers, and a mixture of the latter; preferably EPDM and ethylene and propylene copolymers; and / or mixtures of a polyolefin, in particular polypropylene, with one or more non-vulcanized olefinic thermoplastic elastomers, and possibly one or more plasticizers (for example mineral or naphthenic or paraffinic oil); and / or the said thermoplastic olefinic elastomer(s) may be ethylene and propylene copolymers, ethylene, propylene and diene terpolymers, ethylene and alpha-olefin copolymers (for example ethylene and butene copolymers or ethylene and octene copolymers).Said at least one transparent and / or translucent monofilament filament may comprise one or more thermoplastic elastomer(s).

[0111] In one embodiment, at least 80% by mass, preferably about 100% by mass, of said main external textile portion is formed of one or more monofilament yarn(s) comprising (each) one or more thermoplastic elastomer(s), in particular one or more olefinic thermoplastic elastomer(s).

[0112] Advantageously, this diameter range allows the said monofilament yarn to be knitted on a circular knitting machine, and to obtain a regular stem.

[0113] In a sub-variant, at least one yarn chosen from the transparent and / or translucent monofilament yarn(s) of the main external textile portion exhibits at least one of the following properties: has a linear mass ranging from about 50 dtex to about 300 dtex, preferably ranging from about 50 dtex to about 200 dtex, more preferably ranging from about 100 dtex to about 200 dtex; and / or has a diameter greater than or equal to 0.05 mm and less than or equal to 0.8 mm, preferably greater than or equal to 0.08 mm and less than or equal to 0.3 mm; and / or comprises one or more thermoplastic elastomer(s), in particular olefinic elastomer(s); and / or has a tenacity (cN / tex) greater than or equal to 10 cN / tex, in particular less than or equal to 100 cN / tex, more particularly less than or equal to 50 cN / tex; and / or has an elongation at break greater than or equal to 40%, in particular greater than or equal to 60%, more particularly less than or equal to 100%.

[0114] The lengthening at Breaking strength and tenacity can be determined using ISO 2062:2009, entitled Textiles - Yarns on winding - Determination of breaking strength and elongation at break of individual yarns using a constant rate elongation test apparatus, The traction speed can be, for example, 100 mm / min.

[0115] In one embodiment, said outer main textile portion, and optionally said inner main textile portion, is / are located in at least one of the following upper regions: a forefoot region extending laterally and / or a forefoot region extending medially; an instep area; a forefoot region extending between the lateral and medial sides; a midfoot region extending laterally and / or a midfoot region extending medially; a heel region extending laterally and / or a heel region extending medially; a heel region extending between the medial and lateral sides, or a combination thereof, preferably a forefoot region extending laterally and / or a forefoot region extending medially; and / or an instep area; and / or a forefoot region extending between the lateral and medial sides;a midfoot region extending on the lateral side and / or a midfoot region extending on the medial side;

[0116] Advantageously, the main external textile portion occupies at least 10%, preferably at least 20% or 30% or 40% or 50% or 60% or 70% or 80%, of the external face of the stem or of the external face of the textile part covering at least part of the foot of the external textile tubular element.

[0117] In one embodiment, said main internal textile portion is disposed in at least one of the following upper regions: a forefoot region extending laterally and / or a forefoot region extending medially; a forefoot region extending between the lateral and medial sides; an instep area; a midfoot region extending laterally and / or a midfoot region extending medially; a heel region extending laterally; and / or a heel region extending medially; a heel region extending between the medial and lateral sides, or a combination thereof, preferably a forefoot region extending laterally and / or a forefoot region extending medially; and / or an instep area; and / or a forefoot region extending between the lateral and medial sides;a midfoot region extending on the lateral side and / or a midfoot region extending on the medial side;

[0118] Advantageously, the main internal textile portion occupies at least 10%, preferably at least 20% or 30% or 40% or 50% or 60% or 70% or 80%, of the external face of the stem or of the external face of the textile part covering the foot of the internal textile tubular element.

[0119] In one embodiment, the external textile tubular element is a knitted sock comprising a foot-receiving cavity, and the internal textile tubular element is a knitted sock disposed at least partly in the foot-receiving cavity of the external textile tubular element.

[0120] Advantageously, the knitted sock, from the internal or external tubular textile element, includes a heel area, a toe end, in particular closed by a seam or weld, and an opening for the introduction of the foot.

[0121] Advantageously, the internal and external textile tubular elements are at least partially overlapped.

[0122] In one embodiment, the internal and external textile tubular elements are two separate knitted pieces.

[0123] This arrangement facilitates differentiation, particularly regarding dimensions and / or configurations (for example, the arrangement of an additional knitted pocket of unitary knitted construction with a knitted textile tube element), between the internal and external textile tube elements, respectively, and the external and internal textile tube elements, respectively. In one embodiment, both the external and internal textile tube elements are of unitary textile construction.

[0124] Advantageously, the internal and external textile tubular elements are in a single piece of textile, in particular of unitary textile construction, more particularly of unitary knitted construction.

[0125] Preferably, said part has a general U-shape before folding of the internal textile tubular element into the foot-receiving volume of the external textile tubular element (in particular this folding is carried out in the shoe manufacturing process according to a second aspect of the invention).

[0126] Preferably, the inner sock is in a folded position within the foot pocket of the outer sock.

[0127] The folding of the inner sock into the outer sock begins at the level of their foot insertion openings or at the level of their open toes.

[0128] In one embodiment, the foot insertion opening, respectively the toe, of the external textile tubular element is in textile connection, in particular knitted, with the foot insertion opening, respectively the toe, of the internal textile tubular element.

[0129] The folding is therefore done from the opening for inserting the foot or from the toe tip which was opened during the manufacturing process.

[0130] In one embodiment, the main internal textile portion does not include a thermofused textile portion.

[0131] Advantageously, the peripheral region of the stem bordering all or part of the main internal and external textile portions overlapping at least in part, comprises one or more thermofused textile portion(s), in particular bonding the internal textile covering part of the foot with the external textile covering part of the foot.

[0132] In one embodiment, the main internal textile portion comprises one or more non-thermally fused monofilament yarn(s), possibly transparent and / or translucent.

[0133] Preferably, the said yarn(s) form(s) an internal viewing area, substantially opposite the viewing area of ​​the main external textile portion (which can be described as the external viewing area).

[0134] Advantageously, the internal viewing area allows visualization of the inside of the shoe's reception volume, and therefore the part of the foot opposite said area.

[0135] In one embodiment, the internal textile tubular element, in particular its internal textile part covering at least part of the foot, comprises one or more thermofused textile portion(s), and the external textile tubular element, in particular its external textile part covering the foot, does not comprise any thermofused textile portion or one or more thermofused textile portion(s) whose total mass is less than or equal to 0.50 times the total mass of the thermofused textile portion(s) of the internal textile tubular element, in particular less than or equal to 0.50 times the total mass of the thermofused textile portion(s) of the internal textile part covering the foot.

[0136] Advantageously, the external textile tubular element comprises less thermofused textile material than the internal textile tubular element.

[0137] This arrangement allows for an external tubular element that offers greater flexibility and is more breathable than the internal tubular element.

[0138] In one embodiment, the main, or additional, external textile portion, and / or the main, or additional, internal textile portion each comprise one or more textile through-opening(s), in particular knitted, notably with one or more monofilamentary yarn(s) (as described in this text, for example transparent and / or translucent) or with one or more multifilamentary yarn(s).

[0139] Preferably, the through opening(s) extend(s) between the inner and outer faces of the main, or additional, outer textile portion and / or of the main, or additional, inner textile portion.

[0140] The main, or additional, external, or internal textile portion may include through-openings: distributed in a given region of said main or additional portion, for example a given forefoot region of the textile cover part, and / or surrounding at least a part of said main or additional portion, in a given region, for example in a midfoot region on the lateral or medial side of the textile cover part, and / or a region of the upper less stressed in tension or shear.

[0141] The through opening(s) includes (or is / are) one or more through opening(s), in particular at least 3 or 4 or 5 or more than 5 through openings, (each) having at least one dimension greater than or equal to 1 mm or 2 mm or 3 mm or 4 mm or 5 mm or 8 mm, or greater than or equal to 10 mm, in particular the through opening(s) is / are defined as being one or more through opening(s) A.

[0142] The through opening(s) includes (or is / are) one or more through opening(s), in particular at least 3 or 4 or 5 or more than 5 through openings, (each) having at least one dimension less than or equal to 20 mm or 15 mm or 8 mm or 5 mm or 4 mm or 3 mm or 2 mm or 1 mm, in particular the through opening(s) is / are defined as being one or more through opening(s) A.

[0143] In a preferred example, the through opening(s) includes (or is / are) one or more through opening(s) having at least one dimension ranging from 3 mm to 15 mm, preferably ranging from about 5 mm to 15 mm, especially of type A.

[0144] One or more through openings can have any shape, and for example an ovoid, round, parallelepiped shape (for example square or rectangular).

[0145] The through opening(s) comprises one or more through openings, in particular at least 3 or 4 or 5 or more than 5 or more than 30 through openings, (each) having at least one dimension greater than or equal to 0.1 mm, or 0.5 mm, and less than or equal to 1 or 2 mm, in particular the through opening(s) is / are defined as being one or more B through opening(s). For example, this type of B opening(s) is found on a main, or additional, internal or external textile portion of knitted mesh or honeycomb structure.

[0146] In a preferred example, the through opening(s) includes (or is / are) one or more through opening(s) having at least one dimension ranging from 0.1 mm to 2 mm, preferably ranging from about 0.8 mm to 2 mm, especially of type B.

[0147] Advantageously, the through opening(s), in particular A and / or B, is / are knitted with one or more transparent and / or translucent monofilament yarn(s), in particular non-thermally fused, or one or more multifilament yarn(s), in particular non-thermally fused.

[0148] This arrangement allows for the formation of tear-resistant through-openings.

[0149] This arrangement also improves flexibility, breathability and enhances the display / visualization function of the main, or additional, outer, or inner textile portion, respectively.

[0150] In a first example of embodiment, the main, or additional, external textile portion does not include a through opening and the main, or additional, internal textile portion includes one or more through opening(s), in particular A and / or B, more particularly B.

[0151] Advantageously, the through opening(s) of the main, or additional, internal textile portion is / are knitted with one or more multifilament yarn(s).

[0152] In a second embodiment, the main, or additional, internal textile portion each comprises one or more textile through opening(s), in particular knitted, notably with one or more monofilamentary yarn(s) (as described in this text, for example transparent and / or translucent) or one or more multifilamentary yarn(s).

[0153] The provisions of the first and second examples above allow for advantageous improvement latear resistance of the stem since the through opening(s) arranged in the internal textile tubular element are covered by the external textile tubular element, in particular said internal textile tubular element not including a through opening.

[0154] In a second embodiment, the main, or additional, internal textile portion does not include a through opening and the main, or additional, external textile portion includes one or more through opening(s), in particular A and / or B, more particularly A.

[0155] In a third embodiment, the main, or additional, internal textile portion includes one or more through openings and the main, or additional, external textile portion includes one or more through openings, each having at least one dimension greater than at least one of the dimensions of each of the through openings of the main, or additional, internal textile portion, in particular the main, or additional, external textile portion includes one or more openings A and the main, or additional, internal textile portion includes one or more through openings B. In an alternative embodiment, the main, or additional, external textile portion includes one or more through openings that are not opposite any through openings of the main, or additional, internal textile portion.

[0156] This design helps protect the foot placed inside the shoe's cavity from, for example, rain, dust, particles, etc.

[0157] In one embodiment, the main internal and external textile portions are disposed at least in part, in particular entirely, in the midfoot region extending on the lateral side of the upper, and the internal textile tubular element further comprises an additional internal textile portion and the external textile tubular element comprises an additional external textile portion, the additional internal and external textile portions are superimposed at least in part and disposed at least in part, in particular entirely, in the midfoot region on the medial side of the upper, the additional external textile portion comprises one or more transparent and / or translucent monofilament yarn(s), in particular non-thermally fused, forming a viewing area of ​​the additional internal textile portion.

[0158] In one sub-embodiment, the upper further comprises another additional internal textile portion and another additional external textile portion which are superimposed at least in part and disposed at least in part, in particular entirely, in the forefoot region disposed between the lateral and medial sides and possibly in the forefoot region disposed on the lateral side and / or the forefoot region disposed on the medial side.

[0159] In one embodiment, the main, or additional, external textile portion includes an inner face portion and the main, or additional, internal textile portion includes an outer face portion that is not integral with the inner face portion of the main, or additional, external textile portion, in particular that is not glued to the inner face portion of the main, or additional, external textile portion, in particular that is not glued by a thermofused textile portion.

[0160] In one embodiment, the main, or additional, external textile portion comprises one or more translucent and / or transparent monofilament yarn(s), each having a trilobed cross-section, and preferably a linear mass greater than or equal to 20 denier and less than or equal to 60 denier.

[0161] The inventors determined that this arrangement makes it possible to implement said monofilament yarn on a textile machine, in particular by knitting, while offering a good compromise between rigidity and flexibility.

[0162] In addition, this type of thread adds shine.

[0163] In this text, a trilobed cross-section means that the cross-section of a monofilamentary wire includes at least three sides.

[0164] Advantageously, a trilobed cross-section has a generally triangular shape.

[0165] The present invention relates, according to a second aspect, to a method for manufacturing a shoe, in particular a sports shoe, notably according to any one of the embodiments according to a first aspect of the invention, said method advantageously comprising the steps: (i) an external textile tubular element and an internal textile tubular element are provided, of which at least one of said internal and external textile tubular elements comprises at least one heat-fusible textile portion, the external textile tubular element comprises at least one main external textile portion and the internal textile tubular element comprises at least one main internal textile portion, the internal textile tubular element is disposed at least in part in a receiving void of the foot of the external textile tubular element such that said external and internal textile tubular elements are superimposed at least in part, and that the main internal and external textile portions are superimposed at least in part, the main external textile portion comprising one or more transparent and / or translucent monofilament yarn(s), in particular having a melting temperature Tf or degradation temperature Td;(ii) the internal and external textile tubular elements are heated to a heating temperature Tc so as to melt at least partially said at least one thermofusible textile portion, in particular the temperature Tf or Td is greater than the heating temperature Tc; (iii) a rod is obtained comprising at least a portion of the external textile tubular element and at least a portion of the internal textile tubular element, at least one of said internal and external textile tubular elements comprising at least one thermofused textile portion, and said at least one main external textile portion forms a viewing zone of the main internal textile portion.

[0166] In one example, the process includes a step of attaching a sole structure to the external textile part of the sole of the external textile tubular element or to the upper obtained in step iii).

[0167] In one example, the process includes a thermoforming or thermocompression step during which one or more sole element(s) can be disposed between the inner textile part of the sole of the inner textile tubular element and the outer textile part of the sole of the outer textile tubular element or in contact with the textile part of the sole of the outer textile tubular element, in particular for bonding, more particularly by bonding with one or more thermofused textile portion(s).

[0168] The thermoforming step, particularly the heating step (ii), advantageously includes the heat-fixing of the inner and outer textile coverings, at least partially, of the foot of the inner and outer textile tubular elements to the shape of a preform generally shaped like a foot. The inner and outer textile tubular elements are held under pressure against the preform during cooling so as to conform to and retain its shape. The at least partially heat-fusible thread(s) may be bonded together.

[0169] The preform in the general shape of a foot is preferably arranged in the receiving volume of the foot of the internal textile tubular element, the textile tubular elements being superimposed at least in part.

[0170] The thermocompression step, particularly the heating step (ii), advantageously comprises arranging the inner and outer textile tubular elements, with one or more sole elements, in a mold. Preferably, an inflatable bladder (particularly made of silicone), especially one substantially shaped like a foot, is arranged within the foot cavity of the inner textile tubular element, which inner textile tubular element overlaps at least partially with the outer textile tubular element. During thermocompression, the inflatable bladder is inflated, for example, to an inflation pressure ranging from approximately 3 to approximately 6 bar, in order to compress the inner and outer textile tubular elements, and optionally the sole element(s), against the inner face of the mold. The mold may be in two or three parts.For example, two mold sections are configured to receive and mold the upper, and one mold section is configured to receive and mold the sole structure. The heating temperature during thermocompression is determined to melt and flow the targeted heat-fusible textile material(s) to a greater or lesser extent.

[0171] Indeed, the shoe may include one or more textile materials that are inherently heat-fusible, but which are not heat-melted during the shoe's manufacture. This textile material is thus considered non-heat-fusible or non-heat-melted according to the invention.

[0172] For example, the heating temperature is greater than or equal to 110°C and less than or equal to 200°C, in particular ranges from 110°C to 160°C.

[0173] An internal or external tubular textile element can be knitted on a small-diameter circular knitting machine. It can be knitted using either a picked-stitch or a dropped-stitch technique, preferably with picked-stitch.

[0174] After step (iii), the process may include a step of attaching one or more sole element(s) to the external textile part of the sole of the external textile tubular element, for example portions of rubber joined by gluing.

[0175] It is also possible to screw metal spikes into protrusions projecting from the outer face of the outer textile part of the sole of the outer textile tubular element to form cleats.

[0176] The sole element which can be placed between the internal and external textile parts of the sole and the internal and external tubular textile elements respectively is a wear sole or a cushioning element, for example having a Shore A hardness greater than 30 and less than 80.

[0177] In one variant, at least the outer textile tubular element, in particular the outer textile tubular element and the inner textile tubular element, undergoes a thermal shrinkage step before step ii).

[0178] In one variant, at least one yarn chosen from the transparent and / or translucent monofilament yarn(s) of the main external textile portion comprises one or more thermoplastic elastomer(s), in particular one or more olefinic thermoplastic elastomer(s).

[0179] In one variant, at least one yarn chosen from the transparent and / or translucent monofilament yarn(s) of the main external textile portion is selected so as to have a thermal shrinkage rate greater than or equal to 5%, preferably greater than or equal to 7%, more preferably less than or equal to 20%, preferably less than or equal to 15%.

[0180] This provision allows the thermal shrinkage of the monofilament yarn to be activated during the thermal shrinkage step which takes place before step ii) of thermoforming or thermocompression.

[0181] Advantageously, the main outer textile portion, and optionally one or more other portions of the outer and / or inner textile tubular element, is / are knitted with one or more transparent and / or translucent monofilament yarns under low tension during knitting, i.e., in a "loose" manner. Furthermore, said transparent and / or translucent monofilament yarn(s) exhibit a significant (dimensional) shrinkage rate.

[0182] Advantageously, the thermal shrinkage step allows the dimensional shrinkage (%) of the transparent and / or translucent monofilament yarn(s) to be activated, and thus to obtain an external main textile portion, and possibly in general an external textile tubular element and / or an internal textile tubular element depending on the arrangement of the transparent and / or translucent monofilament yarn(s), which has a regular knitted surface, and a shape adjusted to the preform, before step ii) of thermoforming and / or thermocompression.

[0183] Advantageously, the thermal shrinkage step includes the application of heat to at least said external textile tubular element for a determined period in order to obtain the desired dimensional shrinkage of said external textile tubular element, and optionally of said internal textile tubular element, for example includes the application of hot water (for example at 80°C) or steam, for at least 5 seconds, for example for a period of 30 seconds to 5 minutes.

[0184] The shrinkage (%) of said at least one yarn or of the external and / or internal textile tubular element(s) is evaluated by the following calculation: [(length of a zone A, taken in the weft direction or in the direction of the mesh columns, located in the main external / internal textile portion before the thermal shrinkage step; or called initial length) - (length of said zone A taken in the weft direction or of the retained mesh columns, located in the main external / internal textile portion after the thermal shrinkage step; or called activated length)] / (initial length) * 100.

[0185] Advantageously, the shrinkage measured on the transparent and / or translucent monofilament thread is greater than or equal to 5%.

[0186] Advantageously, the shrinkage measured on an area A of said external textile tubular element is greater than or equal to 5%.

[0187] The definitions, variants, examples and embodiments according to a first aspect of the invention apply independently of each other to the second aspect of the invention. Description of the drawings

[0188] The invention will be better understood upon reading the following description of embodiments of the invention given by way of non-limiting examples, with reference to the attached figures, in which: [ Fig. 1 ] there figure 1 illustrates schematically a first example of a shoe according to the invention, on which are represented the different upper regions defined in this text with reference to the shoe according to the invention; [ Fig. 2 ] there figure 2 illustrates schematically, for reference purposes in this text, the different regions that the sole structure of the shoe shown in the illustration can comprise. figure 1 ; [ Fig. 3 ]there figure 3 illustrates schematically a first example of an internal textile tubular element, in particular knitted, arranged in the receiving volume of a foot of a first example of an external textile tubular element, in particular knitted, which can be implemented in the present invention; [ Fig. 4 ] there figure 4 schematically represents a second example of an internal textile tubular element, in particular knitted, and a second example of an external textile tubular element, in particular knitted, which are of unitary textile construction, particularly in textile bonding at their foot insertion openings, and which can be implemented in the present invention; Fig. 5 ] there figure 5 schematically represents the internal tubular textile element, particularly knitted, of the figure 4 arranged in the receiving volume of the foot of the external tubular textile element, in particular knitted, of the figure 4during their implementation in the present invention; [ Fig. 6 ] there figure 6 schematically represents a second example of a shoe according to the invention; [ Fig. 7 ] there figure 7 schematically represents a third example of the arrangement of internal and external tubular textile elements according to the invention, in particular knitted elements, before their thermoforming or thermocompression; Fig. 8 ] there figure 8 schematically represents a fourth example of the arrangement of internal and external tubular textile elements according to the invention, in particular knitted elements, before their thermoforming or thermocompression; Fig. 9 ] there figure 9 schematically represents a fifth example of the arrangement of internal and external textile tubular elements according to the invention, in particular knitted ones, before their thermoforming or thermocompression; Fig. 10 ] there Figure 10schematically represents a sixth example of the arrangement of internal and external tubular textile elements according to the invention, in particular knitted ones, before their thermoforming or thermocompression, viewed from above; Fig. 11 ] there figure 11 schematically represents the internal and external tubular textile elements, particularly knitted ones, of the Figure 10 before their thermoforming or thermocompression, side view; [ Fig. 12 ] there figure 12 schematically represents a third example of a shoe according to the invention; Fig. 13 ] there figure 13 schematically represents a fourth example of a shoe according to the invention, viewed in perspective and from its medial side; Fig. 14 ] there figure 14 schematically represents the fourth example of a shoe according to the invention, viewed from its front; Fig. 15 ] there figure 15schematically represents a fifth example of a shoe according to the invention, viewed in perspective and from its lateral side; Fig. 16 ] there figure 16 schematically represents the fifth example of a shoe according to the invention seen in perspective and from its medial side. Description of the implementation methods

[0189] For the purposes of referring to the terminology used in this text and associated with a shoe, the shoe 10 represented at the figure 1 will be described below. The shoe 10 can be divided into three general regions: a forefoot region 12, a midfoot area 14 or also called midfoot 14 ; a heel or hindfoot area 16. The forefoot region 12 usually includes parts of the shoe 10corresponding to the toes and the joints connecting the metatarsals to the phalanges. The midfoot region 14 usually includes parts of the shoe 10 corresponding to the arch of the foot. The heel or hindfoot region 16 This generally corresponds to the back parts of the foot, and notably includes the calcaneus bone. The shoe 10 also includes a side 17 and a medial side 18, which extend across each of the regions of the forefoot 12, midfoot 14 and the heel 16 and correspond to the opposite sides of the shoe 10. More specifically, the lateral side 17 corresponds to an outer area of ​​the foot, and the medial side 18 corresponds to an inner area of ​​the foot. The shoe 10 includes a foot insertion opening 5allowing access to the reception (or welcoming) volume of the foot 6.

[0190] The shoe 10 includes an instep area 11 extending in a roughly central manner between the lateral side 17 and the medial side 18 in the midfoot region and possibly partially in the forefoot region 12.

[0191] The shoe 10 It also includes a longitudinal axis L and a transverse axis T, in particular substantially perpendicular to the axis L. The shoe 10 also includes a front edge 19a and a rear edge 19b. The footwear article 10 includes a stem 15 and a sole structure, including an outsole 20.

[0192] In addition to the shoe 10, the forefoot region 12, the midfoot region 14, the heel region 16,the lateral side 17, the medial side 18, the front edge 19a, the rear edge 19b, the instep area 11, the foot insertion opening 5, and the volume of the foot for accommodating or receiving 6, can be applied to the sole structure 20, to the stem 15, and to their individual elements, such as, for example, but not limited to, internal and external textile tubular elements and their respective textile foot covering parts and their respective textile sole parts.

[0193] There figure 2 schematically represents, for reference purposes, the different regions that a foundation structure can comprise 20, corresponding to the regions defined in the figure 1 .

[0194] There figure 3 schematically represents a first example of an internal tubular textile element 50and a first example of an external textile tubular element 60 distinct, each in a knitted textile piece, specifically each in a knitted sock. The internal tubular textile element 50 includes an internal textile cover 52 of the foot and a textile part of the insole 54, as well as an angled portion 56 allowing the formation of a heel area. In this specific example, the textile part covering the inside of the foot 52 It extends into the forefoot, midfoot, and heel areas, from the lateral to the medial side. In this specific example, the textile part of the insole 54 extends between a front edge and a rear edge in the forefoot, midfoot, and heel regions, and this from the lateral side to the medial side.

[0195] The external textile tubular element 60 includes an external textile covering 62of the foot and part of the external textile sole 64, as well as an angled portion 66 allowing the formation of a heel area. In this specific example, the outer textile covering of the foot 62 It extends into the forefoot, midfoot, and heel areas, between the lateral and medial sides. In this specific example, the textile part of the outsole 64 extends between the front edge and a rear edge in the forefoot, midfoot, and heel regions, and this between the lateral and medial sides.

[0196] The internal tubular textile element 50 is located in the reception area 61 of the external textile tubular element 60, They are thus substantially superimposed, at least in part. The internal tubular textile elements 50 and external 60are preferably placed on a foot-shaped preform (in particular the preform is arranged in the receiving volume of the foot of the internal tubular textile element) 50), then undergo a thermoforming or thermocompression step during which the heat-fusible textile portions of said internal textile tubular elements 50 And 60 are thermally melted in such a way as to bond the internal tubular textile element 50 to the external textile tubular element 60, and shape the whole assembly to the form of the foot-shaped preform. The internal tubular textile elements 50 and external 60 are then cooled on the preform preferably in order to solidify said form.

[0197] During the thermoforming stage, the preform is preferably rigid.

[0198] During the thermocompression stage, the preform is an inflatable bladder (particularly made of silicone or polyurethane material that can be inflated and deflated, and is therefore reusable). The heating temperature applied during the thermocompression stage is determined to melt the targeted heat-fusible material(s) more thoroughly or effectively. Thus, depending on the desired effects, threads can be bonded together and / or threads can form a film or coating, for example, covering the internal textile tube element. 50, or the external textile tubular element 60.

[0199] One or more sole elements, for example an outsole or a flexible sole element, made of a material with a Shore A hardness between 40 And 70, is / are arranged between the textile part of the insole 54 and the textile part of the outsole 64.

[0200] Preferably, the textile parts of the insole 54 and external 64 are made essentially of heat-fusible yarn(s) or each comprises at least 80% by mass of their total mass of heat-fusible yarn(s). Preferably, during the heat-compression stage, the yarn(s) of the inner and outer textile sole parts are at least partially or entirely heat-fusible. (54,64) are thermally fused. The internal and external textile tubular elements 50 And 60 Since they are preferably separate knitted pieces, they can have different configurations. For example, as shown on the figure 3 the external textile covering part of the foot 62 covers less of the foot than the inner covering part of the foot 52, in particular the external textile covering part of the foot 62It does not include the instep area and covers less of the ankle than the inner textile lining. 52.

[0201] There figure 4 schematically represents a second example of an internal tubular textile element 70 and a second example of an external textile tubular element 80 which are of unitary textile construction, particularly in a single U-shaped knitted piece. In this specific example, the internal and external tubular textile elements 70 And 80 are joined by knitted textile at the points where their foot insertion points correspond to the fold line 75 from which the internal tubular element 70 has entered the foot's reception volume 85 of the external textile tubular element 80. The internal textile tubular elements 70 and external 80knitted socks are advantageous, and each has an angled portion 72,82.

[0202] The internal and external textile tubular elements 70,80 are arranged on a foot-shaped preform (not shown), in particular the preform is arranged in the volume housing the foot of the internal tubular textile element 70. The internal textile tubular elements 70 and external 80 They then undergo a thermoforming or thermocompression stage during which heat-fusible textile portions are thermally melted to bond the internal and external tubular textile elements 70,80 between them and train them to form the preform.

[0203] The textile part of the insole 54 Or 72, and the textile part of the outsole 64 Or 82, are represented as being configured to be positioned strictly under the foot on the figures 3 to 5 In another example, depending on the configuration of the chosen sole structure, the textile part of the insole 54 Or 72, and / or the textile part of the outsole 64 Or 82, They envelop part of the top of the foot and all or part of the circumference of the foot. The thermocompression stage can be carried out as described with reference to the first examples of internal and external tubular textile elements. (50,60).

[0204] THE figures 6 to 12 The following essentially describe different examples of configurations of the internal and external textile tubular elements, in particular different configurations of the main superimposed internal and external textile portions, according to the invention.

[0205] There figure 6 schematically represents a shoe 100 including a stem 110 and a sole 120. The shoe 100includes an internal tubular textile element 130 arranged at least partially within the footprint of an external tubular textile element 140. The stem 110 includes the internal textile covering part of the foot 132 of the internal textile tubular element 130 and the external textile covering part of the foot 142 of the external textile tubular element 140.

[0206] Advantageously, the outer textile covering part of the foot 142 includes a main external textile portion 144 which extends partly into the forefoot region located between the medial and lateral sides and the forefoot regions located on the lateral and medial sides, and partly into the midfoot regions located on the medial and lateral sides. In particular, the main outer textile portion 144 does not extend into the kicking zone 102.Advantageously, the main outer textile portion 144 occupies at least 50%, preferably at least 80%, of the total surface area occupied by the forefoot and midfoot regions of the outer textile covering of the foot 142. The main outer textile portion 144 comprises, in particular, essentially transparent monofilament threads forming a substantially continuous viewing zone extending into said regions. These monofilament threads are, by way of example, transparent polyethylene terephthalate monofilament threads having a diameter of approximately 0.50 mm.

[0207] Advantageously, the main outer textile portion 144 includes through openings 146,in particular through openings A as defined above, more specifically each having at least one dimension da greater than or equal to 2 or 3 mm. Said through openings 146 are preferably knitted at the same time as the external tubular textile element 140.

[0208] Advantageously, the textile part of the inner lining of the foot 132 includes a main internal textile portion 134 partially overlapped with the main outer textile portion 144. In this example, the main internal textile portion 134 does not include a through opening. Advantageously, the internal textile covering of the foot 132 includes a main internal textile portion 134which extends at least partially into the forefoot regions located between the lateral and medial sides and on the lateral and medial sides, as well as into the midfoot regions on the lateral and medial sides. The inner textile covering of the foot 132 also extends into the instep area 102. The instep area 102 of the inner textile covering of the foot 132 thus forms part of the outer face of the stem 110. Advantageously, the main internal textile portion 134 occupies at least 50%, preferably at least 80%, of the total surface area occupied by the forefoot and midfoot regions located on the lateral and medial sides, and the forefoot region located between the lateral and medial sides, of the inner textile covering portion of the foot 132. The main internal textile portion 134, in particular its outer face 134b,is visible from the outer face 144b of the main outer textile portion 144. In particular, the color (here grey) and the textured appearance of the textile of the main internal textile portion 134 are visible from the viewing area formed by the main external textile portion 144.

[0209] There figure 7 schematically represents a third example of an internal tubular textile element 200 partially arranged within the housing volume of a foot of a third example of an external tubular textile element 250.

[0210] The external textile tubular element 250 includes an external textile covering part of the foot 260 including a main external textile portion 270consisting essentially of transparent monofilament yarns and extending partly into the forefoot and midfoot regions on the lateral and medial sides, and in the forefoot region between the lateral and medial sides, of the outer textile covering of the foot 260. The said monofilamentary wires are, in a non-limiting example, transparent polyethylene terephthalate monofilamentary wires having a diameter of approximately 0.35 mm, not intended to be heat-melted.

[0211] The internal tubular textile element 200 includes an internal textile foot covering 210 including a main internal textile portion 220 extending partly into the forefoot and midfoot regions on the lateral and medial sides, and into the forefoot region between the lateral and medial sides, of the inner textile covering part of the foot 210.

[0212] In this specific example, the main internal textile portion 210 comprises knitted meshes separated by spaces forming through-openings, in particular through-openings B as described above, more particularly each having at least one dimension on the order of approximately 1 mm or less. The main external textile portion 250 thus forms a viewing area of ​​the outer face of the first internal textile portion 210. It is possible to visualize the color, pattern(s), and knitted texture of the main internal textile portion. 210.

[0213] In this specific example, the main outer textile portion 270 does not include heat-fused yarns, so the knitted stitches are mobile relative to each other, the monofilament yarn being able to slide within said stitches. The main external textile portion270 It thus retains a certain flexibility and is breathable, allowing perspiration and heat accumulated between the main internal and external textile layers to escape. (210,270), and in the foot's reception area.

[0214] In this specific example, the main outer textile portion 270 is represented with a single type of mesh pattern (i.e., the way the threads are joined together) that is repeated across its entire surface. But, the main outer textile portion 270 may include different mesh patterns arranged in distinct areas.

[0215] In this specific example, the external textile tubular element 250 includes two games 251,252 knitted tubes 255,256 positioned respectively on either side of the instep area 210. Knitted tubes 255 positioned on the lateral side of the instep area, they cooperate with the knitted tubes.256 positioned on the medial side of the instep area to accommodate, for example, a shoelace. The knitted tubes 255,256 are of unitary knitted construction with the external tubular textile element 250 also knitted.

[0216] In this specific example, the external textile tubular element 260 includes a single main external textile portion 270. However, the external tubular textile element 260 could include one or more separate external textile additional portion(s), in particular the main external textile portion and the external textile additional portion(s) are separated from each other by one or more intermediate external textile portion(s) not comprising transparent and / or translucent monofilament yarn(s).

[0217] By way of non-limiting example, the textile part covering the outside of the foot 260includes heat-fusible knitted textile portions 262 which will be melted during the thermocompression stage, preferably mixed with non-heat-fusible knitted textile portions.

[0218] Preferably, the inner and outer textile sole parts are made up essentially of hot-melt yarn(s) which is / will be hot-melted during the thermocompression stage.

[0219] Hot melt wires are, in a non-limiting example, multifilament single-component polyurethane wires, in particular having a linear mass between 50 dtex and 80 dtex, and the number of filaments between 30 and 45 filaments.

[0220] There figure 8 schematically represents a fourth example of an internal tubular textile element 300 partially positioned within the housing volume of a foot of an external tubular textile element 350. The external textile tubular element 350includes an external textile covering part of the foot 360 including a main external textile portion 370 consisting essentially of transparent monofilament yarns and extending partly into the forefoot and midfoot regions on the lateral and medial sides, and in the forefoot region between the lateral and medial sides, of the outer textile covering of the foot 360. The said monofilamentary wires are, in a non-limiting example, transparent polyethylene terephthalate monofilamentary wires having a diameter of approximately 0.35 mm, not intended to be heat-melted.

[0221] The internal tubular textile element 300 includes a textile part for the internal lining of the foot 310 including a main internal textile portion 320arranged in the forefoot and midfoot regions on the lateral and medial sides, and in the forefoot region between the lateral and medial sides, of the inner textile covering part of the foot 320.

[0222] In this specific example, the main internal textile portion 310 includes knitted through-openings 315, in particular knitted through-openings A as described above, more specifically having at least a dimension of approximately 3-4 mm. The main external textile portion 350 This forms a viewing area for the outer face of the main internal textile portion. 310. It is possible to visualize the color, the pattern(s), the knitted texture, and the through-openings. 315 of the main internal textile portion 310.

[0223] The through openings 315of the main internal textile portion 310 allow visualization of the rod's reception volume 380, including portions of the foot. figure 9 schematically represents a fifth example of an internal tubular textile element 400 partially arranged within the footprint of a fifth example of an external tubular textile element 450. The external textile tubular element 450 includes an external textile covering part of the foot 460 including a main external textile portion 470 consisting essentially of translucent monofilament yarns and extending partly into the midfoot region on the lateral and medial sides, and in the forefoot region between the lateral and medial sides, of the outer textile covering of the foot 460.

[0224] The internal tubular textile element 400includes a textile part for the internal lining of the foot 410 including an internal textile portion 420 extending partly into the midfoot region on the lateral and medial sides, and into the forefoot region between the lateral and medial sides of the inner textile covering of the foot 410.

[0225] In this specific example, the main internal textile portion 420 includes through-holes, particularly knitted ones, especially knitted through-holes B as defined above, more particularly having at least one dimension on the order of approximately 1 mm or less. The main external textile portion 470 This forms a viewing area for the outer face of the main internal textile portion. 420. It is possible to view the color, pattern(s), and knitted texture of the main internal textile portion. 420.

[0226] In this specific example, the main outer textile portion 470 includes through openings 475 knitted A as defined above in this text, in particular having at least a dimension of about 3 to 5 mm.

[0227] Advantageously, the through openings 475 of the main outer textile portion 470 have at least one dimension greater than at least one of the dimensions of each of the through openings B of the main internal textile portion 420.

[0228] In this embodiment, the knitted through-openings are distributed in the forefoot area between the lateral and medial sides, and partially border the main outer textile portion. 470 in the midfoot regions on the lateral side and on the medial side.

[0229] For example, the textile part covering the outer foot460 includes first and second sets 462,463 through openings 476 forming lacing loops or textile bridges 477 in the instep area. A lacing loop 476 is delimited by two adjacent through openings 476 arranged transversely with respect to the longitudinal axis of the external textile tubular element 450. The through openings 476 are of unitary textile construction, particularly knitted, with the external tubular textile element 450.

[0230] On the figure 9 the main outer textile portion 470 extends in a virtually continuous manner in the forefoot and midfoot areas. The main outer textile portion 470 alternatively, it could be positioned solely in the forefoot area between the lateral and medial sides, and the external tubular textile element 450,in particular its external textile covering 460, could include a first additional external textile portion located in the midfoot region on the lateral side and a second additional external textile portion located in the midfoot region on the medial side. The main and additional external textile portions are, in this case, distinct from each other and possibly separated by one or more intermediate textile portions not comprising transparent monofilament yarn. The same alternative arrangement can be used with the internal tubular textile element. 410.

[0231] THE Figures 10 and 11 schematically represent a sixth example of an internal tubular textile element 500 partially positioned within the housing volume of a foot of an external tubular textile element 550. The external textile tubular element 550includes an external textile covering part of the foot 560 including a main external textile portion 570 consisting essentially of transparent monofilament yarns and extending partly into the forefoot, midfoot and hindfoot regions, and this on and between the lateral and medial sides, of the outer textile covering part of the foot 560.

[0232] The internal tubular textile element 500 includes a textile part for the internal lining of the foot 510 including a main internal textile portion 520 extending partly into the forefoot, midfoot and heel areas, and this on and between the lateral and medial sides of the inner textile covering of the foot 510.

[0233] In this specific example, the main internal textile portion 510includes through-holes, in particular through-holes B as defined above, more specifically having at least one dimension on the order of approximately 1 mm. The main external textile portion 550 This forms a viewing area for the outer face of the main internal textile portion. 510. It is possible to view the color, pattern(s), and texture, including knitted texture, of the main internal textile portion. 510.

[0234] In this specific example, the main outer textile portion 570 includes through openings 575, in particular through openings A as defined above, more specifically having at least one dimension of approximately 3 to 5 mm, and having at least one dimension greater than at least one of the dimensions of the through openings of the main internal textile portion 510.

[0235] In this specific example, the through openings 575 are located in the forefoot, midfoot and heel areas, and on and between the lateral and medial sides of the external textile covering of the foot 560.

[0236] Preferably, the textile parts of the insole 530 and external 580 They are made primarily of single-component, multifilament, heat-fusible yarns, particularly heat-fusible polyurethane. These yarns are therefore heat-fused onto the finished shoe.

[0237] There figure 12 schematically and partially represents a third example of a shoe according to the invention 700 including an internal tubular textile element 705 partially positioned within the housing volume of one foot of the external tubular textile element 750.

[0238] The external textile tubular element 750includes an external textile covering part of the foot 760 including a main external textile portion 770 consisting essentially of transparent monofilament threads and extending partly into the forefoot and midfoot regions; and this on and between the lateral and medial sides.

[0239] The internal tubular textile element 705 includes a textile part for the internal lining of the foot 710 including a main internal textile portion 720 also consisting essentially of transparent monofilament threads and extending partly into the forefoot and midfoot regions; and this on and between the lateral and medial sides.

[0240] The said monofilamentary wires are, in a non-limiting example, transparent polyethylene terephthalate monofilamentary wires having a diameter of approximately 0.35 mm, not intended to be heat-melted.

[0241] In this specific example, the main external and internal textile portions 720,770 may include each of the through openings according to the selected mesh schemes, in particular through openings B as defined above, more particularly having at least a dimension of 1 mm or less.

[0242] The main outer textile portion 770 forms a viewing area for the main internal textile portion 720. The main internal textile portion 720 This creates a visualization zone for the foot's accommodating volume. It is possible to see the inside of the shoe in this configuration.

[0243] THE Figures 13 And 14 schematically represent a fourth example of a shoe 800, particularly for sports, according to the invention comprising an external tubular textile element 850 and an internal tubular textile element 805folded into the space at the foot of the external tubular textile element 850.

[0244] In this example, the external textile tubular element 850 includes an external textile covering part of the foot 860, That is to say, all or part of the top of the foot, and a portion of the sole (not visible) covering all or part of the bottom of the foot. The external tubular textile element 850 includes a main external textile portion 870 knitted with a transparent monofilament yarn, said main external textile portion 870 extends partly into the forefoot and midfoot regions located on the lateral sides (810,815) and medial (820,825), and partly in the forefoot region located between the lateral and medial sides 830 of the outer textile covering of the foot 860.Said transparent monofilament wire preferably has a diameter of about 0.15 mm, and is in an olefinic thermoplastic elastomer, in particular based on propylene and ethylene, having a shrinkage rate of about 9% (shrinkage conditions tested: heating at 180°C for 2 minutes).

[0245] In this example, the internal tubular textile element 805 includes knitted through-openings 880 with one or more multifilament yarns, and arranged in the inner textile covering part of the foot 806, in particular all or part of the upper part of the foot, in the forefoot and midfoot regions located on the lateral and medial sides, and partly in the forefoot region located between the lateral and medial sides of said inner textile covering of the foot. In particular, the through openings 880have at least one dimension greater than or equal to approximately 10 mm, for example, approximately 10-12 mm. Each of the medial and lateral regions comprises seven through-openings in this specific example. These through-openings, given their size, are of type A as described in this text. The forefoot region comprises fifteen through-openings in this specific example. The textile portion 812 of the internal textile tubular element 805 covered by the main outer textile portion 870 forms the main internal textile portion.

[0246] During the upper's construction, the monofilament yarn is loosely knitted. After knitting, the internal tubular textile element 805 is positioned within the base of the external tubular textile element 850, then the internal and external textile tubular elements (805,850)These superimposed elements are arranged on a rod-shaped preform and undergo a thermal shrinkage step, specifically the application of steam for approximately 3 minutes, to activate the dimensional shrinkage of the transparent monofilament yarn. Then, the superimposed textile tubular elements undergo a thermoforming step (ii) to conform to the shape of the preform, in order to achieve the melting or softening of the heat-fusible textile components provided by the yarns, at least partially heat-fusible. The superimposed tubular elements are then allowed to cool. (805,850) on the preform to fix the shape, then the stem 890 The resulting product is assembled with a sole. 895.

[0247] In this specific example, the internal tubular textile element 805 includes a set of knitted loops 808 arranged in the instep area of ​​the stem 890, and the external tubular textile element 850includes a set of through openings 855 arranged in the instep area of ​​the stem 890 and through which the said passers-by extend 808. The loops advantageously form lacing areas for the passage of a shoelace. Advantageously, the through openings 880 are protected by the external tubular textile element 850 which covers them, in particular by the main outer textile portion 870 monofilament, transparent and abrasion-resistant. Furthermore, it allows the user to see through these openings. 880, This contributes to giving it a unique look. Advantageously, the permeability of the shoe upper 800 is improved compared to a similar shoe that does not include through-holes 880,nor monofilament yarns. The permeability of the textile complex comprising the superimposed internal and external tubular textile elements (805,850), measured in the forefoot region, is approximately 1043.8 l / m² / s, while the permeability of a comparative complex without through-openings or monofilament yarns is 439.2 m / m² / s. Permeability is determined according to ISO 9237-1995.

[0248] The through openings are thus advantageously protected from tearing, considerably improve the permeability of the shoe and therefore the evacuation of heat and perspiration, and are visible from the outside of the shoe, thus facilitating understanding of the functioning of the shoe.

[0249] Advantageously, the lengthening of the shoe's upper 800 is improved compared to a similar shoe that does not include through-holes 880,nor monofilament yarns. The elongation of the textile complex comprising the superimposed internal and external tubular textile elements (805,850) Under a force of 15 Newtons, the elongation is approximately 17.25 mm, while the elongation of a comparative fabric without through-holes or monofilament yarns is 10.8 mm. Elongation is determined in a room with a temperature of approximately 20°C ± 2°C and a relative humidity of 65% ± 4%. The test sample has a length of 150 mm and a width of 50 mm, the tensile testing machine speed is 200 mm / min, and the jaw width is 100 mm. The measured elongation corresponds to that obtained after two tensile cycles. The test can be performed on a textile tensile testing machine marketed by Instron.

[0250] Advantageously, the elongation of the rod according to the invention is advantageously improved by about 60% when monofilamentary wires, which are by definition more rigid than multifilamentary wires, are used.

[0251] THE Figures 15 and 16 schematically represent a fifth example of a shoe 900, particularly for sports, according to the invention comprising an external tubular textile element 950 and an internal tubular textile element 905 folded into the space at the foot of the external tubular textile element 950. The shoe 900 is similar to the shoe 800. The shoe 900 differs from the shoe 800 due to the lacing system, the ends of a shoelace are arranged in a loop 910 sewn onto the outer textile covering of the foot 960. Furthermore, the main external textile portion 970of the outer textile covering of the foot 960 features a contour without a notch.

[0252] In an embodiment according to the invention, and as can be seen in the different variants of the figures 7 , 8 , And 12 à 16 ; the main external textile portion, for example 970 or 970, is separated from the outer textile part of the sole of the outer textile tubular element, for example 850 or 950, by at least one textile joining portion of said external textile tubular element not comprising monofilament yarn(s), in particular transparent and / or translucent yarn(s), such as, for example, the textile joining portion 862 or 962. In particular, the textile joining portion, for example 862 or 962, borders part or almost all of the lower edge, for example 871 or 971, of the main external textile portion, for example 870 or 970.

[0253] This arrangement helps to strengthen the connection between the upper and the sole structure.

Claims

1. A shoe (100,700,800,900), in particular a sports shoe, comprising an upper (110,380), said upper (110,380) comprising at least a part (142,260,360,460,560,760) of an outer textile tubular element (60,80,140,250,350,450,550,750), and at least a part (132,210,310,410,510,710) of an inner textile tubular element (50,70,130,200,300, 400,500,705), said inner (50,70,130,200,300,400,500,705) and outer (60,80,140,250,350,450,550,750) textile tubular elements being at least partially superimposed, at least one of said inner (50,70,130,200,300,400,500,705) and outer (60,80,140,250,350,450,550,750) textile tubular elements comprises at least one hot-melted textile portion, wherein the outer textile tubular element (60,80,140,250, 350,450,550,750) comprises at least one main outer textile portion (144,270,370, 470,570,770) and the inner textile tubular element (50,70,130,200,300,400,500,705) comprises at least one main inner textile portion (134,220,320,420,520,720), in that the main outer textile portion (144,270,370,470,570,770) and the main inner textile portion (134,220,320,420,520,720) are at least partially superimposed, and in that the main outer textile portion (144,270,370,470,570,770) comprises one or more transparent and / or translucent monofilament yarn(s) forming an area of visualization of the main inner textile portion (134,220,320,420,520,720), and in that the transparent and / or translucent monofilament yarn or yarns is not / are not hot-melted.

2. The shoe (100,700,800,900) according to claim 1, characterized in that at least one yarn chosen from among the transparent and / or translucent monofilament yarn or yarns of the main outer textile portion (144,270,370,470,570,770,870,970) comprises one or more thermoplastic elastomers, in particular one or more olefinic thermoplastic elastomers.

3. The shoe (100,700,800,900) according to either one of claims 1 and 2, characterized in that at least one yarn chosen from among the transparent and / or translucent monofilament yarn or yarns of the main outer textile portion (144,270,370,470,570,770,870,970) has a diameter greater than or equal to 0.05 mm and less than or equal to 0.8 mm.

4. The shoe (100,700,800,900) according to any one of the claims 1 to 3, characterized in that said main outer textile portion (144,270,370,470,570,770,870,970), and optionally said main inner textile portion (134,220,320,420,520,720,812), is / are disposed in at least one of the following regions of the upper (110,380): a forefoot region extending over the lateral side; and / or a forefoot region extending over the medial side; a forefoot region extending between the medial and the lateral sides; a mid-foot region extending on the lateral side; and / or a mid-foot region extending on the medial side; a mid-foot region extending on the medial and lateral sides; a heel region extending over the lateral side and / or a heel region extending over the medial side; a heel region extending between the medial and lateral sides, or a combination of these latters.

5. The shoe (100,700,800,900) according to any one of the claims 1 to 4, characterized in that the outer textile tubular element (60,80,140,250,350,450,550,750,850,950) is a knitted sock comprising a foot-receiving void, and the inner textile tubular element (50,70,130,200,300,400,500,705,805,905) is a knitted sock at least partially disposed in the foot-receiving void of the outer textile tubular element (60,80,140,250,350,450,550,750).

6. The shoe (100,700,800,900) according to any one of the claims 1 to 5, characterized in that the outer textile tubular element (60,80,140,250,350,850,950) and the inner textile tubular element (50,70,130,200,300,805,905) are of unitary textile construction.

7. The shoe (100,700,800,900) according to either one of claims 5 and 6, characterized in that the foot insertion opening, or thefoot tip, , of the outer textile tubular element (80,140,250,350,450,550,750,850,950) is in textile connection with the foot insertion opening, or the foot tip, , of the inner textile tubular element (50,70,130,200,300,400,500,705,805,905).

8. The shoe (100,700,800,900) according to any one of the claims 1 to 7, characterized in that the main inner textile portion (134,220,320,420,520,720,812) does not comprise any hot-melted textile portion.

9. The shoe (100,700,800,900) according to any one of the claims 1 to 8, characterized in that the inner textile tubular element (50,70,130,200,300,400,500,705,805,905) comprises one or more hot-melted textile portions, and in that the outer textile tubular element (60,80,140,250,350,450,550,750,850,950) does not comprise any hot-melted textile portion or one or more hot-melted textile portions of a total mass less than or equal to 0.50 times the total mass of the hot-melted textile portion or portions of the inner textile tubular element (50,70,130,200,300,400, 500,705,805,905).

10. The shoe (100,700,800,900) according to any one of the claims 1 to 9, characterized in that the main outer textile portion (144,270,370,470,570,770,870,970) and / or the main inner textile portion (134,220,320,420,520,720,812) each comprises / comprise one or more textile through openings (146,315,475,575,880), in particular knitted.

11. The shoe according to claim 10, characterized in that the main outer textile portion comprises one or more through openings which is not / are not facing the through opening or openings of the main inner textile portion.

12. The shoe (100,700,800,900) according to claim 4, and optionally according to any one of the claims 1 to 3, and 5 to 11, characterized in that the main inner (134,220,320,420,520,720,812) and outer (144,270,370,470,570,770,870,970) textile portions are disposed at least partially in the midfoot region extending over the lateral side of the upper, and in that the inner textile tubular element further comprises an additional inner textile portion and the outer textile tubular element comprises an additional outer textile portion, the additional inner and outer textile portions are at least partially superimposed and disposed at least in the midfoot region on the medial side of the upper, the additional outer textile portion comprises one or more transparent and / or translucent monofilament yarns forming an area of visualization of the additional inner textile portion, in particular said transparent and / or translucent monofilament yarn or yarns of the additional outer textile portion is / are non-hot-melted.

13. The shoe (100,700,800,900) according to any one of the claims 1 to 12, characterized in that the main outer textile portion (144,270,370,470,570,770,870,970) comprises an inner face portion and the main inner textile portion (134,220,320, 420,520,720,812) comprises an outer face portion which is not secured to the inner face portion of the main outer textile portion (144,270,370,470,570,770,870,970), in particular which is not bonded to the inner face portion of the main outer textile portion (144,270,370,470,570,770,870,970).

14. The shoe (100,700) according to any one of the claims 1 to 13, characterized in that the main outer textile portion (144,270,370,470,570,770) comprises one or more transparent and / or translucent monofilament yarn(s) having a three-lobed cross-section, and preferably a linear mass density greater than or equal to 20 deniers and less than or equal to 60 deniers.

15. A method for manufacturing a shoe (100,700,800,900), in particular a sports shoe, particularly according to any one of the claims 1 to 14, wherein said method comprises the steps: i) one supplies an outer textile tubular element (60,80,140,250,350,450,550,750,850,950) and an inner textile tubular element (50,70,130,200,300,400,500,705,805,905) of which at least one of said inner (50,70,130,200,300,400,500,705,805,905) and outer (60,80,140, 250,350,450,550,750,850,950) textile tubular elements comprises at least one hot-meltable textile portion, the outer textile tubular element (60,80,140,250,350,450,550,750,850,950) comprises at least one main outer textile portion (144,270,370,470,570,770,870,970) and the inner textile tubular element (50,70,130,200,300,400,500,705,805,905) comprises at least one main inner textile portion (134,220,320,420,520,720,812), the inner textile tubular element (50,70,130,200,300,400, 500,705,805,905) is at least partially disposed in a foot-receiving void of the outer textile tubular element (60,80,140,250,350,450,550,750,850,950) such that said outer (60,80,140,250,350,450,550,750,850,950) and inner (50,70,130,200,300, 400,500,705,805,905) textile tubular elements are at least partially superimposed, and the main inner (134,220,320,420,520,720,812) and outer (144,270,370,470,570,770,870,970) textile portions are at least partially superimposed, the main outer textile portion (144,270,370,470,570,770,870,970) comprising one or more transparent and / or translucent monofilament yarns having a melting temperature Tf or degradation temperature Td; ii) one heats the inner (50,70,130,200,300,400,500,705,805,905) and outer (60,80,140,250,350,450,550,750,850,950) textile tubular elements to a heating temperature Tc such as to at least partially melt said at least one hot-meltable textile portion, the temperature Tf or Td being greater than the heating temperature Tc; iii) one obtains an upper (110,380,890) comprising at least a part (142,260,360,460,560,760,860,960) of the outer textile tubular element (60,80,140,250,350,450,550,750,850,950) and at least a part (132,210,310,410,510,710,812) of the inner textile tubular element (50,70,130,200, 300,400,500,705,805,905), at least one of said inner and outer textile tubular elements comprises at least one hot-melted textile portion, and said at least one main outer textile portion (144,270,370,470,570,770,870,970) forming an area of visualization of the main inner textile portion (134,260,320,420,520,720,812).

16. The method according to claim 15, characterized in that at least the outer textile tubular element (850,950) undergoes a step of heat-shrinking before step ii).

17. The method according to either one of claims 15 and 16, characterized in that at least one yarn chosen from among the transparent and / or translucent monofilament yarn or yarns of the main outer textile portion (870,970) is chosen so as to have a heat shrink ratio greater than or equal to 5%.