WO2021260278A1 - Tread comprising a three-dimensional spacer fabric with a protective means - Google Patents

Tread comprising a three-dimensional spacer fabric with a protective means Download PDF

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Publication number
WO2021260278A1
WO2021260278A1 PCT/FR2021/000061 FR2021000061W WO2021260278A1 WO 2021260278 A1 WO2021260278 A1 WO 2021260278A1 FR 2021000061 W FR2021000061 W FR 2021000061W WO 2021260278 A1 WO2021260278 A1 WO 2021260278A1
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WO
WIPO (PCT)
Prior art keywords
spacer fabric
tread
dimensional
spacer
fabric
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Application number
PCT/FR2021/000061
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French (fr)
Inventor
Patrick Herbault
Original Assignee
Patrick Herbault
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of WO2021260278A1 publication Critical patent/WO2021260278A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B60C11/1631—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile inclined with regard to the radial direction

Definitions

  • Tread comprising a three-dimensional 3D spacer fabric with a means of protection
  • the invention relates to the improvement of tire treads to increase the grip of the wheels of a vehicle in difficult conditions, in particular on snow-covered roads or in the rain.
  • a three-dimensional fabric can be integrated into the tread.
  • Patent EP0409120A2 describes a high strength rubber composite material with a reinforcing structure, characterized in that the reinforcing structure is a net material which impregnates the rubber material in three dimensions like a skeleton and comprises a three-dimensional shaped textile material which forms a three-dimensional mesh network.
  • the fabric as described being in the form of a net, it is a three-dimensional single-layer fabric and not a 3D spacer fabric comprising three layers (two knitted faces and a multitude of threads connecting the two knitted faces, threads that maintain a space between the knitted faces hence the name spacer) it is not a 3D spacer fabric.
  • FIG.2 illustrates a first example of a three-dimensional (T) 3D spacer fabric with fine mesh and 7.5 mm thickness. Note that in this example the stitches of the two knitted faces (M1) and (M2) are superimposed.
  • FIG.3 illustrates a second example of a three-dimensional 3D spacer fabric (T) with a wide mesh and a thickness of about 1.5 centimeters twice. Note that in this example the stitches of the two knitted faces (M1) and (M2) are staggered.
  • Patent WO2008120884A1 describes a tread comprising such a three-layer 3D spacer fabric. On the other hand, as described, there is apparently no means of protecting the filaments which connect the two faces. The solution appears to be realistic insofar as under the weight of the vehicle, the threads which allow the spacing between the two outer layers will be rapidly laminated and destroyed, in any case they will lose their initial physical characteristics.
  • the fixing of the 3D fabric relative to the tire is effected by a clamping means, the effectiveness of which is doubtful under stress with the risk that the 3D spacer fabric slips relative to the tire.
  • the tread according to the invention comprises a 3D spacer fabric which by three-dimensional structure will represent a material price, a mass and a much lower carbon footprint than a conventional conventional rubber tread and has a means protection of the threads of the 3D spacer fabric by the presence of mechanical stops.
  • this invention has the potential to save fuel and lower CO2 emissions.
  • the tread according to the invention can provide improvements in grip in difficult conditions such as on snowy roads, icy, muddy, sandy or flooded roads.
  • the tread comprises, on its outer face in contact with the ground, profiles, for example of rectangular or circular section a few millimeters high, inserted inside the three-dimensional 3D spacer fabric (T).
  • the tread has on its outer face in contact with the ground comprises pads with a height of about 1 cm and a diameter of about 5 mm uniformly distributed.
  • the manufacturing process of a tread according to the invention can use the existing three-dimensional 3D spacer fabric knitting machines, even if the specificity of the product is different, in particular 3D spacer fabrics for the mattresses.
  • the tread (BR) comprising a three-dimensional 3D spacer fabric according to the invention can advantageously be used under difficult conditions.
  • This may for example be its use on a snow-covered road, on an icy road, on a sandy road, on a flooded road.
  • It can also be used off-road in mud, on sand, on a beach, in the desert, in mountainous terrain.
  • FIG.1 is a sectional view of a conventional tire.
  • FIG.2 illustrates a first example of a three-dimensional fine-mesh 3D spacer fabric of 7.5 mm thickness.
  • FIG.3 illustrates a second example of a three-dimensional 3D spacer fabric with wide mesh and double the thickness of about 1.5 centimeters.
  • FIG.4 shows in section the combination of a three-dimensional 3D spacer fabric with round profiles inserted obliquely.
  • FIG.5 shows in section the combination of a three-dimensional 3D spacer fabric with studs.
  • FIG.6 shows a machine for knitting the three-dimensional 3D spacer fabrics.
  • Fa tread (BR) comprises a 3D spacer fabric (T) which by three-dimensional structure will represent a material price, a mass and a carbon footprint much lower than a conventional conventional rubber tread and has a means of protecting the threads of the 3D spacer fabric by the presence of mechanical stops.
  • T 3D spacer fabric
  • FIG.2 illustrates a first example of a three-dimensional (T) 3D spacer fabric with fine mesh and 7.5 mm thickness. Note that in this example the stitches of the two knitted faces (M1) and (M2) are superimposed.
  • FIG.3 illustrates a second example of a three-dimensional 3D spacer fabric (T) to wide mesh and double thickness about 1.5 centimeters. Note that in this example the stitches of the two knitted faces (M1) and (M2) are staggered.
  • a three-dimensional 3D spacer fabric (T) specifically adapted for use as a tread can still advantageously be manufactured on the same knitting machines (MT) as that of the 3D spacer fabrics already produced.
  • the outer face (FE) can also include profiles (PF) for example of rectangular or circular section a few mil limeters high to create lines of adhesion with respect to the road.
  • profiles for example of rectangular or circular section a few mil limeters high to create lines of adhesion with respect to the road.
  • PF can be positioned perpendicular to the tread on its outer face. Preferably, they are rather to be positioned obliquely like the classic design of tire structures (PN). They are also involved in the evacuation of water.
  • PF can be made of glass fiber or better still of carbon fiber, materials which have good compressive strength and a high Young's modulus greater than 50 guaranteeing high elasticity with low fluence unlike conventional materials such as nylon or polypropylene which have a Young's modulus between 1 and 5.
  • the outer face (FE) comprises studs (PF) with a height of about 1 cm and a diameter of about 5 mm uniformly distributed.
  • the height when new can be of the order of 8 to 9 mm like the treads of a tire (PN) new and be at the lower limit after wear of around 1.6 mm, similar to the legal tire wear limit (PN).
  • the meshes and the studs (PL) would be uniformly distributed in staggered rows, for example every centimeter.
  • the pads (PL) having a minimum height of 1.6 mm thus protect the three-dimensional 3D spacer fabric (T) from total crushing which could prematurely destroy the threads (F) connecting the two knitted faces (M1) and (M2) with mesh.
  • the fixing of the 3D fabric relative to the tire is effected in this case by the presence of the studs (PL) preventing the risk of the 3D spacer fabric slipping relative to the tire.
  • the studs (PL) whose bearing surface is smaller than a conventional tire (PN) can pass through the film of water to be in direct contact with the road while the three-dimensional 3D spacer fabric (T) helps to evacuate water.
  • the manufacturing process of a tread (BR) according to the invention can use the machines (MT) for knitting the existing three-dimensional 3D spacer fabrics, even if the specificity of the product is different in particular from the 3D spacer fabrics of the mattresses.
  • the tread (BR) comprising a three-dimensional 3D spacer fabric according to the invention can advantageously be used because it is used under difficult conditions.
  • This may for example be its use on a snow-covered road, on an icy road, on a sandy road, on a flooded road.
  • It can also be used off-road in mud, on sand, on a beach, in the desert, in mountainous terrain.
  • the tread comprising (BR) comprising a 3D spacer fabric relates to many types of vehicles to be used in particular when the conditions are difficult in the event of snow-covered roads, but not only.

Abstract

The invention relates to the improvement of tyre treads in order to enhance the grip of the wheels of a a vehicle in difficult conditions, in particular snowy roads or rain. The invention consists of a tread comprising a three-dimensional spacer fabric and having a means for protecting the threads of the three-dimensional spacer fabric via the presence of mechanical stops. The tread comprising a three-dimensional spacer fabric can be used in cooperation with profile sections inserted into the three-dimensional spacer fabric or with studs on which the meshes of the three-dimensional spacer fabric are positioned.

Description

Description Description
Titre de l'invention : Bande de roulement comportant un tissu espaceur 3D tridimensionnel avec un moyen de protectionTitle of the invention: Tread comprising a three-dimensional 3D spacer fabric with a means of protection
[0001 ] DOMAINE DE L'INVENTION AUQUEL SE RAPPORTE L'INVENTIONFIELD OF THE INVENTION TO WHICH THE INVENTION RELATES
[0002] L’invention concerne l’amélioration des bandes de roulement des pneumatiques pour augmenter l’adhérence des roues d’un véhicule dans des conditions difficiles notamment en cas de routes enneigées ou sous la pluie. [0002] The invention relates to the improvement of tire treads to increase the grip of the wheels of a vehicle in difficult conditions, in particular on snow-covered roads or in the rain.
ART ANTERIEUR PRIOR ART
[0003] Il existe une grande variété de bandes de roulement de pneumatiques adaptées en fonction d’utilisation. [0003] There is a wide variety of tire treads available to suit the use.
[0004] Par exemple, on peut citer le cas des pneus neige pour les routes enneigées, des pneus cloutés pour routes verglacées, des pneus polyvalents toutes saisons, des pneus plus adaptés à la pluie, des pneus lisses pour compétition sur sol sec etc. [0004] For example, we can cite the case of snow tires for snow-covered roads, studded tires for icy roads, versatile all-season tires, tires more suitable for rain, smooth tires for competition on dry ground, etc.
[0005] Ces pneus sont en contact avec le sol par leur bande de roulement usuellement en ca outchouc avec une grande gamme de choix de gommes différentes. [0005] These tires are in contact with the ground by their tread, usually in rubber with a wide range of choices of different gums.
[0006] Ceci contribue par la masse de caoutchouc au prix, à la masse et au bilan carbone de cette solution classique. This contributes by the mass of rubber to the price, to the mass and to the carbon footprint of this conventional solution.
[0007] Un tissu tridimensionnel peut être intégré à la bande de roulement. [0007] A three-dimensional fabric can be integrated into the tread.
[0008] Le brevet EP0409120A2 décrit un matériau composite de caoutchouc à haute ré sistance avec une structure de renforcement, caractérisé en ce que la structure de ren forcement est un matériau de filet qui imprègne le matériau de caoutchouc en trois di mensions comme un squelette et comprend un matériau textile de forme tridimen sionnelle qui forme un réseau tridimensionnel maillé. Pour autant le tissu tel que décrit étant sous forme d’un filet, il s’agit d’un tissu tridimensionnel monocouche et non pas un tissu espaceur 3D comportant trois couches (deux faces tricotées et une multitude de fils reliant les deux faces tricotées, fils qui maintiennent un espace entre les faces tricotées d’où le nom espaceur) il ne s’agit d’un tissu espaceur 3D. [0008] Patent EP0409120A2 describes a high strength rubber composite material with a reinforcing structure, characterized in that the reinforcing structure is a net material which impregnates the rubber material in three dimensions like a skeleton and comprises a three-dimensional shaped textile material which forms a three-dimensional mesh network. However, the fabric as described being in the form of a net, it is a three-dimensional single-layer fabric and not a 3D spacer fabric comprising three layers (two knitted faces and a multitude of threads connecting the two knitted faces, threads that maintain a space between the knitted faces hence the name spacer) it is not a 3D spacer fabric.
[0009] Il s’agit de tissus (T) composés de deux faces tricotées (Ml) et (M2) avec des mailles, les deux faces sont reliées par une multitude de fils en nylon (F). Ils sont notamment utilisés intégrés dans les matelas [0009] These are fabrics (T) composed of two knitted faces (Ml) and (M2) with stitches, the two faces are connected by a multitude of nylon threads (F). They are used in particular integrated in mattresses
[0010] La [Fig.2] illustre un premier exemple d’un tissu espaceur 3D tridimensionnel (T) à maille fines et d’épaisseur 7,5 mm. A noter que dans cet exemple les mailles des deux faces tricotées (Ml) et (M2) se superposent. [0010] [Fig.2] illustrates a first example of a three-dimensional (T) 3D spacer fabric with fine mesh and 7.5 mm thickness. Note that in this example the stitches of the two knitted faces (M1) and (M2) are superimposed.
[0011] La [Fig.3] illustre un deuxième exemple d’un tissu espaceur 3D tridimensionnel (T) à maille large et d’épaisseur double environ 1,5 centimètre. A noter que dans cet exemple les mailles des deux faces tricotées (Ml) et (M2) sont décalées en quinconce. [0012] Le brevet W02008120884A1 décrit une bande de roulement comportant un tel tissu espaceur 3D à trois couches. Par contre tel que décrit, il n’existe apparemment aucun moyen de protection des filaments qui relient les deux faces. La solution apparaît ir réaliste dans la mesure où sous le poids du véhicule, les fils qui permettent l’espacement entre les deux couches externes vont être rapidement laminés et détruits, en tout cas ils vont perdre leurs caractéristiques physiques initiales. [0011] The [Fig.3] illustrates a second example of a three-dimensional 3D spacer fabric (T) with a wide mesh and a thickness of about 1.5 centimeters twice. Note that in this example the stitches of the two knitted faces (M1) and (M2) are staggered. [0012] Patent WO2008120884A1 describes a tread comprising such a three-layer 3D spacer fabric. On the other hand, as described, there is apparently no means of protecting the filaments which connect the two faces. The solution appears to be realistic insofar as under the weight of the vehicle, the threads which allow the spacing between the two outer layers will be rapidly laminated and destroyed, in any case they will lose their initial physical characteristics.
[0013] De plus la fixation du tissu 3D par rapport au pneu s’effectue par un moyen de serrage dont on peut douter de l’efficacité sous effort avec le risque que le tissu espaceur 3D glisse par rapport au pneu. [0013] In addition, the fixing of the 3D fabric relative to the tire is effected by a clamping means, the effectiveness of which is doubtful under stress with the risk that the 3D spacer fabric slips relative to the tire.
[0014] BREVE DESCRIPTION DE L'INVENTION [0014] BRIEF DESCRIPTION OF THE INVENTION
[0015] La bande de roulement selon l’invention comporte un tissu espaceur 3D qui par structure tridimensionnelle représentera un prix matière, une masse et un bilan carbone bien plus faible qu’une bande de roulement classique en caoutchouc classique et dispose d’un moyen de protection des fils du tissu espaceur 3D par la présence de butées mécaniques. The tread according to the invention comprises a 3D spacer fabric which by three-dimensional structure will represent a material price, a mass and a much lower carbon footprint than a conventional conventional rubber tread and has a means protection of the threads of the 3D spacer fabric by the presence of mechanical stops.
[0016] De plus en raison d’une énergie dissipée plus faible dans un tissu espaceur 3D tridi mensionnel que dans du caoutchouc, cette invention présente un potentiel d’économie de carburant et de baisse d’émission de C02. [0016] In addition, due to lower dissipated energy in a three-dimensional 3D spacer fabric than in rubber, this invention has the potential to save fuel and lower CO2 emissions.
[0017] Si sur sol sec la solution classique fait référence, la bande de roulement selon l’invention peut apporter des améliorations de l’adhérence dans des conditions difficiles comme sur les routes neigeuses, les routes verglacées, boueuses, sableuse, inondées. [0017] If on dry ground the conventional solution is the benchmark, the tread according to the invention can provide improvements in grip in difficult conditions such as on snowy roads, icy, muddy, sandy or flooded roads.
[0018] Suivant un premier mode réalisation, la bande de roulement comporte sur sa face externe au contact du sol des profilés par exemple de section rectangulaire ou circulaire hauts de quelques millimètres insérés à l’intérieur du tissu espaceur 3D tridi mensionnel (T). [0018] According to a first embodiment, the tread comprises, on its outer face in contact with the ground, profiles, for example of rectangular or circular section a few millimeters high, inserted inside the three-dimensional 3D spacer fabric (T).
[0019] Ces profilés contribue à augmenter l’adhérence de la bande de roulement en étant insérés à l’intérieur du tissu espaceur 3D tridimensionnel. [0019] These profiles help to increase the grip of the tread by being inserted inside the three-dimensional 3D spacer fabric.
[0020] Suivant un deuxième mode réalisation, la bande de roulement comporte sur sa face externe au contact du sol comporte des plots d’une hauteur d’environ 1 cm et de diamètre d’environ 5 mm uniformément répartis. [0020] According to a second embodiment, the tread has on its outer face in contact with the ground comprises pads with a height of about 1 cm and a diameter of about 5 mm uniformly distributed.
[0021] Ces profilés plots contribuent à augmenter l’adhérence de la bande de roulement soit de façon indépendante soit en coopération avec du tissu espaceur 3D tridimensionnel. These stud profiles help to increase the grip of the tread either independently or in cooperation with the three-dimensional 3D spacer fabric.
[0022] Dans ce cas les mailles du tissu espaceur 3D tridimensionnel sont positionnées sur les plots. In this case the stitches of the three-dimensional 3D spacer fabric are positioned on the pads.
[0023] En termes de procédé de fabrication, le procédé de fabrication d’une bande de roulement selon l’invention peut utiliser les machines à tricoter les tissus espaceurs 3D tridimensionnels existantes, même si la spécificité du produit est différente notamment des tissus espaceurs 3D des matelas. In terms of the manufacturing process, the manufacturing process of a tread according to the invention can use the existing three-dimensional 3D spacer fabric knitting machines, even if the specificity of the product is different, in particular 3D spacer fabrics for the mattresses.
[0024] En termes d’utilisation, la bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel selon l’invention peut avantageusement être utilisée dans des conditions difficiles. In terms of use, the tread (BR) comprising a three-dimensional 3D spacer fabric according to the invention can advantageously be used under difficult conditions.
[0025] Il peut s’agir par exemple de son utilisation sur une route enneigée, sur une route verglacée, sur une route sablonneuse, sur une route inondée. [0025] This may for example be its use on a snow-covered road, on an icy road, on a sandy road, on a flooded road.
[0026] Elle peut être également utilisée en tout terrain dans la boue, sur du sable, sur une plage, dans le désert, en terrain montagneux. It can also be used off-road in mud, on sand, on a beach, in the desert, in mountainous terrain.
[0027] A noter également son intérêt quand elle est utilisée sous la pluie pour limiter l’aquaplaning. [0027] Also note its interest when it is used in the rain to limit aquaplaning.
Brève description des dessins Brief description of the drawings
[0028] D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés Other characteristics and advantages of the invention will become apparent on reading the following detailed description for the understanding of which reference is made to the accompanying drawings
[0029] [Fig.1] est une vue en coupe d’un pneumatique classique. [0029] [Fig.1] is a sectional view of a conventional tire.
[0030] [Fig.2] illustre un premier exemple d’un tissu espaceur 3D tridimensionnel à mailles fines et d’épaisseur 7,5 mm. [0030] [Fig.2] illustrates a first example of a three-dimensional fine-mesh 3D spacer fabric of 7.5 mm thickness.
[0031] [Fig.3] illustre un deuxième exemple d’un tissu espaceur 3D tridimensionnel à mailles larges et d’épaisseur double environ 1,5 centimètre. [0031] [Fig.3] illustrates a second example of a three-dimensional 3D spacer fabric with wide mesh and double the thickness of about 1.5 centimeters.
[0032] [Fig.4] montre en coupe la combinaison d’un tissu espaceur 3D tridimensionnel avec des profilés ronds insérés en oblique. [0032] [Fig.4] shows in section the combination of a three-dimensional 3D spacer fabric with round profiles inserted obliquely.
[0033] [Fig.5] montre en coupe la combinaison d’un tissu espaceur 3D tridimensionnel avec des plots. [0033] [Fig.5] shows in section the combination of a three-dimensional 3D spacer fabric with studs.
[0034] [Fig.6] montre une machine à tricoter les tissus espaceurs 3D tridimensionnels. [0034] [Fig.6] shows a machine for knitting the three-dimensional 3D spacer fabrics.
DESCRIPTION DETAILLEE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
[0035] Fa bande de roulement (BR) selon l’invention comporte un tissu espaceur 3D (T) qui par structure tridimensionnelle représentera un prix matière, une masse et un bilan carbone bien plus faible qu’une bande de roulement classique en caoutchouc classique et dispose d’un moyen de protection des fils du tissu espaceur 3D par la présence de butées mécaniques. Fa tread (BR) according to the invention comprises a 3D spacer fabric (T) which by three-dimensional structure will represent a material price, a mass and a carbon footprint much lower than a conventional conventional rubber tread and has a means of protecting the threads of the 3D spacer fabric by the presence of mechanical stops.
[0036] Il s’agit de tissus (T) composés de deux faces tricotées (Ml) et (M2) avec des mailles, les deux faces sont reliées par une multitude de fils en nylon (F). Ils sont notamment utilisés intégrés dans les matelas These are fabrics (T) composed of two knitted faces (M1) and (M2) with stitches, the two faces are connected by a multitude of nylon threads (F). They are used in particular integrated in mattresses
[0037] Fa [Fig.2] illustre un premier exemple d’un tissu espaceur 3D tridimensionnel (T) à maille fines et d’épaisseur 7,5 mm. A noter que dans cet exemple les mailles des deux faces tricotées (Ml) et (M2) se superposent. [0037] Fa [Fig.2] illustrates a first example of a three-dimensional (T) 3D spacer fabric with fine mesh and 7.5 mm thickness. Note that in this example the stitches of the two knitted faces (M1) and (M2) are superimposed.
[0038] Fa [Fig.3] illustre un deuxième exemple d’un tissu espaceur 3D tridimensionnel (T) à maille large et d’épaisseur double environ 1,5 centimètre. A noter que dans cet exemple les mailles des deux faces tricotées (Ml) et (M2) sont décalées en quinconce. Fa [Fig.3] illustrates a second example of a three-dimensional 3D spacer fabric (T) to wide mesh and double thickness about 1.5 centimeters. Note that in this example the stitches of the two knitted faces (M1) and (M2) are staggered.
[0039] Il reste possible tout en conservant la structure tridimensionnelle de tissu espaceur 3D (T) d’utiliser des matériaux plus résistants que ceux qui sont employés clas siquement pour les tissus espaceurs 3D intégrés dans les matelas. Pour les faces tricotées (Ml) et (M2) en maille on peut par exemple utiliser du polyester à haute ré sistance et pour les fils de nylon (F) les remplacer par des matériaux à module d’[0039] It remains possible while maintaining the three-dimensional structure of the 3D spacer fabric (T) to use more resistant materials than those which are conventionally used for the 3D spacer fabrics integrated into the mattresses. For the knitted faces (Ml) and (M2) in mesh one can for example use high resistance polyester and for the nylon threads (F) replace them with materials with modulus of ’
Young plus élevé de préférence en polyamides techniques. Young preferably higher in technical polyamides.
[0040] Par ailleurs pour garder une forme d’élasticité pour que le tissu espaceur 3D tridi mensionnel (T) reste extensible, il ne faut pas faire l’opération de stabilisation géo métrique par procédé thermique utilisée dans le cas des tissus espaceurs 3D intégrés dans les matelas pour garantir la conformité dimensionnelle attendue pour G utilisation dans un matelas. [0040] Furthermore, to keep a form of elasticity so that the three-dimensional 3D spacer fabric (T) remains extensible, the geometric stabilization operation by thermal process used in the case of integrated 3D spacer fabrics must not be carried out. in mattresses to ensure dimensional conformity expected for G use in a mattress.
[0041] En termes de fabrication, un tissu espaceur 3D tridimensionnel (T) spécifiquement adapté à G utilisation comme bande de roulement pourra quand même avantageusement se fabriquer sur les mêmes machines (MT) à tricoter que celle des tissus espaceurs 3D déjà produits. In terms of manufacture, a three-dimensional 3D spacer fabric (T) specifically adapted for use as a tread can still advantageously be manufactured on the same knitting machines (MT) as that of the 3D spacer fabrics already produced.
[0042] A titre d’exemple de réalisation, la face externe (FE) peut également comporter des profilés (PF) par exemple de section rectangulaire ou circulaire hauts de quelques mil limètres pour créer des lignes d’adhérence vis-à-vis de la route. As an exemplary embodiment, the outer face (FE) can also include profiles (PF) for example of rectangular or circular section a few mil limeters high to create lines of adhesion with respect to the road.
[0043] Il est privilégié de combiner la présence de ces profilés (PF) et du tissu espaceur 3D tridimensionnel (T) en les insérant à l’intérieur du tissu espaceur 3D tridimensionnel (T) par exemple en oblique à l’intérieur entre les deux faces tricotées (Ml) et (M2) au milieu des fils (F) en nylon. Ceci présente l’avantage au moment de l’écrasement du tissu espaceur 3D tridimensionnel (T) en contact avec le route d’empêcher en créant une butée mécanique par la présence des profilés (PF) de détruire les fils (F) en nylon. It is preferred to combine the presence of these profiles (PF) and the three-dimensional 3D spacer fabric (T) by inserting them inside the three-dimensional 3D spacer fabric (T) for example obliquely inside between the two sides knitted (Ml) and (M2) in the middle of the nylon threads (F). This has the advantage when the three-dimensional 3D spacer fabric (T) in contact with the road is crushed to prevent by creating a mechanical stop by the presence of the profiles (PF) from destroying the nylon threads (F).
[0044] Ces profilés (PF) peuvent être positionnés perpendiculairement à la bande de roulement sur sa face externe. De façon préférentielle, ils sont plutôt à positionner en oblique comme le dessin classique des structures de pneus (PN). Ils participent également à l’évacuation de l’eau. These profiles (PF) can be positioned perpendicular to the tread on its outer face. Preferably, they are rather to be positioned obliquely like the classic design of tire structures (PN). They are also involved in the evacuation of water.
[0045] Ces profilés (PF) peuvent être réalisés en fibre de verre ou mieux en fibre de carbone, matériaux qui ont une bonne résistance à la compression et un module d’ Young élevé supérieur à 50 garant d’une grande élasticité avec une faible fluence contrairement à des matériaux classiques tels que du nylon ou du polypropylène qui ont un module de Young entre 1 et 5. These profiles (PF) can be made of glass fiber or better still of carbon fiber, materials which have good compressive strength and a high Young's modulus greater than 50 guaranteeing high elasticity with low fluence unlike conventional materials such as nylon or polypropylene which have a Young's modulus between 1 and 5.
[0046] Selon un autre mode de réalisation, la face externe (FE) comporte des plots (PF) d’une hauteur d’environ 1 cm et de diamètre d’environ 5 mm uniformément répartis.[0046] According to another embodiment, the outer face (FE) comprises studs (PF) with a height of about 1 cm and a diameter of about 5 mm uniformly distributed.
Fa hauteur à neuf pourra être de l’ordre de 8 à 9 mm comme les sculptures d’un pneu (PN) neuf et être en limite basse après usure de l’ordre de 1,6 mm de façon analogue à la limite d’usure légale des pneus (PN). The height when new can be of the order of 8 to 9 mm like the treads of a tire (PN) new and be at the lower limit after wear of around 1.6 mm, similar to the legal tire wear limit (PN).
[0047] Dans ce cas, il est possible de combiner la présence de plots (PL) avec la présence d’un tissu espaceur 3D tridimensionnel (T) dont les mailles sont positionnées sur les plots (PL). In this case, it is possible to combine the presence of studs (PL) with the presence of a three-dimensional 3D spacer fabric (T) whose meshes are positioned on the studs (PL).
[0048] Typiquement, les mailles et les plots (PL) seraient uniformément répartis en quinconce par exemple tous les centimètres. Les plots (PL) ayant une hauteur minimale de 1.6 mm protègent ainsi le tissu espaceur 3D tridimensionnel (T) d’un écrasement total qui pourrait détruire prématurément les fils (F) reliant les deux faces tricotées (Ml) et (M2) avec des mailles. Typically, the meshes and the studs (PL) would be uniformly distributed in staggered rows, for example every centimeter. The pads (PL) having a minimum height of 1.6 mm thus protect the three-dimensional 3D spacer fabric (T) from total crushing which could prematurely destroy the threads (F) connecting the two knitted faces (M1) and (M2) with mesh.
[0049] De plus la fixation du tissu 3D par rapport au pneu s’effectue dans ce cas par la présence des plots (PL) empêchant le risque que le tissu espaceur 3D glisse par rapport au pneu. [0049] In addition, the fixing of the 3D fabric relative to the tire is effected in this case by the presence of the studs (PL) preventing the risk of the 3D spacer fabric slipping relative to the tire.
[0050] De plus, il en est attendu qu’en cas de pluie et donc de risque d’aquaplaning les plots (PL) dont la surface d’appui est plus faible qu’un pneu (PN) conventionnel puissent traverser la pellicule d’eau pour être en contact direct avec la route tandis que le tissu espaceur 3D tridimensionnel (T) contribue à l’évacuation de l’eau. In addition, it is expected that in the event of rain and therefore a risk of aquaplaning, the studs (PL) whose bearing surface is smaller than a conventional tire (PN) can pass through the film of water to be in direct contact with the road while the three-dimensional 3D spacer fabric (T) helps to evacuate water.
[0051] En termes de procédé de fabrication, le procédé de fabrication d’une bande de roulement (BR) selon l’invention peut utiliser les machines (MT) à tricoter les tissus espaceurs 3D tridimensionnels existantes, même si la spécificité du produit est différente notamment des tissus espaceurs 3D des matelas. In terms of the manufacturing process, the manufacturing process of a tread (BR) according to the invention can use the machines (MT) for knitting the existing three-dimensional 3D spacer fabrics, even if the specificity of the product is different in particular from the 3D spacer fabrics of the mattresses.
[0052] En termes d’utilisation, la bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel selon l’invention peut avantageusement utilisée fait qu’elle est utilisée dans des conditions difficiles. In terms of use, the tread (BR) comprising a three-dimensional 3D spacer fabric according to the invention can advantageously be used because it is used under difficult conditions.
[0053] Il peut s’agir par exemple de son utilisation sur une route enneigée, sur une route verglacée, sur une route sablonneuse, sur une route inondée. [0053] This may for example be its use on a snow-covered road, on an icy road, on a sandy road, on a flooded road.
[0054] Elle peut être également utilisée en tout terrain dans la boue, sur du sable, sur une plage, dans le désert, en terrain montagneux. It can also be used off-road in mud, on sand, on a beach, in the desert, in mountainous terrain.
[0055] A noter également son intérêt quand elle est utilisée sous la pluie pour limiter l’aquaplaning. [0055] Also note its interest when it is used in the rain to limit aquaplaning.
Application industrielle Industrial application
[0056] En termes d’application industrielle, la bande de roulement comportant (BR) comportant un tissu espaceur 3D concerne de nombreux types de véhicules pour être utilisée notamment quand les conditions sont difficiles en cas de routes enneigées mais pas uniquement. In terms of industrial application, the tread comprising (BR) comprising a 3D spacer fabric relates to many types of vehicles to be used in particular when the conditions are difficult in the event of snow-covered roads, but not only.
[0057] La présente invention n'est nullement limitée aux modes de réalisation décrits mais l'homme du métier saura y apporter toute variante conforme à son esprit. The present invention is in no way limited to the embodiments described but those skilled in the art will know how to make any variant in accordance with their spirit.

Claims

Revendications Claims
[Revendication 1] Bande de roulement (BR) caractérisée par le fait qu’elle comporte un tissu espaceur 3D tridimensionnel (T) et qu’elle dispose d’un moyen de protection des fils (F) par la présence de butées mécaniques. [Claim 1] Tread (BR) characterized in that it comprises a three-dimensional 3D spacer fabric (T) and that it has a means of protecting the threads (F) by the presence of mechanical stops.
[Revendication 2] Bande de roulement (BR) selon la revendication 1 caractérisée par le fait que la face externe (FE) au contact du sol comporte des profilés (PF) par exemple de section rectangulaire ou circulaire hauts de quelques mil limètres insérés à l’intérieur du tissu espaceur 3D tridimensionnel (T). [Claim 2] Tread (BR) according to claim 1 characterized in that the outer face (FE) in contact with the ground comprises profiles (PF) for example of rectangular or circular section a few miles high inserted at the top. inside of the three-dimensional 3D spacer fabric (T).
[Revendication 3] Bande de roulement (BR) selon la revendication 1 caractérisée par le fait que la face externe (FE) comporte des plots (PL) d’une hauteur d’environ 1 cm et de diamètre d’environ 5 mm uniformément répartis. [Claim 3] Tread (BR) according to claim 1 characterized in that the outer face (FE) comprises pads (PL) with a height of about 1 cm and a diameter of about 5 mm uniformly distributed .
[Revendication 4] Bande de roulement (BR) selon la revendication 3 caractérisée par le fait que la face externe (FE) comporte un tissu espaceur 3D tridimensionnel (T) dont les mailles sont positionnées sur les plots (PL). [Claim 4] Tread (BR) according to Claim 3, characterized in that the external face (FE) comprises a three-dimensional 3D spacer fabric (T) whose meshes are positioned on the pads (PL).
[Revendication 5] Procédé de fabrication d’une bande de roulement (BR) selon l’une quelconque des revendications 1 à 4 caractérisé par le fait que le procédé utilise une machine (MT) à tricoter les tissus espaceurs 3D tridi mensionnels (T). [Claim 5] A method of manufacturing a tread (BR) according to any one of claims 1 to 4, characterized in that the method uses a machine (MT) for knitting the three-dimensional 3D spacer fabrics (T) .
[Revendication 6] Utilisation d’une bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel (T) selon l’une quelconque des revendications 1 à 4 caractérisée par le fait qu’elle est utilisée en tout terrain. [Claim 6] Use of a tread (BR) comprising a three-dimensional 3D spacer fabric (T) according to any one of claims 1 to 4, characterized in that it is used in all terrain.
[Revendication 7] Utilisation d’une bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel (T) selon l’une quelconque des revendications 1 à 4 caractérisée par le fait qu’elle est utilisée sur une route enneigée. [Claim 7] Use of a tread (BR) comprising a three-dimensional 3D spacer fabric (T) according to any one of claims 1 to 4, characterized in that it is used on a snow-covered road.
[Revendication 8] Utilisation d’une bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel (T) selon l’une quelconque des revendications 1 à 4 caractérisée par le fait qu’elle est utilisée sur une route verglacée. [Claim 8] Use of a tread (BR) comprising a three-dimensional 3D spacer fabric (T) according to any one of claims 1 to 4 characterized in that it is used on an icy road.
[Revendication 9] Utilisation d’une bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel (T) selon l’une quelconque des revendications 1 à 4 caractérisé par le fait qu’elle est utilisée sur une route sablonneuse.[Claim 9] Use of a tread (BR) comprising a three-dimensional 3D spacer fabric (T) according to any one of claims 1 to 4 characterized in that it is used on a sandy road.
[Revendication 10] Utilisation d’une bande de roulement (BR) comportant un tissu espaceur 3D tridimensionnel (T) selon l’une quelconque des revendications 1 à 4 caractérisée par le fait qu’elle est utilisée sous la pluie pour limiter l’aquaplaning. [Claim 10] Use of a tread (BR) comprising a three-dimensional 3D spacer fabric (T) according to any one of claims 1 to 4, characterized in that it is used in the rain to limit aquaplaning .
PCT/FR2021/000061 2020-06-24 2021-06-18 Tread comprising a three-dimensional spacer fabric with a protective means WO2021260278A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2006606A FR3111844B1 (en) 2020-06-24 2020-06-24 Tread featuring a three-dimensional 3D spacer fabric
FRFR2006606 2020-06-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107125A1 (en) * 1982-10-22 1984-05-02 MICHELIN & CIE (Compagnie Générale des Etablissements Michelin) Société dite: Tyre crown protection layer having a three-dimensional structure
EP0409120A2 (en) 1989-07-21 1991-01-23 Hoechst Aktiengesellschaft Rubber composite material having a threedimensional reinforcing structure, and use in tyres
WO2008120884A1 (en) 2007-03-30 2008-10-09 Wook Sung Co., Ltd. Tire chain made of hard woven fabric having triple-layer structure
FR3054486A3 (en) * 2016-07-28 2018-02-02 Michelin & Cie PNEUMATIC UNDERCOAT COMPOSITE
FR3056444A1 (en) * 2016-09-27 2018-03-30 Compagnie Generale Des Etablissements Michelin NON-PNEUMATIC ELASTIC WHEEL INCORPORATING LAMINATE BASED ON SILICONE RUBBER AND FIBER-RESIN COMPOSITE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107125A1 (en) * 1982-10-22 1984-05-02 MICHELIN & CIE (Compagnie Générale des Etablissements Michelin) Société dite: Tyre crown protection layer having a three-dimensional structure
EP0409120A2 (en) 1989-07-21 1991-01-23 Hoechst Aktiengesellschaft Rubber composite material having a threedimensional reinforcing structure, and use in tyres
WO2008120884A1 (en) 2007-03-30 2008-10-09 Wook Sung Co., Ltd. Tire chain made of hard woven fabric having triple-layer structure
FR3054486A3 (en) * 2016-07-28 2018-02-02 Michelin & Cie PNEUMATIC UNDERCOAT COMPOSITE
FR3056444A1 (en) * 2016-09-27 2018-03-30 Compagnie Generale Des Etablissements Michelin NON-PNEUMATIC ELASTIC WHEEL INCORPORATING LAMINATE BASED ON SILICONE RUBBER AND FIBER-RESIN COMPOSITE

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FR3111844A1 (en) 2021-12-31

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