EP3755834A1 - Fabric having a sheet of reinforcement threads, and awning comprising said fabric - Google Patents

Fabric having a sheet of reinforcement threads, and awning comprising said fabric

Info

Publication number
EP3755834A1
EP3755834A1 EP19713095.8A EP19713095A EP3755834A1 EP 3755834 A1 EP3755834 A1 EP 3755834A1 EP 19713095 A EP19713095 A EP 19713095A EP 3755834 A1 EP3755834 A1 EP 3755834A1
Authority
EP
European Patent Office
Prior art keywords
textile
reinforcing
son
plies
winding direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19713095.8A
Other languages
German (de)
French (fr)
Inventor
Carlos Saiz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Serge Ferrari SAS
Original Assignee
Serge Ferrari SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Serge Ferrari SAS filed Critical Serge Ferrari SAS
Publication of EP3755834A1 publication Critical patent/EP3755834A1/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0112—One smooth surface, e.g. laminated or coated
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/012—Alike front and back faces
    • D10B2403/0122—Smooth surfaces, e.g. laminated or coated
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/18—Outdoor fabrics, e.g. tents, tarpaulins

Definitions

  • the present invention relates to a textile intended to be stretched and rollable on itself.
  • the present invention relates to the field of textiles intended to be deployed on demand, to protect an area of the sun's rays, for example.
  • such textiles are preferentially tense.
  • the present invention is of particular interest in textiles made for awnings.
  • the devices generally designated by the term “banne” are devices intended to be reported on a facade or a wall and to achieve a shaded area by means of a stretched textile. These devices form a shelter allowing, in particular, individuals to protect themselves from direct sunlight.
  • an awning has a textile deployed on demand that can be wound on itself so as to protect the textile if the weather conditions such as, in particular, wind, rain, snow or hail, require .
  • the textile is wound around a rotary axis integral with the facade on which the banne is reported and a load profile is arranged movable relative to the facade to allow to deploy or retract the textile if necessary.
  • the awnings existing to date are equipped with a textile that tends to sag in its central part. This sagging results in an arrow visible in the textile. This phenomenon is all the more important as the textile is wide and long.
  • the Applicant has developed a textile comprising a support and at least two layers of reinforcing threads.
  • Textiles comprising sheets of reinforcing threads are known.
  • US Pat. No. 4,518,640 discloses a multiaxial reinforcement composed by the superposition of layers of reinforcing threads held together by a knit stitch or a chain stitch. This multiaxial reinforcement is rigid so as to reinforce mechanical parts for example, thus, it is not rollable on itself.
  • PCT application WO 02/090644 discloses a coated textile.
  • This textile comprises a multiaxial textile core comprising plies of reinforcement son of metal, especially steel, to prevent laceration of the textile after coating with a knife such as a knife.
  • This textile core is coated with a thermoplastic such as PVC.
  • PVC thermoplastic
  • the invention relates to a textile, comprising two parallel strips, rollable on itself in at least one winding direction parallel or perpendicular to said parallel edges, intended to be stretched, comprising a support layer, said support layer having a face location and a back face, characterized in that it comprises at least two superimposed layers, namely a first ply and a second ply, made of reinforcing threads, said plies being positioned on said back face, said reinforcement threads forming angles between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction.
  • the invention also relates to an awning comprising a textile as described above.
  • An advantage of the invention is that the textile can be wound on itself without generating a fold.
  • An advantage of the invention when the textile is stretched, is the sharp decrease of the textile boom relative to a textile containing no reinforcing son.
  • Another advantage of the invention is that, in its use in a awning, the stresses due to the winding of the textile are distributed over the entire textile, which facilitates its winding and deployment.
  • An additional advantage of the invention is the regularity of the winding, so there is less wear, which leads to a better preservation of the aesthetic quality of the textile.
  • the textile according to the invention comprises a support layer.
  • this support layer may be a fabric, a nonwoven, a grid or a film.
  • the support according to the invention has a dimensional strength.
  • the support itself is rollable on itself even in the absence of reinforcing son plies.
  • the plies of reinforcement son are integrated so as to increase the resistance to the elongation of the support in preferred directions.
  • the plies of reinforcing threads serve to limit the bending phenomenon of the support and to distribute the forces exerted on it during its winding, the support therefore having an intrinsic dimensional strength.
  • the textile according to the invention has a face and a face face.
  • the face-face corresponds to the face of the support which is not covered by the plies of reinforcing threads and the face-up corresponds to the face of the support which is covered by the plies of reinforcing threads.
  • the face is intended to be positioned towards the sky and the face towards the ground.
  • the people sheltered under the awning have the reinforcement son in visual on the reverse face.
  • the textile according to the invention comprises two parallel selvedges and is rollable on itself in at least one direction of winding parallel or perpendicular to said parallel edges.
  • the winding direction of the textile is directed towards the facade or the wall.
  • the winding direction corresponds to the direction perpendicular to the winding axis.
  • this winding axis is both perpendicular to two edges parallel and parallel to the other two parallel edges.
  • the fabric made is rectangular in shape and wound on itself in a direction parallel to the two edges representing the lengths of the rectangle and perpendicular to the two edges representing the widths of the rectangle.
  • the textile comprises at least two superimposed plies, namely a first ply and a second ply, made of reinforcing threads, said plies being positioned on said reverse face.
  • the plies made of reinforcing son are advantageously sewn or glued to the support layer. Said sheets can be secured individually or globally.
  • sewing or gluing can be done in two ways.
  • the joining of the plies with the support layer is done after the deposition of each of the plies, that is to say that said second ply is positioned after said first ply has been secured to said support layer.
  • the two plies are positioned on said support layer before the stitching or jointing step.
  • the reinforcing threads may be joined or not joined.
  • Joining means the case where a reinforcement wire has at least one point of physical contact with at least one other reinforcing thread.
  • the amount of reinforcing son is greater than when the reinforcing son are not all contiguous.
  • the stresses are distributed over the entire fabric which decreases the force exerted on each of the reinforcing threads.
  • the weight of the textile is greater than in the case where the reinforcing threads are not all joined.
  • the weight of the textile according to the invention can be optimized according to the positioning and the strength of the reinforcing threads. Indeed, more reinforcement son have a high title, less son are necessary to ensure the technical effect. Thus, the higher the strength of the reinforcing threads, the greater the distance between two reinforcing threads for the same decrease in deflection and the same distribution of forces exerted during winding.
  • the reinforcing yarns have a titer of between 50 dtex and 1200 dtex, advantageously between 150 dtex and 900 dtex and even more advantageously between 250 dtex and 550 dtex.
  • the same sheet consists of groups remote or spaced son joined reinforcements.
  • the plies may consist of groups of son of separate reinforcements, each group comprising for example two or three reinforcing son and are separated from each other. This is advantageous because during the winding of the textile, the forces exerted locally are distributed over the son of the same group and the weight of the textile is reduced compared to the case where all the son of reinforcements are joined. Moreover, this characteristic makes it possible to limit the number of operations for removing the reinforcing threads.
  • the overall weight of the textile increases with the number of reinforcement son.
  • the use of plies in which the reinforcing threads are not all joined reduces the overall weight of the textile.
  • son of lower mass may be used when positioned in groups and said groups may be spaced apart from each other.
  • the reinforcing threads have a title of between 280dtex and 550dtex.
  • the textile according to the invention is advantageously coated on said face and / or on said reverse face.
  • the material used to coat the textile is a polyurethane, an acrylic or a PVC, in the form of plastisol, for example.
  • the coating layer is advantageously deposited on the textile after the positioning of said reinforcement son. This is advantageous because in the case where the reinforcing son are sewn holes are generated in the support layer and the coating layer closes these holes.
  • a coating on the back side also makes it possible to block the reinforcing threads on the support, and to improve the tensioning of the support when the reinforcing threads are stretched.
  • the textile is coated on the back side after the positioning of the reinforcing son plies, then coated a second time on at least one of the faces facing and place as described above.
  • the first coating makes it possible to ensure good coating of the plies of reinforcing threads.
  • the first coating is advantageously carried out with polyurethane.
  • said reinforcing son form angles between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction.
  • the shape of the support, and therefore of the textile, can be varied.
  • said support is of rectangular or trapezoidal shape.
  • the textile is rectangular in shape.
  • the textile is wound in a winding direction parallel to the width of the rectangle, and therefore perpendicular to the lengths of said rectangle.
  • the Applicant has noticed that it is advantageous to position the reinforcing son so that a reinforcing wire or a group of reinforcing wire is positioned along the two diagonals of said rectangle.
  • the textile further comprises two plies of additional reinforcing threads, namely a third ply and a fourth ply, said reinforcing threads forming angles (as to 4 ) of between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction.
  • This particular embodiment is advantageous because it makes it possible to distribute the stresses exerted on the reinforcing threads during the winding of the textile according to the invention as a function of the progress of the winding process. Indeed, in the case where the textile is rectangular in shape, the lengths have the same dimension during the winding process, while the widths decrease. Thus, the diagonal of the textile rectangle remaining to be wound has an angle that changes linearly with the winding of the textile. The optimal angle of theoretical positioning of the reinforcing threads also evolves.
  • the textile is trapezoidal in shape.
  • the winding direction is perpendicular to said parallel edges, which form the small and large base of the trapezium, and, for practical reasons, the winding axis is located on the side of the largest edge between said two parallel edges, in other words on the side of the large base of the trapezium.
  • the Applicant has noticed that it is advantageous to position the reinforcing son so that a part is parallel to one of the sides of the trapezium connecting the bases and another part is parallel to the other side of the trapeze connecting the bases.
  • the layers of reinforcing threads have a density of reinforcement son different from one sheet to another. This is advantageous because, in the case where the textile is incorporated in a awning, the effort required to wind the textile on itself depends on the state of progress of the winding process. Thus, the density of reinforcement son on each sheet can be adapted according to the stresses exerted on the textile.
  • said plies comprise, independently, between 2 and 8 reinforcement threads per cm.
  • the invention also relates to an awning comprising at least one textile as described above.
  • the awning comprises at least two textiles as described above
  • said textiles are advantageously assembled at rabbet level by welding and calendering. This is advantageous because no extra thickness is generated at the level of the assembly zone of the textiles, it is known that the extra thicknesses generate tension on the textile edge assembly areas, which causes folds and can engender the aforementioned problems.
  • Figure 1 is a perspective view of a textile according to one aspect of the invention
  • Figures 2 to 4 are top views of textiles according to three particular cases of the invention
  • Figures 5a and 5b are cross sections of the assembly zone of two textiles according to the invention having a rabbet, respectively shown before and after assembly.
  • the dimensions and the proportions of the elements illustrated in FIGS. 1 to 5b could have been exaggerated with respect to reality, and were given only in order to facilitate understanding of the invention.
  • the arrow indicates the winding direction of the textile according to the invention.
  • the textile according to one aspect of the invention comprises a support 5, a ply consisting of reinforcing threads 1 and a second ply consisting of reinforcing threads 2.
  • the sheet constituted by the reinforcing threads 1 is positioned on the support layer 5 and the sheet constituted by the reinforcing threads 2 is positioned on the sheet containing the reinforcing threads 1.
  • the reinforcing threads are positioned in a plane manner.
  • the reinforcing threads 1 define the plane of the first ply and the reinforcing threads 2 define the plane of the second ply.
  • the textile shown in FIG. 1 comprises three distinct and parallel planes, a first plane represented by the support layer, a second plane represented by the first ply constituted by the reinforcing threads 1 and a third plane represented by the second web made of reinforcing threads 2.
  • the reinforcing son 1 and 2 have no embossing. This has the effect that as soon as a stress is exerted on them, the reinforcement son are already rectilinear and immediately transmit their traction.
  • FIG 2 is a top view of the textile according to Figure 1 on which son of seams 6 have been shown.
  • the reinforcing son 1 form an angle ai with the winding direction of the textile this angle ai is between 5 ° and 85 °.
  • the reinforcing son 2 form an angle ⁇ 2 which is symmetrical with the angle ⁇ with respect to the winding direction.
  • the fact that the angles ai and a 2 are symmetrical makes it possible to evenly distribute the stresses on the fabric when it is stretched or in the winding phase.
  • the seaming threads 6 make it possible to secure the plies made of reinforcing threads with the support layer. As shown in FIG. 2, the seaming threads were sewn after the positioning of the second ply constituted by the reinforcing threads 2.
  • the plies made of reinforcing son can be glued and not sewn, or sewn one by one.
  • FIG. 3 presents four plies of reinforcing threads.
  • the reinforcing son 1 and the reinforcing son 2 respectively form an angle ⁇ 1 and an angle ⁇ 2 with the winding direction of the textile.
  • reinforcing son 4 are positioned above the second sheet of reinforcing son.
  • the reinforcing threads 3 form an angle a 3 with the winding direction and the reinforcing threads
  • the different plies are in distinct and parallel planes.
  • the advantage of the reinforcing son 3 and 4 is to optimize the distribution of forces exerted on the reinforcing son. To do this, the reinforcing son 3 form an angle a 3 which is larger than the angle ai. Similarly, and because the angles ai and a 2 on the one hand and the angles a 3 and a 4 on the other hand are symmetrical with each other, the angle a 4 is greater than the angle a 2 .
  • the reinforcing son are inclined to be parallel to the sides of the trapezium connecting the bases. This makes it possible to maintain a tension of the lateral zones of the trapezium when the tension is exerted by the load bar, which is shorter than the large base of the trapezium.
  • the textile When the textile is not wide enough to be used alone, it is possible to assemble several textiles. To do this, advantageously, the textiles are joined by rebate, as shown in Figures 5a and 5b so as not to generate extra thickness at the assembly area.
  • two textiles 7 and 8 are assembled. Textiles 7 and 8 have at at least one of their selvedges a projecting portion 71, 81 over part of its thickness, on the side of the back side or the side of the face side ( Figure 5 a).
  • the superposition of the projecting portions 71 and 81 make it possible to provide continuity between the textiles 7 and 8 (FIG. 5b).
  • the protruding portion 71 is complementary to the projecting portion 81 in the thickness of the textiles 7 and 8.
  • the projecting portion 71 of the textile 7 comprises the textile core 72 of the textile 7 and the projecting portion 81 of the textile 8 does not include the textile core 82 of the textile 8.
  • the projecting portion 71 has a thickness equal to about 2/3 of the thickness of the textile 7 and the projecting portion 81 has a thickness equal to about 1/3 of the thickness of the textile 8.
  • the two textiles 7 and 8 are assembled by superimposing their projections 71, 81 so as to match the faces of the faces and faces of textiles 7 and 8 ( Figure 5b). In practice, once the projecting portions 71, 81 superimposed, the two textiles 7 and 8 are welded together.
  • the projections 71, 81 of the textiles 7 and 8 can be obtained in different ways.
  • the projecting parts 71, 81 are obtained by the non-deposition of a layer present on the rest of the surface of the sheet.
  • several elementary layers are deposited successively.
  • One or more of these elementary layers may be absent in the characteristic strip areas.
  • masks can be reported on the coating machine so as to prevent the liquid PVC of some of these elementary layers comes to be deposited in this area, to thereby achieve a strip whose coating layer is of lesser thickness relative to the rest of the surface.
  • the projections 71, 81 are obtained by trimming a portion of a coating layer present on the surface of the sheet. This operation makes it possible to mechanically remove a portion of the coating layer on one or more strips.
  • the portion of the textile fabric 8 that is not coated on one of these faces is removed by cutting.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Building Awnings And Sunshades (AREA)
  • Tents Or Canopies (AREA)

Abstract

The invention relates to a fabric which comprises two parallel selvages, can be wound onto itself in at least one winding direction running parallel or perpendicular to said parallel selvages, is to be kept taut and comprises a support layer (5) that has a front face and a rear face, characterized in that the fabric includes at least two sheets, i.e. a first sheet and a second sheet, one of which is arranged on top of the other and which consist of reinforcement threads (1, 2), said sheets being arranged on the rear face, the reinforcement threads (1, 2) extending at angles (α1, α2) of 5 to 85° relative to the winding direction, said angles (α1, α2) being symmetrical in relation to the winding direction.

Description

TEXTILE AVEC NAPPE DE FILS DE RENFORT  TEXTILE WITH REINFORCING WIRE
DOMAINE DE L’INVENTION FIELD OF THE INVENTION
La présente invention concerne un textile destiné à être tendu et enroulable sur lui-même. En particulier, la présente invention concerne le domaine des textiles destinés à être déployés à la demande, pour protéger une zone des rayons du soleil par exemple. Pour des raisons mécaniques et esthétiques, de tels textiles sont préférentiellement tendus. Plus précisément, la présente invention présente un intérêt particulier dans les textiles confectionnés pour les stores banne. The present invention relates to a textile intended to be stretched and rollable on itself. In particular, the present invention relates to the field of textiles intended to be deployed on demand, to protect an area of the sun's rays, for example. For mechanical and aesthetic reasons, such textiles are preferentially tense. More specifically, the present invention is of particular interest in textiles made for awnings.
ETAT ANTERIEUR DE LA TECHNIQUE PRIOR STATE OF THE TECHNIQUE
Les dispositifs généralement désignés par le terme de « banne » sont des dispositifs destinés à être rapportés sur une façade ou un mur et permettant de réaliser une zone ombragée au moyen d’un textile tendu. Ces dispositifs forment un abri permettant, notamment, à des individus de se protéger des rayonnements directs du soleil. The devices generally designated by the term "banne" are devices intended to be reported on a facade or a wall and to achieve a shaded area by means of a stretched textile. These devices form a shelter allowing, in particular, individuals to protect themselves from direct sunlight.
Plus particulièrement, un store banne présente un textile déployé à la demande pouvant être enroulé sur lui-même de façon à protéger le textile si les conditions climatiques telles que, notamment, le vent, la pluie, la neige ou la grêle, l’exigent. Pour ce faire, le textile est enroulé autour d’un axe rotatif solidaire de la façade sur laquelle la banne est rapportée et un profilé de charge est agencé mobile par rapport à la façade pour permettre de déployer ou de rétracter le textile si nécessaire. More particularly, an awning has a textile deployed on demand that can be wound on itself so as to protect the textile if the weather conditions such as, in particular, wind, rain, snow or hail, require . To do this, the textile is wound around a rotary axis integral with the facade on which the banne is reported and a load profile is arranged movable relative to the facade to allow to deploy or retract the textile if necessary.
De façon générale, il est connu de déployer et de tendre un textile au moyen d’un profilé de charge mobile en translation en restant parallèle par rapport à la façade. De tels profilés sont par ailleurs soutenus par des bras qui peuvent être articulés ou télescopiques notamment, et qui permettent de maintenir le profilé de charge à une hauteur prédéterminée. In general, it is known to deploy and stretch a textile by means of a load profile movable in translation while remaining parallel to the facade. Such profiles are also supported by arms which can be articulated or telescopic in particular, and which maintain the load profile at a predetermined height.
Les deux extrémités libres du textile sont alors respectivement solidarisées à l’axe rotatif, d’une part, et au profilé de charge, d’autre part. Cependant, les stores bannes existants à ce jour sont équipés d’un textile qui a tendance à s’affaisser en sa partie centrale. Cet affaissement se traduit par une flèche visible au niveau du textile. Ce phénomène est d’autant plus important que le textile est large et long. The two free ends of the textile are then respectively secured to the rotary axis, on the one hand, and to the load profile, on the other hand. However, the awnings existing to date are equipped with a textile that tends to sag in its central part. This sagging results in an arrow visible in the textile. This phenomenon is all the more important as the textile is wide and long.
Ceci est préjudiciable, car le textile n’est pas parfaitement tendu, ce qui gêne l’opération d’enroulage de celui-ci et génère des plis disgracieux lorsque le textile est déployé à nouveau. Ces plis disgracieux entraînent entre autres des surépaisseurs lorsque le textile est enroulé ce qui peut conduire à des phénomènes de frottement qui usent le textile. Ce phénomène peut conduire, en particulier à une perte d’étanchéité du textile ce qui le rend impropre à son utilisation. This is detrimental because the textile is not perfectly stretched, which hampers the winding operation thereof and generates unsightly folds when the textile is deployed again. These unsightly folds entail, among other things, extra thicknesses when the textile is wound, which can lead to friction phenomena which wear out the textile. This phenomenon can lead, in particular to a loss of tightness of the textile which makes it unfit for its use.
Il existe donc un besoin d’obtenir un textile qui puisse s’enrouler sans générer de pli autour d’un axe d’enroulement de store banne. There is therefore a need to obtain a textile that can be wound without generating a fold around an awning winding axis.
Afin de répondre à ce besoin, le Demandeur a mis au point un textile comprenant un support et au moins deux nappes de fils de renfort. In order to meet this need, the Applicant has developed a textile comprising a support and at least two layers of reinforcing threads.
On connaît des textiles comprenant des nappes de fils de renfort. Par exemple, le brevet américain US 4 518 640 divulgue un renfort multiaxial composé par la superposition de nappes de fils de renfort maintenues entre elles par un point de tricot ou un point de chaînette. Ce renfort multiaxial est rigide de sorte à renforcer des pièces mécaniques par exemple, ainsi, il n’est pas enroulable sur lui-même. Textiles comprising sheets of reinforcing threads are known. For example, US Pat. No. 4,518,640 discloses a multiaxial reinforcement composed by the superposition of layers of reinforcing threads held together by a knit stitch or a chain stitch. This multiaxial reinforcement is rigid so as to reinforce mechanical parts for example, thus, it is not rollable on itself.
Egalement, la demande PCT WO 02/ 090644 divulgue un textile enduit. Ce textile comporte une âme textile multiaxiale comprenant des nappes de fils de renfort en métal, notamment en acier, pour empêcher la lacération du textile après enduction avec une arme blanche telle qu’un couteau. Cette âme textile est enduite d’un thermoplastique tel que le PVC. Cette âme ne présente pas une tenue dimensionnelle en tant que telle, cette dernière est obtenue après enduction. En d’autres termes, avant enduction, l’âme textile ne présente pas une résistance à l’allongement dans diverses directions sans que les fils composants la ou les nappe(s) ne se séparent. EXPOSE DE L’INVENTION Also, PCT application WO 02/090644 discloses a coated textile. This textile comprises a multiaxial textile core comprising plies of reinforcement son of metal, especially steel, to prevent laceration of the textile after coating with a knife such as a knife. This textile core is coated with a thermoplastic such as PVC. This soul does not have a dimensional behavior as such, the latter is obtained after coating. In other words, before coating, the textile core does not have resistance to elongation in various directions without the son component or the sheet (s) are separated. SUMMARY OF THE INVENTION
Ainsi, l’invention concerne un textile, comportant deux lisières parallèles, enroulable sur lui-même selon au moins une direction d’enroulement parallèle ou perpendiculaire auxdites lisières parallèles, destiné à être tendu, comprenant une couche support, ladite couche support présentant une face endroit et une face envers, caractérisé en ce qu’il comporte au moins deux nappes superposées, à savoir une première nappe et une seconde nappe, constituées de fils de renfort, lesdites nappes étant positionnées sur ladite face envers, lesdits fils de renforts formant des angles compris entre 5° et 85° avec ladite direction d’enroulement, lesdits angles étant symétriques par rapport à ladite direction d’enroulement. Thus, the invention relates to a textile, comprising two parallel strips, rollable on itself in at least one winding direction parallel or perpendicular to said parallel edges, intended to be stretched, comprising a support layer, said support layer having a face location and a back face, characterized in that it comprises at least two superimposed layers, namely a first ply and a second ply, made of reinforcing threads, said plies being positioned on said back face, said reinforcement threads forming angles between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction.
L’invention concerne également un store banne comprenant un textile tel que décrit ci- dessus. The invention also relates to an awning comprising a textile as described above.
Un avantage de l’invention est que le textile peut s’enrouler sur lui-même sans générer de pli. An advantage of the invention is that the textile can be wound on itself without generating a fold.
Un avantage de l’invention, lorsque le textile est tendu, est la forte diminution de la flèche du textile par rapport à un textile ne contenant pas de fils de renfort. An advantage of the invention, when the textile is stretched, is the sharp decrease of the textile boom relative to a textile containing no reinforcing son.
Un autre avantage de l’invention est que, dans son utilisation dans un store banne, les contraintes dues à l’enroulement du textile sont réparties sur l’ensemble du textile, ce qui facilite son enroulement et son déploiement. Another advantage of the invention is that, in its use in a awning, the stresses due to the winding of the textile are distributed over the entire textile, which facilitates its winding and deployment.
Un avantage supplémentaire de l’invention est la régularité de l’enroulement, il y a donc moins d’usure, ce qui conduit à une meilleure conservation de la qualité esthétique du textile. An additional advantage of the invention is the regularity of the winding, so there is less wear, which leads to a better preservation of the aesthetic quality of the textile.
Le textile selon l’invention, comprend une couche support. En pratique, de manière avantageuse, cette couche support peut être un tissu, un non tissé, une grille ou un film. Le support selon l’invention présente une tenue dimensionnelle. En particulier, le support en tant que tel est enroulable sur lui-même même en l’absence de nappes de fils de renfort. En effet, les nappes de fils de renfort sont intégrées de sorte à augmenter la résistance à l’allongement du support dans des directions privilégiées. Autrement dit, dans la présente invention, les nappes de fils de renfort servent à limiter le phénomène de flèche du support et à répartir les forces exercées sur celui-ci lors de son enroulement, le support présentant donc une tenue dimensionnelle intrinsèque. The textile according to the invention comprises a support layer. In practice, advantageously, this support layer may be a fabric, a nonwoven, a grid or a film. The support according to the invention has a dimensional strength. In particular, the support itself is rollable on itself even in the absence of reinforcing son plies. In indeed, the plies of reinforcement son are integrated so as to increase the resistance to the elongation of the support in preferred directions. In other words, in the present invention, the plies of reinforcing threads serve to limit the bending phenomenon of the support and to distribute the forces exerted on it during its winding, the support therefore having an intrinsic dimensional strength.
Par ailleurs, le textile selon l’invention présente une face endroit et une face envers. Dans la suite de la description, la face endroit correspond à la face du support qui n’est pas recouverte par les nappes de fils de renfort et la face envers correspond à la face du support qui est recouvert par les nappes de fils de renfort. Dans le cas particulier où le textile est incorporé dans un store banne, la face endroit est destinée à être positionnée vers le ciel et la face envers vers le sol. Ainsi, les personnes abritées sous le store banne ont les fils de renfort en visuel sur la face envers. Furthermore, the textile according to the invention has a face and a face face. In the remainder of the description, the face-face corresponds to the face of the support which is not covered by the plies of reinforcing threads and the face-up corresponds to the face of the support which is covered by the plies of reinforcing threads. In the particular case where the textile is incorporated in a awning, the face is intended to be positioned towards the sky and the face towards the ground. Thus, the people sheltered under the awning have the reinforcement son in visual on the reverse face.
De manière générale, le textile selon l’invention comporte deux lisières parallèles et est enroulable sur lui-même selon au moins une direction d’enroulement parallèle ou perpendiculaire auxdites lisières parallèles. Dans le cas particulier où le textile est incorporé dans un store banne, la direction d’enroulement du textile est dirigée vers la façade ou le mur. In general, the textile according to the invention comprises two parallel selvedges and is rollable on itself in at least one direction of winding parallel or perpendicular to said parallel edges. In the particular case where the textile is incorporated in a awning, the winding direction of the textile is directed towards the facade or the wall.
En d’autres termes, dans le cas particulier où le textile est incorporé dans un store banne, la direction d’enroulement correspond à la direction perpendiculaire à l’axe d’enroulement. Bien entendu, dans le cas où le textile est de forme rectangulaire, cet axe d’enroulement est à la fois perpendiculaire à deux lisières parallèles et parallèles aux deux autres lisières parallèles. De manière générale, en sortie de production, le textile confectionné est de forme rectangulaire et enroulé sur lui-même selon une direction parallèle aux deux lisières représentant les longueurs du rectangle et perpendiculaire aux deux lisières représentant les largeurs du rectangle. In other words, in the particular case where the textile is incorporated in an awning, the winding direction corresponds to the direction perpendicular to the winding axis. Of course, in the case where the textile is rectangular in shape, this winding axis is both perpendicular to two edges parallel and parallel to the other two parallel edges. In general, at the output of production, the fabric made is rectangular in shape and wound on itself in a direction parallel to the two edges representing the lengths of the rectangle and perpendicular to the two edges representing the widths of the rectangle.
Conformément à l’invention, le textile comporte au moins deux nappes superposées, à savoir une première nappe et une seconde nappe, constituées de fils de renfort, lesdites nappes étant positionnées sur ladite face envers. De manière à solidariser les fils de renforts et la couche support, les nappes constituées de fils de renfort sont avantageusement cousues ou collées à la couche support. Lesdites nappes peuvent être solidarisées de manière individuelle ou bien de manière globale. According to the invention, the textile comprises at least two superimposed plies, namely a first ply and a second ply, made of reinforcing threads, said plies being positioned on said reverse face. In order to secure the reinforcing son and the support layer, the plies made of reinforcing son are advantageously sewn or glued to the support layer. Said sheets can be secured individually or globally.
En d’autres termes, lors de la confection du textile, la couture ou le collage peut se faire de deux manières. Dans un cas, la solidarisation des nappes avec la couche support se fait après le dépôt de chacune des nappes, c’est-à-dire que ladite seconde nappe est positionnée après que ladite première nappe ait été solidarisée à ladite couche support. Dans le deuxième cas, les deux nappes sont positionnées sur ladite couche support avant l’étape de couture ou de collage conjointe. In other words, when making the textile, sewing or gluing can be done in two ways. In one case, the joining of the plies with the support layer is done after the deposition of each of the plies, that is to say that said second ply is positioned after said first ply has been secured to said support layer. In the second case, the two plies are positioned on said support layer before the stitching or jointing step.
Les fils de renfort peuvent être jointifs ou non jointifs. On entend par jointif le cas où un fil de renfort a au moins un point de contact physique avec au moins un autre fil de renfort. The reinforcing threads may be joined or not joined. Joining means the case where a reinforcement wire has at least one point of physical contact with at least one other reinforcing thread.
Dans le cas où l’ensemble des fils de renfort d’une même nappe sont jointifs, la quantité de fils de renfort est plus importante que lorsque les fils de renfort ne sont pas tous jointifs. En conséquence, lors de l’enroulement du textile, les contraintes sont réparties sur l’ensemble du textile ce qui diminue la force exercée sur chacun des fils de renfort. En revanche, dans ce cas, le poids du textile est plus important que dans le cas où les fils de renforts ne sont pas tous jointifs. In the case where all the reinforcement son of the same sheet are joined, the amount of reinforcing son is greater than when the reinforcing son are not all contiguous. As a result, during the winding of the textile, the stresses are distributed over the entire fabric which decreases the force exerted on each of the reinforcing threads. On the other hand, in this case, the weight of the textile is greater than in the case where the reinforcing threads are not all joined.
Le poids du textile selon l’invention peut être optimisé en fonction du positionnement et du titre des fils de renfort. En effet, plus les fils de renfort ont un titre élevé, moins de fils sont nécessaires pour assurer l’effet technique. Ainsi, plus les fils de renfort présentent un titre élevé, plus la distance entre deux fils de renfort pourra être augmentée pour une même diminution de flèche et une même répartition des forces exercées lors de l’enroulement. The weight of the textile according to the invention can be optimized according to the positioning and the strength of the reinforcing threads. Indeed, more reinforcement son have a high title, less son are necessary to ensure the technical effect. Thus, the higher the strength of the reinforcing threads, the greater the distance between two reinforcing threads for the same decrease in deflection and the same distribution of forces exerted during winding.
De manière générale, les fils de renforts ont un titre compris entre 50 dtex et 1200 dtex, de manière avantageuse entre 150 dtex et 900 dtex et de manière encore plus avantageuse entre 250 dtex et 550 dtex. L’homme du métier saura associer l’écart et le titre des fils de renfort pour atteindre les propriétés souhaitées. De manière avantageuse, une même nappe est constituée de groupes distants ou écartés de fils de renforts jointifs. En d’autres termes, les nappes peuvent être constituées de groupes de fils de renforts distincts, chaque groupe comprenant par exemple deux ou trois fils de renfort et sont séparés les uns des autres. Ceci est avantageux car lors de l’enroulement du textile, les forces exercées localement sont réparties sur les fils d’un même groupe et le poids du textile est amoindri par rapport au cas où l’ensemble des fils de renforts sont jointifs. Par ailleurs, cette caractéristique permet de limiter le nombre d’opération de dépose des fils de renfort. In general, the reinforcing yarns have a titer of between 50 dtex and 1200 dtex, advantageously between 150 dtex and 900 dtex and even more advantageously between 250 dtex and 550 dtex. The skilled person will associate the gap and the title of the reinforcing son to achieve the desired properties. Advantageously, the same sheet consists of groups remote or spaced son joined reinforcements. In other words, the plies may consist of groups of son of separate reinforcements, each group comprising for example two or three reinforcing son and are separated from each other. This is advantageous because during the winding of the textile, the forces exerted locally are distributed over the son of the same group and the weight of the textile is reduced compared to the case where all the son of reinforcements are joined. Moreover, this characteristic makes it possible to limit the number of operations for removing the reinforcing threads.
En effet, le poids global du textile augmente avec le nombre de fils de renfort. Ainsi, l’utilisation de nappes dans lesquelles les fils de renfort ne sont pas tous jointifs permet de diminuer le poids global du textile. Indeed, the overall weight of the textile increases with the number of reinforcement son. Thus, the use of plies in which the reinforcing threads are not all joined reduces the overall weight of the textile.
Ainsi, de manière avantageuse, les fils de renfort d’une nappe ne sont pas tous jointifs. Thus, advantageously, the reinforcing son of a sheet are not all joined.
Dans le cas où des groupes de fils de renfort sont utilisés, il est possible de diminuer davantage le poids. En effet, pour une même efficacité de renfort, des fils de plus faible masse peuvent être employés lorsqu’ils sont positionnés par groupe et lesdits groupes peuvent être plus espacés les uns des autres. In the case where groups of reinforcing threads are used, it is possible to further reduce the weight. Indeed, for the same reinforcement efficiency, son of lower mass may be used when positioned in groups and said groups may be spaced apart from each other.
Ainsi, de manière avantageuse, les fils de renforts ont un titre compris entre 280dtex et 550dtex. Thus, advantageously, the reinforcing threads have a title of between 280dtex and 550dtex.
De manière à maximiser l’étanchéité aux fluides, notamment l’eau de pluie et la condensation, mais également de manière à générer une zone parfaitement ombragée, c’est- à-dire pour empêcher les rayons du soleil de passer à travers le textile, le textile selon l’invention est avantageusement enduit sur ladite face endroit et/ou sur ladite face envers. In order to maximize fluid tightness, especially rainwater and condensation, but also to generate a perfectly shaded area, ie to prevent the sun's rays from passing through the textile the textile according to the invention is advantageously coated on said face and / or on said reverse face.
De manière préférée, le matériau utilisé pour enduire le textile est un polyuréthane, un acrylique ou un PVC, sous forme de plastisol par exemple. La couche d’enduction est avantageusement déposée sur le textile après le positionnement desdits fils de renfort. Ceci est avantageux car dans le cas où les fils de renfort sont cousus des trous sont générés dans la couche support et la couche d’enduction permet de boucher ces trous. Une enduction sur la face envers permet également de bloquer les fils de renfort sur le support, et d’améliorer la mise sous tension du support lorsque les fils de renfort sont tendus. Preferably, the material used to coat the textile is a polyurethane, an acrylic or a PVC, in the form of plastisol, for example. The coating layer is advantageously deposited on the textile after the positioning of said reinforcement son. This is advantageous because in the case where the reinforcing son are sewn holes are generated in the support layer and the coating layer closes these holes. A coating on the back side also makes it possible to block the reinforcing threads on the support, and to improve the tensioning of the support when the reinforcing threads are stretched.
Dans un mode de réalisation particulier, le textile est enduit sur la face envers après le positionnement des nappes de fils de renfort, puis enduit une seconde fois sur au moins l’une des faces envers et endroit comme décrit ci-dessus. La première enduction permet d’assurer une bonne enduction des nappes de fils de renfort. Dans ce mode particulier, la première enduction est avantageusement réalisée avec du polyuréthane. In a particular embodiment, the textile is coated on the back side after the positioning of the reinforcing son plies, then coated a second time on at least one of the faces facing and place as described above. The first coating makes it possible to ensure good coating of the plies of reinforcing threads. In this particular embodiment, the first coating is advantageously carried out with polyurethane.
Conformément à l’invention, lesdits fils de renfort forment des angles compris entre 5° et 85° avec ladite direction d’enroulement, lesdits angles étant symétriques par rapport à ladite direction d’enroulement. According to the invention, said reinforcing son form angles between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction.
Ces fils de renforts permettent de répartir les contraintes du textile sur l’ensemble de celui- ci. De manière générale, lorsqu’un textile est tendu les contraintes exercées sur le textile induisent une flèche vers le centre de gravité du textile tendu. Ainsi, dans le cas particulier d’un textile de forme rectangulaire, les contraintes sont essentiellement exercées sur les diagonales du rectangle et le centre du rectangle a tendance à s’affaisser. L’angle des fils de renfort avec la direction d’enroulement optimal dépend de la forme et des dimensions du textile. Le fait que les angles des deux nappes soient symétriques par rapport à la direction d’enroulement, permet de répartir de manière homogène les contraintes sur l’ensemble du textile et ainsi de diminuer de manière significative la flèche du textile. These reinforcing threads make it possible to distribute the stresses of the textile over the whole of the latter. In general, when a textile is stretched the stresses exerted on the textile induce an arrow towards the center of gravity of the stretched textile. Thus, in the particular case of a textile of rectangular shape, the stresses are essentially exerted on the diagonals of the rectangle and the center of the rectangle tends to sag. The angle of the reinforcing yarns with the optimum winding direction depends on the shape and dimensions of the textile. The fact that the angles of the two plies are symmetrical with respect to the winding direction makes it possible to distribute the stresses uniformly over the entire textile and thus to significantly reduce the deflection of the textile.
La forme du support, et donc du textile, peut être variée. De manière générale, ledit support est de forme rectangulaire ou trapézoïdale. The shape of the support, and therefore of the textile, can be varied. In general, said support is of rectangular or trapezoidal shape.
Dans un mode de réalisation particulier, le textile est de forme rectangulaire. Dans le cas où le textile est de forme rectangulaire, le textile est enroulé selon une direction d’enroulement parallèle aux largeurs du rectangle, et donc perpendiculaire aux longueurs dudit rectangle. Dans ce mode de réalisation particulier, le Demandeur a remarqué qu’il était avantageux de positionner les fils de renfort de sorte à ce qu’un fil de renfort ou un groupe de fil de renfort soit positionné selon les deux diagonales dudit rectangle. In a particular embodiment, the textile is rectangular in shape. In the case where the textile is rectangular in shape, the textile is wound in a winding direction parallel to the width of the rectangle, and therefore perpendicular to the lengths of said rectangle. In this particular embodiment, the Applicant has noticed that it is advantageous to position the reinforcing son so that a reinforcing wire or a group of reinforcing wire is positioned along the two diagonals of said rectangle.
Dans un mode de réalisation particulier, le textile comprend en outre deux nappes de fils de renfort supplémentaire, à savoir une troisième nappe et une quatrième nappe, lesdits fils de renforts formant des angles (as a4) compris entre 5° et 85° avec ladite direction d’enroulement, lesdits angles étant symétriques par rapport à ladite direction d’enroulement. Ce mode de réalisation particulier est avantageux car il permet de répartir les contraintes exercées sur les fils de renforts lors de l’enroulement du textile selon l’invention en fonction de l’avancée du processus d’enroulement. En effet, dans le cas où le textile est de forme rectangulaire, les longueurs présentent la même dimension au cours du processus d’enroulement, alors que les largeurs diminuent. Ainsi, la diagonale du rectangle de textile restant à enrouler présente un angle qui évolue linéairement avec l’enroulage du textile. L’angle optimal de positionnement théorique des fils de renfort évolue lui aussi. In a particular embodiment, the textile further comprises two plies of additional reinforcing threads, namely a third ply and a fourth ply, said reinforcing threads forming angles (as to 4 ) of between 5 ° and 85 ° with said winding direction, said angles being symmetrical with respect to said winding direction. This particular embodiment is advantageous because it makes it possible to distribute the stresses exerted on the reinforcing threads during the winding of the textile according to the invention as a function of the progress of the winding process. Indeed, in the case where the textile is rectangular in shape, the lengths have the same dimension during the winding process, while the widths decrease. Thus, the diagonal of the textile rectangle remaining to be wound has an angle that changes linearly with the winding of the textile. The optimal angle of theoretical positioning of the reinforcing threads also evolves.
Dans un autre mode de réalisation particulier, le textile est de forme trapézoïdale. Dans ce cas, la direction d’enroulement est perpendiculaire auxdites lisières parallèles, qui forment la petite et la grande base du trapèze, et, pour des raisons pratiques, l’axe d’enroulement se situe du côté de la lisière la plus grande entre lesdites deux lisières parallèles, autrement dit du côté de la grande base du trapèze. Dans ce mode de réalisation particulier, le Demandeur a remarqué qu’il était avantageux de positionner les fils de renfort de sorte à ce qu’une partie soit parallèle à un des côtés du trapèze reliant les bases et qu’une autre partie soit parallèles à l’autre côté du trapèze reliant les bases. En effet, dans le cas où le textile de forme trapézoïdale est incorporé dans un store banne les côtés du trapèze reliant les bases ont tendance à s’affaisser car elles ne sont pas parfaitement tendu, ainsi, les fils de renfort permette de diminuer la flèche en bordure de textile. De manière avantageuse, les nappes de fils de renfort présentent une densité de fils de renfort différente d’une nappe à une autre. Ceci est avantageux car, dans le cas où le textile est incorporé dans un store banne, l’effort à fournir pour enrouler le textile sur lui-même dépend de l’état d’avancement du processus d’enroulement. Ainsi, la densité de fils de renfort sur chaque nappe peut être adaptée en fonction des contraintes exercées sur le textile. In another particular embodiment, the textile is trapezoidal in shape. In this case, the winding direction is perpendicular to said parallel edges, which form the small and large base of the trapezium, and, for practical reasons, the winding axis is located on the side of the largest edge between said two parallel edges, in other words on the side of the large base of the trapezium. In this particular embodiment, the Applicant has noticed that it is advantageous to position the reinforcing son so that a part is parallel to one of the sides of the trapezium connecting the bases and another part is parallel to the other side of the trapeze connecting the bases. Indeed, in the case where the trapezoidal textile is incorporated in an awning the sides of the trapezium connecting the bases tend to collapse because they are not perfectly tight, thus, the reinforcing threads allows to reduce the arrow on the edge of textile. Advantageously, the layers of reinforcing threads have a density of reinforcement son different from one sheet to another. This is advantageous because, in the case where the textile is incorporated in a awning, the effort required to wind the textile on itself depends on the state of progress of the winding process. Thus, the density of reinforcement son on each sheet can be adapted according to the stresses exerted on the textile.
Ainsi, de manière avantageuse, lesdites nappes comprennent, indépendamment, entre 2 et 8 fils de renfort par cm. Thus, advantageously, said plies comprise, independently, between 2 and 8 reinforcement threads per cm.
L’invention concerne également un store banne comprenant au moins un textile tel que décrit ci-dessus. The invention also relates to an awning comprising at least one textile as described above.
Dans le cas où le store banne comporte au moins deux textiles tels que décrits ci-dessus, lesdits textiles sont avantageusement assemblés au niveau de feuillures par soudure puis calandrage. Ceci est avantageux car aucune surépaisseur n’est générée au niveau de la zone d’assemblage des textiles, il est en effet connu que les surépaisseurs génèrent des tensions sur le textile en bordure des zones d’assemblage, ce qui provoque des plis et peut engendrer les problèmes sus-cités. In the case where the awning comprises at least two textiles as described above, said textiles are advantageously assembled at rabbet level by welding and calendering. This is advantageous because no extra thickness is generated at the level of the assembly zone of the textiles, it is known that the extra thicknesses generate tension on the textile edge assembly areas, which causes folds and can engender the aforementioned problems.
DESCRIPTION SOMMAIRE DES FIGURES SUMMARY DESCRIPTION OF THE FIGURES
La manière de réaliser l’invention, ainsi que les avantages qui en découlent, ressortiront bien de la description des modes de réalisation qui suivent, à l’appui des figures annexées dans lesquelles : The manner of carrying out the invention, as well as the advantages which result therefrom, will emerge from the description of the embodiments which follow, in support of the appended figures in which:
la figure 1 est une vue en perspective d’un textile selon un aspect de l’invention ; les figures 2 à 4 sont des vues de dessus de textiles selon trois cas particulier de l’invention ;  Figure 1 is a perspective view of a textile according to one aspect of the invention; Figures 2 to 4 are top views of textiles according to three particular cases of the invention;
les figures 5a et 5b sont des coupes transversales de la zone d’assemblage de deux textiles selon l’invention présentant une feuillure, montrée respectivement avant et après assemblage. Bien entendu, les dimensions et les proportions des éléments illustrés aux figures 1 à 5b ont pu être exagérées par rapport à la réalité, et n’ont été données que dans le but de faciliter la compréhension de l’invention. Sur les figures 1 à 4, la flèche indique la direction d’enroulement du textile selon l’invention. Figures 5a and 5b are cross sections of the assembly zone of two textiles according to the invention having a rabbet, respectively shown before and after assembly. Of course, the dimensions and the proportions of the elements illustrated in FIGS. 1 to 5b could have been exaggerated with respect to reality, and were given only in order to facilitate understanding of the invention. In Figures 1 to 4, the arrow indicates the winding direction of the textile according to the invention.
DESCRIPTION DF.T AITT.EE DESCRIPTION DF.T AITT.EE
Comme illustré à la figure 1, le textile selon un aspect de l’invention comprend un support 5, une nappe constituée des fils de renforts 1 et une seconde nappe constituée des fils de renfort 2. As illustrated in FIG. 1, the textile according to one aspect of the invention comprises a support 5, a ply consisting of reinforcing threads 1 and a second ply consisting of reinforcing threads 2.
La nappe constituée des fils de renfort 1 est positionnée sur la couche support 5 et la nappe constituée des fils de renfort 2 est positionnée sur la nappe contenant les fils de renfort 1. Les fils de renfort sont positionnés de manière plane. En d’autres termes, les fils de renfort 1 définissent le plan de la première nappe et les fils de renfort 2 définissent le plan de la seconde nappe. Il en résulte que le textile représenté à la figure 1, comprend trois plans distincts et parallèles, un premier plan représenté par la couche support, un second plan représenté par la première nappe constituée des fils de renfort 1 et un troisième plan représenté par la seconde nappe constituée des fils de renfort 2. The sheet constituted by the reinforcing threads 1 is positioned on the support layer 5 and the sheet constituted by the reinforcing threads 2 is positioned on the sheet containing the reinforcing threads 1. The reinforcing threads are positioned in a plane manner. In other words, the reinforcing threads 1 define the plane of the first ply and the reinforcing threads 2 define the plane of the second ply. As a result, the textile shown in FIG. 1 comprises three distinct and parallel planes, a first plane represented by the support layer, a second plane represented by the first ply constituted by the reinforcing threads 1 and a third plane represented by the second web made of reinforcing threads 2.
Ainsi, les fils de renfort 1 et 2 ne présentent aucun embuvage. Ceci a pour effet que dès qu’une contrainte est exercée sur ceux-ci, les fils de renfort sont déjà rectilignes et transmettent immédiatement leur traction. Thus, the reinforcing son 1 and 2 have no embossing. This has the effect that as soon as a stress is exerted on them, the reinforcement son are already rectilinear and immediately transmit their traction.
La figure 2 est une vue du dessus du textile selon la figure 1 sur laquelle des fils de coutures 6 ont été représentés. Figure 2 is a top view of the textile according to Figure 1 on which son of seams 6 have been shown.
Les fils de renfort 1 forment un angle ai avec la direction d’enroulement du textile cet angle ai est compris entre 5° et 85°. Les fils de renfort 2 forment un angle a2 qui est symétrique de l’angle ai par rapport à la direction d’enroulement. Le fait que les angles ai et a2 soient symétriques permet de répartir de manière homogène les contraintes sur le textile lorsqu’il est tendu ou en phase d’enroulement. Les fils de coutures 6 permettent de solidariser les nappes constituées de fils de renfort avec la couche support. Tels que représentés sur la figure 2, les fils de coutures ont été cousus après le positionnement de la seconde nappe constituée des fils de renfort 2. The reinforcing son 1 form an angle ai with the winding direction of the textile this angle ai is between 5 ° and 85 °. The reinforcing son 2 form an angle α 2 which is symmetrical with the angle α with respect to the winding direction. The fact that the angles ai and a 2 are symmetrical makes it possible to evenly distribute the stresses on the fabric when it is stretched or in the winding phase. The seaming threads 6 make it possible to secure the plies made of reinforcing threads with the support layer. As shown in FIG. 2, the seaming threads were sewn after the positioning of the second ply constituted by the reinforcing threads 2.
Comme déjà évoqué, les nappes constituées de fils de renfort peuvent être collées et non cousues, ou encore cousues une à une. As already mentioned, the plies made of reinforcing son can be glued and not sewn, or sewn one by one.
Le mode de réalisation particulier représenté à la figure 3 présente quatre nappes de fils de renfort. De la même manière que précédemment, les fils de renfort 1 et les fils de renfort 2 forment respectivement un angle ai et un angle a2 avec la direction d’enroulement du textile. Une troisième et une quatrième nappe constituée respectivement des fils de renfortThe particular embodiment shown in FIG. 3 presents four plies of reinforcing threads. In the same manner as before, the reinforcing son 1 and the reinforcing son 2 respectively form an angle α1 and an angle α 2 with the winding direction of the textile. A third and a fourth ply constituted respectively of reinforcement threads
3 et des fils de renfort 4 sont positionnées au-dessus de la seconde nappe de fils de renfort. Les fils de renfort 3 forment un angle a3 avec la direction d’enroulement et les fils de renfort3 and reinforcing son 4 are positioned above the second sheet of reinforcing son. The reinforcing threads 3 form an angle a 3 with the winding direction and the reinforcing threads
4 forment un angle a4 avec la direction d’enroulement, les angles a3 et a4 étant symétriques par rapport à la direction d’enroulement. 4 form an angle to 4 with the winding direction, the angles a 3 and 4 being symmetrical with respect to the winding direction.
De la même manière que dans le mode de réalisation illustré aux figures 1 et 2, les différentes nappes sont dans des plans distincts et parallèles. In the same way as in the embodiment illustrated in FIGS. 1 and 2, the different plies are in distinct and parallel planes.
L’intérêt des fils de renfort 3 et 4 est de pouvoir optimiser la répartition des efforts exercés sur les fils de renfort. Pour ce faire, les fils de renforts 3 forment un angle a3 qui est plus important que l’angle ai. De manière analogue, et de par le fait que les angles ai et a2 d’une part et que les angles a3 et a4 d’autre part sont symétrique entres eux, l’angle a4 est plus important que l’angle a2. The advantage of the reinforcing son 3 and 4 is to optimize the distribution of forces exerted on the reinforcing son. To do this, the reinforcing son 3 form an angle a 3 which is larger than the angle ai. Similarly, and because the angles ai and a 2 on the one hand and the angles a 3 and a 4 on the other hand are symmetrical with each other, the angle a 4 is greater than the angle a 2 .
Lors de la phase d’enroulement du textile, la fraction située entre la barre de charge et l’axe d’enroulement, et qui est tendue diminue. De ce fait, les forces exercées sur le textile changent de direction au fur et à mesure que le textile est enroulé. Ainsi, les contraintes exercées évoluent au cours de l’enroulement du textile et l’efficacité des fils de renfort 1 et 2 diminue. Les fils de renfort 3 et 4 sont alors plus sollicités et la contrainte exercée sur les fils de renfort 1 et 2 est amoindrie, ce qui permet de répartir l’effort tout au long du processus d’enroulement. Le mode de réalisation particulier représenté à la figure 4 illustre le cas où le textile est de forme trapézoïdale. Dans ce cas, la direction d’enroulement est perpendiculaire aux deux lisières parallèles du textile qui forment la petite base et la grande base du trapèze. During the textile winding phase, the fraction between the load bar and the winding axis, and which is tensioned, decreases. As a result, the forces exerted on the textile change direction as the textile is rolled up. Thus, the stresses exerted evolve during the winding of the textile and the effectiveness of the reinforcing son 1 and 2 decreases. The reinforcement son 3 and 4 are then more stressed and the stress exerted on the reinforcing son 1 and 2 is reduced, which allows to distribute the effort throughout the winding process. The particular embodiment shown in Figure 4 illustrates the case where the textile is trapezoidal. In this case, the winding direction is perpendicular to the two parallel edges of the textile which form the small base and the large base of the trapezium.
Les autres caractéristiques du textile, à savoir la symétrie des angles des fils de renforts, et la disposition sur des plans distincts des nappes de fils de renfort et de la couche support, sont analogues. The other characteristics of the textile, namely the symmetry of the angles of the reinforcing threads, and the arrangement on separate planes of the reinforcing thread plies and the support layer, are similar.
De préférence, et comme illustré à la figure 4, les fils de renfort sont inclinés pour être parallèles aux côtés du trapèze reliant les bases. Ceci permet de maintenir une tension des zones latérales du trapèze lorsque la tension est exercée par la barre de charge, qui est plus courte que la grande base du trapèze. Preferably, and as illustrated in Figure 4, the reinforcing son are inclined to be parallel to the sides of the trapezium connecting the bases. This makes it possible to maintain a tension of the lateral zones of the trapezium when the tension is exerted by the load bar, which is shorter than the large base of the trapezium.
Lorsque le textile n’est pas assez large pour être utilisé seul, il est possible d’assembler plusieurs textiles. Pour ce faire, de manière avantageuse, les textiles sont assemblés par feuillure, comme illustré aux figures 5a et 5b de manière à ne pas générer de surépaisseur au niveau de la zone d’assemblage. When the textile is not wide enough to be used alone, it is possible to assemble several textiles. To do this, advantageously, the textiles are joined by rebate, as shown in Figures 5a and 5b so as not to generate extra thickness at the assembly area.
L’intérêt de ne pas générer de surépaisseur au niveau de la zone d’assemblage est d’éviter la formation de plis. En effet, comme mentionné précédemment, il est connu que les surépaisseurs génèrent des tensions sur le textile en bordure des zones d’assemblage, ce qui provoque des plis et peut engendrer les problèmes suscités. The advantage of not generating extra thickness in the assembly area is to avoid the formation of folds. Indeed, as mentioned above, it is known that overthicknesses generate tension on the textile edge assembly areas, which causes wrinkles and can cause the problems raised.
Dans le mode de réalisation tel qu’illustré aux figures 5a et 5b, deux textiles 7 et 8 sont assemblés. Les textiles 7 et 8 présentent au niveau d’au moins une de leurs lisières une partie saillante 71 , 81 sur une partie de son épaisseur, du côté de la face envers ou du côté de la face endroit (figure 5 a). En pratique, la superposition des parties saillantes 71 et 81 permettent d’apporter une continuité entre les textiles 7 et 8 (figure 5b). En d’autres termes, la partie saillante 71 est complémentaire de la partie saillante 81 dans l’épaisseur des textiles 7 et 8. De manière avantageuse, la partie saillante 71 du textile 7 comporte l’âme textile 72 du textile 7 et la partie saillante 81 du textile 8 ne comporte pas l’âme textile 82 du textile 8. Ainsi, de manière avantageuse, la partie saillante 71 présente une épaisseur égale à environ 2/3 de l’épaisseur du textile 7 et la partie saillante 81 présente une épaisseur égale à environ 1/3 de l’épaisseur du textile 8. In the embodiment as illustrated in Figures 5a and 5b, two textiles 7 and 8 are assembled. Textiles 7 and 8 have at at least one of their selvedges a projecting portion 71, 81 over part of its thickness, on the side of the back side or the side of the face side (Figure 5 a). In practice, the superposition of the projecting portions 71 and 81 make it possible to provide continuity between the textiles 7 and 8 (FIG. 5b). In other words, the protruding portion 71 is complementary to the projecting portion 81 in the thickness of the textiles 7 and 8. Advantageously, the projecting portion 71 of the textile 7 comprises the textile core 72 of the textile 7 and the projecting portion 81 of the textile 8 does not include the textile core 82 of the textile 8. Thus, advantageously, the projecting portion 71 has a thickness equal to about 2/3 of the thickness of the textile 7 and the projecting portion 81 has a thickness equal to about 1/3 of the thickness of the textile 8.
Les deux textiles 7 et 8 sont assemblés en superposant leurs parties saillantes 71, 81 de manière à faire coïncider les faces envers et les faces endroit des textiles 7 et 8 (figure 5 b). En pratique, une fois les parties saillantes 71, 81 superposées, les deux textiles 7 et 8 sont soudés entre eux. The two textiles 7 and 8 are assembled by superimposing their projections 71, 81 so as to match the faces of the faces and faces of textiles 7 and 8 (Figure 5b). In practice, once the projecting portions 71, 81 superimposed, the two textiles 7 and 8 are welded together.
En pratique, les parties saillantes 71, 81 des textiles 7 et 8 peuvent être obtenues de différentes manières. In practice, the projections 71, 81 of the textiles 7 and 8 can be obtained in different ways.
Dans un mode de réalisation particulier, les parties saillantes 71, 81 sont obtenues par le non dépôt d’une couche présente sur le reste de la surface de la feuille. Autrement dit, lors de la phase d’enduction de l’âme textile, plusieurs couches élémentaires sont déposées de manière successive. Une ou plusieurs de ces couches élémentaires peuvent être absentes dans les zones des bandes caractéristiques. Pour ce faire, des masques peuvent être rapportés sur la machine d’enduction de façon à éviter que le PVC liquide de certaines de ces couches élémentaires vienne se déposer dans cette zone, pour réaliser ainsi une bande dont la couche d’enduction est de moindre épaisseur par rapport au reste de la surface. In a particular embodiment, the projecting parts 71, 81 are obtained by the non-deposition of a layer present on the rest of the surface of the sheet. In other words, during the coating phase of the textile core, several elementary layers are deposited successively. One or more of these elementary layers may be absent in the characteristic strip areas. To do this, masks can be reported on the coating machine so as to prevent the liquid PVC of some of these elementary layers comes to be deposited in this area, to thereby achieve a strip whose coating layer is of lesser thickness relative to the rest of the surface.
Dans un autre mode de réalisation particulier, les parties saillantes 71, 81 sont obtenues par le rognage d’une portion d’une couche d’enduction présente sur la surface de la feuille. Cette opération permet d’éliminer mécaniquement une portion de la couche d’enduction sur une ou des bandes. In another particular embodiment, the projections 71, 81 are obtained by trimming a portion of a coating layer present on the surface of the sheet. This operation makes it possible to mechanically remove a portion of the coating layer on one or more strips.
En pratique, dans les deux modes de réalisation précédent, la portion du tissu du textile 8 qui n’est pas enduite sur une de ces faces est retirée par découpe. In practice, in the two previous embodiments, the portion of the textile fabric 8 that is not coated on one of these faces is removed by cutting.

Claims

REVENDICATIONS
1 Textile, comportant deux lisières parallèles, enroulable sur lui-même selon au moins une direction d’enroulement parallèle ou perpendiculaire auxdites lisières parallèles, destiné à être tendu, comprenant une couche support (5), ledit support (5) présentant une face endroit et une face envers, caractérisé en ce qu’il comporte au moins deux nappes superposées, à savoir une première nappe et une seconde nappe, constituées de fils de renfort (1, 2) , lesdites nappes étant positionnées sur ladite face envers, lesdits fils de renfort (1, 2) formant des angles (ai a2) compris entre 5° et 85° avec ladite direction d’enroulement, lesdits angles (ai a2) étant symétriques par rapport à ladite direction d’enroulement. 1 Textile, comprising two parallel edges, rollable on itself in at least one direction of winding parallel or perpendicular to said parallel edges, intended to be stretched, comprising a support layer (5), said support (5) having a face location and a reverse side, characterized in that it comprises at least two superimposed layers, namely a first ply and a second ply, constituted by reinforcing threads (1, 2), said plies being positioned on said back face, said threads reinforcing member (1, 2) forming angles (ai to 2 ) between 5 ° and 85 ° with said winding direction, said angles (ai a 2 ) being symmetrical with respect to said winding direction.
2. Textile selon Tune des revendications précédentes, caractérisé en ce que la couche support (5) est un tissu, un non tissé, une grille ou un film. 2. Textile according to one of the preceding claims, characterized in that the support layer (5) is a fabric, a nonwoven, a grid or a film.
3. Textile selon la revendication 1, caractérisé en ce que lesdites nappes constituées de fils de renfort (1, 2) sont cousues ou collées sur ladite couche support (5). 3. Textile according to claim 1, characterized in that said plies consist of reinforcing son (1, 2) are sewn or glued on said support layer (5).
4. Textile selon Tune des revendications précédentes, caractérisée en ce que les fils de renfort (1, 2) d’une nappe ne sont pas tous jointifs. 4. Textile according to one of the preceding claims, characterized in that the reinforcing son (1, 2) of a web are not all joined.
5. Textile selon Tune des revendications précédentes, caractérisé en ce que les fils de renfort (1, 2) ont un titre compris entre 50dtex et l200dtex. 5. Textile according to one of the preceding claims, characterized in that the reinforcing son (1, 2) have a title between 50dtex and l200dtex.
6. Textile selon Tune des revendications précédentes, caractérisée en ce que le textile est enduit sur ladite face endroit et/ou sur ladite face envers. 6. Textile according to one of the preceding claims, characterized in that the textile is coated on said face and / or said face face.
7. Textile selon Tune des revendications précédentes, caractérisée en ce qu’il comprend en outre deux nappes de fils de renfort (3, 4) supplémentaire, à savoir une troisième nappe et une quatrième nappe, lesdits fils de renforts (3, 4) formant des angles (a3 a4) compris entre 5° et 85° avec ladite direction d’enroulement, lesdits angles (a3 a4) étant symétriques par rapport à ladite direction d’enroulement. 7. Textile according to one of the preceding claims, characterized in that it further comprises two plies of reinforcing son (3, 4) additional, namely a third ply and a fourth ply, said reinforcement son (3, 4) forming angles (a 3 to 4 ) between 5 ° and 85 ° with said winding direction, said angles (a 3 to 4 ) being symmetrical with respect to said winding direction.
8. Textile selon Tune des revendications précédentes, caractérisé en ce que les nappes de fils de renfort (1 , 2, 3, 4) présentent une densité de fils de renfort différente d’une nappe à une autre. 8. Textile according to one of the preceding claims, characterized in that the plies of reinforcement son (1, 2, 3, 4) have a density of reinforcement son different from one sheet to another.
9. Textile selon Tune des revendications précédentes, caractérisé en ce que lesdites nappes comprennent, indépendamment, entre 2 et 8 fils de renfort (1, 2, 3, 4) par cm. 9. Textile according to one of the preceding claims, characterized in that said sheets comprise, independently, between 2 and 8 reinforcing son (1, 2, 3, 4) per cm.
10. Textile selon Tune des revendications précédentes, caractérisé en ce que ledit support (5) est de forme rectangulaire ou trapézoïdale. 10. Textile according to one of the preceding claims, characterized in that said support (5) is of rectangular or trapezoidal shape.
11. Store banne comprenant au moins un textile selon Tune des revendications précédentes. 11. Blind awning comprising at least one textile according to one of the preceding claims.
12. Store banne selon la revendication 11, caractérisé en ce qu’il comporte au moins deux textiles selon Tune des revendications 1 à 10, caractérisé en ce que lesdits textiles sont assemblés par soudure puis calandrage ou par feuillure. 12. Blind awning according to claim 11, characterized in that it comprises at least two textiles according to one of claims 1 to 10, characterized in that said textiles are assembled by welding then calendering or rebate.
EP19713095.8A 2018-02-23 2019-02-21 Fabric having a sheet of reinforcement threads, and awning comprising said fabric Pending EP3755834A1 (en)

Applications Claiming Priority (2)

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FR1851595A FR3078346B1 (en) 2018-02-23 2018-02-23 TEXTILE WITH REINFORCEMENT THREADS
PCT/FR2019/050405 WO2019162627A1 (en) 2018-02-23 2019-02-21 Fabric having a sheet of reinforcement threads, and awning comprising said fabric

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EP (1) EP3755834A1 (en)
KR (1) KR20200123788A (en)
CN (1) CN111757951B (en)
AU (1) AU2019223287A1 (en)
CA (1) CA3092135A1 (en)
FR (1) FR3078346B1 (en)
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WO2002089617A2 (en) * 2001-05-03 2002-11-14 Eric Hazan Anti-vandalism and cut resistant fabric
FR2877368A1 (en) * 2004-11-02 2006-05-05 Paul Riedel Sunshade for outdoor use is made from woven or knitted strips of reflective material with gaps between that let through light
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CN111757951B (en) 2023-05-12
SG11202007547UA (en) 2020-09-29
FR3078346A1 (en) 2019-08-30
AU2019223287A1 (en) 2020-08-27
FR3078346B1 (en) 2020-02-14
CN111757951A (en) 2020-10-09
WO2019162627A1 (en) 2019-08-29
KR20200123788A (en) 2020-10-30
CA3092135A1 (en) 2019-08-29

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