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.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=62167535

Family Applications (1)

Country Status (9)

Family Cites Families (16)

• 2018
  • 2018-02-23 FR FR1851595A patent/FR3078346B1/fr active Active
• 2019
  • 2019-02-21 US US16/969,354 patent/US20210079570A1/en active Pending
  • 2019-02-21 WO PCT/FR2019/050405 patent/WO2019162627A1/fr unknown
  • 2019-02-21 EP EP19713095.8A patent/EP3755834A1/fr active Pending
  • 2019-02-21 CN CN201980014889.XA patent/CN111757951B/zh active Active
  • 2019-02-21 KR KR1020207024166A patent/KR20200123788A/ko unknown
  • 2019-02-21 CA CA3092135A patent/CA3092135A1/fr active Pending
  • 2019-02-21 SG SG11202007547UA patent/SG11202007547UA/en unknown
  • 2019-02-21 AU AU2019223287A patent/AU2019223287A1/en not_active Abandoned

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