EP4053320B1 - Bande à buses destinée à la génération des jets de fluide permettant de consolider de manière hydrodynamique une bande de matière, ainsi qu'installation de consolidation d'une telle bande - Google Patents

Bande à buses destinée à la génération des jets de fluide permettant de consolider de manière hydrodynamique une bande de matière, ainsi qu'installation de consolidation d'une telle bande Download PDF

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Publication number
EP4053320B1
EP4053320B1 EP22155647.5A EP22155647A EP4053320B1 EP 4053320 B1 EP4053320 B1 EP 4053320B1 EP 22155647 A EP22155647 A EP 22155647A EP 4053320 B1 EP4053320 B1 EP 4053320B1
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European Patent Office
Prior art keywords
nozzle
strip
row
rows
nozzle openings
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EP22155647.5A
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German (de)
English (en)
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EP4053320A1 (fr
Inventor
Ullrich MÜNSTERMANN
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Truetzschler Group SE
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Truetzschler Group SE
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a nozzle strip for generating fluid jets for the hydrodynamic solidification of a material web and a system for solidifying such a material web, comprising a nozzle bar and a nozzle strip according to the invention.
  • Such devices are used for hydroentanglement, for example, of material webs formed from fibers.
  • nonwovens from low to very high nonwoven weights made from natural fibers, synthetic fibers and spunbonds can be consolidated.
  • structuring and/or perforations of the material web are possible with such a nozzle strip.
  • JP H06 184895 A , EP 1 309 743 B1 and EP 1 621 655 A1 disclose examples of such devices.
  • a nozzle strip is provided in each case, which has a large number of oblique nozzle openings.
  • the nozzle openings are arranged, for example, in two rows running parallel to one another. Within the same row, the longitudinal axes of all nozzle openings also run parallel to each other, like the teeth of a comb.
  • the disadvantage of such a parallel alignment of the nozzle openings is that there are limits to the solidification of the material web.
  • the object on which the invention is based is achieved by a nozzle strip and a corresponding system for solidifying a material web.
  • Preferred embodiments of the invention are specified in the subclaims, which can optionally be combined with one another.
  • the solidification of the material web is significantly increased by cleverly orienting the oblique bores.
  • the longitudinal axes become direct to each other adjacent nozzle openings of one and the same row and the longitudinal axes of directly opposite nozzle openings of directly adjacent rows are each oriented so that the emerging fluid jets are skewed to one another.
  • all nozzle openings in one and the same row as well as directly adjacent nozzle openings in directly adjacent rows never run parallel to one another.
  • Due to the differently aligned fluid jets i.e. the many changes of direction among each other, more turbulence of fibers occurs when the fluid jets hit the material web.
  • the fibers intertwine even more strongly, which results in an increased strength of the material web compared to the prior art.
  • material web when the term material web is mentioned according to the invention, what is meant is a fibrous web made from fibers. This can be in the form of woven fabrics, knitted fabric webs or nonwovens and preferably include the fibers mentioned at the beginning.
  • skewed means that the longitudinal axes of the nozzle openings neither intersect nor are parallel to one another. This refers to the part of the longitudinal axes that extends along the nozzle opening of the nozzle strip and beyond in the direction of delivery of the fluid.
  • the distances are always meant in a top view of the nozzle strip (XY plane), i.e. seen on the fluid inlet side. The distances from the respective intersection of the longitudinal axis of the corresponding nozzle opening with the XY plane are measured.
  • Oblique bores mean that the fluid jets or the longitudinal axes of the nozzle openings are inclined at an angle of inclination relative to a perpendicular to the XY plane of the nozzle strip or the material web. They can be aligned in such a way that these longitudinal axes lie in planes that are in turn perpendicular to the XY plane.
  • the location of one Longitudinal axis, which can be assumed to be a straight line, can be defined by a unit vector in space.
  • the nozzle strip is prismatic and has a length (X), width (Y) and height (Z) extent.
  • the designations X, Y, Z correspond to the axis designations of the same name in a Cartesian coordinate system.
  • the respective longitudinal axes of the corresponding nozzle openings are at an angle of inclination of 1° to 20°, preferably 1° to 10°, particularly preferably 1, relative to a perpendicular to an XY plane, which is spanned by the width and length extension of the nozzle strip ° inclined to 5°. This angle has proven to be particularly advantageous in order to produce particularly favorable swirling of the fibers of the material web.
  • the size of the angle of inclination depends, among other things, on the distance of the nozzle strip from the surface of the web or material web. For short distances, for example up to 10 mm, the angle of inclination can be chosen larger. For large distances, for example over 25 mm, an angle of inclination in the range of 1° to 5° can be advantageous.
  • the distances between the holes from one another also play a role here. In principle, it can be provided that all oblique bores and thus all longitudinal axes of the nozzle openings in a row have the same angle of inclination.
  • the at least two rows are preferably arranged spaced apart from one another in the width extension (Y) of the nozzle strip.
  • the rows can be arranged parallel or at an angle to one another.
  • the length extension Y
  • the longitudinal axes of directly successive nozzle openings of a respective row can be mirrored in their orientation relative to a respective plane of symmetry arranged between two adjacent nozzle openings of the respective row or point-mirrored to a point of symmetry arranged therein, so that oblique bores are alternately mirrored from nozzle opening to nozzle opening within a row of the nozzle strip.
  • a symmetrical arrangement of individual nozzle openings that are directly adjacent to one another can be created. The advantages of the symmetry of the arrangement will be discussed later.
  • the longitudinal axes of two directly adjacent nozzle openings of directly adjacent rows can lie in planes that are angled or orthogonal to one another and are preferably both perpendicular to the XY plane. This also promotes the symmetry of the arrangement of adjacent nozzle openings with one another.
  • nozzle openings These can be arranged within a row - viewed in the longitudinal direction of the row and thus in the length extension (X) of the nozzle strip - each spaced apart from one another by a distance X1.
  • directly adjacent rows of nozzle openings are arranged offset from one another by half the distance X1 in the longitudinal direction of the row, i.e. viewed in the length extension (X), the distance directly adjacent rows are not directly opposite each other when viewed in the direction of the width extension (Y) of the nozzle strip. This achieves a high level of symmetry and a high packing density of the nozzle openings in the nozzle strip.
  • Such a symmetrical arrangement of the nozzle openings according to the invention describes the longitudinal axes of immediately adjacent nozzle openings - including those across directly adjacent rows - as lines of a single-shell hyperboloid. Individual or all longitudinal axes of the nozzle openings arranged in this way of directly adjacent nozzle openings, even across directly adjacent rows, are thus arranged in such a way that they form parts of the lines of a hyperboloid.
  • This arrangement causes these nozzle openings to produce fluid jets that create a swirl around a virtual center of the nozzle openings. This twist leads to better turbulence of the fibers and thus to increased solidification of the material web.
  • the swirl is generated without the nozzles themselves having to rotate. This avoids a complex construction.
  • the nozzle openings of the first and third rows which are arranged on both sides of the middle second row - viewed in the longitudinal direction of the row and thus in the length extension (X) of the nozzle strip - are opposite the middle one row offset.
  • the outer two rows are minimally offset from the inclination of the fluid jet at a distance from the nozzle openings.
  • the offset refers to the distance between the center of the nozzle opening on the top of the nozzle strip and the center of the nozzle opening on the bottom of the nozzle strip.
  • the first row is offset from the middle row by a distance of 0.5*X1+X2 and the second row is offset from the middle row by a distance of 0.5*X1-X2, whereby the distance X2 results from the following formula: 0 .5 times the height of the nozzle strip times the tangent of the inclination angle of the respective longitudinal axis of the nozzle opening. This slightly deviates from such a symmetry of directly adjacent nozzle openings compared to the arrangements from alternative A.
  • nozzle openings within the middle row - seen in the longitudinal direction of the row and thus in the length extension (X) of the nozzle strip - are each arranged spaced apart from one another by a distance X3, the nozzle openings being The remaining two rows within the row in question are alternately spaced apart by the distance 2*X3 and 4*X3, so that the nozzle openings of directly adjacent rows are not directly opposite one another when viewed in the direction of the width extension (Y) of the nozzle strip, and that individual nozzle openings are directly adjacent to one another Rows always have the same distance X3 from one another in the length extension (X) of the nozzle strip. This always results in equidistant distances from nozzle opening to nozzle opening, whereby the impact of the fluid jets on the material web is standardized and thus the turbulence along the entire web width of the material web is improved.
  • nozzle openings in the middle row are alternately shifted towards one of the two rows along the width extension (Y) of the nozzle strip. This results in an even better, namely square, distribution of the impact points over the full width of the material web to be solidified.
  • the nozzles of the nozzle strip can be arranged so that in at least two rows of nozzles the nozzles form a square, rectangle or diamond, the longitudinal axes of the nozzles being aligned with points of a virtual circle on the plane of the material web, which is within the square or Rectangle is arranged.
  • the arrangement of the nozzles does not have to be on the corner points of the square or rectangle, but can be arranged on one of the outer edges.
  • a twist is generated, which improves the turbulence of the fibers among themselves and thus the isotropy of the material web, at least on the surface.
  • the swirl generated changes from nozzle arrangement to nozzle arrangement in a clockwise and counterclockwise direction.
  • the present invention also relates to a system for solidifying a material web, comprising at least one nozzle bar and one that conducts fluid connectable nozzle strips for generating fluid jets for hydrodynamic solidification of the material web, the nozzle strip being designed according to the invention. Further measures improving the invention are shown in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figures.
  • Fig. 1 shows a highly schematic, partially sectioned side view of a system 1 according to the invention for solidifying a material web 2, comprising a nozzle bar 3 and a nozzle strip 4 according to the invention.
  • a material web 2 is transported on a rotating belt 7 and solidified by means of fluid jets 6.
  • the nozzle bar 3 has a nozzle strip 4 with two rows of nozzle openings 5.
  • the nozzle bar 3 is fluidly connected to a reservoir of fluid, such as water, for example with the interposition of pumps (not shown).
  • a nozzle strip 4 is arranged interchangeably.
  • the fluid under pressure reaches the nozzle strip 4 via the nozzle bar 3. From there it emerges from a large number of nozzle openings 5 arranged in the nozzle strip 4, which are designed as oblique bores.
  • the fluid forms a large number of fluid jets 6 at the outlet of the nozzle openings 5 from the nozzle strip 4. These act on the material web 2 passing underneath to hydrodynamically solidify it.
  • a suction device 8 for removing the fluid penetrating the material web 2.
  • FIG. 2a to 2d each show a sectional view of the nozzle strip according to section AA Fig. 1 the four different alternatives A to D of the invention mentioned at the beginning.
  • This sectional view in the figures mentioned of the prismatic nozzle strip 4 also corresponds to the XY plane, where The nozzle openings 5 are indicated as circles in the figures.
  • the nozzle strip has three parallel rows of nozzles 5, namely the first row R1, the second or middle row R2 and the third row R3.
  • a large number of nozzles 5 are assigned to each row of nozzles, with only a maximum of 5 nozzles in a row being shown here and in the following figures.
  • the nozzles are named according to the rows, i.e.
  • the nozzle openings 5 are each in two ( Fig. 2d ) or three ( Fig. 2a to 2c ) - here arranged in parallel rows.
  • the arrows following the circles should represent the longitudinal axes L of the respective nozzle openings 5: Since the nozzle openings 5 are designed as oblique bores, one must imagine their course corresponding to the longitudinal axis L.
  • the arrows can be understood here as vectors. These vectors correspond to projections of the unit vectors, which describe the respective longitudinal axis L as a straight line in space, onto the XY plane.
  • Fig. 4 The course of the oblique bore is indicated in a section A1-A1, and the angle of inclination of the longitudinal axis relative to the vertical (lower part) is also indicated.
  • nozzle strip According to the illustration in Fig. 2a This is achieved by defining the nozzle strip according to the features of claim 6.
  • the longitudinal axes L of the nozzle openings 5.11, 5.22, 5.31 and 5.21 are partly shown as lines of a single-shell hyperboloid (see bold solid lines in Fig. 3 ) to understand.
  • the latter can be achieved by rotating the longitudinal axis L of the nozzle opening 5 about a center 5.5 - for example, which lies between the nozzle openings 5.11, 5.22, 5.31 and 5.21 and which can be an axis of symmetry.
  • the remaining longitudinal axes L of the nozzle openings 5.22, 5.31 and 5.21 are created from 90 ° rotations of the longitudinal axis L of the nozzle opening 5.11 about this center 5.5.
  • This special symmetrical arrangement gives the fluid jets emerging from the nozzle openings a twist that runs to the right around the center 5.5 (see also the lower part of the longitudinal axes L of the Figure 3 , with an excessive number of longitudinal axes shown here). If you look in the Fig. 2a further to the right, then you will notice that the neighboring group of nozzle openings 5.12, 5.23, 5.32 and 5.22 is a mirror image of the nozzle openings 5.11, 5.22, 5.31 and 5.21 just described. The twist runs to the left.
  • the outer two rows R1, R3 are minimally offset from the inclination of the fluid jet 6 at a distance X1 from the nozzle openings 5.
  • the offset refers to the distance between the center of the nozzle opening on the top of the nozzle strip and the center of the nozzle opening on the bottom of the nozzle strip.
  • the first row R1 is offset from the second and middle row R2 by a distance of 0.5*X1+X2 and the third row R3 by a distance of 0.5*X1-X2, with the distance X2 increasing
  • the following formula results in: 0.5 times the height of the nozzle strip 4 times the tangent of the inclination angle of the respective longitudinal axis the nozzle opening 5.
  • FIG. 2c the third alternative C of the invention is described when providing three rows of nozzle openings 5.
  • the nozzle openings 5.21, 5.22, 5.23, 5.24 within the second and middle row R2 - seen in the longitudinal direction of the row R2 and thus in the length extension (X) of the nozzle strip - are each at a distance of 3x X3 from one another.
  • the center 5.5 of a swirling unit is now formed by nozzles 5.11, 5.22, 5.31, 5.21 arranged offset from one another, which are arranged in the longitudinal direction X of the nozzle strip 4 by the distance X3.
  • the nozzle opening 5.21 is arranged at a distance X3 from the nozzle opening 5.11, this at a distance X3 from the nozzle opening 5.31 and this at a distance X3 from the nozzle opening 5.22.
  • the nozzle openings of the remaining two rows within the relevant row R1, R3 are arranged alternately at a distance of 1x X3 and 3x X3, so that the nozzle openings of directly adjacent rows R1, R2; R2, R3 are not directly opposite each other when viewed in the direction of the width extension (Y) of the nozzle strip, and that individual nozzle openings in directly adjacent rows always have the same distance X3 from one another when viewed in the length extension (X) of the nozzle strip.
  • FIG. 2d the alternative D of the nozzle strip 4 according to the invention described at the beginning.
  • alternative C Fig. 2c The nozzle openings 5 of the middle row R2 have been moved one after the other and alternately into the first row R1 or third row R3, which lie on both sides of the middle row R2. There are therefore only two rows R1, R3 of nozzle openings 5. This measure also serves to improve the symmetry of the impact of the fluid jets on the material web 2.
  • Figure 3 shows the effect of the fluid jets 6 striking a material web 2 through the arrangement of the nozzle openings 5. Due to the arrangement according to the invention Nozzle openings 5 create a swirl around a virtual center 5.5 of the nozzle openings. This twist leads to better turbulence of the fibers and thus to increased solidification of the material web 2. The twist is generated without the nozzles themselves having to rotate. This avoids a complex construction.
  • Such a symmetrical arrangement of the nozzle openings according to the invention describes the longitudinal axes L of immediately adjacent nozzle openings - including those across directly adjacent rows - as lines of a single-shell hyperboloid.
  • Figure 4 shows a section through a nozzle opening 5 along the section plane A1-A1 from the Figures 2a - 2d .
  • the nozzle strip 4 is prismatic and has a length (X), width (Y) and height (Z) extent.
  • the designations X, Y, Z correspond to the axis designations of the same name in a Cartesian coordinate system.
  • the respective longitudinal axes L of the corresponding nozzle openings are at an angle of inclination ⁇ of 1° to 20°, preferably 1° to 10°, particularly preferably 1, relative to a perpendicular to an XY plane, which is spanned by the width and length extension of the nozzle strip ° inclined to 5°.
  • This angle has proven to be particularly advantageous in order to generate particularly favorable swirling of the fibers of the material web 2.
  • all oblique bores and thus all longitudinal axes of the nozzle openings 5 have the same angle of inclination.
  • the at least two rows R1, R2 are preferably arranged spaced apart from one another in the width extension (Y) of the nozzle strip.
  • the rows can be arranged parallel or at an angle to one another.
  • the length X of the nozzle strip essentially corresponds to the width of the material web 2.
  • FIG. 5 to 7 an arrangement of two rows R1, R2 of nozzles of a nozzle strip 4 is shown, the nozzle openings 5 of which are directed towards a virtual circle or ellipse.
  • the virtual circle or ellipse lies in the plane of the material web, i.e. by the distance hit.
  • the nozzles of the first 5.11, 5.12 and second row 5.21, 5.22 have a distance in the X direction of X1.
  • the distance between the rows of nozzles is X3.
  • the distances X1 and Or the fluid jets 6 strike tangentially on a virtual path of a circle or an ellipse, which lies in the plane of the material web 2.
  • the fluid jets 6 create a clockwise or counterclockwise twist in the plane of the material web 2, with which the fibers intertwine with one another in addition to the known swirling.
  • the effect is contrary to the previous orientation of the fibers, which are arranged on one side in the production direction (MD direction) in accordance with the production direction of the material web 2 in the MD/CD ratio.
  • Figure 5 The groups of nozzles alternately produce a clockwise or counterclockwise twist on the material web 2.
  • the cutting plane AA is in Figure 7 shown.
  • the twist direction changes in the direction of the working width (X direction).
  • the size of the virtual circle is determined by the distance X4 between the nozzle strip 4 and the surface of the material web 2, by the inclination angle ⁇ of the nozzle opening in the nozzle strip 4 and by one of the angles ⁇ or ⁇ , and by the angle ⁇ .
  • a symmetrical arrangement of the virtual circle between the nozzles 5.11, 5.12, 5.21, 5.22 is shown.
  • the virtual circle can also be arranged asymmetrically within the rectangle X1, X3, in which the angles ⁇ or ⁇ and ⁇ are varied.
  • the angle ⁇ represents the orientation of the fluid jet 6 or the inclination of the nozzle opening 5 to the center of the virtual circle or the ellipse.
  • the angle ⁇ represents the orientation of the fluid jet 6 or the inclination of the nozzle opening 5 to the longitudinal axis of the nozzle bar 3, i.e. to X direction.
  • the angle ⁇ represents the orientation of the fluid jet 6 or the inclination of the nozzle opening 5 to the production direction, i.e. to the Z direction.
  • the angles ⁇ and ⁇ together form a right angle.
  • the alignment of the nozzle openings 5 according to the Figures 2a to 3 always takes place in the direction of the longitudinal axis of the nozzle bar 3 (X direction) and in the production direction of the material web 2 (Y direction).
  • the fluid jets created in this way are parts of the lines of a hyperboloid.
  • the alignment of the nozzle openings 5 according to the Figures 5 to 7 takes place within a rectangle or square of nozzles 5.11, 5.12, 5.21, 5.22, and are all directed inwards towards a virtual circle, with the rays hitting the virtual circle tangentially.
  • four nozzles 5.11, 5.12, 5.21, 5.22 are inclined to the common center of a virtual circle.
  • the circle lies in the plane of the material web 2 to be processed at a distance X4 mm below the nozzle strip 4.
  • four fluid jets produce a swirl in the plane of the material web 2 Clockwise, which swirls the fibers together.
  • the four other nozzles 5.13, 5.14, 5.23, 5.24 arranged next to it produce a suitable inclination as in the Figure 5 a counterclockwise twist.
  • the 4 neighboring rays in the middle of Figure 5 are inclined in such a way that a counterclockwise twist is created.
  • the other four nozzles 5.15, 5.16, 5.25, 5.26 in Figure 5 in turn create a clockwise twist.
  • the twist direction is therefore seen alternately in the direction of the working width or longitudinal axis of the nozzle bar 3 (X direction).
  • the nozzles 5.11, 5.22, 5.31 and 5.21 from three rows of nozzles R1, R2, R3 can lie on the edges or lines of a square or rectangle and their longitudinal axes L can also be aligned with a virtual circle with the center 5.5.
  • the invention does not require that the nozzles have to be arranged on the corner points of a square. They can also be arranged on the corner points of an arbitrarily arranged rhombus or on the outer edges of a square, rectangle or rhombus, whereby the points struck by the fluid jets on the virtual circle or ellipse in the plane of the material web lie within this geometric shape in order to achieve the desired To create a swirl effect.
  • the angle ⁇ is the same for all nozzle openings.
  • the distance X3 can also be smaller or larger than the distance X1.
  • the angles ⁇ or ⁇ and ⁇ can be adjusted so that the impact points of the four fluid jets 6 lie on a virtual circle or an ellipse.
  • the nozzle opening 5 of all nozzles can be 0.12 mm and the distances X1, X2, X3 can each be 1.5 mm.
  • the diameter of the virtual circle is according to the exemplary embodiments Figures 5 to 7 smaller than dimension X1, at least 0.5 mm. If the diameter of the virtual circle becomes smaller, no significant swirl is generated at these dimensions because the fluid jets almost all hit one point.
  • the angle of inclination ⁇ is in the range from 1° to 20°, preferably from 1° to 10°, particularly preferably from 1° to 5°. This angle has proven to be particularly advantageous in order to produce particularly favorable swirling of the fibers of the material web.
  • the size of the angle of inclination depends, among other things, on the distance of the nozzle strip from the surface of the web or material web. For short distances, for example X4 to 10 mm, the angle of inclination can be chosen larger. For large distances, for example X4 > 25 mm, an angle of inclination in the range of 1° to 5° can be advantageous. Of course, the distances between the nozzle openings and one another also play a role here.

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Claims (14)

  1. Bande de buses (4) pour la production de jets de fluide (6) en vue de la consolidation hydrodynamique d'une bande de matériau (2), avec une pluralité d'orifices de buses (5) agencés à distance les uns des autres en au moins deux rangées (R1, R2, R3) pour la projection des jets de fluide (6) sur la bande de matériau (2), les orifices de buses (5) étant réalisés sous la forme d'alésages obliques dans la bande de buses (4), de sorte que les jets de fluide (6) sortent de la bande de buses (4) le long des axes longitudinaux (L) des orifices de buses (5) respectifs, la bande de buses (4) étant réalisée de telle sorte que les axes longitudinaux (L) des orifices de buses (5) directement adjacents les uns des autres d'une seule et même rangée et les axes longitudinaux (L) des orifices de buses (5) directement opposés les uns aux autres de rangées directement adjacentes s'étendent respectivement en oblique les uns par rapport aux autres.
  2. Bande de buses (4) selon la revendication 1, caractérisée en ce que la bande de buses (4) présente une extension en longueur (X), en largeur (Y) et en hauteur (Z), et les axes longitudinaux respectifs (L) des orifices de buses (5) correspondants sont inclinés par rapport à une perpendiculaire à un plan XY, qui est délimité par l'extension en largeur et en longueur de la bande de buses (4), d'un angle d'inclinaison (α) de 1° à 20°, de préférence de 1 à 10°, de manière particulièrement préférée de 1 à 5°, les au moins deux rangées étant de préférence agencées à distance l'une de l'autre selon l'extension en largeur (Y) de la bande de buses (4).
  3. Bande de buses (4) selon la revendication 1 ou 2, caractérisée en ce que les axes longitudinaux (L) d'orifices de buses (5) se succédant directement dans une rangée respective sont réfléchis dans leur orientation par rapport à un plan de symétrie respectif disposé entre deux orifices de buses (5) adjacents de la rangée respective ou sont réfléchis ponctuellement par rapport à un point de symétrie disposé dans ce plan, de sorte qu'il en résulte, d'un orifice de buse (5) à un autre orifice de buse (5) à l'intérieur d'une rangée, des alésages obliques de la bande de buses (4) orientés de façon alternée et en miroir.
  4. Bande de buses (4) selon la revendication 2 ou 3, caractérisée en ce que les axes longitudinaux (L) de deux orifices de buses (5) directement adjacents de rangées directement adjacentes se trouvent dans des plans qui sont en biais ou orthogonaux l'un par rapport à l'autre et sont de préférence tous deux perpendiculaires au plan XY.
  5. Bande de buses (4) selon l'une des revendications 1 à 4, caractérisée en ce que les orifices de buses (5) à l'intérieur d'une rangée - vus dans la direction longitudinale de la rangée et donc dans l'extension en longueur (X) de la bande de buses (4) - sont espacés d'une distance (X1) les uns des autres.
  6. Bande de buses (4) selon l'une des revendications 2 à 5, caractérisée en ce que des rangées directement adjacentes d'orifices de buses (5) sont disposées de façon décalée les unes par rapport aux autres de la moitié de la distance (X1) dans la direction longitudinale de la rangée, c'est-à-dire vues dans l'extension en longueur (X), la distance (X1) correspondant à un multiple du diamètre des orifices de buses (5), de sorte que les orifices de buses (5) de rangées directement adjacentes ne sont pas directement opposés les uns aux autres vus dans la direction de l'extension en largeur (Y) de la bande de buses (4).
  7. Bande de buses (4) selon la revendication 6, caractérisée en ce que, lorsqu'il est prévu trois rangées d'orifices de buses (5), les orifices de buses (5) de la première et de la troisième rangée (R1, R3), qui sont agencés de part et d'autre de la rangée centrale (R2) - vus dans la direction longitudinale de la rangée et donc dans l'extension en longueur (X) de la bande de buses (4) - sont décalés par rapport à la rangée centrale (R2), la première rangée (R1) étant décalée d'une distance de 0,5*X1+X2 et la troisième rangée (R3) étant décalée d'une distance de 0,5*X1-X2 par rapport à la deuxième rangée centrale (R2), la distance X2 étant calculée selon la formule suivante : 0,5 fois la hauteur de la bande de buses (4) multipliée par la tangente de l'angle d'inclinaison de l'axe longitudinal (L) respectif de l'orifice de la buse (5).
  8. Bande de buses (4) selon l'une des revendications 2 à 4, caractérisée en ce que, lorsqu'il est prévu trois rangées d'orifices de buses (5), les orifices de buses (5) à l'intérieur de la rangée centrale (R2) - vus dans la direction longitudinale de la rangée et donc dans l'extension en longueur (X) de la bande de buses (4) - sont agencés en étant espacés les uns des autres d'une distance n*X3, les orifices de buses (5) des deux rangées restantes (R1, R3) étant espacés à l'intérieur de la rangée concernée en alternance de la distance (n-1)*X3 et (n+1)*X3, de sorte que les orifices de buses (5) de rangées directement adjacentes, vus dans le sens de l'extension en largeur (Y) de la bande de buses (4), ne sont pas directement opposés les uns aux autres, et que des orifices de buses (5) individuels de rangées directement adjacentes l'une de l'autre présentent toujours la même distance X3 l'une par rapport à l'autre, vues dans l'extension en longueur (X) de la bande de buses (4), n étant de préférence égal à trois.
  9. Bande de buses (4) selon la revendication 8, caractérisée en ce que certains orifices de buses (5), ou tous les orifices de buses (5), de la rangée centrale sont décalés en alternance vers l'une des deux rangées le long de l'extension en largeur (Y) de la bande de buses (4).
  10. Bande de buses (4) selon la revendication 1 ou 2, caractérisée en ce que dans au moins deux rangées (R1, R2, R3) de buses, les buses forment un carré ou un rectangle, les axes longitudinaux (L) des buses étant alignés sur des points d'un cercle virtuel situé sur le plan de la bande de matériau (2) et agencé à l'intérieur du carré ou du rectangle.
  11. Bande de buses (4) selon la revendication 10, caractérisée en ce qu'au moins quatre buses (5.11, 5.12, 5.21, 5.22) de deux rangées (R1, R2) sont orientées tangentiellement à un cercle virtuel qui se trouve à l'intérieur de la disposition des au moins quatre buses (5.11, 5.12, 5.21, 5.22) dans le plan de la bande de matériau (2).
  12. Bande de buses (4) selon l'une quelconque des revendications 10 à 11, caractérisée en ce que chaque buse est disposée selon un angle (δ) formé entre une ligne reliant la buse au centre (5.5) du cercle virtuel et une tangente de la buse au cercle virtuel dans le plan de la bande de matériau (2).
  13. Bande de buses (4) selon l'une des revendications 10 à 11, caractérisée en ce que l'inclinaison de chaque buse est disposée selon un angle (β) et (γ), l'angle (β) résultant de l'inclinaison de l'orifice de buse (5) par rapport à l'axe longitudinal de la barre de buses (3), c'est-à-dire par rapport à la direction X, et l'angle (γ) résultant de l'inclinaison de l'orifice de buse (5) par rapport à la direction de production, c'est-à-dire par rapport à la direction Z.
  14. Installation (1) pour la consolidation d'une bande de matériau (2), comprenant au moins une barre de buses (3) et une bande de buses (4) apte à être reliée à celle-ci de manière conductrice de fluide et destinée à produire des jets de fluide (6) pour la consolidation hydrodynamique de la bande de matériau (2), la bande de buses (4) étant réalisée selon l'une des revendications précédentes.
EP22155647.5A 2021-03-04 2022-02-08 Bande à buses destinée à la génération des jets de fluide permettant de consolider de manière hydrodynamique une bande de matière, ainsi qu'installation de consolidation d'une telle bande Active EP4053320B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021105196.7A DE102021105196A1 (de) 2021-03-04 2021-03-04 Düsenstreifen zur Erzeugung von Fluidstrahlen zur hydrodynamischen Verfestigung einer Materialbahn sowie Anlage zur Verfestigung einer solchen

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EP4053320A1 EP4053320A1 (fr) 2022-09-07
EP4053320B1 true EP4053320B1 (fr) 2023-11-08

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EP (1) EP4053320B1 (fr)
CN (1) CN115029868A (fr)
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SE543963C2 (en) * 2020-02-28 2021-10-12 Baldwin Jimek Ab Spray applicator and spray unit comprising two groups of spray nozzles

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JP3172306B2 (ja) * 1992-12-15 2001-06-04 日本バイリーン株式会社 ノズルプレート
JP3142094B2 (ja) * 1992-12-15 2001-03-07 日本バイリーン株式会社 ノズルプレート
JP2000290863A (ja) * 1999-04-05 2000-10-17 Uni Charm Corp 不織布製造装置
US6877196B2 (en) 2000-08-04 2005-04-12 E. I. Du Pont De Nemours And Company Process and apparatus for increasing the isotropy in nonwoven fabrics
DE102004036906A1 (de) 2004-07-29 2006-03-23 Fleissner Gmbh Vorrichtung zur Behandlung von insbesondere einem Gewebe mittels hydrodynamischer Vernadelung
DE102005060615A1 (de) * 2005-12-19 2007-06-21 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Verfestigen einer laufenden Vliesbahn sowie ein Vlies
JP2016121411A (ja) * 2014-12-24 2016-07-07 日本ノズル株式会社 不織布製造装置

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CN115029868A (zh) 2022-09-09
EP4053320A1 (fr) 2022-09-07

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