EP2459320B1 - Buse d'application pour colles visqueuses - Google Patents

Buse d'application pour colles visqueuses Download PDF

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Publication number
EP2459320B1
EP2459320B1 EP10737500A EP10737500A EP2459320B1 EP 2459320 B1 EP2459320 B1 EP 2459320B1 EP 10737500 A EP10737500 A EP 10737500A EP 10737500 A EP10737500 A EP 10737500A EP 2459320 B1 EP2459320 B1 EP 2459320B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
flow
applicator
adhesive
nozzle according
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.)
Not-in-force
Application number
EP10737500A
Other languages
German (de)
English (en)
Other versions
EP2459320A1 (fr
Inventor
Thomas Haack
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.)
Bona GmbH Deutschland
Original Assignee
Bona GmbH Deutschland
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Filing date
Publication date
Application filed by Bona GmbH Deutschland filed Critical Bona GmbH Deutschland
Publication of EP2459320A1 publication Critical patent/EP2459320A1/fr
Application granted granted Critical
Publication of EP2459320B1 publication Critical patent/EP2459320B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B05C17/00509—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the bayonet type

Definitions

  • the present invention relates to an application nozzle for viscous adhesives having a nozzle housing comprising an interior, with an applicator edge, along which a plurality of nozzle openings are arranged, and having at least one inlet opening, which is opposite to the applicator edge, wherein the interior of the nozzle housing from the inlet opening to the nozzle openings, seen in the direction of the applicator edge, expanded, and wherein in the interior of the nozzle housing means are provided to guide the adhesive from the inlet opening to the nozzle openings.
  • the invention relates to special nozzles with which highly viscous adhesives can be applied as a multiple strand in rib form or as a film with embossed ribs on a flat substrate.
  • the respective application nozzle is used in conjunction with commercially available or special applicators.
  • the supply of the adhesive can be effected by adhesive containing cartridges or tubular bag. Also conceivable is a supply from a separate storage container by means of suitable pipes or hoses or combinations thereof.
  • Floor coverings and parquet are often glued over the entire surface of a floor.
  • the floor covering or parquet adhesives are usually applied in pasty form to the subfloor and then distributed over the entire surface with a so-called tooth spatula on the subfloor.
  • Such a wooden floor is for example in the DE 199 28 030 A1 described.
  • Flooring and parquet adhesives are applied "surface" and therefore a multi-orifice die is needed which produces an adhesive pattern on the substrate that is the same or similar to that produced with a standard notched trowel.
  • Nozzles for applying adhesive in multiple strands are described, for example, in US Pat US 5,882,133 and the WO 2004/065023 A1 described.
  • the WO 2004/065023 A1 describes a device for applying glue, which has two or three glue cylinders, wherein at the outlet of an adhesive strip is attached with a plurality of discharge openings.
  • the individual channels in the glue bar from the outlet of the glue cylinder to the discharge openings are fan-shaped and thus have different lengths.
  • Out JP 11-290 746 A a device with multiple discharge ports is known.
  • the device In order to standardize the dispensing amount at all dispensing ports, the device has a plurality of feed arms leading to the individual dispensing ports, all of equal length. This is achieved by a special cascade arrangement in which the Zustoryarmen same arm length of the previous cascades twice the number of the same additional cascade arms is added by coupling.
  • a nozzle with multiple discharge openings is attached to a reservoir for the adhesive.
  • the reservoir may e.g. consist of a cartridge or a cylinder for receiving tubular film bags.
  • the adhesive is thereby discharged through the nozzle by means of compressed air, mechanically or electrically.
  • the initial adhesion is desired after joining the substrates.
  • the initial adhesion can be achieved inter alia by a change in the rheology, in particular by the product is formulated higher viscous or with a higher yield point.
  • Such changes in rheology lead to the "spreading" carried out by the fabricator with a standard notched trowel being said to be “heavy”, resulting in a significant load on the respective leading hand or arm.
  • Such high Viscosities or yield points are therefore generally rejected by the processor and are therefore not available on the market.
  • the apparatuses of the state of the art in this case have nozzles in which radiate from the adhesive reservoir several channels that open into the outlet openings.
  • the geometry of the channels during distribution to the individual outlet openings results in different flow paths of the adhesive. This leads to an irregular application of adhesive, which can be manipulated by the processor by closing individual outlet openings, whereby a non-uniform bond can result.
  • the outlet openings have a round cross section, which leads to a corresponding cross section of the strands.
  • WO 00/69 571 and BE 10 16 978 each reveal an applicator nozzle for adhesives.
  • the respective application nozzle has an inlet opening and a plurality of nozzle openings, via which the adhesive emerges from the application nozzle. Between the inlet opening and the nozzle openings a plurality of flow body are provided, which are arranged and formed such that the adhesive exits the nozzle openings uniformly.
  • the object of the present invention is to specify an application nozzle which enables a uniform application of parallel adhesive strands, in particular with regard to the amount of adhesive emerging from each application nozzle in time.
  • an applicator for viscous adhesives with the features mentioned, which is characterized in that the means comprise at least one flow body having a leading edge and a spoiler edge and is oriented such that it, from the flow of the Adhesive flows around on all sides, evenly divides the volume flow of the adhesive taking into account the different flow paths from the inlet opening to the individual nozzle openings.
  • Adhesives with a viscosity of 80 Pa ⁇ s at a shear rate of 5 1 / sec can barely be applied by hand using a toothed spatula.
  • the device and the nozzle are therefore particularly suitable for the application of higher-viscosity adhesives, which offer particular advantages in the initial adhesion.
  • a high initial adhesion is, as with any other bonding also desired.
  • the applied amount of adhesive in the individual strands over the entire width of the nozzle is constant.
  • the cavity in the interior of the nozzle is interrupted by at least one flow body, but preferably by a plurality of flow bodies of different sizes, through the flow of which the passing adhesive is distributed uniformly over the discharge openings.
  • the nozzle may have triangular or quadrangular openings so that free-standing adhesive strands of triangular or quadrangular cross-section are formed when the adhesive is applied.
  • the outlet openings should be square.
  • the corners of the outlet openings may have a radius of curvature.
  • edges of the outlet openings do not have to be straight, but can also be bent. Since the adhesive mass can partially expand or contract after exiting the nozzle, straight edges of the outlet opening create convex edges on the adhesive strands, which can be compensated if the outlet openings have concave edges.
  • the application nozzle can be part of a device with at least one adhesive container on which this application nozzle is placed.
  • the application nozzle is also suitable for devices that apply a two-component adhesive that is mixed in or in front of the nozzle.
  • Such an application nozzle can be arranged in conjunction with a container so that container and application nozzle can be rotated against each other, so that an individual working position is adjustable.
  • the application nozzle as described here, is particularly suitable for adhesive viscosities greater than 80 Pa ⁇ s at a shear rate of 5 1 / sec
  • the flow body should divide the volume flow of the adhesive such that emerge from the individual nozzle openings equal amounts of adhesive per unit time.
  • certain flow bodies can also serve to mix the adhesive well, especially if it is a two-component adhesive, as it is often used.
  • a preferred cross section for the flow bodies is an oval or elliptical cross section. These flow bodies should be aligned in the nozzle housing so that they are flowed by the adhesive on the narrow side. Such a cross-section ensures optimal guidance of the adhesive flow, without substantial dead zones, in particular on the flow separation side of the flow body arise.
  • a drop-shaped cross-section of the flow body viewed in the direction of flow of the adhesive, be advantageous, wherein the flow body should be aligned so that they are flowed by the adhesive on the rounded side.
  • nozzle housing In the nozzle housing should be arranged at least two flow body, which are distributed over the housing interior.
  • a multiplicity of flow bodies should be provided which, as seen in the flow direction of the adhesive, are staggered in several rows.
  • the flow bodies should be staggered in rows with a smaller number of flow bodies having a large cross section to a larger number of flow bodies with a small cross section, wherein the flow body with a large cross section are arranged closer to the inlet opening and arranged the flow body with a small cross section closer to the nozzle openings are.
  • the flow bodies of the individual rows viewed in the direction of the flow direction of the adhesive should be arranged offset to one another, so that the adhesive flow, after it has flowed through the gap between two flow bodies, meets at least one further flow body, which in turn at least two Divide sub-streams.
  • the triangular cross section facilitates the insertion and pressing of the parquet rods, especially if they have tongue and groove connection.
  • a uniform adhesive bed of parallel adhesive strips is to be applied to an adhesive surface using such application nozzles.
  • These adhesive strands are then possibly crushed when gluing a component in the adhesive area.
  • a thin adhesive film is present between the adhesive strands. so that thereby the entire surface is coated and this coating acts as a water vapor barrier, so that the wood is protected from excessive swelling by evaporation of water from a too wet screed.
  • adjacent nozzle openings are connected by a narrow nozzle gap, which has a certain gap height. Over this gap then a small amount of glue in the manner of an adhesive film is also applied between the adhesive strands.
  • This thin adhesive film formed between the adhesive strands also acts after curing as a water vapor barrier. Experiments have shown that this effect can be achieved even without a defined gap, if you do not screw the two halves quite so tightly together.
  • the individual nozzle openings are connected to one another via such a nozzle gap at their wider lower edge.
  • an application edge should be formed on the side that forms the underside, with which the application nozzle is guided along an application surface.
  • the above-described nozzle gap is then placed on this side, which forms the application edge.
  • the nozzle housing should be made up of at least one upper part and one lower part.
  • the upper part and the lower part lie on each other along the nozzle openings.
  • the nozzle openings can be formed in the form of slots either in the upper part or the lower part and that the respective other part covers the slots, so that the nozzle openings result.
  • a suitable dimensioning of the flow body with an oval or elliptical cross section is obtained when the ratio of the minor axis to the major axis of the cross sections of the flow body between 1: 1 and 1:20, preferably between 1: 2 and 1:15, most preferably between 1: 3 and 1: 5.
  • the ideal configuration of the shape of the flow body, preferably the elliptical cross sections of the flow body, and their staggering seen in the flow direction of the adhesive depends on the geometry of the interior of the nozzle housing, in particular how much the nozzle housing widens from the inlet opening to the nozzle openings ,
  • At least part of the interior surface of the nozzle body may be provided with a groove structure. These additional grooves can influence the flow of the adhesive in the nozzle, inter alia, the mixing of the adhesive can be supported.
  • the flow body can simultaneously take over the function of spacers between the upper part and lower part of the nozzle housing.
  • Upper part and lower part of the nozzle housing can be bolted together or otherwise connected in the region of such serving as spacers flow body.
  • a sieve is arranged in the interior of the application nozzle in front of the nozzle openings.
  • This sieve serves to guide and separate granules contained in an adhesive in such a way that this granulate exits only in a region lying towards the application edge.
  • Such a screen is preferably used in an application nozzle, which has a nozzle gap between the individual nozzle openings, as described above. In conjunction with such a die gap, the granules are guided so that this granules only can pass the nozzle gap. The adhesive strands formed are then free of this proportion of granules in the upper area.
  • the gap is set at least to the diameter of the granules.
  • the application nozzle which in FIG. 1 is suitable for the application of viscous adhesives over a relatively wide area in the form of adhesive strands.
  • This application nozzle comprises a nozzle housing 1 with an upper part 2 and a lower part 3.
  • Oberteil 2 and lower part 3 are in an enlarged view, each with a view of the inside, in the FIGS. 2 and 3 shown.
  • Upper part 2 and lower part 3 surround an inner space 4.
  • the entire application nozzle has a triangular or trapezoidal shape in plan view with an inlet opening 5 on the narrow side.
  • an application edge 6 is formed, which has a smooth, seen in cross section tapered shape.
  • the corresponding edge 7 of the upper part 2 is provided with V-shaped cutouts 8, which then, when upper part 2 and lower part 3 are joined, give triangular nozzle openings.
  • FIGS. 1 and 2 show, along the edge 7 evenly distributed a plurality of these V-shaped cutouts 8 are provided.
  • a plurality of flow body 9, 10 and 11 are present, which have an oval or elliptical cross-section.
  • These flow bodies each have a leading edge 12 and a tear-off edge 13 at the narrow ends. They are aligned in the interior 4 such that the major axis 14 of the elliptical cross-section of the flow bodies 9, 10 and 11, which are shown in FIG FIG. 3 is indicated on the basis of the mean flow body 9, is aligned in the flow direction of the entering through the inlet opening 5 in the interior 4 volume flow of the adhesive.
  • the elliptical or oval cross section of the flow bodies 9, 10 and 11 ensures that a uniform flow around the flow body is present.
  • the respective flow bodies 9, 10 and 11, which have a different cross section, are arranged in rows transversely to the flow direction of the adhesive, which is indicated by an arrow 15, the first row comprising the flow body 9 with the largest cross section, followed by the series with the flow bodies 10 with a medium-sized cross section and the row of the flow body 11 with the smallest cross-sectional dimensions. Furthermore, only one flow body 9 is present in the first row, while the second row comprises two flow bodies 10 and the third row has seven flow bodies 11. Furthermore, the flow bodies 9, 10 and 11 of the successive rows are staggered so that they are offset from each other transversely to the flow direction (arrow 15).
  • the flow bodies 9, 10 and 11 ensure that the volume flow of the adhesive entering via the inlet opening 5 into the interior 4 is distributed uniformly over the opening cross section to the nozzle openings 8. That is, the adhesive is divided at the flow body 9, flows to the two flow bodies 10 of the next row and is divided there again into four adhesive streams to the flow bodies 11 of the last row.
  • the number of individual flow body 9, 10 and 11 in the various rows is shown only as an example and must be adapted to the particular circumstances. By the appropriate choice of the number of flow body and the cross-sectional dimensions can be achieved that in terms of time through the nozzle openings 8 equal volumes of adhesive leak.
  • the ratio of width to length of the ellipse of the cross section of the flow body 9 is greater, since there the initial adhesive flow is first distributed to the sides in order to build up a higher pressure there.
  • the flow bodies 10 in the next row are then arranged offset, so that there again the incoming adhesive flow is divided.
  • the flow bodies 11 in the third row are in the interstices of the preceding one for the same reason Row arranged.
  • the outlet openings 8 are located between the flow bodies 11, ie the flow bodies 11 are not located directly in front of an outlet opening 8, but between them.
  • the cross-sectional dimensions of the flow bodies 9, 10 and 11 should be selected such that a ratio of small semiaxis, in FIG. 3 denoted by the reference numeral 16, to about 1: 3 to large semi-axis 14 on the inlet side of the adhesive for the flow body 9 up to about 1: 5 for the flow body 11 on the side of the nozzle openings 8 results.
  • the ratio could also vary for the flow body 11 on the side of the nozzle openings 8 up to 1:20.
  • the flow body 9 and 10 can serve with the large cross-sectional dimensions as spacers for the upper part 2 attached to the lower part 3.
  • the upper part 2 can be screwed to the lower part 3 in the region of these flow bodies 9 and 10 by screw elements, which are generally designated by the reference numeral 17.
  • the parts of the nozzle could also be held together by clamps.
  • the flow body 9 and 10 are divided with a large cross-section approximately in the middle, so that these halves complement in the bolted state of the upper part 2 and lower part 3 to the respective flow bodies 9 and 10. These could also be formed only at the top or bottom.
  • the smaller flow body 11, however, are formed only on the lower part 3. Alternatively, they could also be present only on the upper part 2, or, if the dimensions allow, also be divided in the middle.
  • a cover 18 is placed, which includes a cover strip 19 at its front end. This cover 18 is held on the upper part 2 by means of the screw 17.
  • the cover strip 19 is dimensioned and aligned to cover the top of the edge 7 with the V-shaped cutouts 8.
  • a corresponding cover 20 with a cover strip 21 may be placed on the outside of the lower part 3 such that the cover strip 21 of the application edge 6 is assigned. At least the cover strip 21 may be formed of a flexible material so that it can adapt to the shape of the application surface during application of the adhesive.
  • a connecting piece 23 can be plugged onto the rear tubular end 22 of upper part 2 and lower part 3, which locks in the manner of a bayonet closure with a pin 24 and a groove guide 25. Pin 24 and groove guide 25 can also be reversed associated with the connecting piece 23 and the tubular end 22.
  • the inner surfaces of the nozzle housing 1 may be provided with a groove structure.
  • Such grooves 39 are, for example, on the inner surface of the upper part 2 of FIG. 2 available. These grooves 39 are recesses which are incorporated into the inner surface of the upper part 2.
  • This groove structure which may be formed not only on the upper part 2 but also on the lower part 3, promotes mixing of the adhesive, in particular if the adhesive is a two-component adhesive.
  • the groove structure could have a V-shaped profile, ie the grooves extend from the inlet opening 5 in a V-shaped, radially outwards, so that they also support the guidance of the adhesive to the outer nozzle openings 8.
  • FIG. 1 An exemplary dimensioning of the application nozzle, as in FIG. 1 is shown, results from the top view of the lower part 3, the in FIG. 4 is shown.
  • the nozzle housing 1 and the lower part 3 has a length 26 of 200 mm.
  • the width 27 along the application edge 6 is 250 mm.
  • the distance 28 of the center of the flow body 9 having an elliptical cross section from the application edge 6 is 80 mm
  • the distance 29 of the center of the flow body 10 from the application edge 6 is 50 mm
  • the distance 30 of the center of the flow body 11 from the application edge 6 is about 30 mm.
  • the axis ratios of the elliptical cross section of the flow bodies 9, 10 and 11, respectively, of the large half-axis 14 to the small half-axis 16, as shown in FIG. 3 for the large flow body 9 are 45 mm to 15 mm for the flow body 9, 30 mm to 11 mm for the flow body 10 and 15 mm to 3 mm for the smallest flow body 11th
  • the distance 31 of the centers of the two middle flow body 10 to each other is about 85 mm, while the distance 32 of adjacent flow body 11 is about 28 mm.
  • the dimensions given above are standard values which can correspondingly be increased or reduced proportionally in other dimensions of the application nozzle.
  • FIG. 5 shows only schematically the view of the nozzle openings, which are formed in the illustrated example, in contrast to the previously described embodiment, by rectangular cutouts 33 in the upper part 2.
  • adjacent nozzle openings 33 are interconnected by a narrow nozzle gap 34. Small amounts of adhesive can pass through these gaps 34, so that the area between two nozzle openings 33 on the application surface is also coated with a thin adhesive film.
  • the quadrangular cross section of the cutouts 33 produces adhesive strands with a quadrangular cross section on the application surface.
  • the gaps 34 may also be provided if the nozzle openings have a V-shaped cross-section.
  • FIG. 6 shows only schematically a application nozzle with a nozzle housing 1 and triangular nozzle openings 8, as is the case with the application nozzle, which in FIG. 1 is shown, and a nozzle gap 34, for example, previously based on the FIG. 5 has been described.
  • a screen 35 In the interior 4 of the nozzle housing 1 there is a screen 35. This screen 35 is inserted into the interior so that it covers only the area of the nozzle openings 8, but not the area of the nozzle gap 34.
  • Such an arrangement is used when an adhesive to be applied, which contains a granular portion 36. Due to the mesh size of the screen 35, the granular portion 36 is not passed through the screen and guided down to the die gap 34. This can be achieved on a pad, in FIG. 6 denoted by reference numeral 37, applied adhesive composition contains only the lower portion of the granular portion 36, while the upper portions of the adhesive strands 38 are free of this granules.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (22)

  1. Buse d'application pour colles visqueuses, comprenant un boîtier de buse (1) qui comprend un espace interne (4) et présente une arête d'application (6) le long de laquelle sont disposées plusieurs ouvertures de buse (8, 33), et au moins une ouverture d'entrée (5), qui est opposée à l'arête d'application (6),
    l'espace interne (4) du boîtier de buse (1) s'élargissant depuis l'ouverture d'entrée (5) vers les ouvertures de buse (8, 33), vu dans la direction de l'arête d'application (6), et
    des moyens (9, 10, 11) étant prévus dans l'espace interne (4) du boîtier de buse (1), afin de guider la colle depuis l'ouverture d'entrée (5) jusqu'aux ouvertures de buse (8, 33), et les moyens comprenant au moins un corps d'écoulement (9, 10, 11) qui présente une arête d'afflux (12) et une arête de décrochage (13) et qui est orienté de telle sorte que tout en étant parcouru de tous les côtés par le flux volumique de la colle, il divise uniformément le flux volumique de la colle depuis l'ouverture d'entrée (5) vers les ouvertures de buse individuelles (8, 33) en tenant compte des différentes voies d'écoulement,
    caractérisée en ce qu'un tamis (35) pour séparer le granulat contenu dans une colle est disposé dans l'espace interne (4) avant les ouvertures de buse (8, 33), de telle sorte que ce granulat ne sorte que dans une région située vers l'arête d'application (6).
  2. Buse d'application selon la revendication 1, caractérisée en ce que les au moins deux corps d'écoulement (9, 10, 11) divisent le flux volumique de la colle de telle sorte que des quantités de colle identiques par unité de temps sortent des ouvertures de buse individuelles (8, 33) .
  3. Buse d'application selon la revendication 1 ou 2, caractérisée en ce que les corps d'écoulement (9, 10, 11), vus dans la direction d'écoulement (15) de la colle, présentent une section transversale ovale ou elliptique.
  4. Buse d'application selon la revendication 3, caractérisée en ce que les corps d'écoulement (9, 10, 11) sont orientés de telle sorte qu'ils soient heurtés par le flux de colle sur le côté étroit (12).
  5. Buse d'application selon la revendication 1 ou 2, caractérisée en ce que les corps d'écoulement (9, 10, 11), vus dans la direction d'écoulement (15) de la colle, présentent une section transversale en forme de goutte.
  6. Buse d'application selon la revendication 5, caractérisée en ce que les corps d'écoulement (9, 10, 11) sont orientés de telle sorte qu'ils soient heurtés par l'écoulement de la colle sur le côté arrondi (12).
  7. Buse d'application selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'au moins trois corps d'écoulement (9, 10, 11) sont disposés dans le boîtier de buse (1).
  8. Buse d'application selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les corps d'écoulement (9, 10, 11) présentent des surfaces en section transversale de différentes tailles, des corps d'écoulement (9) ayant une plus grande surface en section transversale étant disposés au centre de l'espace interne (4) du boîtier de buse (1), par rapport à la longueur de l'arête d'application (6).
  9. Buse d'application selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les corps d'écoulement (9, 10, 11), vus dans la direction d'écoulement (15) de la colle, sont échelonnés en plusieurs rangées.
  10. Buse d'application selon la revendication 9, caractérisée en ce que les corps d'écoulement (9, 10, 11), vus dans la direction d'écoulement (15) de la colle, sont échelonnés en rangées avec un plus petit nombre de corps d'écoulement (9) de grande section transversale par rapport à un plus grand nombre de corps d'écoulement (10, 11) de petite section transversale.
  11. Buse d'application selon la revendication 10, caractérisée en ce que les corps d'écoulement (9, 10, 11) des rangées individuelles, vus dans la direction d'écoulement (15) de la colle, sont disposés de manière décalée les uns par rapport aux autres.
  12. Buse d'application selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les ouvertures de buse (8) présentent une section transversale de sortie triangulaire.
  13. Buse d'application selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les ouvertures de buse (8, 33) présentent une section transversale de sortie carrée.
  14. Buse d'application selon l'une quelconque des revendications 1 à 13, caractérisée en ce que des ouvertures de buse adjacentes (8, 33) sont connectées par une fente de buse étroite (34) qui présente une hauteur de fente déterminée.
  15. Buse d'application selon la revendication 14, caractérisée en ce que le boîtier de buse (1 ; 3) présente sur l'un de ses côtés qui forme le côté inférieur, une arête d'application (6) et la fente de buse est disposée de ce côté des ouvertures de buse (8, 33).
  16. Buse d'application selon l'une quelconque des revendications 1 à 15, caractérisée en ce que le boîtier de buse (1) est formé d'au moins une partie supérieure (2) et d'une partie inférieure (3).
  17. Buse d'application selon la revendication 16, caractérisée en ce que la partie supérieure (2) et la partie inférieure (3) se situent l'une au-dessus de l'autre le long des ouvertures de buse (8, 33).
  18. Buse d'application selon la revendication 17, caractérisée en ce que les ouvertures de buse (8, 33) sont réalisées en forme de fentes soit dans la partie supérieure (2) soit dans la partie inférieure (3) et l'autre partie respective recouvre les fentes, de sorte qu'il en résulte les ouvertures de buse (8, 33).
  19. Buse d'application selon la revendication 3, caractérisée en ce que le rapport du petit axe (16) au grand axe (14) des sections transversales des corps d'écoulement (9, 10, 11) de section transversale ovale ou elliptique est compris entre 1:1 et 1:20, de préférence entre 1:2 et 1:15, en particulier de préférence entre 1:3 et 1:5.
  20. Buse d'application selon l'une quelconque des revendications 1 à 19, caractérisée en ce qu'au moins une partie de la surface de l'espace interne du boîtier de buse (1) présente une structure rainurée (39).
  21. Buse d'application selon l'une quelconque des revendications 16 à 20, caractérisée en ce que les corps d'écoulement (9, 10, 11) forment des pièces d'espacement entre la partie supérieure (2) et la partie inférieure (3).
  22. Buse d'application selon l'une quelconque des revendications précédentes, en association avec la revendication 14, caractérisée en ce que le tamis (35) est disposé de telle sorte que le granulat soit guidé le long du tamis (35) vers la fente de buse (34).
EP10737500A 2009-07-25 2010-07-13 Buse d'application pour colles visqueuses Not-in-force EP2459320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009034774A DE102009034774A1 (de) 2009-07-25 2009-07-25 Auftragsdüse für viskose Klebstoffe
PCT/EP2010/004253 WO2011012221A1 (fr) 2009-07-25 2010-07-13 Buse d’application pour colles visqueuses

Publications (2)

Publication Number Publication Date
EP2459320A1 EP2459320A1 (fr) 2012-06-06
EP2459320B1 true EP2459320B1 (fr) 2012-11-14

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Application Number Title Priority Date Filing Date
EP10737500A Not-in-force EP2459320B1 (fr) 2009-07-25 2010-07-13 Buse d'application pour colles visqueuses

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US (1) US8430588B2 (fr)
EP (1) EP2459320B1 (fr)
DE (1) DE102009034774A1 (fr)
WO (1) WO2011012221A1 (fr)

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US9272305B2 (en) 2013-07-18 2016-03-01 Lisa Marie Evans System and method for application of a surface compound
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Also Published As

Publication number Publication date
US8430588B2 (en) 2013-04-30
DE102009034774A1 (de) 2011-01-27
EP2459320A1 (fr) 2012-06-06
WO2011012221A1 (fr) 2011-02-03
US20120121315A1 (en) 2012-05-17

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