EP4606490A1

EP4606490A1 - Nozzle for the application of a viscous material on a component surface and device with such a nozzle

Info

Publication number: EP4606490A1
Application number: EP24159441.5A
Authority: EP
Inventors: Janis KAKTINS; Patrick Kuhn
Original assignee: Sika Technology AG
Current assignee: Sika Technology AG
Priority date: 2024-02-23
Filing date: 2024-02-23
Publication date: 2025-08-27
Also published as: WO2025176886A1

Abstract

The invention relates to a nozzle (10) for the application of a viscous material, in particular a viscous adhesive material, to a component surface, having at least one nozzle body (11) which comprises at least one discharge opening (12) for discharging material and at least one first longitudinal side (13) adjacent to the discharge opening (12), the first longitudinal side (13) having an application contour (14) for forming a plurality of material strands, wherein the application contour (14) comprises a plurality of recesses (15) which are formed next to one another along the first longitudinal side (13) in such a way that the application contour (14) is wave-shaped and/or zigzag-shaped.

Description

The invention relates to a nozzle for the application of a viscous material on a component surface and a device with such a nozzle. A nozzle according to the general term of claim 1 is known, for example, from DE 42 03 505 A1 .
For the application of viscous materials to a component surface, it is often necessary to apply the material in several adjacent material beads. This can be particularly important for the application of adhesive on a component surface in order to create a large-area and tight adhesive bond between two components. This type of application is particularly advantageous when bonding two flat components, e.g. gypsum boards or plywood panels.
For example, DE 42 03 505 A1 mentioned above discloses a device with which several parallel adhesive beads can be applied on a component. For this purpose, the device has an application nozzle that includes a discharge opening with a specific application contour. The application contour includes recesses or recesses that can be triangular or trapezoidal in shape. The shape of the recesses determines the cross-sectional shape of the adhesive bead to be applied.
In the application nozzle described in DE 42 03 505 A1 , the recesses are arranged in a particularly large distance from one another. This has the disadvantage that when joining two components, a correspondingly high contact pressure must be applied between the components in order to distribute the material of the applied adhesive beads and thus produce a large-area bonded joint. On the other hand, the adhesive beads must be present with an increased material volume in order to fill the space between the applied beads by pressing the components together. As a result, the adhesive joint is enlarged and can be uneven in size. It may also be necessary to rework the adhesive layer.
The invention is therefore based on the task of providing a nozzle which, on the one hand, reduces the effort required for the application of a viscous material to a component surface and, on the other hand, enables an improved joint between two components. Furthermore, the invention is further based on the task of providing a device with such a nozzle.
According to the invention, the above-mentioned task with regard to the nozzle is solved by the subject-matter of claim 1. With regard to the device, the above-mentioned task is solved by the subject-matter of claim 12.
Specifically, the problem is solved by a nozzle for the application of a viscous material, in particular a viscous adhesive material, to a component surface, having at least one nozzle body which comprises at least one discharge opening for discharging material and at least one first longitudinal side adjacent to the discharge opening, the first longitudinal side comprises an application contour for forming a plurality of material strands. According to the invention, the application contour comprises a plurality of recesses which are formed next to one another along the first longitudinal side in such a way that the application contour is wave-shaped and/or zigzag-shaped.
The invention has the significant advantage that, for the application of a viscous material, a plurality of material strands, in particular material beads, running side by side can be applied to a component surface through the plurality of recesses formed along the first longitudinal side. In other words, the nozzle enables the production of a plurality of material strands of a viscous material running side by side on a component surface. The material strands can be produced in a single work step using the nozzle according to the invention. The nozzle therefore considerably reduces the effort required for the application of the viscous material on a component surface.
The invention has the further advantage that the material volume of the strands can be correspondingly small due to the large number of material strands that can be produced and run next to each other, as the distance between the applied material strands is very small. This means that, for example, when applying an adhesive material to a component surface, the space between the applied adhesive strands can be filled quickly and easily by the adhesive material during the joining process of two components. This results in a large-area adhesive bond between the components. In addition, an adhesive joint of a precise and uniform size can be produced between the components.
The application contour of the first longitudinal side, which delimits the discharge opening for discharging the viscous material, thus makes it possible to produce a large number of material strands running next to each other on one surface due to its wave or zigzag shape. The first longitudinal side can therefore be referred to as the first longitudinal side of the discharge opening of the nozzle body. The recesses of the application contour are formed along the first longitudinal side in such a way that the application contour is zigzag or wave-shaped. The shape of the recesses defines the cross-sectional shape of the strands of material to be applied to a component surface.
The recesses are preferably designed to extend into the nozzle body starting from an opening edge forming the first longitudinal side. In addition, the recesses are designed such that they each form a passage through the wall of the nozzle body, starting from the discharge opening and extending outwards transversely to the first longitudinal side. In other words, the recesses each form a cut-out in a wall section of the nozzle body bounding the discharge opening.
In an application process in which a viscous material is applied to a component surface through the nozzle, the nozzle is first placed on the component surface in such a way that the first longitudinal side of the discharge opening is aligned transversely to the application direction and the discharge opening essentially rests on the surface or is arranged at a small distance from the surface. A viscous material to be applied is then fed to the nozzle body and exits the nozzle body through the discharge opening. This takes place specifically through the recesses of the application contour of the first longitudinal side of the discharge opening. During application, the nozzle is moved in an application direction on the component surface so that a large number of strands of material running next to each other are produced. The number of strands of material corresponds to the number of recesses in the application contour.
Preferably, the nozzle is used for applying adhesive material, in particular high-density adhesive material, to a component surface. The component surface can be part of a panel. For example, the adhesive material can be an assembly adhesive for bonding building material panels, such as gypsum boards or plywood panels. At this point, it should be noted that the nozzle is not limited to the appli-cation of adhesive material. Materials other than viscous material can be applied.
In a preferred embodiment, the recesses each include at least two flanks, with a first flank of one of the recesses merging directly into a second flank of an adjacent further recess to form a zigzag shape and/or a wave shape. This has the advantage that the distance between adjacent recesses is as small as possible. Strands or beads of material can therefore be applied next to each other on a component surface with a small distance between them.
Preferably, the first flank of one recess and the second flank of the other recess merge into one another in a point-like manner. In other words, the intersection of the first flank of one recess and the second flank of the other recess corresponds to an inflection point of the application contour along the first longitudinal side. Alternatively, the first flank of one recess and the second flank of the other recess can merge into one another in an arc. The application contour is preferably free of a rectilinear section between the recesses, which runs parallel to an opening edge of the discharge opening.
The recesses preferably include a recessed base, from which the two flanks extend with opposite gradients towards the first longitudinal side, in particular the opening edge. The flanks define, at least in sections, a cross-sectional shape of a strand of material to be applied.
Preferably, the recesses of the application contour are distributed substantially over the entire length of the first longitudinal side of the discharge opening. In other words, adjacent recesses of the application contour are preferably provided along the entire length of the discharge opening. As a result, the full length of the discharge opening is utilized in order to create as many strands of material as possible. The application contour is preferably comb-like or rake-like.
In a preferred embodiment, the application contour includes a protrusion or elevation between each two adjacent recesses, the shape of the protrusion essentially corresponding to the shape of the recesses. In other words, the protrusion on the first longitudinal side is formed as a protrusion of the nozzle body and the recesses on the first longitudinal side are formed as recesses in the nozzle body, whereby these include the same basic shape. The recesses can therefore be recesses in the nozzle body and the at least one protrusion can be an extension of the nozzle body. With the application contour according to this embodiment, a uniform application pattern of material strands can be produced. By applying strands of material of the same size, an improved joint between two parts is ultimately produced.
In a further preferred embodiment, the recesses and/or the at least one protrusion are triangular or arcuate. Preferably, the protrusion and/or the recess includes a tooth shape. It is advantageous here that strands of material with a triangular or arcuate cross-sectional shape can be applied. Such cross-sectional shapes promote improved distribution of the applied material during a joining process, e.g. when two components to be bonded together are pressed together.
Preferably, the nozzle body has at least one second longitudinal side which is adjacent to the discharge opening and is arranged opposite the first longitudinal side, wherein the second longitudinal side includes a continuous, linear upper edge. The two longitudinal sides of the discharge opening preferably run parallel. Preferably, the second longitudinal side is a continuous, smooth opening edge running along the discharge opening. The second longitudinal side makes it possible to prevent the viscous material from flowing out against the application direction or guide direction of the nozzle during an application process. The second longitudinal side lies flush on the component surface, especially in the case of straight component surfaces, and advantageously forms a kind of barrier for the viscous material. This improves the even and clean application of the viscous material. This reduces or even prevents unwanted material loss, particularly for the application of an adhesive material.
The discharge opening also preferably comprises lateral sides that connect the two longitudinal sides to each other. In total, the discharge opening is bounded all around by the connected longitudinal and lateral sides.
It is advantageous if the application contour of the first longitudinal side and the upper edge of the second longitudinal side include a maximum height that is essentially the same. In other words, the maximum height of the protrusion, in particular protrusions, corresponds to the height of the upper edge of the second longitudinal side. On the one hand, this allows the nozzle to be guided essentially normal to the component surface during the application process. On the other hand, swiveling the nozzle around the upper edge of the second longitudinal side results in a distance between the application contour, in particular the protrusion(s), and the component surface, so that a flat layer of material can be applied under the material strands. In the case of the application of adhesive material, the additional layer can improve the subsequent joining of two components.
In one embodiment, the nozzle body includes at least one feed opening for receiving the viscous material, which is larger than the discharge opening, with the flow cross-section of the nozzle body preferably tapering towards the discharge opening. This ensures that the nozzle is completely filled with the viscous material in the area of the discharge opening, enabling a continuous and uniform application of the material strands.
In a preferred embodiment, the feed opening is essentially round and the discharge opening is elongated, in particular slot-shaped. This has the advantage that a wide track or strip of material strands can be applied to a component surface in a single work step, thus reducing the effort and time required to apply the viscous material. According to this embodiment, the nozzle can also be referred to as a wide nozzle.
In a preferred embodiment, the nozzle body includes at least one reinforcing element, in particular a reinforcing strut or reinforcing rib, which is arranged in an interior of the nozzle body and reinforces a wall of the nozzle body. The reinforcing element has the advantage that the entire nozzle body is stiffened and thus no deformation can occur during use.
The reinforcing element preferably extends transversely to at least one of the longitudinal sides and connects at least two opposite sections of the wall of the nozzle body. The reinforcing element is preferably arranged directly in front of the discharge opening so that the discharge opening is dimensionally stable even under increased load. The reinforcing element prevents undesirable deformation of the nozzle body.
In a preferred embodiment, the nozzle body includes a plurality of the reinforcing elements which are spaced apart from each other in a direction parallel to the longitudinal side of the discharge opening and form material guide channels towards the discharge opening. The reinforcing elements can form partitions which are arranged in the nozzle body in front of the discharge opening and extend in the longitudinal direction of the nozzle. The material guide channels allow the volume of a viscous material guided in the nozzle body to be divided towards the discharge opening. This has the advantage that the material to be applied is evenly distributed over the entire length of the discharge opening and thus a uniformly thick application can be achieved. In the case of the application of adhesive material, this has the advantage that it results in a reinforced adhesive bond between two components and a precisely adjusted adhesive joint size.
According to a secondary aspect, the invention relates to a device comprising at least one nozzle of the type described above and at least one container containing a viscous material, in particular a viscous adhesive material, wherein the nozzle is connected to the container for transferring the viscous material. The container may be, for example, a cartridge or a tank. Other containers are possible. Reference is made here to the advantages explained in connection with the nozzle. Furthermore, the device may alternatively or additionally include individual features, or a combination of several features previously mentioned in relation to the nozzle.
The invention is explained in more detail below with reference to the accompanying figures. The embodiment shown is an example of how the nozzle according to the invention can be designed.

Fig. 1a: a side view of a nozzle for the application of a viscous material according to a preferred embodiment according to the invention;
Fig. 2a: a longitudinal section along the cut line A-A through the nozzle according to fig. 1;
Fig. 3a: a top view of the nozzle according to fig. 1; and
Fig. 4a: a perspective bottom view of the nozzle according to fig. 1.

Figs. 1 to 4 show a nozzle 10 according to a preferred embodiment according to the invention. The nozzle 10 is used for the application of a viscous and curable material as material strands or material beads onto a component surface. The material used is preferably an adhesive material, e.g. a one-component system or two-component system. For example, the nozzle 10 can be used to apply assembly adhesive.
In the following, the nozzle 10 is described for use with an adhesive material to bond at least two components, e.g. panels or the like, together. However, this is not limited to such an application, but can be used for also applying other viscous materials onto surfaces.
The nozzle 10 has a nozzle body 11 with a discharge opening 12 for discharging a viscous adhesive material. Furthermore, the nozzle body 11 has a feed opening 21 for feeding a viscous adhesive material to an interior 23 of the nozzle body 11. The feed opening 21 and the discharge opening are connected by the interior 23. The nozzle body 11 comprises a total of two longitudinal ends 26a, 26b, which are formed opposite each other. The discharge opening 12 is arranged at the first longitudinal end 26a. The feed opening 21 is arranged at the second longitudinal end 26b. The nozzle body 11 comprises a longitudinal axis L, which runs between the two longitudinal ends 26a, 26b.
As can be clearly seen in figs. 1 and 2, the feed opening 21 is larger than the discharge opening 12. Specifically, the feed opening 21 includes a flow cross-section that is larger than a flow cross-section of the discharge opening 12. Furthermore, it can be seen in Figs. 1 and 2 that the flow cross-section tapers from the feed opening 21 to the discharge opening 12.
The feed opening 21 is round, in particular circular. The discharge opening 12 is slot-shaped. Specifically, the discharge opening 12 is formed by an elongated slot. The flow cross-section of the nozzle body 11 thus changes from a round shape starting from the feed opening 21 towards the discharge opening 12 to an elongated slot.
At the second longitudinal end 26b, the nozzle body 11 includes a connection 27 in order to be connected to an application device, in particular a container with the viscous adhesive material. The connection 27 has a flange-like design. Specifically, the connection 27 comprises a collar that is formed radially outwards and extends in the circumferential direction with respect to the longitudinal axis L. In other words, the collar is formed circumferentially on the outside of the feed opening 21 on the nozzle body 11.
The nozzle body 11 further includes a wedge-shaped portion 28 extending from the connection 27 to the first longitudinal end 26a of the nozzle body 11. The wedge-shaped portion 28 forms a nozzle tip 29 at the first longitudinal end 26a of the nozzle body 11, which comprises the discharge opening 12 (see figs. 1 and 2). The nozzle body 11 is formed in one piece. In other words, the nozzle body 11 has a monolithic or one-piece design. Alternatively, the nozzle body 11 can be formed in several parts.
As partially recognizable in figs. 1 to 4, the nozzle body 11 has a first longitudinal side 13 with an application contour 14 for forming several strands or beads of the viscous adhesive material running next to each other, in particular essentially parallel. The first longitudinal side 13 is adjacent to the discharge opening 12 and extends along the discharge opening 12. The first longitudinal side 13 of the nozzle body 11 corresponds to a first longitudinal side 13 of the discharge opening 12.
Furthermore, the nozzle body 11 includes a second longitudinal side 18 which is adjacent to the discharge opening 12 and is arranged opposite the first longitudinal side 13. The second longitudinal side 18 extends along the discharge opening 12 and therefore corresponds to a second longitudinal side 18 of the discharge opening 12.
The two longitudinal sides 13, 18 of the discharge opening 12 are structurally connected at their ends by a wall of the nozzle body. In other words, a lateral side 31 is adjacent to the discharge opening 12 at each end of the longitudinal sides 13, 18. The two longitudinal sides 13, 18 and the two lateral sides 31 are part of the nozzle tip 29. The shape of the second longitudinal side 18 and the lateral sides 31 will be discussed in more detail later.
As shown in figs. 2 and 3, the application contour 14 of the discharge opening 12 includes a plurality of recesses 15, which are formed side by side along the first longitudinal side 13. Fig. 2 clearly shows that the application contour 14 is zigzag-shaped. The application contour 14 forms a zigzag-shaped edge of the nozzle body 11. Alternatively or additionally, the application contour 14 can be wave-shaped. Other shapes of the application contour 14 are possible.
Furthermore, it can be seen from fig. 2 that the recesses 15 are arranged in a row over the entire length of the first longitudinal side 13 of the discharge opening 12. In other words, the zigzag-shaped application contour 14 is formed over the entire length of the first longitudinal side 13 of the discharge opening 12. A protrusion 17 is formed between each two recesses 15. The application contour 14 thus additionally includes a plurality of protrusions 17. One of the protrusions 17 thus separates two of the recesses 15 in each case. One of the recesses 15 is formed in each case in the edge regions or at the ends of the first longitudinal side 13, these being bounded on the one hand by a protrusion 17, in particular when viewed towards the center of the application contour 14, and on the other hand by the lateral sides 31.
Fig. 2 further shows that the recesses 15 are formed lying at the same height. More specifically, the recesses 15 each comprise a recessed base 32, the recessed bases 32 lying at a common height H, in particular line. The protrusions 17, on the other hand, each include a tip 33, the tips 33 lying at a common height H, in particular line.
According to fig. 2, the protrusions 17 have a shape that corresponds to a shape of the recesses 15. It is possible that the protrusions 17 and the recesses 15 include different shapes. To form material beads with a triangular cross-section, it is necessary for at least the recesses 15 to be triangular. In the present embodiment example, the protrusions 17 are also triangular. Specifically, the protrusions 17 are formed as triangular teeth. The recesses 15 are formed as triangular recesses. Alternatively, the recesses 15 or the protrusions 17 may include other shapes. For example, the recesses 15 or the protrusions 17 can be curved.
However, it is essential that the recesses 15 each include two flanks 16a, 16b, with a first flank 16a of the recesses 15 merging directly into a second flank 16b of an adjacent further recess 15 to form the zigzag shape. In other words, the protrusion 17 between two adjacent recesses 15 is free of a rectilinear section extending transversely to the longitudinal axis L. The two flanks 16a, 16b of the two adjacent recesses 15 meet at the tip 33 of the protrusion 17 and intersect each other in the transition. In the case of a wave-shaped application contour 14, the tip 33 is curved, whereby even here there is no rectilinear section.
Figs. 2 and 3 clearly show that the recesses 15 are formed in the longitudinal direction of the nozzle body 11 towards the second longitudinal end 26b of the nozzle body 11. In addition, the recesses 15 are formed in such a way that they each form a passage through the wall of the nozzle body 11 starting from the discharge opening 12 transversely to the first longitudinal side 13 towards the outside. In other words, the recesses 15 each form a cut-out in a wall section of the nozzle body 11 delimiting the discharge opening 12. The triangular shape of the recesses 15 is essential for arranging triangular adhesive beads on a component surface.
As described above, the nozzle body 11 includes a second longitudinal side 18 which is adjacent to the discharge opening 12 opposite the first longitudinal side 13. The second longitudinal side 18 includes a continuous, linear upper edge 19 which extends completely along the discharge opening 12. The upper edge 19 is smooth, i.e. free of an application contour. Like the second longitudinal side 18, the lateral sides 31 are smooth at their upper edge.
In particular, fig. 1 shows that the application contour 14 of the first longitudinal side 13 and the upper edge 19 of the second longitudinal side 18 include a maximum height which is the same. In other words, at the discharge opening 12, the tips 33 of the protrusions 17 and the upper edge 19 of the second longitudinal side 18 are at the same height H or in the same plane.
Figs. 2 and 4 show that the nozzle body 11 has a total of three reinforcing elements 22, which are arranged in an interior 23 of the nozzle body 11 and stiffen a wall 24 of the nozzle body 11. Specifically, the reinforcing elements 22 are in the wedge-shaped portion 28 and stiffen it. In general, the nozzle body 11 is predominantly thin-walled. At least the wedge-shaped portion 28 includes a wall 24 that is selected to be correspondingly thin.
The reinforcing elements 22 are strut-like or rib-like. Fig. 4 shows that both reinforcing elements 22 are ribs 34. The ribs 34 extend transversely to the longitudinal sides 13, 18 and connect two opposite sections of the wall 24 of the nozzle body 11. Specifically, the ribs 34 connect the two wall sections of the nozzle body 11 that determine the wedge-shaped portion 28. The ribs 34 are arranged upright in the interior 23 of the nozzle body 11. In other words, the ribs 34 are parallel to the longitudinal axis L. The ribs 34 are arranged in the vicinity of the discharge opening 12. The ribs 34 are spaced apart from each other transversely to the longitudinal axis L and in a direction parallel to the longitudinal side 13, 18. The ribs 34 form material guide channels 25 towards the discharge opening 12. There are a total of three material guide channels 25.
According to fig. 2, one material guide channel 25 is formed between each two adjacent ribs 34. Two guide channels 25 are formed at the edge, whereby the guide channels 25 are each bounded on the one hand by the wall 24 and on the other hand by one of the ribs 34. As shown in fig. 2, the ribs 34 are arranged in a half of the wedge-shaped portion 28 close to the first longitudinal end 26a in order to reinforce the nozzle body 11 in the area of the discharge opening 12. In addition, the material guide channels 25 provide uniform distribution of the material volume in the interior 23 of the nozzle body 11. Fig. 2 also shows that the ribs 34 end (shortly) before the discharge opening 12. There is thus a small distance between the ribs 34 and the application contour 14.
In fig. 4 it can be seen that the ribs 34 taper towards the discharge opening 12 depending on the wedge-shaped portion 28. Figs. 2 and 4 further show that the wedge-shaped portion 28 includes two parallel sides 35. In other words, the wedge-shaped portion 28 includes a wedge shape on the one hand and two sides 35 extending perpendicularly, in particular to the connection 27, on the other hand.
In general, it should be noted that the nozzle 10 can be combined with a device (not shown) comprising a container, for example a cartridge or a tank, containing a viscous adhesive material. The nozzle 10 is preferably fluid-connected to the container.

List of reference symbols

10: Nozzle
11: Nozzle body
12: Discharge opening
13: first long side
14: Application contour
15: Recesses
16a, 16b: Flanks
17: Protrusions
18: Second longitudinal side
19: Linear upper edge
21: Feed opening
22: Reinforcing element
23: Interior of the nozzle body
24: Wall of the nozzle body
25: Material guide channels
26a, 26b: Longitudinal ends
27: Connection
28: wedge-shaped portion
29: Nozzle tip
31: Lateral sides
32: Recessed bases
33: Tips
34: Ribs
35: Sides of the wedge-shaped section

L: Longitudinal axis
H: common height

Claims

Nozzle (10) for the application of a viscous material, in particular a viscous adhesive material, to a component surface, having at least one nozzle body (11) which comprises at least one discharge opening (12) for discharging material and at least one first longitudinal side (13) adjacent to the discharge opening (12), the first longitudinal side (13) having an application contour (14) for forming a plurality of material strands
characterized in that
the application contour (14) comprises a plurality of recesses (15) which are formed next to one another along the first longitudinal side (13) in such a way that the application contour (14) is wave-shaped and/or zigzag-shaped.
Nozzle (10) according to claim 1,
characterized in that
the recesses (15) each have at least two flanks (16a, 16b), a first flank (16a) of one of the recesses (15) merging directly into a second flank (16b) of an adjacent further recess (15) to form a zigzag shape and/or a wave shape.
Nozzle (10) according to claim 1 or 2,
characterized in that
the recesses (15) of the application contour (14) are distributed substantially over the entire length of the first longitudinal side (13) of the discharge opening (12).
Nozzle (10) according to one of the preceding claims,
characterized in that
the application contour (14) comprises a protrusion (17) between two adjacent recesses (15) in each case, the shape of the protrusion (17) essentially corresponding to the shape of the recesses (15).
Nozzle (10) according to one of the preceding claims, in particular to claim 4,
characterized in that
the recesses (15) and/or the at least one protrusion (17) are triangular or arcuate.
Nozzle (10) according to one of the preceding claims,
characterized in that
the nozzle body (11) comprises at least one second longitudinal side (18) which is adjacent to the discharge opening (12) and is arranged opposite the first longitudinal side (13), wherein the second longitudinal side (18) includes a continuous, straight upper edge (19).
Nozzle (10) according to claim 6,
characterized in that
the application contour (14) of the first longitudinal side (13) and the upper edge (19) of the second longitudinal side (18) have a maximum height which is substantially the same.
Nozzle (10) according to one of the preceding claims,
characterized in that
the nozzle body (11) includes at least one feed opening (21) for feeding the viscous material, which is larger than the discharge opening (12), wherein preferably the flow cross-section of the nozzle body (11) tapers towards the discharge opening (12).
Nozzle (10) according to one of the preceding claims,
characterized in that
the feed opening (21) is essentially round and the discharge opening (12) is elongated, in particular slot-shaped.
Nozzle (10) according to one of the preceding claims,
characterized in that
the nozzle body (11) includes at least one reinforcing element (22), in particular a reinforcing strut or rib, which is arranged in an interior (23) of the nozzle body (11) and stiffening a wall (24) of the nozzle body (11).
Nozzle (10) according to claim 10,
characterized in that
the reinforcing element (22) extends transversely to at least one of the longitudinal sides (13, 18) and connects at least two opposite sections of the wall (24) of the nozzle body (11).
Nozzle (10) according to claim 10 or 11,
characterized in that
the nozzle body (11) includes a plurality of the reinforcing elements (22), which are spaced apart from one another in a direction parallel to the longitudinal side (13, 18) of the discharge opening (12) and form material guide channels (25) towards the discharge opening (12).
Device with at least one nozzle (10) according to one of claims 1 to 12 and at least one container which includes a viscous material, in particular a viscous adhesive material, wherein the nozzle (10) is connected to the container for transferring the viscous material.