Spout for film bag

Abstract

The invention relates to a spout for film bags, which comprises a pouring channel 1, the channel walls 1a, 1c of which are formed in a first end region 2a as pouring connection pipes and which are surrounded in a second end region 2b by a welding area 3, which has two welding arms 3a, 3b which extend in opposite directions perpendicular to a channel axis 1b of the pouring channel 1 to respective welding arm ends 4a, 4b, in particular away from the channel wall 1c in the second end region 2b, and each of the welding arms 3a, 3b has a number of rib elements 5a, 5b, 5c which are connected to the channel wall 1c and which are spaced apart from one another in the direction of the channel axis 1b, and each of the welding arms 3a, 3b has a plurality of rib elements 5a, 5b, 5c which are connected to the channel wall 1c and which are spaced apart from one another in the direction of the channel axis 1b, 5a, 5b, 5c have, at a first welding side 6a, a first edge region 7a extending between the passage wall 1c and the welding arm portion ends 4a, 4b, and at a second welding side 6b, a second edge region 7b extending between the passage wall 1c and the welding arm portion ends 4a, 4b, the first and second edge regions 7a, 7b forming first and second welding zones 7a, 7b, which weld zones 7a, 7b are connected to the welding arm portion ends 4a, 4b. 4a, 4b, whereby in each of the welding arm parts 3a, 3b, respectively, only one free space 8a, 8b is formed between the two spaced apart rib elements 5a, 5b / 5b, 5c, and each of the free spaces 8a, 8b is open on one of the two welding sides 6a, 6b and is closed by a welding surface 9 on the other of the two welding sides 6a, 6b.

Description

Technical Field

[0001] The present invention relates to a pouring outlet for a film bag, the pouring outlet having a pouring passage, wherein a passage wall of the pouring passage is formed as a pouring connection pipe in a first end region, and the passage wall is surrounded by a welding region in a second end region, the welding region having two welding arm portions which extend in opposite directions perpendicular to the passage axis of the pouring passage, respectively, towards the ends of the welding arm portions, in particular away from the passage wall within the second end region, and each of the welding arm portions having a plurality of rib elements which are joined to the passage wall of the second end region and are spaced apart from each other in the direction of the passage axis, and each of the rib elements having a first edge region extending between the passage wall and the end of the welding arm portion on a first welding side, and having a second edge region extending between the passage wall and the end of the welding arm portion on a second welding side, the first and second edge regions forming first and second welding zones. In this case, these welding zones converge in the direction towards the ends of the welding arm portions.

Background Art

[0002] In a possible embodiment, it is possible for the edge region / welding zone to extend at least partially linearly. In such a case, the linearly extending regions of the first edge region and the second edge region form an acute angle with each other.

[0003] Such spouts are known in the prior art, for example from Patent Document 1 of the same applicant of this application. The spout is intended to be welded and fixed between two film layers of a film bag, which contains, for example, food products, particularly liquid food products. The welding area has a single form due to the converging shape of the edge regions that form the welding zone within both welding arms, which tapers in the direction from the passage axis toward the end of the welding arm, and in particular this form is often also referred to as shuttle-shaped (schiffchenfoermig), in which case this taper occurs in a plane perpendicular to the passage axis.

[0004] Using welding jaws that direct welding energy from two opposing welding sides through each film layer of the film bag to the welding zone, welding between the welding zone and each film layer is performed on each welding side of both welding sides.

[0005] This welding may be carried out, for example, thermally or inductively, or using ultrasound, or by other suitable welding methods.

[0006] The welding sides are, consequently, the two sides of the welding area that are opposite each other. These welding sides are located on either side of a plane, which includes the passage axis and the ends of both welding arms. In this case, the aisle axis is the longitudinal extension axis of the dispensing aisle, and this dispensing aisle passes through the dispensing outlet.

[0007] This plane is also referred to as the front, and it corresponds to the plane of a film bag, particularly an unfilled film bag, that is parallel to the film layer. In this regard, the observer focuses their attention on the front of the film bag when observing it from the front.

[0008] In the state of use with an upright film bag, in the function of the end region as a dispensing connection pipe, in one end region that forms the upper end region, Typically, a removable closing member, such as a cap, is provided, which is advantageously fixed to the dispensing connection pipe by a screw connection, or can be fixed and is removable.

[0009] The second end region forming the weld area is the lower end region of the spout in the usage described. Between the spout connection pipe and the weld area, as in the prior art and similarly in the present invention, a radially projecting collar can be positioned around the passage wall. This colored portion is used as a contact point for the cap and / or has a functional structural element of so-called originality, which can indicate whether the cap has already been opened once, or at least whether it has been moved from its original closed position.

[0010] The rib elements are advantageously formed as flat elements. In particular, under this premise, an element having two faces separated by a certain thickness is understood, where this thickness is, to its own advantage, smaller than the cross-sectional dimensions of both faces that are opposite each other in the thickness direction. The thickness of such surface elements can be the same everywhere, and this is not essential for the present invention. This thickness can also vary locally.

[0011] The rib elements form the welding zones described at the beginning at the edge regions of these rib elements, and these welding zones extend parallel to the upper edge of the film bag. Therefore, after welding, the film bag is ensured to have multiple linear fixing and sealing sections along the welded area at the upper edge of the film bag.

[0012] Throughout the welding process, the rib elements are subjected to forces acting parallel to the rib plane. To prevent the rib elements from receding due to bulging under the action of these forces, in conventional known art, these rib elements are typically intended to be stabilized by a wall connecting all of them, in which case the wall is positioned around the plane or front. As a result of the above, the wall extends centrally and perpendicularly to the rib elements, thereby providing two free spaces between each adjacent pair of rib elements, and these free spaces are formed on both sides of the separating wall.

[0013] Such spouts are widely available on the market, can be easily manufactured using advantageous injection molding methods, are easily welded, and require little material. However, they have the drawback that the linear weld zone can malfunction under excessive stress and therefore may result in a non-sealed state. Indeed, solutions are also publicly known, and these solutions provide an extremely large weld surface, especially over the entire height of the weld area (viewed in the direction of the passage axis); however, these solutions clearly require a lot of material. [Prior art documents] [Patent Documents]

[0014] [Patent Document 1] German Patent Application Publication No. 10 2017 009 693A1 Specification [Overview of the Initiative] [Problems that the invention aims to solve]

[0015] Given this background, the object of the present invention is to provide a spout of the type described at the beginning. This pouring outlet can be more easily manufactured in an injection molding method, can be particularly easily demolded, and this pouring outlet provides an increase in the surface available for welding in the welding area in a material cost that does not increase or only ambiguously increases, particularly in the simultaneous sufficient stability of the provided welding surface against the forces acting in the welding process.

Means for Solving the Problem

[0016] According to the present invention, this problem is In each of the welding arm parts, there is formed a unique free space between two spaced rib elements respectively, and Each of the free spaces is open on one of the two welding sides, particularly open outward, And on the other welding side of the two welding sides, it is closed by a welding surface, and thus the problem is solved.

Effect of the Invention

[0017] Particularly when each of these welding arm parts has at least three rib elements arranged adjacent to each other with an interval, in the direction of the passage extension, such an embodiment has at least two free spaces adjacent to each other, particularly adjacent and overlapping, in each welding arm part. An advantageous embodiment is Each welding arm part has exactly three rib elements and thus exactly two free spaces are provided in each welding arm part, It is possible to intend this.

[0018] Unlike the prior art described above, the central stabilizing wall is omitted for the rib elements described above. Instead, stabilization of two adjacent rib elements is achieved by joining the weld zones of these rib elements, i.e., the edge regions of these rib elements, which are located at least fundamentally overlapping in the direction of passage extension, by a weld surface. Such weld surfaces consequently extend between the weld zones of both rib elements surrounding the free space and, in addition to their stabilizing function, increase the overall area used for welding. This provides welding with increased load-bearing capacity compared to conventional linear joints, while simultaneously guaranteeing the stability of the rib element.

[0019] A key advantage of the present invention is that, compared to the prior art, an increase in the total weld surface area is provided without the need for a larger, or at least not significantly larger, amount of synthetic material to be used in the injection molding process for this purpose.

[0020] Embodiments according to the present invention are structurally, As described at the beginning, initially, the existing wall portion is moved from the center between the conventional welding zones, partially toward the first welding side and partially toward the second welding side, and the moved wall region then forms one welding surface in each direction. This can be interpreted as follows.

[0021] In a favorable embodiment, each of the welding arm portions is It has at least one free space, in particular a unique free space, which is open on the first welding side and closed on the second welding side, Having at least one free space, in particular a unique free space, which is closed on the first welding side and open on the second welding side, That is intended.

[0022] Advantageously, this provides one embodiment in which the weld area is formed on the first weld side but not identically with respect to the second weld side, which embodies a significant difference from the prior art. On the first side, at least one, preferably exactly one, weld surface closing the free space is, advantageously, in this advantageous embodiment, positioned offset in height (viewed in the direction of passage extension) with respect to at least one, advantageously exactly one, weld surface on the other weld side. Similarly, such displacement is also provided at at least one opening in the free space on the welding side, as described above, and in particular, the free space is open outward across this welding side. Such an opening is later covered in use by a film layer fixed around the opening in the welding area.

[0023] This embodiment also ensures good demolding in injection molding, because the molding protrusions that define the free space in the injection molding tool can move in a direction perpendicular to the aforementioned front surface when the injection molding mold is opened and closed.

[0024] The present invention is Both welding arms are formed identically or in the same way on one and the same welding side, in the geometric shape of each of these welding arms, particularly in the relative arrangement of open and closed free spaces, and particularly differing only on different welding sides. It is possible to intend to do so.

[0025] Regardless of the number of rib elements and the free space formed between these rib elements, the present invention is advantageous in that it The free spaces located adjacent to each other, particularly overlapping, in the direction of the aforementioned passage axis are alternately closed or open to the first weld side and the second weld side. It is possible to intend to do so.

[0026] Advantageously, this allows us to view, in a cross-section passing through the welding arm in a direction perpendicular to the direction of separation of the ends of the welding arm, It is given that the rib element and the welded surface that closes a free space have a meandering shape. The cross-section perpendicular to the direction of separation of the ends of the welding arm is, in this case, advantageously positioned at a distance from the passage axis, and in particular, this cross-section is therefore located outside the pouring passage. This provides an overall extremely stable structure with an increased weld surface.

[0027] On one welding side, or selectively on the other welding side, the welding surface that closes the free space between the rib elements is positioned such that the surface facing outward from the welding surface, i.e., the surface in contact with the film layer to be welded, is flush with the edge region of the rib elements that forms the welding zone. This ensures that the weld and the welding zones of the adjacent edge regions on both sides of this weld surface are integrated into a joint surface that is used for welding.

[0028] To have an advantage, The welded surface that closes the free space has a wall thickness equal to or less than the wall thickness of the adjacent rib element, and in particular, at least less than the wall thickness of the rib element at the thickest point of the rib element. It is possible that this is intended. Similarly, this contributes to material reduction without hindering weldability.

[0029] Advantageously, the free space consequently extends, for example, from an opening on one of these weld sides, which is bounded above and below by the edge region of the rib element, into the weld arm in a direction perpendicular to the front, to the inner surface of the weld face of the opposing weld side. At the end of each welding arm, the opening can be bordered by a thickened portion extending in the direction of the passage axis, and this thickened portion is located on the inside, on opposing welding surfaces.

[0030] Advantageously, within each welding arm portion on one welding side, the welding zone of the rib element, at least one welding surface that closes the free space, and especially similarly the aforementioned thickened portion are located in the same plane of a single welding plane, and welding is performed within this welding plane. This plane can be parallel to the passage axis, or similarly, not parallel. In possible, non-parallel embodiments, the welding plane can move away from the passage axis downwards, or approach the passage axis.

[0031] The present invention allows the surface region that contacts the film layer during welding to have different surface embodiments, particularly depending on the welding method used. These contacting surfaces are, advantageously, at least the edge region or welding zone, the welding surface that closes the free space, and the surface of the sheath region, the sheath region surrounding the passage axis and connecting the surface region of the welding arm.

[0032] Advantageously, in introducing conductive welding energy, these contacting surfaces can be formed, for example, smoothly, especially without three-dimensional molding.

[0033] These contacting surfaces may also be roughly formed, in other embodiments, particularly by three-dimensional forming, which is advantageous in ultrasonic welding, for example, by three-dimensional forming such as protrusions, thereby providing an initial point for melting.

[0034] It is possible for the three-dimensional molding to be raised and positioned on the contacting surface, for example, within a predetermined dimensional range, particularly within 0.02 to 0.05 mm.

[0035] Particularly advantageous is that the free space expands in the direction from the welded side where the free space is closed by the weld surface to the welded side where the free space is open, especially in the height direction, i.e., in the direction of the separation between the rib elements. It is possible that this is intended. The expansion of free space in the direction of separation of the ends of the weld arm portions is advantageously already present because the weld arm portions taper toward the ends of the weld arm portions. This achieves particularly easy demolding between the manufactured pouring spout and the molding protrusions that define the free space in the injection molding mold.

[0036] A favorable embodiment is Each of the rib elements of the aforementioned rib element is in the lateral plane surrounding (around) It is positioned such that this lateral plane is perpendicular to the axis of the passage. It is possible to intend to do so. The lateral plane and the front view mentioned at the beginning are advantageously perpendicular to each other. Consequently, the lateral planes of different rib elements are spaced apart from each other.

[0037] Advantageously, in this embodiment, The surface of the rib element that is directed toward the aforementioned free space is its lateral plane. surrounding (around) The rib elements are arranged in an inclined plane with respect to the lateral plane, That is intended. This allows for the expansion of the free space in the direction of opening up the free space, as mentioned above, and also facilitates demolding.

[0038] A more advantageous embodiment is, In the rib element located closest to the second end of the aforementioned dispensing passage, A collar is formed that is oriented away from this rib element, increasing the welding zone / edge region of this rib element. It is possible to intend to do so. Since the lowest rib element has no further adjacent rib elements below it, the welding zone of this rib element is limited to the thickness of the edge region of this rib element.

[0039] The attached collar extends downward flush with the weld zone. Advantageously, the weld zone of the rib element is increased by at least, essentially, the height of the collar, and in particular, the rib element is made thicker downward at its edges. This induces an improved load-bearing capacity for the welded joint between the welded area and the film layer, precisely at the location where the greatest movement between the film layer and the welded area occurs during use.

[0040] The colored portion can form an elastically flexible region, which can prevent the film from stretching within that region during welding.

[0041] It is particularly advantageous if the collar portion has a chamfered edge on its lower, outward-facing edge, or if it is rounded to a certain radius. Similarly, it is possible to ensure that this beveled edge does not put stress on the film.

[0042] To have an advantage, similarly, In the direction toward the end of the welding arm portion, The thickness of at least one rib element, preferably all rib elements, as viewed in the direction of the passage axis, is increasing, particularly on one side or both sides of the transverse plane, and / or The height of the free space, viewed in the direction of the aforementioned passage axis, decreases between the two rib elements. It is also possible that this is the intended outcome.

[0043] This achieves an increase in the effectively functioning welding surface in the direction toward the end of the welding arm. Furthermore, when viewing the projection of the weld surface in a direction perpendicular to the front within the region of the end of the welding arm, both welding sides are offset, resulting in an increased overlap between the opposing weld surfaces. This consequently results in improved load-bearing capacity of the weld at the end of the welding arm.

[0044] Advantageously, within both of the welding arms, the free space that is identically positioned with respect to the position of the welding arms relative to the passage axis, as viewed in the direction of the passage axis, is either closed or open toward the same welding side.

[0045] In that case, even more advantageously, two free spaces that are arranged in the same way, It is possible that the two welded arm portions are joined by grooves across the sheath surface region of the second end region, extending between both of the aforementioned welded arm portions. Advantageously, the height of this groove, measured in the direction of the passage axis, corresponds to the height of the free space in the same direction.

[0046] However, the present invention is similar in that, This outer surface region is formed without grooves, and in particular, this outer surface region has a curved surface transition at the height of two free spaces within different arms, and this surface transition corresponds to the surface transition between the welding surfaces that close the free space in both welding arm portions on the same welding side. It was also possible to intend that.

[0047] A more structurally advantageous embodiment is: Within the aforementioned welding area, The aforementioned dispensing passage has two flat passage walls that are parallel to each other and located opposite each other with respect to the axis of the passage. The rib elements of both welded arm portions are joined to these passage walls. That is the intention. This flat, level shape is present at least on the side of the passageway wall, and the rib element is adjacent to this passageway wall. The flat, level surface of the passageway wall is consequently oriented into free space. During injection molding, demolding is preferably performed in a direction parallel to this surface. The passage walls are preferably formed in exactly the same way there, but it is also possible that these passage walls are similarly not flat when radially inward toward the passage axis.

[0048] The pouring passage is advantageous in that it has a plurality of reinforcing ribs between two parallel and opposing passage wall regions within the welding area. These reinforcing ribs can extend radially inward from the inner surface of the passageway wall. The inner surface of the passageway wall between parallel, flat passageway wall regions can be curved and extended, particularly with a radius invariant with respect to the passageway axis.

[0049] Further embodiments, which can be combined with all the embodiments described above, are described below.

[0050] For example, the welding surface that closes off free space, With respect to at least one edge region of the rib element adjacent to the weld surface, and more preferably with respect to both edge regions adjacent to the weld surface, It is positioned to protrude outwards. It is possible that this is intended.

[0051] Advantageously, such a protruding weld surface, At least geographically, and more particularly, within the region extending from the sheath surface region of the second end region to the end of the welding arm portion, It is formed flat, or The aforementioned edge regions have a curvature that extends in the direction of separation, and in particular, they have an outward, arch-shaped curvature. Advantageously, such curvature exists within a single plane, which is aligned perpendicular to the direction of extension of the linearly extending edge region of the rib element.

[0052] Such protruding weld surfaces can, for example, form a weld material storage area, which is pressurized during welding, particularly extending to the edge region.

[0053] One embodiment is, The weld surface that closes the free space is positioned flush with at least one edge region of the rib element adjacent to this weld surface, preferably with respect to both of the edge regions adjacent to this weld surface. It is possible to intend to do so.

[0054] In weld surfaces that are flush with the surface and protrude across the edge region, The welding surface and / or the edge region At least within the region extending from the outer surface region of the second end region to the end of the welding arm, It is formed flat, or It has a curvature that extends in a plane perpendicular to the axis of the passage. In particular, it is formed in a concave or convex shape outward. It is possible that this is intended.

[0055] Advantageous embodiments will be described in detail with reference to the figures.

[0056] Figures 1 to 4 illustrate an advantageous first embodiment, which shares features with all other embodiments shown in the figures, except for differences described later, and these features will not be explained again in the later figures. [Brief explanation of the drawing]

[0057] [Figure 1]This figure shows the features according to the present invention from different perspectives. [Figure 2] This figure shows the features according to the present invention from different perspectives. [Figure 3] This figure shows the features according to the present invention from different perspectives. [Figure 4] This figure shows the features according to the present invention from different perspectives. [Figure 5] This figure shows the features according to the present invention from different perspectives. [Figure 6] This figure shows the features according to the present invention from different perspectives. [Figure 7] This figure shows the features according to the present invention from different perspectives. [Figure 8] This figure shows the features according to the present invention from different perspectives. [Figure 9] This figure shows the features according to the present invention from different perspectives. [Figure 10] This figure shows the features according to the present invention from different perspectives. [Figure 11] This figure shows the features according to the present invention from different perspectives. [Figure 12] This figure shows the features according to the present invention from different perspectives. [Figure 13] This figure shows the features according to the present invention from different perspectives. [Figure 14] This figure shows the features according to the present invention from different perspectives. [Figure 15] This figure shows the features according to the present invention from different perspectives. [Modes for carrying out the invention]

[0058] The common characteristics are as follows:

[0059] The illustrated spout has a spout passage 1, which has a longitudinal extension direction following the passage axis 1b, and the passage wall 1a of the spout passage is formed at least basically with a cylindrical cross-section in the upper end region 2a, and also forms a spout connection pipe.

[0060] Within the upper end region 2a, the passage wall 1a externally carries an external thread, which cooperates with a secondary cap for the present invention, which is not shown herein and has a corresponding internal thread, so that the outlet connection pipe can be selectively closed or opened. The dispensing connection pipe is an area from which the contents of a film bag not shown herein can be removed, and from that area.

[0061] Within the lower end region 2b, the passage wall 1a is surrounded by a welding region 3, which comprises two welding arm portions 3a. Within this region, the surrounded passage wall does not need to correspond to a cylindrical shape that is recognizable within the upper region.

[0062] The welding area 3 comprises two welding arm portions 3a and 3b, which are positioned facing each other diametrically around the passage wall / passage axis and extend away from the passage axis 1b / passage wall 1a. The film layers of the film bag are welded to the two opposing sides 6a and 6b of the welding arm portions 3a and 3b, respectively, and thus the welding area is surrounded between these film layers. The welding sides 6a and 6b are located on either side of a virtual front, which itself comprises the passage axis 1b and both welding arm ends 4a and 4b. This front side is consequently located in the center of the dispensing spout and parallel to the film layer that is not shown on the film bag.

[0063] In particular, the cross-sectional views in Figures 3 and 4 clearly show that each welded arm portion 3a, 3b comprises, in itself, multiple, here three, rib elements 5a, 5b, and 5c. Possible embodiments are not limited to the three rib elements shown. In particular, it is possible to have more rib elements than three, which would simply be an analogous extension of this embodiment downwards. The rib elements are advantageously formed as planar elements, each extending around transverse planes 10a, 10b, and 10c, which are perpendicular to the passage axis 1b. The rib elements 5a, 5b, and 5c, or the transverse planes 10a, 10b, and 10c of these rib elements, are spaced apart in the direction of the passage axis 1b.

[0064] In the height direction corresponding to the direction of the passage axis 1b, spaced apart, two rib elements 5a and 5b, or 5b and 5c, surround the free spaces 8a and 8b. These free spaces 8a and 8b each occupy the space between the opposing planes of the rib elements 5a, 5b, and 5c, and in particular, each free space is located within the respective weld arm sections 3a and 3b. Within both weld arm sections 3a and 3b, the free spaces 8a and 8b are in the same position relative to the passage axis 1b.

[0065] In particular, the cross-sectional view in Figure 3 clearly shows that each of the rib elements 5a, 5b, and 5c has one edge region 7a or 7b on both welded sides 6a and 6b. The edge regions 7a and 7b extend along the outer edges, essentially across the height of the rib elements 5a, 5b, and 5c (viewed in the direction of the passage axis 1b). These edge regions 7a and 7b, particularly the outward-facing end faces of these edge regions, form a welding zone, which is used for welding to the film layer, either alone or in an increasing area. The perspective view in Figure 1 clearly shows that the edge regions 7a and 7b, or the welding zone, converge toward the end of the welding arm. In particular, this gives the welding region a shuttle-like shape.

[0066] Figure 4 clearly shows that the rib elements 5a, 5b, and 5c are connected to the passage wall 1c in the lower end region 2b in such a way that they appear as a single member.

[0067] For the purposes of this invention, Within each of the welding arm portions 3a and 3b, the two adjacent free spaces 8a and 8b, which are located overlapping each other, are open only toward one of the two welding sides 6a and 6b, and closed toward the other by the welding surface 9, and this welding surface connects the overlapping edge regions and increases the welding zone of these edge regions. That is important.

[0068] In Figures 1 to 4, it is evident that the upper free space 8a is open towards the welding side 6b within both welding arm portions 3a and 3b, and is closed towards the welding side 6a by the welding surface 9. Conversely, the lower free space 8b is open towards the welding side 6a and is closed towards the welding side 6b by the welding surface 9. On the same welding side, the embodiments within both welding arms are identical. In more free spaces than two overlapping free spaces, these free spaces are advantageously closed or opened alternately toward one welding side and the other welding side in the direction of the passage axis.

[0069] In particular, the view of the end portion 4b of the welding arm in Figure 2 is, The welding surface 9 that closes the upper free space or the lower free space, or the opening through which these free spaces open outward, is offset on both welding sides, specifically, by the height difference between the two free spaces. This clearly demonstrates that. Welding area 3 is not mirror-symmetric with respect to the front.

[0070] The molded protrusions for forming the free spaces 8a and 8b are formed during injection molding with respect to Figure 2. With respect to the upper free space 8a, in the direction from the welding side 6b to the welding side 6a, it is immersed in the pouring nozzle up to the inner wall of the upper welding surface 9, and, With respect to the lower free space 8b, the material is immersed in the pouring port from the welding side 6a towards the welding side 6b, up to the inner wall of the upper welding surface 9. Demolding can therefore be performed perpendicular to the spacing direction of the welding arm ends 4a and 4b.

[0071] Each of the free spaces 8a and 8b is consistently continuous internally, from the weld surface 9 to the opposite opening, and, advantageously, this free space expands in this direction.

[0072] When viewed perpendicular to the front, the thickness of the welded surface 9 is, in this case, advantageously thinner than the thickness of the thickest rib elements 5a, 5b, and 5c when viewed in the direction of the passage axis 1b. Advantageously, in all possible embodiments, under the concept of "welding surface," not only is a functional surface for welding understood, but a wall element having such a functional surface is also understood.

[0073] Figure 3 shows the progression of the meandering shape in the continuity between the rib elements 5a, 5b, and 5c and the weld surface 9, which occurs outward due to the alternating misalignment of the openings in the weld surface 9 or the free spaces 8a and 8b. The progression of the meandering shape continues in more free spaces than the two free spaces 8a and 8b shown.

[0074] In Figure 2, it is clearly evident that no walls exist around the central front. The rib elements 5a, 5b, and 5c are reinforced by outer weld surfaces 9, which alternately extend outward in the direction of the passage axis 1b, and have the effect of increasing the weld zone.

[0075] Between end region 2a and end region 2b, an illustrated collar portion, which preferably protrudes radially, is arranged around the passage wall 1a, and this collar portion can be used as a stopper for the cap and also carries an original functional element.

[0076] Regarding the first embodiment shown in Figures 1 to 4, further, A unique feature is that there is an open free space on each of the weld sides, that is, for example, the free space 8a extends beyond the sheath surface region 12 that connects both weld arm portions 3a and 3b on the weld side 6b, and one transitions into the other by the groove 13.

[0077] Advantageously, the free spaces 8a and 8b have the same height everywhere outward within the plane of the opening.

[0078] Furthermore, a distinctive feature of this embodiment is that the lowest rib element has a collar portion 11 projecting downward, which in particular is utilized as an increase in the welding zone downward and / or, based on improved flexibility, prevents load stress on the film at this position. Such a collar portion may also be omitted in other embodiments.

[0079] In contrast to the above, Figures 5 and 6 show a second embodiment according to the present invention, which otherwise has the same features, in which the groove 13 is absent. The sheath surface region 12 has a curved course at the same height as the weld surface at the height of the opening in the free space, and these weld surfaces close the other free space on the same weld side.

[0080] Figures 7 and 8 show a third embodiment that otherwise has the same features as those in Figures 1 to 4, which can, however, be formed without the groove 13, and is unique in this embodiment that the thickness of the rib elements 5a, 5b, 5c, or the height of the free spaces 8a, 8b, decreases in the direction toward the weld arm ends 4a, 4b.

[0081] Here, in particular, Figure 8 shows that in this embodiment, the surface effectively used for welding is increased in the direction toward the welding arm ends 4a, 4b, and in particular this gives an increased overlap 14 of the opposing welding surfaces 9 on both welding sides 6a, 6b in a projection perpendicular to the front, compared to other embodiments.

[0082] Figure 9 shows a bottom view of the spout, common to the previous embodiment, which has a colored section 11. From this bottom view, it is clear that the passage wall of the spout within the lower end region 2b has two parallel, opposing flat walls 1c to which rib elements are connected, and the lowest rib element 5c is visible from these rib elements.

[0083] Within the area of ​​the passage wall between these flat walls 1c, the reinforcing ribs 14 are oriented radially inward toward the passage axis 1b.

[0084] Furthermore, it is recognizable that the pouring passage 1 transitions from a cylindrical inner shape to a shape having flat, parallel passage walls 1c at a stepped section 1d, which is the height of the color section having an ingenious function. However, it should be noted that the present invention is not limited to the indicated inner shape of the pouring passage 1 in all possible embodiments.

[0085] Figures 10 and 11 show a diagram of one embodiment in which the collar portion 11 described above is not provided. In this embodiment, the welded area 3 extends downward and terminates at the lower surface of the lowest rib element 5c. In other respects, all the other features described above can also be realized in this embodiment, with the groove 13 as shown here in particular, but similarly, or without the groove 13.

[0086] All figures illustrate embodiments, and in these embodiments, The welding surfaces 9 that close the free space 8a, which are used as welding zones and are located flush with each other, extend at least regionally, and in particular linearly between each welding arm end 4a, 4b and the curved sheath surface region 12, in their extension to the welding arm ends 4a, 4b.

[0087] Within the region between the joints of the rib elements 5a and 5b with respect to both walls 1c of the second end region 2b, the weld zone is increased by a weld surface 9 that may close off free space, and one side transitions advantageously continuously into the other using the outwardly convex curved sheath region 12 described above.

[0088] The present invention is For all shown embodiments, and generally for all possible unshown embodiments of the present invention, the edge regions 7a, 7b are formed with a curved course, particularly between the weld arm end portions 4a, 4b and the outwardly convex curved sheath region 12, including the weld surface 9 that closes the free space. It was also possible to intend that.

[0089] For example, the flush weld surfaces 9 and edge regions 7a and 7b can have a curvature extending in a plane perpendicular to the passage axis 1b, at least geographically, and particularly within a region extending from the outer surface region 12 of the second end region 2b to the weld arm end portions 4a and 4b, and this curvature is formed in a concave shape outward, and in particular, this curvature transitions into the outer surface region 12 which is curved conversely outward.

[0090] Figure 12 shows such a configuration in one embodiment without the color portion 11, in an axial view from below the spout. However, it is possible that this configuration is also intended for embodiments that have the color portion 11, and this is also true with respect to the following figures.

[0091] In relation to the above, Figure 13 shows one embodiment in an axial view from below the spout, in which the flush weld surfaces 9 and edge regions 7a and 7b have a curvature that extends in a plane perpendicular to the passage axis 1b, at least regionally, and particularly in a region extending from the outer surface region 12 of the second end region 2b to the ends 4a and 4b of the weld arm portion, and this curvature is formed in a convex shape outward, and in particular, this curvature transitions outward into the convexly curved outer surface region 12.

[0092] Figures 14 and 15 each show one embodiment in which the welding surface 9 is positioned to protrude outward relative to the edge regions 7a and 7b.

[0093] In this case, in Figure 14, the welding surface 9 has a flat surface, while in Figure 15, this welding surface 9 is curved outward, and in particular, convex outward. This curvature exists within a single plane, and this plane is aligned perpendicularly to the linearly extending edge regions 7a and 7b. This curvature extends in the direction of separation between the marginal regions 7a and 7b.

[0094] It should be noted that the embodiments in Figures 14 and 15 are also compatible with the embodiments in Figures 12 and 13. While this application relates to the invention described in the claims, it may also encompass the following other embodiments. 1. A spout for a film bag, wherein the spout is equipped with a spout passage (1), a. The passage walls (1a, 1c) of the discharge passage (1) are formed as discharge connecting pipes in the first end region (2a), and b. The passage walls (1a, 1c) are surrounded by a welding area (3) in the second end area (2b), c. The welding region (3) has two welding arm portions (3a, 3b), and these welding arm portions extend toward their respective welding arm ends (4a, 4b) in opposite directions perpendicular to the passage axis (1b) of the pouring passage (1), and in particular, they extend away from the passage wall (1c) within the second end region (2b), and, d. Each of the aforementioned welded arm portions (3a, 3b) has a plurality of rib elements (5a, 5b, 5c), these rib elements are connected to the passage wall (1c), and are spaced apart from each other in the direction of the passage axis (1b), and e. Each of the aforementioned rib elements (5a, 5b, 5c) The first welding side (6a) has a first edge region (7a) that extends between the passage wall (1c) and the welding arm end portions (4a, 4b), and The second welding side (6b) has a second edge region (7b) that extends between the passage wall (1c) and the welding arm end portions (4a, 4b), f. The first and second edge regions (7a, 7b) form the first and second welding zones (7a, 7b), and these welding zones (7a, 7b) converge toward the welding arm end portion (4a, 4b). At the above-mentioned spout, g. Within each of the aforementioned welded arm portions (3a, 3b), a single free space (8a, 8b) is formed between two spaced-apart rib elements (5a, 5b / 5b, 5c), and, Each of the aforementioned free spaces (8a, 8b) is open on one of the two aforementioned welding sides (6a, 6b) and closed on the other of the two aforementioned welding sides (6a, 6b) by the welding surface (9). A spout characterized by the following features. 2. Each of the aforementioned welding arm portions (3a, 3b) is: It has at least one free space (8b), in particular a precisely unique free space (8b), which is open on the first welding side (6a) and closed on the second welding side (6b), and It has at least one free space (8a), in particular a precisely unique free space (8a), which is closed on the first welding side (6a) and open on the second welding side (6b). The spout described in item 1 above, characterized by the features described above. 3. The dispensing spout according to claim 1 or 2, characterized in that the free spaces (8a, 8b) located adjacent to each other, particularly overlapping and adjacent, in the direction of the passage axis (1b) are alternately closed to or open to the first welding side (6a) and the second welding side (6b). 4. Looking at a cross-section passing through the welding arm portions (3a, 3b) in a direction perpendicular to the direction of separation of the welding arm portion ends (4a, 4b), and preferably viewed at a distance from the passage axis (1b), The dispensing spout according to claim 3, characterized in that the rib elements (5a, 5b, 5c) and the welded surface (9) that closes one free space (8a, 8b) have a meandering shape. 5. The outlet according to any one of 1 to 4 above, characterized in that the welded surface (9) that closes the free space (8a, 8b) has a wall thickness equal to or less than the wall thickness of the adjacent rib elements (5a, 5b, 5c). 6. The spout according to any one of items 1 to 5 above, characterized in that the free space (8a) expands in the direction from the welding side (6a) where the free space is closed by the welding surface (9) to the welding side (6b) where the free space is open. 7. The spout according to any one of 1 to 6 above, characterized in that each of the rib elements (5a, 5b, 5c) is arranged around a lateral plane (10a, 10b, 10c), and this lateral plane is perpendicular to the passage axis (1b). 8. The spout according to 7 above, characterized in that the surface of the rib elements (5a, 5b, 5c) facing the free space (8a, 8b) is inclined with respect to the lateral plane (10a, 10b, 10c) around which the rib elements (5a, 5b, 5c) are arranged. 9. In the rib element (5c) located closest to the second end of the pouring passage (1), The spout according to any one of 1 to 8, characterized in that a collar portion (11) is formed which increases the welding zone / edge region (7a, 7b) of the rib element (5c) and is directed away from the rib element (5c). 10. In the direction toward the ends of the welding arm portion (4a, 4b), The thickness of at least one rib element (5a, 5b, 5c), as viewed in the direction of the passage axis (1b), is increasing, particularly on one side or both sides of the transverse plane, and / or The height of the free space (8a, 8b), viewed in the direction of the aforementioned passage axis (1b), decreases between the two rib elements (5a, 5b, 5c). A spout as described in any one of the above 1 to 9, characterized by the above. 11. The dispensing spout according to any one of 1 to 10, characterized in that, within both of the welding arm portions (3a, 3b), the free space (8a) which is the same in position with respect to the position of the welding arm portions as viewed in the direction of the passage axis (1b), is closed or open toward the same welding side (6a). 12. Two free spaces (8a) that are arranged in the same way are, The second end region (2b) is joined by a groove (13) across the outer surface region (12) of the second end region (2b), which extends between both of the aforementioned welded arm portions (3a, 3b). In particular, the spout according to claim 11, characterized in that the height of the groove measured in the direction of the passage axis (1b) corresponds to the height of the free space (8a) in the same direction. 13. Within the welding area (3), The aforementioned dispensing passage (1) has two passage walls (1c) that are parallel to each other and located opposite each other with respect to the passage axis (1b). The outlet according to any one of 1 to 12 above, characterized in that the rib elements (5a, 5b, 5c) of both of the welded arm portions (3a, 3b) are joined to these passage walls. 14. The pouring passage (1) has a plurality of reinforcing ribs (14) between two parallel and opposing passage wall regions (1c) within the welding region (3), The dispensing spout according to claim 13, characterized in that these reinforcing ribs extend radially inward from the inner surface of the passage wall. 15. The welding surface (9) that closes the free space (8a, 8b) is With respect to at least one edge region (7a, 7b) of the rib element (5a, 5b, 5c) adjacent to the weld surface, and more preferably with respect to both edge regions (7a, 7b) adjacent to the weld surface, A spout according to any one of the above 1 to 14, characterized in that it is positioned to protrude outward. 16. The protruding weld surface (9) is At least geographically, and particularly at least within the region extending from the sheath surface region (12) of the second end region (2b) to the welding arm end portions (4a, 4b), a. is formed flat, or b. The edge regions (7a, 7b) have a curvature that extends in the direction of separation, and in particular, the curvature is arched outwards. The spout described in item 15 above, characterized by the features described therein. 17. The welding surface (9) that closes the free space (8a, 8b) is The spout according to any one of 1 to 16, characterized in that it is arranged flush with at least one edge region (7a, 7b) adjacent to the weld surface of the rib element (5a, 5b, 5c), preferably both edge regions (7a, 7b) adjacent to the weld surface. 18. The welding surface (9) and the edge regions (7a, 7b) are preferably flush with each other. At least geographically, and particularly at least within the region extending from the sheath surface region (12) of the second end region (2b) to the welding arm end portions (4a, 4b), a. is formed flat, or b. Having a curve that extends in a plane perpendicular to the passage axis (1b), In particular, it is formed in a concave or convex shape outward. A spout as described in any one of the above 15 to 17, characterized by the above.

Claims

1. A spout for a film bag, wherein the spout is equipped with a spout passage (1), a. The passage walls (1a, 1c) of the dispensing passage (1) are formed as dispensing connecting pipes in the first end region (2a), and b. The passage walls (1a, 1c) are surrounded by the welding area (3) in the second end area (2b), c. The welding region (3) has two welding arm portions (3a, 3b), and these welding arm portions extend toward their respective welding arm ends (4a, 4b) in opposite directions perpendicular to the passage axis (1b) of the pouring passage (1), that is, they extend away from the passage wall (1c) within the second end region (2b), and, d. Each welded arm (3a, 3b) has multiple rib elements (5a, 5b, 5c), these rib elements are connected to the passage wall (1c) and are spaced apart from each other in the direction of the passage axis (1b), and e. Each rib element (5a, 5b, 5c) The first welding side (6a) has a first edge region (7a) that extends between the passage wall (1c) and the welding arm end portions (4a, 4b), and The second welding side (6b) has a second edge region (7b) that extends between the passage wall (1c) and the welding arm end portions (4a, 4b), f. The first and second edge regions (7a, 7b) form the first and second welding zones (7a, 7b), and these welding zones (7a, 7b) converge toward the welding arm end portion (4a, 4b). At the above-mentioned spout, g. Within each welded arm section (3a, 3b), a free space (8a, 8b) is formed between two spaced-apart rib elements (5a, 5b / 5b, 5c), and Each free space (8a, 8b) is open on one of the two welding sides (6a, 6b), and closed on the other welding side (6a, 6b) by the welding surface (9). h. Each welding arm section (3a, 3b) It has at least one free space (8b), which is open on the first welding side (6a) and closed on the second welding side (6b), and It has at least one free space (8a), and this free space is closed on the first welding side (6a) and open on the second welding side (6b). A spout characterized by this feature.

2. The dispensing spout according to claim 1, characterized in that adjacent free spaces (8a, 8b) located in the direction of the passage axis (1b) are alternately closed or open to the first welding side (6a) and the second welding side (6b).

3. Looking at a cross-section passing through the welding arm portions (3a, 3b) in a direction perpendicular to the direction of separation of the welding arm portions (4a, 4b), and preferably viewed with a distance from the passage axis (1b), The spout according to claim 2, characterized in that the rib elements (5a, 5b, 5c) and the welded surface (9) that closes one free space (8a, 8b) have a meandering shape.

4. The spout according to claim 1, characterized in that the welded surface (9) that closes the free space (8a, 8b) has a wall thickness equal to or less than the wall thickness of the adjacent rib elements (5a, 5b, 5c).

5. The spout according to claim 1, characterized in that the free space (8a) expands in the height direction from the welding side (6a) where the free space is closed by the welding surface (9) to the welding side (6b) where the free space is open.

6. The spout according to claim 1, characterized in that each rib element (5a, 5b, 5c) is arranged to surround a unique lateral plane (10a, 10b, 10c) that extends perpendicular to the passage axis (1b).

7. The spout according to claim 6, characterized in that the rib elements (5a, 5b, 5c) are inclined with respect to the intrinsic lateral plane (10a, 10b, 10c) of the rib elements.

8. In the rib element (5c) located closest to the second end of the pouring passage (1), The spout according to claim 1, characterized in that a collar portion (11) is formed which increases the welding zone / edge region (7a, 7b) of the rib element (5c) and is directed away from the rib element (5c).

9. In the direction toward the welding arm end portions (4a, 4b), The thickness of at least one rib element (5a, 5b, 5c), as viewed in the direction of the passage axis (1b), increases on one side of the transverse plane or on both sides, and / or the height of the free space (8a, 8b), as viewed in the direction of the passage axis (1b), decreases between the two rib elements (5a, 5b, 5c). The spout according to feature 6.

10. The outlet according to claim 1, characterized in that, within both welding arm portions (3a, 3b), the free space (8a) which is the same in position with respect to the position of these welding arm portions as viewed in the direction of the passage axis (1b), is closed or open toward the same welding side (6a).

11. The two free spaces (8a) that are arranged in the same way are, The second end region (2b) is joined by a groove (13) across the outer surface region (12) of the weld arm (3a, 3b), and, The spout according to claim 10, characterized in that the height of the groove, measured in the direction of the passage axis (1b), corresponds to the height of the free space (8a) in the same direction.

12. Within the welding area (3), The dispensing passage (1) has two passage walls (1c) that are parallel to each other and facing each other with respect to the passage axis (1b). The spout according to claim 1, characterized in that the rib elements (5a, 5b, 5c) of both welded arm portions (3a, 3b) are joined to these passage walls.

13. The pouring passage (1) has multiple reinforcing ribs (14) between two parallel and opposing passage wall regions (1c) within the welding region (3). The dispensing spout according to claim 12, characterized in that these reinforcing ribs extend radially inward from the inner surface of the passage wall.

14. The welding surface (9) that closes the free space (8a, 8b) is With respect to at least one edge region (7a, 7b) of the rib element (5a, 5b, 5c) adjacent to the weld surface, and more preferably with respect to both edge regions (7a, 7b) adjacent to the weld surface, The spout according to claim 1, characterized in that it is positioned to protrude outward.

15. The protruding weld surface (9) is Within the region extending from the outer surface region (12) of the second end region (2b) to the end portions of the welding arm (4a, 4b), a. Formed flat, or b. The edge regions (7a, 7b) have a curvature that extends in the direction of separation, that is, they have an outwardly arched curvature. The spout according to feature 14.

16. The welding surface (9) that closes the free space (8a, 8b) is The spout according to claim 1, characterized in that it is arranged flush with at least one edge region (7a, 7b) of the rib element (5a, 5b, 5c) adjacent to the weld surface, preferably both edge regions (7a, 7b) adjacent to the weld surface.

17. The welding surface (9) and the edge regions (7a, 7b) are preferably flush with each other. Within the region extending from the outer surface region (12) of the second end region (2b) to the end portions of the welding arm (4a, 4b), a. Formed flat, or b. Having a curve that extends in a plane perpendicular to the passage axis (1b), That is, it is formed in a concave or convex shape outward. The spout according to feature 14.

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