MXPA96004255A - Cuboid container with triangular pl tag - Google Patents

Abstract

The present invention relates to a cuboid container with a flat triangular tongue, especially a container with a projection with a central seam or with a corner seam, the composite having at least one internal protection layer made of paper or cardboard, a layer of coupling, a barrier layer, preferably made of aluminum, and a two-sided plastic coating made of polyethylene (PE), with an opening area provided in the triangular tab of the container forming the pouring opening after cutting, with a pouring element having a closing lid and whose flange that surrounds the opening area is rigidly attached to the surface of the container, and whose closing lid simultaneously represents the opening means and with the opening area having a softening to support the process of opening, characterized in that the pouring element (2) is arranged on the side of the surface of the container in which the stitching (5) of the triangular tongue, and in that the portion of the flange (4) of the pouring element (2) which faces the seam (5) of the triangular tongue reaches approximately to the seam of the triangular tongue and to the seam (5) of the triangular tongue. folding edge of the projection of the container, and is fixed between the surface of the container and the seam (5) of the triangular tongue folding

Description

PKL Verpackungssysterne GmbH Rurstrasse 58 52441 Linnich Cuboid container with flat triangular tongue The invention relates to a cuboid container with a flat triangular tongue, in particular to a container with a tongue with a central seam or a corner seam, the composite having at least one inner protection layer made of paper or cardboard, a layer of coupling, a layer acting as a barrier, preferably made of aluminum, and a two-sided plastic coating made of polyethylene (PE) with an opening zone provided in the triangular tab of the container, which forms the opening for pouring after cutting , with a pouring element provided with a reclosable closing lid whose flange that surrounds the opening area is rigidly connected to the surface of the container, with the closure cap simultaneously representing the means for opening and the area opening having a recess to support the opening process, as well as a method for producing such a container with a flat triangular tongue.

The cuboid containers with flat triangular tongue are known in numerous provisions. They are mainly used in the field of packaging for liquids in relation to cold fillings, sterile cold, hot and aseptic. Generally these containers can not be closed once they have been opened. Accordingly, in relation to composite containers with a flat triangular tongue of the aforementioned kind, it has already been proposed to have a pouring element on the triangular tongue of the container having its respective closing lid incorporated (DE 38 08 303 Al) . A circular cutting line is provided to soften the material of the triangular tongue which is in the area of the cardboard layer and the outer layer of polyethylene, in which a respective slit, which is attached to the closure cap in a single piece and corresponds to the shape of the circular cutting line, it is pressed into the material of the container in order to open the container. In order to more easily cut the softened cutting line, the lower edge of the tube is provided with a mechanical opening means such as knives or the like.

The aforementioned container composed of a flat triangular tongue can be improved in several aspects. It is obvious that for the purpose of storage and transport it must be ensured that the slot connected to the closure lid must not penetrate the material prematurely, that is, before the container is first used. For this purpose, a strip according to the current state-of-the-art technology is provided with respect to this class of inventions, which fixes, at a specific distance, the closing lid and the protrusion of the pouring element that surrounds the cutting line. Only after detaching the strip it is possible to press the opening slit into the composite material of the container by pressing the closure cap. This results in that said pouring element must necessarily have a certain minimum height. This constitutes a disadvantage due to the stackability that is required for composite packages with flat triangular tongue.

Other known containers with a flat triangular tongue (EP 0 238 947 Bl) propose that the pour opening be opened by pulling on a strip covering the opening area. Although this results in a particularly flat overall height, with this solution the containers can not be closed tightly again. In addition, with this solution, the sealing layer of the liquid and the layer acting as a barrier must be detached and re-sealed immediately, which results in risks related to tightening and sterility.

Although the requirement related to the fact of reclosing and sealing is sufficiently satisfied by the pouring elements applied to the triangular tab of the container, the resultant that is generally projected outwards in the joint of the lever mechanisms, results in the release of the pour spout in the known embodiments, due to the weak adhesion of the layer, of the cardboard layer or of the polyethylene cardboard layers. Furthermore, the detachment of the pouring elements frequently occurs during the transport and stacking of such containers with flat triangular tongue, especially as a result of the total height of the pouring element. Such a container can no longer be used and is no longer accepted by retailers or consumers.

From this, the present invention is based on the objective of providing and developing a cuboid container composed with a flat triangular tongue of the aforementioned type, plus a process for its production, so that a reliable connection between the pouring element and the triangular tongue of the container. In addition, it is desired that the total height of the pouring element used be reduced.

With respect to the composite container with flat triangular tongue, the solution to this question consists in having the pouring element on the side of the container surface where the seam of the triangular tongue is folded and where the part of the eyelash of the element The pouch facing the seam of the triangular tab extends approximately to the seam of the triangular tab and up to the folded edge of the tab of the container and is fixed between the surface of the container and the seam of the folded triangular tab. As a result of securely fixing the flange of the pouring element between the seam of the triangular tongue and the upper side of the container, the release of the pouring element during opening and handling is reliably avoided.

Regarding the production process of such a composite container with flat triangular tab, the objective is achieved by the following steps: producing the opening area in the internal protection layer in the area of the future pouring opening; Corrugate the multilayer compound; pre-fold the blank; sealing the longitudinal seam by forming it into a tubular shaped container; fold and seal the bottom of the container; fill the container; fold and seal the upper seam of the triangular tongue; applying the pouring element having a closure cap, in the opening area with a seam of the triangular tongue projecting vertically; fold the seam of the triangular tongue; fold and seal the protrusions of the container.

Another object of the invention is that the part of the flange of the pouring element that is avoided from the seam of the triangular tongue is disposed beyond the edge of the element in a sufficient piece with a support square partially surrounding the side wall of the element. container and the front wall of the container. The support square is fixedly connected with the projections of the container after sealing on the projections of the container. In such embodiment of the pouring element the adhesion takes place in three different places of the container. In addition to the improved new adhesion of the pouring element and the surface of the container (caused by the support square), it also reliably ensures that the pouring element does not move from the opening area during application. It is understood that different sizes of pouring elements have to be used for different sizes of containers, in all cases always in relation to the size of the flange and the support square. As a result of the fact that the application of a pouring element provided with a support square takes place when the seam of the triangular tongue is still projecting perpendicularly and the projections of the container project horizontally, it is necessary to provide a cavity in the area of the respective protrusion of the container, between the part with front side of the support square and the actual pouring element. The cavity is favorably disposed in the form of a groove, and the width of the groove is slightly greater than the thickness of the protrusion of the container. In this way the sealing of the projections on the side of the face of the container is stably sealed a part of the support square between the projection of the container and the front wall thereof, and in this way, the connection between the pouring element and the container. In order to soften the opening area of the area of the future discharge hole, it is possible, on the one hand, to completely omit the protection layer in the area of the opening area and that after drilling or cutting the opening area in this area only the layers of polyethylene and the layer that forms the barrier have to be destroyed. It is also possible that for softening purposes, the internal protection layer and, optionally, the coupling layer of the area of the opening area are provided with a cutting line, for example semicircular. This cutting line can also be perforated outwards, but preferably such a cutting line is produced by means of a laser beam cut.According to yet another object of the invention, the pouring element is provided with a through opening whose size and shape coincide with the opening area provided in the triangular tab of the container. In addition, the closure cap is arranged as an opening lever according to the invention, and such lever is connected to the pouring element, so that during its operation the container is opened, for example, in a semicircular manner, in the area of the opening area. For this purpose, the closing lid is provided, according to another objective of the invention, with two laterally projecting bolts for an articulated support, which are inserted in their respective recesses of the pouring element. The cavity that receives the bolts is favorably disposed laterally above the through opening of the pouring element. The closure cap arranged as an opening lever and the pouring element are created in two parts, and the cavity of the pouring element is arranged in such a way that a subsequent clamping of the bolts is allowed.

Consequently, before the application of the pouring element that has the closing lid it is necessary to join both parts.

It has been particularly favorable for the bolts to divide the opening lever at a ratio of 1: 5 to 1: 3 (pressure lever: handle lever). In this way, a relatively simple opening of the container is ensured as a result of the action of the lever. To ensure that the closure cap can be firmly closed with the pouring element to achieve the desired new closure, yet another objective of the invention provides that the closure cap and / or the closure element have means for snapping the closure cap and leave it closed.

A further embodiment of the invention provides that the pouring element is placed towards the front wall of the container with a pouring slot. This ensures that after spillage, as a result of the tip drip edge, the liquid can not run down along the front side of the container, and that any remaining residual liquid returns to the interior of the container through the pour slot. In this way, the danger of the closure cap getting stuck is minimized The invention is now explained in more detail with reference to the attached drawing in which only one embodiment thereof is shown, wherein: Fig. 1 shows a container with a flat triangular tongue, according to the invention, in a perspective view; Fig. 2 shows the pouring element of the container with flat triangular tongue according to the invention, in a view from the top; Fig. 3 shows a section through the pouring element along line III -III of Fig. 2; Fig. 4 shows a section through the pouring element along line IV -IV of Fig. 2; Fig. 5 shows the closure cap provided for the pouring element according to the invention in a view from the top; Fig. 6 shows the closure lid of Fig. 5 in a side view in the direction of arrow VI; Fig. 7A shows a first embodiment of the pouring element applied in the flat triangular tab container, in a cross section along the line VII-VII of Fig. 1; Fig. 7B shows a second embodiment of the pouring element applied in the flat triangular tab pack, in a cross section along the line VII-VII of Fig. 1; Fig. 7C shows another embodiment of the pouring element applied in the flat triangular tab pack, in a cross section along the line VII-VII of Fig. 1; Figs. 8A and 8B show embodiments of possible securing means in the pouring element.

Fig. 1 depicts a cuboid container with flat triangular tongue according to the invention shown entirely in a perspective view. It represents a pouring element 2 with a closing plug 3 which simultaneously represents the opening means of the container with flat triangular tongue 1. A flange 2 of the pouring element 2, which surrounds the opening area (not shown) on the upper side of the container, is rigidly attached to the surface of the container.

Fig. 1 further shows that the pouring element 2 is arranged on the side surface of the container in which the seam 5 of the triangular tongue of the flat triangular tab container 1 is folded, and that the part of the flange 4 of the pouring element 2 which is opposite the seam 5 of the triangular tongue reaches approximately to the seam 5 of the triangular tongue and, ascendingly, to the folding edge K of the protrusion 0 of the package and is fixed between the surface of the container and the seam 5 of the folded triangular tongue. In this way, the pouring element 2 is fixed along its entire length and is determined by the lateral face sealing of the protrusions of the container (not shown in greater detail). The stress that occurs during the opening of the container exerted by the closure cap 3 as an opening means can be broken downwards into a vertical component Fv and a horizontal component F. It can be clearly seen that with the special arrangement of the flange 4 of the pouring element 2, any detachment of the pouring element 2 is reliably prevented since the portion of the flange 4 which reaches the seam 5 of the triangular tongue is superimposed by the seam of the folded triangular tongue. This fact, and the sealing along the entire length of the flange 4, reliably counteracts the vertical component Fv of the opening force. The horizontal component Fh is absorbed, on the one hand, by the sealing on the flange 4 and, on the other hand, because the flange 4 of the region of the seam 5 of the triangular tongue reaches the folding edge K of the projection 0 of the container and is fixed by sewing of the triangular tongue folded and the nose 0 of the sealed container.

To further increase the connection of the pouring element 2 and the container with flat triangular tab 1, it is arranged, according to the invention, that the portion of the flange 4 of the pouring element 2 which is prevented from the seam 5 of the tongue The triangular shape reaches above the edge of the container and is arranged in one piece with a support square 6 that partially surrounds the side wall and the front wall of the container. It can be seen that the portion of the lateral face of the support square 6 has a cavity 7 through which the projection of the container (not shown in greater detail) extends. As a result of the embodiment presented, and therefore preferred, the pouring element 2 binds more rigidly to the surface of the container. The portion of the support square 6 projecting on the front wall of the container is closed between the front wall of the container and the projection 0 which is bent so that the components Fv and F of the opening effort can be better absorbed. In this way, any detachment of the pouring element 2 is reliably excluded.

In Figs. 2 to 6 show the arrangement of such a possible embodiment of the pouring element 2 with the respective closure cap 3 according to the invention. In this way, the closure cap 3 is hinged to the pouring element 2 in such a way that when operated, the container with flat triangular tongue 1 opens in the area of the opening area, as will be explained later in more detail by reference to Figs. 7A to 7C. For the articulated support of the pouring element 2, the closing lid 2 has two laterally projecting bolts 8 which are inserted into the cavity 9 of the pouring element 2. In the embodiment shown, and therefore preferred, of the 2, the cavity 9 receiving the bolts 8 is disposed on the opening area on the side of the through opening 12.

Figs. 7A to 7C now show several embodiments of the pouring element 2 according to the invention, applied in a container with flat triangular tongue which is indicated by dashed lines. You can see that the bolts 8 divide the closing plug 3, same that is arranged as an opening lever, approximately with a ratio of 1: 4, representing with that relation the one that exists between the pressure piece of the lever and the handle of the lever. Figures 7A to 7C show, by a dotted line, the opening position of the closure cap 3. To ensure reclosure, the opening lever 3, as indicated in Figs. 7A and 7B, has two pressure-sealing protrusions 10, which are arranged on one side of the lever area of the handle, and are inserted into their respective cavities of the pouring element (not shown in greater detail). Fig. 7C shows a preferred embodiment. The pouring element 2 has a clamp protrusion 11 which cooperates with a respective cavity in the opening lever (not shown in greater detail).

The common characteristic of the embodiments shown in Figs. 7A to 7C is that the closure cap 3 presses the container in the area of the opening surface (not shown in greater detail) and thus forms a through opening 2. FIG. 1 and FIG. 7 show, in addition, that the pouring element 2 shows a pouring slot 13 which allows pouring without draining the contents of the container.

In addition, Figs. 2 and 5 show that in the embodiment shown, and therefore preferred, the closure cap 3 has a sealing edge 14 which overlaps the opening area, at its front edge, and which rests on a respective cavity 15 of the pouring element 2 when the closing lid 3 is closed.

Finally, Figs. 8A and 8B show that it is possible to use different variants to hold the bolt 8 in the pouring element 2. The variant shown in Fig. 8A corresponds to the embodiment of the cavity 9 shown above in Fig. 3. Fig. 8B shows an alternative The pressure closure of the lid 3 in the pouring element 2 does not occur there vertically to the pouring surface 2, but at an angle of approximately 45 °. The advantage of this embodiment can be observed during the opening movement. The advantage of this embodiment can be seen because during the opening movement a better support of the bolt 8 in the cavity 9 'is ensured, and thus it is prevented that by carelessness it can be "pulled out" of the closing lid 3.

Claims (17)

1. A cuboid container with a flat triangular tongue, in particular a container with projection with a central seam or with a corner seam, the composite having at least one internal protection layer made of paper or cardboard, a coupling layer, a layer of barrier, preferably made of aluminum, and a two-sided plastic coating made of polyethylene (PE), with an opening area provided in the triangular tab of the container that forms the pouring opening after cutting, with a pouring element having a closing lid and whose flange that surrounds the opening area is rigidly attached to the surface of the container, and whose closing lid simultaneously represents the opening means and with the opening area having a softening to support the opening process , characterized in that the pouring element (2) is arranged on the side of the surface of the container in which the seam (5) of the tongue is folded to triangular, and in that the portion of the flange (4) of the pouring element (2) that faces the seam (5) of the triangular tongue reaches approximately to the seam of the triangular tongue and to the folding edge of the protrusion. of the container, and is fixed between the surface of the container and the seam (5) of the folded triangular tab.

2. A container with flat triangular tongue, as claimed in claim 1, characterized in that the portion of the flange (4) of the pouring element is avoided from the flat triangular tongue (5) and goes beyond the edge of the container and is arranged in one piece with the support square (6) partially surrounding the side wall and the front wall of the container.

3. A container with a flat triangular tongue. as claimed in claim 2, characterized in that it has a cavity (7) in the region of the respective projection of the container, between the portion of the lateral face of the support square (6) and the pouring element (2) real.

4. A container with flat triangular tongue as claimed in claim 3, characterized in that the cavity (7) is arranged as a slotted cavity and the width of the groove is only slightly greater than the thickness of the protrusion of the container.

5. A container with flat triangular tongue as claimed in any of claims 1 to 4, characterized in that the inner protection layer, as the softening element and the coupling layer, are omitted in the area of the opening.

6. A container with flat triangular tongue as claimed in any of claims 1 to 5, characterized in that the internal protection layer acting as a softening has a notch in the area of the opening area.

7. A container with flat triangular tongue as claimed in any of claims 5 or 6, characterized in that the slit and / or notch is made / cut with laser beams.

8. A container with flat triangular tab as claimed in any of claims 1 to 7, characterized in that the pouring element (2) has a through opening (12) that coincides with the opening area, in terms of size and shape.

9. A container with flat triangular tab as claimed in any of claims 1 to 8, characterized in that the closure cap (3) is arranged as an opening lever that is particularly joined to the pouring element (2) that when the container is operated with a triangular tongue (1) opens in the area of the area opening.

10. A container with flat triangular tongue as claimed in claim 9, characterized in that the closure cap (3) has two lateral bolts (8) for an articulated support in the pouring element (2) and that such bolts are they enter into their respective cavities (9, 9 ') in the pouring element (2).

11. A container with flat triangular tongue as claimed in claim 10, characterized in that the cavities (9, 9 ') that receive the bolts (8) are arranged in the pouring element (2) on the side of the through opening (12).

12. a container with flat triangular tongue as claimed in claims 10 or 11, characterized in that the cavities (9, 9 ') of the pouring element (2) allow a subsequent closure of the bolts (8).

13. A container with flat triangular tongue as claimed in any of claims 9 to 12, characterized in that the bolts (8) divide the opening lever (3) in a ratio of 1: 5 to 1: 3. (pressure lever: handle lever).

14. A container with flat triangular tab as claimed in any of claims 1 to 13, characterized in that the closure cap (3) and / or the pouring element (2) contains means (10) for closing the closure cap (3) under pressure and leaving it in its closed position.

15. A container with flat triangular tab as claimed in any of claims 1 to 14, characterized in that the pouring element (2) has a pouring groove (13) towards the front wall of the container.

16. A process for producing a cuboid container composed of flat triangular tab as claimed in any of claims 1 to 15 characterized by the following steps: produce softening in the internal protection layer in the area of the future pouring opening; Corrugate the multilayer compound; pre-fold the blank; sealing the longitudinal seam by forming it into a tubular shaped container; fold and seal the bottom of the container; fill the container; fold and seal the upper seam of the triangular tongue; applying the pouring element having a closure cap, in the opening area with a seam of the triangular tongue projecting vertically; fold the seam of the triangular tongue; fold and seal the protrusions of the container.

17. A process as claimed in claim 16, characterized in that the application of the pouring element occurs by means of a melting adhesive. SUMMARY The specification represents and describes a cuboid container with a flat triangular tongue, the composite having at least one internal protection layer made of paper or cardboard, a coupling layer, a barrier layer and a two-sided plastic coating made of polyethylene. (PE), with an opening area provided in the triangular tab of the container, which forms the pouring opening after cutting, providing a pouring element (2) having a closure cover (3) that can be returned to closing whose flange (4) surrounding the opening area is rigidly attached to the surface of the container, and the closing lid (3) simultaneously represents the opening means. A reliable connection of the pouring element (2) and of the container is ensured, in such a way because the opening area has a support softening, because the pouring element (2) is arranged on the side of the container surface where the seam (5) of the triangular tongue is folded, and because the part of the flange (4) of the pouring element (2) that faces the seam of the triangular tongue reaches approximately until the seam of the triangular tongue and until the folded edge of the projection of the container, and is fixed between the surface of the container and the seam (5) of the folded triangular tab. In addition, a process for producing such a container with a flat triangular tongue is described. It is intended to publish Fig. 1