CONTAINER COMPRISING RUPTURABLE POUCH ARRANGED INSIDE CONTAINER

Abstract

Container comprising a bottom portion and a side wall portion extending upwardly from the bottom portion, said container being at least partially filled with a first material, said container further comprising a pouch filled with a second material, said pouch being arranged inside the container. Said pouch is arranged to be fastened to the bottom portion of the container such that at least a portion of the first material is arranged above the pouch and in that the pouch is rupturable. In this way, a container is provided whereby a second material can be mixed with a first material in a safe manner with a lowered risk of splashing.

Claims

1. A container comprising a bottom portion and a side wall portion extending upwardly from the bottom portion, said container being at least partially filled with a first material, said container further comprising a pouch filled with a second material, said pouch being arranged inside the container, wherein said pouch is fastened to the bottom portion of the container such that at least a portion of the first material is arranged above the pouch and in that the pouch is rupturable.

2. The container according to claim 1, wherein the pouch has an outer surface and in that the pouch is arranged offset from the side wall portion such that some of the first material is arranged between the outer surface of the pouch and an inner surface of the side wall portion.

3. The container according to claim 1, wherein the pouch comprises a flexible material.

4. The container according to claim 1, wherein the pouch comprises a weakened portion which is arranged to rupture and release the second material from the pouch when a predetermined pressure or force is applied to the pouch.

5. The container according to claim 1, wherein the pouch is fastened to the bottom portion via an adhesive or via a weld.

6. The container according to claim 1, wherein the container further comprises an intermediate holding element arranged to fasten the pouch to the bottom portion of the container.

7. The container according to claim 6, wherein said intermediate holding element is a planar element having a planar surface area essentially corresponding to a surface area of an inside surface of the bottom portion.

8. The container according to claim 6, wherein the pouch is fastened to an upper surface of the intermediate holding element via a weld or via an adhesive.

9. The container according to claim 6, wherein the pouch is fastened to the intermediate holding element via a mechanical gripping mechanism.

10. The container according to claim 1, wherein the second material is a liquid.

11. The container according to claim 1, wherein the container is arranged such that an implement can be inserted into the first material which pierces the pouch or causes the pouch to rupture or burst when force is applied.

12. The container according to claim 1, wherein the container is arranged such that in order to rupture the pouch, it is necessary to insert an implement into the first material to agitate the first material and/or apply pressure directly to the pouch.

13. The container according to claim 11, wherein the container is arranged such that the implement is inserted into the first material via an opening of the container.

14. The container according to claim 1, wherein an area of an opening of the container is larger than an area of the inside surface of the bottom portion.

15. The container according to claim 1, wherein the first material is a material for forming a surface covering of a building, wherein the first material includes a mortar material, a filler material, and/or a paint like material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the following, the invention will be described in greater detail with reference to embodiments shown by the enclosed figures. It should be emphasized that the embodiments shown are used for example purposes only and should not be used to limit the scope of the invention.

[0021] FIG. 1 shows a schematic side cross section view of a first embodiment according to the invention prior to mixing.

[0022] FIG. 2 shows a schematic side cross section view of the embodiment of FIG. 1 after mixing has occurred.

[0023] FIG. 3 shows a schematic front view of one embodiment of a pouch for a container according to the invention.

[0024] FIG. 4 shows a schematic side view of the pouch of FIG. 3.

[0025] FIG. 5 shows a schematic side view of an intermediate holding element in the form of a false bottom plate for a container according to the invention.

[0026] FIG. 6 schematically shows a step in the process of fastening the pouch of FIGS. 3 and 4 to the false bottom plate of FIG. 5.

[0027] FIG. 7 schematically shows the pouch and the false bottom plate being inserted into a container.

[0028] FIG. 8 schematically shows the container of FIG. 7 filled with a first material.

[0029] FIG. 9 shows a schematic cross sectional side view of another embodiment of a container according to the invention.

[0030] FIG. 10 shows a schematic cross sectional side view of another embodiment of a container according to the invention.

[0031] FIG. 11 shows a schematic cross sectional side view of yet another embodiment of a container according to the invention.

[0032] FIG. 12 shows a schematic side view of an embodiment of a pouch suitable for a container according to the invention.

[0033] FIGS. 13 and 14 show two views of a false bottom plate having a mechanical clip mechanism for holding a pouch.

[0034] FIG. 15 shows the false bottom plate of FIGS. 13 and 14 in a configuration just after manufacture.

[0035] FIG. 16 schematically shows how a pouch could be fastened to the false bottom plate of FIGS. 13-15.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] FIG. 1 shows a container 2 comprising a bottom portion 4, a side wall portion 6 and an opening 8. The upper edge 10 of the side wall portion defines a rim 12 which encircles the opening 8. The bottom portion 4 has an inside surface 14 and an exterior surface 16. Likewise, the side wall portion 6 also has an inside surface 18 and an exterior surface 20. The container 2 is filled with a first material 22. From the figures, it can be seen that the area of the opening 8 is larger than the area of the inside surface 14 of the bottom portion 4. In this way, the containers are stackable one inside the other when they are empty. This type of container is well known in the art.

[0037] Containers of this kind are well known in the art and can be found in many shapes and sizes and can be used to hold many different types of materials. Likewise, the container itself can be made from many different types of materials. In many cases, the container is made from a plastic injection moulded material, for example Poly Propylene. In other cases, the container could be made from a metal material. In many cases, the container can be a cylindrical container with a circular cross section. In other cases, the container has a more rectangular cross section. However, many shapes can be imagined.

[0038] According to the invention, a pouch 24 is arranged on the inside surface 14 of the bottom portion 4. The pouch in the current embodiment is made from a flexible plastic foil like material, similar to a plastic bag. The pouch can be made in many different ways. Suitable techniques for manufacturing suitable pouches should be available in the art.

[0039] In the current embodiment, the pouch is filled with a liquid material 26. In this embodiment the liquid material is of a kind which is dangerous for human contact and it is therefore desired to prevent the second material from getting into contact with the user. The pouch 24 is fastened to the inside surface 14 of the bottom portion 4 of the container via an adhesive 28.

[0040] Prior to use, it is desired to mix the first and second materials together. A stirrer 30 is therefore introduced into the container. The stirrer can be pressed into contact with the pouch thereby causing the pouch to rupture. Or the stirrer can stir the first material which causes force to be applied to the pouch which causes the pouch to rupture. FIG. 2 shows how the pouch 24 has ruptured. FIG. 2 also shows that even after rupturing, the material of the pouch itself remains fastened to the bottom portion of the container. Likewise, since the material of the pouch itself is flexible, the pouch itself should not prevent the user from accessing the contents of the container.

[0041] In the current embodiment, and in some of the other embodiments disclosed in this application, the pouch is arranged near the centre of the container and at the bottom of the container. In this way, the first material surrounds the pouch. In this case, there is first material 32 above the top surface of the pouch. Likewise, there is first material 34 between the sides of the pouch and the side wall portion of the container. Were the pouch arranged close to the side wall portion, then the second material could slide up along the side wall portion of the container and splash out the top of the container in a dangerous manner. By placing the pouch such that there is first material all around the pouch, there is less risk of splashing and simultaneously there is also a better mixing effect.

[0042] In one concrete and non-limiting embodiment, the container is a 10 L plastic injection moulded bucket with a circular cross section filled with a mortar material used for exterior surface finishing in the construction industry. The second material inside the pouch comprises Natrium/Sodium hydroxide which is caustic and can cause injury to a user when it gets in contact with their skin.

[0043] In the embodiment shown in FIGS. 1 and 2, the pouch 24 was fastened directly to the inside surface 14 of the bottom portion 4 of the container. However, in other embodiments, the pouch could be fastened to the bottom portion of the container via an intermediate holding element which is inserted into the container prior to filling the container with the first material. Some example embodiments are discussed in more detail below.

[0044] FIGS. 3 and 4 show another embodiment 40 of a pouch filled with a second material 42. The pouch is again made from a flexible plastic material in the form of a sheet or foil. In the figures, the pouch is shown having a curved shape, however, the pouch could also be formed with other shapes, for example, a rectangular shape. In one example, not shown, a plastic tubelike material, is welded shut at one end with a linear weld perpendicular to the extension of the tubular material. Second material can then be filled into the tube in the desired amount. The tube can then be welded shut, again with a linear weld. A closed and filled pouch is produced in this way in a simple manner. In the embodiment shown in the figures, two flaps 44 of excess material extend from the pouch and can be used to fasten the pouch to the bottom portion of the container.

[0045] Since welding or gluing the pouch to the inside surface of the bottom portion of the container can be complicated to implement in a production environment, the pouch can be fastened to a holding element 50 as shown in FIGS. 5 and 6. The holding element 50 of the current embodiment is formed as a planar element having a cross section with a planar shape which matches the planar surface area of the inside surface of the bottom portion of the container. In this way, the holding element can be inserted into the container and it will assume a position at the bottom of the container. It could therefore be called a false bottom plate like element.

[0046] The holding element 50 has a slot 52 in the centre portion of the holding element. As shown in FIG. 6, the flaps 44 of the pouch 40 can be inserted through the slot and then folded up on the rear surface 54 of the holding element. An adhesive 56 applied on the rear surface 54 holds the flaps of the pouch in place. In this way, a strong connection is formed between the pouch and the holding element 50. The flaps 44 could also be welded to the rear surface of the holding element.

[0047] Once the pouch is securely fastened to the holding element, the pouch and holding element assembly can be inserted into the bottom of a container. This is shown in FIG. 7. In FIG. 8, first material is filled into the container thereby covering the pouch completely. Due to the weight of the first material, the holding element 50 is held in place, pressed against the inside surface of the bottom portion of the container. In this way, the pouch is likewise held fastened to the bottom portion of the container and located in the centre of the container.

[0048] FIG. 9 shows another schematic embodiment of a container according to the current invention where a pouch 40 with flaps 44 is glued via an adhesive 56 to the inside surface 14 of the bottom portion 4 of the container 2. Instead of gluing, it would also be possible to weld the pouch to the container via the flaps.

[0049] FIG. 10 shows another schematic embodiment. In this embodiment, a pouch 40 with a flap 44 is welded or glued via an adhesive 56 to a holding element 50 which is again shaped to fit into the bottom of the container. One advantage of using a holding element to hold the pouch, is that the pouch and the holding element could be chosen as one type of material while the container was chosen as another material. For example, the pouch could be chosen as a poly ethylene material which has good rupture properties and then it could be welded directly to a poly ethylene holding element. The container itself could be manufactured from a poly propylene material which has good robust properties for the actual container.

[0050] FIG. 11 shows an embodiment, where the pouch 58 is formed as a flatter pouch which is welded or glued via an adhesive 56 to the holding element at at least two points via at least two flaps 59. By using a flatter pouch, the pouch could fit between two containers when stacked in an empty configuration. In other words, the height of the pouch and holding element combination is less than the distance between the exterior surface 16 of the bottom portion of an upper stacked container and the inside surface 14 of the bottom portion of a lower stacked container.

[0051] FIG. 12 shows one embodiment of a pouch 60 with a weakened area in the form of a number of lines of weakness 60 introduced into the material of the pouch. When pressure/force is applied to the pouch, the pouch will rupture along the lines of weakness.

[0052] FIGS. 13-16 illustrate another embodiment of a holding element 70. In this case, the holding element 70 is formed as a planar disc shaped element 70. Two slots 72 are provided in the disc into which flaps of the pouch can be inserted. Two bendable portions 73 are arranged in the disc on each side of the slots. The two bendable portions are provided with snap engagement means 74 which cooperate with corresponding snap engagement means 76 on the disc itself. In this embodiment the snap engagement means 74,76 are arranged as holes and plugs which fit into each other and engage each other. When the flaps 44 of the pouch 40 are inserted through the slots, the bendable portions are bent such that they sandwich the flaps between the disc and the bendable portions. This is shown in FIG. 16. When the snap engagement means are engaged, the flaps are held tightly in place and the pouch is therefore also held tightly in place against the holding element. It should be noted that FIGS. 13 to 15 show the holding element from the bottom. In use, the bendable portions will bend downwardly as shown in FIG. 16.

[0053] It is to be noted that the figures and the above description have shown the example embodiments in a simple and schematic manner. Many of the specific mechanical details have not been shown since the person skilled in the art should be familiar with these details and they would just unnecessarily complicate this description.