Packaging system comprising a plurality of sub units, and a sub unit

Abstract

A sub unit and a packaging system including a plurality of sub units. The sub unit is formed with a tapered body having sidewalls towards a narrow end from a first opposing or outer surface at an end opposite the narrow end. The packaging system includes a plurality of sub units, wherein the sub units are configured to be positioned so that the first opposing surfaces form an outside of the packaging system.

Claims

1. A packaging system comprising a plurality of sub-units and a housing with inner walls, the sub-units having a tapered structure towards a narrow end from a first opposing surface at an end opposite the narrow end, each of the sub-units being shaped as one of, a pyramid or as a frustum of a pyramid, wherein six stacked and detached sub-units are configured to be positioned so that they form a cube and so that first opposing surfaces of the sub-units form an outside of the cube, wherein a collection of cubes, which comprises a plurality of cubes and has outer boundaries, is stacked in the housing such that the outer boundaries of the collection of cubes is positioned adjacent the inner walls of the housing, and wherein the sub-units comprise side walls which mutually support each other force-wise when the collection of cubes is subjected to an external force.

2. The packaging system according to claim 1, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 50% of the total outer surface of the sub-unit.

3. The packaging system according to claim 1, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 90% of the total outer surface of the sub-unit.

4. The packaging system according to claim 1, wherein the side walls taper inwardly at 45 degrees.

5. The packaging system according to claim 1, wherein at least one of the sub-units comprises at least one partition wall, dividing a volume within the at least one of the sub-units into a plurality of volumes.

6. The packaging system according to claim 1, wherein the first opposing surfaces of the sub-units are provided with respective lids.

7. A packaging system comprising a plurality of sub-units and a housing with inner walls, the sub-units having a tapered structure towards a narrow end from a first opposing surface at an end opposite the narrow end, each of the sub-units being shaped as one of, a pyramid or as a frustum of a pyramid, wherein six stacked and detached sub-units are configured to be positioned so that they form a cube and so that first opposing surfaces of the sub-units form an outside of the cube, wherein a collection of cubes comprises a plurality of stacked cubes and has outer boundaries, and wherein the collection of cubes is stacked in the housing such that adjacent cubes in the collection have respective first opposing surfaces that abut each other, and the outer boundaries of the collection of cubes is positioned adjacent the inner walls of the housing and abutting the inner walls of the housing such that a force acting on a sub-unit is transferred to the other five sub-units of the cube and further to sub-units of adjacent cubes and further to the walls of the housing.

8. The packaging system according to claim 7, wherein the sub-units comprise side walls which mutually support each other force-wise when the collection of cubes is subjected to an external force.

9. The packaging system according to claim 7, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 50% of the total outer surface of the sub-unit.

10. The packaging system according to claim 7, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 90% of the total outer surface of the sub-unit.

11. The packaging system according to claim 7, wherein the sub-units comprise sidewalls which taper inwardly at 45 degrees.

12. The packaging system according to claim 7, wherein the first opposing surfaces of the sub-units are provided with respective lids.

13. A packaging system comprising a plurality of sub-units and a housing with inner walls, the sub-units having a tapered structure comprising four sidewalls extending from a first opposing surface towards a narrow end at an end opposite the first opposing surface, each of the sub-units being shaped as one of, a pyramid or as a frustum of a pyramid, wherein six stacked and detached sub-units are configured to be positioned so that they form a cube and so that the first opposing surfaces of the sub-units form an outside of the cube, wherein a collection of cubes, which comprises a plurality of stacked cubes and has outer boundaries, and wherein the collection of cubes is stacked in the housing such that adjacent cubes in the collection have respective first opposing surfaces that abut each other, and the outer boundaries of the collection of cubes is positioned adjacent the inner walls of the housing and abutting the inner walls of the housing such that a force acting on a sub-unit is transferred to the other five sub-units of the cube and further to sub-units of adjacent cubes and further to the walls of the housing.

14. The packaging system according to claim 13, wherein the sidewalls taper at an angle of about 45 degrees.

15. The packaging system according to claim 13, wherein the the sidewalls mutually support each other force-wise when the collection of cubes is subjected to an external force.

16. The packaging system according to claim 13, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 50% of the total outer surface of the sub-unit.

17. The packaging system according to claim 13, wherein a substantial part of an outer surface of each sub-unit mutually supports at least four other sub-units, the substantial part of the outer surface of each sub-unit being more than 90% of the total outer surface of the sub-unit.

18. The packaging system according to claim 13, wherein the sidewalls taper inwardly at 45 degrees.

19. The packaging system according to claim 13, wherein the first opposing surfaces of the sub-units are provided with respective lids.

Description

DESCRIPTION OF THE DIAGRAMS

(1) Embodiments of the present invention will now be described, by way of example only, with reference to the following diagrams wherein:

(2) FIG. 1 shows a packaging system according to prior art

(3) FIG. 2A shows a first embodiment of sub unit

(4) FIG. 2B shows a second embodiment of sub unit

(5) FIG. 2C shows a third embodiment of sub unit having a frustum

(6) FIG. 2D shows the first embodiment of sub unit with a lid

(7) FIG. 2E shows the first embodiment of sub unit with the lid closed

(8) FIG. 3A shows a preassembled collection of a first embodiment of sub unit

(9) FIG. 3B shows a preassembled collection of a second embodiment of sub unit

(10) FIG. 3C shows a preassembled collection of a third embodiment of sub unit having a frustum

(11) FIG. 3D shows a preassembled collection of a first embodiment of sub unit

(12) FIG. 4A shows a partially assembled package unit from a collection of a first embodiment of sub unit with one sub unit removed

(13) FIG. 4B shows a partially assembled package unit from a collection of a third embodiment of sub unit with one sub unit removed and wherein the frusta form an inner volume

(14) FIG. 5 shows a partially assembled package unit having four sub units on each side

(15) FIG. 6 shows a reversed assembly

(16) FIG. 7A shows a preassembled collection of a third embodiment of sub units having a frustum as in FIG. 3C, about to get assembled

(17) FIG. 7B presents how a vertical force applied to a cube with 6 sub units having a frustum gets transferred to horizontal forces on the sub units

(18) FIG. 7C shows 6 cubes arranged to be put inside a housing

(19) FIG. 7D shows 6 cubes arranged inside a housing.

DESCRIPTION OF THE REFERENCE SIGNS

(20) The following reference numbers and signs refer to the drawings:

(21) TABLE-US-00001 10 Packaging system according to prior art 100 Packaging system 110 Inner volume 11, 112 Lost volume or dead space 200 Sub unit 12, 212 Lid 204 Outer surface 20, 300 Body 34, 304 Sidewalls 36, 306 Partition wall 37, 307 End point 38, 308 Frustum, bottom face 40, 310 Enclosed volume 42, 312 Primary volume 44, 314 Secondary volume 46, 316 Primary content 48, 318 Secondary content

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

Principles Forming the Basis of the Invention

(22) FIG. 1 shows a typical packaging system 10 according to prior art, with a detachably attached lid 12 that when attached to a body having sidewalls 34 and a bottom face 38 forms a volume for holding contents 42. In some cases it is preferred to have separated contents in one unified packaging such as yoghurt and muesli. In such cases the body is also provided with a partition wall 36 that divides the enclosed volume 40 into two parts 42, 44.

(23) However, when placing these in a cubic array a lot of lost volume or dead space 11 between the units is present. Also these are not suited to turn on the side as the shape does not lend itself to this.

(24) Central to the present invention is the adaption of sub units to fit together forming a package system having little wasted space 112. Sub units 200 are formed with a tapered structure or body 300 having sidewalls 304 towards a narrow end 307, 308 from a first opposing or outer surface 204 at an end opposite the narrow end. Said sub units assembled with the narrow end inwards of the assembled packaging system. When assembled the first opposing surface forms the outer surface of the packaging system.

Best Modes of Carrying Out the Invention

(25) In a preferred embodiment the sub units 200 are shaped like pyramids having a square lid 212 and a body 300 wherein the body has sidewalls 304 that taper towards an end. The end can be a point 307 like the peak of a pyramid or a frustum 308. The sidewalls 303 taper at an angle of about 45 degrees inwards. This means that four sub units can be placed together forming a periphery and two more perpendicular to these thus forming a packaging system 100.

(26) This packaging system is a cube where the lids 212 form the outer surface. This has the advantage of providing a convenient surface for product or contents identification, no matter which direction the cube is placed on. Moreover the cube itself has very little dead space 112. Also cubes are well known to be stackable having little dead space between each cube.

(27) The sub units can be formed in many ways.

(28) FIG. 2A shows a second embodiment of sub unit in the form of a pyramid having an endpoint 307. The body 300 forms an enclosed volume 310 sealed with a detachable lid 212 holding contents.

(29) FIG. 2B shows a first embodiment of sub unit in the form of a pyramid having a partition wall 306. The body 300 forms an enclosed volume 310 divided into a primary volume 312 and a secondary volume 314, both sealed with a detachable lid 212 holding contents. Preferably the lid seals in both volumes so that when detaching the lid both volumes are uncovered. More preferably the lid is directionally openable in order to uncover one volume at a time.

(30) FIG. 2C shows a third embodiment of sub unit in the form of a pyramid having a frustum 308. The body 300 forms an enclosed volume 310 sealed with a detachable lid 212 holding contents. The frustum provides a convenient foot for placing the sub unit on a flat surface such as a table. For liquid contents it is also easier to recover more of the contents for a sub unit having a frustum and more so if the transition between the sidewalls and the frustum is curved.

(31) The sub units then will have to be assembled into a packaging system. There are at least 3 preferred embodiments for providing sub units for assembling. Some of these are pre assemblies wherein sub units are provided attached edge to edge in the same direction. Thus typically when the pre assembly is laid out all the bodies are facing up ready to be filled with contents and then closed with lids. The edge attachments can be cut to split one pre assembly into several smaller pre assemblies. In a more preferred embodiment the joints are bendably flexible, elastically and/or plastically, so that a pre assembly can be formed into an assembly system while minimizing cuts.

(32) FIG. 3A shows a first embodiment each sub unit is detached and are freely selected to be assembled together into a packaging system. This provides full freedom in selecting different sub systems, lids and/or contents into one packaging system. The selection can be made at the very end of the process just before assembling. Such single units can be obtained by cutting off individual sub units from a roll of many sub units.

(33) FIG. 3B shows a second embodiment wherein sub units are provided on strips or rolls of many sub systems joined together. Preferably the joints or attachments are detachable. On assembling four sub units are cut from the strip to form a ring, and two detached sub units are placed perpendicular to these thus forming a packaging system. As an alternative two strips of three sub units each are placed facing and perpendicularly together and slotted in together to form a packaging system.

(34) FIG. 3C shows a third embodiment wherein all sub units are provided as a pre assembled collection wherein all sub units required to form a complete package system are attached together. In a preferred embodiment for a cubic packaging system the pre assembly comprises a strip of four sub units with further two sub systems wherein these are located on opposite sides of the longitudinal axis of the strip.

(35) FIG. 4A shows a partially assembled package unit from a collection of a first embodiment of sub unit, illustrating how dead space is minimised.

(36) FIG. 4B shows a partially assembled package unit from a collection of a third embodiment of sub unit wherein the frusta form an inner volume 110. This inner volume has many applications.

(37) The inner volume can be used to contain a cooling element in order to maintain a low temperature for instance for perishable goods. In one example one can insert ice or dry ice. The cooling medium is typically a fluid such as water or CO.sub.2 gas will flow along the inner surfaces of the sub units, keeping them cool.

(38) Dry ice is particularly beneficial as the fluid is less affected by gravity and cools also the upper part of the package system well. On the other hand dry ice has a sublimation point of 78.5 C. which for some goods may require some thermal insulation between the dry ice and the sub units to avoid excessive freezing.

(39) When using ice or other cooling media that forms a liquid it is beneficial to make the package system substantially water tight. If the packaging system is formed from a pre assembly the joints forming edges will easily be made water tight. Remaining edges can be made water tight using a sealant or by wrapping an outer layer around the packaging system. This wrapping can beneficially form the lids or labels on the lids on the individual sub units.

(40) Alternatively the inner volume can be used for a heating element.

(41) It is also beneficial to make at least one sub unit easily movable to uncover the inner volume in order to allow refilling cooling or heating medium at point of purchase.

(42) The inner volume offers a position that is protected by the surrounding sub units and is therefore suitable for fragile objects.

(43) When heating sub units on opposing sides can be detached leaving a tunnel like structure through which a fluid such as water or steam can be directed.

(44) Condensation is very efficient in transferring heat to all exposed surfaces. A plurality of such tunnels can be stacked for more efficient heating.

Alternative Embodiments

(45) For the case of the pyramidal embodiment shown in FIG. 2A one may conveniently use a frame for placing the sub unit on a table in order to provide further stability.

(46) While a cubic shape for the packaging system is preferred it is clear that deviations from this are easily achieved. For instance the packaging system can easily be made squat or tall using rectangular sides wherein the sides are rectangles and the top and bottom faces are squares. Alternatively all faces can be rectangular non-squares.

(47) In a further embodiment also higher order Platonic solid geometries can be used such as dodecahedrons. Also other isogonal geometries can be used even with different lids can be used such as truncated icosahedron having pentagonal and hexagonal lids.

(48) While a single sub unit per face is disclosed above there are also alternative embodiments possible. FIG. 5 shows an embodiment wherein a plurality of sub units forms a single face.

(49) Sub units can be filled with contents before sealing with lid and assembling into a packaging system. Alternatively it is possible to start with a pre formed packaging system and inject the contents through an opening and into the body. Preferably the pre formed packaging system comprises soft sidewalls for each sub units that are flat against the lid prior to filling. The side walls can in one embodiment be flexible or elastic and thus increase the volume of the body to accommodate the content. The opening can be provided on the lid or a part of the side wall.

(50) During the filling process one can chose whether or not to have an inner volume, simply by inserting a suitable object inside the packaging system. The sidewalls will expand to enclose the object and secure it.

(51) In one embodiment the packaging system is used for packaging fragile objects in the inner volume and the enclosed volumes of the sub units are filled with a fluid, more preferably a shock absorbing fluid.

(52) In these embodiments much of the air between the sub units can be pressed out.

(53) While the sidewalls could be vulnerable to mechanical damage said sidewalls will not be exposed to the outside. Instead the outer surface of the packaging system will provide the protection. Alternatively the sidewalls can be cured or a more robust material applied to the outside of the sidewalls to improve mechanical strength.

(54) In many applications it is preferred to provide sub units with foil lids or other means for easy removal and thus access to the contents. Such foils can be fragile and easily punctured. It is in these cases possible to locate the foil lid on an inner surface of an assembled packaging system and use a more robust outer surface. This outer surface could optionally be made of the same material as the side walls.

(55) Another preferred embodiment is a packaging system 100 where the substantial part of the outer surface e.g. the substantial part of sidewalls 304 and the lid 212 of each sub unit 200 mutually supports at least one, preferably at least two, most preferably at least four other sub units 200. FIG. 7B shows how a vertical force on one upper sub unit 200, indicated by a vertical open arrow, gets transferred to the remaining 5 sub units of a cube of 6 sub units 200, indicated by solid arrows. If a plurality of such cubes of sub units 200 is arranged inside a housing, such as indicated in FIGS. 7C and 7D, forces, generated from e.g. weight of sub units 200 and applied from above, are ultimately distributed to the walls of this housing. This mutual support, resulting in the sub units 200 being capable of withstanding considerable forces, is a fact if a substantial part of the total outer surface of the sub unit 200 is mutually supported. A substantial part of the total outer surface of the sub unit 200 is preferably intended to be more than 50%, more preferably more than 90% of the total outer surface of the sub unit 200. As is generally understandable, practical details in the design of edges and corners of the sub unit 200 will in many cases result in the fringes of the walls not getting being 100% support from mutual sub units 200. This is of little consequence as a substantial part of the forces are supported.

(56) When stacking together systems of rectangular parallelepipeds, e.g. cubes, into a collection of parallelepipeds, e.g. collection of cubes, the outer boundaries of the collection may be positioned adjacent the inner walls of a housing.

(57) The example housing of FIGS. 7C, 7D may contain any number of rectangular parallelepipeds, e.g. cubes in all three orthogonal axis.

(58) The housing can be made of any material having tensile strength resisting stretching. In one preferred embodiment, the material may be cardboard. In another preferred embodiment the material may be plastic film.

(59) FIG. 6 shows a reversed assembly, which is the assembly of sub units with end points pointing outwards rather than inwards. This can be assembled directly from strips as disclosed earlier, or by reversing the folding of a packaging system disclosed earlier. By assembling from strips, preferably long and continuous strips the packaging of pre assembled systems can be made very compact, and then assembled on demand and on site. Likewise this can be disassembled for reuse and transported in a very compact manner without the problems associated with expanded polystyrene.

(60) The technical effect of this is that volume now is maximized rather than minimized as is the case for non-reversed packaging systems.

(61) In one application, the packaging system 100 contains e.g. a meal. When this meal is consumed, the remaining waste, often occupying more volume than the meal itself, may be collected inside the packaging system 100, taking advantage of the fact that the reversed packaging system encloses a larger volume.

(62) In another application of the reversed assembly, this can be used for lighting devices such as lamps. This can be transported as a packaging system, preferably with the more shock sensitive parts such as bulbs in the inner volume. On unpacking the sub units form the lamp shading.

(63) In a second application this can be used for extra packaging protection known as an alternative to packaging chips or foam peanuts made of expanded polystyrene.

(64) In the case of pre assembled sub units, as strips shown in FIG. 3B or as more complete assembled shown in FIG. 3C the sub units can be attached in many ways. In a first embodiment the sub units are attached by their bodies using the same material as in the bodies, preferably using living joints. This allows for production of continuous strips of sub units. Sub units can then easily be filled with contents and lids then sealing the contents in place before the sub units are cut to length and assembled into a packaging system.

(65) In a second embodiment sub units are attached to each other using the lid, typically a foil. This allows for mix and match of various types of sub units, filling sub units with contents and then sealing the contents and simultaneously connecting said sub units using these lids. In a variation the sealing and connecting stages are separated, allowing freely ordering of sealing and connecting processes.

(66) By these two embodiments, using a separate material for the sub units and the connecting parts between the sub units allows for transforming strips shown in FIG. 3B into more complete pre assemblies shown in FIG. 3C. Hybrid solutions with any combinations of separate subunits and pre-assembled sub units and attachments using lids or separate connecting stages in one packaging system is also possible.

INDUSTRIAL APPLICABILITY

(67) The invention according to the application finds use in compact and robust packaging, transport and unpacking of goods.