PACKAGE

Abstract: Package (1) for receiving agricultural or industrial products to be packed comprising a bottom part (2) and a cover part (3), whereby the cover part (3) is provided with an enlarged side surface.

Description: PACKAGE TECHNICAL FIELD The present invention relates to a package of the kind set forth in the preamble of claim 1 and to a method of making such a package. BACKGROUND ART Such packages, as known from US-A-3,730,420, are used inter alia for transporting and packing agricultural products such as eggs, vegetables, fruits and also industrial products such as household appliances, medical equipment, tools, lamps, etc. These packages have to be appealing to the users and customers and therefore an important aspect of their construction is the possibility to provide text and images on the outside of the package. Traditionally, such packages comprise a bottom part making up about half of the height of the complete package, while the cover part makes up for the other part of the height. The side surface of the package is there- fore split in an upper and a lower part. The bottom part is provided with a movable flap defining projections for catching into holes provided in the upper side surface of the cover. Such a conventional package has two significant disadvantages. First, the side surface is divided whereby the lower part is usually not suited for providing any kind of text or images onto, because the lower part is shaped such as to receive the articles to be packed, and therefore it cannot be planar. The upper part of the side surface (front surface) belonging to the cover part is usually provided with holes for allowing the projections of the flexible flap to protrude into. Since these packages are usually stacked in the sales rack, it is the unusable front surface only that is visible to the customer. Second, the locking construction with the flap is not particularly easy to use. The user has to push back the flexible flap before opening or closing the package. This is especially problematic when two packages are connected at their sides so that the user has to push back two flaps simultaneously for opening or closing the packages. DISCLOSURE OF THE INVENTION It is the object of the present invention to provide a package of the kind referred to above, which allows a major part of the side surface of the package to be provided with text or images. This object is achieved by means of the features set forth in the characterizing clause of claim 1. The package according to the invention has a front surface on the cover part which overlaps the side surface of the bottom part. In this way the front surface of the cover part can cover the whole side surface of the package, thus allowing for an increased surface to provide text or images. Another object of the invention is to provide a package that is easier to open and close. The front surface of the cover part can be used to hold the cover part in its closed position without the need for a flexible flap as used in the prior art packages. For this purpose the package can be constructed in such a way that the cover part will come into frictional contact with the bottom part at the end of the closing and at the beginning of the opening movement. For the same purpose also projections can be provided on the side surface of the bottom part. The corresponding holes for receiving the projections will then be located at the lower part of the front surface of the cover part, and therefore they will not be at the most noticeable part of the side of the package so that they do not disturb. The front surface of the cover part may extend completely down to the bottom part of the package so that it can rest on the surface carrying the package in order to improve the stability of the package. The cover part may be provided with a planar top surface that defines projections to hold a package stacked onto it in place. According to a preferred embodiment the package is produced by pulp moulding. The packages are moulded and dried with the cover part in its open position. The freshly moulded product is very weak, and it is necessary for the lid to be supported. For this purpose an edge defined by the planar top surface and the front surface of the cover part can be used. Further advantages and embodiments of the package according to the present invention and the method for producing said package are set forth in the independent claims. BRIEF DESCRIPTION OF THE DRAWINGS In the following detailed portion of the present description, the invention will be ex- plained in more detail with reference to the exemplary embodiments of the package according to the invention as shown in the drawings, in which Figure 1 is a perspective view as seen from above of two packages detachably connected at their sides according to the invention, Figure 2 is a side view of the package with the cover part in its closed position, Figure 3 is another side view of the package with the cover part in its closed position, Figure 4 is the same side view as Figure 3, but with the cover part in its open position, Figure 5 is a perspective view as seen from above of a prior art package, Figure 6 is a perspective view as seen from above of two packages detachably connected at their sides according to the invention of a second embodiment, Figure 7 is a side view of the package with the cover part in its closed position of a second embodiment, Figure 8 is another side view of the package with the cover part in its closed position of a second embodiment, and Figure 9 is the same side view as Figure 8, but with the cover part in its open position. DESCRIPTION OF THE PREFERRED EMBODIMENT Fig. 1 shows a pair of packages 1 detachable connected and in their open position. A package consists of a bottom part 2 and a cover part 3. The bottom part is pref- erably rectangularly shaped and defines a plurality of upwardly open pockets 17 for receiving products to be packed. The bottom part further defines side surfaces 5 to 8. These side surfaces 5 to 8 define the upper edges of the bottom part 2, and they are non-planar in order to define the above-mentioned pockets. The package is provided with a cover part 3 that can take an open and a closed position. The cover part 3 consists of at least a planar top surface 10 and a front surface 4. The front surface 4 and the top surface 10 meet at an angle to form a supporting edge 13 for the cover part to rest on in its open position. The bottom part and the cover part are connected by a hinge 9 located at the upper edge of one of the side surfaces 5 of the bottom part 2 and at the cover part 3 opposite to the side surface 4. Fig. 2 shows a side view with the cover part 3 in its closed position. The front surface 4 extends from the planar top surface 10 down. According to a preferred embodiment, the front surface 4 of the cover extends substantially parallel to and adjacent to the side surface 5. This allows the front surface 4 to be supported by the side surface 5. In the exemplary embodiment, the front surface 4 of the cover part is provided with two holes 14 for receiving projections 15 of the bottom part in order to lock the cover part 3. According to a preferred embodiment, the front surface 4 extends fully down to the bottom of the package so that it may serve as a support for the cover part and allows a more stable construction of the package. The projections 15 and the corresponding holes 14 are located at the lower part of the package so that they least disturb the front surface 4. In another preferred em- bodiment (not shown), the inner side of the front surface 4 is provided with ridges that hook to the projections 15 so that the front side 4 is without disturbing holes. Further, Fig. 3 illustrates a side view from which it can be seen that the cover part is provided with side surfaces 18, 19 extending down to the upper edges of the corresponding side surfaces 6, 8 of the bottom part. The side surfaces 18, 19 of the cover part are designed such as to form a preferably triangular ventilation opening 20. In order to be able to remove a package from a mould in which it could be made, it is necessary for the side surfaces to define a certain minimum angle α with the vertical, i.e. with the direction of removal from the mould. This angle α thus poses certain restrictions on the freedom of construction. With the front surface 4 of the cover part 3 parallel and adjacent to the side surface 7 of the bottom part 2, it is neces- sary for the hinge to be positioned above half the height of the closed package. The height of the side surface 7 of the bottom part 2 can extend above the height of the hinge 9 in order to increase the closing pressure. The side surface 5 of the bottom part extends higher than the other side sections of the bottom part 2 in order to allow the hinge 9 to be positioned higher. Another feature is that the hinge 9 can be connected to the cover part 3 practically at the edge of the planar top surface 10. This allows the planar top surface 10 to be larger and allowing more space for text and images. Fig. 4 shows the package from the same side as Fig. 3, but with the cover part in its open position. The cover part 3 rests on the edge 13. This support is necessary for a pulp moulded package for providing support for transporting and drying the freshly moulded package. The bottom part 2 may be provided with pillow posts that support the planar top surface 10 in order to improve the stability of the package. In the open position, the front surface 4 of the cover part 3 again forms the minimum angle α with the vertical. If, as in the exemplary embodiment, the front surface 4 is to be parallel to the side surface 5 in the closed position, then the top surface 10 has to form an angle of at least 2α with the horizontal. This can be achieved by locating the hinge 9 at a height corresponding to at least B sin 2α, in which B is the distance from the hinge 9 to the supporting point of the edge 13. Figs. 6 to 9 show a second embodiment in which the front surface 4 comprises two rigidly connected planar surfaces 22 and 24. The surfaces 22 and 24 form an obtuse angle with one another. According to a further embodiment, the tip 11 of the side surface 4 is in physical contact with the upper edge 16 of the side surface 7 during the last part of the clos- ing movement and the first part of the opening movement, respectively. The cover part 3 can thus be locked to the bottom part 4 without the need for projections and holes. The strength of this physical contact may be varied by: a) adjusting the height of the side surface 7, b) adjusting the distance from the hinge 9 to the inside surface of the cover surface 4 relative to the distance between the upper edge 16 and the hinge 9. These two possibilities for adjustment influence the pressure during the closing process as well as the compressive stress in the closed position. The top surface 10 can be provided with projections 12 that hold a package stacked on the top surface 10 in place. The package according to the preferred embodiment is an egg-carton. The shown embodiment is a twin-pack of two 6-packs. The egg-carton can also be a 4-pack, a 10-pack or a 12-pack or other common format. The packages may be produced by moulding pulp mass. In a preferred embodiment, the packages are preferably produced in sets of two packages that are connected detachably at their sides. In order to produce such a package a vacuum- permeable mould surface is provided, followed by aspirating a fibre-pulp mass onto the mould. The freshly moulded packages of wet pulp have a low stability since the wet pulp is very weak. In order to be able to transport the packages from the mould to the drying oven it is therefore necessary that both the bottom part and the cover part have a supporting surface to carry them. This support is naturally available for the bottom part, however for the cover part member such support must be provided. In the present invention this is provided by the edge 13 which is formed by the planar top surface 10 meeting the side surface 4 at an angle. The package may be after-pressed in order to provide a more smooth and appealing outer surface. Fig. 5 shows a prior art package with flexible flaps attached to the side surface of the bottom part opposite to the hinge. These flaps pose difficulties to the user when opening and closing the package. LIST OF PARTS 1 package 2 bottom part 3 cover part 4 front surface 5 side surface at hinge 6 side surface 7 side surface opposite to hinge 8 side surface 9 hinge 10 top surface 11 tip of front surface 12 protrusions at top surface 13 supporting edge 14 holes in front surface 15 projections 16 upper edge of side surface 7 17 pockets 18 side surface 19 side surface 20 ventilation opening 22 planar surface 24 planar surface

Claims: CLAIMS 1. Package (1) for receiving one or more agricultural or industrial products to be packed, i.e. eggs, vegetables, household appliances, comprising: - a bottom part (2) defining non-planar side surfaces (5,6,7,8) so as to match at least partially the outer contours of the product or products to be packed, - a cover part (3) defining at least a top surface (10) and a substantially planar front surface (4), - the bottom part (2) being connected to the cover part (3) by a hinge (9) so as to allow the cover part (3) to move between an open position and a closed position, characterized in that: the front surface (4) of the cover part (3) overlaps the non-planar side surface (7) of the bottom part (2) opposite to the hinge (9) when the cover part (3) is in its closed position. 2. Package according to claim ^characterized in that the overlapping part of the front surface (4) is substantially parallel and adjacent to the side surface (7) of the bottom part (2) when the cover part (3) is in its closed position. 3. Package according to claims 1 or 2, characterized in that the front surface (4) overlaps a substantial part of the height of the side surface (7) of the base member. 4. Package according to any of the claims 1 to3, characterized in that the front surface (4) overlaps a substantial part of the length of the side surface (7) of the base member. 5. Package according to any of the claims 1 to4, characterized in that the surface (4) of the cover part extends down to the bottom of the package so that it may rest on the surface carrying the package (1). 6. Package according to any of the claims 1 to5, characterized in that the front surface (4) of the cover part (3) is formed by an upper planar surface (22) and a lower planar surface (24) which are rigidly connected from an obtuse angle with one another. 7. Package according to any of the claims 1 to 6, characterized in that the front surface (4) is in physical contact with the side surface (7) of the base member during the last part of the closing movement and the first part of the opening movement of the cover part, thereby allowing the cover part (3) to be held in the closed position. 8. Package according to any of the claims 1 to 7, characterized in that the cover part defines a planar top surface (10). 9. Package according to claim 8, cha racte rized in that the planar top surface (10) defines projections (12) that can receive and hold the bottom part (2) of a package (1) stacked on it. 10. Package according to any the claims 1 to 9, characterized in that the top surface (10) and the front surface (4) meet at an angle thus forming a supporting edge (13) for the cover part to rest on in its fully open position. 11. Package according to any of the claims 1 to 10, characterized in that the cover part defines side surfaces (18,19) extending down towards the bottom parts side surfaces (6,8) when the cover part (3) is in its closed position. 12. Package according to any of the claims 1 to 11, characterized in that the side surface (7) of the bottom part (2) defines, preferably at the lower part of the bottom part, one or more projections (15) for hooking to one or more ridges defined by the front surface (4) of the cover part (3), thereby releasably locking the cover part. 13. Package according to any of the claims 1-12, c h a r a c t e r i z e d in that the surfaces of the package (1) form at least a certain minimum angle (α) with the vertical, i.e. the direction of ejection from the mould, in order to allow such a package (1) to be removed from a mould in which it could be produced. 14. Package according to claim 13, characterized in that the hinge (9) is located at a height (Hminp) sufficient to allow the tip (11) of the front surface (4) to pass the upper edge (16) of the side surface (5) opposite to the hinge (9) . 15. Package according to claim 13 or 14, characterized in that the hinge is located at a height (Hminm) sufficient enough to allow the front surface (4) to form said minimum angle ( ) with the vertical when the cover part (3) is in the completely open position. 16. Package according to any of the claims 1 to15, characterized in that the height of the side surface (5) to which the cover part (3) is connected by the hinge (9) is so big that it creates a compressive stress between the side surface (7) and the front surface (4) when the cover part (3) is in the closed position. 17. Package according to any of the claims 1 to 16, characterized in that the base part (2) defines one or more upwardly open pockets (17) for receiving a product to be packed. 18. Twin package (1,1) comprising two packages (1) according to any of the claims 1 to 17 detachably connected at their sides. 19. Package according to any of the claims 1 to 18, characterized in that it is an egg-carton. 20. Package according to any of the claims 1 to 19, characterized in that the package (1) is a moulded product. 21. Package according to any of the claims 1 to 20, characterized in that the package (1) is moulded as one piece. 22. Package according to any of the claims 1 to21, characterized in that the package (1 ) is made of moulded pulp. 23. Package according to any of the claims 1 to21, characterized in that the package (1) is made of a polymer. 24. Method of producing a package (1) as defined in claim 22 of moulded pulp comprising the steps of: - providing a mould, - aspirating fibre-pulp mass onto a vacuum-permeable mould surface, - removing the moulded body from the mould, - drying the moulded body, characterized in that the package (1) is moulded and dried with the cover part (3) in the open position whereby the edge (11) is used to support the cover part. 25. Method according to claim 24, in which two or more packages (1) are moulded simultaneously in a single mould. 26. Method according to claim 25, in which said two packages (1) are moulded such that they are detachably connected.

Inventors: STEFFANN LOUIS, STEFFANN, LOUIS
Applicants: HARTMANN AS BRDR, STEFFANN LOUIS, BROEDRENE HARTMANN A/S, STEFFANN, LOUIS
Application year: 1999
Main classification: B65D85
IPC codes: B65D85