PRODUCT PACKAGE AND METHOD OF MANUFACTURING THE SAME AS WELL AS PACKAGE BLANK

Abstract

A product package includes a receiving space (1a), a covering film (7), an inner lining (6) and a body part (2) created out of a single blank. The body part (2) includes walls (2a, 2b, 2c, 8), a bottom (3) and a rim portion (4) as well as a plurality of slots (5) for shaping the receiving space (1a). The rim portion (4) of the body part (2) is a continuous, seamless and planar portion formed out of the same said blank and interconnecting the walls (2a, 2b, 2c, 8) of the body part (2).

Claims

1. A product package comprising a receiving space (1a), a covering film (7), an inner lining (6) and a body part (2) created by folding out of a single blank, the body part (2) comprising walls (2a, 2b, 2c, 8), a bottom (3) and a rim portion (4) as well as a plurality of slots (5) for shaping the receiving space (1a), which rim portion (4) is created out of the same single blank the outer edges of which constitute the outer edges of the rim portion (4) of the product package, characterized in that the rim portion (4) of the body part (2) is a continuous, seamless and planar portion without superimposed material sections, interconnecting the walls (2a, 2b, 2c, 8) of the of the body part (2).

2. A product package as defined in claim 1, characterized in that the inner lining (6) covers the receiving space (1a) and the rim portion (4) of the product package (1).

3. A product package as defined in claim 1, characterized in that a portion of, or all of, the inner lining (6) extends beyond the outer edges of the rim portion (4), the inner lining (6) being separable from the body part (2), in its entirety, by detaching it at this portion of the inner lining (6).

4. A product package as defined in claim 1, characterized in that the covering film (7) of the product package (1) covers the packaged product and is sealed to the inner lining (6), at least over the rim portion (4).

5. A product package as defined in claim 1, characterized in that the body part (2) of the product package (1) is shaped out of a package blank (9a, 9b), and in that the package blank (9a, 9b) comprises cuts by means of which the three-dimensional structure of the body part (2) is adapted to be formed.

6. A product package as defined in claim 1, characterized in that the body part (2) is made of recyclable fiber material, and in that the material is corrugated paperboard, cardboard or some other suitable recyclable fiber material.

7. A product package as defined in claim 1, characterized in that the body part (2) of the product package (1) comprises one or more continuous surfaces for displaying information.

8. A product package as defined in claim 1, characterized in that the walls (2a, 2b and 2c) and the bottom (3) of the body part (2) of the product package (1) comprise a plurality of slots (5), the walls (2a, 2b and 2c), the bottom (3) and the plurality of slots (5) forming the receiving space (1a), together with the inner lining (6).

9. A product package as defined in claim 8, characterized in that the wall portion (8) of the body part (2) is formed, with circumferential portions (8a) nested inside each other and with bridges (8c) therebetween, into a basket-shaped wall portion (8) comprising a plurality of slots (5) and forming the receiving space (1a), together with the bottom (3) and the inner lining (6).

10. A product package as defined in claim 1, characterized in that the body part (2) of the product package (1) comprises more than one bracket member (11) to keep product packages (1), when nested, spaced apart.

11. A product package blank comprising a sheet-like structure made of recyclable fiber material and having a bottom portion (3a), a wall portion (2y) and a rim portion (4y) for a bottom (3), walls (2a, 2b, 2c, 8) and a rim portion (4) of a product package (1) to be created by folding out of the single package blank (9a, 9b), which rim portion (4) comprises outer edges which constitute the outer edges of the rim portion (4) of the folded product package, characterized in that the rim portion (4y) of the package blank (9a, 9b) is a continuous, seamless and planar entity, and adapted to act, substantially as such, as the rim portion (4) without superimposed material sections of the finished product package created by folding.

12. A method of manufacturing a folded product package, the product package (1) comprising a receiving space (1a), a covering film (7), an inner lining (6) and a body part (2) created out of a single blank, the body part (2) comprising walls (2a, 2b, 2c, 8), a bottom (3) and a rim portion (4) the outer edges of which constitute the outer edges of the rim portion (4) of the product package, the method comprising making a plurality of slots (5) in the body part (2) for shaping the receiving space (1a), characterized in that a continuous, seamless and planar rim portion (4) is formed without superimposed material sections on the body part (2) out of the said single blank.

13. A method as defined in claim 12, characterized in that the inner lining (6) is attached to the surface of the frame of the receiving space (1a) and onto the rim portion (4) to act as an even and continuous attachment surface for the covering film (7) of the product package.

14. A method as defined in claim 12 or 13, characterized in that the covering film (7) of the product package (1) is attached to the portion of the inner lining (6) extending over the planar rim portion (4) of the product package (1) by heat-sealing or by some other suitable attachment method.

Description

[0017] In the following, the invention will be explained in more detail, by means of two exemplifying embodiments, with reference to the accompanying drawings wherein

[0018] FIG. 1 is an oblique lateral and top view of a prior-art product package,

[0019] FIG. 1a is a simplified, not-to-scale top view of a discontinuous corner of the prior-art product package of FIG. 1,

[0020] FIG. 1b is a simplified, not-to-scale, partially sectional lateral view of the discontinuous corner and an untight lid connecting solution of the prior-art product package of FIG. 1,

[0021] FIG. 2a is a direct top view of a product package according to the invention,

[0022] FIG. 2b is a not-to-scale lateral view of a side wall of the product package of FIG. 2a, after putting into shape,

[0023] FIG. 2c is an oblique, not-to-scale lateral and top view of the product package of FIGS. 2a and 2b, after putting into shape,

[0024] FIG. 2d is a direct top view of a package blank for the product package of FIG. 2,

[0025] FIG. 3a is a direct top view of another package blank according to the invention, before forming it into a product package,

[0026] FIG. 3b is a not-to-scale lateral view of a side wall of the product package of FIG. 3a, after putting into shape,

[0027] FIG. 4 is a sectional, simplified and not-to-scale lateral view of a portion of a product package according to the invention, provided with a skin-film,

[0028] FIG. 5k is a sectional, simplified and not-to-scale lateral view of the product package of FIG. 4, provided with a bracket member,

[0029] FIG. 6k is an oblique lateral and top view of the product package of FIG. 5k, and

[0030] FIG. 7k is a direct top view of a package blank for the product package of FIG. 5k.

[0031] FIGS. 1, 1a and 1b show a product package according to the invention, Pa (Prior Art: EP 2441696 A1). For illustrative purposes, some of the figures exaggerate the thickness of the manufacturing material and of the films.

[0032] FIG. 1 is an oblique lateral and top view of a prior-art product package Pa. The product package Pa is folded out of a single cardboard blank. The product package Pa consists of a body part 2 and an inner lining 6. Correspondingly, the body part 2 consists of a bottom 3, two lateral walls and two end walls as well as of a substantially planar rim portion 4 extending laterally outwards from the upper edge of the lateral and end walls. The body part 2 is made of a suitable recyclable fiber material, such as cardboard. The product package Pa maintains its intended shape by means of thin foodstuff plastic used as the inner lining 6 and laminated to the body part 2, resulting in a weak and unstable structure due, for example, to the fact that the rim portion of the top is not seamless and continuous.

[0033] FIG. 1a is simplified and not-to-scale top view of a discontinuous corner of the product package Pa of FIG. 1. The above-mentioned structure solely supported by the inner lining causes that, in the assembling step of the product package Pa, where the inner lining 6 is attached to the body part 2 and to the planar rim portion 4, small slots are left in the corner seams 5 of the planar rim portion 4, making the planar rim portion 4 discontinuous.

[0034] FIG. 1b is a simplified, partially sectional and not-to-scale lateral view of the discontinuous corner and an untight lid connecting solution of the product package Pa of FIG. 1. As there is a slot in the corner seam 5 of the planar rim portion 4 of the product package Pa, the foodstuff plastic attached over the planar rim portion 4 and used for the inner lining 6 tends to deform towards the slot, leaving, in the surface of the planar rim portion, a groove 6a parallel to the corner seam 5. Later, the product package Pa will be filled with a foodstuff product and a covering film 7 will be sealed to the portion of the inner lining 6 attached over the planar rim portion 4 of the product package Pa by heat-sealing, for example. The above-mentioned grooves 6a of the inner lining 6, formed at the corner seams 5, leave an air channel between the inner lining 6 and the covering film 7, and thus, also in the receiving space 1a of the product package 1, making the product package non-airtight or possibly even non-watertight. Product packages having this structure do not allow a packaging gas, for example, to be used for enhancing the shelf-life of the food product, and are not suited as skin-packages.

[0035] FIGS. 2a, 2b and 2c show a product package 1 according to the invention. FIG. 2d show a package blank 9a for forming the body part 2 of the product package of FIGS. 2a, 2b and 2c.

[0036] FIG. 2a is a direct top view of a product package 1 according to the invention. Preferably, the product package 1 according to the invention is a foodstuff package intended for cold cuts for example. The empty product package 1 consists of a body part 2 and an inner lining 6, such as a foodstuff foil. Correspondingly, the body part 2 consists of nine bottom portions 3a, two lateral walls 2a and two end walls 2b, as well as of intermediate walls 2c extending therebetween, in the corners of the product package 1, and, additionally, of a continuous seamless rim portion 4 extending laterally outwards from the upper edge of the lateral, intermediate and end walls 2a, 2b and forming a substantially planar rim portion 4 of the product package 1. The bottom portions 3a form a bottom 3.

[0037] The body part 2 is made of a suitable recyclable fiber material. Preferably, the material is corrugated paperboard, cardboard or any other appropriate recyclable fiber material, for example. The inner lining 6 consists of foodstuff plastic and is, after use, easily separable from the body part 2, allowing the body part 2 and the inner lining 6 to be sorted for recycling. The body part 2 is manufactured by shaping and folding it out of a package blank 9a, by a machine, for example.

[0038] The continuous and seamless planar rim portion 4 of the body part 2 of product package 1 is a part, a common component, holding the walls (2a, 2b, 2c) together and making the structure sturdy. The lateral walls 2a, end walls 2b and intermediate walls 2c, which are folded at folding lines (4e) and from which the bottom portions 3a are created by folding along folding lines 3e, are connected to the rim portion (4).

[0039] The lateral walls 2a, end walls 2b and intermediate walls 2c, together with the bottom portions 3a, form a space for the product to be packaged, as the package blank 9a is folded, along the folding lines 4e and 3e, into a frame of the receiving space 1a for a food portion. The discontinuous structure of the frame of the receiving space 1a, also comprising a plurality of slots 5, results in savings in material costs because the body structure 2 involves neither sections with superimposed material nor material loss due to cutting, and, in addition, the plurality of slots 5 increase the volume of the receiving space 1a. The frame of the receiving space 1a provided with the inner lining 6 constitutes the actual sturdy receiving space 1a which reliably maintains its shape and tightness, also thanks to the inner lining 6.

[0040] The manufacturing method provides a continuous and even as well as seamless planar rim portion 4 for the product package 1, allowing the covering film 7 to be attached to the product package in an airtight manner. In skin-packages, air is sucked out of the package and the airtightness of the package ensures that a vacuum is maintained in the package 1.

[0041] FIG. 2b is a simplified and not-to-scale lateral view of one of the ends of the product package 1 of FIG. 2a, showing an end wall 2b and two intermediate walls 2c as well as a rim portion 4 and an inner lining 6 extending, on each side of the rim portion 4, beyond the rim portion 4.

[0042] The inner lining 6 is attached over the frame and the planar rim portion 4 of the receiving space 1a of the product package 1 by a machine, after folding and assembling it into shape. The inner lining 6 attaches to the body part 2 and is adapted to make the package airtight, together with the covering film 7. The inner lining 6 is attached, for example, by causing an under-pressure under the body part 2. The inner lining 6, having glue on its lower face, is adapted to be sucked, by the under-pressure, tightly against the inner face of the body part 2. This is done by sucking air, by means of the under-pressure, from between the body part 2 and the inner lining 6 located inside it, through the body part 2 and the apertures 5. The over-pressure prevailing above the package contributes to the attachment. The above-described method results in a tight attachment of the inner lining 6 to the inner face of the frame of the receiving space 1a of the body part 2 and over the rim portion 4. In addition, the inner lining 6 extends beyond the rim portion 4, allowing the body part 2 and the inner lining 6 to be easily separated from package, after it has been used, for sorted recycling.

[0043] At the rim portion 4, the inner lining 6 is evenly set, not allowing the inner lining 6 to form any grooves or projections which are detrimental to the tightness of the product package 1. Later, the product package 1 will be filled with a foodstuff product and the covering film 7 will be sealed to the portion of the inner lining 6 attached over the continuous seamless planar rim portion 4 of the product package 1. The covering film 7 of the product package 1 is adapted to be sealed to the inner lining 6 by heat-sealing, for example, or by some other suitable sealing method. At the above-mentioned seamless planar rim portion 4, the covering film 7 is tightly set against the inner lining 6 to make sure that the receiving space 1a of the product package 1 is watertight and airtight. This tightness ensures that the product package 1 according to the invention maintains a vacuum in skin-package applications, for example, or that a packaging gas, for example, can be used in the product package 1 to enhance the shelf-life of the foodstuff product.

[0044] FIG. 2d is a top view of a preferable package blank 9a according to the invention before shaping it into the product package 1. Appropriate cuts and folding lines 3e and 4e are made in the product blank 9a, at folding points, to facilitate machine-folding of the package blank 9a into the product package 1. The folding lines 3e and 4e are made by creasing, for example.

[0045] Preferably, the product blank 9a comprises a sheet-like structure made of recyclable fiber material and having bottom portions 3a, wall portions 2y and a rim portion 4y, separated by the folding lines 3e and 4e, for a bottom 3, walls 2a, 2b, 2c and a rim portion 4 of the product package 1 to be created out of the product blank by folding. In a preferred solution, the bottom portions 3a are separated, along the folding lines 3e, from the wall portions 2y forming the walls (2a, 2b, 2c).

[0046] FIG. 3a is a top view of another flat package blank 9b according to the invention before putting it into the shape of the product package 1. This package blank 9b has a planar and seamless rim portion 4y and a planar continuous bottom portion 3a. A wall portion 8y, consisting of continuous circumferential portions 8a inside each other, is located between the bottom portion 3a and the rim portion 4y. The circumferential portions 8a are separated from each other by systematically alternating circumferential cut seams 8b and bridges 8c. The rim portion 4y and the bottom portion 3a are similarly separated from the circumferential portions 8a. Thus, the circumferential portions 8a are connected to the adjacent circumferential portions 8a by the bridges 8c, this configuration allowing a flexible basket-shaped structure and a receiving space 1a to be later created for the product to be packaged.

[0047] FIG. 3b is a lateral view of the body part 2 of the product package 1 created out of the product blank 9b of FIG. 3a, after putting into shape. The body part 2 has a bottom 3, a rim portion 4 and a wall 8. The wall 8 comprises continuous circumferential portions 8a, bridges 8c interconnecting the circumferential portions 8a, and a plurality of slots 5 formed by the cut seams 8b. Once put into shape, the product package 1 forms a frame for the receiving space 1a since the circumferential portions 8a, cut seams 8b and bridges 8c of the wall 8, as a result of the systematic alternation, form a basket-shaped structure. When an inner lining 6 is laid on the basket-shaped body part 2 created in this way, the product package 1 becomes rigid in construction and the receiving space 1 for the product to be packaged is formed.

[0048] FIG. 4 is a sectional, simplified and not-to-scale lateral view of a product package 1 according to the invention, provided with a covering film 7. The figure illustrates how the receiving space 1a and the rim portion 4 of the product package 1 are covered by an inner lining 6 and how the product package 1 containing a ready foodstuff product 10 is closed, at the even and planar rim portion 4, by the covering film 7 attached to the inner lining 6. The portions of the covering film 7 and the inner lining 6 extending outside the rim portion 4 of the skin product package of FIG. 4 are not attached to each other, allowing the product package 1 to be effortlessly opened. After use, the inner lining 6 is easily separable from the body part 2, by pulling at the portion of the inner lining 6 located outside the rim portion 4.

[0049] FIG. 5k is a sectional, simplified and not-to-scale lateral view of the product package of FIG. 4, provided with a bracket member 11. At the bracket member 11, the fold between the rim portion 4 and the intermediate wall 2c bends in a different direction outside the bracket member 11.

[0050] FIG. 6k is an oblique lateral and top view of a corner of the product package 1 where the bracket member 11 is pushed out into shape.

[0051] FIG. 7k is a direct top view of a package blank 9a for the product package 1, having cuts 11a and creases 11b made between the wall portions 2y and the rim portion 4y for the purpose of forming the bracket member 11. However, the figure does not show how the horizontal part of the bracket member 11 is substantially wider than the vertical part thereof.

[0052] Preferably, a vast potential information-displaying surface, such as a pressing or printing surface, is formed on the product package 1, on both faces of the bottom and the rim portion, and, in certain applications, also on the faces of the wall portions. The displaying surfaces provided on both sides allow pressing/printing to be used, inter alia, for brand identification and product information displaying.

[0053] It will be appreciated by a person skilled in the art that the invention is not solely restricted to examples above but may vary within the scope of the accompanying claims. Thus, some structural solutions may differ from the above.

[0054] It will also be appreciated by the person skilled in the art that the product packages may differ in shape from the above. The simplest and most common shape of the body part of the product package is a rectangle, for example. However, the package can have some other than a box-like rectangular shape. As an example, this shape can be polygonal, or also round or oval, depending on the folding lines of the finished blank. When the shape is not a quadrilateral, the number of the walls may also differ from the above, and, therefore, separate lateral or end walls may not exist. It is also possible to make the angle between the bottom and the walls, for example, less acute by an additional fold of the walls, near the bottom. Further, the shape can also be asymmetrical.

[0055] It will also be appreciated by the person skilled in the art that the product packages may consist of some other material than recyclable fiber material. In this case, the body part of the product package can be made of any other foldable material, such as corrugated paperboard. The body part of the product package can be made of different grades of board, cardboard or paper, or, also of woven material, or of combinations of different materials.