Carrying handle and packaging

Abstract

The invention relates to a carrying handle for a packaging, the carrying handle being formed from a paper sheet (1) or comprising a paper sheet (1), at least two spaced-apart incisions (2) being provided in the paper sheet (1), with the result that a handle part (3) is formed from that region of the paper sheet (1) which is located between the incisions (2), and a round, in particular a circular, cut-out (5) adjoining each of the ends (4) of the incisions (2). The invention also relates to a packaging which comprises a carrying handle of this type.

Description

[0001] Carrying handle and packaging

[0002] The present invention relates to a carrying handle and packaging comprising a carrying handle. In particular, the invention relates, among other things, to handles for industrial paper carrier bags or other containers.

[0003] In current technology, handles for industrial paper carrier bags are typically made from a non-woven material. Such handles usually consist of a multi-layered combination of materials, such as the following layer arrangement: paper-polyethylene (PE)-polypropylene (PP)-polyethylene (PE)-paper.

[0004] This combination typically provides sufficient strength and durability for the handles, but has significant drawbacks regarding recyclability. In particular, the individual handle materials are difficult to separate from each other or from other packaging materials, which complicates the recycling process and reduces its efficiency. This constitutes a significant disadvantage of the current state of the art.

[0005] Furthermore, the production of these handles requires complex manufacturing processes and the use of multiple materials, which increases production costs and further impairs sustainability. Simpler or more easily recyclable materials, on the other hand, typically lack sufficient mechanical stability to meet the demands placed on carrying handles.

[0006] The present invention aims in particular to overcome the aforementioned disadvantages. Specifically, it seeks to at least partially resolve the conflict between required strength and recyclability. Therefore, the invention is intended to provide a recyclable handle structure for industrial paper carrier bags. This structure should preferably be easy to manufacture, exhibit high strength and durability, and simultaneously minimize environmental impact. It is particularly advantageous if the handle structure is made from a single material.

[0007] Within the scope of the present invention, it was surprisingly discovered that this conflict of objectives can be resolved at least partially by providing a carrying handle made of paper or a paper-like material.

[0008] Such a paper-based carrying handle consists primarily of a single layer of material made entirely of paper. This single-layer construction allows for simple and efficient recycling, as the separation of different materials is unnecessary.

[0009] The paper used can be bonded, for example, with a starch adhesive to a container or other object that is also made of paper or contains paper, thus creating packaging with a carrying handle. In particular, the use of a starch adhesive for bonding can provide an environmentally friendly and cost-effective solution.

[0010] Preferably, the carrying handle has a special design or pattern which has surprisingly been found to drastically increase its mechanical strength. In particular, the pattern forms a grip section that can be held by hand, for example, to enable the carrying handle to be used as intended.

[0011] In one embodiment, the cutting pattern consists of at least two incisions running along a sheet of paper, with the handle part being formed by that area of ​​the paper sheet which is located between the two incisions.

[0012] Advantageously, the incisions are spaced apart from each other, or they do not overlap or cross each other.

[0013] Typically, each incision has two ends. Advantageously, a material recess is arranged at each end of the incisions. The material recess can have a round, particularly a circular, shape.

[0014] Advantageously, both ends of each cut lie within the sheet of paper.

[0015] The incisions may be straight and essentially parallel to each other. Alternatively, the incisions may have other shapes, for example, they may be curved or arc-shaped in some other way. Even in this case, the incisions may still be essentially parallel to each other, but they may also have other relative arrangements. For example, the course of the incisions may be mirrored along a mirror axis lying on the sheet of paper.

[0016] Surprisingly, the combination of the incision with the material cutouts results in a particularly stable supporting structure, whereby the cutouts in particular prevent the paper sheet from tearing.

[0017] It is advantageous for the paper sheet to possess a certain degree of mechanical stability to better withstand the stresses of carrying. Therefore, the paper sheet material is advantageously sufficiently stretchable and / or tear-resistant. Optionally, the paper sheet is formed from a flat, particularly rectangular or square, piece of paper with a continuous, uniform surface free of any predefined folds or creases. The continuity of the paper sheet is interrupted, in particular, by two incisions, as already described.

[0018] The carrying handle can be attached to a container or other packaging material, in particular glued, to form a portable package.

[0019] The packaging material may also be made of paper, for example kraft paper, at least in the area where it is attached to the carrying handle. In this case, the carrying handle may be attached to the packaging material with a starch adhesive, for example.

[0020] Within the scope of this disclosure, the following terms are used, which advantageously have the following meanings:

[0021] The term "round" can refer to any geometric shape characterized by continuous curvature and lacking any corners or edges. Specifically, "round" denotes a closed, or at least substantially closed, curve. A circle is a typical example of a round shape where all points are equidistant from the center. In this case, the shape can also be described as "circular." However, within the scope of this disclosure, the definition of "round" also includes elliptical shapes and other curved contours, provided they lack sharp corners or edges and retain the fundamental property of continuous curvature.

[0022] The term "essentially closed curve" also includes curves that are not completely closed, in particular if they have a central angle of at least 340°, and especially at least 350°.

[0023] "Incisions" are, in particular, cuts in a material, such as a sheet of paper, that separate or divide the material without removing any part or a substantial portion of it. The original continuity of the material is therefore not interrupted by the incisions. In other words, the material can be separated along the incisions but otherwise remains intact, resulting in abutting pieces of material.

[0024] Each cut has a specific length, defined in particular by the distance between its two ends. The end of a cut also forms the transition to a recess.

[0025] The "distance" between two cuts refers specifically to the perpendicular distance between two parallel cuts. If the cuts are not parallel to each other, the "distance" refers specifically to the smallest perpendicular distance between the cuts.

[0026] In contrast to a "cut," the term "recess" specifically refers to an area of ​​the material or sheet of paper where a portion of the material is or has been removed. A recess can be created, for example, by punching or cutting out this portion.

[0027] A carrying handle for packaging is disclosed, wherein the carrying handle is formed from or comprises a sheet of paper, wherein the sheet of paper has at least two spaced-apart incisions.

[0028] If necessary, the area of ​​the paper sheet located between the incisions is designed to form a handle.

[0029] If necessary, a round, in particular a circular, recess is provided at the ends of each incision.

[0030] If necessary, the cuts are designed to be straight and / or curved.

[0031] If necessary, the incisions may be parallel to each other. If necessary, the incisions may be mirrored along an axis lying on the paper sheet.

[0032] If necessary, the ends of the cuts are designed to open tangentially or radially into the respective recess.

[0033] If necessary, the length of the incisions is intended to be between 100 mm and 150 mm, in particular between 110 mm and 120 mm.

[0034] If necessary, the normal distance between the incisions is intended to be between 20 mm and 50 mm, in particular between 30 mm and 40 mm.

[0035] If necessary, the diameter of the recesses is to be between 3 mm and 8 mm, in particular between 4 mm and 6 mm.

[0036] If necessary, the paper sheet is made of kraft paper.

[0037] If necessary, the paper sheet is intended to have a basis weight between 70 g / m². 2 and 150 g / m² 2 according to ISO 536:2019.

[0038] If applicable, the paper sheet is required to have an elongation at break of at least 7% in the machine direction and / or in the transverse direction according to ISO 1924-3:2005.

[0039] If necessary, the paper sheet is required to have a tear resistance index of at least 10 mN g / m². 2in the machine direction according to ISO 1974:2012 and / or of at least 15 mN g / m 2 exhibits in the transverse direction according to ISO 1974:2012.

[0040] Optionally, the paper sheet is required to have a tensile strength index of at least 5.0 J / g in the machine direction according to ISO 1924-3:2005 and / or at least 2.0 J / g in the transverse direction according to ISO 1924-3:2005. Optionally, the paper sheet is required to have a burst strength of at least 500 kPa according to ISO 2758:2014.

[0041] If applicable, the paper sheet is required to have a tear strength of at least 1,000 mN, in particular at least 1,300 mN, in the machine direction and / or in the transverse direction in accordance with ISO 1974:2012.

[0042] If necessary, the cuts are designed to run along the machine direction of the paper sheet.

[0043] Also disclosed is a package, in particular a paper package, comprising an interior surrounded by a packaging material and a carrying handle arranged on the packaging material.

[0044] If applicable, the carrying handle of this packaging is designed as disclosed here.

[0045] If necessary, the carrying handle is intended to be glued to the packaging material.

[0046] If necessary, the carrying handle is to be glued to the packaging material using a starch adhesive.

[0047] Further features can be found in the patent claims, the figures and the description of the exemplary embodiments.

[0048] Certain embodiments of the invention are discussed below using illustrative examples. These are intended solely for illustrative purposes and do not limit the scope of protection defined by the patent claims.

[0049] They show:

[0050] Fig. 1 is a schematic top view of a carrying handle according to a first embodiment; Fig. 2 is a schematic top view of a carrying handle according to a second embodiment; and

[0051] Fig. 3 shows a schematic top view of a package with a carrying handle according to an exemplary embodiment.

[0052] Unless otherwise specified or apparent from the context, the following features are shown in the figures: paper sheet 1, incision 2, handle part 3, end 4 of an incision 2, recess 5, packaging material 6, carrying handle 7.

[0053] Fig. 1 shows a schematic top view of a carrying handle according to a first embodiment. In this embodiment, the carrying handle consists of a sheet of paper 1, which is provided with two parallel, straight cuts 2. Circular recesses 5 are arranged at the respective ends 4 of the cuts 2 (each cut 2 has two ends 4).

[0054] In this embodiment, the incisions 2 extend radially into the recesses 5.

[0055] A handle part 3 is formed between the two incisions 2, which can be engaged with a hand or a lifting device.

[0056] Along the cuts 2, essentially no paper material has been removed, so adjacent areas of the paper sheet lie directly against each other. Therefore, a cut 2, as shown here, is to be distinguished, for example, from a hole or a slot, which do not constitute a cut 2 in this sense.

[0057] In this embodiment, the length of the two incisions 2 between their two ends 4 is approximately 120 mm. The normal distance between the incisions 2, which simultaneously defines the width of the handle part 3, is approximately 30 mm. The diameter of the circular recesses is approximately 5 mm.

[0058] The paper sheet 1 used in this embodiment is single-ply kraft paper with the property profile specified in Table 1 below.

[0059] Fig. 2 shows a schematic top view of a carrying handle according to a second embodiment. This carrying handle is largely similar to that of the first embodiment, with the difference that the cutouts 2 run tangentially into the recesses 5.

[0060] Other embodiments are conceivable, not shown here, in which the cuts run into the recesses in different ways than those expressly shown here.

[0061] Fig. 3 shows a schematic top view of a package with a carrying handle 7 according to an exemplary embodiment. Here, a carrying handle 7, as described with reference to Fig. 1, has been attached to a packaging material 6 in order to be able to use the carrying handle as intended.

[0062] In this embodiment, the packaging material 6, like the carrying handle 7 itself, is also made of kraft paper. In this embodiment, the packaging material 6 surrounds a substantially prismatic interior space that can accommodate various goods, for example, bulk materials such as cement or sand.

[0063] In this embodiment, the carrying handle 7 is attached using a starch-based adhesive applied to the outer circumference of the paper sheet 1, thereby bonding the paper sheet 1 and the packaging material 6. The starch-based adhesive is solvent-free and can be cured by heat. To ensure the proper function of the carrying handle 7, no adhesive is provided in the area of ​​the handle part 3.

[0064] Such an arrangement allows the carrying handle 7 to be used for lifting objects weighing up to 10 kg that are packed in such packaging.

Claims

Patent claims 1. Carrying handle for a package, wherein the carrying handle is formed from or comprises a sheet of paper (1), wherein at least two spaced-apart incisions (2) are provided in the sheet of paper (1), such that a handle part (3) is formed from the area of ​​the sheet of paper (1) located between the incisions (2), characterized in that a round, in particular a circular, recess (5) is connected to each of the ends (4) of the incisions (2).

2. Carrying handle according to claim 1, characterized in that the incisions (2) are straight and / or curved.

3. Carrying handle according to claim 1 or 2, characterized in that, - that the course of the cuts (2) is parallel to each other, - and / or that the course of the incisions (2) is mirrored along an axis lying on the sheet of paper (1).

4. Carrying handle according to one of claims 1 to 3, characterized in that the ends (4) of the incisions (2) open tangentially or radially into the respective recess (5).

5. Carrying handle according to one of claims 1 to 4, characterized in that the length of the incisions (2) is between 100 mm and 150 mm, in particular between 110 mm and 120 mm, and / or that the normal distance between the incisions (2) is between 20 mm and 50 mm, in particular between 30 mm and 40 mm.

6. Carrying handle according to one of claims 1 to 5, characterized in that the diameter of the recesses (5) is between 3 mm and 8 mm, in particular between 4 mm and 6 mm.

7. Carrying handle according to one of claims 1 to 6, characterized in that the paper sheet (1 ) is made of kraft paper.

8. Carrying handle according to one of claims 1 to 7, characterized in that, - that the sheet of paper (1 ) has a basis weight between 70 g / m²2 and 150 g / m² 2 according to ISO 536:2019, - and / or that the paper sheet (1) has an elongation at break of at least 7% in the machine direction and / or in the transverse direction according to ISO 1924-3:2005.

9. Carrying handle according to one of claims 1 to 8, characterized in that, - that the paper sheet (1 ) has a tear resistance index of at least 10 mN g / m² 2 in the machine direction according to ISO 1974:2012 and / or of at least 15 mN g / m 2 in the transverse direction according to ISO 1974:2012, - that the paper sheet (1 ) has a tensile strength index of at least 5.0 J / g in the machine direction according to ISO 1924-3:2005 and / or of at least 2.0 J / g in the transverse direction according to ISO 1924-3:2005.

10. Carrying handle, characterized in that the incisions (2) run along the machine direction of the paper sheet (1).

11. Packaging, in particular paper packaging, comprising an interior surrounded by a packaging material (6) and a carrying handle (7) arranged on the packaging material (6) according to one of claims 1 to 10.

12. Packaging according to claim 11, characterized in that the carrying handle (7) is glued to the packaging material (6).

13. Packaging according to claim 12, characterized in that the carrying handle (7) is bonded to the packaging material (6) by means of a starch adhesive.

14. Packaging according to claim 12 or 13, characterized in that the area of ​​the handle part (3) is free of adhesive.

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