HK1081503B - Packaging tools - Google Patents

Abstract

Packaging tools (1) centralize a plurality of cylindrical containers for packaging purposes; inter alia, such tools have the upper portion (1A), side portions (1B1, 1B2) and bottom portions (1C1, 1C2) that are respectively formed by plate like materials, two cross-cut lines (13) are set from the upper portion (1A) towards each side portion (1B1, 1B2) to form a holding portion (11). Between each cross-cut line (13), an opening portion (21) with a pre-determined width and height is set in the border area involving the upper portion (1A) and each side portion (1B1, 1B2). In the case of the holding portion (11) being lifted to cause the opening portion (21) to get close to the side of the upper portion of a container, before the two ends [in the direction of width] of the opening portion (21) contact the upper portion of the container, the inferior border (21a) of the opening portion (21) is caused to contact the container peripherally to form an opening portion (21). In this way, paper materials, etc with the same [thickness of panel] as the previous ones may be used to provide packaging tools which are not easily broken

Description

Packaging appliance

Technical Field

The present invention relates to a packaging tool, and more particularly to a packaging tool for collectively packaging a plurality of cylindrical containers.

Background

Conventionally, there have been disclosed various packaging tools for collectively packaging a plurality of cylindrical containers for storing beverages such as refreshing drinks, beer, shochu and the like. For example, a packaging material called "multi-pack for can" is disclosed, which is made of a sheet-like corrugated cardboard material into a cubic shape and contains 6 can containers therein (see, for example, patent document 1). In the multi-pack for cans, a band-shaped handle is formed by cutting an upper portion of a side plate from an upper plate. By grasping the band-shaped handle, the multi-pack accommodating the can container can be easily lifted.

However, when the handle is formed by cutting only the upper portions of the upper plate and the side plate, the following problems occur. That is, when the can container is stored in the multi-pack without a gap, the corrugated board paper constituting the multi-pack is not deformed, and there is a problem that it is difficult to insert a hand into the handle. On the other hand, if a large gap is provided between the multi-pack and the can container to improve the deformability, the can container may be displaced from the multi-pack and may be detached from the multi-pack and dropped.

Further, a bundling tool for packaging is disclosed, which can solve the above-mentioned problems. As shown in fig. 6 and 7, the bundling tool 101 for packaging is provided with 2 cutting lines 124 for forming the grip portion 125, and another cutting line 130 is formed between the cutting lines 124 (see, for example, patent document 2). The additional slit line 130 is formed at a position corresponding to an upper end edge of the received can. Therefore, when the grip portion 125 is lifted up, the upper end of the bundling tool for packaging 101 approaches the upper end side of the can, the slit line 130 is opened, and the upper end edge of the can enters. Therefore, the tying tool 101 can be easily deformed. As a result, the grip portion 125 can be lifted upward largely.

Further, a bundling tool for packaging having a hole 208 formed to hook a head portion of a bottle or the like as a packaging object is disclosed (for example, see patent document 3). As shown in fig. 8, in this bundling tool for packaging, an inverted triangular hole 208 is formed at a position corresponding to the bottle head, and the bottle head is fitted into the hole 208, whereby the displacement and movement of the bottle are suppressed.

(patent document 1) Japanese patent laid-open No. 2001-328670 (FIG. 2, abstract)

(patent document 2) Japanese patent application laid-open No. 8-2551 (FIG. 3, abstract)

(patent document 3) JP Kokai No. 7-11566 (FIG. 1)

However, the bundling tool for packaging of patent document 2 has the following problems. That is, since the slit line 130 formed between the grip parts 125 is short, when the grip parts 125 are lifted upward, the upper end edge of the can directly contacts both ends of the slit line 130. Since an annular protrusion constituting a part of the upper lid is generally formed on the upper end edge of the can, the protrusion bites into both end portions of the cut line 130, and a large stress is applied to each end portion, which may cause both end portions of the cut line 130 to break. Such a problem occurs particularly remarkably because the cut line 130 is a simple linear cut line.

In addition, the bundling tool for packaging in patent document 3 is intended only to suppress displacement and movement of a container such as a bottle, and therefore, the hole 208 has a shape corresponding to the shape of the bottle. Therefore, when the handle 236 is lifted, a force is applied to the lower edge of the hole 208 from the outer peripheral surface of the bottle, and a force is applied from the head of the bottle to both ends of the hole 208. As a result, the force generated when the handle 236 is lifted is directly applied to both ends of the hole, and a large stress occurs at both ends of the hole 208, and the package tying implement is broken.

In response to this problem, the thickness of the packaging material may be increased, or the periphery of the slit line 130 described in patent document 2 or the hole 208 described in patent document 3, which is easily broken, may be reinforced with a reinforcing material so as to be less likely to be broken. However, these measures lead to an increase in material cost, and in the latter measure, the reinforcing material becomes an obstacle, making it difficult to package the container, or impairing the appearance of the packaging appliance.

Disclosure of Invention

The present inventors have made extensive studies to overcome the above problems, and as a result, have found that the above problems can be solved by using a paper material having the same thickness as that of the conventional paper material by improving the shape of an opening described later, and the present invention has been completed.

The present invention has been made to solve the above problems, and particularly, in the invention of claim 1, a packaging tool is packaged by collecting a plurality of cylindrical containers; the method is characterized in that: the container is provided with an upper surface part, a side surface part and a bottom surface part which are respectively made of plate-shaped materials, wherein a holding part is formed by arranging 2 cutting lines from the upper surface part to each side surface part, an opening part with preset width and height is arranged in the boundary area of the upper surface part and each side surface part between the cutting lines, and the opening part is formed in such a way that when the holding part is lifted to enable the opening part to be close to the upper end part side of the container, the lower edge of the opening part is contacted with the outer peripheral surface of the container before the two ends of the opening part in the width direction are contacted with the upper end part of the container.

In the case of such a configuration, even if the grip portion is lifted, a large stress is not applied to both ends of the opening portion. Therefore, the breakage of both ends of the opening portion can be effectively prevented.

In the invention according to claim 2, the width of the opening is such that the container upper end does not contact both ends in the width direction of the opening even when the grip portion is lifted up and the opening is brought close to the container upper end. With this configuration, in addition to the effect of claim 1, since force is not directly applied to both ends of the opening portion from the upper end portion of the container, breakage of the packaging material can be further prevented.

In the invention of claim 3, there is a feature that: the opening has an inverted triangle shape. With this configuration, in addition to the action of claim 1 or claim 2, both sides of the triangle of the opening portion come into contact with the outer peripheral surface of the container, and the external force can be uniformly received by this portion. Therefore, stress acting on each vertex of the opening can be reduced.

In the invention of claim 4, there is a feature that: the opening is formed in an arc shape at a portion contacting the outer peripheral surface of the container. With this configuration, in addition to the function of claim 1 or 2, since the arc-shaped edge portion of the opening uniformly contacts the outer peripheral surface of the container, even if a large force is applied from the grip portion, the arc-shaped edge portion can uniformly receive the force. As a result, breakage of the packaging tool can be effectively suppressed.

In the invention of claim 5, there is a feature that: the portion corresponding to the apex of the opening is formed in an arc shape. With this configuration, in addition to the effects of the inventions of items 1 to 4, even if stress is applied to the respective apexes of the opening, the stress is less likely to concentrate at one location than in the case of a conventional linear opening, and breakage of the packaging material is further suppressed.

In the invention of claim 6, there is a feature that: a cutting line intersecting the boundary line between the upper surface portion and the side surface portion is provided near both sides of the opening in the width direction. With this configuration, in addition to the effects of the inventions of claims 1 to 5, even when the packaging material is broken from both ends of the opening portion, the breakage can be prevented by the cutting line, and further progress thereof can be suppressed.

In the packaging device of the present invention, since the wide opening portion is formed at the upper end portion of the packaging device, the lower edge portion of the opening portion is brought into contact with the outer peripheral surface of the container before the upper end portion of the container is brought into contact with both ends of the opening portion, and the force is received by the lower edge portion, so that breakage at both ends of the opening portion can be effectively prevented.

Drawings

Fig. 1 is a developed view showing a packaging tool according to an embodiment of the present invention.

Fig. 2 is a view showing a state where the packaging tool shown in fig. 1 is assembled, fig. 2(a) is a plan view, and fig. 2(B) is a front view.

Fig. 3 is a sectional view taken along line III-III of fig. 2(B), and particularly shows a state where the grip portion is lifted.

Fig. 4 is a perspective view of the packaging device disclosed in fig. 2, particularly illustrating a state in which the grip portion is lifted.

Fig. 5 is a perspective view showing a modified example of the opening portion of the packaging material of the present invention, and fig. 5(a) is a case where a quadrangle and a triangle are combined, and fig. 5(B) is a case where a quadrangle and an arc are combined.

Fig. 6 is a front view showing a conventional packaging tool.

Fig. 7 is a perspective view of the packaging appliance disclosed in fig. 6.

Fig. 8 is a perspective view showing another past example.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings

(general overview)

Fig. 1 is a development view of a packaging tool 1 of the present embodiment. As shown in FIG. 1, the packaging material 1 is constituted by an upper surface part 1A and side surface parts 1B connected to both sides of the upper surface part 1A integrally with each other₁、1B₂And the side surface parts 1B₁、1B₂Connected bottom surface part 1C₁、1C₂. Each member 1A, 1B₁、1B₂、1C₁、1C₂Is made of thin paper material, and is bent mutually at the boundary line of the upper surface part, the side surface part and the bottom surface part. The material may also be a corrugated board material having a predetermined thickness, or the like. In addition, the width W of the packaging tool 1 can be variously selected according to the size of the can container to be accommodatedAlternatively, but in this embodiment, it is about 175 mm. LA of the upper part is about 125mm, and each side part 1B₁、1B₂LB of₁、LB₂Approximately 170 mm.

In addition, the side surface part 1B₁、1B₂Are formed with fixing portions 3 at both ends in the width direction, the fixing portions 3 being used for preventing the container (e.g., can container) from slipping off when the container is packed. In addition, 2 bottom surface parts 1C₁、1C₂They were joined to each other to have a thickness of about 125mm as same as that of the upper surface portion 1A. Bottom 1C₁、1C₂The mutual connection will be formed on the other bottom surface part 1C₂The protrusion 7 is joined to the bottom surface 1C formed on one side₁Receiving well 5. In addition, there are cases where both are joined with an adhesive. The broken line in the figure indicates a broken line.

The container packed in the packing container 1 of the present embodiment is a cylindrical can container having a height of about 170mm, an outer peripheral diameter of the cylindrical portion of about 66mm, and a diameter of the tapered upper end portion of about 60mm (2 and 6/16 inches). In addition, the weight of each of them was about 500 g. Therefore, when 6 can containers are packed as described later, the total weight is about 3000 g. However, these dimensions and weights are examples, and if the dimensions of the various parts of the can container are changed, the dimensions of the various parts of the packaging appliance 1 are changed accordingly. The object to be packaged is not limited to a can container, and may be any container such as a container for storing food, for example, a cylindrical container.

(cutting line and grip)

The upper surface portion 1A is provided with 2 cutting lines 13 having a predetermined curved shape for forming the grip portion 11. The cutting lines 13 are formed symmetrically with each other, and the end of each cutting line 13 reaches the side surface part 1B₁、1B₂A part of (a). The width of the region sandwiched by the cutting lines 13 is wider at the central portion toward the side surface portions 1B₁、1B₂The direction of (a) is narrowed once. Then, the side surface part 1B is faced₁、1B₂Is widened again, the part becomes a so-called figure eight. In addition, the side surface part 1B₁、1B₂The figure is also a figure of eight. The narrowest part of the region sandwiched by the 2 cutting lines 13 is present in the upper surface portion 1A, and the width thereof is, for example, 30 mm. However, this value is an example, and may be 20mm, 40mm, or a value therebetween.

On the other hand, the central wide portion of the upper surface portion 1A is about 72mm wide. Predetermined fold lines 15 are formed in the wide portions in a substantially triangular shape. Specifically, one side of the triangle is perpendicular to the width direction of the packaging material 1, and the remaining two sides are inclined at about 30 ° to the width direction. The interval between the 2 folding lines 15 extending in the direction perpendicular to the width direction is the same as 30mm in the above-described narrowest width portion. In addition, the upper part 1A and the side part 1B₁、1B₂The interval of the 2 cutting lines 13 on the boundary line of (a) is about 110 mm.

The cutting line 13 of the present embodiment is not completely cut along the entire length, but is a discontinuous cutting line 13 in a state of being joined at a plurality of places. This is to prevent the grip 11 from floating and hindering the conveyance before the grip 11 is used. However, it is needless to say that the cutting line may be a continuous cutting line which completely cuts the entire body from the beginning. In addition, each cutting line 13 reaches the side surface part 1B₁、1B₂Each end portion of (a) is a substantially semicircular arc portion 19 facing the inside in the width direction of the packaging tool 1. This is to prevent the packaging tool 1 from being broken at the end of the cutting line 13 even if a large load is applied to the grip portion 11.

(opening part)

Next, 2 cutting lines 13 formed between the upper surface portion 1A and the side surface portion 1B will be described₁、1B₂The opening 21 of the boundary region. The upper end of the can container is close to or in contact with the opening 21 when the can container is packaged. Specifically, when the grip 11 is lifted up and the opening 21 is brought close to the upper end of the container, the lower edge 21a of the opening comes into contact with the outer peripheral surface of the container before both ends of the opening 21 in the width direction come into contact with the upper end of the container. As shown in FIG. 1, the opening 21 hasHas a substantially triangular shape with 2 vertexes located on the upper face portion 1A and the side face portion 1B₁、1B₂The remaining vertex is located in the vicinity of the boundary line of the side surface part 1B₁、1B₂. Therefore, when the packaging tool 1 is assembled, the opening 21 straddles the upper surface 1A and the side surface 1B₁、1B₂Becomes the direction of the inverted triangle. Further, each apex 23 of the opening 21 is cut into a predetermined arc shape. This is so that the packaging does not break at this apex 23. The opening 21 is formed of a substantially quadrangular portion close to the upper end of the container and a substantially triangular portion in contact with the outer peripheral surface of the container (see fig. 5 a).

The width Wo of the opening 21 can be variously selected depending on the size of the can container to be packaged, but in the present embodiment, it is about 51 mm. Therefore, considering the relation of about 60mm in diameter with the upper end of the tank container, the diameter of the tank container is set to be smaller than the diameter of the upper end of the tank containerThe relationship of (1) holds. It is found by experiments that if the ratio of the opening width to the diameter of the container upper end is determined so as to satisfy such a relationship, the container upper end does not contact both ends in the width direction of the opening 21. The height (vertical direction in the figure) Lo of the opening 21 is about 21 mm. These values are examples, and the opening width Wo may be about 40mm to 60mm, and the height Lo may be about 10mm to 30 mm.

Further, cutting lines (arc-shaped cutting lines) 25 are formed in the vicinity of both ends of the opening 21 in the width direction so as to be slightly spaced apart from the opening 21. The cutting line 25 is curved in a direction along arcs at both ends of the opening 21 (an arc convex outward in the width direction). The arc-shaped cutting line 25 can be variously selected, but in the present embodiment, it spans the upper surface portion 1A and the side surface portion 1B₁、1B₂The boundary line of (2) is about 20 mm.

(action)

Next, the operation of the packaging tool 1 of the present embodiment will be described with reference to fig. 2 to 4. Fig. 2 is a plan view and a front view showing a case where 6 can containers are packed with the packing device 1 of the present embodiment. In the figure, the grip 11 is not yet lifted. As shown in the plan view of fig. 2(a), the can containers are packed in 2 rows and 3 columns, and the gripping portions 11 are formed at positions corresponding to the central 2. As shown in the plan view and the front view, the opening 21 of the packaging tool 1 is located at a position corresponding to the upper end of the central can container. However, in a state where the grip 11 is not lifted as shown in the drawing, the upper end of the can container does not contact each edge of the opening 21.

Fig. 3 is a cross-sectional view taken along line III-III of fig. 2(B), and particularly shows a state in which the grip 11 is lifted. In order to lift the grip portion 11, both the portions of the central portion of the grip portion 11 bent outward are bent inward of the packaging material 1. At this time, since the triangular bending line 15 is formed at the bent portion, a part of the grip portion 11 is bent along the bending line 15, and easily enters the gap between the can containers. The grip portion 11 can be lifted by inserting fingers under the grip portion 11 and gripping the grip portion 11. When the grip portion 11 is lifted, the upper end portion of the packaging tool 1 is pulled toward the center of the grip portion 11. Therefore, the opening 21 formed in the packaging tool 1 is close to the upper end edge of the can container.

However, since the width Wo of the opening 21 is formed longer than the conventional width, the lower edge 21a of the opening contacts the outer peripheral surface of the can before both ends of the opening 21 contact the upper end edge of the can. This can be seen also from fig. 4, which is a perspective view enlarging the periphery of the opening 21. Therefore, stress is not concentrated at both ends of the opening 21, and the portion is not broken. Even when both ends of the opening 21 are broken by applying a large external force beyond expectation, the arc-shaped cutting lines 25 are formed near both sides, and therefore, the breakage is blocked by the arc-shaped cutting lines 25, and further progress is suppressed.

On the other hand, as the grip 11 is lifted up, the 2 lower edges 21a of the opening 21 come into contact with the outer peripheral surface of the can container. At this time, the opening 21 has 2 lower edges 21a forming an inverted triangle, and therefore, contacts the outer peripheral surface of the can container over a long range of each lower edge 21 a. Therefore, a large stress is not locally applied to each lower edge 21a, and the packaging material 1 is not broken from the lower edge 21a because the lower edge 21a is linear. Instead of the 2 lower edges 21a, the entire lower edge of the opening 21 may be formed in an arc shape that is convex downward. By forming the lower edge of the opening 21, which is in contact with the outer peripheral surface of the can container, into an arc shape in this way, the can container is more uniformly contacted, and breakage of the packaging material can be effectively prevented. The opening 21 may be formed by a substantially quadrangular portion close to the upper end of the container and a substantially arc-shaped portion in contact with the outer peripheral surface of the container (see fig. 5B).

As described above, in the packaging device of the present embodiment, although it is assumed that both ends in the width direction of the opening portion 21 are in contact with the upper end portion of the container, the both ends of the opening portion 21 may be set so as not to be in contact with the upper end portion of the container, taking into consideration the size of the container, the material strength of the packaging device, and the like.

In addition, as described above, the side surface part 1B is reached₁、1B₂The end of the cutting line 13 is formed into a semicircular arc-shaped portion 19 toward the center of the packaging material 1. When the end of the cutting line 13 is directed toward the center side in this way, the packaging tool 1 is less likely to be broken at the end of the cutting line 13 even if a large force is applied to the grip portion 11.

The present invention relates to a packaging material made of paper or the like, and is applicable to a packaging material or the like in which a large number of heavy cans or the like are collectively packaged.

Claims (6)

1. A packaging tool, which collects a plurality of cylindrical containers for packaging; the method is characterized in that:

comprises an upper surface part, a side surface part and a bottom surface part which are respectively made of plate-shaped materials,

2 cutting lines are provided from the upper surface part to each side surface part to form a holding part,

an opening having a predetermined width and height is provided between the cutting lines in a boundary region between the upper surface portion and the side surface portions,

the opening portion is formed such that, when the grip portion is lifted up and the opening portion is brought close to the container upper end portion side, the lower edge of the opening portion is brought into contact with the outer peripheral surface of the container before both ends of the opening portion in the width direction are brought into contact with the container upper end portion.

2. The packaging appliance of claim 1, wherein: the width of the opening is such that the container upper end does not contact both ends in the width direction of the opening even when the grip portion is lifted up and the opening is brought close to the container upper end.

3. A packaging appliance as claimed in claim 1 or 2, wherein: the opening has an inverted triangular shape.

4. A packaging appliance as claimed in claim 1 or 2, wherein: the opening is formed in an arc shape at a portion contacting the outer peripheral surface of the container.

5. A packaging appliance as claimed in claim 1 or 2, wherein: the portion corresponding to the apex of the opening is formed in an arc shape.

6. A packaging appliance as claimed in claim 1 or 2, wherein: cutting lines intersecting the boundary line between the upper surface portion and the side surface portion are provided in the vicinity of both sides of the opening in the width direction.