JPH01254541A - Corner-reinforced container and packaging method using said container - Google Patents

Abstract

PURPOSE:To provide a container easy to form and good in the compressive strength and packaging efficiency of the content, by keeping articles free from contact with the inside of the container corners, imparting a plurality of creases to the container flaps to provide flexibility thereto and making up the container corner posts to fit with the content. CONSTITUTION:Each of the four corners of a container is provided with a corner post 6 formed of an end panel 2, a part of a wing 4 and a reinforcing flap 5. A plurality of creases K is formed on the reinforcing flap 5 to impart flexibility thereto. This reinforcing flap 5 is folded flexibly along the contour of the article being packaged so as to form the corner post 6 fitting well with the side contour of the content, when the reinforcing flap 5 is temporarily folded and a bottom plate is lowered to fold the end panel 2 and the wing 4 at right angles in the packaging operation. When packaging for shipment not only the article of a round shape such as glass and PET bottle but also polygonal and square articles and irregularly shaped articles such as cup, the reinforcing flap 5 is bent and changed in shape according to the shape of the article.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is made of thick paper such as corrugated board, has improved stacking strength, and can be used for glass or plastic circular bottle containers, or for square or polygonal bottle containers. The present invention relates to a corner-reinforced container with improved packaging efficiency for individual containers of various shapes, such as confectionery containers, and a packaging method using the container.

[Prior Art] As is well known, in order to increase the stacking strength of a corrugated cardboard container, it is common to improve the paper quality of the corrugated cardboard base paper that constitutes the container.

However, in order to reduce material costs, the quality of the base paper may be lowered. In addition, due to the actual circumstances during transportation, there is a demand for containers that have windows on the side of the container to allow the contents to be seen from the outside, or containers that prevent the contents from being crushed by the loading pressure during loading. be. In such cases, in order to prevent buckling of the container wall and increase the stacking strength, four corner pillars called triangular corners or double-folded corners are used.
There is one set up in the corner. For example, as shown in FIG.
), bend the sleeve plate 2) at right angles to the inside of the corner,
Formed with double-folded corner pillar 25 (No. 9A)
(Fig. 9B), or by bending an extension piece of the sleeve plate 2) into a triangular shape to form a corner post 26 with a triangular space inside the corner (Fig. 9B) (for example, tlsP
(See Publication No. 4056223).

As is well known, the parts of a cardboard container that require the most strength are the four corners and ruled lines of the container. In other words, the resistance and compressive strength of a container are basically determined by the strength of the four upright panels (end and side panels) that make up the wall, but in reality, the strength of the four upright panels (end and side panels) that make up the wall are The strength is degraded by the ruled lines. Furthermore, the easier the panel is to bend, the more the stress in that part will decrease due to bending, and the more stress will be concentrated in one corner, the more the container will break at a level lower than the panel strength.

Therefore, in order to strengthen the panel to make it more difficult to bend and to avoid concentrating the stacking pressure on one corner, the above-mentioned publication suggests that the cardboard base paper be bent to form an L-shaped or triangular corner column. It was done as if it were done. In order to further increase the strength of the corner part, it has been proposed that the flaps constituting the corner pillars are bent into an angular shape and attached to the inside of the container side and end surfaces, as shown in FIG. 9C.

That is, in this conventional example, in a container in which sleeve pieces 34 are arranged in series on both sides of a side plate 33, at least three flaps 35.3 are defined on one wing of the sleeve piece 34 via ruled lines.
6.37, and the front and rear flaps 35.37 sandwiching the central flap 36 are glued to the sleeve piece 34 or the side plate 33, respectively, to create a corner support having a flap triangular space in a part of the corner of the container. 37 was formed.

[Problems to be Solved by the Invention] However, in the above-mentioned device, among the three flaps connected to one wing of the sleeve piece, the front and rear flaps 35 and 37 are respectively fixed to the sleeve piece 34 or the side plate 33 with adhesive. Since the corner pillars 37 are triangular in shape, the shape of the corner pillars 37 is constant and there is no flexibility, so the corner pillars and the packaged object G sometimes do not fit.

Therefore, as shown in FIG. 9C, a loss portion S is generated within the case, and the efficiency of accommodating the packaged items is reduced. Furthermore, the contents may rattle within the case, and the internal pressure from the items housed inside the case may cause an unnatural load to be applied to the reinforcing pillars, resulting in the problem that the side walls are likely to become distorted and break.

On the other hand, when such a case is assembled from corrugated cardboard sheets and filled with goods to be packaged, the flaps that make up the corner pillars are mechanically attached using a special caser to reinforce a portion of the corner of the case. There is a need to. Therefore, various work processes such as folding and adhering the flap, forming, and subsequent supply and packaging of the packaged items are required, making the entire device complex and requiring large-scale equipment.Additionally, packaging is required, which increases packaging costs. There was a problem that it was very high.

The present invention is an improvement to solve these problems, and an object of the present invention is to provide a corner-reinforced container that is easy to assemble and has good compressive strength and packaging efficiency for contents.

Another object of the present invention is to provide a packaging method that can shorten the process from filling and packaging a cardboard sheet to an article to be packaged, and can reduce the equipment space of the entire device.

Means for Solving the Problem] In order to achieve the above object, the corner-reinforced container of the present invention is a container in which an end plate and a side plate are provided symmetrically around a rectangular bottom plate. Corner reinforcing flaps connected to the sleeve piece and one side edge of the sleeve piece and having a length longer than the width of the sleeve piece are sequentially extended, and each corner reinforcing flap has at least three pieces in parallel with the base of the flap. The above-mentioned ruled lines K are carved at predetermined intervals, and the cope-reinforcing flap is configured to be flexible using the ruled lines, and then the sleeve piece is overlapped with the inside of the side plate, and one corner reinforcing flap is attached to the sleeve piece and the end plate. A part of the corner of the container is folded inside so as to be inscribed, and the corner reinforcing flap bends to fit the contour of the packaged item when the packaged item is stored.

Further, the present invention provides a method for filling and packaging articles to be packaged from a blank sheet of a container, which comprises the steps (a) to (a) below. In other words, (by carving ruled lines on a cardboard material such as laminated cardboard to form a rectangular bottom plate, side plates and end plates are arranged symmetrically on the four sides of the bottom plate, and sleeve pieces are placed on the left and right extensions of the end plate. Corner reinforcing flaps connected to one side edge of the sleeve piece and having a length longer than the width of the sleeve piece are sequentially extended, and each corner reinforcing flap has at least three or more ruled lines parallel to the base of the flap. Prepare a blank sheet with K engraved at predetermined intervals, q temporarily fold the reinforcing flap 180° onto the sleeve piece from its base, n then insert a pair of left and right side guides from the upper side of the blank sheet. The reinforcing flap is brought into contact with the upper surface of the reinforcing flap to prevent the temporarily folded reinforcing flap from rebounding, and the packaged items are then filled onto the bottom plate from between the pair of left and right side guides. The item to be packaged is lowered, and while lowering, while removing the reinforcing flaps temporarily held by the side guides, first bend both sleeve pieces perpendicular to the end plate using a forming jig installed below the acid base, and then fold both end plates. It is characterized in that after being raised vertically, the side plates are raised vertically and the side plates and sleeve pieces are glued together.

[Example 1 Next, the present invention will be described in detail according to an embodiment shown in the drawings.

FIG. 1 is a perspective view showing an embodiment of a tray-type corner reinforced container, FIG. 2 is an enlarged perspective view of a corner support portion, and FIG. 3 is a developed view of the same container.

In Fig. 3, 1 is a rectangular bottom plate made of thick paper such as corrugated cardboard, 2 is an end plate connected to two opposing sides of the four sides of the square bottom plate 1, and 3 is the other two opposing sides. The side plates 4 are continuous to the end plate 2, and 4 are sleeve pieces continuous to both sides of the end plate 2. This sleeve piece 4 acts as a gluing piece for the side plate 3, as will be described later. Further, on the extension of one side edge of the sleeve piece 4, a corner reinforcing flap 5 is continuously provided which is folded back to the inside of the corner during assembly to be described later and becomes a component of the corner support 6. This reinforcing flap 5 is set to have a length twice or more than the width of the sleeve piece 4, and has three or more parallel reinforcing flaps parallel to the base of the flap in order to provide flexibility. Ruled lines K are provided at approximately equal intervals.

The reinforcing flap 5 is folded inward of the container as shown in FIG.
Alternatively, the other end 5b is left free (free end) without being pasted, and a portion of the corner is folded back inward to form a substantially arched arrangement so as to be inscribed in the sleeve piece 4 and the end plate 2.

Note that when the reinforcing flap 5 is not attached to the sleeve piece 4, it bounces back due to the inherent resilience of the flap, but when storing the contents, the flap is bent from the ruled line and stored in the container. Depending on the shape, size, etc. of the contents G to be loaded, as shown in FIGS. 48 to 4E, it bends softly so that W4 stains the outer surface of the contents.

In FIG. 3, the reference numeral 7 is an inner plate connected to the edge of the side plate 3, which is bent inward during assembly and attached to the inner surface of the side plate 3, as shown in FIGS. 1 and 2. It is something to do. The presence of this inner plate 7 not only reinforces the side plate 3 but also reduces the step T between the reinforcing flap 5 and the side plate 3, thereby preventing the contents from coming loose (see Figure 6). ).

Using the die-cut blank sheet configured as described above, the container of the present invention is assembled and used as follows.

FIG. 5 shows the filling and packaging process of the object to be packaged according to the present invention. First, a corrugated cardboard sheet X is prepared as shown in FIG. 5A. This corrugated cardboard sheet
Next, as shown in the opening of the figure, the reinforcing flap 5 attached to the extension of the sleeve piece 4 is tentatively bent 180 degrees from its base onto the sleeve piece 4.

Then, the reinforcing flap 5 is temporarily held down by the folding guide a so that it does not return, and the corrugated cardboard sheet X is transported laterally while being temporarily folded.

A pair of left and right side guides b are lowered from above the corrugated cardboard sheet X so as to come into contact with the upper surface of the temporarily folded reinforcing flap 5. The pair of side guides descends parallel to the base of the end plate 2 as shown in FIG. 520, thereby preventing the reinforcing flap 5 from rebounding.

Then, the temporary folding guide a is removed, and the article to be packaged G is filled and placed on the bottom plate 1 between the pair of lowered side guides b.

Next, the bottom plate and the packaged object are placed as a unit on the lifting frame C and lowered.

In that case, a forming jig d is prepared below the bottom plate for bending and standing up the end plate 2, side plates 3 and sleeve pieces 4 at the stage of lowering the bottom plate (as shown in Figure 5). A downward path for the bottom plate is provided between the fixtures d.

Next, when the bottom plate 1 and the object to be packaged are lowered, the side guide b
While removing the temporary holding of the reinforcing flaps 5, first bend both sleeve pieces 4 in a direction perpendicular to the end plate 2 using a forming jig d below the bottom plate, and then raise both left and right end plates 2 in a vertical direction. Next, while raising the side plates 3 in the vertical direction, glue is applied to the facing surfaces of the side plates 3 and the sleeve pieces 4 using the gluing device l provided on the sides (see Fig. 5), and then the side plates 3 are It is fixed by pressing (Fig. 5, G).

In the manner described above, the supply of the article to be packaged from the state of the corrugated cardboard sheet, the box-making, and the packaging operations are completed.

As shown in FIG. 1, the corner-reinforced container of the example obtained in this way has an open window on one side of two sets of opposing sides through which the product G (not shown) stored inside can be viewed directly from the outside. Corner supports 6 are formed at each of the four corners of the container, each consisting of the end plate 2, part of the sleeve piece 4, and a reinforcing flap 5.

Since the reinforcing flap 5 is engraved with a plurality of ruled lines K to give it flexibility, the reinforcing flap 5 is temporarily folded in the packaging process as shown in FIG. 5, and the bottom plate is lowered to form the end plate 2. When the sleeve piece 4 is bent at right angles, the reinforcing flap 5 bends softly along the contour of the packaged object, as shown in FIG. 4, to form a corner support 6 that fits well with the side shape of the contents. That will happen. Therefore, as in the above embodiment, when storing and transporting not only circular articles such as glass bottles and PET bottles, but also polygonal articles, square articles, and other irregularly shaped articles such as pots, the shape of the articles In response to this, the reinforcing flap changes its shape and bends, resulting in the state shown in FIGS. 4A to 4E.

After filling and packaging the articles to be packaged, the top surface of the container 10 is covered with a separate lid or cover material 11, 12, 13, 14 (for example, the seventh
(see figure) before transportation.

In the above-described embodiment, one of the two pairs of opposing side surfaces is an open window, but for example, all of the two pairs of opposing side surfaces may be closed. Furthermore, in addition to closing the top surface of the container with a separate cover film or lid, the lid material 15 is connected to the upper edge of one end plate 2 to form an integral structure with the container 10, as shown in FIG. Good too. It goes without saying that other changes and modifications to the above embodiments are possible.

[Effects of the Invention] As described above, according to the container of the present invention, unlike conventional types, the reinforcing flaps that constitute the corner struts are free without being bonded to the inner surface of a part of the corner of the container, and A plurality of ruled lines are carved in order to give flexibility to the product, and the corner support can be fitted to the object to be packaged. This reduces the volume loss caused by the corner support when storing the object. It is possible to improve the storage efficiency and also to tightly package the products.

In addition, during transportation, it is possible to reduce the amount of looseness of the items inside the container, and there is no need to apply excessive force to the support due to the pressure of the items, which eliminates the problem of the container becoming distorted or damaged. can.

Furthermore, a large number of ruled lines are formed on the reinforcing flap,
Since the reinforcing flaps are bent into a polygonal shape from the ruled lines during packaging, buckling of the corner struts is prevented and compressive strength can be improved.

Furthermore, according to the method of the present invention, when packaging from the state of corrugated cardboard sheet 1 to 1, it is possible to omit the folding and gluing steps of the corner reinforcing flaps, and the wrap-around method allows filling and forming while wrapping the contents. Therefore, the packaging cost can be reduced and the packaging device can be made simple and compact.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of a tray-type corner reinforced container, Fig. 2 is an enlarged perspective view of the corner support portion,
Fig. 3 is a developed view of the one in Fig. 1, Figs. 4A to 4E are plan views showing the bent state of the corner support according to the shape of the article when the article is stored, and Figs. A perspective view showing the packaging process according to the invention, FIG. 6 is a plan view of the main part showing the inner plate attached to the inner surface of the side plate, FIG. 7 is a perspective view showing the lid material applied to the top surface, and FIG. 8 is the integrated lid. FIGS. 9A to 9C are perspective views showing a conventional corner support. 1... Bottom plate, 2... End plate, 3... Side plate, 4...
Sleeve piece, 5... Reinforcement flap, 5a... Root part, 5b
...Free end, 6... Corner support, 7... Inner plate, 10... Container, 11.12.13.14.15...
・Lid, a...temporary folding guide, b...side guide, C...lifting frame, d...forming jig, e...
Gluing device, G: Item to be packaged, X: Blank sheet. Figure 1 Figure 2 Figure 3 ＼〜〜／′ Drunk Figure 40 Flute 4D Figure Eolsa Figure 6 Figure 8 Figure 9C Procedure Amendment (Method) % Formula % 1. Indication of the incident 1988 Year Patent Application No. 160916 2 Title of the invention Corner-reinforced container and packaging method using the container 3 Relationship with the case of the person making the amendment Patent applicant Honshu Paper Industries Co., Ltd. 4 Agent
PersonOri Kaikan 1-18-14 Nishi-Shinbashi, Minato-ku, Tokyo 19869
27th of the month (dispatch mortar) 6. Drawings to be corrected Plane 7, Details of corrections Fig. 1 Fig. 2 Fig. 3 Fig. 4C Your squad's 4D drawing Fig. 4E Fig. Tower 6

Claims (1)

[Claims] 1. End plates (2) (2) symmetrically arranged around a rectangular bottom plate (1).
) and side plates (3) (3), the end plate (
Sleeve pieces (4) (4) and said sleeve pieces (4) on the left and right extension of 2)
Corner reinforcing flaps (5) (5) connected to one side edge of the sleeve piece and having a length longer than the width of the sleeve piece are successively extended, and each corner reinforcing flap (5) has at least one corner reinforcing flap (5) extending parallel to the base of the flap. Three or more ruled lines K are carved at predetermined intervals, the corner reinforcing flap (5) is configured to be flexible using the ruled lines, and then the sleeve piece (4) is superimposed on the inside of the side plate (3) and the corner is reinforced. The flap (5) is folded inside the corner of the container so that it is inscribed in the sleeve piece (4) and the end plate (2), and when the packaged item is stored, the corner reinforcing flap conforms to the outline of the packaged item. A corner-reinforced container characterized by being flexible and bendable. 2. The corner-reinforced container according to item 1, wherein the inner plate (7) is attached to the inner surface of the side plate (3). 3. The corner-reinforced container according to item 1, wherein the open surface of the container is covered with a lid material or a cover material. 4 (a) A rectangular bottom plate (1) is formed by carving ruled lines on a cardboard material such as cardboard, and side plates (3) (3) and end plates (2) (2) are placed symmetrically on the four sides of the bottom plate. ), and the gable board (
2) A corner reinforcing flap (5) (5) connected to the sleeve piece (4) (4) and one side edge of the sleeve piece on the left and right extension of (2) and longer than the width of the sleeve piece (5) At the same time, each corner reinforcing flap (5) is provided with a blank sheet X in which at least three or more ruled lines K are carved at predetermined intervals parallel to the base of the flap, and (b) the above-mentioned Place the reinforcing flap (5) 18 times above the sleeve piece (4) from its base.
Fold the blank sheet X by 0 degrees, and (c) then bring a pair of left and right side guides into contact with the upper surface of each reinforcing flap (5) from the upper side of the blank sheet X to prevent the folded reinforcing flap (5) from rebounding. (b) Next, the material to be packaged is filled onto the bottom plate (1) from between the pair of left and right side guides, (e) After that, the bottom plate (1) and the material to be packed are lowered, and during the lowering, While removing the temporary holding of the reinforcing flaps by the side guides, first bend both sleeve pieces (4) perpendicularly to the end plate (2) using a forming jig provided below the bottom plate, and then fold both sleeve pieces (4) into the end plate (2). A packaging method using a corner-reinforced container, which comprises the steps of: (f) standing up the side plate (3) vertically; and gluing the side plate (3) and the sleeve piece (4).