JP2585066B2 - Corner reinforced container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is formed from cardboard such as corrugated cardboard, improves stacking strength, and has a glass or plastic circular bottle container, or a square or polygonal shape. The present invention relates to a corner-reinforced type container having improved packaging efficiency for individually packaged containers such as confectionery containers.

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

However, the quality of the base paper may be reduced in order to reduce material costs. In addition, there is a need for a container in a form in which a window is opened on the side of the container so that the contents can be seen from the outside, or the contents are not crushed by the pressure applied during loading, due to the situation during transportation and logistics. is there. In such a case, in order to prevent buckling of the container wall surface and increase the stacking strength, there is a type in which corner columns called triangular corners or double-folded corners are provided at four corners. This corner pillar is ninth
As shown in the figure, for example, sleeve plates 21 are provided at both ends of a pair of side plates 20 facing each other.
Is formed by bending the sleeve plate 21 at a right angle inside the corner to form a double-folded corner post 25 (Fig. 9A), or by bending the extended piece of the sleeve plate 21 into a triangular shape (See FIG. 9B) (see, for example, US Pat. No. 4,562,223).

As is well known, the parts requiring the highest strength in the cardboard container are the four corners and the ruled line of the container. That is, the pressure resistance of the container is basically determined by the strength of the four upright panels (wife surface and side surface) constituting the wall surface, but actually, the ruled line provided to fold the flaps As a result, its strength deteriorates. In addition, the easier the panel is to bend, the more the stress at that portion is reduced due to the bending, and the more the stress is concentrated on the corner portion, and the more the panel is broken at a level lower than the panel strength.

Therefore, it is disclosed in the above-mentioned publication that the panel is reinforced so that it is difficult to bend, and the corrugated cardboard is bent to form an L-shaped or triangular corner pillar portion in order to avoid concentration of the product pressure on the corner portion. It was done as if. In order to further increase the strength of the corner portion, as shown in FIG. 9c, a flap that constitutes a corner pillar is bent in an angle shape and adhered to the container side surface and the inside of the wife surface.

That is, in this conventional example, in a container in which the sleeves 34 are continuously provided on both sides of the side plate 33, at least three flaps 35, 36, and 37 partitioned on one wing of the sleeves 34 via the ruled line are connected. Flaps 3 around the center flap 36
5 and 37 are respectively adhered to the sleeve 34 or the side plate 33 to form a corner support 37 having a flap triangular space at the corner of the container.

[Problem to be Solved by the Invention] However, in the above-mentioned one, of the three flaps connected to one wing of the sleeve piece, the front and rear flaps 35 and 37 are fixed to the sleeve piece 34 or the side plate 33 with an adhesive, respectively. Since the corner pillars 37 are formed in a triangular shape, the shape of the corner pillars 37 is constant and there is no flexibility, so that the corner pillars and the article to be packaged G may not fit. Therefore,
As shown in FIG. 9c, a loss portion S is generated in the case, and the efficiency of accommodating the packaged object is reduced. Further, there is a problem that the contents are loose in the case or an unnatural load is applied to the reinforcing column due to the internal pressure of the articles housed therein, so that the side walls are distorted and are easily damaged.

On the other hand, when assembling such a case from the state of the cardboard sheet and filling and packaging the article to be packaged,
In order to reinforce the corners of the case, it is necessary to mechanically attach the flaps constituting the corner pillars with a special caser. Therefore, it is necessary to perform each operation process such as bending and bonding of the flap, forming and subsequent supply of the article to be packaged, packaging, etc., and the entire apparatus becomes complicated, equipment becomes large,
In addition, there is a problem that the cost of packaging is high because the adhesive is required.

An object of the present invention is to improve such a problem and to provide a corner-reinforced container that is easy to assemble, has high compressive strength, and has good packaging efficiency.

[Means for Solving the Problems] In order to achieve the above object, a corner-reinforced type container of the present invention connects two side plates and two end plates facing four sides of a square bottom plate, respectively, Further, in a container in which sleeves are connected to the left and right sides of each endplate, the sleeves are bent inside the side plate so as to be orthogonal to the endplate, and the side plates are joined on the sleeves. A corner reinforcing flap having a width of at least twice the width of the sleeve is integrally provided on one side extension of the sleeve, and a corner reinforcing flap is provided on the corner reinforcing flap in parallel with a boundary line with the sleeve. In addition to engraving a plurality of ruled lines, the corner reinforcing flap is configured as a non-adhesive member that is not fixed to the container body, and when the non-adhesive member comes into contact with the packaged object stored in the container, the plurality of To the side of the packaged item And it is characterized in that it is formed to be bent Nde.

Example Next, the present invention will be described in detail with reference to an example shown in the drawings.

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

In FIG. 3, 1 is a square bottom plate formed of cardboard such as cardboard, 2 is a bottom plate connected to two opposite sides of the four sides of the square bottom plate 1, and 3 is the other two opposite sides. The side plates 4 and 4 are sleeves connected to both sides of the end plate 2. The sleeve 4 functions as a margin for the side plate 3 as described later. Further, on one side edge extension of the sleeve piece 4, a corner reinforcing flap 5 which is turned back to the inside of the corner at the time of assembling to be described later and which is a constituent piece of the corner support 6 is constructed. As an example, the reinforcing flap 5 is set to be at least twice as long as the width of the sleeve 4, and the flap is provided with three or more parallel ruled lines in parallel with the flap base to provide flexibility. K is provided at substantially equal intervals.

The reinforcing flap 5 is to be bent inwardly of the container as shown in FIG. 2. In this case, only the folded base 5a of the flap is adhered to the inner surface of the sleeve 4. Alternatively, the other end 5b is made free (free end) without being adhered, and is folded back inside the corner so as to be bent substantially in an arc so as to be inscribed in the sleeve 4 and the end plate 2.

When the reinforcing flap 5 is not adhered to the sleeve 4, the reinforcing flap 5 rebounds due to the inherent resilience of the flap. However, when storing the contents, the flap is bent from the ruled line and stored in a container. Depending on the shape, size, etc. of the contents G to be formed, each time, as shown in FIGS. 4A to 4E, they are softly bent so as to be adapted to the outer surface of the contents.

In FIG. 3, reference numeral 7 denotes an inner plate connected to the edge of the side plate 3, which is bent inward during assembly as shown in FIGS. 1 and 2 and adhered to the inner surface of the side plate 3. Is what you do. The presence of the inner plate 7 serves to reinforce the side plate 3 and reduce the step T between the reinforcing flap 5 and the side plate 3 to prevent the contents from rattling (sixth embodiment).
See figure).

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

FIG. 5 shows a step of filling and packaging an article to be packaged according to the present invention. First, a cardboard sheet X is prepared as shown in FIG. The corrugated cardboard sheets X are supplied one by one from a sheet magazine in an unfolded state by a machine or by hand, and then, as shown in FIG. Fold it up 180 °. Then, the reinforcing flap 5 is pressed by the temporary folding guide a so as not to return, and the corrugated cardboard sheet X is transferred to the side while being temporarily folded.

A pair of left and right side guides b is lowered from above the corrugated cardboard sheet X so as to contact the upper surface of the temporarily folded reinforcing flap 5. The pair of side guides descends in parallel near the base of the end plate 2 as shown in FIG. 5 to thereby prevent the reinforcing flap 5 from rebounding. Then, the temporary folding guide a is removed, and the article to be packaged G is loaded and placed on the bottom plate 1 from between the pair of lowered side guides b.

Then, the bottom plate and the article to be packaged are mounted as a unit on the lifting frame C as a whole and lowered. In that case,
Below the bottom plate, a forming jig d for bending and erecting the end plate 2, the side plate 3 and the sleeve 4 at the stage of lowering the bottom plate is prepared (FIG. 5E). A lower passage for the bottom plate is provided between the molding jigs d.

Next, when the bottom plate 1 and the object to be packaged are lowered, the sleeves 4 are first folded at right angles to the end plate 2 by the forming jig d below the bottom plate while the temporary holding of the reinforcing flaps 5 by the side guides b is removed. Bend and raise both left and right end boards 2 in the vertical direction. Subsequently, while the both side plates 3 are raised in the vertical direction, the opposing surfaces of the side plates 3 and the sleeve pieces 4 are glued by a gluing device 1 provided on the side (figure 5). It is pressed and fixed (Fig. 5g).

As described above, the supply of the article to be packaged, the box making, and the packaging operation are completed from the state of the cardboard sheet. As shown in FIG. 1, the corner reinforced container of the embodiment obtained as described above has an open window through which a product G (not shown) stored in one of two opposing side surfaces can be directly viewed from the outside. Becomes a tray container having At four corners of the container, corner posts 6 each formed by a part of the end plate 2 and a part of the sleeve 4 and the reinforcing flap 5 are formed. Since a plurality of ruled lines K are engraved on the reinforcing flap 5 to impart flexibility, the reinforcing flap 5 is temporarily folded in a packaging process as shown in FIG. When the sleeve 4 is bent at a right angle, the reinforcing flap 5 is bent softly along the contour of the packaged object as shown in FIG. 4 to form a corner support 6 which is well adapted to the side shape of the contents. Will be. Therefore, as in the above embodiment, when not only circular articles such as glass bottles and PET bottles but also polygonal articles, quadrangular articles, and other irregular articles such as cups are stored and transported, the shapes of the articles are used. Accordingly, the reinforcing flap changes its shape and bends, as shown in FIGS. 4A to 4E.

After filling and packaging the article to be packaged, the top surface of the container 10 is placed on a separate lid material or cover material 11, 12, 13, 14 (for example, see FIG. 7).
Close and serve for transportation.

In the above-described embodiment, one of the two sets of opposing side surfaces is an open window, but, for example, all the two sets of opposing side surfaces may be closed. Further, not only is the top surface of the container closed with a separate cover film or lid, but also the lid member 15 is connected to the upper edge of one end plate 2 as shown in FIG. Is also good. In addition, it goes without saying that the above embodiment can be changed and modified.

[Effects of the Invention] As described above, according to the container of the present invention, unlike the conventional type, the reinforcing flap which is a constituent piece of the corner support is free from being adhered to the inner surface of the corner portion of the container, and is provided on the flap. A plurality of ruled lines are engraved to provide flexibility, so that the corner post can be fitted to the article to be packaged. Efficiency can be improved and products can be packed tightly.

Also, during transportation, it is possible to reduce the backlash of the articles in the container, and to eliminate the problem that the container is distorted or damaged because it is not pressed by the article and unreasonable force is applied to the column. it can. Furthermore, since a large number of ruled lines are formed on the reinforcing flap, and the reinforcing flap is bent into a polygonal shape from this ruled line during packaging,
Buckling of the corner support is prevented, and the compressive strength can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a tray-type corner reinforcing container, FIG. 2 is an enlarged perspective view of a corner support, FIG. 3 is an exploded view of FIG. 1, and FIGS. FIG. 5A to FIG. 5E are perspective views showing a packaging process according to the present invention, and FIG. 6A is attached to an inner surface of a side plate, showing a bent state of a corner support according to the shape of an article when a package is accommodated. FIG. 7 is a plan view of a main part showing an inner plate, FIG. 7 is a perspective view showing a lid member applied to a top surface, FIG. 8 is a perspective view of the container of the present invention having an integral lid,
9A to 9C are perspective views showing a conventional corner support. 1 ... bottom plate, 2 ... wife plate, 3 ... side plate, 4 ... sleeve piece, 5
…… Reinforcement flap, 5a …… Root, 5b …… Free end, 6…
… Corner post, 7 …… inner plate, 10 …… container, 11, 12,
13, 14, 15 ... lid, a ... temporary folding guide, b ... side guide, c ... elevating frame, d ... molding jig, e ...
... Gluing device, G ... Packaged object, X ... Blank sheet.

Claims (4)

(57) [Claims] 1. Two side plates (3, 3) opposed to four sides of a square bottom plate (1) and two end plates (2, 2) are connected to each other, and each end plate (2, 2) is connected. Sleeves (4,
4), the sleeve is bent inside the side plates (3, 3) so as to be orthogonal to the end plate, and the side plate is connected to the sleeves. A corner reinforcing flap (5, 5) having a width of at least twice the width of the sleeve piece is integrally provided on one side extension of the sleeve piece, and a boundary with the sleeve piece is provided on the corner reinforcing flap. Three or more ruled lines (k) are engraved in parallel with the line, and the corner reinforcing flap is formed as a non-adhesive member that is not fixed to the container body. A corner-reinforced type container which is formed so as to conform to the side surface shape of the article to be packaged and bend via the plurality of ruled lines when in contact. 2. A root portion (5a) of the corner reinforcing flap.
2. The corner reinforced container according to claim 1, wherein only the sleeve is bonded to the sleeve. 3. The corner reinforced container according to claim 1, wherein an inner plate (7) is attached to an inner surface of the side plate (3). 4. The corner-reinforced type container according to claim 1, wherein the open surface of the container is covered with a lid material or a cover material.