JP6972862B2 - Self-supporting thin rectangular parallelepiped carton - Google Patents

Description

The present invention relates to a thin rectangular parallelepiped carton that is highly self-supporting, that is, can be stably self-supporting.

A thin rectangular parallelepiped carton having a rectangular bottom surface is easy to fall down, and it is considered to form a leg portion extending outward shortly in order to prevent the fallen shape (Patent Document 1). In the case described in Patent Document 1, a notch that enters the bottom plate portion is formed at the boundary between the front plate portion and the bottom plate portion of the carton, and this notch is used as the front leg portion. Since there is a hole in the bottom, it lacks protection of the contents.

Patent Document 2 discloses a rectangular bottom plate surface having a ruled line in a direction parallel to the short side. The bottom surface of a thin rectangular parallelepiped carton having a rectangular bottom surface tends to warp outward in an arc shape when viewed from the side, but the ruled line can improve the rigidity of the bottom plate surface against the warp. However, it is difficult to improve the rigidity enough to completely overcome the warp.

Japanese Unexamined Patent Publication No. 2006-1631 Japanese Unexamined Patent Publication No. 2001-219929

An object of the present invention is to eliminate or reduce the warp of the bottom surface of a rectangle without relying on the improvement of rigidity.

It is also an object of the present invention to be able to maintain stable independence for a long period of time.

In the self-supporting thin rectangular parallelepiped carton according to the present invention, the long side of the rectangular outer bottom panel is on the lower edge of the short side of the rectangular front panel, and the left and right sides of the rectangle narrower than the front panel are on both sides of the long side of the front panel. The long side of the side panel is made of a pattern having a panel structure in which the long side of the rectangular back panel is connected to either side edge of the left or right side panel, and the outer bottom surface thereof. A repulsive force blocking rule line extending in the longitudinal direction is formed on the panel.

In a carton that is made three-dimensionally by folding a paper pattern, the elasticity (repulsive force) of the paper exerts a force on the panel to return it to the state before it was folded. Since the outer bottom panel connected to the front panel is folded inward, the outer bottom panel tends to generate an outward force. According to the present invention, the repulsive force acting on the outer bottom panel is blocked by the repulsive force blocking ruled line formed on the outer bottom panel in the longitudinal direction, so that the repulsive force is applied to the outer bottom panel beyond the repulsive force blocking ruled line. Hard to convey. At least the outward curvature of the outer bottom panel can be reduced, and the carton can be stabilized independently.

The repulsive force blocking ruled line is typically a push ruled line (unevenness extending linearly), with linear concave grooves on the outer surface of the outer bottom panel and corresponding linear ridges on the inner surface of the outer bottom panel. ， Each is formed.

In one embodiment, the repulsive force blocking ruled line is formed near the boundary with the front panel. It is possible to make it difficult for the repulsive force of the paper to be transmitted to a wide range of the outer bottom panel.

Preferably, the repulsive force blocking ruled line is formed on both sides of the center line that bisects the short sides on both sides of the outer bottom panel. The center line that bisects the short sides on both sides of the outer bottom panel is sandwiched between the two repulsive force blocking ruled lines. As mentioned above, the thin rectangular parallelepiped carton becomes unstable when the outer bottom panel bends (warps) outward (downward) when viewed from the side, but the two repulsive force blocking ruled lines sandwich the center line. Since the outer bottom panel is formed of, the range including the center line sandwiched by the two repulsive force blocking ruled lines protrudes outward and is less likely to be curved, thereby achieving self-sustaining stability. ..

The repulsive force blocking ruled line formed in the longitudinal direction of the outer bottom panel may be formed up to the short sides on both the left and right sides of the outer bottom panel (from end to end), or may be formed only near the short sides on both sides. You may.

In one embodiment, the long side of the rectangular inner bottom panel is connected to the lower edge of the short side of the back panel, and the inner bottom panel also has a repulsive force blocking ruled line extending in the longitudinal direction of the inner bottom panel. Has been done. The inner bottom panel can also be at least reduced inward curvature.

It is a pattern for a thin rectangular parallelepiped carton. It is a perspective view of a thin rectangular parallelepiped carton as seen from the bottom. It is an end view of the lower part of the thin rectangular parallelepiped carton along the line III-III of FIG. It is an end view of the lower part of the thin rectangular parallelepiped carton along the line III-III of FIG. It is a pattern of a thin rectangular parallelepiped carton of a modified example. It is a pattern of a thin rectangular parallelepiped carton of another modification. It is a pattern of a thin rectangular parallelepiped carton of another modification.

FIG. 1 shows a development view of a thin rectangular parallelepiped carton. FIG. 2 is a perspective view of a thin rectangular parallelepiped carton as seen from the bottom surface. FIG. 3 is an end view of the lower part of the thin rectangular parallelepiped carton along the line III-III of FIG.

The developed view 1A of FIG. 1 shows a cardboard pattern 1A forming a thin rectangular parallelepiped carton 1B (FIGS. 2 and 3), and shows an outer surface when assembled into the thin rectangular parallelepiped carton 1B. The alternate long and short dash line indicates a fold line that is folded into a mountain when assembling the thin rectangular parallelepiped carton 1B. In order to facilitate bending, squeeze processing is applied along this alternate long and short dash line.

The thin rectangular parallelepiped carton 1B shown in FIGS. 2 to 3 is produced by bending (die-cutting) the paper pattern 1A as shown in FIG. 1 and adhering (gluing) the necessary portions.

With reference to FIG. 1, the right side panel 11, the front panel 12, the left side panel 13, the back panel 14, and the glue margin panel 15 are arranged side by side. The right side panel 11, the front panel 12, the left side panel 13, the back panel 14, and the glue margin panel 15 are all higher in height (length in the vertical direction) than their width (length in the horizontal direction). It has a rectangular shape.

The outer top panel 21 is connected to the upper edge of the front panel 12, and the inner top panel 22 is connected to the upper edge of the back panel 14. The outer bottom panel 31 is connected to the lower edge of the front panel 12, and the inner bottom panel 32 is connected to the lower edge of the back panel 14. Flaps 41 are connected to the upper and lower edges of the left and right side panels 11 and 13.

Perforations (distanced) were formed at the boundary between the front panel 12 and the outer bottom panel 31 connected to the lower edge thereof, and the boundary between the back panel 14 and the inner bottom panel 32 connected to the lower edge thereof. A row of multiple holes) M is formed. The perforations M are formed to reduce the repulsion (force to return to the posture before folding) when the thick paper is folded. A half cut may be formed instead of the perforation M.

On the surface (outer surface) of the outer bottom panel 31 and the inner bottom panel 32, a linear repulsive force blocking ruled line 35 is formed in the longitudinal direction (the direction connecting the left and right short sides). The repulsive force blocking ruled line 35 is formed by a push ruled line (pressing the mold against the surface) in the direction from the outer surface to the inner surface of the paper pattern 1A, and is formed at the same time when the paper pattern 1A is die-cut. The depth of the repulsive force blocking ruled line 35 depends on the paper thickness, but for example, if the paper thickness is 400 μm, it is about 100 μm to 200 μm. The details of the repulsive force blocking ruled line 35 will be described later.

With reference to FIG. 3, the repulsive force blocking ruled lines 35 of the outer and inner bottom panels 31 and 32 are formed at the same positions when the outer and inner bottom panels 31 and 32 are overlapped with each other. The repulsive force blocking ruled line 35 has concave portions on the outer surfaces of the outer and inner bottom panels 31 and 32, and convex portions on the inner surface, respectively, and extends in the longitudinal direction of the outer and inner bottom panels 31 and 32. .. The repulsive force blocking ruled line 35 may be formed by a groove having an arc-shaped cross section as shown in FIG. 3, or may be formed by a groove having a triangular cross section as shown in FIG. 4, and the cross-sectional shape thereof is appropriately designed. be able to.

The thin rectangular parallelepiped carton 1B is assembled as follows. That is, the pattern 1A is folded at the boundary between the left side panel 13 and the back panel 14, and the boundary between the front panel 12 and the right side panel 11 is also folded. The overlapping glue margin panels 15 and the right side panel 11 are bonded to form a cylinder, and then the boxes are placed so that the angles between the adjacent panels are at right angles. A square tube with open top and bottom surfaces is created.

Fold the flaps 41 connected to the lower edges of the left and right side panels 11 and 13 at right angles inward, and then fold the inner bottom panel 32 connected to the lower edges of the back panel 14 at right angles inward. Finally, the outer bottom panel 31 connected to the lower edge of the front panel 12 is folded at a right angle inward, and the inner surface of the outer bottom panel 31 and the outer surface of the inner bottom panel 32 are bonded to each other. The bottom of the square tube is closed.

Contents such as pharmaceuticals, cosmetics, and confectionery are placed in the square tube from the upper surface to be opened, and then the upper surface opening is also closed. Similar to the process of closing the lower surface, the flaps 41 on the upper edges of the left and right side panels 11 and 13 are folded at right angles inward, and the inner top panel 22 on the upper edge of the back panel 14 is folded at right angles inward. Finally, the outer top panel 21 on the upper edge of the front panel 12 is folded at a right angle inward, and the inner surface of the outer top panel 21 and the outer surface of the inner top panel 22 are bonded to each other. The top surface of the square tube is closed, and the thin rectangular parallelepiped carton 1B is completed.

In a carton that is made three-dimensionally by folding a paper pattern, the elasticity (repulsive force) of the paper exerts a force on the panel to return it to the state before it was folded. Since the outer bottom panel 31 connected to the lower edge of the front panel 12 is folded inward, an outward force is generated. Since the inner bottom panel 32 connected to the lower edge of the back panel 14 is also folded inward, an outward force is generated. The outward force acts on the boundary between the front panel 12 and the outer bottom panel 31 and the boundary between the back panel 14 and the inner bottom panel 32. Since the outer and inner bottom panels 31 and 32 are adhered to each other, they tend to be curved in a direction that warps outward (downward) when viewed from the side.

With reference to FIGS. 2 and 3, the outer and inner bottom panels 31 and 32 constituting the bottom surface of the thin rectangular parallelepiped carton 1B are formed with a repulsive force blocking ruled line 35 extending in the longitudinal direction as described above. ， The repulsive force of the outward paper acting on the boundary between the front panel 12 and the outer bottom panel 31 and the boundary between the back panel 14 and the inner bottom panel 32 is blocked by the repulsive force blocking ruled line 35 and exceeds the repulsive force blocking ruled line 35. It becomes difficult to convey. The repulsive force is not transmitted or is difficult to be transmitted to the range of the outer and inner bottom panels 31 and 32 sandwiched by the two repulsive force blocking ruled lines 35.

The repulsive force blocking ruled line 35 is formed on both sides of the center line that bisects the short sides of the outer and inner bottom panels 31 and 32. The areas of the outer and inner bottom panels 31 and 32 extending in the longitudinal direction including the center line, which are sandwiched by the two repulsive force blocking ruled lines 35, are difficult to bend. The reason why the outer and inner bottom panels 31 and 32 become unstable due to the outward curvature is when the vicinity of the center line of the outer and inner bottom panels 31 and 32 protrudes most outward, so this is effective. The thin rectangular parallelepiped carton 1B can be stably and independently prevented.

The front edge of the lower edge of the outer bottom panel 31 and the repulsive force blocking ruled line 35, and the back edge of the lower edge of the back panel 14 and the repulsive force blocking ruled line 35 are outward (downward). Even if it is curved, the front panel 12 and the back panel 14 of the outer and inner bottom panels 31 and 32 are each curved outward, and the self-supporting stability is maintained in this case as well. The thin rectangular parallelepiped carton 1B can be stably and independently maintained for a long period of time. Since the outer curved bottom surface does not come into contact with the flat surface and destabilize the thin rectangular parallelepiped carton 1B, the thin rectangular parallelepiped carton 1B can be stably made to stand on its own.

In addition, since the ruled lines are formed on the outer and inner bottom panels 31 and 32, they are easy to design and manufacture, do not interfere with the print display, and have excellent design.

Further, since the thin rectangular parallelepiped carton 1B does not form a leg portion by using a notch, a gap (hole) is not formed due to the notch, and it is possible to prevent dust from entering the carton 1B.

The repulsive force blocking ruled line 35 may be formed at least on the outer bottom panel 31, and does not necessarily have to be formed on the inner bottom panel 32. However, it is preferable to form a repulsive force blocking ruled line 35 on the inner bottom panel 32 as well.

It is preferable to secure a distance of about 3 to 8 mm between the repulsive force blocking ruled line 35 and the lower edges (perforations M) of the front panel 12 and the back panel 14. For example, when the outer bottom panel 31 is folded inward at a right angle, it is prevented from being broken along the ruled line 35. Also, if it is too far away, the repulsive force blocking effect will be diminished, and this is to prevent this.

FIG. 5 shows a modified example, and shows a cardboard pattern 2A forming a thin rectangular parallelepiped carton. It differs from the pattern 1A shown in FIG. 1 in that three repulsive force blocking ruled lines 35 are formed on each of the outer and inner bottom panels 31 and 32. The number of repulsive force blocking ruled lines 35 can be arbitrarily designed.

FIG. 6 shows still another modification, and shows a cardboard pattern 3A forming a thin rectangular parallelepiped carton. The figure shows that the repulsive force blocking ruled lines 35 formed on the outer and inner bottom panels 31 and 32 are formed on the entire surface connecting the short sides of the outer and inner bottom panels 31 and 32 (from end to end). It is different from the pattern 1A shown in 1.

FIG. 7 shows still another modification, and shows a cardboard pattern 4A forming a thin rectangular parallelepiped carton. There is one repulsive force blocking ruled line 35 formed on the entire surface connecting the short sides of the outer and inner bottom panels 31 and 32, and this is the crease (perforation M) at the boundary between the front panel 12 and the outer bottom panel 31. It differs from the pattern 3A shown in FIG. 6 in that it is formed in a close position and in a position close to a crease (perforation M) at the boundary between the back panel 14 and the inner bottom panel 32. As described above, the repulsive force of the paper acts on the outer and inner bottom panels 31 and 32 at the boundary between the front panel 12 and the outer bottom panel 31 and the boundary between the back panel 14 and the inner bottom panel 32. A repulsive force blocking ruled line 35 is formed at a location close to (preferably at intervals such that the outer and inner bottom panels 31 and 32 are not accidentally broken along the ruled line 35 as described above). As a result, it is possible to make it difficult for the repulsive force to be transmitted to a wide range of the outer and inner bottom panels 31 and 32.

In the above-described embodiment, the linear repulsive force blocking ruled line 35 extending in the longitudinal direction is exemplified, but a repulsive force blocking ruled line having at least a partially bent or curved shape may be created. Further, the repulsive force blocking ruled line 35 extending in the longitudinal direction may be combined with a ruled line having a different direction (for example, horizontal H type, horizontal U type, etc.). Further, the repulsive force blocking ruled line 35 does not necessarily have to be a single line, and may be an intermittent line that is interrupted in the middle.

1A, 2A, 3A, 4A paper pattern 1B thin rectangular parallelepiped carton
31 Outer bottom panel
32 Inner bottom panel
35 Repulsive force blocking ruled line

Claims (4)

The long side of the outer bottom panel of the rectangle is on the lower edge of the short side of the rectangular front panel, and the long sides of the left and right side panels of the rectangle narrower than the front panel are on both sides of the long side of the front panel. A thin rectangular parallelepiped carton made from a pattern with a panel configuration in which the long sides of a rectangular back panel are connected to either side of the side panel.
On the outer bottom panel, a repulsive force blocking ruled line extending over the entire longitudinal direction is formed so as to connect the short sides on both sides of the outer bottom panel.
Self-supporting thin rectangular parallelepiped carton. The repulsive force blocking ruled line is formed near the boundary with the front panel.
The self-supporting thin rectangular parallelepiped carton according to claim 1. The repulsive force blocking ruled lines are formed on both sides of the center line that bisects the short sides on both sides of the outer bottom panel.
The self-supporting thin rectangular parallelepiped carton according to claim 1 or 2. The long side of the rectangular inner bottom panel is connected to the lower edge of the short side of the back panel.
The inner bottom panel also has a repulsive force blocking ruled line extending over the entire longitudinal direction so as to connect the short sides on both sides of the inner bottom panel.
The self-supporting thin rectangular parallelepiped carton according to any one of claims 1 to 3.

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