JP4848570B2 - Packaging box - Google Patents

Description

  The present invention is suitable for packaging vegetables such as long spring onions, in which the upper part of the rectangular tubular body is closed by four top flaps and the central part of the upper part of the trunk is opened in the closed state. Related to the packaging box.

  2. Description of the Related Art Conventionally, a rectangular tube-shaped body portion formed by four standing side plates and four top flaps connected to each other at the upper edge of each side plate via a fold line are closed by the top flaps. A corrugated packaging box is known in which the central part of the upper part of the trunk is opened in a state. This type of packaging box is used for packaging relatively long vegetables such as leeks, and is closed with the center of the upper part of the body open, so the contents can be easily opened from the outside. Can be confirmed.

  In this type of packaging box, each top flap is closed by folding it horizontally along the crease line of the upper edge of each side plate, but at this time, in order to maintain the closed state by each top flap, The overlapping portions of the top flaps positioned at the four corners are fastened using a connecting tool such as a staple or an adhesive tape. However, it is troublesome to separate the connecting tools such as staples and adhesive tapes when recycling the cardboard forming the packaging box.

Therefore, in recent years, a hug piece is provided on the pair of first top flaps facing one side, and the folded pieces are continuously provided at the tips of the pair of second top flaps facing the other side, extending from both sides of the folded pieces. A retaining piece is provided, the folded piece is folded back while the retaining piece is bent, the holding piece is held by the second top flap and the folded piece, and the folded piece is returned to prevent the folded piece from coming off. A packaging box is known (see, for example, Patent Document 1). According to this, since the folding state of each top flap is maintained without using a connecting tool such as a staple or an adhesive tape, it is advantageous for recycling and the like.
JP 2004-352354 A

  However, when the folded piece of the second top flap is folded, the folded piece and the retaining piece folded on the lower surface of the second ceiling flap cause the folded piece and the retaining piece and the lower surface of the first ceiling flap to be located inside the box. There is a step between them. This type of packaging box is first closed with the first and second top flaps and turned upside down, and vegetables such as long spring onions are introduced from the bottom of the open state, and the bottom flap is sealed. However, when vegetables that are relatively easily damaged, such as long spring onions, are introduced from the bottom of the open state, the vegetables that are in contact with the step formed on the inner side of the box are damaged. There are inconveniences that arise.

  Further, since this type of packaging box is opened with its center portion closed, only one first top flap or only one second top flap with the contents inside. In some cases, the packaging box is lifted by placing a hand on the open part. At this time, if the packaging box is lifted by carelessly placing a hand on the first top flap that does not include the folded piece, there is a disadvantage that the first top flap is distorted or cracked.

By eliminating such inconvenience, the present invention can maintain a closed state without using a coupling tool such as staples or adhesive tape, and distortion or damage of each top flap when the top flap is lifted with a hand. Another object of the present invention is to provide a packaging box that can prevent the vegetables as the contents from being damaged by reducing the level difference caused by the top flaps on the inside of the closed box.

In order to achieve such an object, the present invention provides a rectangular tube formed by a pair of rectangular first side plates that stand to face one side and a pair of rectangular second side plates that stand to face the other side. A pair of first top flaps connected to the upper edge of each first side plate via a crease line, and a pair of connecting to the upper edge of each second side plate via a crease line A second top flap, and both the first top flaps are folded horizontally along the fold line of the upper edge of the first side plate so that the first top flaps are spaced apart from each other and Covering, folding both the second top flaps horizontally along the crease line of the upper edge of the second side plate, and superimposing both corners of each second top flap on both corners of each first top flap, A second top flap covering the upper portion of the body with a gap between the first top flap and the second top flap; More top center portion of the body is closed in a state of being opened, the packaging box for packaging vegetables, the leading edge of the first top flap, a first folded piece continuing through the folding lines, the A pair of holding pieces extending along both sides of the first folded piece is provided, and after the first top flap is folded horizontally, the first folded piece is folded downward further on the lower surface of the first top flap. Superposed in a close contact state, provided a second folded piece that continues to the leading edge of the second top flap via a crease line, bent the second top flap horizontally, and then folded the second folded piece downward, The second heaven flap and the second folded piece are in close contact with each other, hold the holding piece, close the lid ,
When the first top flap and the second top flap are viewed from the inside with the top and bottom reversed, all the corner portions are removed by the first folded piece superposed on the first top flap and the second folded piece superposed on the holding piece. It is characterized by being formed flat at the same height over the circumference .

  According to the packaging box of the present invention, since the holding piece connected to the first top flap is closed by the second folded piece connected to the second top flap, the staple, the adhesive tape, etc. It is possible to maintain the closed state without using the connecting tool.

  In addition, the second top flap is superposed on the lower surface and the second folded piece holding it is superposed to obtain high strength. Distortion and damage of the second top flap when the box is lifted can be prevented. On the other hand, since the first top flap is folded down on the first folded piece provided between the holding pieces and overlapped with the lower surface of the first top flap, the strength of the first top flap is also improved. Further, it is possible to prevent the first top flap from being distorted or damaged when the packaging box is lifted by placing the hand on the closed first top flap.

In the closed state, on the inner side of the box, a step is formed between the second folded piece holding the holding piece and the lower surface of the first ceiling flap in a state of being superimposed on the holding piece. Since the first folded piece is superposed on the lower surface of the top flap, there is no difference in height between the second folded piece and the first folded piece when viewed from the inside of the box, and the level difference is extremely high. Since there are few states, the vegetable can be prevented from being damaged by the step between the top flaps on the inside of the closed box.

  In the present invention, the first folded piece includes a first convex portion projecting at a leading edge thereof, and the first convex portion is formed on the upper edge of the first side plate when the first folded piece is folded. Is formed, and the second folded piece includes a second projecting portion projecting at a tip edge thereof, and the second folded piece is folded at the upper edge of the second side plate. It is preferable that a second hole portion into which the second convex portion fits is formed.

  According to this, the overlapping state of the first folded piece on the lower surface of the first top flap is reliably maintained by the fitting of the first convex portion to the first hole portion, and the second hole of the second convex portion. The state where the holding piece is held by the second top flap and the second folded piece and is superposed by the fitting to the portion is reliably maintained. As a result, the first top flap and the second top flap are securely connected to each other, so that a strong closed state can be maintained without using a connecting tool such as a staple or an adhesive tape. Furthermore, even if the packaging box is lifted by placing a hand on either the first top flap or the second top flap, the first top flap or the second top flap can be prevented from being inadvertently detached. .

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory perspective view showing a packaging box of the present embodiment, FIG. 2 is a development view of the packaging box of the present embodiment, and FIGS. 3A and 3B are lids of the packaging box of the present embodiment. FIG. 4 is an explanatory view showing the main part of the packaging box of this embodiment.

  As shown in FIG. 1, the packaging box 1 of the present embodiment includes a rectangular tube-shaped body portion 2, a top portion 3 that closes the upper end of the body portion 2, and a bottom portion that closes the lower end of the body portion 2. 4 is formed in a rectangular parallelepiped shape, and has a shape suitable for packaging vegetables such as long onions as the contents by opening the central part of the top part 3 in the closed state.

  As shown in FIG. 2, the packaging box 1 has four side plates, that is, a pair of first side plates 5 and a pair of second side plates 6 alternately connected to each other via a fold line a. . Each of the side plates 5 and 6 is bent along the crease line a, and then an adhesive piece 7 connected to the edge of one of the second side plates 6 is bonded to the end of one of the first side plates 5. The body 2 (see FIG. 1) is formed. A first bottom flap 8 is connected to the lower end edge of each first side plate 5, and a second bottom flap 9 is connected to the lower end edge of each second side plate 6 via fold lines b and c, respectively. . The bottom flaps 8 and 9 are bent horizontally along the crease lines b and c to form the bottom portion 4 (see FIG. 1).

  Next, the structure of the top part 3 of the present embodiment according to the present invention will be described in detail. As shown in FIG. 2, a first ceiling flap 10 is connected to the upper end edge of each first side plate 5 via a crease line d. Similarly, each second side plate 6 has a crease line e. The 2nd top flap 11 is provided in succession through.

  The first top flap 10 is provided with a first folded piece 12 connected to the front end edge thereof via a fold line f, and a pair of holding pieces 13 extending along both sides of the first folded piece 12. Are connected. Further, a first convex portion 14 is formed at the tip edge of the first folded piece 12. As will be described later, the first convex portion 14 is fitted into the first hole portion 15 formed along the crease line d on the upper edge of the first side plate 5 when the first folded piece 12 is folded.

  A second folded piece 16 is connected to the second top flap 11 at the tip edge thereof via a crease line g. A second convex portion 17 is formed at the tip edge of the second folded piece 16, and this second convex portion 17 is formed on the second side plate 6 when the second folded piece 16 is folded as will be described later. It fits in the 2nd hole 18 formed along the crease line e of an edge.

  Next, the closing operation of the packaging box 1 having the above configuration will be described. The packaging box 1 of the present embodiment connects the edge of one second side plate 6 and the end of one first side plate 5 by the adhesive piece 7 to form each cylindrical body 2, and the bottom In a state where 4 is not formed (a state where it is not closed by the first bottom flap 8 and the second bottom flap 9), a lid closing operation is performed prior to storing vegetables such as long onions as contents.

  First, as shown in FIG. 3A, the first folded piece 12 is folded inward along the crease line f and superposed on the inner surface side of the first top flap 10. Next, the first ceiling flap 10 is bent so as to be perpendicular to the first side plate 5 along the fold line d, and is made horizontal. At this time, the first convex portion 14 of the first folded piece 12 is fitted into the first hole portion 15. Thereby, the superposition | polymerization state of the 1st folding | turning piece 12 to the inner surface (lower surface) side of the 1st top flap 10 is maintained reliably. Further, in this state, the top portion 3 has a shape in which the center portion is opened by the pair of first top flaps 10 and the holding pieces 13.

  Subsequently, as shown in FIG. 3B, the second top flap 11 is bent along the fold line e so as to be perpendicular to the second side plate 6, and is bent horizontally. Polymerize on the upper surface of both sides. Next, the second folded piece 16 is folded inward along the crease line g, and the holding piece 13 is held by the second top flap 11 and the second folded piece 16. At this time, the second convex portion 17 of the second folded piece 16 is fitted into the second hole portion 18. Thus, the state in which the holding piece 13 is held by the second top flap 11 and the second folded piece 16 and is superposed is reliably maintained. Thus, the packaging box 1 of the present embodiment can perform the lid closing operation very easily, and the first top flap 10 and the first top 10 are connected by fitting the second convex portion 17 into the second hole portion 18. Since the two top flaps 11 are securely connected, the closed state can be maintained without using a connecting tool such as a staple or an adhesive tape.

  Then, the accommodation operation | work of vegetables is performed in the trunk | drum 2 with which the top part 3 was closed. That is, although not shown, the body 2 with the top 3 closed is turned upside down, and a long onion or the like is introduced from the opened bottom side. At this time, as shown in FIG. 4 with the top and bottom inverted, the first top flap 10 and the second top flap 11 are shown from the inside, and the inner surface side of the first top flap 10 and the second top flap 11 is the first top flap 10. The first folded piece 12 that is superposed on the second piece and the second folded piece 16 that is superposed on the holding piece 13 have the same height over the entire circumference except for the corners. As a result, long leeks and the like are stably arranged inside the top portion 3, and there are very few portions where the steps are formed only at the corners, so that damage to the long leeks and the like is also prevented. Moreover, the first folded piece 12 and the second folded piece 16 are inadvertently formed by fitting the first convex portion 14 into the first hole portion 15 and fitting the second convex portion 17 into the second hole portion 18. Since the polymerization state is reliably maintained without swinging, it is also possible to stably arrange the long onions and the like, and to prevent damage to the long onions and the like.

  Next, after adding vegetables such as long onions, the bottom flaps 8 and 9 are folded horizontally along the crease lines b and c to form the closed bottom portion 4. Then, the bottom flaps 8 and 9 are sealed with staples, adhesive tape or the like, the body part 2 is inverted, and the top part 3 is directed upward to complete the vegetable storage operation.

  In the packaging box 1 of the present embodiment, the first folding piece 12 provided between the holding pieces 13 is superposed on the first top flap 10 in the closed state as described above, and the second top flap 11 is overlapped. Since the holding piece 13 and the second folded piece 16 are superposed and high strength is obtained, a hand is put on either the first top flap 10 or the second top flap 11 forming the top 3. Even if the packaging box 1 is lifted, inadvertent detachment, distortion, and damage of the first top flap 10 and the second top flap 11 can be prevented.

An explanatory perspective view showing a packaging box of one embodiment of the present invention. The expanded view of the packaging box of this embodiment. Explanatory drawing which shows the lid closing operation | work of the packaging box of this embodiment. Explanatory drawing which shows the principal part of the packaging box of this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Packaging box, 2 ... Trunk part, 5 ... 1st side plate, 6 ... 2nd side plate, 10 ... 1st top flap, 11 ... 2nd top flap, 12 ... 1st folding piece, 13 ... Embrace piece, 14 ... 1st convex part, 15 ... 1st hole part, 16 ... 2nd folding | turning piece, 17 ... 2nd convex part, 18 ... 2nd hole part.

Claims (2)

A rectangular tube-shaped body portion formed by a pair of rectangular first side plates standing opposite to one side and a pair of rectangular second side plates standing opposite the other, and on each first side plate A pair of first top flaps connected to the edge via a crease line, and a pair of second top flaps connected to the upper edge of each second side plate via a crease line. By folding the flap horizontally along the fold line of the upper edge of the first side plate, the first top flaps cover the upper portion of the trunk with a gap between them, and both the second top flaps are attached to the second side plate. Bending horizontally along the crease line of the upper edge and superimposing both corners of each second top flap on both corners of each first top flap, the second top flaps are spaced apart from each other The upper part of the trunk is covered with the upper part of the trunk and the upper central part of the trunk is opened by both first and second top flaps. It is closed, in the packaging box for packaging vegetables,
Provided at the leading edge of the first top flap is a first folded piece continuous through a fold line and a pair of holding pieces extending along both sides of the first folded piece, and the first top flap is horizontally disposed After folding, the first folded piece is further folded downward and polymerized in close contact with the lower surface of the first ceiling flap,
A second folded piece is provided at the front edge of the second top flap via a crease line, the second top flap is folded horizontally, and then the second folded piece is folded downward to form the second top flap and the second top flap. The two folded pieces are in close contact with each other, and the hug pieces are held and closed .
When the first top flap and the second top flap are viewed from the inside with the top and bottom reversed, all the corner portions are removed by the first folded piece superposed on the first top flap and the second folded piece superposed on the holding piece. A packaging box characterized by being formed flat at the same height over the circumference . The first folded piece includes a first convex portion protruding at a leading edge thereof, and the first convex portion is fitted to the upper edge of the first side plate when the first folded piece is folded. A hole is formed,
The second folded piece includes a second convex portion projecting at a tip edge thereof, and the second convex portion is fitted to the upper edge of the second side plate when the second folded piece is folded. The packaging box according to claim 1, wherein a hole is formed.

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