JP2007253995A - Non-staple sealing case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-staple top-face sealing case used for a conveyance of fresh agricultural products. <P>SOLUTION: A packing box keeps the top face sealed so as to have an opening in its center so that top-faced short-flaps 10, 11, 12, and 13 extended from upper edges of front and back side-plates and left and right side-plates are overlapped. Folding-back flaps 16 and 17 are continuously arranged at free ends of any each pair of top-faced short-flaps via narrow and parallel folds, and insertion projections 18 and 19 are arranged on pointed heads of the folding-back flaps. Broken lines 20 and 21 such as slits (straight cuts) or half-cut lines capable of hooking the insertion projections are provided in a position parallel to the interconnecting folds on side plates in the vicinity of interconnecting folds of the top-faced short-flaps. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a non-staple sealing case used for transporting agricultural products such as vegetables and flowers.

  Conventionally, as shown in FIG. 6, an exterior box for transporting fruits and vegetables has been used. This exterior box is made of corrugated cardboard, and the pair of long side plates 51 and short side plates 52 form side walls of the box 4. And the bottom of the box is closed by fixing each pair of long and short bottom plates extended from the lower edge of the long side plate 51 and the short side plate using a fastener or tape, and the upper edges of the long side plate 51 and the short side plate By overlapping the short top surface short flaps 53 and 54 (sometimes simply referred to as short flaps) that extend from the inside, an annular shape having an opening that enables insertion and confirmation of fruits and vegetables is formed inside. A top seal was formed.

The short flaps 53 and 54 have a particularly strong repulsion at the proximal fold due to the shortness and the thickness of the material. Therefore, the staples 55 are driven by a boxer instead of a plug-in type and fixed.
However, when staples are used as described above, handling of a heavy boxer becomes a burden at the time of assembly, and there is a risk that the operator may be injured by the staples flying off at the time of disassembly.

Therefore, a corrugated cardboard box that does not require fixing means such as the above-described fasteners and tapes and is easy to assemble has been proposed as shown in Patent Documents 1 and 2, for example. Patent Document 1 is a fruit and vegetable storage box that uses insertion holes and insertion pieces for sealing the bottom surface and the top surface. In addition, in Patent Document 2, each pair of end plates and side plates are connected to form an angular peripheral wall, and a long flap extending from the lower edge of each end plate and side plate is overlapped to close the bottom surface. In addition, the short flap box is suitable for transporting agricultural products that are sealed with the end portions of the short flaps extending from the upper edges of the end plates and side plates overlapped and opened in the middle portion of the top surface.
JP 2001-278244 A JP 2005-126109 A

During the distribution of fruits and vegetables, there may be a cargo handling operation for grasping the top flap of the box for the inspection and inspection of the fruits and vegetables. In such a case, as described in Patent Document 2, in the case where the end portions of the short flaps extending from the upper edges of the end plate and the side plate are overlapped without using staples, the sealing is performed when the top surface flap is grasped. It is difficult to maintain the state and it is easy to come off.
On the other hand, as in Patent Document 1, in a box using an insertion hole and an insertion piece, it is necessary to make a hole in the blank, remove the punching scraps, and form the insertion hole and the insertion piece and insert at the time of assembly This causes disadvantages such as troublesome engagement.
The present invention solves the conventional problems and provides a non-staple top surface sealing case used for transporting fresh produce including flowers.

In order to solve the above-mentioned problem, the first invention uses a corrugated cardboard as a raw material, and has a short top surface short flap extended from the upper edge of the front and rear side plates and the left and right side plates so as to have an opening at the center. A packaging box whose top is sealed,
Folding flaps are connected to the free ends of any one of the pair of top surface short flaps via narrow parallel folds, and an insertion protrusion is provided at the tip of the folding flaps.
On the other hand, the side plate near the connecting fold of the top surface short flap is provided with a slit (straight cut) or a break line such as a half-cut line at a position parallel to the connecting fold so as to latch the insertion protrusion. This is a packaging box characterized by that.

The second invention is a packaging in which the top surface is sealed so as to have an opening in the center by superimposing a short top surface short flap extended from the upper edges of the front and rear side plates and the left and right side plates, using cardboard as a material. A box,
Folding flaps are connected to the free ends of any one of the pair of top surface short flaps via narrow parallel folds, and an insertion protrusion is provided at the tip of the folding flaps.
On the other hand, the side plate in the vicinity of the connecting fold of the top surface short flap is provided with a recessed portion that engages with the insertion protrusion by locally crushing the inside of the side plate at a position parallel to the connecting fold. This is a characteristic packaging box.

  According to a third aspect of the present invention, the breaking line or the recessed portion is provided on a side plate along the connecting fold of the top short flap corresponding to the length and thickness width of the insertion protrusion. The packaging box according to any one of 1 and 2.

  A fourth invention is a non-staple sealed box that closes the bottom of the box by fixing each pair of long and short bottom plates extended from the lower edges of the front and rear side plates and the left and right side plates using a tape or hot melt adhesive. It is a packaging box of the 1st or 2nd invention which is.

  According to a fifth aspect of the present invention, a bottom plate having a rectangular shape is formed in the center of the blank, left and right side plates are connected to both long sides of the bottom plate via folds, and left and right sides are connected to both short sides of the bottom plate via folds. It is a packaging box of the 1st or 2nd invention formed by arranging a side board continuously.

  In such a packaging box, by simply folding the folded flap connected to the free end of the top short flap inward, the insertion protrusion provided at the tip of the folded flap is the connecting fold of the top short flap. Since it is caught in a slit provided in a nearby side plate or locked in a recess near the connecting fold, the sealed state can be maintained without using a sealing material such as staples.

  In the packaging box of the present invention, since the insertion hole is not opened in the blank, the appearance is beautiful, and it is not necessary to take out the cut-out residue, and the sealing material such as staples is not used. Troubles are also prevented.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawing shows a cardboard box that can be suitably used as a leek packaging box.

As shown in the blank of FIG. 1, this cardboard box has a pair of long side plates 1, 3 and short side plates 2, 4 constituting the front, back, left and right side surfaces alternately arranged on the outer edge of one long side plate. A passage piece 5 is provided continuously. Further, bottom flaps 6, 8 or 7, 9 for sealing the bottom surface are connected to the lower edges of the long side plates 1, 3 and the lower edges of the short side plates 2, 4, respectively.
Top face short flaps 10 to 13 are connected to the upper edges of the pair of long side plates 1 and 3 and short side plates 2 and 4, respectively. The top short flaps 10 and 12 connected to the long side plates 1 and 3 are formed with substantially U-shaped notch openings 14 and 15 at the center of the top surface, and connected to the short side plates 2 and 4. Folding flaps 16 and 17 are connected to the free ends of the top short flaps 11 and 13 through narrow parallel folds, and insertion protrusions 18 and 19 are provided at the tips of the folding flaps.

  The folded back flaps 16 and 17 protrude in a convex shape with respect to the top short flaps 11 and 13. The base end ruled lines of the folding flaps 16 and 17 are folds parallel to the connecting folds of the top short flaps 11 and 13. The folded flaps 16 and 17 are folded into the openings 14 and 15 provided in the top short flaps 10 and 12 connected to the long side plates 1 and 3 at the time of assembly, and as shown in FIGS. 10, 12 and 11, 13 are combined, and the top surface is sealed so as to have an opening at the center.

On the other hand, parallel slits (straight cuts) 20a, which can hook the insertion protrusions 18 and 19 of the folded flaps 16 and 17 folded inside the top short flaps 11 and 13 on the upper side of the side plates 2 and 4, respectively. 20b, 21a, and 21b are formed on the connecting fold line or at a position slightly lower than the connecting fold line, and are provided corresponding to the length and thickness width of the insertion protrusions 18 and 19.
These parallel slits 20a, 20b, 21a and 21b can be formed so as to penetrate the side plates 2 and 4. However, as illustrated in (d) of FIG. You may form with the half cut line | wire which cut into about half the depth.

  The parallel slit is formed so that one of the two slits (preferably one on the lower side) penetrates the side plates 2 and 4 and the other one is formed as a half-cut line. As shown in FIG. 3 (A to D), the insertion protrusion provided at the front end of the folded flap is simply folded into the openings 14 and 15 provided to be connected to the free end of the top surface short flap. Since the space between the two parallel slits swells outward and deforms, the insertion protrusions 18 and 19 of the folding flaps 16 and 17 are caught by the recess H formed between the parallel slits and locked. Therefore, even if a sealing material such as staples is not used, the insertion piece is prevented from coming out when the top surface flap is gripped, and the sealed state can be maintained.

  In addition, as shown in FIG. 4, a concave portion with which the insertion protrusion is engaged may be formed by pressing between the parallel slits 20 a and 20 b and locally crushing the step of the cardboard. Even in this case, the insertion protrusions 18 and 19 are caught in the recesses formed by locally crushing the steps, and when the top flap is gripped without using a sealing material such as staples. Therefore, it is possible to prevent the inserted piece from coming out and maintain the sealed state.

  To assemble the blank of FIG. 1, as shown in FIG. 2, the pair of long side plates 1, 3 and the short side plates 2, 4 are bent so as to form a square tube, and the passage piece 5 is attached to the short side plate 4. Form a peripheral wall. Next, the top short flaps 10 and 12 connected to the long side plates 1 and 3 are folded inward, and the folded back flaps 16 and 17 are then folded inside the top side short flaps 11 and 13 on the short side plates 2 and 4. The top surface is sealed so as to have an opening at the center. Then, the leeks are stored in the box, and the bottom flaps 6, 7, 8, and 9 are sequentially bent inward and fixed with adhesive tape or the like to close the bottom surface.

  In this way, the insertion protrusion provided at the front end of the folding flap is caught by the slit provided on the side plate near the connecting fold of the top short flap, or is caught by the recess near the connecting fold, so that it is locked. Even if the sealing material is not used, the sealed state can be maintained.

  In addition to simply disengaging the insertion protrusion from the slit or recess, it can be easily opened and disassembled. Trouble does not occur due to the sealing material.

In addition, this invention is not limited to said Example. FIG. 5 is a corrugated cardboard blank showing a modification of the present invention. This corrugated cardboard box has a rectangular bottom plate 30 formed at the center of the blank, and left and right side plates 31 through folds on both long sides of the bottom plate. 32, and left and right side plates 32, 33 are connected to both short sides of the bottom plate through folds.
Also in this modified example, only by folding the folding flap connected to the free end portion of the top surface short flap inward, the insertion projections 38, 39 provided at the tips of the folding flaps 36, 37 become the top surface short flap. Since it is caught in the slits 40 and 41 provided on the side plate near the connecting fold, or is locked in the recess near the connecting fold, the sealed state can be maintained without using a sealing material such as staples. Can do.

a is a figure which shows the blank of the box based on one Embodiment of this invention, b is an enlarged view of the principal part. a is the assembly state same as the above, b is a perspective view which shows the middle of an assembly. a is explanatory drawing which shows the formation state of a parallel slit, b is explanatory drawing which shows the engagement state of an insertion protrusion and a slit. Explanatory drawing showing cardboard It is a figure which shows the blank of the modification of this invention. A perspective view showing a sealed state of a conventional short flap box

Explanation of symbols

1, 3 Long side plate 2, 4 Short side plate 5 Passage piece 6-9 Bottom flaps 10-13, 32-35 Top short flaps 14, 15 Openings 16, 17, 36, 37 Flap flaps 18, 19, 38, 39 Insertion protrusion 20a, 20b, 21a, 21b Parallel slit H Concave part

Claims (5)

A packaging box in which the top surface is sealed so as to have an opening in the center by superimposing a short top surface short flap extended from the upper edges of the front and rear side plates and the left and right side plates, using cardboard as a material,
Folding flaps are connected to the free ends of any one of the pair of top surface short flaps via narrow parallel folds, and an insertion protrusion is provided at the tip of the folding flaps.
On the other hand, the side plate near the connecting fold of the top surface short flap is provided with a slit (straight cut) or a break line such as a half-cut line at a position parallel to the connecting fold so as to latch the insertion protrusion. A packaging box characterized by that. A packaging box in which the top surface is sealed so as to have an opening in the center by superimposing a short top surface short flap extended from the upper edges of the front and rear side plates and the left and right side plates, using cardboard as a material,
Folding flaps are connected to the free ends of any one of the pair of top surface short flaps via narrow parallel folds, and an insertion protrusion is provided at the tip of the folding flaps.
On the other hand, the side plate near the connecting fold of the top surface short flap is provided with a recess that engages with the insertion protrusion by locally crushing the inner side of the side plate at a position parallel to the connecting fold. And packaging box. The break line or the recessed portion is provided on a side plate along the connecting fold of the top surface short flap corresponding to the length and thickness width of the insertion protrusion. Packaging box as described in. 4. A non-staple sealed box that closes the bottom of the box by fixing each pair of long and short bottom plates extended from the lower edges of the front and rear side plates and the left and right side plates with a tape or a hot melt adhesive. A packaging box according to claim 1. A rectangular bottom plate is formed in the center of the blank, left and right side plates are connected to both long sides of the bottom plate through folds, and left and right side plates are connected to both short sides of the bottom plate through folds. The packaging box according to any one of claims 1 to 3.

Images