JP2016060509A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box having a fastening margin bonded with sufficient adhesive properties, even when a space exists in an upper part of the packing box.SOLUTION: A packing box 1 includes a body part 2 formed of corrugated fiberboard paper 4, and a closing part 3. The body part 2 is formed as follows: front and rear side wall plates 7 and 6 are raised; a top plate 8 is bent in parallel with a bottom plate 5; and a fastening margin 9 is bonded to the outside of the front side wall plate 7. An upper edge of the front side wall plate 7 is provided with a protrusion 13 protruding in its upward direction. The top plate 8 is provided with a fitting hole 14 into which the protrusion 13 is to be fitted.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging box formed of corrugated paperboard.

  2. Description of the Related Art Conventionally, a packaging box formed of corrugated cardboard is known which includes a main body composed of a bottom plate, two opposing side wall plates, and a top plate, and a closing portion that closes the left and right sides of the main body. (For example, refer to Patent Document 1).

  The main body portion, for example, has a front and rear side wall plate connected to the front and rear side edges of the rectangular bottom plate via a fold line, and a top plate connected to the front edge of the rear side wall plate via the fold line. It is formed by bending the plate parallel to the bottom plate, bending a stop margin continuously provided at the front end edge of the top plate via a crease line, and bonding it to the outer side surface of the front side wall plate.

  The closing part is a pair of inner flaps that are connected to each of the left and right side edges of the standing front and rear side wall plates via a crease line and bent inward, and a bottom plate and a top plate folded in parallel with the bottom plate. Are formed by bending each of the outer flaps connected to each of the left and right side edges through a crease line inward from the upper and lower sides and adhering the outer flaps to the inner flap.

JP 2014-105017 A

  However, according to the above-described conventional packaging box, when packaging a product filled in a squeeze bottle whose upper part is gradually narrowed, a larger space is generated in the packaging box as it is closer to the top plate of the packaging box. .

  For this reason, when bonding the stop allowance provided continuously to the top plate to the side wall plate, there is no support by the product from the inside, unlike the case of packaging a normal product having almost the same thickness up to the top. Therefore, the side wall plate is easily bent inward. Therefore, the stop allowance cannot be brought into close contact with the side wall plate with sufficient pressure, and the adhesion state becomes unstable, and sufficient adhesion may not be obtained.

  An object of the present invention is to provide a packaging box in which a stop margin is adhered with sufficient adhesiveness even when a space is present in the upper part of the packaging box in view of the problems of the related art.

  The packaging box of the present invention is a packaging box comprising a main body portion formed of corrugated paperboard and a closing portion that closes the left and right sides of the main body portion, and the main body portions are respectively disposed on the front and rear side edges of the rectangular bottom plate. Stand the front and rear side wall plates connected through the crease line, and fold the top plate connected to the front edge of the rear side wall plate through the crease line in parallel to the bottom plate, to the front edge of the top plate In the one formed by bending the stop margin provided continuously through the crease line and adhering it to the outer surface of the front side wall plate, a convex portion protruding upward is formed on the upper edge of the front side wall plate. And a fitting hole into which the convex portion is fitted is provided in the top plate.

  According to the present invention, when the top plate is bent parallel to the bottom plate, the convex portion of the front side wall plate is fitted into the fitting hole of the top plate. Thereby, the upper end part of a front side wall board will be in the state fixed to the plate | board surface direction with respect to the top plate. In this state, the stop margin is bent and bonded to the outer surface of the front side wall plate.

  At this time, since the upper end portion of the front side wall plate is fixed in the plate surface direction of the top plate, even if there is a space in the upper part of the packaging box, the stop margin does not cause the front side wall plate to bend, The front wall plate can be brought into close contact with a sufficient pressure. Therefore, the stop allowance can be bonded to the front side wall plate with sufficient adhesiveness.

  In this invention, it is preferable that the protrusion direction of the said convex part corresponds with the length direction of the center core of the said front side wall board. According to this, when the convex part of the front side wall plate is fitted in the fitting hole of the top plate, the convex part is more than the case where the protruding direction of the convex part and the direction of the center of the front side wall plate are vertical. Is reliably maintained by the core, and the upper end of the front side wall plate is more firmly fixed to the top plate. Accordingly, the stopper allowance can be bonded to the front side wall plate with higher adhesiveness.

It is a perspective view which shows the packaging box which concerns on one Embodiment of this invention. It is an expanded view of a packaging box. It is a perspective view which shows the state just before a top plate is bent in the case of formation of a packaging box. It is a perspective view which shows the state immediately after the top plate was bent in the case of formation of a packaging box.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the packaging box 1 of the embodiment is a rectangular parallelepiped wrap-around type, and includes a cylindrical main body 2 and a closing portion 3 that closes the left and right of the main body 2. As shown in FIG. 2, the packaging box 1 is assembled by corrugated paperboard 4 formed by punching cardboard base paper into a substantially rectangular shape.

  The corrugated paperboard 4 includes a rectangular bottom plate 5, a rear side wall plate 6 connected to the rear side edge of the bottom plate 5 via a fold line, and a front side connected to the front side edge of the bottom plate 5 via a fold line. A side wall plate 7 and a top plate 8 connected to the front end edge of the rear side wall plate 6 via a crease line are provided. Further, a stop margin 9 is continuously provided at the front end edge of the top plate 8 via a crease line.

  A pair of inner flaps 10 are connected to the left and right side edges of the front side wall plate 7 and the rear side wall plate 6 via crease lines. A pair of upper and outer flaps 11 are connected to the left and right side edges of the top plate 8 via fold lines, and a pair of lower and outer flaps 12 are connected to the left and right edges of the bottom plate 5 via fold lines.

  A convex portion 13 is provided at the leading edge of the front side wall plate 7 so as to project toward the leading edge. As shown in FIG. 2, the core of the corrugated paperboard 4 is cut in the vertical direction on the front side wall plate 7 so that the buckling strength against the vertical pressure of the packaging box 1 is increased. It is provided along. Therefore, the protruding direction of the convex portion 13 coincides with the length direction of the center of the front side wall plate 7.

  The top plate 8 is provided with a slit-like fitting hole 14 into which the convex portion 13 is fitted adjacent to the crease line 15 between the stopper allowance 9 and the top plate 8. Further, three convex portions 13 exist at equal intervals in a range excluding a predetermined range from both ends of the front end edge of the front side wall plate 7. The top plate 8 is provided with a fitting hole 14 at a position corresponding to each convex portion 13.

  The main body 2 raises the front side wall plate 7 and the rear side wall plate 6 connected to the bottom plate 5, and folds the top plate 8 connected to the rear side wall plate 6 in parallel to the bottom plate 5 to fit the convex portion 13. It is formed by fitting in the joint hole 14, and bending the stopper allowance 9 connected to the top plate 8 and bonding it to the outer surface of the front side wall plate 7.

  The closing portion 3 folds the inner flaps 10 of the standing front side wall plate 7 and the rear side wall plate 6 inwardly from each other and below the top and outer flaps 11 and 11 of the top plate 8 bent in parallel to the bottom plate 5. The outer flaps 12 are formed by bending the upper and lower inner flaps 10 from the upper and lower sides to overlap the outer flaps 10 and bonding the upper and outer flaps 11 and 12 to the respective inner flaps 10.

  When packaging a product that is filled in a squeeze bottle whose upper portion is gradually narrowed using the corrugated cardboard 4, the product to be packaged is first placed on the bottom plate 5 of the corrugated cardboard 4, 7 and the rear side wall plate 6 are raised.

  Next, each inner flap 10 is folded inward, each lower outer flap 12 is folded upward, and each lower outer flap 12 is bonded to the outside of the corresponding inner flap 10. Thereby, the corrugated paperboard 4 will be in the state shown in FIG. In FIG. 3, the illustration of the product is omitted. Thereafter, the top plate 8 is bent parallel to the bottom plate 5. As a result, as shown in FIG. 4, the protrusion 13 in a state of protruding upward from the upper edge of the front side wall plate 7 is fitted into the fitting hole 14.

  The upper and outer flaps 11 are bent and bonded to the corresponding inner flaps 10, and the stopper allowance 9 is bent and bonded to the front side wall plate 7. At this time, since the upper end portion of the front side wall plate 7 is fixed in the plate surface direction of the top plate 8 by the fitting of the convex portion 13 into the fitting hole 14, a certain amount is provided between the upper end portion and the upper portion of the product. Even in the case where there is a space, the upper end portion is not bent and the stop margin 9 is brought into close contact with the front side wall plate 7 with a sufficient force.

  Therefore, the stop margin 9 is adhered to the front side wall plate 7 with sufficient adhesiveness. Thereby, the packaging box 1 which has the main-body part 2 and the closure part 3 like FIG. 1 is formed, and packaging of goods is completed.

  As described above, according to the present embodiment, even when a product such as a squeeze bottle whose upper part is gradually narrowed is packaged, the stopper 9 is adhered to the front side wall plate 7 with sufficient force. For this reason, the stop margin 9 can be bonded to the front side wall plate 7 with sufficient adhesiveness.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this. For example, after the front side wall plate 7 and the rear side wall plate 6 are erected, the top plate 8 is bent and the stop margin 9 is bonded, and then the inner flap 10, the lower outer flap 12 and the upper outer flap 11 are bent, May be adhered.

  That is, after forming the main body part 2, the closing part 3 for closing the main body part 2 may be formed. Also in this case, when the top plate 8 is bent, the convex portion 13 of the front side wall plate 7 is fitted into the fitting hole 14 of the top plate 8, so that the stop margin 9 is secured with sufficient adhesiveness. Can be glued to.

  DESCRIPTION OF SYMBOLS 1 ... Packaging box, 2 ... Main-body part, 3 ... Closure part, 4 ... Corrugated paperboard, 5 ... Bottom board, 6 ... Rear side wall board, 7 ... Front side wall board, 8 ... Top board, 9 ... Stop margin, 10 ... Inner flap , 11 ... upper and outer flaps, 12 ... lower and outer flaps, 13 ... convex portions, 14 ... fitting holes.

Claims (2)

A packaging box comprising a main body formed of corrugated paperboard and a closing portion for closing the left and right of the main body,
A top plate in which the main body part stands up and down on the front and rear side walls connected to the front and rear side edges of the rectangular bottom plate via crease lines, and is connected to the front edge of the rear side wall plate via the fold lines. Is formed by bending the bottom plate parallel to the bottom plate, bending a stop margin continuously provided via a crease line on the top edge of the top plate, and bonding the same to the outer side surface of the front side wall plate.
On the upper edge of the front side wall plate, a convex portion protruding upward is provided,
A packaging box, wherein the top plate is provided with a fitting hole into which the convex portion is fitted. The packaging box according to claim 1, wherein a protruding direction of the convex portion and a length direction of a center of the front side wall plate coincide with each other.

Images