JP6045391B2 - Cardboard box opening structure and cardboard box - Google Patents

Description

  The present invention relates to an opening structure of a cardboard box sealed with a tape attached to a butting portion of a pair of openable and closable flaps covering an upper surface opening, and a cardboard box provided with the opening structure.

  Corrugated cardboard boxes used for the transportation and storage of goods are covered with a pair of flaps whose upper surface opening can be opened and closed after the goods are stored inside, and tape is attached to the butted parts of both flaps. Sealed. For opening the sealed cardboard box, a method of forcibly peeling the end of the tape with a nail or the like, or cutting the tape along the abutting portion of the flap with a cutter knife or the like has been adopted.

  However, the above-described opening method has a problem that workability is poor and opening cannot be performed easily.

  Therefore, Patent Document 1 proposes an unsealing structure as shown in FIG. That is, FIG. 5 is a perspective view of a cardboard box having an opening structure proposed in Patent Document 1, and the opening of the cardboard box 101 shown in FIG. It is made by cutting along the cutting line and pulling off the tape 103 with this knob piece 102A. According to this, the tape 103 can be easily peeled off to open the cardboard box 101 with good workability, and the hole 105 formed in the cardboard box 101 after opening can be used as a handle.

Utility Model Registration No. 3057683

  However, in the opening structure shown in FIG. 5 proposed in Patent Document 1, since the hole 105 is opened in the cardboard box 101 after opening, there is a problem that the compressive strength of the cardboard box 101 is lowered.

  The present invention has been made in view of the above problems, and the object of the present invention is to provide a cardboard box in which the cardboard box can be easily opened by easily peeling the tape without reducing the compressive strength of the cardboard box. It is an object of the present invention to provide an unsealing structure and a cardboard box having the unsealing structure.

  In order to achieve the above object, the invention according to claim 1 is constituted by corrugated paper having a surface liner attached to the surface of a corrugated core, and the upper surface opening is covered with a pair of foldable flaps, The unsealing structure of the corrugated cardboard box, which is sealed by sticking tape to the butt of both flaps, is cut into a closed shape on the front liner of the side surface of the corrugated cardboard box to which the longitudinal end of the tape is stuck. And an end portion of the tape is adhered to a knob portion surrounded by the cut.

  According to a second aspect of the present invention, in the first aspect of the present invention, at least one of the left and right cuts that are inserted into the front liner on the side surface of the cardboard box is inclined with respect to the vertical direction.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1 or 2, a mark indicating a place to be pressed is displayed on an outer portion of the side notch of the cardboard box. .

  A cardboard box according to a fourth aspect is provided with the opening structure according to any one of the first to third aspects.

  According to the first aspect of the present invention, when the cardboard box is opened when the cut portion on the side surface of the cardboard box is pressed, the front liner of the portion is cut along the cut, and the cut portion of the liner and the other portion Since a gap is formed between the tab and the finger, insert the tip of the finger into the gap, pinch the knob on the front liner, and pull it in the direction to peel off the pinched knob, the knob will be cut along the notch. Separated from the core. Therefore, by holding and pulling the tab portion from which the front liner is cut, the tape having one end in the longitudinal direction attached to the tab portion can be easily peeled off with good workability, and the cardboard box can be easily opened. . In this case, in the cardboard box, only the knob part which is a part of the liner is cut off, and the through hole is not opened, and the other part including the core remains as it is, so the compressive strength of the cardboard box is lowered. There is nothing.

  According to the second aspect of the present invention, since at least one of the left and right cuts to be inserted into the front liner on the side surface of the corrugated cardboard box is inclined with respect to the vertical direction, There is always a portion where the corrugated crest of the core is not bonded, and when the vicinity of the notch is pressed, the surface liner at that portion is separated from the center core, and a gap is generated between the surface liner and the center core. Therefore, you can put your finger in the gap to securely peel off the tab of the front liner from the center core, and pinch the tab to easily peel off the tape to easily open the cardboard box with good workability. Can do.

  According to the invention described in claim 3, since the place to be pressed on the side surface of the cardboard box is indicated by the mark, if the operator presses the mark part without hesitation when opening the cardboard box, the table of the part is displayed. The liner is cut along the incision to create a gap between the core and the finger can be put into the gap to securely peel off the knob portion.

  According to the fourth aspect of the present invention, it is possible to obtain a cardboard box that can be easily opened by peeling off the tape without causing a decrease in compressive strength. .

It is a perspective view of the cardboard box provided with the opening structure concerning the present invention. It is the A section enlarged detail drawing of FIG. (A) is the BB sectional drawing of FIG. 2, (b) is CC sectional view taken on the line of FIG. (A)-(e) is explanatory drawing which shows the opening procedure of a cardboard box. It is a perspective view of a cardboard box provided with the opening structure proposed in patent documents 1.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view of a cardboard box having an opening structure according to the present invention, FIG. 2 is an enlarged detail view of a part A in FIG. 1, and FIGS. 3 (a) and 3 (b) are the BB line and C-- in FIG. FIG.

  A corrugated cardboard box 1 shown in FIG. 1 is formed into a hollow rectangular parallelepiped shape by corrugated paper 2 shown in FIG. 3, and its upper surface opening is a pair of left and right rectangular plates that can be bent around the long side of the opening. Is opened and closed by a flap (lid) 1a. Here, as shown in FIG. 3, the corrugated paper 2 constituting the corrugated cardboard box 1 is constructed by attaching the front liner 2b and the front liner 2c, which are thin paper, to the front and back surfaces of the corrugated core 2a. Has been.

  Thus, the cardboard box 1 accommodates a product (not shown) in its interior, and then, as shown in FIG. 1, the left and right flaps 1a are folded to close the upper surface opening, and the tape 3 is put on the butted portion of both flaps 1a. Although it seals by sticking, the longitudinal direction both ends of the tape 3 are stuck over the both side surfaces 1b before and behind the cardboard box 1.

  Thus, in the present embodiment, as shown in FIG. 2, a cut-out a is put in a closed shape on the front liner 2b of the side surface 1b to which the longitudinal end of the tape 3 of the cardboard box 1 is stuck. An inverted trapezoidal knob portion 2A is formed, and an end portion of the tape 3 is adhered to the knob portion 2A. Here, the left and right cuts a1 of the cuts a that define the knob portion 2A are inclined with respect to the vertical direction. In addition, a mark 4 indicating a place to be pressed is displayed on an outer portion of the cut 1a on the side surface 1b where the knob portion 2A of the cardboard box 1 is formed (in the illustrated example, an outer portion of the right oblique cut 1a). ing. It should be noted that characters that prompt pressing such as “push” and “PUSH” may be written in the mark 4 portion.

  Next, the opening operation | work of the corrugated cardboard box 1 sealed as shown in FIG. 1 is demonstrated below according to FIG.4 (a)-(e).

  FIGS. 4A to 4E are explanatory views showing the procedure for opening the cardboard box. When the cardboard box 1 is opened, the mark 4 shown in FIG. 4A displayed on the side surface 1b of the cardboard box 1 is shown. Press the part. Then, a part of the knob portion 2A of the front liner 2b of the cardboard paper 2 is cut along the oblique cut a1, and the cut portion is cut off from the core 2a as shown in FIG. A gap δ is generated between them. Here, since the cut a1 of the front liner 2b is inclined with respect to the vertical direction, the range of the diagonal cut a1 (the range S shown in FIG. 3) includes a wavy peak of the front liner 2b and the core 2a. There is always a place where is not bonded. For this reason, when the location where the mark 4 outside the notch a1 is displayed is pressed, the front liner 2b at that location is cut off from the central core 2a, and a gap δ is always generated between the front liner 2b and the central core 2a. To do. In this case, since the location to be pressed is indicated by the mark 4, the operator can press the optimal location without hesitation.

  Thus, as described above, the knob portion 2A formed on the front liner 2b of the side surface 1b of the cardboard box 1 is cut along a part of the cuts a1, and in this portion, between the front liner 2b and the core 2a. When a gap δ is generated as shown in FIG. 4 (b), as shown in FIG. 4 (c), when a finger is inserted into the gap δ and the knob portion 2A of the front liner 2b is picked up, The knob portion 2A is cut along the notch a and is peeled off from the core 2a as shown in FIG. If the grip 2A is pulled from this state and pulled, the tape 3 is peeled off from the cardboard box 1 as shown in FIG. 4 (e), and the cardboard box 1 is opened and accommodated in the cardboard box 1. You can take out the goods you have.

  As described above, according to the opening structure of the present invention, it is possible to easily open the cardboard box 1 by peeling off the tape 3 for sealing the cardboard box 1 with good workability. 1, only the knob portion 2A, which is a part of the front liner 2b of the corrugated cardboard 2 constituting this, is cut off from the core 2a, and a through hole is not opened in this, but other cores 2b including the core 2b Since the portion remains as it is, a decrease in the compressive strength of the cardboard box 1 can be prevented.

1 Corrugated box 1a Corrugated board is this flap 1b Side of corrugated box 2 Corrugated paper 2A Knob 2a Center of corrugated paper 2b Front liner of corrugated paper 2c Back liner of corrugated paper 3 Tape 4 Marking a Cut a1 Diagonal cut δ Gap

Claims (3)

Consists of corrugated paper with a front liner attached to a corrugated core pile, covered the top opening with a pair of openable and closable flaps, and sealed with tape attached to the butt of both flaps Cardboard box opening structure,
A trapezoidal cut is formed in a closed shape on the front liner of the side surface to which the longitudinal end of the tape of the cardboard box is attached, and an end of the tape is inserted into a knob portion surrounded by the trapezoidal cut. It is composed by sticking
At least one side of the left and right sides of the trapezoidal cut is an oblique cut that is inclined with respect to the direction of the peak of the core ,
A cardboard box opening structure , wherein a horizontal width of the diagonal cut is equal to a distance between the crests of the core . Wherein the outer portion of the oblique cut, open structure of the cardboard box according to claim 1 Symbol mounting, characterized in that displaying indicia indicating where to press. Cardboard box, characterized in that it comprises the opening arrangement according to claim 1 or 2.

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