JPH0526026Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a corrugated cardboard box, and particularly to a corrugated cardboard box whose sealing adhesive tape can be easily peeled off.

[Conventional technology]

Conventionally, there is a cardboard box disclosed in Japanese Utility Model Application Publication No. 58-119522 as a cardboard box whose sealing adhesive tape can be easily removed.

As shown in FIGS. 6 and 7, the basic structure of this corrugated box 21 is that an inner flap 23 is connected to the upper edge of the opposite end wall 22 of a rectangular cylindrical body, and The outer flap 25 is connected to the upper edge, the inner flap 23 and the outer flap 25 are bent, the outer flap 25 is superimposed on the inner flap 23, and the distal edges of the abutted outer flaps 25 are attached to each other using adhesive tape 26. It was designed to be sealed. In this cardboard box 21, discontinuous cuts 2 are formed in the end wall 22 at a position away from the upper edge.
By providing a grip portion 28 formed by 7 and positioning the end of the adhesive tape 26 in the grip portion 28, when peeling off the adhesive tape 26,
Cut and raise the knob part 28 along the cut 27,
Together with the grip portion 28, the end portion of the adhesive tape 26 can be easily gripped.

[The problem that the idea attempts to solve]

However, when the tab 28 is pinched and the sealing adhesive tape 26 is pulled upward and peeled off, the adhesive tape 26 is firmly adhered between the end wall 22 and the inner flap 23 above the tab 28. As a result, as shown in FIG. 6, the surface layer paper of the corrugated cardboard forming the end wall 22 causes interlayer failure in the middle part, and the surface layer remains adhered to the back surface of the adhesive tape 26. Adhesive tape 2
It is torn off along with 6. In this way, the surface layer of the corrugated cardboard surface paper 29 constituting the end wall 22 is
When the adhesive tape 26 is peeled off together with the adhesive tape 26, the edge of the adhesive tape 26 that is adhered to the back surface of the cardboard box 21 moves from the upper edge of the end wall 22 to the outer flap 25 at the corner of the cardboard box 21. The surface layer of the facing paper 29 of the wall 22 must be broken. To do this, the sealing adhesive tape 26 must be pulled upwards with considerable force.

Therefore, even if the adhesive tape 26 is pulled off by pinching the tab 28, it will end up sticking to the upper edge of the end wall 22 of the cardboard box 21, that is, the upper corner of the cardboard box 21. There was a problem in that the adhesive tape 26 for sealing could not be peeled off smoothly, and the adhesive tape 26 would break and the end of the adhesive tape would have to be pulled up again with a nail or the like.

Therefore, with this invention, when the adhesive tape for sealing is peeled off by lifting the knob provided at a position away from the upper edge of the end wall, the adhesive tape for sealing is struck at the upper corner of the cardboard box. The purpose is to allow smooth peeling without getting stuck.

[Means to solve the problem]

In order to solve the above-mentioned technical problem, this invention has an inner flap connected to the upper edge of the opposite end wall of the rectangular cylindrical body, an outer flap connected to the upper edge of the opposite side wall, and at least A tab formed by a discontinuous cut in one end wall is provided at a position away from the upper edge of the end wall, and the inner flap and outer flap are bent to overlap the outer flap on top of the inner flap. , in a corrugated box whose outer flaps are sealed with adhesive tape so that the end of the adhesive tape is located at the tab, the surface paper of the corrugated box is placed along the upper edge of the end wall above the tab; To,
They created a cut with a width that matched the adhesive tape.

[Effect]

When the tab is lifted and the sealing adhesive tape is peeled off, the surface layer of the surface paper of the cardboard box that forms the end wall is adhered to the sealing adhesive tape and is peeled off. When the surface layer of the surface paper of the corrugated board that has been peeled off reaches the cut formed on the upper edge of the end wall, the surface layer of the surface paper of the corrugated board is cut by the cut.

〔Example〕 Next, an example of this invention will be described.

The cardboard box 1 has a structure in which an inner flap 13 is connected to the upper edge of the opposing end wall 12 of a square cylindrical body, and an outer flap 3 is connected to the upper edge of the opposing side wall 2. An adhesive tape 4 for sealing is applied to the abutted portion of the outer flap 3 to seal it. In addition, bottom flaps are provided on the lower surface of the body in a butting state, and the abutting portions of the bottom flaps are also sealed with adhesive tape 4 for sealing.

The application start or end position of the adhesive tape 4 for sealing is located at a part away from the upper edge of the end wall 12 of the cardboard box 1, and there is a tab 6 at that part.
is formed.

On the upper edge of the end wall 12 above the knob 6, there is a cut 10 having a width corresponding to the adhesive tape 4 for sealing.
is formed. The width of this cut 10 may be wider or narrower than the width of the adhesive tape 4 for sealing, but if it is too narrow, the edge adhered to the surface of the adhesive tape 4 for sealing will be damaged when the adhesive tape 4 is peeled off. Since this will interfere with the cutting of the surface layer of the surface paper of the wall 12, it is necessary to set the width to a value that does not interfere with the cutting of the surface layer of the surface paper of the end wall 12. The cut 10 may be a continuous cut or a discontinuous cut, and its depth may be determined so that it may or may not penetrate the cardboard forming the end wall 12 and may be bonded to the adhesive tape 4 for sealing. It may be deep enough to reach the surface layer of the cardboard surface paper that can be peeled off.

Next, the knob portion 6 may be formed so as to be surrounded by discontinuous score lines 5 as in the embodiment shown in FIGS. 1 to 3, or as shown in FIGS. 4 and 5. As in the example, it may be formed by a U-shaped cut line 5' that is open at the top.

In the embodiment shown in FIGS. 1 to 3, the discontinuous score line 5 forming the tab 6 is
It is constituted by a continuous cut which is open at the top and is formed so as to penetrate the corrugated cardboard constituting the end wall 12 of the board, and a perforation which connects the upper end of the continuous cut. In the case of this embodiment, in order to make it easier to pinch the knob part 6, two cuts are made at a position adjacent to the knob part 6, including a discontinuous score line 5 of the knob part 6 and a discontinuous score line 5 of the knob part 6. A push-in portion 8 is formed by the line 7. This cutting line 7
, similar to the discontinuous score line 5 described above, are formed so as to pass through the cardboard forming the end wall 12 of the cardboard box 1 . Furthermore, a bending line 9 may be provided in advance between the ends of the two cutting lines 7.

On the other hand, in the case of the embodiment shown in FIGS. 4 and 5,
Although the score line 5' forming the tab 6 is formed only in the surface paper of the corrugated cardboard forming the end wall of the corrugated cardboard box 1, it may be made to pass through the entire corrugated cardboard. In addition, in the case of this embodiment, the knob portion 6
In order to make it easier to pick up, it is desirable to provide a recess 11 in which the core of the cardboard is crushed below the score line 5'.

When opening the cardboard box 1 having the above structure, first pinch the tab 6 and pull it up, the surface layer of the cardboard box forming the end wall 12 will be adhered to the adhesive tape 4 for sealing. in,
It is peeled off together with the adhesive tape 4 for sealing. The surface layer of the corrugated paper that has been peeled off together with the sealing adhesive tape 4 is easily cut by the cut 10 when it reaches the cut 10 at the upper edge of the end wall.

[Effect of idea]

As described above, according to this invention, the adhesive tape 4 for sealing can be peeled off smoothly without hitting the upper corner of the cardboard box 1, so that the adhesive tape 4 for sealing can be peeled off smoothly. This has the effect of making work easier.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the first embodiment of this invention;
Fig. 2 is a partial cross-sectional view of the same as the above, Fig. 3 is a partial cross-sectional view showing the peeled state of the adhesive tape for sealing a cardboard box according to this invention, and Fig. 4 is a portion showing a second embodiment of this invention. FIG. 5 is a front view, FIG. 5 is a sectional view of FIG. 4, FIG. 6 is a partial sectional view of a conventional cardboard box with the adhesive tape for sealing it removed, and FIG. 7 is a perspective view of the conventional example. DESCRIPTION OF SYMBOLS 1... Cardboard box, 2... Side wall, 3... Outer flap, 4... Adhesive tape for sealing, 6... Knob part, 7... Cutting line, 8... Pushing part, 9... Bending line, 10...cut, 12...end wall, 13...inner flap.

Claims (1)

[Scope of utility model registration request] An inner flap is connected to the upper edge of the opposing end wall of the square cylindrical body, an outer flap is connected to the upper edge of the opposing side wall, and at least one end wall is formed by discontinuous cuts. The tab is provided at a position away from the upper edge of the end wall, the inner flap and the outer flap are bent, and the outer flap is superimposed on the inner flap so that the end of the adhesive tape is located at the tab. , a cardboard box whose outer flaps are sealed together with adhesive tape, characterized in that a cut with a width commensurate with the adhesive tape is formed in the surface paper of the cardboard along the upper edge of the end wall above the tab. cardboard box.