JPS594911Y2 - cardboard box - Google Patents

Description

[Detailed description of the invention] In this invention, the side plates 1, 1' are formed by a two-layer corrugated board 2 consisting of an inner liner 15, a center liner 14, an outer liner 13, and a core 2', 2''. ' is extended to form the opening/closing plates 3, 3', the central liner 14 and the outer core 2'' are cut in the middle of the opening/closing plates 3, 3', and the outer liner 13 is extended without being cut. inner core 2
This invention relates to a corrugated cardboard box in which the outer liner of the outer core 2'' is attached in a stepped manner to the cut edge 5' of the outer core 2''.

The side plates 1 and 1' are bent at 90° with the vertical folding line 6 as the border,
The bottom plate 10 is formed by a rectangular plate 12.12' which is obtained by bending the same side plates 1, 1' by 90 degrees along the transverse folding line 11.11'.

The two-layer corrugated board 2 has three layers of liners 13, 14.15 and a core 2r between the liners 13°14 and 14.15,
This is a double-sided corrugated board made of 2tr.

The outer layer formed by the outer liner 13, the central liner 14 and the "inner core 2" is approximately 3 mm thick;
The inner layer formed by the inner liner 15, the center liner 14 and the core 2' has a thickness of about 4.5 mm.

The horizontal folding lines 4 and 4' are formed by uneven lines formed by pressing the two-layer corrugated board 2, and the rectangular board 12 forming the bottom board 10
．． The horizontal folding lines 11 and 11' of 12' and the vertical folding lines 6 are also formed by pressing uneven lines.

The rectangular plates 12.degree. 12' of the bottom plate 10 are formed of a two-layer corrugated board 2, as shown in FIG.

In addition, what is indicated by 5'' in the figure is a pressing portion by a wheel.

Therefore, by bending the horizontal and vertical folding lines 4, 6, 11 to form a rectangular cardboard box, opening and closing the opening/closing plates 3, 3' allows items to be stored inside, packed, and stacked for handling or transportation. .

In order to increase the stacking strength of conventional corrugated boxes, two-layer corrugated boards (
A double flute (that is, a double-sided corrugated board) was used as it was, and two-layer corrugated boards were used not only for the side panels but also for the rectangular plate forming the bottom plate and the opening/closing plate forming the top surface.

However, the pressure strength due to the stacking of cardboard boxes is borne by the side plates, and has nothing to do with the bottom plate and the top opening/closing plate.

However, when stacked in a disorderly manner, the load of the stacked cardboard is applied to the rectangular plate forming the top or bottom surface or the opening/closing plate, resulting in damage or deformation of the opening/closing plate or square plate.

In this case, as mentioned above, the side panels 1 and 1 are made of two-layer corrugated board 2.
Since there is no risk of the load strength being reduced by ', and the opening/closing plates 3, 3' are formed of the inner liner 15, inner core 2', and outer liner 13, the material and weight of the corrugated board can be saved and the cost can be reduced. Not only can it provide a corrugated box with high loading strength, but also the opening/closing plate 3 with horizontal folding curves 4, 4'
Since the center core 14 and the outer core 2'' are slightly extended 5'' and cut to the middle of the 3' side, a horizontal two-layer corrugated band is formed at the base of the opening/closing plates 3, 3', and the cardboard boxes are stacked. Even if the opening/closing plates 3, 3' and the extension part 5 are slightly shifted, the horizontal 2
The opening/closing plate 3 is created by the cooperation of the corrugated cardboard strip and the side plates 1 and 1'.
, 3' can be prevented from being damaged, and a safe cardboard box can be provided at a low cost.

In addition, the outer liner 13 is extended without being cut and attached as an outer liner to the inner center 2', and the liner 13 is attached in steps to the cut edge 5' of the extension part 5, so that a good-looking box can be obtained. Obtainable.

[Brief explanation of the drawing]

Fig. 1 is a cutaway perspective view showing the cardboard box of the present invention, Fig. 2 is a vertical sectional view of the same corrugated box, Fig. 3 is a partially enlarged longitudinal sectional view of Fig. 2, and Fig. 4 is the same as Fig. 3. 5 is a cross-sectional view taken along line A--A in FIG. 2.

Claims (1)

[Scope of utility model registration request] The side plates 1, 1' are connected to the inner liner 15, the center liner 14,
It is formed by a two-layer corrugated board 2 consisting of an outer liner 13 and a center core 2', 2'', and the same side plates 1, 1' are extended to form opening/closing plates 3, 3'. The central liner 14 and the outer core 2'' are cut in the middle, and the outer liner 13 is extended without being cut and pasted as the outer liner of the inner core 2', and this is cut into the outer core 2''. A cardboard box made of tiered 5' edges.