JPH0415635Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is used to improve bliss-type packaging boxes, especially as an alternative to plastic boxes used as pass-through boxes for paper milk cartons, etc., and is a stackable and disposable packaging box. This relates to cardboard packaging boxes.

Problems to be solved by conventional techniques and ideas Conventionally, stackable plastic boxes have been used to transport and store beverage containers such as paper milk cartons, but they are expensive and difficult to collect and clean. There were some troublesome flaws.

Therefore, packaging boxes made of cardboard were considered, but they were difficult to stack, and the upper boxes tended to fall into the lower boxes, causing the upper boxes to easily fall over.

The present invention provides a bliss-type cardboard packaging box that is inexpensive, disposable, and suitable for stacking.

Means for Solving the Problems In order to achieve the above object, the cardboard packaging box of the present invention is provided with standing side plates 2, 2 on both sides of the bottom plate 1, as shown in the drawings, and the bottom plate 1 and the side plates 2 A main panel A having a joint piece 3 at each end thereof, and a pair of side panels B, B which are fixed to each joint piece 3 and close the space between the side plates 2, 2.
In the Bliss type cardboard packaging box formed from the above, the inner diameter of the upper opening 4 of the box is larger than the outer diameter of the box bottom 10 of the bottom plate 1, and the upper end 5 of each side panel B is horizontally The upper edge 5 of the side panel B is formed by folding back and fixing the upper end 5 to the inner surface using the half-cutting edge line 6 from the outer surface side.
is formed lower than the upper edge 21 of each side plate 2.

Embodiment An embodiment of the invention is shown in FIGS. 1-5. This example cardboard packaging box has main panel A
and two side panels B.

The main panel A includes a bottom plate 1, side plates 2, 2 that stand up on both sides of the bottom plate 1 through fold lines 11, 11, and fold lines 12, 12, and 22 on both ends of the bottom plate 1 and the side plates 2, respectively.
It consists of joint pieces 3 that are connected via 22. The side panel B is fixed by folding the upper end 5 toward the inner surface by a half-cutting edge line 6 horizontally applied to the upper end 5 from the outer surface side, and also has a handle hole 7.
The hole is reinforced by forming the hole at a position where the upper end 71 approaches the lower edge of the upper end portion 5 which is folded back and fixed. Note that the half-cutting edge line is a cutting edge line in which a cut is made in one liner paper and core paper of a double-sided corrugated board, but the cut does not extend to the other liner paper. Corrugated board with half-cut edges can be easily bent 180° using liner paper that does not extend beyond the cut lines, and a double cross section can be formed at the fold. Further, the pair of side panels B, B are fixed to each joint piece 3 to close the space between the side plates 2, 2, and form a box. In the box body, the inner diameter of the upper opening 4 is larger than the outer diameter of the box bottom 10 of the bottom plate 1.

Further, the upper edge 6 of the side panel forms a double cross section of the cardboard folded back along the half-cutting edge line, and is formed lower than the upper edge 21 of each side plate 2.

Function and Effects of the Invention In the packaging box of the present invention, when the boxes are stacked, the inner width of the upper opening 4 is wider than the outer width of the box bottom 10, so the bottom of the upper box can be easily inserted into the upper edge of the lower box. In addition to being able to be fitted, the outer periphery of the upper box bottom 10 is surrounded by the side plates 2, 2 and the joint pieces 3, 3, 3, 3 of the lower main panel A, preventing the box from falling over. be done. Further, since the upper edges 6, 6 of the side panels B, B are folded back by the half-cutting edge line to form a double cross section of the cardboard, the upper box is prevented from falling into the lower box.

In addition, the packaging box of the present invention can be manufactured at a low cost, is disposable, and does not require the effort of collection or cleaning, so it is suitable for containers containing beverages, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIGS. 2 and 3 are front and side views showing the state of use, and FIGS. 4 and 5 are main panels and side panels. FIG. 1... Bottom plate, 10... Box bottom, 2... Side plate, 2
1...2 upper edge, 3...joint piece, A...main panel, B...side panel, 4...box upper opening,
5...B upper end, 6...B upper edge (half cutting edge line).

Claims (1)

[Scope of utility model registration request] A main panel A is provided with standing side plates 2, 2 on both sides of the bottom plate 1, and a connecting piece 3 is provided at each end of the bottom plate 1 and the side plate 2, and a main panel A that is fixed to each connecting piece 3 and is connected between both side plates 2, 2. In a Bliss-type cardboard packaging box formed from a pair of side panels B and B that close the box, the inner diameter of the upper opening 4 of the box is
The bottom plate 1 is formed larger than the outer dimension of the box bottom 10, and the upper end 5 is formed by a half-cutting edge line 6 horizontally applied to the upper end 5 of each side panel B from the outer surface side.
A packaging box made of corrugated cardboard, characterized in that the upper end 6 of the side panel B is formed lower than the upper edge 21 of each side plate 2 by folding and fixing the side panel B to the inner surface side.