JPS63218039A - Packaging structure of product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) This invention relates to a packaging structure for a product that uses a cardboard box and a cushioning member to package the product.

(Prior Art) When transporting a microwave oven from a factory, the main body 2 (corresponding to the product) is placed inside a cardboard box 1 as shown in FIG. l
It is common practice to house and package the cushion together with the shock cushion 3. This protects the main body 2 from the outside world.

Specifically, as shown in FIG.
In addition to forming lines a and 5b, parallel folding lines 6a along the width direction are formed.
, 6b, 6c are formed.

A cutting line 7 is provided at the end of each folding line 6a to 6C, and a pair of inner flaps 9.9 of the same thickness are provided on the body 8.
, a deployment structure is used forming a pair of outer flaps 10.10, an inner flap 9°9 at the bottom and an outer flap 10.
．． By sealing 10, inner flaps 9, 9,
It constitutes an entrance/exit side with an outer flap 10°10.

Then, the main body 2 is placed in the cardboard box 1 together with the cushion 3.3 on the lower side, and then the cushion 3.3 is set on the exposed corner side of the upper part of the main body, and then the inner flaps 9, 9 and the outer flap 10. Fold 10 inward,
This is done by sealing the flaps that overlap on the cushion 3.

By the way, as shown in FIGS. 6(a) to 6(C), the cardboard box 1 used for such packaging first folds the inner flaps 9, 9 inward, and then folds the outer flaps 10.
10 is bent inward to close the opening of the cardboard box 1. However, since each of the inner and outer flaps 9.10.10 is bent on the same folding line 5a, the outer flap 10.1
When the inner flap 9 is folded into a horizontal state, the inner flap 9 tilts diagonally downward.

That is, as shown in FIG. 6(a), the inner flap 9
When folded inward, the tip of the inner flap 9 is placed above the folding line 5a, for example at a position of +X# (
(depending on the rigidity of the corrugated board 4). However, as the outer flap 10 on the same folding line 5a is folded inward as shown in FIG. and become approximately the same position. After that, when the outer flap 10 is completely folded horizontally, the upper surface of the outer flap 10 is now located on the folding line 5a, and the base of the inner flap 9 is pressed by an amount equivalent to the thickness of the outer flap 10. go. At this time, due to the rigidity of the cardboard, the inner flap 9 tilts diagonally downward from the folding line 5a, for example, to a point at minus xm, as shown in FIGS. 6(C) and 8(a). It ends up.

Therefore, in packaging using such a cardboard box 1, the height of the cushion 3 has traditionally been lowered by the slope of the inner flap 9 so that the top surface of the cardboard box 1 is horizontal when packaging is completed. This makes it easy to stack the packed cardboard boxes 1 (otherwise the outer flaps 10, 10 would swell).

However, since the inner flap 9 is inclined, the folding line 5
There is usually an inner flap 9 between a and the inner flap 9.
A gap δ corresponding to the plate thickness is formed.

(Problems to be Solved by the Invention) The occurrence of such a gap δ causes so-called box collapse when the cardboard boxes 1 are stacked up for storage in a warehouse.

In other words, as shown in Fig. 8(b), the box collapse occurs when the product that should receive the stacked load F directly on the main body 2 receives the stacked load F through the gap δ and then receives it on the main body 1. hand,
This is because the entire cardboard box is pushed down by the gap δ. Specifically, as shown in FIG. 9, the body 8 (side wall) is distorted, causing the corrugated box 1 to swell, resulting in the box being crushed.

Such box collapse causes instability when the cardboard boxes 1 are stacked in multiple stages.

The present invention focuses on these problems and provides a packaging structure for products.

[Structure of the Invention] (Means and Effects for Solving the Problems) This invention provides the following advantages by making the thickness t1 of the inner flap 9°9 of the cardboard box 1 thinner than the thickness t2 of the outer flaps 10, 10. By using the thin walls of the inner flaps 9, 9 and the fact that the inner flaps 9, 9 are easily displaced, the buffer member 3° inner flaps 9. The three parts of the outer flap 1o are made to overlap.

(Example) The present invention will be described below based on an example shown in FIGS. 1 to 3. However, in FIGS. 1 to 3, the same parts as those described in the "Prior Art" section will be given the same reference numerals and their explanation will be omitted, and in this section, different parts will be described.

That is, in one embodiment, as shown in FIG. 1, the thickness t1 of the pair of inner flaps 9.9 provided in the opening is made thinner than the thickness t2 of the outer flaps 10.10.

Specifically, only the inner flap 9.9 is made thinner than the other parts of the corrugated board by using a printing roller that is normally used when manufacturing corrugated board.

For example, as shown in FIG. 2, a pair of upper and lower rollers 1
The inner flap part is made thinner by using a printing system made of 5.15 iLJ.

Specifically, among the upper rubber rollers 15a and 15b constituting the roller part 15.15, a rubber plate (not shown) for mold plate making is attached to the downstream rubber roller 15b in the conveying direction of the cardboard, and the upstream rubber roller 15a A structure is adopted in which a rubber plate 16, 16 for crushing the cardboard is attached at a position corresponding to the portion where the upper and inner flaps 9, 9 are formed. In other words, as the cardboard is transported,
First, the inner flap 9 of the corrugated board 4 is pressed with the rubber roller 15a.
, the pressing force is applied only to the 9th part, crushing the steps in that part. Thereafter, the rubber roller 15b is used to print the necessary printing on the packaging box on the surface of the corrugated board 4, whose thickness has been reduced at the inner flap portion.

When packaging the main body 2 of the microwave oven, first, a cardboard box 1 as shown in FIG. 4 is assembled from the cardboard plates 4. The main body 2 is placed together with the lower cushion 3.3 in the cardboard box 1 thus assembled. Then, the upper cushion 3.3 is set on the corner side of the main body 2, as described in the section ``Prior Art''. The height of the cushion 3.3 is reduced by the thickness of the inner flap 9. Next, fold the inner flap 9°9 inward, then fold the outer flap 10°10 horizontally inward to close the entrance/exit opening and seal it with sealing tape (not shown) or the like. Then, the packaging will be finished.

In this packaging process, since the inner flap 9 is made thinner than the outer flap 10, a gap δ is created between the horizontal outer flap 10 and the cushion 3 directly below it. There isn't.

That is, since the inner flap 9 is not easily displaced (has a weak stiffness), as the outer flap 10 is bent to approximately the same position as the bending line 5a, the base of the inner flap 9 is pushed. As shown in FIG. 3, deformation occurs at the root portion of the inner flap 9 and the inner flap 9 is displaced to a horizontal state, and both the inner flap 9 and the outer flap 10 overlap in a horizontal state.

However, it can be seen that the stacked load F can be uniformly received by the main body 2 through the top surface of the horizontal cardboard box 1. Of course, since the inner flap 9.9 at the bottom of the cardboard box 1 is thin, it goes without saying that this also applies to the bottom.

Therefore, even if products are stored (warehoused) by stacking, it is possible to eliminate the occurrence of boxes collapsing (due to the bulging phenomenon) that occurs in the past, and products can be stacked stably in multiple tiers. (Because the inclination of the cardboard box 1 in the upper section is reduced).

Moreover, since the thickness of the inner flap 9 is thinner, the packaging volume is smaller (the height dimension is smaller), and when stacking in multiple stages, an increase in the number of stacked stages can be expected.

In addition, in one embodiment, the packaging of a microwave oven was given as an example, but it goes without saying that the present invention can also be applied to packaging of other products.

[Effects of the Invention] As explained above, according to the present invention, the opening of the corrugated board can be closed by overlapping the inner flap and the outer flap on the cushioning member without creating a gap.

Therefore, it is possible to prevent the cardboard boxes from being crushed due to stacking, and it is possible to stably stack the cardboard boxes by uniformly receiving the stacking load.

Moreover, since the thickness of the inner flap becomes thinner, the number of stacked stacks can be expected to increase.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention.
Figures (a) and (b) are a developed view and a side view showing the structure of the cardboard box, which is the main part, Figure 2 is a perspective view showing a device for reducing the thickness of the inner flap, and Figure 3 is a side view showing the structure of the cardboard box. A cross-sectional view showing the state in which the inner flap and outer flap are folded, Fig. 4 is a perspective view showing a packaging structure using a general cardboard box and cushioning material, and Figs. 5 (a) and (b) are the cardboard boxes. A developed view and a side view of the box, FIGS. 6(a) to (C) are perspective views showing the packaging procedure, FIG. 7 is a perspective view showing the appearance of the cardboard box after packaging, and FIG. 8(a) ) is a sectional view showing the gap created around the inner flap of the cardboard, Figure 8(b)
9 is a sectional view showing a state in which a load is applied to the product due to stacking, and FIG. 9 is a perspective view showing the collapse of the cardboard box caused by the load. 1...Cardboard box, 2...Main product), 3...
Cushion (buffer member), 9...inner flap, 10.
・Outer flap. Applicant's agent Patent attorney Takehiko Suzue (a) (b) Figure 1 Figure 3 Figure 5 (a> (b) (c) Figure 6 Figure 7

Claims (1)

[Claims] A cardboard box having inner flaps at opposite ends of the opening and outer flaps at the remaining end is provided, a product is placed in the cardboard box, and a cushioning member is set on the product.
A product packaging structure in which an inner flap and an outer flap are folded inward in order to close the opening of a cardboard box, wherein the inner flap is thinner than the outer flap. packaging structure.