JPS597254Y2 - Cushioning material for packaging - Google Patents

Description

[Detailed description of the invention] This invention relates to a cushioning material for packaging using a cardboard sheet.

Traditionally, packaging cushioning materials have mostly been made of foamed plastics such as expanded polystyrene and expanded polyethylene, which require molds to make into products. However, the disadvantage is that the mold cost per product (mold cost divided by the number of products manufactured) is expensive.

On the other hand, even if the material is manufactured by cutting it manually without using a mold, the processing time will be longer and the cost will also be higher.

The present invention was made in order to eliminate the drawbacks of the conventional products as described above, and provides an inexpensive packaging cushioning material having a cushioning support structure by assembling corrugated cardboard sheets by folding them into a mold. It's mejiroki.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 is a developed view of one embodiment of the present invention, and 1 is actually a
When this cushioning material is applied to the packaged item, a part of the packaged item comes into contact with the plate, 2 is a corner reinforcing material that will be used later in the explanation of FIG. 3, and 3 to 34 are the corners of the packaged item ( 35-42 are insert pieces for inserting into the punching grooves 43-50, 51-82 each indicate a fold line, and 83
-85 indicates a cutting line.

The width of the punched grooves 43-50 is slightly longer than the width of the insert pieces 35-42.

FIG. 2 is an assembled view of one corner of the corrugated cardboard sheet cut and marked with fold lines as shown in FIG. 1.

Fold the fold lines 52, 53, 54, 55, 56, 57, and 58 inward (valley fold), and fold the fold line 51 outward (mountain fold).

The insertion piece 35 is inserted into the punching groove 43, and the corner reinforcing plate 7 is bent so as to be sandwiched between the corner reinforcing plates 4 and 6.

Insert the insertion piece 36 into the punching groove 44.

The assembly process is performed in the order of E → 口 → C in Figure 2.

As described above, the buffer legs A are integrally formed with the backing plate part 1 at the corners of the backing plate part 1.

Hereinafter, in the same manner, the other three corner shock absorbing legs B, C, and D
Assemble.

As shown in Figure 3, the four corner reinforcing plates 2 at the center of the expanded view in Figure 1
are cut along cutting lines 83 to 85 to obtain these corner reinforcing plates 2,
If 2, 2.2 is attached to the corner, it will be more effective in protecting the packaged item.

As described above, according to the present invention, a packaging material having a cushioning support structure can be made from a single corrugated sheet, and an inexpensive cushioning material can be obtained.

Furthermore, since this product is entirely made of cardboard, when it is no longer used and is incinerated, it does not emit toxic gas or black smoke like other plastic packaging materials, making it excellent for disposal. .

In particular, according to the present invention, the shock-absorbing legs formed at each corner of the backing plate have a triple-plate structure, which provides a high shock-absorbing effect and strong strength. Since it is assembled using the engagement structure of the insert piece and the punched groove, there is no need to use adhesive methods, and assembly is simple.

[Brief explanation of the drawing]

The figure shows an example of this invention, and Figure 1 is a developed view;
Figures 2A, 2C and 2C are assembly views showing the assembly process, and Figure 3 is a completed assembly view. In the figure, 1...Packing plate part, 2...
Corner reinforcement plate, 6, 15, 22.31...First corner support plate, 8.13, 24.29...Second corner support plate, 7, 14, 23 .30...Third corner support plate, 9,12,25.28...Fourth corner support plate, 10,11,26.27...Fifth corner support plate, 5, 16, 21. 32...6th corner support plate, 4.17, 20.33...7th corner support plate, 3.18, 19.34...8th corner support plate Corner support plate, 35, 38, 39.42...first insertion piece,
36. 37, 40. 41... Second insertion piece, 43, 47, 50.46... First punching groove, 44, 48, 49.45... Second punching groove,
51-82... Broken line, 83-85...
Cutting lines A, B, C, D... These are the buffer legs. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A piece of corrugated cardboard sheet is cut and bent so that each square of the rectangular backing plate 1 has cushioning legs that support the corners of the packaged item. a pair of first and second corner support plates 6, 8, 15, 13, 22, each of which is valley-folded on each side corresponding to the vicinity of the corner of the backing plate portion 1;
24, 31. 29 respectively, and a third corner support that is valley-folded and has first insertion pieces 35.38, 39.42 on the corner side of one of the second corner support plates 8, 13, 24.29. The plates 7, 14, 23, 30 are further valley-folded to the non-corner side with a fourth corner support plate 9, 12, 25, 28, and a second insert that is valley-folded with respect to this corner support plate. Piece 36, 37
, 40.41, the fifth corner support plate 10, 11, 2
6.27, respectively, and is valley-folded on the non-corner side of the other first corner support plate 6, 15, 22.31.
Insert pieces 35 , 38 , 39 . 42 are inserted into the first punching grooves 43 , 47 , 50 . 6th with 46
Corner support plates 5, 16, 21. 32, and the second insertion piece 36 that is valley-folded with respect to this corner support plate and on the mountain-fold side thereof.
, 37, 40, 41 are inserted into the second punching groove 44,
7th corner support plate 4.17,2 with 48,49.45
0.33, and an eighth corner support plate 3.18, 19.34 which is mountain-folded with respect to this corner support plate, respectively, and the third corner support plate is shaped like the first and seventh corner support plates. The first to seventh corner support plates are each valley-folded so that the upper corner support plates are sandwiched by the second and fifth corner support plates, and the upper eighth corner support plate is sandwiched by the second and fifth corner support plates. , each of the eighth corner support plates is mountain-folded, and the first insertion piece is inserted into the first punching groove, and the second insertion piece is inserted into the second punching groove. A cushioning material for packaging, characterized in that the cushioning legs are inserted into the respective cushioning legs.