JPH0630037U - palette - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pallet composed mainly of paper, which is more excellent in compression resistance against load, bending strength, and impact strength. [Arrangement] In a pallet to which a square tube girder 3 formed by bending a corrugated cardboard into a square tube shape is attached, an opening 7 is provided on a side wall of the square tube girder 3, and the sheets are polymerized and bonded in an upright state. A paper core or corrugated cardboard laminate 9 having a large number of holes (cells) formed therein is inserted into the square tubular girder through the openings so that the axis of the cell is orthogonal to the surface of the top plate 1 to be integrated. At the same time, the reinforcing plate 6 is arranged at an inner diagonal position of the square tubular girder in which the paper core or the corrugated cardboard laminate is not inserted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pallet used for transporting or transferring loads, and particularly to a pallet mainly made of paper which is lightweight and has excellent impact strength and compression strength.

[0002]

[Prior art]

 Although pallets made of metal, wood, or plastic have long been known, they are heavy and difficult to handle, so in recent years, pallets with relatively light loads, pallets with a short period of use, and disposable pallets have been used. In addition, pallets made of corrugated cardboard and paper tubes have begun to be used for export packaging.

In general, pallets are required to have basic functions such as compression resistance against load, impact strength, bending strength, etc., and to be able to be recovered after use and reused or recycled. Conventional paper pallets are excellent in that they are light in weight and do not require special treatment after use, but they are satisfactory in terms of load resistance to compression, bending strength, and impact strength. It wasn't something. In addition, conventional paper pallets are difficult to manufacture and have problems in workability, and many are difficult to mass produce and mechanize.

[0004]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide a paper pallet that has appropriate strength as a pallet, is easy to manufacture with a simple structure, and is lightweight and inexpensive.

In view of the above-mentioned problems of the conventional paper pallet, the present applicant first folds both ends of the corrugated ball sheet to form a pair of left and right square tubular portions, and the longitudinal direction inside each of the square tubular portions is described. A pallet girder material with diagonally extending X-shaped reinforcing ribs and at least one pair of girder materials are arranged in parallel, and the deck material is placed on at least one side so as to straddle these girder materials. We proposed a pallet with plates (Japanese Patent Application No. 3-75589).

The present invention further improves on the above-mentioned prior invention, and presents a pallet composed mainly of paper, which is more excellent in terms of resistance to compression under load, bending strength, and impact strength. .

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pallet of the present invention is a rectangular tube formed by bending corrugated cardboard into a rectangular tube shape at least at both ends of the back of a top plate made of corrugated cardboard or paperboard. A pallet with attached girders, which is a stack of paper cores or corrugated cardboard in which openings are provided in the side walls of square tubular girders, and a number of holes (cells) are formed by polymerizing and adhering the paper upright. The cell is inserted into the rectangular tube girder through the opening so that the axis of the cell is orthogonal to the surface of the top plate, and integrated, and at the inner diagonal position of the rectangular tube girder in which the paper core or the corrugated cardboard laminate is not inserted. The gist is that a reinforcing plate is provided.

[0008]

【Example】

 Next, one embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing the entire pallet of the present invention, FIG. 2 is an exploded view, and FIG. 3 is a partial perspective view showing a part of a reinforced beam member. In FIG. 1, reference numeral 1 is a top plate formed in a rectangular shape, 2 is a luggage placed on the top plate, and 3 is a square-tube-shaped girder provided on the back surface of the top plate. The square tube girders 3 of this embodiment are attached along both ends of the top plate 1, but depending on the size of the pallet, the square tube girders (not shown) may be provided in the middle of the right and left square tube girders. 1) or more than one may be provided.

As shown in FIGS. 1 and 2, it is preferable that the left and right rectangular tube girders 3 are formed by extending the left and right of the top plate 1 and bending the extending members thereof into a rectangular tube shape. For example, as shown in the development view of FIG. 2, a plurality of parallel ruled lines 4 are engraved on each of the upper and lower extension members of the top plate 1 to partition the four side walls 5a, 5b, ... , 6 are provided in series while one or a plurality of openings 7, 7 are formed in a part of the side wall. The reinforcing plates 6 and 6 are provided with slits 8 along the longitudinal direction from both ends toward substantially the center. At the time of assembly, the four side walls provided on both sides of the top plate 1 are bent into a square tube shape through the ruled lines 4, and then one surface of the side wall is fixed to the back surface of the top plate with an adhesive to fix the square tube girders 3. Further, the reinforcing plates 6, 6 are formed by diagonally bending and arranged at diagonal positions inside the square tubular girder 3.

The top plate 1 and the square tube girders 3 are formed by using corrugated board, paperboard, etc. In this embodiment, double-sided corrugated board of A and A stages is used.

A paper core or corrugated cardboard laminate 9 in which a large number of holes (cells) are formed by polymerizing and adhering paper in a standing state to the openings 7 and 7 provided on the side walls of the square column girder is attached to the cells. Insert so that the axis is perpendicular to the surface of the top plate and integrate with an adhesive (see FIGS. 3 to 6). The paper core mentioned here is a paper core for a panel in which a large number of holes (cells) are formed by polymerizing and adhering the paper in an upright state (for example, a through hole formed in a honeycomb shape, an S shape, or a polygonal shape). Stuff). As the corrugated board, it is possible to use a double-sided double-sided corrugated board (so-called triwall corrugated board) having A, A, and A stages that is polymer-bonded and cut according to the size of the opening.

FIG. 7 shows an internal reinforcing plate 10 to be used in combination with the reinforcing plate 6. Like the reinforcing plates 6 and 6, a slit 11 is provided in the longitudinal direction from both ends toward substantially the center. . A plurality of the reinforcing plates 10 are prepared and inserted into the inside of the rectangular tube girder 3 through the slits 11 so as to intersect with the reinforcing plates 6 and 6 and arranged at diagonal positions of the rectangular tube girder. In this way, both reinforcing plates are arranged inside the rectangular girder so as to have an X shape and used.

As for the mode of use, as shown in FIG. 1, luggage (packaging box, etc.) may be placed directly on the top plate 1 of the pallet of the present invention, but as shown in FIG. Alternatively, a corrugated board or a paperboard 20 may be attached separately. Further, as shown in FIG. 8 (b), it is also possible to reverse the top and bottom and separately attach a cardboard, a paperboard 21, etc. to the upper side for use.

The pallet having the above-described structure is light in weight, has a simple structure, is easy to manufacture, is inexpensive, and is excellent in that no special consideration is required for treatment after use. Excellent basic performance such as compression resistance, impact strength, and bending strength. To verify this, the product of the present invention was subjected to a drop impact test and a compression test, and the following results were obtained.

Test Method The structure of the sample pallet is as follows. The pallet of the present invention has the structure shown in FIGS. 1 and 2, and the top plate and the square tube girders are formed by using a double-sided corrugated board of A and A stages. The vertical and horizontal dimensions of the top plate 1 were 600 mm, and the vertical and horizontal dimensions of the square tubular girder were 90 mm. In addition, an opening having a length of 200 mm and a height of 90 mm was provided at the center of the side walls of the right and left square tubular girders. For the corrugated cardboard laminate to be inserted in the girder, use A / A / A double / double-sided corrugated cardboard (so-called tri-wall corrugated cardboard) that has been polymer-bonded and cut according to the dimensions of the opening. Then, it was attached as shown in FIG. By the way, a product weighing 40 kg packed in cardboard is placed on this pallet, and a shock recorder (G meter) is attached to the side of the product and then dropped from a height of 40 Cm to measure the impact on the product. did. For reference, the same test was performed on a pallet (comparative example) having a structure similar to that of the present invention and having nothing inserted into the opening. The test results are shown in Table 1.

[0016]

[Table 1] Samples Comparative example Product of the present invention Impact strength (G) 26.0 27.0 Compressive strength (Kg) 1203 1490

[0017]

[Effect of device]

 As described above, according to the present invention, the square tube girders formed by bending corrugated cardboard into a square tube shape are provided at both ends of the back surface of the top plate, and the diagonal line positions inside the square tube girders are provided. In addition to the reinforcing plate, not only that but also a stack of paper cores or corrugated balls in which openings are provided in the side wall of the square tubular girder and a large number of cells (cells) are formed by polymerizing and adhering the paper upright. The body is integrated by being inserted into the square tubular girder through the opening so that the axis of the cell is orthogonal to the surface of the top plate. Since such a structure is adopted, the internal reinforcing plate that is inserted into the rectangular tubular girder and is positioned in a bracing pattern and the paper core or corrugated cardboard that has a number of holes (cells) orthogonal to the top plate surface are formed. Since it cooperates with the laminated body to prevent crushing, bending and twisting of the rectangular column girder, the result is that the pallet has excellent impact strength and remarkably excellent compressive strength. . Further, the present invention has an effect that it is easy to manufacture with a simple structure, is lightweight and inexpensive, and is entirely made of paper, so that it can be easily recovered and reused or incinerated.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire pallet of the present invention.

FIG. 2 is a development view of the same.

FIG. 3 is a partial perspective view showing a part of the reinforced beam member.

FIG. 4 is an exploded view of the same.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a plan view of an internal reinforcing plate used in combination with the reinforcing plate 6.

FIG. 8 is a front view showing a modified example of the pallet of the present invention.

[Explanation of symbols]

 1 Top Plate 2 Luggage 3 Square Tubular Girder 4 Ruled Line 5a Side Wall 6 Reinforcement Plate 7 Opening 8 Slit 9 Laminate 10 Internal Reinforcement Plate 11 Slit

Claims (1)

[Scope of utility model registration request] 1. A pallet in which a square tube girder formed by bending a corrugated cardboard into a square tube shape is attached to at least both ends of a back surface of a top plate formed from a corrugated board or a paperboard. , A stack of paper cores or corrugated cardboard with openings formed on the side walls of square tubular girders and polymerized and glued in a standing state to form a number of holes (cells), the axis of the cells being orthogonal to the top plate surface. As described above, while being integrated by being inserted into the rectangular tube girder through the opening, a reinforcing plate is arranged at a diagonal position inside the rectangular tube girder in which the paper core or the corrugated cardboard laminate is not inserted. Palette to do.