JP4046522B2 - Corrugated pallet manufacturing method and corrugated pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a corrugated board pallet and a corrugated board pallet.
[0002]
[Prior art]
In recent years, cardboard pallets are generally used as an alternative to wooden pallets. Corrugated pallets have the advantage of being lighter and less expensive than wooden pallets and requiring no fumigation during export. Corrugated pallets are easier to recycle than wooden pallets.
[0003]
FIG. 9 shows an example of a conventional cardboard pallet 100. The pallet 100 includes a cardboard top plate 101, a base plate 102, and a girder 103. This girder 103 has a laminated structure in which a plurality of cardboards are laminated and glued and cut into a strip shape, and is bonded to the lower surface of the top plate 101 and the upper surface of the base plate 102.
[0004]
[Problems to be solved by the invention]
However, the girder 103 constituting the conventional corrugated board pallet is bent in the lateral direction by the load of the load placed on the top plate 101. In order to prevent this bending, the number of cardboards to be laminated is increased and the load bearing strength is increased. However, the increase in the number of cardboards increases the weight and makes the handling inconvenient and increases the cost. there were.
[0005]
Accordingly, an object of the present invention is to provide a method for manufacturing a corrugated board pallet having a girder having a corrugated board laminated structure in which the number of corrugated boards to be laminated is reduced and the bending in the lateral direction is prevented, and a corrugated board pallet .
[0006]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the present invention provides a method in which a plurality of the corrugated cardboards are folded on the corrugated cardboard so that crease lines are ruled by a rotary slitter at regular intervals, and folded in a continuous mountain shape along the crease lines. The girders made of a corrugated cardboard laminated structure having a constant width are manufactured together, and then the top plate and the main plate are fixed to both ends of the girders.
[0007]
In the above invention, beam members made of laminated structure superposed strip-shaped cardboard plurality is, since forms a mountain shape continuous, the stringer deflection in the lateral direction is prevented.
[0008]
In this manufacturing method, it is preferable that a rectangular cut-off portion is provided simultaneously with the crease and an insertion hole is formed in the manufactured beam member .
[0009]
This corrugated cardboard pallet is a corrugated cardboard pallet made of corrugated board, ground board and girders, and creases are creased by a rotary slitter at regular intervals, forming a continuous mountain shape along the creased line. A girder made of a corrugated cardboard laminated structure having a fixed width is provided by laminating a plurality of cardboards folded in this manner and fixed to each other, and the top plate and the base plate are fixed to both ends of the girder.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0011]
FIG. 1 shows a corrugated board laminated structure 1 applied as a girder of a corrugated board pallet according to the present invention. The corrugated cardboard laminated structure 1 is composed of a zigzag belt-like corrugated cardboard 2 having a continuous mountain shape.
[0012]
In order to manufacture the corrugated board laminated structure 1, first, a corrugated board 2a shown in FIG. 2 is prepared. In the present embodiment, the cardboard 2a is a double-sided cardboard 2a made of a combination of A flute and B flute cardboard. As shown in FIG. 3, the corrugated board 2a is passed between the rotary slitters 4a and 4b arranged at regular intervals along the transverse direction of the corrugated board 2a, thereby forming a crease line along the longitudinal direction of the corrugated board 2a. 3 is ruled at regular intervals in the horizontal direction of the cardboard 2a. The rotary slitters 4a and 4b are rotatably supported around the rotary shafts 5a and 5b, respectively.
[0013]
Subsequently, an adhesive is applied to the entire surface of one side of the ruled cardboard 2a, and the cardboard 2a is pressed from both sides by hands and bent at each crease line 3. As shown in FIG. 4, four folded cardboards 2a (which may be in the range of 2 to 6) are overlapped, and the wooden fixing jigs 6a and 6b are used for about 20 seconds. At normal temperature, they are pressed in the vertical direction in FIG. Each of the wooden fixing jigs 6a and 6b includes a pressing portion 7 having an isosceles triangle cross section. The length of the hypotenuse of the isosceles triangle is, for example, 100 mm, and the length of the base is preferably 120 mm. .
[0014]
Then, as shown by the alternate long and short dash line in FIG. 2, the fixed corrugated board 2a is cut with a constant width in the lateral direction of the corrugated board 2a, thereby forming the girders made of the zigzag-shaped corrugated board laminated structure 1 shown in FIG. Can be manufactured.
[0015]
Next, the case where the corrugated board laminated structure 1 manufactured by the manufacturing method is used as a girder of the corrugated board pallet 10 will be described. As shown in FIG. 5, the corrugated board laminated structure 1 is parallel to each other between the lower surface of the top plate 11 made of two or three double-sided cardboards and the upper surface of the base plate 12 made of one double-sided cardboard. The corrugated board pallet 10 is configured by adhering the upper surface of the corrugated board laminated structure 1 and the lower face of the top plate 11 and the lower face of the corrugated board laminated structure 1 and the upper face of the base plate 12. At this time, since the girders made of the corrugated board laminated structure 1 are arranged so that the longitudinal lines of the strip-like corrugated cardboard 2 are along the vertical direction, it is sufficient for the load of the load placed on the top board 11. Load bearing strength can be provided. Further, since the corrugated cardboard laminated structure 1 has a zigzag shape, the load-bearing strength is increased with a smaller number of strip-like corrugated cardboard 2 as compared with the conventional laminated structure of rectangular parallelepiped blocks, and the lateral deflection is increased. It becomes possible to prevent.
[0016]
Further, when the corrugated cardboard pallet 10 is used, the fork claw of the forklift is inserted into the fork insertion portion 10a between the girders so that the load can be easily loaded, unloaded and transported. In addition, the cardboard pallet 10 can be dragged and moved by one person by placing a hand on the indentation of the cardboard laminated structure 1.
[0017]
As a modification of the embodiment, as shown in FIG. 6, a rectangular cut-out portion 13 is provided at a predetermined position of the cardboard 2a at the same time as the ruled line of the manufacturing method, so that the cardboard as shown in FIG. An insertion hole 13 a may be formed on the lower side of the beam member made of the laminated structure 1. When this corrugated board laminated structure 1 is disposed on a corrugated board pallet 10 as shown in FIG. 8, the fork lift fork pawl is inserted into the fork insertion portion 10a or the insertion hole 13a between the girders, so that the pallet 10 Can be transported.
[0018]
【The invention's effect】
As is clear from the above description, according to the present invention, the corrugated board is creased with crease lines at regular intervals, and a plurality of corrugated cardboards folded at the crease line are stacked and fixed to each other. By cutting with a constant width, it is possible to manufacture a girder made of a corrugated cardboard laminated structure in which lateral deflection is prevented . This cardboard pallet can be reduced in weight and can be used effectively at low cost and in the form of cardboard paper disposal.
[Brief description of the drawings]
FIG. 1 is a perspective view of a girder having a corrugated board laminated structure according to an embodiment of the present invention.
2 is a top view of a corrugated board forming the corrugated board laminated structure of FIG. 1. FIG.
FIG. 3 is a view showing a state in which the cardboard of FIG. 2 is ruled.
4 is a view showing a state in which the corrugated boards of FIG. 2 are stacked.
5 is a perspective view showing a state in which a girder made of the corrugated board laminated structure of FIG. 1 is used for a pallet.
6 is a top view showing a modification of the cardboard of FIG. 2. FIG.
7 is a perspective view showing a modified example of the girders made of the corrugated board laminated structure of FIG. 1. FIG.
8 is a partially broken top view showing a state in which the girders made of the corrugated board laminated structure of FIG. 7 are used for a pallet.
FIG. 9 is a perspective view showing a state in which a conventional corrugated board laminated structure is used for a pallet.
[Explanation of symbols]
1 Corrugated cardboard laminated structure (girder)
2 Strip-like corrugated cardboard 2a Corrugated cardboard 3 Fold line 10 Corrugated cardboard pallet 11 Top plate 12 Base plate
13 Cut off part
13a insertion hole

Claims (3)

From the corrugated cardboard laminated structure having a constant width, a plurality of the corrugated cardboards, which are creased by a rotary slitter, are creased by a rotary slitter and are folded so as to form a continuous mountain shape. After manufacturing the girders
A method for manufacturing a corrugated board pallet, comprising fixing a top plate and a base plate to both ends of the girder.   The method for manufacturing a corrugated board pallet according to claim 1, wherein a rectangular cut portion is provided simultaneously with the ruled line, and an insertion hole is formed in the manufactured beam member. In a corrugated board pallet made of corrugated board, top board and girders,
A girder made of a corrugated laminated structure of constant width , in which crease lines are creased by a rotary slitter at regular intervals, and a plurality of corrugated cardboards folded in a continuous mountain shape along the crease lines are stacked and fixed to each other. A corrugated board pallet characterized in that a material is provided and the top plate and the base plate are fixed to both ends of the girder.

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