JPH0224742Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a pallet for placing and transporting articles, in particular,
This article relates to the technology of ultra-lightweight and simple pallets.

Conventional technology Conventionally, pallets for loading and unloading goods have often been made of wood, which is strong and has great pressure resistance, and is safe from rainwater when loading and unloading outdoors. Although it has certain advantages, it is heavy (10 to 15 kg/m ² ) considering its base area.
The proportion of pallets in the cost of transporting goods is so large that it cannot be ignored, making it uneconomical, and in the case of one-way pallets, it leads to wasteful consumption of wood, making it increasingly difficult to secure materials. In particular, in the case of pallets for export, inconveniences have become noticeable, such as the requirement for wood to be treated for insect and epidemic prevention at the loading and unloading area.

Therefore, instead of wooden pallets, pallets made of cardboard have been proposed. That is, a girder with a core of laminated corrugated cardboard is glued to the underside of a corrugated top board, or a corrugated board is attached from the top and bottom in a sandwich-like manner. This palette is lightweight (varies depending on specifications, but the lightest is 3
Kg/m ² ) and insect/epidemic prevention treatment at the destination, but there are some problems in terms of pressure resistance, and for example, if the pallet is placed on a conveyor while still being loaded, the pallet may become distorted. If the article is supported on the rollers of the conveyor, there is a risk that the conveyance of the article may stop midway along the conveyor, causing a malfunction. What is more problematic is that it has poor water resistance, so if cargo is handled outdoors after rain, it absorbs accumulated water and loses its strength all at once, and if items are piled up, there is a risk of the cargo collapsing. Furthermore, in the case of open stacking, even if the goods are covered with a waterproof sheet, it is impossible to prevent the flow of rainwater from soaking the pallets. Perhaps because of these problems, in reality, there is a demand for only a few percent of the pallets on the market, and even that is often used for one-way use.

Purpose Therefore, the present invention aims to provide a new pallet that can take advantage of the advantages of conventionally used wooden pallets while eliminating their disadvantages as much as possible.

Structure The present invention consists of: (1) attaching a plurality of girders formed by surrounding the circumferential surface of a columnar Styrofoam with a plastic corrugated board at intervals on the lower surface of the corrugated top board;
On the bottom surface of the girder, multiple strips of plastic cardboard are installed almost orthogonally to the same girder and intersect with all the girders as a lower plate, and the ends are extended so as to overlap at least the bottom of the outermost girder. An ultra-lightweight pallet characterized by being attached with

(2) The above-mentioned method consists of extending the end of the lower band plate, bending it along the side of the girder, bending the end further along the upper plate, and fixing it to the same plate.
An example of the ultra-lightweight pallet described in item (1) will now be described below with reference to the drawings.

Embodiment 1 FIG. 1 is a perspective view of the ultra-lightweight pallet of the present invention, and in the figure, 1 is the upper plate of the pallet, which is square and usually rectangular (for example, W x L = 1200 x 1000);
The size and material differ depending on the type and shape of the article to be placed.

Normally reinforced cardboard TW (three-layer laminated), DW
(two-layer laminated) or general cardboard, etc., are used and have rich cushioning properties. These materials are selected depending on the type of article to be placed. It is also possible to use plastic cardboard. In this case, completely water- and oil-resistant pallets can be formed.

2 is a prismatic (for example, H=90) foamed polystyrene with a foaming degree of about 50 times,
It constitutes the core material of the girder 3 and has pressure resistance and a buffering effect, and when pressure resistance is particularly required, a flame retardant material is used. The length of the girder 3 is equal to the length of one side of the upper plate 1, and a plurality of girders are attached to the lower surface of the upper plate 1, parallel to each side of the upper plate. In this embodiment, a total of three girders 3 are provided on the lower surface of the upper plate 1, and a fork is inserted into the space between the girders 3 to lift up the loaded articles together with the pallet, move them, and unload them. Cargo handling will be carried out.

4 is a plastic corrugated board that wraps around the circumferential surface of the spar core 2, and by covering each longitudinal surface in a glue-wrap shape, it protects the spar core 2 from external forces and improves water resistance and oil resistance. It has the effect of In this case, the pressure resistance effect will be more pronounced if the direction of the waves of the corrugated board and the direction of the winding are perpendicular to each other.

Numeral 5 is a narrow band-shaped plastic corrugated cardboard box, which is located on the bottom surface of each girder 3 and is fixed to each girder 3, and which is arranged perpendicularly to the longitudinal direction of the girder 3.
In this embodiment, three girder lower plates are provided.
The length is at least enough to connect the girders 3 attached to the outermost side of the upper plate 1,
In other words, it needs to be the same length as the corresponding side of the upper plate 1.

Since there is no suitable adhesive for gluing the above-mentioned plastic corrugated cardboard, all the mounting parts are fixed with stitches 6 to ensure the mounting position of the girder and to strengthen the pallet structure. .

By being directly grounded, the girder lower plate prevents the girder core from being soaked in water or oil, and also serves to improve the water and oil resistance of the pallet itself.

Since the pallet of the present invention has the structure described above, it is of course better than the conventional wooden pallet.
Extremely lightweight compared to cardboard pallets (2 to 5
Kg/m ² ), which is very effective in reducing freight costs. In addition, although it is lightweight, it has high pressure resistance, and when we tested it with a flat static load of about 5 tons/ ^m2 , no deformation was observed, and it was completely water and oil resistant. , it is incomparably superior to cardboard pallets. Further, it has the advantage that there is no need for insect-proofing or epidemic prevention treatment at destinations such as wooden pallets, and since the materials are mainly petrification-derived products, they are not difficult to obtain.

Example 2 Both ends of the girder lower plate 5 in Example 1 are fixed at the lower surface of the outermost girder 3, but in this example, the lower plate 5 is extended and its ends are extended along the side surface of the girder 3. The upper plate 1 is made to stand up and bent, and the end portion is further bent and stitched to the side edge of the upper plate 1. In this way, the girder material 3 is held down by the girder lower plate 5 to form a mold 7, which strengthens the structure and is suitable for placing heavy objects. In the case of pallets for carrying heavy objects, the structure can be strengthened by changing the grade of the girder core material and by changing the basis weight of the plastic corrugated cardboard of the girder lower plate.

Embodiment 3 Embodiments 1 and 2 shown in FIG. 1 are pallets of a type in which a fork is inserted between the upper plate 1 and the lower girder plate 5 from the front side or the back side in the figure to lift and carry out cargo handling. However, there are times when you want to insert and transfer a fork from the side as well. In this embodiment, the girder material is not made to have the same length as the width of the upper plate, but is divided into three parts, and two holes are provided in the longitudinal direction of the girder. In other words, in the pallet shown in Figure 1, there is an empty space between the rising part 7 of the right-hand girder lower plate 5 and the rising part 7 of the next girder lower plate.
The pallet is such that a fork can be inserted into the pallet from the right or left side.

Effects As described above, the present invention is extremely lightweight compared to conventional pallets, the freight cost of the pallet itself does not account for a large portion even when goods are transported on top of each other, and it is relatively strong and pressure-resistant. In addition, the upper plate has excellent cushioning properties, and the lower plate in particular is completely water and oil resistant, making it easy to handle in open air cargo handling. There is no requirement for self-insect prevention or epidemic prevention, etc.
It has many advantages. However, due to the use of petrification derivatives as the material, it is unavoidable that they are slightly more expensive than cardboard pallets. However, depending on its outstanding advantages and the environment of use, it can become a very popular competitor to the conventionally used pallets.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the pallet of the present invention. 1...Top plate, 2...Core material, 3...Girder material, 4...
Plastic cardboard, 5... Girder lower plate, 6...
Stitch stop.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plurality of girders formed by surrounding the circumferential surface of a columnar Styrofoam with a plastic corrugated board are attached at intervals to the lower surface of the corrugated top board, and
On the bottom surface of the girder, multiple strips of plastic cardboard are installed almost orthogonally to the same girder and intersect with all the girders as a lower plate, and the ends are extended so as to overlap at least the bottom of the outermost girder. An ultra-lightweight pallet characterized by being attached with (2) Request for utility model registration for extending the end of the lower band plate, bending it along the side of the girder, bending the end further along the upper plate, and fixing it to the same plate. Ultra-light pallets as described in item (1) of the scope.