WO2008026259A1

WO2008026259A1 - Corrugated board pallet manufacturing method, and pallet

Info

Publication number: WO2008026259A1
Application number: PCT/JP2006/317048
Authority: WO
Inventors: Yasuzumi Tanaka
Original assignee: Yasuzumi Tanaka
Priority date: 2006-08-30
Filing date: 2006-08-30
Publication date: 2008-03-06

Abstract

Provided is a pallet comprising a bent extending portion (8) between a bottom portion (3) and crossbeam portions (4). A first sheet includes the crossbeam portions (4) and the bent extending portion (8) at the end portion of one side of an opposite side, and the crossbeam portions (4), the bent extending portion (8) and adhesive portions at the end portion of the other side, such that the bottom portion (3), the bent extending portion (8) and the crossbeam portions (4), and the bottom portion (3), the bent extending portion (8), adhesive portions and the crossbeam portions (4) are formed of one sheet of corrugated board. A second sheet includes the crossbeam portions (4) and the bent extending portion (8) at the end portion of one side of an opposite side, and adhesive portions at the end portion of the other side, such that the bottom portion (3), the bent extending portion (8) and the crossbeam portions (4), and the bottom portion (3) and adhesive portions are formed of one sheet of corrugated board. Also provided is a corrugated board pallet manufacturing method comprising adhering and assembling the adhesive portions of one side of the opposite side of the first sheet and the adhesive portions of the second sheet, and adhering a top portion and the crossbeam portions (4).

Description

Specification

Corrugated pallet manufacturing method and pallet

Technical field

[0001] The present invention relates to a method for manufacturing a corrugated cardboard pallet used for transporting and storing articles and a pallet.

Background art

Conventionally, wooden flat pallets have been used for cargo loading. However, in recent years, there have been problems with nature conservation and restrictions on the use of wood, as well as problems with increased weight due to the use of metal nails to secure the materials used, and injuries due to rough wooden pieces or nails. Dangers are pointed out, and demands for weight reduction, cost reduction, disposal, and reusability are increasing.

In addition, wooden pallets used for special purposes and exports may reduce the value of the product due to moisture in the wood, and fumigation is required to kill insects and bacteria that are parasitic on the wood. There was a case. Furthermore, wooden pallets have a force that can hardly be expected because they are less likely to attenuate vibrations caused by road surface irregularities when products are loaded on pallets and transported by trucks. In addition, current wooden pallets and plastic pallets were difficult to dispose of easily when discarded as resources.

[0003] Therefore, a corrugated cardboard pallet has been proposed as a means for solving the above problems.

Specifically, Patent Document 1 discloses a corrugated cardboard pallet for transporting articles, which is disposed between the front and back surfaces of the surface portion on which the article is placed and the back surface portion opposite to the surface portion and the front and back surfaces. There is disclosed a cardboard pallet in which a side surface portion forming a gap is integrally formed using a flat cardboard as a material, and a cardboard girder material is provided in the gap between the front and back surfaces. Thereby, an inexpensive and strong corrugated cardboard pallet can be provided. However, the automation was insufficient due to the large number of parts. Therefore, there is a problem that the work efficiency is poor and the cost is still high.

Patent Document 2 discloses a corrugated cardboard pallet having a top plate and a girder. A single-side cut portion is provided at a predetermined interval in a direction perpendicular to the step of the corrugated cardboard sheet between the front and back flat plate end portions of the roll sheet sheet, and a folding surface is provided by folding the corrugated cardboard sheet into a bellows shape at the single-side cut portion. A corrugated cardboard pallet is disclosed in which at least two girder members are attached in parallel to the lower part of the top plate with the folding surface horizontal. This makes it possible to provide a strong cardboard pallet. However, the automation was insufficient due to the large number of parts. Therefore, there was a problem that work efficiency was poor and the cost was still high.

Further, Patent Document 3 discloses a paper pallet main body that is entirely or mostly made of cardboard or paper products and supports a bottom plate by a girder, and the pallet main body is formed by one or a plurality of sheets. In the paper sheet used for the formed paper pallet, the opposite side of the central portion corresponding to the shape of the pallet body of the one sheet is extended, and the extended portion is divided into three width regions via a broken line. In addition, a second width region in which a girder is formed in each of the first width regions adjacent to the opposite side of the central portion and a girder forming portion is placed outside the first width region by cutting or folding a corresponding width region. A beam portion positioned on the upper surface of the beam formed by bending the beam forming portion, and at least a beam portion formed by bending the beam forming portion in a third width region located outside the second width region. Girder reinforcement for reinforcing one side of the girder is provided. Paper sheet used for the paper pallet, wherein the door is disclosed. As a result, it is possible to provide a cardboard pallet that is simpler and less expensive than conventional ones. However, there is a problem that the strength is weak with the above means. Also, because it is not suitable for automation, there is a problem that work efficiency is poor and the cost is still high.

[0004] Patent Document 1: JP 2000-302129 A

Patent Document 2: Japanese Patent Laid-Open No. 2005-306465

Patent Document 3: Japanese Patent Application Laid-Open No. 2004-352369

Disclosure of the invention

Problems to be solved by the invention

[0005] In view of the above problems, an object of the present invention is to provide a corrugated board pallet manufacturing method and a pallet that can be easily automated by a machine, are simple, low in manufacturing cost, and strong in strength. Means for solving the problem

The features of the present invention, which is a means for solving the above problems, are listed below.

The present invention includes a bottom plate, two opposite sides on the bottom plate, a girder having a predetermined height respectively disposed between the two sides, and a top plate placed on the girder. In the method for manufacturing a pallet in which a space for inserting a claw member of a forklift is formed between the bottom plate and the top plate by the girder portion, a bent extension portion is provided between the bottom plate and the girder portion. The first sheet has the spar and the bent extension at one end of the opposite side, and the spar, the bent and extended part and the adhesive at the other end, and the bottom plate And the bent extension part and the girder part, and the bottom plate, the bent extension part, the adhesive part and the girder part are formed of corrugated cardboard into one sheet, and the second sheet is formed at the end on the opposite side. The girder part and the bent extension part have an adhesive part at the other end, and the bottom plate, the bent extension part, the girder part, and the bottom plate, The first sheet and the second sheet are bonded to each other on the opposite side of the first sheet by the bonding section of the second sheet. The pallet manufacturing method is characterized by assembling and bonding the top plate and the girder part.The present invention provides a plate folded from the lowermost plate of the bent extension portion of the first sheet. The first sheet edge force is folded back at a distance, the distance portion away from the edge on the lowermost plate is used as the adhesive part, and the edge on the opposite side of the second sheet is folded in a Z-shape. Further, the portion where the tip of the uppermost plate protrudes from the bottom plate is used as an adhesive portion.

The present invention folds back the plate folded from the lowermost plate of the bent extension portion of the first sheet, separating the edge force distance of the first sheet, folding the end of the bottom plate into an L shape, The end of the second sheet on the opposite side is bent in an L shape, and the bent end of the first sheet is bonded to the bent end of the second sheet.

According to the present invention, the girder portion includes a core member portion and a cover portion, and a plurality of single-side cut portions are alternately arranged in a perpendicular direction with respect to equally spaced steps of the corrugated cardboard forming the core member portion. It is formed in such a manner that it is folded after being accordion-shaped at the one-side cut part and then bonded, and the core part is covered with the cover part.

The present invention includes a bottom plate, two opposing sides on the bottom plate, and the two sides. A space portion for inserting a claw member of a forklift between the bottom plate and the top plate by the girder portion. In the manufacturing method of the formed pallet, the bottom plate and the spar are formed into one sheet with corrugated cardboard, and the first sheet has the spar at the end and the center on both sides of the opposite side, The second sheet has the girder at the end and the center on the opposite side, and the adhesive at the other end and the center. The first sheet and the second sheet are A method of manufacturing a pallet comprising: bonding a lower portion of the spar on one side of a sheet and the bonding portion of the second sheet to assemble and bonding the top plate and the spar. .

According to the present invention, the girder portion has a core member portion and a cover portion force, and a plurality of single-sided cut portions are formed in a perpendicular direction with respect to equally spaced steps of the corrugated ball forming the core member portion. It is formed alternately, bonded after being folded into a bellows shape at the one-side cut part, covering the core part with the cover part, and attaching to the bottom plate with the non-power bar part surface of the girder part To do. In the present invention, the core portion is configured in two rows on the sheet, and a cut is formed between the two rows from the inner side to the outer side of the sheet. It is connected, the inner row of the two rows is folded back, and is folded in a bellows shape at the one-side cut portion.

The present invention is produced by assembling corrugated cardboard sheets, and a bottom plate, two opposite sides on the bottom plate, and a girder having a predetermined height respectively disposed between the two sides, and placed on the girder. In the pallet having a top plate, the pallet has a bent and extended portion between the bottom plate and the girder, and is composed of two sheets, a first sheet and a second sheet, and the first sheet is on the opposite side. The end part has the girder part and the bent extension part, and the end part on the other side has the girder part, the bent extension part, and the adhesive part, and the bottom plate, the bent extension part, the girder part, and the bottom plate. And the adhesive portion, the bent extension portion, and the girder portion are formed into one sheet, and the second sheet has the girder portion and the bent extension portion at the other end of the opposite side, The bottom plate, the bent extension portion, the girder portion, and the bottom plate and the adhesive portion. The first sheet and the second sheet are bonded to each other on the opposite side of the first sheet by the bonding portion of the first sheet and the bonding portion of the second sheet. A pallet characterized in that a plate and the girder are bonded. In the present invention, the adhesive portion of the first sheet is configured such that the lowermost plate force of the bent extension portion of the first sheet is folded back at a distance from the end portion of the first sheet, and the lowermost plate It is a distance part away from the above-mentioned edge part, and the adhesion part of the above-mentioned 2nd sheet bends the edge part of the other side of the above-mentioned 2nd sheet into a Z shape, and the tip of the folded uppermost board projects bottom plate force It is the part which was made.

In the present invention, a plate folded from the lowermost plate of the bent extension portion of the first sheet is folded back at an end force distance of the first sheet, and an end portion of the bottom plate is folded into an L shape. And a bonding portion formed by bending an end portion on the opposite side of the second sheet into an L shape.

The present invention has a girder part having a core part and a cover part, and the corrugated ball forming the core part has equidistant steps, and is perpendicular to the steps. A plurality of single-sided cut portions formed on the front and back surfaces are alternately formed, and after being folded into a bellows shape at the single-side cut portions, the girder portions are bonded and covered with the cover portion. To do.

The present invention is produced by assembling corrugated cardboard sheets, and a bottom plate, two opposite sides on the bottom plate, and a girder having a predetermined height respectively disposed between the two sides, and placed on the girder. In a pallet having a top plate, the bottom plate and the girder are formed into one sheet. The first sheet and the second sheet are two sheets, and the first sheet has end portions on opposite sides. The second sheet has the spar at the opposite end and the center, and the adhesive at the other end and the center. The first sheet has the spar at the center. And the second sheet are bonded to each other on the opposite side of the first sheet at the lower part of the spar and the bonding part of the second sheet, and after assembling, the top plate and the spar are bonded together. It is a pallet characterized by.

The present invention has a girder part having a core part and a cover part, and the corrugated ball forming the core part has equidistant steps, and is perpendicular to the steps. The plurality of single-sided cut portions formed on the front and back surfaces are alternately formed, folded after being accordion-shaped at the single-side cut portions, and bonded together, and the girder portion covered by the cover portion is a non-power bar portion surface And is attached to the bottom plate.

In the present invention, the core portion is configured in two rows on the sheet, and has a cut between the two rows from the inner side to the outer side of the sheet. A row is connected, the inner row of the two rows is folded back, and the girder portion is folded in a bellows shape at the one-side cut portion.

The invention's effect

[0008] By the means to solve the above, it is possible to provide a corrugated cardboard pallet manufacturing method and a pallet that are easy to be automated by a machine, simple, low in manufacturing cost, and strong in strength. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Note that it is easy for a person skilled in the art to change or modify the present invention within the scope of the claims to make other embodiments, and these changes and modifications are included in the scope of the claims. The following description is an example of the best mode of the present invention, and does not limit the scope of the claims.

FIG. 1 is a view showing a sheet of the present invention. The sheet is also composed of a two-sheet force of a first sheet 1 and a second sheet 2 in which the bottom plate 3 and the girder 4 are formed into one sheet.

The first sheet 1 has a girder part 4 and a bent extension part 8 at one end of the opposite side, and has a girder part 4, a bent extension part 8 and an adhesive part 5a at the other end part. . Then, the bottom plate 3, the bent extension portion 8 and the girder portion 4 are formed into one sheet at the end on one side of the opposite side, and the bottom plate 3, the adhesive portion 5a, the bent extension portion 8 at the other end. Girder 4 is molded into one sheet.

Further, the second sheet 2 has a girder part 4 and a bent extension part 8 at the end part on the opposite side, and a contact part 5b at the end part on the other side. The bottom plate 3, the bent extension portion 8 and the girder portion 4, and the bottom plate 3 and the bonding portion 5b are formed into one sheet.

Further, the first sheet 1 and the second sheet 2 are assembled by being bonded together at the bonding portion 5 a on the opposite side of the first sheet 1 and the bonding portion 5 b of the second sheet 2. After assembling the girder 4 etc., the top plate and girder 4 are bonded together to produce a pallet.

As a result, the members can be formed into a single sheet, so that processing costs such as pressing can be greatly reduced, and a simple cardboard pallet can be provided at a low unit price.

When assembling with the conventional top plate, bottom plate 3 and girder 4 members, nine girder portions 4 are required, so there are 11 members. Therefore, there are problems that the number of processes such as bonding work is increased, automation is difficult, and cost is increased. In the present invention, a pallet is made up of a top plate and two sheets. Since it can be manufactured, the flow work by the machine is easy, and the time and labor can be greatly reduced.

[0011] The number of corrugated boards and the width of the corrugated board in the bent extension portion 8 of the present invention are not particularly limited as long as they are 90 mm or more in a state where the bent extension portion 8 is extended. Preferably, the number of corrugated board is two. When the number of corrugated board is two, the deterioration due to expansion and contraction is small, and the force can be expanded and contracted smoothly. Also, the forklift claw can be inserted smoothly, and the possibility of damage to the bent extension 8 by the forklift claw can be reduced.

FIG. 2 is a diagram showing adhesion between the first sheet and the second sheet. The adhesive portion 5a of the first sheet 1 is formed by folding a plate folded back from the lowermost plate 8a of the bent extension portion 8 of the first sheet 1 at a distance from the end of the first sheet 1, and on the lowermost plate 8a. The distance portion away from the end is referred to as the bonding portion 5a. It is provided by the difference in distance from the lowermost plate 8a of the bent extension portion 8 and the end portion of the plate folded back from the lowermost plate 8a. By providing a difference in the distance between the lower end plate 8a of the bent extension 8 and the end force between the lower end plate 8a and the lower end plate 8a, the lower end plate 8a can be manufactured without extra fine force, processing, or increase of parts. An adhesive portion 5a can be provided on the top.

Also, for the adhesive part 5b of the second sheet 2, the end part of the opposite side of the second sheet 2 is bent in a Z shape, and the part where the tip of the bent top plate also protrudes the bottom plate force shall be the adhesive part 5b. Can be made. As a result, the tip of the uppermost plate protrudes from the second sheet 2, and this protruding portion can be used as the bonding portion 5b.

Then, the bottom plate 3 and the girder 4 of the pallet can be produced by bonding the bonding portion 5a of the first sheet 1 and the bonding portion 5b of the second sheet 2 described above. As a result, the first sheet 1 and the second sheet 2 can be closely adhered to each other, the bottom plate 3 can be kept stable, the stability of the load can be maintained, and the strength of the corrugated ball pallet can be maintained.

[0013] Further, in the present invention, in FIGS. 1 and 2, the plate folded back from the lowermost plate 8a of the bent extension portion 8 of the first sheet 1 is folded back with the end force of the first sheet 1 also spaced away from the bottom plate. Bend the end of 3 into an L shape, fold the end on the opposite side of the second sheet 2 into an L shape, the end of the first sheet 1 bent into an L shape, and the L shape of the second sheet 2 It can be glued at the end that is bent into a shape. As a result, the first sheet 1 and the second sheet 2 can be easily adhered, the bottom plate 3 can be kept stable, the stability of the load can be maintained, and the strength of the cardboard pallet can be maintained. As shown in FIG. 1, the girder 4 is formed by forming the core part 4a and the cover part 4b into a single sheet, and the corrugated cardboard forming the core part 4a is arranged at equal intervals. And a plurality of single-side cut portions 7 are alternately arranged in the perpendicular direction of the step. This makes it easy to bend even W flute corrugated cardboard, which is inherently difficult to bend. In addition, the cardboard can be prevented from bulging during bending.

FIG. 3 is a diagram showing the girder. Fig. 4 is an assembly drawing of the girder. As shown in FIG. 3, it is folded in a bellows shape with a single-side cut portion 7 and bonded, and covered with the cover portion 4b. Adhesion at the cut section of the single-sided cut portion 7 requires a large amount of adhesive and drying time, so the adhesive portion must be faced. Therefore, an adhesive can be applied to each of the bellows-like surfaces, and the adhesive application force can be reduced to dry during the automatic operation, which is effective in reducing costs. Also, as shown in Fig. 4, the cover 4b is covered and positioned so that positioning can be facilitated, the girder 4 can be connected better, and the strength can be improved. The automatic assembly line can be made in a short time by covering the single-sided cut part 7 by automatic assembly and enabling bonding. Further, the folding surface 6 of the girder 4 and the top plate are attached in parallel with the bending extension 8 interposed therebetween. Therefore, the load of the load acts on the folding surface 6 of the girder 4. As described above, since the folding surface 6 has a strong strength against the load, the strength of the pallet becomes strong as a result, and a heavy object can be loaded.

FIG. 5 is a lower part of a corrugated cardboard pallet having a bent and extended portion of the present invention. A bent extension 8 is provided between the bottom plate 3 and the girder 4. Further, the bottom plate 3, the girder 4, and the bent extension 8 are formed into one sheet for each of the first sheet 1 and the second sheet 2. Then, a pallet can be produced by attaching a top plate, and after the pallet is assembled, the bent extension portion 8 can be expanded and contracted between the bottom plate 3 and the girder portion 4.

Therefore, a cushioning effect can be given to the cardboard pallet, and when the fork part of the fork lift is inserted into the pallet, the bent extension part 8 extends and the pallet top plate is lifted. Then, when the forklift pawl is pulled out from the pallet, the bent extension 8 shrinks and the pallet top plate is lowered. This makes it possible to adjust the height of the pallet to the size of the claw of the forklift when carrying it using a forklift. On the other hand, when standing, the height of the pallet can be reduced, so more pallets can be placed, Space can be used effectively. In addition, it is possible to increase the load on trucks and ships during transportation only in the warehouse.

FIG. 6 is a view showing a sheet of the present invention. The sheet is also composed of a two-sheet force of a first sheet 1 and a second sheet 2 in which the bottom plate 3 and the girder 4 are formed into one sheet.

The 1st sheet | seat 1 has the girder part 4 in the edge part and the center part of the opposite side both sides. Further, the second sheet 2 has a girder 4 at the end and center of the opposite side, and an adhesive portion 5b at the end and center of the other side. Then, the first sheet 1 and the second sheet 2 are assembled by bonding together the lower part of the girder part 4 on the opposite side of the first sheet 1 and the adhesive part 5b of the second sheet 2, and the top plate and the girder part are assembled. Adhere 4 to make a pallet.

As a result, the members can be formed into a single sheet, so that processing costs such as pressing can be greatly reduced, and a simple cardboard pallet can be provided at a low unit price. In particular, in machine automation, as the number of members increases, the work becomes complicated and the cost that is difficult to automate increases. In the present invention, since the pallet can be manufactured with the top plate and the two sheets, the flow work by the machine is easy, and the time and the number of workers can be reduced.

As shown in FIG. 6, the girder 4 is formed by forming the core material portion 4a and the cover portion 4b into a single sheet, and the corrugated cardboard forming the core material portion 4a is arranged at equal intervals. And a plurality of single-side cut portions 7 are alternately arranged in the perpendicular direction of the step. This makes it easy to bend even W corrugated cardboard, which is hard to bend. In addition, it can be bent without the cardboard swelling.

FIG. 7 shows the girder. As shown in FIG. 7, it is folded and bonded in a bellows shape with a single-side cut portion 7 and covered with the cover portion 4b. Adhesive can be applied to each of the bellows-like surfaces, and the adhesive application force can be reduced to dryness during automatic operation, which is effective in reducing costs. In addition, the positioning by covering with the cover 4b facilitates the positioning, improves the coupling of the girder 4 and increases the strength.

Further, the folding surface 6 and the top plate of the girder 4 are attached to the top surface of the girder 4, and the non-power bar portion of the girder 4 is attached to the bottom plate 3. Therefore, the load of the load acts on the folding surface 6 of the girder 4. As described above, since the folding surface 6 has a high strength against the load, the strength of the pallet becomes strong as a result, and a heavy object can be loaded. FIG. 8 is a diagram showing a girder portion on a sheet. FIG. 9 is a diagram showing a girder.

Figure 8 shows the sheet cut in detail. In the figure, a dark solid line A indicates a cut on the sheet, a dotted line B indicates a one-side cut on the back side of the sheet, and a dotted line C indicates a one-side cut on the sheet surface. The solid line D is broken and connected. As shown in the figure, the girder has two rows on the sheet and has equally spaced steps. Between the two rows, there are cuts 9 toward the outside of the seat, and the inside force of the seat is the outermost. (Solid line D) Two rows are connected at 10 (see Figure 6). Then, the inner row of the two rows can be folded back and folded into a bellows shape at the single-side cut portion 7 (see FIG. 7).

Furthermore, the girder 4 is bonded in a bellows shape to form a single body (see FIG. 9).

With the girder 4 having such a structure, the bottom plate 3 and the girder 4 can be produced on one sheet. In addition, it can be integrally formed by a press, and a simple and inexpensive cardboard pallet can be provided.

FIG. 10 is a lower portion of the cardboard pallet of the present invention. The first sheet 1 and the second sheet 2 can be bonded and assembled, and the top board can be bonded to produce a cardboard pallet. The corrugated cardboard pallet has four corners of the bottom plate 3 and a central portion of each side, and a girder portion 4 at the central portion of the bottom plate 3. As a result, the top plate can be supported as a whole and the strength against weight can be increased. In addition, the fork part of a four-way force forklift can be inserted into the corrugated cardboard pallet, enabling smooth transportation and loading operations.

[0020] As the corrugated board that can be used for the corrugated board pallet of the present invention, A flute, B flute, E flute, W flute, F flute, G flute, C flute, AA flute, AAA flute, etc. can be used. . Also, considering the weight of the cargo loaded on the pallet, the strength is strong. W flute is preferred!

The linerboard which can be used for cardboard pallets of the present invention, as a liner, the weight per 1 m ² is 180 g, 210g, water liner was K liner, water pressurized Eyabachisui machining the surface of Κ liner such 280g · Water-repellent liners, inexpensive C-liners that contain many recycled papers, cocoon liners, and white liners exposed to C-liners can be used. In addition, the weight of lm ² is 120g, 160g, and 180g of medium shin, and it is hardened with chemicals such as reinforcing agents to give strength. The weight of lm ² is 180g and 200g. Use medium shin can do.

Preferably, the cardboard pallet is a 1100 or 1400 mm square. Furthermore, it is preferable that the girder part of the cardboard pallet is at both ends and the center part of the pallet.

[0021] The cardboard punching of the present invention is not particularly limited, but a Thomson machine or the like can be used. An automatic flat plate punching machine dedicated to cardboard can also be used, and MTR-1600 (manufactured by Mitsubishi Heavy Industries, Ltd.), SAMURAI 140B to 160B (manufactured by Nikko Engineering Co., Ltd.), etc. can be used.

Further, the adhesive used for adhering the corrugated board of the present invention is not particularly limited as long as it can be dried and an adhesive effect can be obtained in an automatic process. For example, vinyl acetate adhesive can be used, and Sebian—A215, Sebian—A415, Sebian—A615 (manufactured by Daicel Finechem Co., Ltd.), Bi-Plan 1571, Bi-Plan 1572, Bi-Plan 1 581 ( Nissin Chemical Industry Co., Ltd.). Hot melt adhesives can also be used.

Furthermore, in this invention, a veneer etc. can also be placed on a top plate. As a result, the weight of the load is evenly distributed and concentration of the load on the local area, which is a weak point of the cardboard pallet, can be prevented.

Brief Description of Drawings

FIG. 1 is a view showing a sheet of the present invention.

FIG. 2 is a view showing adhesion between a first sheet and a second sheet.

FIG. 3 is a diagram showing a digit part.

[Fig. 4] Assembly drawing of girder.

FIG. 5 is a lower part of a corrugated cardboard pallet having a bent and extended part of the present invention.

FIG. 6 is a view showing a sheet of the present invention.

FIG. 7 is a diagram showing a digit part.

FIG. 8 is a view showing a girder on a sheet.

FIG. 9 is a diagram showing a digit part.

FIG. 10 is a lower part of the cardboard pallet of the present invention.

Explanation of symbols 1st sheet 2nd sheet Bottom plate

Girder

a Core part b Cover part a 1st sheet adhesive part b 2nd sheet adhesive part Folding surface Single-side cut part Bending / extending part Cut line

0 outermost

Claims

The scope of the claims

[1] A bottom plate, two opposite sides on the bottom plate, a girder having a predetermined height respectively disposed between the two sides, and a top plate placed on the girder, In the method of manufacturing a pallet in which a space portion for inserting a pawl member of a forklift is formed between the bottom plate and the top plate by a girder portion,

Between the bottom plate and the girder, has a bent extension portion,

The first sheet has the girder part and the bent extension part at one end of the opposite side, and the girder part, the bent extension part and the adhesive part at the other end part, and the bottom plate and the bent extension part. And the girder part, the bottom plate, the bent extension part, the adhesive part, and the girder part are formed into a single sheet by corrugated board,

The second sheet has the girder part and the bent extension part at one end of the opposite side, and an adhesive part at the other end, and the bottom plate, the bent extension part, the girder part, and the bottom plate and the The adhesive part is molded into a single sheet with corrugated cardboard,

The first sheet and the second sheet are assembled by bonding the bonding portion on the opposite side of the first sheet and the bonding portion of the second sheet,

Bonding the top plate and the girder

A method of manufacturing a pallet characterized by the above.

[2] The method for manufacturing a pallet according to claim 1,

The lowermost plate force of the bent extension portion of the first sheet is folded back at a distance from the end of the first sheet, and the distance portion away from the end on the lowermost plate is bonded to age,

The edge of the second sheet on the opposite side is bent in a Z shape, and the part where the tip of the bent top plate protrudes the bottom plate force is used as the bonding part.

A method of manufacturing a pallet characterized by the above.

[3] The method for manufacturing a pallet according to claim 1,

The lowermost plate force of the bent extension portion of the first sheet is folded back at a distance from the end of the first sheet, and the end of the bottom plate is bent into an L-shape;

Bend the opposite edge of the second sheet into an L-shape, A method for producing a pallet, wherein the bent end portion of the first sheet is bonded to the bent end portion of the second sheet.

[4] In the method for manufacturing a pallet according to any one of claims 1 to 3,

The girder part consists of a core part and a cover part,

A plurality of single-sided cut portions are alternately formed in a perpendicular direction with respect to the equally spaced steps of the cardboard forming the core portion,

Bonded after folding into a bellows shape at the one-side cut part,

Cover the core part with the cover part.

A method of manufacturing a pallet characterized by the above.

[5] A bottom plate, two opposing sides on the bottom plate, a girder having a predetermined height respectively disposed between the two sides, and a top plate placed on the girder, In the method of manufacturing a pallet in which a space portion for inserting a pawl member of a forklift is formed between the bottom plate and the top plate by a girder portion,

The bottom plate and the girder are molded into a single sheet of cardboard,

The first sheet has the girder at the end and the center on both sides of the opposite side,

The second sheet has the girder at the end and center of the opposite side, and the adhesive at the end and center of the other side,

Bonding the first sheet and the second sheet by bonding the lower part of the spar on the opposite side of the first sheet and the bonding part of the second sheet,

Bonding the top plate and the girder

A method of manufacturing a pallet characterized by the above.

[6] In the method of manufacturing a pallet according to claim 5,

The girder part consists of a core part and a cover part,

Bonded after folding into a bellows shape at the one-side cut part,

Cover the core part with the cover part,

Attach to the bottom plate with the non-force bar part surface of the beam part A method of manufacturing a pallet characterized by the above.

[7] In the method for manufacturing a pallet according to claim 6,

The core part is configured in two rows on the sheet,

Between the two rows, cut from the inside to the outside of the sheet,

The two rows are connected from the inner side to the outermost side of the seat,

Fold the inner row of the two rows and fold it in a bellows shape at the one-side cut portion

A method of manufacturing a pallet characterized by the above.

[8] Prepared by assembling corrugated cardboard sheets, placed on the bottom plate, two opposite sides on the bottom plate, and a predetermined height girder arranged between the two sides, respectively. In the pallet that has the top plate and

It has a bent and extended part between the bottom plate and the girder part, and consists of two sheets, a first sheet and a second sheet,

The first sheet has the girder part and the bent extension part at one end of the opposite side, and the girder part, the bent extension part and an adhesive part at the other end, and the bottom plate and the bent extension part. And the girder part, and the bottom plate, the adhesive part, the bent extension part, and the girder part are formed into one sheet,

The second sheet has the girder part and the bent extension part at one end of the opposite side, and an adhesive part at the other end, and the bottom plate, the bent extension part, the girder part, and the bottom plate, The bonded portion is formed into a single sheet,

The first sheet and the second sheet are bonded at the bonding portion on the opposite side of the first sheet and the bonding portion of the second sheet,

After assembling, the top plate and the girder are bonded.

A pallet characterized by that.

[9] In the pallet according to claim 8,

The adhesive portion of the first sheet is configured to fold back the lower plate force of the bent extension portion of the first sheet at a distance from the end portion of the first sheet, and to end the end on the lower plate. It is a distance part away from the part,

The adhesive portion of the second sheet is formed by bending an end portion on the opposite side of the second sheet into a Z shape, The tip of the bent top plate is the part where the bottom plate force protrudes

A pallet characterized by that.

[10] In the method of manufacturing a pallet according to claim 8,

A lowermost plate force of the bent and extended portion of the first sheet; and an adhesive portion obtained by folding the folded plate away from the end portion of the first sheet and folding the end portion of the bottom plate into an L shape; An adhesive part where the opposite side of the second sheet is bent in an L-shape; and

Have

A pallet characterized by that.

[11] In the pallet according to any one of claims 8 to 10,

Having a girder part having a core part and a cover part,

The corrugated cardboard forming the core part has equidistant steps,

A plurality of single-sided cut portions formed in a direction perpendicular to the step are formed alternately on the front and back surfaces,

The girder is bonded after being folded into a bellows shape at the one-side cut portion and covered with the cover portion.

A pallet characterized by that.

[12] A sheet of corrugated cardboard is assembled and manufactured. The bottom plate, two opposite sides on the bottom plate, and a girder having a predetermined height arranged between the two sides, and placed on the girder In the pallet that has the top plate and

The bottom plate and the girder are formed into one sheet, and the first sheet and the second sheet have two sheets,

The first sheet has the girder at the end and the center on opposite sides,

The second sheet has the girder at the end and the center on the opposite side, and the adhesive at the end and the center on the other side,

The first sheet and the second sheet are bonded at the lower part of the girder on the opposite side of the first sheet and the bonding part of the second sheet,

After assembling, the top plate and the girder are bonded.

A pallet characterized by that.

[13] In the pallet according to claim 12,

Having a girder part having a core part and a cover part,

The corrugated cardboard forming the core part has equidistant steps,

The girder part which is bonded after being folded into a bellows shape at the one-side cut part and covered with the cover part is attached to the bottom plate with a non-power bar part surface

A pallet characterized by that.

[14] In the pallet according to claim 13,

The core part is configured in two rows on the sheet,

Between the two rows, having a cut from the inside to the outside of the sheet,

The inner row of the two rows is folded and the girder portion folded in a bellows shape at the one-side cut portion

A pallet characterized by that.