JPH1059363A - Paper-made pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a folded part and its vicinity from dropping in strength and allow inexpensive manufacture by providing a semi-cut end formed by cutting except a liner of a valley of each folded part on a bellows-member made of a corrugated fiberboard sheet. SOLUTION: The two-way insertion pallet 1 comprises a top plate 11 made of a corrugated fiberboard sheet, a bellows-member 2 made of a corrugated fiberboard sheet with a fold 8 stuck to a lower face of the top plate, a bottom plate 2 made of a corrugated fiberboard sheet with a fold 9 of the bellows- member stuck and two leg members 13 stuck to a lower face of the bottom plate. By folding the bellows-member 2, a semi-cut end 4 cut by the fold is exposed. An assembled face of the semi-cut ends serves as an adhesive part as a flat face for two upper and lower faces of the member 2. The leg member 13 comprises an M-shaped bellows-member 14 and a leg bottom plate 15. A fold above the bellows-member 13 is stuck to a lower face of the bottom plate 12, and a fold at the center below the member 13 and completely cut ends at both ends are stuck to an upper face of the leg bottom plate 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a paper pallet.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-72876 discloses that an interleaving paper formed in an angle in the embodiment shown in FIG. The placed paper pallets are available. However, the paper pallets described above require (1) expensive interleaving paper, (2) heavy weight, and (3) it takes time and effort to adhere one by one (fixing the interleaving paper formed in an angle) (E.g., troublesome positioning and time for applying an adhesive).

[0003]

Therefore, the present inventor has invented a paper pallet in which a corrugated cardboard sheet is used instead of the slip sheet, and the top plate is reinforced by a bellows member obtained by bending the corrugated cardboard sheet into a bellows shape. I came to. This bellows member made of corrugated cardboard sheet (1) is much cheaper than interleaf paper, (2) it is lightweight, and (3) since it is bellows, each bent part is located parallel to each other. There is an advantage that work such as positioning when fixing to a top plate or the like is extremely easy.

However, when the corrugated cardboard sheet is bent in a bellows shape, the so-called flute structure, which is the core of the corrugated cardboard sheet in the bent portion, is crushed, and the strength of the bent portion of the bellows member and the periphery thereof is greatly reduced. This causes a problem of lowering. In addition, a considerable stress is required to bend the corrugated cardboard sheet into a bellows structure, so that an expensive dedicated machine for bending the corrugated cardboard sheet must be introduced.

Accordingly, the present invention provides a paper pallet which uses a corrugated cardboard sheet bellows member, prevents the strength of the bent portion of the bellows member and the periphery thereof from deteriorating, and has a large strength and is inexpensive and lightweight. As an issue.

Another object of the present invention is to provide a paper pallet which uses a corrugated member made of a corrugated cardboard sheet, does not require a special dedicated machine, can be easily assembled and manufactured, and has a low manufacturing cost. And

[0007]

According to a first aspect of the present invention, there is provided a paper pallet including a bellows member and a bellows holding member.
The bellows member is made of a corrugated cardboard sheet, and the bellows member is provided with a half-cut end formed by cutting except for the liner on the valley side of each bent portion.

According to the present invention, since the bellows member made of corrugated cardboard is used, a strong, inexpensive and lightweight paper pallet can be realized.

Further, according to the present invention, since the bellows member is provided with a half-cut end formed by cutting except for the liner on the valley side of each bent portion, the following six effects can be obtained.

First, since the liner on the mountain side of the bent portion and the flute of the center core are cut, the bent portion does not collapse.

Second, since the connection of the bent portions is maintained by the liner on the valley side, the bent portions are parallel to each other, which facilitates work such as positioning when fixing to the top plate or the like. In addition, the manufacturing cost can be reduced.

Third, since only the valley-side liner is required to bend the bellows member, a special dedicated machine is not required, the assembly can be easily manufactured, and the manufacturing cost can be reduced. Can be.

Fourth, when applying an adhesive to each bent portion of the bellows member, an equal amount of the adhesive can be applied uniformly to all the half cut ends in one step. That is, since each bent portion of the bellows member is cut except for the liner on the valley side, each bellows plate can be folded until it comes into contact with each other, and in this state, each half-cut end is aligned on the same plane. be able to. Therefore, the half-cut ends aligned on the same plane can be lightly immersed in the liquid surface of the adhesive tank, and the operation of applying the adhesive to the bellows member can be performed accurately and easily. In addition, since the bellows member can be folded, it is possible to apply the adhesive using a relatively small adhesive tank.

Fifth, if an adhesive is applied to each bent portion of the bellows member, the strength of each bent portion can be greatly improved. That is, the cut ends of the cut liner and flute are opened at the semi-cut end, and the end face of the paper fiber and the gap inside the paper are exposed at these cut ends. Since the end face of the paper fiber is excellent in liquid permeability, the adhesive is well permeated. Then, the strength of the half-cut end is greatly improved by the hardening of the permeated adhesive. As an adhesive having such an effect of increasing the strength, an adhesive mainly containing phenol or isocyanate which reacts with moisture in paper is particularly preferable. Vinyl acetate-based, SBR-based, acrylic-based and copolymers thereof, or blends of emulsions thereof can also be used.

Sixth, since two half-cut ends are formed at each bent portion, the area of adhesion to the bellows holding member and the like is increased, and the bellows member can be more firmly fixed.

The bellows holding member is a member for holding the bellows structure of the bellows member. For example, a top plate or a leg member adhered to a bent portion of the bellows member, or an end face of the bellows member. Representative examples include a bonded reinforcing plate and a protective member. However, as will be described later, the bellows member and the bellows holding member need not be fixed by bonding, and all are included irrespective of the number, form, or material of the bellows as long as the bellows structure is maintained.

According to a second aspect of the present invention, there is provided a paper pallet including a bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet, and the bellows member has a part of each bent portion completely. In this case, a cut end formed by cutting was provided.

According to this invention, by providing a corrugated cardboard sheet bellows member with a cut end formed by completely cutting a part of each bent portion, the same effect as that of the invention described in claim 1 is provided. The effect can be obtained.

Further, in the present invention, a cut end can be provided at each bent portion by cutting only from one side of the corrugated cardboard sheet. Therefore, the blank sheet manufacturing process can be completed in one process using the existing punching device, and the manufacturing cost can be reduced.

In the paper pallet according to the third aspect of the present invention, the extending direction of the flute of the corrugated cardboard sheet of the bellows member is perpendicular to the extending direction of the bent portion.

According to the present invention, the direction of extension of the flute of the corrugated cardboard sheet of the bellows member is perpendicular to the direction of extension of the bent portion, that is, the direction of load of the cargo mounted on the pallet. In addition, the pressure resistance against the load can be increased.

Further, according to the present invention, when forming the semi-cut end according to the first aspect, even if the flute of the center core is not cut completely, but if a certain cut is formed in the flute, By folding the liner on the valley side, the remaining portion of the flute is broken starting from the cut of the flute, and the flute can be completely cut. Therefore, a cardboard sheet having low dimensional stability can be used as a material for the paper pallet according to the present invention.

According to a fourth aspect of the present invention, there is provided a paper pallet including a bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet and a fork insertion portion formed in a part of the bellows plate of the bellows member. It is provided in the direction orthogonal to the extending direction of the bent portion of the bellows member.

According to the present invention, a portion of the bellows plate of the bellows member is cut off and the like, and the formed fork insertion portion is provided in a direction orthogonal to the extending direction of the bent portion of the bellows member, so that the lower part of the bellows member is provided. Therefore, a leg member for securing a space for inserting a fork of a forklift is not required.
Therefore, the material cost of the leg member becomes unnecessary, and the manufacturing process of the pallet can be simplified.

Further, since the fork insertion portion is formed on a part of the bellows plate, the fork insertion portion can be cut at the same time in a blank sheet manufacturing process for obtaining a bellows member from the corrugated cardboard sheet, thereby simplifying the manufacturing process. can do.

According to the present invention, the fork of the forklift can be inserted perpendicularly to the bending direction of the bellows member, so that the high rigidity obtained by forming the bent portion of the bellows member can be effectively utilized. it can. Therefore, when the pallet is lifted by the fork of the forklift, high pressure resistance and bending strength can be secured.

Further, according to the present invention, the shape and size of the fork insertion portion can be freely selected, and an ideal fork insertion portion can be obtained.

In the paper pallet according to the fifth aspect of the present invention, the bellows holding member is a box housing the bellows member.

According to the present invention, since the bellows holding member is a box housing the bellows member, the bellows member is protected by the box, and the bellows member can be prevented from being damaged.
In particular, since the end face of the bellows member is covered, it is possible to prevent the portion from being caught and damaged by another during the movement of the pallet.

Further, according to the present invention, the vertical wall of the box receives the force for pushing and expanding the bellows structure of the bellows member applied by the load of the cargo in the horizontal direction. The bellows structure can be maintained without fixing to the holding member. This is because when the bellows member is housed inside the box, the bellows member is naturally arranged at an appropriate position in the box due to the restoring force of the bent portion, that is, at a position where the restoring forces of the adjacent bent portions are balanced. Because it is done. Therefore, it is possible to omit the fixing of the bellows member by bonding, and in this case, it is possible to reduce the manufacturing cost.

According to a sixth aspect of the present invention, there is provided a paper pallet provided with a fork insertion portion protection member for covering all or a part of the bellows member end face inside the fork insertion portion.

According to the present invention, the strength of the pallet can be prevented from being reduced by providing the fork insertion portion protection member that covers all or a part of the end surface of the bellows member inside the fork insertion portion. That is, when the fork of the forklift is at an inappropriate angle with respect to the fork insertion portion, that is, when the extending direction of the fork insertion portion does not match the insertion direction of the fork, the fork tip collides with the bellows member end face and is damaged. Therefore, the bellows member end face is protected from damage due to collision with the fork by the fork insertion portion protection member.

In the paper pallet according to the present invention, the surplus portion formed after the formation of the fork insertion portion is connected to the upper side of the fork insertion portion in the direction opposite to the bending direction of the bent portion of the bellows member. It is folded.

According to the present invention, when the fork of the forklift is inserted into the fork insertion portion and lifted, the load concentrates on the upper side of the fork insertion portion, but the upper side is strengthened by the extra portion generated after the formation of the fork insertion portion. Destruction of the insertion portion can be prevented. Further, since the surplus portion of the fork insertion portion does not become waste material, it is possible to reduce waste material disposal costs.

The paper pallet according to the invention of claim 8 is provided with a second fork insertion portion orthogonal to the fork insertion portion, and the bent portion is perpendicular to the extending direction of the second fork insertion portion. An extended second bellows member is provided.

According to the present invention, the fork of the forklift can be inserted from any of the four directions of the pallet, and the fork is orthogonal to the extending direction of the bent portion of the bellows member. Strength can be secured.

According to a ninth aspect of the present invention, there is provided a paper pallet including a bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet and extends in a direction orthogonal to the extending direction of the bent portion of the bellows member. Is provided.

According to the present invention, despite the four-sided pallet, the reinforcing member extending in the direction perpendicular to the bending direction of the bellows member is provided, so that high strength is ensured regardless of which direction the fork is inserted. can do.

According to a tenth aspect of the present invention, there is provided a paper pallet having a plurality of bellows members, the bellows members being made of corrugated cardboard sheets, and the extending directions of the bent portions of the bellows members are orthogonal to each other. That is, the plurality of bellows members are stacked and provided.

According to the present invention, the bent portions of the plurality of bellows members are orthogonal to each other in spite of the four-sided pallet, so that high strength can be ensured even if the fork is inserted from any direction. it can.

[0041]

Embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment.

The two-sided pallet 1 of the first embodiment
Is a corrugated cardboard sheet top plate 11, a corrugated cardboard bellows member 2 having a bent portion 8 adhered and fixed to the lower surface of the top plate, and a corrugated cardboard sheet having the bellows member bent portion 9 adhered and fixed. Bottom plate 12 and two leg members 13 adhered to the lower surface of the bottom plate.

In this pallet, bellows holding members for holding the bellows structure of the bellows member 2 are a top plate 11 and a bottom plate 12.

As shown in FIG. 2, the blank sheet of the bellows member 2 has a half-cut line 16 cut at each bent portion of the bellows member except for the liner on the valley side and a valley fold line 17 provided on the valley-side liner. It comprises a plurality of bellows plates 3 connected in series. The half cut line 16 and the valley fold line 17 are provided alternately on the front liner side and the back liner side for each adjacent bent portion.

Flute 7 of corrugated cardboard sheet of bellows member 2
Is an orthogonal direction to the extending direction of the bent portion. Therefore, the extending direction of the flute 7 coincides with the load direction of the loaded cargo.

The half-cut line does not have to completely cut the central flute 7 when cutting. If some cuts are formed in the flute 7,
This is because the half-cut line is orthogonal to the direction in which the flute 7 extends, so that when the liner on the valley side is folded, the remaining portion (uncut portion) of the flute is broken starting from the cut.

The bellows member 2 is bent as shown in FIG. That is, in the bent portion 8, the surface liner 5
When viewed from the side, the valley fold line 17 of the back liner 6 is bent so as to form a mountain shape. Next, in the adjacent bent portion 9, the valley fold line 17 of the surface liner 5 is bent so as to have a valley shape when viewed from the surface liner 5 side.

When the bellows member 2 is bent as described above,
A half cut end 4 which is a cut surface of the liner and the flute cut at the bent portion is exposed (see FIG. 3). Further, the valley fold line is folded 180 degrees so that the adjacent bellows plates 3 are in contact with each other, the bellows members are folded up, and the half cut ends 4 are aligned on the same plane. The gathered surface of the half-cut end appears as a flat surface on the upper and lower surfaces of the folded bellows member.

Next, one of the upper and lower half-cut ends of the bellows member is lightly immersed in the liquid surface of an adhesive tank of a phenol or isocyanate adhesive, and the adhesive is applied.
Invert the bellows member, and slightly dip the remaining assembly surface into the adhesive tank. At this time, the adhesive penetrates into the end faces of the paper fibers exposed on the cut surface of the liner and flute at the peak of the half-cut end, the gap inside the paper, and the fibers of the liner on the valley side loosened by the valley fold line.

After the completion of the bonding step, the folded bellows member 2 is spread until the bellows plate becomes a bellows shape in which the relative angle of each bellows plate becomes a predetermined angle.
Adhere to 2. As shown in FIG. 3, the half cut ends of the two bellows plates 3 adjacent to each other at one bent portion serve as an adhesive portion. Therefore, the bonding area is greatly increased as compared with the top of the bent portion formed by simply bending the corrugated cardboard sheet without providing a half-cut line.

The leg member 13 comprises an M-shaped bellows member 14 and a leg bottom plate 15. The M-shaped bellows member 14 is composed of two inclined bellows plates at the center and vertical plates vertically arranged on both outer sides thereof. Further, the bellows member 1
The extending direction of the three bent portions 4 is the above-mentioned bellows member 2
Since it is orthogonal to the extending direction of the bent portion, the load of the bellows member 2 can be efficiently received. The method of manufacturing the leg member is based on the method of manufacturing the bellows member 2 and the like.
The upper two bent portions of the bellows member 13 are adhered to the lower surface of the bottom plate 12, and the lower bent portion at the center of the bellows member 13 and the two completely cut ends below the both sides of the bellows member 13 are combined into a leg bottom plate. 15 and adhere to the upper surface.

Next, a second embodiment is shown in FIGS.

Four-sided pallet 21 of the second embodiment
Is a corrugated cardboard sheet top plate 31, a corrugated cardboard sheet bellows member 22 having a bent portion 26 bonded and fixed to the lower surface of the top plate, and a corrugated cardboard sheet bonded and fixed to the bent portion 27 of the bellows member. A bottom plate 32, four leg members 33 adhered to the lower surface of the bottom plate, and a seat board 34 made of a cardboard sheet adhered and fixed to the lower surface of the leg members.

As shown in FIG. 6, the blank sheet of the bellows member 22 has a full cut line 35 obtained by completely cutting a part of each bent portion, and a mountain fold line 3 provided at a portion excluding the full cut line 35.
6 or a plurality of bellows plates 23 connected continuously via the valley folding line 37. That is, in the mountain-shaped bent portion 26 bonded to the lower surface of the top plate 31, the entire cut line 35 and the mountain-fold line 36
Are alternately provided, and all cut lines 35 and valley fold lines 37 are alternately provided in the valley-shaped bent portion 27 adhered to the upper surface of the bottom plate 32.

The entire cutting line 35 is for cutting all of the front liner, the center flute, and the back liner. Then, when each bent portion is bent, each full cut line 35 forms a pair of cut ends 24. That is, as shown in FIG. 7, in the mountain-shaped bent portion 26 bonded to the lower surface of the top plate 31, all cut lines 35 form the cut ends 24 that are open upward, and the valleys are bonded to the upper surface of the bottom plate 32. In the bent part 27 of the mold, the entire cutting line 35 forms the cut end 24 which opens downward.

As described above, since the entire cutting line 35 cuts all of the front liner, the center flute, and the back liner, any one of the front and back surfaces of the corrugated cardboard sheet of the material, that is, one side The blank sheet of the bellows member 22 can be obtained by only one punching process using an existing punching device.

The leg member 33 is composed of one blank sheet. That is, the leg member 33 is formed by connecting a predetermined number of a plurality of bellows plates via a half-cut line cut at each bent portion except for a valley-side liner and a valley fold line provided on the valley-side liner. It is. The half-cut line and the valley fold line are provided alternately on the front liner side and the back liner side for each adjacent bent portion.

Then, the bent portion having the half-cut line and the valley-fold line is folded, and the adjacent bellows plates are folded so as to be in contact with each other. Place on the upper and lower surfaces. Finally, the upper and lower surfaces are slightly immersed in an adhesive bath, the upper surface is bonded to the lower surface of the bottom plate 32, and the seat plate 34 is bonded to the lower surface.

Next, a third embodiment will be described with reference to FIGS.
Shown in

The two-way pallet 41 of the third embodiment
Is a bellows member 42 provided with a fork insertion portion 57 formed in a part of the bellows plates 43, 44 in a direction orthogonal to the extending direction of the bent portions 47, 48 of the bellows member, and the bellows member is housed inside. It comprises a lid 60 and a body 70 constituting a box, and a fork insertion portion protection member 80 for covering all or a part of the bellows member end face inside the fork insertion portion.

The blank sheet of the bellows member 42 is shown in FIG.
(A) and (B). FIG. (A) is a front view of the blank sheet, and FIG. (B) is a back view thereof. This blank sheet includes a half-cut line 50B and a valley fold line 50B cut at each bent portion 47 of the bellows member except for the liner on the valley side.
A, and at each bend 48, a full cut line 5
1A and mountain fold line 51B (valley fold line 51C on the back side)
And a plurality of bellows plates 43 and 44 connected in series.

A fork insertion portion 57 is formed in a part of the bellows plates 43, 44 in a direction perpendicular to the extending direction of the bent portions 47, 48 of the bellows member. Further, extra portions 45, 4 generated after the fork insertion portion 57 is formed by the full cut lines 55, 56.
6 are connected by a mountain fold line 54B (a valley fold line 54C on the back side) provided between all the cut lines 54A, and are also maintained connected at the upper sides 52, 53 of the fork insertion portion. The upper sides 52 and 53 are valley fold lines 52A and 53A on the front side of the blank sheet, but are half cut lines 52B and 53B on the back side of the blank sheet.

As described above, by cutting the blank sheet of the bellows member 42 from the back side of the blank sheet, all the full cut lines and half cut lines can be provided at a time, and the blank sheet can be provided from both sides of the blank sheet. There is no need for cutting. This is a half cut line on one side (back side)
This is because, on the other side (front surface), instead of a half cut line, a full cut line connected by a mountain fold line or the like is provided.

As shown in FIG. 9, the blank sheet of the lid 60 is provided with a square top plate 61 provided at the center, side plates 62 connected to upper and lower sides of the top plate, and both sides of the top plate. It is formed from a corrugated cardboard sheet comprising the front plate 63. Front plate 6
3 is provided with a notch 64 constituting a fork insertion portion.
Note that the side plate and the front plate that have been raised from the top plate are bonded together with an adhesive tape 95 as shown in FIG.

The body 70 has substantially the same configuration as the lid 60, and includes a central bottom plate 71, a side plate 72, and a front plate 73.
The front plate 73 has a rectangular hole 74 forming a fork insertion portion.
Is provided.

The blank sheet of the fork insertion portion protection member 80 is made of a corrugated cardboard sheet. As shown in FIG. 12, a fork insertion portion upper surface protection plate 81 and mountain fold lines on upper and lower sides of the fork insertion portion upper surface protection plate 81 are provided. The fork insertion portion side protection plate 82 is provided continuously through the connection portion 83.

The pallet of this embodiment is assembled as follows. The bent portions 47 and 48 of the bellows member 42 are bent and folded. At the same time, the excess portions 45 and 46 generated after the formation of the fork insertion portion 57 are bent in a direction opposite to the bending direction of the bent portion 47 of the bellows member 42.

The gathering surface of the cut end 51A formed at the bent portion 48 of the bellows member 42 and the gathering surface of the cut end 54A existing at the connecting portion of the surplus portions 45 and 46 are on the same surface of the folded bellows member. appear. In addition, at the time of completion, the bellows member 4
The collective surface of each of the cut ends of the abutment 2 contacts the back surface of the top plate 61.

The bellows member 42 folded as described above is
0. At this time, the fork insertion portion 57 is
It is inserted so as to be located at the opening side of the zero. At this time, no adhesive is used. Since the bellows member 42 is expanded by the uniform restoring force of each folded line, the bellows member 42 is naturally disposed at an appropriate position inside the lid 60, that is, a position where the restoring forces of the adjacent bent portions are balanced. It is. At this time, it is desirable to press a serrated jig having an apex angle corresponding to a predetermined angle between the bellows plates 43 and 44 against the expanded bellows member 42 to adjust the bellows shape.

Next, a fork insertion portion protection member 80 that covers all or a part of the bellows member end face inside the fork insertion portion is fitted into the fork insertion portion.

Finally, the body 70 is covered from above the lid 60 to form a box, and the box is completed. In this state, the lid 60 and the body 70 are formed with extra portions 45 and 46 generated after the fork insertion portion is formed.
As a result, the upper sides 52 and 53 are strengthened, and when the fork of the forklift is inserted into the fork insertion portion and lifted, the upper side of the fork insertion portion can be prevented from being broken. In the sectional view taken along the line AA in FIG. 13 and the sectional view taken along the line BB in FIG.
The arrangement state of the surplus parts 45 and 46 generated after the formation of the fork insertion part 57 is shown.

The fourth embodiment is shown in FIGS.

Four-sided pallet 90 of the fourth embodiment
Are three top plates 91 made of a corrugated cardboard sheet, a bottom plate 140 made of a corrugated cardboard sheet, and three first adhesive members that are adhered to the lower surface of the top plate 91 and the upper surface of the bottom plate 140 and have the first fork insertion portion 99 The bellows member 92 is adhered to the lower surface of the top plate 91 and the first bellows member 92, and the three first bellows members 9
2 and a second bellows member arranged perpendicular to the direction in which the second fork insertion portion 100 extends, and six fork insertion portion protection members 13 provided on the first fork insertion portion 99.
0.

FIG. 16 shows the front side of the blank sheet of the first bellows member 92. In this blank sheet, bellows plates 94 and 95 are bent between vertical plates 93 at both ends and bent portions 96 and 9 are formed.
7 and 98 are provided continuously. Folded parts 96 and 9
8 is provided with a full cut line 102A and a mountain fold line 102B (a valley fold line on the back side. This valley fold line is not shown because it is on the back side). Further, the bent portion 97 has a half-cut line (not shown because it is on the back side) except for the liner on the valley side and the valley fold line 1 provided on the valley side liner.
01 is provided.

Further, the vertical plate 93 and the bellows plates 94 and 95 of the first bellows member 92 are provided with cutouts 110 and 112 and a rectangular hole 111 for holding the second bellows member 120. In addition, the vertical plate 93 and the bellows plates 94 and 95 include:
In order to form a fork insertion portion, a notch 113 and a rectangular hole 114 are provided.

FIG. 17 shows the front side of the blank sheet of the second bellows member 120. This blank sheet is provided between bellows plates 122, 123, 1 between vertical plates 121, 125 at both ends.
24 are continuously provided via bent portions 126, 127, 128, and 129. In the bent portions 126 and 128, all cut lines 128A and valley fold lines 128B are provided alternately. In addition, the bent portions 127 and 129 are provided with half-cut lines cut except for the liner on the valley side.

The fork insertion portion protection member 130 is shown in FIG.
As shown in the figure, the fork insertion portion upper surface protection plate 131 and the fork insertion portion side surface protection plate 132 are provided.

When the fork of the fork wrist is inserted into the first fork insertion portion 99, the extension direction of the bent portion of the first bellows member 92 is orthogonal to the insertion direction of the fork, so that sufficient strength can be secured. When a fork is inserted into the second fork insertion portion 100, the second bellows member 12
Since the extending direction of the bent portion 0 is orthogonal to the fork insertion direction, sufficient strength can be secured. Therefore, even if the fork of the forklift is inserted from any direction, a high strength can be secured because the fork is orthogonal to the extending direction of the bent portion of any bellows member.

The fifth embodiment is shown in FIGS.

The present embodiment relates to a four-sided pallet, a top plate 221 made of a corrugated cardboard sheet, a bellows member 221 made of a corrugated cardboard sheet adhered to the lower surface of the top plate, and a corrugated cardboard adhered to the lower surface of the top plate. Sheet reinforcing member 23
1, a bottom plate 212 bonded to the lower surfaces of the bellows member 221 and the reinforcing member 231, nine leg members 241 disposed on the lower surface of the bottom plate 212, and a seat plate 213 bonded to the lower surface of the leg member 241. Become.

In this embodiment, since the reinforcing member 231 extending in the direction perpendicular to the bending direction of the bellows member 221 is provided, high strength can be ensured regardless of which direction the fork is inserted.

FIG. 24 to FIG. 26 show the sixth embodiment.

In this embodiment, a four-sided pallet is used. The top plate 311 is made of corrugated cardboard, and the upper bellows member 321 made of corrugated cardboard is adhered to the lower surface of the top plate.
Intermediate plate 312 bonded to the lower surface of upper bellows member 321
A lower corrugated member 322 made of a cardboard sheet adhered to the lower surface of the intermediate plate; a bottom plate 313 adhered to the lower surface of the lower corrugated member 322;
It comprises a leg member 341 and a seat plate 314 adhered to the lower surface of the leg member 341.

In this embodiment, a plurality of bellows members 321,
Since the bent portions of the 322 are orthogonal to each other, high strength can be ensured even if the fork is inserted from any direction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a two-sided pallet according to a first embodiment. The symbol F1 indicates the direction in which the fork of the forklift is inserted.

FIG. 2 is a development view of a blank sheet of a bellows member 2 of the paper pallet shown in FIG.

FIG. 3 is a partially enlarged view of the paper pallet shown in FIG.

FIG. 4 is an explanatory view showing a state where a bent portion of the bellows member 2 shown in FIG. 2 is about to be bent.

FIG. 5 is a perspective view of a four-sided pallet according to a second embodiment. The symbols F1 and F2 indicate the insertion direction of the fork of the forklift.

6 is a development view of a blank sheet of a bellows member 22 of the paper pallet shown in FIG.

FIG. 7 is a partially enlarged view of the paper pallet shown in FIG.

FIG. 8 is a perspective view of a two-way pallet according to a third embodiment. The symbol F1 indicates the direction in which the fork of the forklift is inserted.

9 is a development view of a blank sheet of a lid 60 of the paper pallet shown in FIG.

10 is a development view of a blank sheet of the body 70 of the paper pallet shown in FIG.

11 is a development view of a blank sheet of the bellows member 42 of the paper pallet shown in FIG. (A) shows the front side of the blank sheet, and (B) shows the back side of the blank sheet.

12 is a development view of a blank sheet of the fork insertion portion protection member 80 of the paper pallet shown in FIG.

FIG. 13 is a sectional view taken along line AA of FIG. 8;

FIG. 14 is a sectional view taken along line BB of FIG. 8;

FIG. 15 is a perspective view of a four-sided pallet according to a fourth embodiment. The symbols F1 and F2 indicate the insertion direction of the fork of the forklift.

16 is a development view of a blank sheet of a first bellows member 92 of the paper pallet shown in FIG.

17 is a development view of a blank sheet of a second bellows member 120 of the paper pallet shown in FIG.

18 is a development view of a blank sheet of the fork insertion portion protection member 80 of the paper pallet shown in FIG.

FIG. 19 is an explanatory diagram of a four-sided pallet according to a fifth embodiment.

FIG. 20 is a sectional view taken along line BB of FIG. 19;

21 is a sectional view taken along line AA of FIG.

FIG. 22 is a horizontal sectional view of the leg member 241. The symbols F1 and F2 indicate the insertion direction of the fork of the forklift.

FIG. 23 is a partial perspective view of the leg member 241.

FIG. 24 is an explanatory diagram of a four-sided pallet according to a sixth embodiment.

FIG. 25 is a front view of the paper pallet shown in FIG. 24.

26 is a side view of the paper pallet shown in FIG. 24.

[Explanation of symbols]

 1, 21, 41 Paper pallet 2, 22, 42 Bellows member 3, 23, 43, 44 Bellows plate 4 Half cut end 5 Surface liner 6 Back liner 7 Flute 8, 9 Folded portion 11, 31 Top plate 12, 32 Bottom plate 13, 33 Leg member 14 Bellows member 15 Leg bottom plate 16 Half cut line 17 Valley fold line 24 Cut end 34 Seat plate 35 Full cut line 36 Mountain fold line 37 Valley fold line 45, 46 Fork insertion surplus 57 Fork insertion unit 60 Cover 70 Body 92 First bellows member 99 First fork insertion part 100 Second fork insertion part 120 Second bellows member 211, 311 Top plate 312 Intermediate plate 212, 313 Bottom plate 213, 314 Seat plate 221 Bellows member 231 Reinforcement member 241, 341 Leg member 321 Upper bellows member 322 Lower bellows member

Claims (10)

[Claims] 1. A bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet, and the bellows member has a half-cut end formed by cutting except a liner on a valley side of each bent portion. Paper pallets provided. 2. A paper provided with a bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet, and the bellows member has a cut end formed by completely cutting a part of each bent portion. Pallets. 3. The paper pallet according to claim 1, wherein an extending direction of a flute of the corrugated cardboard sheet of the bellows member is a direction perpendicular to an extending direction of the bent portion. 4. A bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet, and a fork insertion portion formed in a part of a bellows plate of the bellows member is extended by extending a bent portion of the bellows member. A paper pallet provided in the direction perpendicular to the direction in which it is located. 5. The paper pallet according to claim 4, wherein said bellows holding member is a box housing said bellows member. 6. The paper pallet according to claim 4, wherein the fork insertion portion is provided with a fork insertion portion protection member that covers all or a part of an end surface of a bellows member inside the fork insertion portion. 7. The bent portion of the bellows member is bent in a direction opposite to a bending direction of a bent portion of the bellows member while being connected at an upper side of the fork insertion portion, after forming the fork insertion portion. 7. The paper pallet according to any one of 6. 8. A second fork insertion portion orthogonal to the fork insertion portion, and a second bellows member extending a bent portion in a direction orthogonal to an extending direction of the second fork insertion portion is provided. Item 6. A paper pallet according to Item 4. 9. A bellows member and a bellows holding member, wherein the bellows member is made of a corrugated cardboard sheet, and is made of paper provided with a reinforcing member extending in a direction orthogonal to the extending direction of the bent portion of the bellows member. palette. 10. A bellows member having a plurality of bellows members, wherein the bellows members are made of a corrugated cardboard sheet, and the plurality of bellows members are laminated so that the extending directions of the bent portions of the bellows members are orthogonal to each other. Paper pallets provided.