JP6905707B2 - palette - Google Patents

Description

The present invention relates to precision machines such as personal computers and pallets suitably used for storing and transporting fruits such as strawberries and peaches.

Conventionally, wooden pallets (see, for example, Patent Document 1) have been applied to the storage of luggage and the transportation using cargo handling vehicles. In the above pallet, a low-resilience styrene-based elastomer is arranged between laminated plates to improve vibration isolation.

However, the wooden pallet weighs as heavy as 10 kg and is not easy to handle. In addition, when the wooden pallet is used for transporting the precision machine or fruits with a soft surface, there is a risk of damaging the components of the machine and the surface of the fruits due to the impact and vibration caused by the transport, and further improvements can be made. Expected.

Jitsuto No. 3177476

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a pallet that is lightweight, easy to handle, and has excellent shock and vibration absorption.

The present invention includes a plate-shaped first foam having a mounting surface on which luggage is placed, and a shock absorber arranged below the first foam, and the shock absorber is the first foam. It is a pallet characterized by having a lower hardness and a higher density than the body.

In the pallet according to the present invention, it is desirable that the lower end portion of the first foam has a first recess in which the upper end portion of the buffer is embedded.

In the pallet according to the present invention, it is desirable that the depth D1 of the first recess is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape.

The pallet according to the present invention further includes a second foam that includes a plurality of legs that support the first foam and is arranged below the buffer, wherein the buffer is the second foam. It is desirable that the hardness is lower and the density is higher than that.

In the pallet according to the present invention, it is desirable that the upper end portion of the second foam has a second recess in which the lower end portion of the buffer is embedded.

In the pallet according to the present invention, it is desirable that the depth D2 of the second recess is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape.

The pallet according to the present invention includes a plurality of legs that support the first foam, further includes a second foam arranged below the buffer, and the buffer is the second foam. The upper end portion of the second foam has a second recess in which the lower end portion of the buffer is embedded, and the depth D1 of the first recess and the second recess are higher. It is desirable that the sum D1 + D2 of the depth D2 of the recesses is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape.

In the pallet according to the present invention, it is desirable that the buffer has a compression set of 5% or less as measured in accordance with the provisions of EN ISO 1856.

In the pallet according to the present invention, it is desirable that the buffer has a mechanical loss factor of 0.05 to 0.65 measured in accordance with the provisions of DIN 53513.

In the pallet according to the present invention, it is desirable that the first foam is made of a polystyrene-polyethylene copolymer as a foam material.

In the pallet according to the present invention, it is desirable that the buffer is made of a foamed resin different from the first foam and has a smaller expansion ratio than the first foam.

In the pallet according to the present invention, it is desirable that the second foam form includes a connecting portion extending parallel to the above-mentioned mounting surface and connecting the legs.

In the pallet according to the present invention, it is desirable that the connecting portion has a ground contact surface in contact with the ground.

In the pallet according to the present invention, it is desirable that the connecting portion has a through hole penetrating the connecting portion in the thickness direction.

The pallet of the present invention includes a plate-shaped first foam having a mounting surface on which luggage is placed, and a shock absorber arranged below the first foam. Since the main body of the pallet including the mounting surface is formed of the first foam having a density lower than that of the buffer, it is lighter and easier to handle than the conventional wooden pallet. Further, since the cushioning body has a lower hardness than the first foam, it is excellent in absorbing shock and vibration. Therefore, the shock and vibration absorbing action of the first foam itself is further strengthened by the cushioning body, and a lightweight pallet having excellent shock and vibration absorbing properties can be easily obtained.

It is a perspective view which shows the schematic structure of one Embodiment of the pallet of this invention. It is an exploded perspective view which looked at the pallet of FIG. 1 from above. FIG. 5 is an exploded perspective view of the pallet of FIG. 1 as viewed from below. It is sectional drawing of the pallet of FIGS. 1 to 3. FIG. 4 is a cross-sectional view showing an enlarged view of the shock absorber and its peripheral portion when the pallet of FIG. 4 loaded with luggage receives a large impact from the ground. It is a graph which shows the hardness of the foaming resin which constitutes a 1st foam, a 2nd foam and a buffer. It is sectional drawing of the modification of the pallet of FIG. It is sectional drawing of another modification of the pallet of FIG. It is sectional drawing of still another modification of the pallet of FIG. It is a photograph which shows the procedure of the drop test about a plurality of kinds of pallets including the pallet of FIG. 1 as an example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a schematic configuration of the pallet 1 of the present embodiment. The pallet 1 includes a first foam 2, a second foam 3, and a buffer 4.

The first foam 2 is composed of, for example, a first foamed resin obtained by foaming a polystyrene-polyethylene copolymer or the like. The resin obtained by foaming the polystyrene-polyethylene copolymer is more flexible than ordinary expanded polystyrene (EPS), and can suppress damage and wear of the first foam 2 due to the lack of beads.

The first foam 2 is formed in a plate shape and has a mounting surface 21 on which the luggage L is mounted. The size of the mounting surface 21 is 1200 mm in length × 1000 mm in width (or 1100 mm in length × 1100 mm in width), and the pallet 1 is suitable for transporting a load L having a weight of 500 kg. A PP (polypropylene) band 5 is wound around the luggage L and the first foam 2 as needed to prevent the luggage L from being misaligned or collapsing.

The second foam 3 is arranged below the first foam 2. The second foam 3 is composed of, for example, a second foamed resin obtained by foaming a polystyrene-polyethylene copolymer or the like. In the present embodiment, the same foamed resin is applied to the first foamed resin and the second foamed resin. Different foamed resins may be applied to the first foamed resin and the second foamed resin, and the same foamed resin having different foaming ratios may be applied.

The second foam 3 includes a plurality of legs 31 that support the first foam 2. The leg portion 31 is formed in a rectangular shape in a plan view and a side view. The legs 31 are arranged at a plurality of positions arranged in a grid shape including the four corners of the second foam 3. A fork insertion space 32 for inserting a fork of a cargo handling vehicle (not shown) is formed between the adjacent legs 31. As a result, the pallet 1 loaded with the cargo can be easily moved by using the cargo handling vehicle.

The buffer 4 is arranged between the first foam 2 and the second foam 3. In the present embodiment, the cushioning body 4 is made of a foamed resin different from the first foamed resin and the second foamed resin. More specifically, the cushioning body 4 is composed of an ether-based or ester-based polyurethane elastomer. The buffer 4 may have a structure in which a plurality of plate-shaped foamed resins are laminated in layers. The ether-based polyurethane elastomer has excellent water resistance, and the ester-based polyurethane elastomer has excellent strength.

The foamed resin composed of the polyurethane elastomer has a larger maximum compressibility that can be restored to the original shape than the foamed resin composed of the polystyrene-polyethylene copolymer, and the maximum compressibility is 70 to 80%. The maximum compressibility of the foamed resin composed of the polystyrene-polyethylene copolymer is about 4 to 8%.

The buffer body 4 of the present embodiment is arranged between the first foam 2 and the leg portion 31. It is a block body formed in a rectangular shape in a plan view and a side view. The buffer 4 is fixed to the first foam 2 and the second foam 3 by, for example, a double-sided adhesive tape (not shown). The buffer 4 may be fixed to the first foam 2 or the like with an adhesive. As a result, the first foam 2, the second foam 3, and the buffer 4 are integrated.

In the pallet 1 of the present invention, since the main body portion of the pallet 1 including the mounting surface 21 is formed of the first foam 2 having a density lower than that of the buffer 4, it is lighter and easier to handle than the conventional wooden pallet. It becomes. For example, the pallet 1 of the present embodiment having the first foam 2 and the second foam 3 produced by the expanded polystyrene-polyethylene copolymer as a main part weighs about 2.0 kg, and is used by women. It is easy for people to carry. In addition, the weight reduction of the pallet 1 reduces the total weight of the cargo and the pallet 1, and in particular, the transportation cost at the time of air transportation is significantly reduced.

Further, since the buffer 4 has a hardness (static Young's modulus) smaller than that of the first foam 2 and the second foam 3, it is excellent in absorption of impact and vibration. Therefore, the shock and vibration absorbing action of the first foam 2 and the second foam 3 itself is further strengthened by the cushioning body 4, and the pallet 1 which is lightweight and has excellent shock and vibration absorption can be easily obtained.

In a foamed resin made by foaming the same resin material, its hardness and density usually depend on the foaming ratio, and in a foamed resin having a large foaming ratio, both hardness and density tend to be low. However, in the present embodiment, since the buffer 4 is composed of the ether-based polyurethane elastomer having a lower hardness before foaming than the polystyrene-polyethylene copolymer, the expansion ratio of the ether-based polyurethane elastomer is set to the polystyrene-polyethylene copolymer. The hardness of the buffer 4 can be set lower than that of the first foam 2 and the second foam 3 while suppressing the foaming ratio to be smaller than that of the first foam 2. As a result, the buffer 4 having a lower hardness and a higher density than the first foam 2 and the second foam 3 can be easily realized.

As shown in FIGS. 2 and 3, a first recess 24 is formed at the lower end of the first foam 2. The first recess 24 is recessed upward from the lower end surface 23 of the first foam 2 in a shape corresponding to the upper end of the buffer 4. Then, the upper end portion of the buffer body 4 is embedded in the first recess 24. As a result, the buffer 4 is accurately and firmly positioned with respect to the first recess 24, and the horizontal displacement of the buffer 4 with respect to the first foam 2 is suppressed.

Similarly, as shown in FIGS. 2 and 4, a second recess 34 is formed at the upper end of the second foam 3. The second recess 34 of the present embodiment is formed at the upper end of the leg 31. The second recess 34 is recessed downward from the upper end surface 33 of the second foam 3 in a shape corresponding to the lower end of the buffer 4. Then, the lower end portion of the buffer body 4 is embedded in the second recess 34. As a result, the buffer 4 is accurately and firmly positioned with respect to the second recess 34, and the horizontal displacement of the buffer 4 with respect to the second foam 3 is suppressed.

FIG. 5 shows the shock absorber 4 and its peripheral portion when a large impact load is applied. When an impact is applied to the pallet 1 on which the luggage L (see FIG. 1) is placed, the buffer 4 absorbs the impact while being greatly compressed and deformed. When the impact load is excessively large, the cushioning body 4 is compressed to the extent that it is accommodated in the space in the first recess 24 and the second recess 34, and the lower end surface 23 of the first foam 2 and the upper end surface of the second recess 34 Contact with 33. As a result, the impact load is dispersed, the destruction of the first foam 2 and the second foam 3 is suppressed, and the excessive compression of the buffer 4 is suppressed.

The ratio (D1 + D2) / T of the sum D1 + D2 of the depth D1 of the first recess 24 and the depth D2 of the second recess 34 and the thickness T (see FIG. 4) of the buffer 4 when no load is applied is the buffer 4 Is greater than the maximum compressibility that can be restored to its original shape. That is, it is desirable that the sum D1 + D2 is larger than the thickness when the buffer 4 is compressed to the maximum compressibility that can be restored to the original shape. When the ratio (D1 + D2) / T is larger than the maximum compression rate of the buffer 4, the compression rate of the buffer 4 in the state shown in FIG. 5 is smaller than the maximum compression rate. Body 4 is easily restored to its original shape. As a result, the damping action of the cushioning body 4 is maintained even when the pallet 1 is used in a situation where a large impact or vibration is repeated.

Of the first recess 24 and the second recess 34, only one may be provided and the other may be omitted. In the form in which only the first recess 24 is provided, the ratio (D1) / T of the depth D1 of the first recess 24 to the thickness T of the buffer 4 when no load is applied is such that the buffer 4 is restored to its original shape. It is desirable that it is larger than the maximum possible compression ratio. That is, it is desirable that the sum D1 is larger than the thickness when the buffer 4 is compressed to the maximum compressibility that can be restored to the original shape. In the form in which only the second recess 34 is provided, the ratio (D2) / T of the depth D2 of the second recess 34 to the thickness T of the buffer 4 when no load is applied is such that the buffer 4 is restored to its original shape. It is desirable that it is larger than the maximum possible compression ratio. That is, it is desirable that D2 is larger than the thickness when the buffer 4 is compressed to the maximum compressibility that can be restored to its original shape. As a result, the damping action of the cushioning body 4 is maintained even when the pallet 1 is used in a situation where a large impact or vibration is repeated.

FIG. 6 shows the static spring constants (deflection-load curve) of the polystyrene-polyethylene copolymer foam resin constituting the first foam 2 and the second foam 3 and the ether-based polyurethane foam resin constituting the cushioning body 4. The measured value is shown. The size of the polystyrene-polyethylene copolymer foamed resin used for the measurement was 125 mm in length, 125 mm in width and 25 mm in thickness, and the size of the ether-based polyurethane foamed resin was 100 mm in length, 100 mm in width and 25 mm in thickness. be. The static spring constant of each foamed resin is determined by measuring the load when each foamed resin is compressed with a stroke (deflection) of 11.4 mm / min using AG-IS50kN manufactured by Shimadzu Corporation. Obtained.

When the pallet 1 of the present embodiment shown in FIG. 1 is used for transporting a luggage L having a weight of 500 kg, the foamed resin constituting the first foamed material 2 and the second foamed material 3 is made of polystyrene having a foaming ratio of 20 to 40. -Polyethylene copolymer foam resin is preferably used. As such a copolymer foamed resin, the static spring constant of the copolymer foamed resin A having a foaming ratio of 30 is represented by a solid curve C1 in FIG.

When the pallet 1 is used for transporting a load L having a weight of less than 500 kg, the buffer 4 has a polyurethane foam ^{having an allowable surface pressure (static load per allowable unit area) of 0.005 to 0.20 N / mm 2.} Resin is preferably used. As such a polyurethane foam resin, the allowable surface pressure ^{of the polyurethane foam resin B is 0.19 N / mm 2} , and the static spring constant of the polyurethane foam resin B is the curve C2 of the broken line, and the allowable surface pressure is 0.04 N / mm ^2. The static spring constant of the resin C is represented by the curve C3 of the one-point chain wire ^{, and the static spring constant of the polyurethane foam resin D having an allowable surface pressure of 0.01 N / mm 2} is represented by the curve C4 of the two-point chain wire.

In FIG. 6, since the amount of deflection [mm] is represented on the horizontal axis and the load [N] is represented on the vertical axis, the static spring constant of each foamed resin is represented by the slope of each curve C1 to C4. It is generally known that the static spring constant of a foamed resin fluctuates depending on the deflection and the load. Each of the foamed resins used in the pallet 1 of the present embodiment bends in the first region R1 in which the static spring constant gradually increases with increasing load and in a substantially constant static spring constant with increasing load. A second region R2 that increases, a third region R3 in which the static spring constant gradually decreases as the load increases, and a fourth region R4 in which the deflection increases with a substantially constant static spring constant as the load increases. have.

In FIG. 6, the first region R1, the second region R2, the third region R3, and the fourth region R4 are clearly shown only for the curve C1, but the same applies to the other curves C2 to C4. The first region R1, the second region R2, the third region R3, and the fourth region R4 are distributed in this order in accordance with the increase in the load.

The static spring constant in the second region of the polyurethane foam resin constituting the cushioning body 4 depends on the assumed impact load, the pressure receiving area (the area of the cushioning body 4 in a plan view), the thickness of the cushioning body 4, and the like. Will be determined as appropriate.

When the static spring constant in the second region of the polyurethane foam resin is excessively small with respect to the static spring constant in the second region R2 of the copolymer foam resin, the pressure receiving area is increased in order to support a large impact load. It is necessary to design a large size, and it becomes difficult to secure a sufficient fork insertion space 32. Further, the maximum compression ratio is likely to be reached even with a small impact load, and the shock absorber 4 may not be able to sufficiently absorb the impact. In addition, the shock absorbing action of the first foam 2 and the second foam 3 may not be sufficiently exhibited.

When the static spring constant in the second region of the polyurethane foam resin is excessively large with respect to the static spring constant in the second region R2 of the copolymer foam resin, the buffer 4 causes a relatively small impact or vibration. It may not be sufficiently absorbed. Further, the first foam 2 may be excessively deformed, and the load applied to the load L mounted on the mounting surface 21 may become non-uniform.

From the above viewpoint, the static spring constant in the second region R2 of the copolymer foamed resin, which is particularly preferable, is 2000 to 3000 N / mm, and the static spring constant in the second region of the polyurethane foamed resin, which is particularly preferable, is 150. It is ~ 300 N / mm.

The hardness of each foamed resin can be measured using, for example, an Asker A type hardness tester (manufactured by Polymer Meter Co., Ltd.). The desired hardness of the copolymer foam resin at 23 ° C. is 38 to 48. The desired hardness of the polyurethane foam resin at 23 ° C. is 6 to 36, and the particularly desirable hardness is 15 to 21.

It is desirable that the buffer 4 has a compression set of 5% or less as measured in accordance with the regulations of EN ISO 1856. In such a cushioning body 4, the cushioning body 4 is easily restored to its original shape after the impact is settled, and even when the pallet 1 is used in a situation where a large impact or vibration is repeated, the cushioning body 4 is used. The damping effect of is maintained.

The buffer 4 preferably has a mechanical loss factor of 0.05 to 0.65 as measured in accordance with DIN 53513. If the mechanical loss factor is less than 0.05, the damping of impact and vibration becomes insufficient, and there is a risk that the swaying and bouncing (bound) of the load when receiving the impact and vibration will increase. If the mechanical loss factor exceeds 0.65, the buffer 4 cannot be sufficiently deformed, and the shock absorption may be insufficient.

The polyurethane foam resin described above is particularly desirable for the cushioning body 4, but another material having a lower hardness (static spring constant) than the first foam, a high density, and excellent shock absorption. For example, a gel-like resin containing silicone as a main raw material may be applied.

As shown in FIGS. 1 to 4, the buffer 4 is embedded in the first recess 24 and the second recess 34 so as not to protrude into the fork insertion space 32, so that the first foam 2 and the second foam 2 are foamed. It is sandwiched by the body 3. As a result, contact between the fork and the buffer 4 is avoided, and damage to the buffer 4 is suppressed.

As shown in FIGS. 2 to 4, the second foam 3 includes a connecting portion 35 connecting the leg portions 31. The connecting portion 35 extends in parallel with the mounting surface 21 of the first foam 2.

In the loading and unloading work of the cargo L using the cargo handling vehicle, the pallet 1 may be lowered to the ground or the like in an obliquely tilted posture. In this case, only some of the legs 31 out of the plurality of legs 31 come into contact with the ground in an inclined posture, and the load of the luggage L is concentrated. The sticking may be released and the leg portion 31 may fall off from the buffer body 4.

In the present embodiment, since the adjacent leg portions 31 are connected by the connecting portion 35, the load of the luggage L is passed through the connecting portion 35 even when the pallet 1 is lowered to the ground or the like in an inclined posture. Distributed across all legs 31. As a result, the detachment of the leg portion 31 from the buffer body 4 can be suppressed.

The connecting portion 35 has a ground contact surface 36 in contact with the ground. As a result, the second foam 3 is closed at the lower end of each leg 31, so that the deformation of the leg 31 can be suppressed and the leg 31 can be further suppressed from falling off from the buffer 4.

The connecting portion 35 is provided with a through hole 37. The through hole 37 penetrates the connecting portion 35 in the thickness direction. As a result, the leg portion 31 can be visually recognized from the side of the ground contact surface 36.

As shown in FIG. 3, for example, the pallet 1 is assembled with the first foam 2, the second foam 3, and the buffer 4 turned upside down. At this time, since the through hole 37 is provided in the connecting portion 35 of the second foam 3, the leg portion 31 can be visually recognized from the side of the ground contact surface 36, so that the second foam with respect to the first foam 2 and the buffer 4 is formed. Alignment of body 3 becomes easier,
Work efficiency is improved.

FIG. 7 is a cross-sectional view of pallet 1A, which is a modification of pallet 1 of FIG. The above-described pallet 1 configuration can be adopted for a portion of the pallet 1A that is not described below.

The pallet 1A is different from the pallet 1 in that the connecting portion 35A is provided at the upper end portion of the second foam 3A and connects the upper end portions of the respective leg portions 31. The configuration of the first foam 2, the buffer 4, and the leg 31 is the same as that of the pallet 1. Therefore, the pallet 1A has the same shock absorption performance as the pallet 1.

FIG. 8 is a cross-sectional view of pallet 1B, which is another modification of pallet 1 of FIG. The above-mentioned configuration of the pallet 1 can be adopted for the portion of the pallet 1B that is not described below.

The pallet 1B is different from the pallet 1 in that the connecting portion 35 is eliminated. Therefore, the second foam 3B is divided into a plurality of parts, each of which is fixed to the buffer 4 at the upper end of the leg portion 31. The configuration of the first foam 2, the buffer 4, and the leg 31 is the same as that of the pallet 1. Therefore, the pallet 1B has the same shock absorption performance as the pallet 1. With the pallet 1B, it is possible to further reduce the weight and cost.

FIG. 9 is a cross-sectional view of the pallet 1C, which is still another modification of the pallet 1 of FIG. The above-mentioned configuration of the pallet 1 can be adopted for the portion of the pallet 1C that is not described below.

In the pallet 1C, the second foam 3 is omitted, and a plurality of leg portions 25 are formed so as to project downward from the main body portion of the first foam 2C. A first recess 24 is formed in the lower end of the first foam 2C, that is, the lower end of the leg 25, and the upper end of the buffer 4 is embedded in the first recess 24.

The structure of the buffer 4 is the same as that of the pallet 1. Therefore, the pallet 1C has the same shock absorption performance as the pallet 1. A protective plate 6 for protecting the buffer 4 is provided on the lower end surface of the buffer 4. With the pallet 1C, it is possible to further reduce the weight and cost.

Although the pallet 1 of the present invention has been described in detail above, the present invention is not limited to the above-mentioned specific embodiment, but is modified to various embodiments. That is, the pallet 1 includes at least a plate-shaped first foam 2 having a mounting surface 21 on which the luggage L is placed, and a buffer 4 arranged below the first foam 2. No. 4 may be configured to have a lower hardness and a higher density than the first foam 2.

The pallet 1 and the like, which form the basic structure of FIG. 1, were prototyped based on the specifications in Table 1. The length of each pallet is 1200 mm and the width is 1000 mm. In Example 1, a cushioning body made of polyurethane foam resin C whose hardness is represented by the curve C3 of FIG. 6 is used, and the length is 100 mm, the width is 100 mm, and the thickness is 25 mm.

For each of the pallets of Examples and Comparative Examples, a load of 500 kg was applied to the mounting surface and the acceleration when dropped from a height of 300 mm was measured as shown in FIG. The smaller the acceleration value, the better the shock absorption performance of the pallet.

As shown in Table 1, it was confirmed that the pallet of the example had a smaller acceleration when dropped and was excellent in shock absorption performance as compared with the comparative example.

1: Pallet 2: First foam 3: Second foam 4: Buffer 21: Mounting surface 23: Lower end surface 24: First recess 31: Leg 33: Upper end surface 34: Second recess 35: Connecting portion 36: Ground surface 37: Through hole A: Copolymer foamed resin B: Polyurethane foamed resin C: Polyurethane foamed resin D: Polyurethane foamed resin L: Luggage

Claims (14)

A plate-shaped first foam having a mounting surface on which luggage is placed, and
It is provided with a shock absorber arranged below the first foam.
The buffer is made of a foamed resin having a lower hardness and a higher density than the first foam.
The hardness of the buffer before foaming is lower than the hardness of the first foam before foaming.
palette. The pallet according to claim 1, wherein the lower end of the first foam has a first recess in which the upper end of the buffer is embedded. The pallet according to claim 2, wherein the depth D1 of the first recess is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape. It further comprises a second foam that includes a plurality of legs that support the first foam and is disposed below the buffer.
The pallet according to claim 1, wherein the buffer has a hardness lower than that of the second foam and a high density. The pallet according to claim 4, wherein the upper end portion of the second foam has a second recess in which the lower end portion of the shock absorber is embedded. The pallet according to claim 5, wherein the depth D2 of the second recess is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape. It further comprises a second foam that includes a plurality of legs that support the first foam and is disposed below the buffer.
The buffer has a lower hardness and a higher density than the second foam.
The upper end portion of the second foam has a second recess in which the lower end portion of the shock absorber is embedded.
The second aspect of claim 2, wherein the sum D1 + D2 of the depth D1 of the first recess and the depth D2 of the second recess is larger than the thickness when the buffer is compressed to the maximum compressibility that can be restored to the original shape. palette. The pallet according to any one of claims 1 to 7, wherein the buffer has a compression set of 5% or less measured in accordance with the provisions of EN ISO 1856. The pallet according to any one of claims 1 to 8, wherein the buffer has a mechanical loss factor of 0.05 to 0.65 measured in accordance with DIN 53513. The pallet according to any one of claims 1 to 9, wherein the first foam is a polystyrene-polyethylene copolymer as a foam material. The pallet according to claim 1 or 2, wherein the buffer is made of a foamed resin different from the first foam and has a smaller expansion ratio than the first foam. The pallet according to any one of claims 4 to 7, wherein the second foam extends parallel to the above-mentioned placing surface and includes a connecting portion connecting the legs. The pallet according to claim 12, wherein the connecting portion has a ground contact surface in contact with the ground. 13. The pallet according to claim 13, wherein the connecting portion has a through hole penetrating the connecting portion in the thickness direction.

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