JPH0650343Y2 - Synthetic resin foam pallet - Google Patents
Synthetic resin foam palletInfo
- Publication number
- JPH0650343Y2 JPH0650343Y2 JP1987139865U JP13986587U JPH0650343Y2 JP H0650343 Y2 JPH0650343 Y2 JP H0650343Y2 JP 1987139865 U JP1987139865 U JP 1987139865U JP 13986587 U JP13986587 U JP 13986587U JP H0650343 Y2 JPH0650343 Y2 JP H0650343Y2
- Authority
- JP
- Japan
- Prior art keywords
- pallet
- synthetic resin
- insertion hole
- density
- upper plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Pallets (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、貨物をフォークリフト等で移送する際に載台
として使用する合成樹脂発泡体製パレットに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a synthetic resin foam pallet used as a platform for transferring cargo by a forklift or the like.
従来、パレットは木製のものや金属製のものが多く使用
されており、近年、合成樹脂射出成形体製のパレットや
合成樹脂押出発泡体製のパレットも使用されるようにな
った。Conventionally, many wooden and metal pallets have been used, and in recent years, pallets made of synthetic resin injection molded bodies and pallets made of synthetic resin extruded foam have come to be used.
また、実開昭58-143322号公報、特開昭58-171342号公報
及び特開昭58-171343号公報には、上板のパレット構成
部材と下板のパレット構成部材とを嵌合して得られるポ
リオレフィン系樹脂発泡粒子の型内発泡成形体製のパレ
ットが開示されている。In addition, in Japanese Utility Model Laid-Open No. 58-143322, Japanese Patent Laid-Open No. 58-171342, and Japanese Patent Laid-Open No. 58-171343, a pallet component member of an upper plate and a pallet component member of a lower plate are fitted together. A pallet made of an in-mold foam molded article of the obtained polyolefin resin foamed particles is disclosed.
一般にパレットには充分な強度が要求され、このことか
ら、木製のパレットや金属製のパレットは太い枠材や厚
い板材が使用されており、パレット自体かなり重く、こ
のため木製のパレットや金属製のパレットは作業性が悪
く、安全性にも欠ける欠点があった。また木製パレット
はささくれや割れが発生し、貨物の損傷や作業者の怪我
等の原因になった。更に、木製のパレットには吸水性が
あるためカビやバクテリア等の細菌が発生しやすく、こ
のことは食品業界や薬品業界ではとくに問題となってい
た。Generally, pallets are required to have sufficient strength. Therefore, wooden pallets and metal pallets use thick frame materials and thick plate materials, and the pallets themselves are quite heavy. Pallets had the drawback of poor workability and lack of safety. In addition, the wooden pallet was cracked and cracked, causing damage to the cargo and injury to workers. Further, since the wooden pallet has water absorption property, bacteria such as mold and bacteria are easily generated, which is a particular problem in the food industry and the pharmaceutical industry.
合成樹脂射出成型体製のパレットは、無発泡のものが多
く、硬く、緩衝性に劣るため、ちょっとした衝撃で貨物
を傷つけてしまう欠点がある。合成樹脂押出発泡体製の
パレットは押出品特有の方向性のある“ストレス”があ
り、このことからパレットに反りが生じる欠点がある。Many synthetic resin injection molded pallets are non-foamed, hard, and inferior in cushioning property, so they have the drawback of damaging the cargo with a small impact. The pallet made of synthetic resin extruded foam has a directional "stress" peculiar to the extruded product, which causes the pallet to warp.
また、実開昭58-143322号公報、特開昭58-171342号公報
及び特開昭58-171343号公報に開示されたパレットは、
各構成部材を融着した際に端部の融着不良を引き起こし
易く、繰り返して使用している間に特にフォーク挿入孔
付近の融着部分から構成部材どうしが剥離してしまう問
題があった。また、各パレット構成部材を構成する発泡
体の密度が同一のものであるため、例えばフォーク挿入
孔付近の強度を高めるため発泡倍率を低下させて強度を
高めようとした場合、パレット全体が高密度の発泡体に
より構成されることとなり、その結果、パレット全体の
重量が重くなり、しかもコスト高にもなり経済的でな
い。Further, the pallets disclosed in Japanese Utility Model Laid-Open No. 58-143322, Japanese Patent Laid-Open No. 58-171342 and Japanese Patent Laid-Open No. 58-171343,
When the respective constituent members are fused, there is a problem that the defective fusion of the end portions is likely to occur, and the constituent members are separated from the fused portion particularly near the fork insertion hole during repeated use. In addition, since the foams that make up each pallet component have the same density, if the foaming ratio is reduced to increase the strength in the vicinity of the fork insertion hole, for example, the entire pallet will have a high density. Therefore, the weight of the entire pallet is heavy, and the cost is high, which is not economical.
本考案は上記の課題に鑑みなされたもので、パレット構
成部材である上板及び下板が剥離してしまうという虞れ
がなく、パレット全体としての充分な強度を有し、しか
も軽量で緩衝力に優れた合成樹脂発泡体製パレットを提
供することを目的とする。The present invention has been made in view of the above problems, and there is no fear that the upper plate and the lower plate, which are pallet constituting members, will be peeled off, and the pallet has sufficient strength, and is lightweight and has a cushioning force. It is an object of the present invention to provide a pallet made of a synthetic resin foam excellent in heat resistance.
即ち、本考案は合成樹脂の発泡ビーズ成型体よりなる上
板及び下板を接合してなり且つ側面にフォーク挿入孔を
有するパレット本体部と、該本体部を構成する上記上板
及び下板の発泡ビーズ成型体の密度より高密度であって
上記合成樹脂と同一樹脂の発泡ビーズ成型体よりなり且
つ前記本体部の少なくともフォーク挿入孔が設けられて
いる側面に接合一体化されたパレット縁部からなること
を特徴とする合成樹脂発泡体製パレットを要旨とする。That is, the present invention relates to a pallet main body which is formed by joining an upper plate and a lower plate made of foamed beads of synthetic resin and has a fork insertion hole on a side surface, and the upper plate and the lower plate which constitute the main body. From a pallet edge portion which is made of a foamed bead molded body having a density higher than that of the foamed bead molded body and made of the same resin as the synthetic resin, and which is joined and integrated to at least a side surface of the main body portion where the fork insertion hole is provided. The gist is a synthetic resin foam pallet.
以下、本考案の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本考案パレットの一実施例を示すもので、本考
案パレットは上板１及び下板２を接合一体化した積層構
造からなるパレット本体部３と、該本体部３の所定の側
面に設けられるパレット縁部４から構成され、また側面
にはフォークリフトのフォークを差し込むためのフォー
ク挿入孔５が設けられている。上板１及び下板２は各々
１枚構成のものであっても或いは各々複数枚の構成のも
のであってもよい。FIG. 1 shows an embodiment of the pallet of the present invention. The pallet of the present invention has a pallet body 3 having a laminated structure in which an upper plate 1 and a lower plate 2 are joined and integrated, and a predetermined side surface of the body 3. And a fork insertion hole 5 for inserting a fork of a forklift. Each of the upper plate 1 and the lower plate 2 may have a one-piece structure or a plurality of pieces.
フォーク挿入孔５は一側面から相対峙する側面側に貫通
したもので、一側面に設けられる挿入孔５の数はフォー
クリフトの有するフォークの数に応じて適宜設定され、
また第３図及び第４図に示されるように一側面と隣接す
る側面側にも設け、パレットのいずれの側面からでもフ
ォークの差込みを行えるように設けることもできる。The fork insertion hole 5 penetrates from one side surface to the side surface facing the other side, and the number of the insertion holes 5 provided on one side surface is appropriately set according to the number of forks of the forklift.
Further, as shown in FIGS. 3 and 4, it may be provided on the side surface side adjacent to one side surface so that the fork can be inserted from any side surface of the pallet.
パレット縁部４はパレット本体部３の上板１及び下板２
と同一の合成樹脂からなる発泡ビーズ成型体からなり、
パレット本体部３の少なくともフォーク挿入孔５が設け
られている側面に接合一体化して設けられ、第２図に示
すようにフォーク挿入孔５が相対峙する２側面に設けら
れている場合、その２側面にだけ設けても或いはそれに
加えて挿入孔５が設けられていない側面にも同時に設け
てもよい。また、パレット縁部４は第４図に示すように
挿入孔５がパレット本体部３の全側面に設けられている
場合、それらの側面全部に設けることが好ましい。パレ
ット縁部４の接合方法としては、縁部４がパレット本体
部３と同一の合成樹脂の発泡ビーズ成型体からなるため
熱融着によりそのまま接合しても、或いは縁部４と本体
部３との接合面に所定の凸部、凹部を設けて、それらを
嵌合することにより接合してもよい。The pallet edges 4 are the upper plate 1 and the lower plate 2 of the pallet body 3.
Made of foamed bead molding made of the same synthetic resin as
If the fork insertion hole 5 is provided integrally on at least the side surface of the pallet body 3 on which the fork insertion hole 5 is provided, and the fork insertion hole 5 is provided on two side surfaces facing each other as shown in FIG. It may be provided only on the side surface, or in addition to it, it may be provided simultaneously on the side surface where the insertion hole 5 is not provided. Further, when the insertion hole 5 is provided on all side surfaces of the pallet body portion 3 as shown in FIG. 4, the pallet edge portion 4 is preferably provided on all of those side surfaces. As a method of joining the pallet edge portion 4, since the edge portion 4 is made of a foamed bead molding of the same synthetic resin as the pallet body portion 3, the pallet edge portion 4 may be directly joined by heat fusion, or the edge portion 4 and the body portion 3 may be joined together. It is also possible to provide a predetermined convex portion and a concave portion on the joint surface and to fit them to join them.
本考案パレットは上述の如くパレット縁部４がパレット
本体部３の少なくともフォーク挿入孔５が設けられてい
る側面に接合一体化して設けられるため、パレット本体
部３の上板１及び下板２が端部において強固に接合固定
される。In the pallet of the present invention, as described above, the pallet edge portion 4 is integrally provided on the side surface of the pallet body portion 3 where at least the fork insertion hole 5 is provided. It is firmly joined and fixed at the ends.
パレット本体部３における上板１及び下板２とパレット
縁部４は、同一の合成樹脂からなる予備発泡粒子を用
い、それを型内発泡させて得られる発泡ビーズ成型体か
ら構成される。上記合成樹脂としては、ポリエチレン
（低密度ポリエチレン、直鎖低密度ポリエチレン及び高
密度ポリエチレン）、ポリプロピレン、エチレン−プロ
ピレンランダム共重合体、エチレン−プロピレンブロッ
ク共重合体等が挙げられる。上記合成樹脂からなる予備
発泡粒子は架橋されたものでも或いは無架橋のものでも
よい。上記合成樹脂のうち特に、エチレン成分が２〜５
重量％であるエチレン−プロピレンランダム共重合体が
強靱性、耐熱性、柔軟性等の点で優れているため好まし
い。また上記発泡ビーズ成型体にカーボンブラック等の
耐候性材料や酸化防止剤、紫外線吸収剤等を混入するこ
とができ、この場合、耐候性に優れたパレットを得るこ
とができる。The upper plate 1 and the lower plate 2 and the pallet edge portion 4 in the pallet body 3 are made of expanded bead moldings obtained by using pre-expanded particles made of the same synthetic resin and in-molding them. Examples of the synthetic resin include polyethylene (low density polyethylene, linear low density polyethylene and high density polyethylene), polypropylene, an ethylene-propylene random copolymer, an ethylene-propylene block copolymer and the like. The pre-expanded particles made of the synthetic resin may be crosslinked or non-crosslinked. Among the above synthetic resins, especially the ethylene component is 2 to 5
The ethylene-propylene random copolymer, which is contained by weight, is preferable because it is excellent in toughness, heat resistance, flexibility and the like. Further, a weather resistant material such as carbon black, an antioxidant, an ultraviolet absorber or the like can be mixed in the foamed bead molding, and in this case, a pallet excellent in weather resistance can be obtained.
本考案においてパレット本体部及びパレット縁部を構成
する発泡ビーズ成型体の密度は、パレットの重量や強度
等を考慮して適宜設定されるが、通常、0.09〜0.3g/cm3
のものが好ましく、この密度が0.09g/cm3未満では圧縮
強度が弱く緩衝性に劣り、逆に密度が0.3g/cm3を越える
場合は重量が重くなる。また本考案パレットは、パレッ
ト縁部の発泡ビーズ成型体の密度がパレット本体部の発
泡ビーズ成型体の密度より高密度に形成されている。従
って、パレット縁部の発泡ビーズ成型体の密度としては
0.15〜0.3g/cm3が望ましく、縁部における成型体密度と
本体部における成型体密度との密度比は1:3.3が好まし
い。このように構成することにより、パレット縁部は強
度に優れたものとなり、フォーク等による衝撃等に対す
る耐久性が良好なものとなる。In the present invention, the density of the foamed bead moldings constituting the pallet body and the pallet edges is appropriately set in consideration of the weight and strength of the pallet, but normally 0.09 to 0.3 g / cm 3
When the density is less than 0.09 g / cm 3 , the compressive strength is weak and the buffering property is poor, and when the density exceeds 0.3 g / cm 3 , the weight is heavy. In the pallet of the present invention, the density of the foam bead moldings at the pallet edge is higher than that of the foam bead moldings at the pallet body. Therefore, as the density of the foamed bead molding at the edge of the pallet,
0.15 to 0.3 g / cm 3 is desirable, and the density ratio of the molded body density in the edge portion to the molded body density in the main body portion is preferably 1: 3.3. With such a configuration, the edge portion of the pallet becomes excellent in strength, and the durability against impact by a fork or the like becomes good.
上記の如き構成からなる本考案のパレットを製造するに
当たっては例えば、パレット本体部における上板と下板
及びパレット縁部を予め別々にビーズ成型法により形成
した後、上板と下板を熱融着により接合一体化してパレ
ット本体部を形成し、しかる後、該本体部の所定側面に
パレット縁部を熱融着等により接合一体化させて製造す
ることができる。In manufacturing the pallet of the present invention having the above-described structure, for example, the upper plate and the lower plate in the pallet body and the pallet edge are separately formed in advance by the bead molding method, and then the upper plate and the lower plate are heat-melted. The pallet body can be integrally formed by welding to form a pallet body, and then the pallet edge can be joined and integrated by heat fusion or the like on a predetermined side surface of the body.
以上説明したように、本考案の合成樹脂発泡体製パレッ
トは充分な強度を有し、軽量で緩衝力に優れたものであ
る。また、パレット縁部をパレット本体部の側面に接合
一体化した構造からなるため上板及び下板が強固に固定
され、その結果、両者が容易に剥離することがなく、こ
れはパレット縁部を高強度のものとした本考案の構成に
よって、顕著に現れる効果である。更に、パレット縁部
の発泡ビーズ成型体の密度をパレット本体部の発泡ビー
ズ成型体の密度に対して自由に調節できるため、パレッ
ト全体としての重量を大きく増すことなく、フォーク挿
入孔付近のみ密度を高くしてその強度を特に高めたパレ
ットを容易に得ることができるとともにコスト的にも安
価である利点を有する。As described above, the synthetic resin foam pallet of the present invention has sufficient strength, is lightweight, and has excellent cushioning force. Also, since the pallet edge part is joined and integrated to the side surface of the pallet body part, the upper plate and the lower plate are firmly fixed, and as a result, they are not easily peeled off. This is a remarkable effect due to the structure of the present invention having high strength. Furthermore, since the density of the foam bead moldings on the edge of the pallet can be freely adjusted with respect to the density of the foam bead moldings on the pallet body, the density of only the vicinity of the fork insertion hole can be adjusted without significantly increasing the weight of the pallet as a whole. It has the advantage that it is possible to easily obtain a pallet having a particularly high strength, and the cost is low.
また、本考案パレットは発泡ビーズ成型体からなるため
特定の方向に“ストレス”がなく、反りの生じる虞れも
なく、歪による変形も生じないとともに木製のパレット
のようにささくれや割れが生じる虞れがないため作業性
が良好で安全性にも優れ、しかも吸水性が極めて小さい
ことからカビやバクテリア等の細菌が発生する虞れもな
く、衛生的である。Further, since the pallet of the present invention is made of foamed bead molding, there is no "stress" in a specific direction, there is no risk of warpage, deformation due to distortion does not occur, and there is a risk of cracking or cracking like a wooden pallet. Since it does not have this, the workability is good and the safety is also excellent. Moreover, since the water absorption is extremely small, there is no fear that bacteria such as mold and bacteria will occur, and it is hygienic.
第１図は本考案パレットの一実施例を示す斜視図、第２
図は第１図に示されるパレットを分離させた状態を示す
斜視図、第３図は本考案パレットの他の実施例を示す斜
視図、第４図は第３図に示されるパレットを分離させた
状態を示す斜視図である。 １……上板、２……下板 ３……パレット本体部、４……パレット縁部 ５……フォーク挿入孔FIG. 1 is a perspective view showing an embodiment of the pallet of the present invention, and FIG.
1 is a perspective view showing the pallet shown in FIG. 1 in a separated state, FIG. 3 is a perspective view showing another embodiment of the pallet of the present invention, and FIG. 4 is a view showing the pallet shown in FIG. It is a perspective view which shows the opened state. 1 ... Upper plate, 2 ... Lower plate 3 ... Pallet body, 4 ... Pallet edge 5 ... Fork insertion hole
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−171343（ＪＰ，Ａ) 実開 昭50−90362（ＪＰ，Ｕ) 実公 昭53−26762（ＪＰ，Ｙ１) 実公 昭53−22901（ＪＰ，Ｙ１) 実公 昭51−4450（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-171343 (JP, A) Actual development S 50-90362 (JP, U) Actual public S53-26762 (JP, Y1) Actual public S53- 22901 (JP, Y1) Actual public Sho 51-4450 (JP, Y1)
Claims (2)
及び下板を接合してなり且つ側面にフォーク挿入孔を有
するパレット本体部と、該本体部を構成する上記上板及
び下板の発泡ビーズ成型体の密度より高密度であって上
記合成樹脂と同一樹脂の発泡ビーズ成型体よりなり且つ
前記本体部の少なくともフォーク挿入孔が設けられてい
る側面に接合一体化されたパレット縁部からなることを
特徴とする合成樹脂発泡体製パレット。Claims: 1. A pallet main body formed by joining an upper plate and a lower plate made of foamed beads of synthetic resin and having a fork insertion hole on a side surface, and the upper plate and the lower plate forming the main body. From a pallet edge portion which is made of a foamed bead molded body having a density higher than that of the foamed bead molded body and made of the same resin as the synthetic resin, and which is joined and integrated to at least a side surface of the main body portion where the fork insertion hole is provided. Pallet made of synthetic resin foam characterized in that.
発泡ビーズ成型体が、エチレン成分が２〜５重量％のエ
チレン−プロピレンランダム共重合体からなり、密度が
0.09〜0.3g/cm3の発泡ビーズ成型体である実用新案登録
請求の範囲第１項記載の合成樹脂発泡体製パレット。2. A foamed bead molding forming a pallet body and a pallet edge is made of an ethylene-propylene random copolymer having an ethylene component of 2 to 5% by weight, and has a density of
The pallet made of synthetic resin foam according to claim 1, which is a molded product of foam beads of 0.09 to 0.3 g / cm 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987139865U JPH0650343Y2 (en) | 1987-09-12 | 1987-09-12 | Synthetic resin foam pallet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987139865U JPH0650343Y2 (en) | 1987-09-12 | 1987-09-12 | Synthetic resin foam pallet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6447626U JPS6447626U (en) | 1989-03-23 |
| JPH0650343Y2 true JPH0650343Y2 (en) | 1994-12-21 |
Family
ID=31403519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987139865U Expired - Lifetime JPH0650343Y2 (en) | 1987-09-12 | 1987-09-12 | Synthetic resin foam pallet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650343Y2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5090362U (en) * | 1973-12-20 | 1975-07-30 | ||
| JPS514450U (en) * | 1974-06-25 | 1976-01-13 | ||
| JPS5827205Y2 (en) * | 1976-08-04 | 1983-06-13 | 日立造船株式会社 | Steam boiler with thermal efficiency improvement device |
| JPS5649020Y2 (en) * | 1976-08-13 | 1981-11-16 | ||
| JPS58171343A (en) * | 1982-03-24 | 1983-10-08 | 旭化成株式会社 | Polyolefin group foamed body pallet |
-
1987
- 1987-09-12 JP JP1987139865U patent/JPH0650343Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6447626U (en) | 1989-03-23 |
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