JP2004067188A - Intermediate pad for packing rolled article - Google Patents

Intermediate pad for packing rolled article Download PDF

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Publication number
JP2004067188A
JP2004067188A JP2002230429A JP2002230429A JP2004067188A JP 2004067188 A JP2004067188 A JP 2004067188A JP 2002230429 A JP2002230429 A JP 2002230429A JP 2002230429 A JP2002230429 A JP 2002230429A JP 2004067188 A JP2004067188 A JP 2004067188A
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Japan
Prior art keywords
intermediate pad
support
packing
flange
projection
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JP2002230429A
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Japanese (ja)
Inventor
Masakazu Yoshida
吉田政和
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Kanegafuchi Chemical Industry Co Ltd
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Kanegafuchi Chemical Industry Co Ltd
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Priority to JP2002230429A priority Critical patent/JP2004067188A/en
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  • Buffer Packaging (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a durable intermediate pad for packing a rolled article in which a cylindrical body and a supporting body are integrally formed with the same material. <P>SOLUTION: The supporting body and a projecting part are integrally molded by using a durable bead type polyolefin foamed body. In addition, taking distribution of a load into consideration, the root part of the supporting body and the projecting part where the load of a product of the rolled article is most applied is reinforced by another raw material to realize cost decrease. In addition, as a method for inserting a reinforcing material without sticking it, an undercut part is formed when it is molded by utilizing flexibility of the polyolefin foamed body and the reinforcing material is inserted and fixed therein. Stackability is solved by the shape of the projecting part and fouling problem is solved with an antistatic agent. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は巻糸体、フィルム、テープなどの巻物製品を整列して多段に積層梱包する、改良された巻物梱包用中間パッドに関する。
【0002】
【従来の技術】
巻物製品を整列して多段に積層梱包して輸送する方法としては、巻物製品を巻いた紙管、ボビンなどの端部を支持体の所定の位置にある穿孔部に上下から挿入して巻物製品自体を板状の支持体に接触させて積層荷重を受ける方法と、別の方法として板状支持体の所定の位置の上下に突起部を取り付け、この突起部に紙管、ボビンなどの端部を挿入し、その端部端面に掛かる積層荷重を支持体面で直接受けるか、または突起部と一体的に形成された鍔部で受け止めて巻物製品自体を板状の支持体に接触させない方法との2つがある。
【0003】
前者の方法における支持体の材質はダンボールが一般的であって、数枚のダンボールを糊貼りして、所定の位置数ヶ所を抜き型で穿孔したものを使用している。ダンボール製支持体の厚みは、紙管、ボビンなどの端部が上下から挿入されるので、端部の長さの2倍以上が必要であり厚くなっている。巻物製品自体が直接ダンボールの表面に接触し、輸送中に擦れて磨耗しゴミが付着することと、湿度が高い場所に曝されるとダンボールは剛性を失い易いことから、実開平5−86856や特開平5−305982に見られる様にこの穴開きダンボール板をポリエチレンフィルムなどでカバーして改良したものもある。この際、紙巻、ボビンなどの端部をダンボール板の穿孔部に上下から挿入できるようフィルムカバーには弛みが設けられている。
【0004】
本発明の対象となる後者の方法は、公開実用昭和58−71049、公開実用昭和58−156669に見られる様に、いずれも上下に突起部があり中央部に鍔部を持つプラスチック製の柱状体を接着、篏合あるいは一体的に作製し、これを柱状体径に相当する径の穿孔部を持つ支持体を上から挿入して鍔部で支持体を止めるか、または柱状体を支持体の穿孔部に挿し込んで鍔部で係止して、次ぎに柱状体の上下の突起部に紙管、ボビンなどの端部を篏合し、多段に積層する方法である。また、公告実用平成7−43098は同様の方法であるが支持体を挟み込み、ボルト止めして柱状体を形成する点が異なる。また、特開平9−183456は板状支持体が紙製であって突起物がパルプモールド製である積層梱包用中間パッドを提案している。
【0005】
【発明が解決しようとする課題】
前者の方法は本発明の対象ではないが、ダンボールを厚く貼りあわせ穿孔するのでコスト高であることと巻物製品が直接支持体に触れるので汚れや支持体の耐久性が課題となっている。後者の方法は突起部に紙管、ボビンなどの端部を篏合し鍔部でその端部端面を支持するので、荷重は上下に突起を持つ柱状体が重力方向に受けるので支持体は横揺れ防止性能を持てば良く、薄物ダンボール板などで済ますことができる良さがある。しかしながら、上下に突起のあるプラスチック製の柱状体を作製するには高価な射出成形用金型が必要であることと上下に突起を持つ柱状体は一般的に一体成形ができないので、後から2つの突起物を貼り合わせる、篏合する、ボルト止めするなどして一体化させる必要があり、コストおよび手間が掛かる問題がある。また、柱状体と支持体とが一体ではなく、分離使用の場合には巻物製品を梱包する時に手間が多くなることと取り外した後の部品としての整理が大変である。公告実用平成7−43098は柱状体と支持体とをボルトで一体化しているが、柱状体と支持体の耐久性が全く異なり、古くなったダンボールなどの支持体を交換することになるが簡単ではない。特開平9−183456の突起物がパルプモールド製である積層梱包用中間パッドは軽い巻物製品には適するかもしれないが、重量のある巻物製品では荷重に耐えないので一般的ではない。本発明はかかる事情に鑑み考案されたもので、柱状体と支持体とが同一材料で一体的に形成された耐久性のある巻物梱包用中間パッドを提供することにある。
【0006】
【課題を解決するための手段】
上記に課題として挙げた、柱状体と支持体とが同一材料で一体的に形成できる方法を検討した結果、耐久性が期待できるビーズ法ポリオレフィン系発泡体の型内成形品を適用することにより上記課題が大幅に改善されることを見出し本発明を完成するに至った。
【0007】
柱状体と支持体とが同一材料で一体的に形成できる方法としては、
プラスチックの射出成形品、発泡樹脂のビーズ法型内成形品、パルプモールド、シートの真空成形品の貼り合わせがある。プラスチックの射出成形品は耐久性があって理想的であるが、現実的でないのは金型が非常に高いことと、成形品が重くなるので作業性が悪い点にある。発泡樹脂のビーズ法型内成形品の代表は発泡スチロール製であるが、耐久性がなく仮に高密度品を採用してもワレ、欠けが発生し易い。パルプモールドはダンボール製と同じく吸湿して剛性を失う素材であり、突起部が脆いことと支持体が曲がりやすい欠点がある。また、シートの真空成形品の貼り合わせは後加工を伴うことと突起部も支持体も薄くて荷重に耐え難く重い巻物製品の梱包には適さないことが指摘された。
【0008】
上記の検討に鑑み、本発明は柱状体と支持体とが同一材料で一体的に形成できる方法として、耐久性の期待できるビーズ法ポリオレフィン系発泡体の適用を提案する。ビーズ法ポリオレフィン系発泡体には発泡ポリエチレン、発泡ポリプロピレン、ポリエチレン−ポリスチレン複合樹脂の発泡体、エチレン−酢ビ共重合体による発泡体などがあるが、中でも剛性と柔軟性を兼ね備えかつ耐久性のある発泡ポリプロピレンが好ましい。
【0009】
ビーズ法発泡ポリプロピレンは密度を変えることにより、巻物梱包用中間パッドとしてのコストと要求性能を満たすことが可能であり、重い巻物製品には密度の高いものを採用し、軽い巻物製品には密度の低いものを採用すると良い。超軽量から超重量の巻物製品に対応できるビーズ法発泡ポリプロピレンの密度の幅は20〜300g/Lが適当である。また、後述のごとく紙管、ボビンなどの端部端面の荷重を直接受ける部分を他材料で補強する方法を取れば比較的密度の低い発泡ポリプロピレンでも採用できコストダウンができる。
【0010】
ビーズ法型内発泡成形法は予め発泡した粒子を閉鎖した雌雄の金型内に原料として充填し、金型周囲のチャンバー室から金型表面にある無数のベントを通じ蒸気を投入することにより2次発泡させ、後に冷却して、金型形状に一致した形状の発泡成形体を得る方法である。この方法によれば、巻物梱包用中間パッドとしては上下に突起部のあるものと底板と天端板は片方のみ突起部のあるものが必要となるが、雌雄どちらかの金型内の突起部(金型から見ると凹陥部)を金型駒化して平板の金型駒と予め交換すれば容易に成形可能となる。
【0011】
支持体に上下の突起部が一体化された巻物梱包用中間パッドは未使用時には、片付けるに際し突起部が妨害となるが、金型設計に際し積み重ねた時突起部が相互に篏合する形状とすることによりコンパクトな収納が可能となる。
【0012】
また、一般にプラスチックや発泡樹脂は帯電し易い素材であり、巻物梱包用中間パッドにおいては輸送中の振動などで帯電する可能性が高く、この際塵芥などが付着して巻物製品を汚す恐れがある。この場合には、帯電防止能を有する添加剤を原料に練り込むあるいは添付することで解決できる。
【0013】
支持体と突起部で構成される巻物梱包用中間パッドは突起部が紙巻、ボビンなどの端部を支え、鍔部がその端部端面の荷重を直接受ける荷重配分となっているため、本発明によるポリオレフィン系発泡体製の巻物梱包用中間パッドをさらにコストダウンする方法を提案する。本発明はポリオレフィン系発泡体にて支持体と突起部を一体的に形成するが、支持体部分と突起部の荷重負担が突起部の付け根部より低いので、比較的低密度(概ね、90g〜20g/L)のビーズ法ポリオレフィン系発泡体を使用して素材費をコストダウンし、突起部の付け根部は紙管、ボビンなどの端部端面が直接当たり荷重を最も受ける部分であるので、剛性、耐久性のある素材で形成された板状あるいはシート状のフランジを別途挿入して補強する方法である。この際フランジは突起部あるいは支持体に接着などで固定することが望ましい。フランジが突起部から簡単に外れてしまうと未使用時のスタッキング時に分離して好ましくない。
【0014】
上述した接着剤による固定は煩雑であることと、フランジが損傷した場合フランジのみ交換したいが接着されているとできないなど問題点が指摘されるので、本発明ではさらに簡便な方法を提案する。ビーズ法ポリオレフィン系発泡体は同じ型内成形法を用いる発泡スチロールとは違い柔軟性に富むため、金型成形後の離型時に成形体の形状に多少のアンダーカット部があっても弾性変形して製品を傷つけることなく離型することが可能であろうと推定し、金型製作して実験を繰り返した結果、突起部の付け根部にアンダーカット部を設けたサンプルを試作することができた。このアンダーカット部を利用してフランジを突起部に強制的に押し込むことによりフランジを良好に支持体に挿着固定することができた。本方法は固定する位置をフランジの内周の先端部に限定する必要はなく、固定が充分であれば、フランジ外周の先端部でも良く、また一部であっても全部であっても良い。
【0015】
【発明の実施の形態】
以下、本発明によるビーズ法ポリオレフィン系発泡体により製造された巻物梱包用中間パッドの実施の形態について図面を参照しながら説明する。
図1〜2は本発明の巻物梱包用中間パッドの支持体と突起部を一体的に形成した1実施例における形状図で、図3は巻物製品を積載した状態図である。図1は平面図で図2は上、中、下3種の中間パッドの側面図である。符号1は符号3を兼ねるので実際には2種あればよい。
【0016】
図4は従来からの実施されている形態の1比較例における巻物製品の組み立て図である。柱状体と支持体とが一体となっていないことを示す。柱状体が高価であること、巻物製品の梱包時に手間が掛かるあるいは開包時の部品の整理が大変である課題を抱えている。
【0017】
図5は突起部どうしを重ね合わせたときにコンパクトになる形状の1代表例を示す平面図(背面図も同一)である。図6は重ね合わせた側面図である。重ね合わせたときにコンパクトになる形状はこの他に幾例もある。
【0018】
発泡樹脂もプラスチック製と同じく通いの包装資材として何回も使用すると帯電して塵埃などが付着し易く、巻物製品の汚染の原因になる。そこで、発泡ポリプロピレンに帯電防止剤の添加された原料により本発明の巻物梱包用中間パッドを作製しテストしたが、帯電防止剤のないものと比較して塵埃の付着し難さは顕著であった。
【0019】
図7は本発明の巻物梱包用中間パッドの支持体と突起部との付け根部を他素材により補強したことを示す図である。図8は巻物製品を梱包した部分図である。実施例ではビーズ法発泡ポリプロピレンの密度60g/Lで本発明の中間パッドを成形し、フランジとして無架橋押出し法発泡ポリプロピレンシート(三井化学製、パロニアPP、3倍品)を打ち抜き歯で打ち抜いたものを使用し、接着剤で支持体に貼り付けた。巻物製品を梱包して振動試験した結果、補強効果が充分に発揮された。
【0020】
図9はフランジを接着しないで支持体および突起部で固定する方法を検討した結果、考案した方法を示す突起部中央断面の側面図である。図9の符号12の支持体と突起部との付け根部のアンダーカット部は型内成形法により強制的に離型した結果によるもので、発泡ポリプロピレンが柔軟性を有するため損傷なく離型できたことを示す。本実施例ではフランジの内周の先端部の全体に匹敵する部分をアンダーカットしたが、外周の先端部でも、また全部でなく一部でも可能である。
【0021】
【発明の効果】
中間パッドの支持体と突起部を耐久性のある同一素材で一体化したことにより、梱包、開包の作業性が向上し、繰り返し使用の頻度が高められた。また、支持体と突起部の付け根部を他素材で補強することでコストダウンを可能とした。補強のためのフランジを接着剤を使用せずに挿着固定を可能とした。合わせて、帯電問題を解決し、スタック性を向上させた。
【図面の簡単な説明】
【図1】中間パッド平面図
【図2】中間パッド側面図
【図3】巻物製品を積載した状態図
【図4】従来からの巻物製品の組み立て図
【図5】突起部どうしを重ね合わせたときにコンパクトになる形状の平面図
【図6】突起部どうしを重ね合わせたときにコンパクトになる形状の側面図
【図7】中間パッドの支持体と突起部との付け根部を補強した図
【図8】補強した中間パッドで巻物製品を梱包した部分図である。
【図9】アンダーカット部でフランジを固定する突起部中央断面の側面図
【符号の説明】
1  最上端の中間パッド側面図
2  中間で使用する中間パッドの側面図
3  最下端の中間パッド側面図
4  中間パッド
5  紙管またはボビン
6  巻物製品
7  柱状体
8  上突起部
9  下突起部
10 支持体
11 フランジ
12 アンダーカット部
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved intermediate pad for packing scrolls, in which roll products such as a wound body, a film, a tape, etc. are aligned and stacked in multiple layers.
[0002]
[Prior art]
As a method of aligning the rolled product and transporting it in a multi-layered stack, the end of a paper tube or bobbin around which the rolled product is wound is inserted into the perforated portion at a predetermined position of the support from above and below to form the rolled product. A method of receiving a laminating load by contacting itself with a plate-shaped support, or, as another method, attaching protrusions above and below a predetermined position of the plate-like support, and attaching an end of a paper tube, a bobbin, or the like to the protrusion. With the method of not directly contacting the rolled product itself with the plate-like support by receiving the laminating load applied to the end surface of the support directly on the support surface, or by receiving the lamination load integrally with the protrusion and the flange formed integrally with the protrusion. There are two.
[0003]
In the former method, the material of the support is generally a cardboard, which is obtained by pasting several sheets of cardboard and punching out a predetermined number of locations at a predetermined position. Since the ends of the paper tube, bobbin, etc. are inserted from above and below, the thickness of the cardboard support is required to be at least twice the length of the ends, and is thick. The roll product itself comes into direct contact with the surface of the corrugated cardboard and is rubbed and abraded during transportation, causing dust to adhere to the corrugated cardboard, and the corrugated cardboard is likely to lose its rigidity when exposed to high humidity. As disclosed in JP-A-5-305982, there is an improvement in which this perforated cardboard plate is covered with a polyethylene film or the like. At this time, the film cover is provided with slack so that an end of a paper roll, a bobbin, or the like can be inserted into a perforated portion of the cardboard board from above and below.
[0004]
The latter method, which is the object of the present invention, is a plastic columnar body having protrusions at the top and bottom and a flange at the center as shown in Japanese Utility Model Application Laid-Open No. 58-71049 and Japanese Utility Model Application No. 58-156669. Adhesive, fitting or integrally forming, and inserting the support having a perforated part with a diameter corresponding to the diameter of the columnar body from above and stopping the supporter with the flange, or attaching the columnar body to the supporter This is a method of inserting into a perforated portion, locking with a flange portion, and then fitting ends of a paper tube, a bobbin and the like to upper and lower protrusions of a columnar body, and stacking in multiple stages. The published utility model Heisei 7-43098 is a similar method, but differs in that a support is sandwiched and bolted to form a columnar body. Japanese Patent Application Laid-Open No. 9-183456 proposes an intermediate pad for laminated packaging in which the plate-like support is made of paper and the projection is made of pulp mold.
[0005]
[Problems to be solved by the invention]
Although the former method is not an object of the present invention, it has a problem in that the cost is high because the corrugated cardboard is thickly perforated and the rolled product directly touches the support, and there is a problem of dirt and durability of the support. In the latter method, the end of a paper tube, bobbin, etc. is fitted to the protrusion and the end of the end is supported by the flange. What is necessary is just to have the anti-shake performance, and there is the advantage that it can be completed with a thin cardboard board. However, it is necessary to use an expensive injection molding die to produce a plastic pillar having projections at the top and bottom, and a pillar having projections at the top and bottom cannot be generally integrally molded. It is necessary to integrate the two projections by bonding, fitting, bolting, etc., and there is a problem that costs and labor are required. In addition, when the columnar body and the support are not integral with each other, in the case of separate use, it takes much time and effort to pack the rolled product, and it is difficult to arrange as a part after removal. In the public utility Heisei 7-43098, the column and the support are integrated by bolts, but the durability of the column and the support is completely different, and it is easy to replace old supports such as cardboard. is not. The intermediate pad for laminated packaging in which the projections of JP-A-9-183456 are made of pulp may be suitable for light rolled products, but are not common in heavy rolled products because they cannot withstand loads. The present invention has been devised in view of such circumstances, and it is an object of the present invention to provide a durable scroll packing intermediate pad in which a columnar body and a support are integrally formed of the same material.
[0006]
[Means for Solving the Problems]
As a result of examining a method in which the columnar body and the support body can be integrally formed of the same material, which has been cited as an issue above, by applying an in-mold molded article of a bead method polyolefin foam which can be expected to have durability, The inventors have found that the problem is greatly improved and completed the present invention.
[0007]
As a method in which the columnar body and the support can be integrally formed of the same material,
There are plastic injection molded products, foamed resin molded products in the bead method, pulp molds, and vacuum molded products of sheets. Although plastic injection molded articles are durable and ideal, they are unrealistic in that the mold is very high and that the molded articles are heavy and workability is poor. A typical example of a foamed resin molded article in a bead method is made of styrene foam. However, cracking and chipping are likely to occur even if a high-density product is used without durability. The pulp mold is a material that loses rigidity by absorbing moisture, similarly to the case made of cardboard, and has drawbacks that the projections are brittle and the support is easily bent. In addition, it was pointed out that the lamination of the vacuum-formed product of the sheet involves post-processing, and that the projections and the support are too thin to withstand the load and are not suitable for packing heavy rolled products.
[0008]
In view of the above study, the present invention proposes the use of a bead-based polyolefin-based foam, which can be expected to have durability, as a method for integrally forming a columnar body and a support with the same material. The bead method polyolefin foam includes foamed polyethylene, foamed polypropylene, foamed polyethylene-polystyrene composite resin, foamed ethylene-vinyl acetate copolymer, and the like. Among them, the foam has both rigidity and flexibility and is durable. Foamed polypropylene is preferred.
[0009]
By changing the density of the bead-method foamed polypropylene, it is possible to meet the cost and required performance as an intermediate pad for roll packaging, use high-density ones for heavy scrolls, and use high-density ones for light scrolls. It is good to adopt a low one. The appropriate width of the density of the foamed polypropylene expanded by the bead method, which can be used for a rolled product having a weight from ultralight to 20 g / L, is appropriate. Further, as described later, if a portion of a paper tube, a bobbin, or the like, which directly receives the load on the end surface of the end portion is reinforced with another material, a relatively low-density foamed polypropylene can be used, and the cost can be reduced.
[0010]
In the bead method in-mold foam molding method, secondary foaming is carried out by filling pre-expanded particles into closed male and female molds as raw materials and introducing steam from chamber chambers around the mold through countless vents on the mold surface. This is a method of foaming and then cooling to obtain a foam molded article having a shape corresponding to a mold shape. According to this method, the intermediate pad for scroll packing needs to have a projection on the top and bottom, and the bottom plate and the top end plate must have a projection on only one side. The mold can be easily formed by converting the (concave portion as viewed from the mold) into a mold piece and replacing it with a flat mold piece in advance.
[0011]
When the intermediate pad for scroll packing, in which the upper and lower protrusions are integrated with the support, is not used, the protrusions may hinder the clearing, but when stacked in the mold design, the protrusions are shaped to fit together. This enables compact storage.
[0012]
Generally, plastics and foamed resins are easily charged materials, and the intermediate pad for scroll packaging is likely to be charged due to vibration during transportation, etc. At this time, dust and the like may adhere and contaminate the scroll product. . In this case, the problem can be solved by kneading or attaching an additive having an antistatic function to the raw material.
[0013]
The intermediate pad for scroll packing composed of the support and the projections has a load distribution in which the projections support the ends of a paper roll, a bobbin, and the like, and the flanges receive the load of the end surfaces of the ends directly. Proposes a method for further reducing the cost of an intermediate pad for packaging a roll made of a polyolefin foam according to the above. In the present invention, the support and the projection are integrally formed of a polyolefin-based foam. However, since the load burden on the support and the projection is lower than that at the base of the projection, the density is relatively low (generally 90 g to 90 g). 20g / L) The bead method polyolefin foam is used to reduce the material cost, and the base of the protrusion is the portion where the end face of the paper tube, bobbin, etc. is directly hit and receives the most load. This is a method in which a plate-like or sheet-like flange made of a durable material is separately inserted and reinforced. At this time, the flange is desirably fixed to the projection or the support by bonding or the like. If the flange is easily detached from the projection, it is undesirably separated during stacking when not in use.
[0014]
Problems such as the fact that the fixing with the adhesive described above is troublesome and that the flange is damaged and the user wants to replace only the flange but cannot adhere if it is bonded are pointed out. Therefore, the present invention proposes a simpler method. Since the bead method polyolefin foam is rich in flexibility, unlike styrene foam using the same in-mold molding method, it can be elastically deformed even if there is some undercut part in the shape of the molded body at the time of mold release after mold molding. It was presumed that it would be possible to release the product without damaging the product, and as a result of repeating the experiment after manufacturing the mold, a sample having an undercut at the base of the protrusion could be prototyped. By using the undercut portion to forcibly push the flange into the protrusion, the flange was successfully inserted and fixed to the support. In the present method, the fixing position does not need to be limited to the front end portion on the inner periphery of the flange. If the fixation is sufficient, the front end portion on the outer periphery of the flange may be used, or a part or all may be used.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an intermediate pad for packing scrolls manufactured by a bead method polyolefin foam according to the present invention will be described with reference to the drawings.
FIGS. 1 and 2 are sectional views showing an embodiment in which a support and a projection of an intermediate pad for scroll packing according to the present invention are integrally formed, and FIG. 3 is a view showing a state where a scroll product is loaded. FIG. 1 is a plan view and FIG. 2 is a side view of three types of intermediate pads, upper, middle and lower. Reference numeral 1 also serves as reference numeral 3 so that only two types are actually required.
[0016]
FIG. 4 is an assembly diagram of a scroll product in a comparative example of a conventional embodiment. Indicates that the column and the support are not integrated. There are problems that the columnar body is expensive, that it takes time to pack the rolled product, or that it is difficult to arrange the parts at the time of unpacking.
[0017]
FIG. 5 is a plan view (a rear view is also the same) showing one typical example of a shape that becomes compact when the projections are overlapped. FIG. 6 is a side view that is superimposed. There are several other shapes that are compact when superimposed.
[0018]
When the foamed resin is used as a passable packaging material as many times as a plastic material, the foamed resin is easily charged and dust easily adheres to it, which causes contamination of the rolled product. Therefore, the intermediate pad for scroll packaging of the present invention was prepared and tested from a raw material obtained by adding an antistatic agent to foamed polypropylene, and the adhesion of dust was remarkable as compared with that without the antistatic agent. .
[0019]
FIG. 7 is a view showing that the base of the support and the projection of the intermediate pad for scroll packing according to the present invention is reinforced with another material. FIG. 8 is a partial view in which a scroll product is packed. In the examples, the intermediate pad of the present invention was molded at a density of 60 g / L of foamed polypropylene by the bead method, and a non-crosslinked extruded polypropylene foam sheet (manufactured by Mitsui Chemicals, Paronia PP, triple product) was punched out with punching teeth as a flange. And attached to the support with an adhesive. As a result of packing the rolled product and performing a vibration test, the reinforcing effect was sufficiently exhibited.
[0020]
FIG. 9 is a side view of a central section of the projection showing a method devised as a result of studying a method of fixing the flange with the support and the projection without bonding. The undercut at the base of the support and the protrusion indicated by reference numeral 12 in FIG. 9 is a result of forcible release by an in-mold molding method, and the release was possible without damage because the expanded polypropylene had flexibility. It indicates that. In the present embodiment, a portion equivalent to the entire inner peripheral end of the flange is undercut, but it is also possible to use an outer peripheral end, or not all but a part.
[0021]
【The invention's effect】
By integrating the support and the projection of the intermediate pad with the same durable material, the workability of packing and unpacking is improved, and the frequency of repeated use is increased. In addition, the cost can be reduced by reinforcing the support and the base of the projection with another material. The flange for reinforcement can be inserted and fixed without using an adhesive. In addition, the charging problem was solved, and the stacking property was improved.
[Brief description of the drawings]
FIG. 1 is a plan view of an intermediate pad. FIG. 2 is a side view of an intermediate pad. FIG. 3 is a view showing a state in which rolled products are loaded. FIG. 4 is an assembled view of a conventional rolled product. Plan view of a shape that sometimes becomes compact. [FIG. 6] Side view of a shape that becomes compact when projections are overlapped. [FIG. 7] Reinforcement of the base between the support of the intermediate pad and the projections. FIG. 8 is a partial view in which a scroll product is packed with a reinforced intermediate pad.
FIG. 9 is a side view of a central section of a protrusion for fixing a flange at an undercut portion.
1 Side view of the uppermost intermediate pad 2 Side view of the intermediate pad used in the middle 3 Side view of the lowermost intermediate pad 4 Intermediate pad 5 Paper tube or bobbin 6 Rolled product 7 Columnar body 8 Upper projection 9 Lower projection 10 Support Body 11 Flange 12 Undercut

Claims (6)

巻物製品を整列して多段に積層支持する板状の支持体と巻物のボビン端部を挿入して固定させる突起部とがビーズ法ポリオレフィン系発泡体で一体的に形成されていることを特徴とする巻物梱包用中間パッド。A plate-shaped support for aligning and supporting the rolled product in a multi-layered manner and a projection for inserting and fixing the end of the bobbin of the roll are integrally formed by a bead-based polyolefin foam. Intermediate pad for packing scrolls. ビーズ法ポリオレフィン系発泡体が発泡ポリプロピレンであって、その密度が20〜300g/Lであることを特徴とする請求項1に記載の巻物梱包用中間パッド。The intermediate pad for roll packaging according to claim 1, wherein the bead-processed polyolefin-based foam is foamed polypropylene and has a density of 20 to 300 g / L. 突起部が未使用時、積み重ねた時に相互に係合する形状となる請求項1に記載の巻物梱包用中間パッド。The intermediate pad for scroll packing according to claim 1, wherein the projections have a shape that engages with each other when unused and stacked. ビーズ法ポリオレフィン系発泡体に帯電防止処理した請求項1〜3のいずれか1項記載の巻物梱包用中間パッド。The intermediate pad for roll packaging according to any one of claims 1 to 3, wherein an antistatic treatment is applied to the polyolefin-based foam of the bead method. 突起部と板状の支持体との付け根部に剛性、耐久性のある素材で形成された板状あるいはシート状のフランジを挿入することを特徴とする請求項1〜4のいずれか1項記載の巻物梱包用中間パッド。5. A plate-shaped or sheet-shaped flange formed of a rigid and durable material is inserted into a base between the projection and the plate-shaped support. Intermediate pad for packing scrolls. 前記フランジの外周および内周の先端部の一部または全部を突起部および支持体に設けられたアンダーカット部に挿着して固定できるようにした請求項1〜5のいずれか1項記載の巻物梱包用中間パッド。6. The flange according to claim 1, wherein a part or the entirety of the outer peripheral and inner peripheral ends of the flange is inserted into and fixed to an undercut provided on the protrusion and the support. 7. Intermediate pad for packing scrolls.
JP2002230429A 2002-08-07 2002-08-07 Intermediate pad for packing rolled article Pending JP2004067188A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179386A (en) * 2007-01-24 2008-08-07 Kaneka Corp Shock-absorbing spacer for transportation
JP2011016553A (en) * 2009-07-09 2011-01-27 Murazumi Kk Protector for roll product
JP2014076811A (en) * 2012-10-09 2014-05-01 Asahi Kasei E-Materials Corp Packaging body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179386A (en) * 2007-01-24 2008-08-07 Kaneka Corp Shock-absorbing spacer for transportation
JP2011016553A (en) * 2009-07-09 2011-01-27 Murazumi Kk Protector for roll product
JP2014076811A (en) * 2012-10-09 2014-05-01 Asahi Kasei E-Materials Corp Packaging body

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