JP2020069706A - Synthetic resin hollow plate processing method and synthetic resin hollow plate processed product - Google Patents

Synthetic resin hollow plate processing method and synthetic resin hollow plate processed product Download PDF

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JP2020069706A
JP2020069706A JP2018204650A JP2018204650A JP2020069706A JP 2020069706 A JP2020069706 A JP 2020069706A JP 2018204650 A JP2018204650 A JP 2018204650A JP 2018204650 A JP2018204650 A JP 2018204650A JP 2020069706 A JP2020069706 A JP 2020069706A
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hollow plate
synthetic resin
hollow
cutting tool
resin hollow
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一郎 市川
Ichiro Ichikawa
一郎 市川
久 浜本
Hisashi Hamamoto
久 浜本
知輝 舟久保
Tomoki Funakubo
知輝 舟久保
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Kawakami Sangyo KK
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Kawakami Sangyo KK
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Abstract

To make it possible to cut a synthetic resin hollow plate having a hollow internal structure, and at the same time, to seal its edge.SOLUTION: A synthetic resin hollow plate processing method includes: pressing a cutting tool 101 heated to a temperature equal to or higher than a Vicat softening temperature of a material resin and lower than a melting temperature to a hollow plate 1 made of a synthetic resin having a hollow internal structure; and press-cutting the hollow plate 1 while deforming the hollow plate 1 so that the cutting tool 101 is pushed into a softened portion.SELECTED DRAWING: Figure 2

Description

本発明は、中空状の内部構造を有する合成樹脂製中空板の加工方法、及び中空状の内部構造を有する合成樹脂製中空板を加工してなる合成樹脂製中空板加工品に関する。   The present invention relates to a method for processing a synthetic resin hollow plate having a hollow internal structure, and a synthetic resin hollow plate processed product obtained by processing a synthetic resin hollow plate having a hollow internal structure.

従来、中空状の内部構造を有する各種の合成樹脂製中空板が知られている。これらの合成樹脂製中空板は、軽量でありながらも高い剛性を備えることから、保管又は輸送用の包装箱のほか、建築材料や自動車の内装材など、種々の用途に供されている。   Conventionally, various synthetic resin hollow plates having a hollow internal structure have been known. Since these synthetic resin hollow plates are lightweight and have high rigidity, they are used for various purposes such as packaging boxes for storage or transportation, as well as building materials and interior materials for automobiles.

ところで、この種の合成樹脂製中空板にあっては、中空状の内部構造を有するが故に、外部に開放された端縁から、水やほこりなどの異物が内部に侵入してしまう虞がある。このため、異物の侵入を嫌う用途にあっては、合成樹脂製中空板の端縁を封止して異物の侵入を防止することが望まれている（例えば、特許文献１参照）。   By the way, in this kind of synthetic resin hollow plate, since it has a hollow internal structure, foreign matters such as water and dust may enter the inside from the edge opened to the outside. .. Therefore, in applications where entry of foreign matter is disliked, it is desired to prevent the entry of foreign matter by sealing the edge of the synthetic resin hollow plate (see, for example, Patent Document 1).

特開２０１１−０３７０６０号公報JP, 2011-037060, A

しかしながら、合成樹脂製中空板の端縁を封止する技術が、従前より種々提案されているが、いずれも煩雑な工程を必要とするものであった。   However, various techniques for sealing the edge of the synthetic resin hollow plate have been proposed in the past, but all of them required complicated steps.

そこで、本発明者は、この種の合成樹脂製中空板は、用途に応じて所定の形状に切断されて利用されていることに鑑みて、作業工程を簡略化するために、合成樹脂製中空板を切断するのと同時に、その端縁を封止することができる技術を提供すべ鋭意検討を重ねた結果、本発明を完成するに至った。   Therefore, in view of the fact that this type of synthetic resin hollow plate is used by being cut into a predetermined shape according to the application, in order to simplify the working process, the synthetic resin hollow plate is used. The present invention has been completed as a result of intensive studies to provide a technique capable of sealing the edges of the plate at the same time as cutting the plate.

本発明に係る合成樹脂製中空板の加工方法は、中空状の内部構造を有する合成樹脂製中空板の加工方法であって、材料樹脂のビカット軟化温度以上、融解温度未満の温度に加熱された切断具を当該中空板に押し当てて、軟化した部位に前記切断具が押し込まれていくように当該中空板を変形させながら、当該中空板を押し切る方法としてある。   The method for processing a synthetic resin hollow plate according to the present invention is a method for processing a synthetic resin hollow plate having a hollow internal structure, which is heated to a temperature not lower than the Vicat softening temperature of the material resin and lower than the melting temperature. There is a method in which the cutting tool is pressed against the hollow plate and the hollow plate is pushed down while the hollow plate is deformed so that the cutting tool is pushed into the softened portion.

また、本発明に係る合成樹脂製中空板加工品は、中空状の内部構造を有する合成樹脂製中空板を加工してなる加工品であって、当該中空板の一方の表面側が押し延ばされて、端縁が封止された端縁封止部を有する構成としてある。   Further, the synthetic resin hollow plate processed product according to the present invention is a processed product obtained by processing a synthetic resin hollow plate having a hollow internal structure, and one surface side of the hollow plate is pushed and stretched. Thus, it is configured to have an edge sealing portion whose edges are sealed.

本発明によれば、合成樹脂製中空板を切断するのと同時に、その端縁を封止することができ、合成樹脂製中空板の一方の表面側が押し延ばされて、端縁が封止された端縁封止部を有する種々の加工品を提供することができる。   According to the present invention, the edge of the synthetic resin hollow plate can be sealed at the same time when the synthetic resin hollow plate is cut, and the one surface side of the synthetic resin hollow plate is pushed out to seal the edge. It is possible to provide various processed products having the edge sealing portion.

本発明に係る合成樹脂製中空板の加工方法を、プレス式裁断装置を用いて実施する例を示す説明図である。It is explanatory drawing which shows the example which implements the processing method of the synthetic resin hollow board which concerns on this invention using a press type cutting device. 本発明に係る合成樹脂製中空板の加工方法について、その実施形態の概略を示す説明図である。It is explanatory drawing which shows the outline of the embodiment about the processing method of the synthetic resin hollow board which concerns on this invention. 中空状の内部構造を有する合成樹脂製中空板の一例を示す説明図である。It is explanatory drawing which shows an example of the synthetic resin hollow plate which has a hollow internal structure.

以下、本発明の好ましい実施形態について、図面を参照しつつ説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

本実施形態に係る合成樹脂製中空板の加工方法は、例えば、公知のプレス式裁断装置１００を用いて実施することができ、図１は、加熱手段１０２とともに切断具１０１として配設された抜刃型上に、中空板１を載置して、上方からプレスすることによって中空板１を型抜き加工する例を示している。   The method for processing a synthetic resin hollow plate according to the present embodiment can be carried out by using, for example, a known press-type cutting device 100, and FIG. 1 shows a cutting tool 101 provided with a heating means 102. An example is shown in which the hollow plate 1 is placed on a blade mold and pressed from above to perform the die cutting process.

本実施形態において、加工対象とされる中空板１としては、例えば、図３に示すように、中空状に膨出する多数の突起１０が形成されたキャップシート１１と、突起１０の開口側に積層されたバックシート１２と、突起１０の頂面側に積層されたライナーシート１３とからなるプラスチック気泡ボードを例示することができるが、これに限定されない。中空状に膨出する突起１０の形状は、図示するような円柱状に限らず、円錐台状、角錐台状などとしてもよい。
また、特に図示しないが、ハニカム状に組まれたコア材の表裏両面に、平板状の外装材を積層してなるプラスチックハニカムボードなど、中空状の内部構造を有する種々の中空板を加工対象とすることができる。 In the present embodiment, as the hollow plate 1 to be processed, for example, as shown in FIG. 3, a cap sheet 11 on which a large number of protrusions 10 that bulge into a hollow shape are formed and an opening side of the protrusions 10 are provided. A plastic foam board including a laminated back sheet 12 and a liner sheet 13 laminated on the top surface side of the protrusion 10 can be exemplified, but the invention is not limited thereto. The shape of the protrusion 10 that bulges into the hollow shape is not limited to the cylindrical shape as illustrated, but may be a truncated cone shape, a truncated pyramid shape, or the like.
Further, although not particularly shown, various hollow plates having a hollow internal structure, such as a plastic honeycomb board formed by laminating flat outer packaging materials on both front and back surfaces of a core material assembled in a honeycomb shape, are to be processed. can do.

中空板４を形成する材料樹脂としては、例えば、ポリプロピレン、ポリエチレン等のポリオレフィン系樹脂、ポリスチレン等のポリスチレン系樹脂、ポリエチレンテレフタレート等のポリエステル系樹脂、ナイロン等のポリアミド系樹脂などの熱可塑性樹脂が用いられる。   As the material resin forming the hollow plate 4, for example, a polyolefin resin such as polypropylene or polyethylene, a polystyrene resin such as polystyrene, a polyester resin such as polyethylene terephthalate, or a thermoplastic resin such as a polyamide resin such as nylon is used. Be done.

本実施形態にあっては、材料樹脂のビカット軟化温度以上、融解温度（融点）未満の温度に加熱された切断具１０１を中空板１に押し当てて、切断具１０１が押し当てられた部位を軟化させる（図２（ａ）参照）。
ここで、「ビカット軟化温度」は、ＪＩＳ Ｋ ７２０６：２０１６のＡ５０法に準拠して求めた値をいうものとし、「融解温度」は、ＪＩＳ Ｋ ７１２１：１９８７に準拠して求めた値をいうものとする。 In the present embodiment, the cutting tool 101 heated to a temperature not lower than the Vicat softening temperature of the material resin and lower than the melting temperature (melting point) is pressed against the hollow plate 1, and the part where the cutting tool 101 is pressed is pressed. It is softened (see FIG. 2 (a)).
Here, the "Vicat softening temperature" means a value obtained according to the A50 method of JIS K 7206: 2016, and the "melting temperature" means a value obtained according to JIS K 7121: 1987. I shall.

また、切断具１０１を中空板１に押し当てるにあたり、その押圧力は、図２（ａ）〜（ｃ）に示すように、切断具１０１が押し当てられた部位が軟化するにつれて、当該部位を変形させつつ、切断具１０１が中空板１の厚み方向に押し込まれていくように調整する。具体的には、切断具１０１の刃先の単位長さ当たりの押圧力（線圧）が、好ましくは５０〜３００ｋｇ／ｃｍ、より好ましくは５０〜２００ｋｇ／ｃｍ、さらに好ましくは７０〜１５０ｋｇ／ｃｍとなるように調整する。   Further, when the cutting tool 101 is pressed against the hollow plate 1, the pressing force is applied to the hollow plate 1 as the cutting tool 101 softens as shown in FIGS. 2 (a) to (c). While deforming, the cutting tool 101 is adjusted so as to be pushed in the thickness direction of the hollow plate 1. Specifically, the pressing force (linear pressure) per unit length of the cutting edge of the cutting tool 101 is preferably 50 to 300 kg / cm, more preferably 50 to 200 kg / cm, and further preferably 70 to 150 kg / cm. Adjust so that

このような押圧力により、比較的緩やかな速度で、切断具１０１が中空板１の厚み方向に押し込まれていくようにすることで、切断具１０１が押し当てられて軟化した部位が、切断具１０１によって押し延ばされながら、途中で破断したりすることなく、切断具１０１が押し当てられた面とは反対側の面に向かって徐々に変形していくようにすることができる。   By such a pressing force, the cutting tool 101 is pushed in the thickness direction of the hollow plate 1 at a relatively moderate speed, so that the portion where the cutting tool 101 is pressed and softened is a cutting tool. It is possible to cause the cutting tool 101 to gradually deform toward the surface opposite to the surface on which the cutting tool 101 is pressed, without being broken in the middle while being pushed by 101.

そして、このようにして中空板１を変形させて、その中空状の内部構造を塞ぎながら中空板１を押し切ることによって、中空板１を切断するのと同時に、切断具１０１によって押し延ばされて変形した部位によって、切断された端縁を封止することができる（図２（ｄ）参照）。   Then, by deforming the hollow plate 1 in this way, and pressing the hollow plate 1 while closing the hollow internal structure, the hollow plate 1 is cut, and at the same time, it is expanded by the cutting tool 101. The cut edge can be sealed by the deformed portion (see FIG. 2D).

また、本実施形態にあっては、材料樹脂のビカット軟化温度以上、融解温度未満の温度で中空板１を軟化させて加工するため、融解した材料樹脂が流動して、その痕跡が封止された端縁に現れるなどして、仕上がりを損ねてしまったりすることもなく、封止された端縁の仕上がりを良好にすることができる。さらに、冷却後の収縮もほとんどないため、加工精度が向上するとともに、中空板１を加工してなる加工品２に反りが生じてしまったりすることもない。
一方、ビカット軟化点以下だと加圧点が白化し、また、融点以上だと表面に圧着痕が残ってしまう。 Further, in the present embodiment, since the hollow plate 1 is softened and processed at a temperature not lower than the Vicat softening temperature of the material resin and lower than the melting temperature, the melted material resin flows and the trace thereof is sealed. It is possible to improve the finish of the sealed edge without damaging the finish by appearing on the edge. Further, since there is almost no shrinkage after cooling, the processing accuracy is improved, and the processed product 2 obtained by processing the hollow plate 1 does not warp.
On the other hand, if it is below the Vicat softening point, the pressure point is whitened, and if it is above the melting point, pressure-bonded marks remain on the surface.

また、本実施形態によれば、切断具１０１としての抜刃型を適宜変更することで、中空板１を任意の形状に抜き加工することができ、中空板１の一方の表面側が押し延ばされて、端縁が封止された端縁封止部２０を有する種々の加工品２を提供することができる。   Further, according to the present embodiment, the hollow plate 1 can be punched into an arbitrary shape by appropriately changing the punching die type as the cutting tool 101, and one surface side of the hollow plate 1 is stretched. Thus, it is possible to provide various processed products 2 having the edge sealing portion 20 with the edges sealed.

以上、本発明について、好ましい実施形態を示して説明したが、本発明は、前述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。   Although the present invention has been described with reference to the preferred embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and various modifications can be made within the scope of the present invention. ..

例えば、前述した実施形態では、中空板１のライナーシート１３側に切断具１０１を押し当てて加工する例を図示して説明したが、バックシート１２側に切断具１０１を押し当てて加工してもよい。   For example, in the above-described embodiment, the example in which the cutting tool 101 is pressed against the liner sheet 13 side of the hollow plate 1 for processing has been described, but the cutting tool 101 is pressed against the back sheet 12 side for processing. Good.

また、前述した実施形態では、中空板１を型抜き加工する例を示して説明したが、これに限定されない。例えば、方形状に切り出された中空板１の一辺に沿って、直線状の切断具１０１を押し当てて本発明を適用した加工を施すことにより、当該辺側を切断するのと同時に、その端縁を封止するようにしてもよく、用途に応じて、中空板１の所望の部位に本発明を適用した加工を施すことができる。   Further, in the above-described embodiment, an example in which the hollow plate 1 is die-cut is described, but the present invention is not limited to this. For example, along the one side of the hollow plate 1 cut out in a rectangular shape, a linear cutting tool 101 is pressed to perform the processing to which the present invention is applied to cut the side, and at the same time, the end of the side is cut. The edges may be sealed, and the desired portion of the hollow plate 1 can be processed according to the present invention by applying the present invention.

１ 中空板
２ 加工品
２０ 端縁封止部
１０１ 切断具


1 Hollow Plate 2 Processed Product 20 Edge Sealing Part 101 Cutting Tool


Claims (3)

中空状の内部構造を有する合成樹脂製中空板の加工方法であって、
材料樹脂のビカット軟化温度以上、融解温度未満の温度に加熱された切断具を当該中空板に押し当てて、
軟化した部位に前記切断具が押し込まれていくように当該中空板を変形させながら、当該中空板を押し切ることを特徴とする合成樹脂製中空板中空板の加工方法。 A method for processing a synthetic resin hollow plate having a hollow internal structure,
Vicat softening temperature or higher of the material resin, pressing the cutting tool heated to a temperature lower than the melting temperature against the hollow plate,
A method for processing a hollow plate made of synthetic resin, wherein the hollow plate is pushed down while deforming the hollow plate so that the cutting tool is pushed into the softened portion. 前記切断具を前記中空板に押し当てるにあたり、前記切断具の刃先の単位長さ当たりの押圧力を５０〜３００ｋｇ／ｃｍに調整する請求項１に記載の合成樹脂製中空板中空板の加工方法。   The method for processing a synthetic resin hollow plate hollow plate according to claim 1, wherein the pressing force per unit length of the cutting edge of the cutting tool is adjusted to 50 to 300 kg / cm when the cutting tool is pressed against the hollow plate. .. 中空状の内部構造を有する合成樹脂製中空板を加工してなる加工品であって、
当該中空板の一方の表面側が押し延ばされて、端縁が封止された端縁封止部を有することを特徴とする合成樹脂製中空板加工品。 A processed product obtained by processing a synthetic resin hollow plate having a hollow internal structure,
A synthetic resin hollow plate processed product, characterized in that the hollow plate has an edge sealing portion in which one surface side of the hollow plate is stretched and the edges are sealed.
JP2018204650A 2018-10-31 2018-10-31 Synthetic resin hollow plate processing method and synthetic resin hollow plate processed product Pending JP2020069706A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117772A (en) * 1975-04-09 1976-10-16 Tomoku Kk Method of sealing cut section of hollow plate made of synthetic resin
JPS5334874A (en) * 1977-09-13 1978-03-31 Tomoku Kk Method of cutting and sealing of hollow synthetic plate
JPS597014A (en) * 1982-07-03 1984-01-14 Toyota Danball Kogyo Kk Method of sealing end of thermoplastic resin corrugated card-board
JP2008214865A (en) * 2007-02-28 2008-09-18 Takiron Co Ltd Synthetic resin double-layered plate and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117772A (en) * 1975-04-09 1976-10-16 Tomoku Kk Method of sealing cut section of hollow plate made of synthetic resin
JPS5334874A (en) * 1977-09-13 1978-03-31 Tomoku Kk Method of cutting and sealing of hollow synthetic plate
JPS597014A (en) * 1982-07-03 1984-01-14 Toyota Danball Kogyo Kk Method of sealing end of thermoplastic resin corrugated card-board
JP2008214865A (en) * 2007-02-28 2008-09-18 Takiron Co Ltd Synthetic resin double-layered plate and its manufacturing method

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