JP2536538B2 - Plastic sheet with folding line - Google Patents
Plastic sheet with folding lineInfo
- Publication number
- JP2536538B2 JP2536538B2 JP62196104A JP19610487A JP2536538B2 JP 2536538 B2 JP2536538 B2 JP 2536538B2 JP 62196104 A JP62196104 A JP 62196104A JP 19610487 A JP19610487 A JP 19610487A JP 2536538 B2 JP2536538 B2 JP 2536538B2
- Authority
- JP
- Japan
- Prior art keywords
- plastic sheet
- folding line
- line
- bending
- groove
- 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 - Fee Related
Links
Landscapes
- Cartons (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は折り曲げ線入りプラスチックシートに関す
る。TECHNICAL FIELD The present invention relates to a plastic sheet having a fold line.
（従来の技術） プラスチックシートを折り曲げ加工し、人形ケース、
包装容器等に加工する場合、折り曲げ用の罫線を付設し
この罫線にそつて折り曲げ加工する。従来の折り曲げ線
入りプラスチックシートにおいては、形成された折り曲
げ線は第４図に部分断面図を示すように、例えばプラス
チックシート２の厚み方向に凹ませた凹溝11からなるも
の等があったが、この凹溝11の底部は平坦なものであっ
た。(Prior art) Bending a plastic sheet, doll case,
When processing into packaging containers, etc., a ruled line for bending is attached and the process is performed along this ruled line. In the conventional plastic sheet with a folding line, the formed folding line has, for example, a groove 11 which is recessed in the thickness direction of the plastic sheet 2 as shown in the partial sectional view of FIG. The bottom of the groove 11 was flat.
（発明が解決しようとする問題点） 上記従来の折り曲げ線入りプラスチックシートは折り
曲げ加工したときに折り曲げ部が弾性により形状を回復
して所定角度に仕上らなかったり、加工後に、折り曲げ
部に隣接する平面が折り曲げ線に発生する応力の影響を
受けて、わん曲したりしやすいという問題があった。(Problems to be Solved by the Invention) In the above-described conventional plastic sheet with a folding line, when the bending process is performed, the bending part recovers its shape due to elasticity and is not finished at a predetermined angle, or after the processing, it is adjacent to the bending part. There is a problem that the flat surface is easily bent due to the influence of the stress generated in the bending line.
（問題点を解決するための手段） 本発明は上記問題点を解決するためになされたもので
以下図面に基づいて説明する。(Means for Solving the Problems) The present invention has been made to solve the above problems, and will be described below with reference to the drawings.
第１図は本発明の折り曲げ線入りプラスチックシート
の一例を示す拡大斜視図、第２図は第１図のII−II断面
図および折り曲げ線付設装置の一例を示す部分断面図、
第３図は第１図のIII−III断面図および折り曲げ線付設
装置の部分断面図であり、第４図は従来の折り曲げ線入
りプラスチックシートの一例を示す斜視図である。FIG. 1 is an enlarged perspective view showing an example of a plastic sheet with a folding line of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1 and an example of a folding line attachment device,
FIG. 3 is a sectional view taken along the line III-III of FIG. 1 and a partial sectional view of a bending line attaching device, and FIG. 4 is a perspective view showing an example of a conventional plastic sheet containing a bending line.
本発明は、第１〜３図に示すように折り曲げ線１入り
プラスチックシート２において、前記折り曲げ線を形成
する凹溝11の底部にその長さ方向にそって断続孔３を形
成したことを特徴とする折り曲げ線入りプラスチックシ
ートに関するものである。The present invention is characterized in that, as shown in FIGS. 1 to 3, in the plastic sheet 2 containing the folding line 1, the intermittent hole 3 is formed along the lengthwise direction at the bottom of the concave groove 11 forming the folding line. And a plastic sheet with folding lines.
プラスチックシート２としては、ポリ塩化ビニル、ポ
リプロピレン等の硬質シートを用いることができる。そ
の厚さは通常、0.1〜1.0mm程度のものが使用できる。As the plastic sheet 2, a hard sheet such as polyvinyl chloride or polypropylene can be used. Usually, the thickness can be about 0.1 to 1.0 mm.
折り曲げ線１は第１〜３図に示すようにプラスチック
シート２の表面に凹溝11を形成することにより折り曲げ
易くしたものが用いられる。図示しないか折り曲げ線の
範囲に複数の凹溝を併設したもの等、適宣の形状が使用
できる。The folding line 1 is formed by forming a groove 11 on the surface of the plastic sheet 2 as shown in FIGS. A suitable shape can be used, such as one not shown in the drawing or having a plurality of concave grooves provided in the range of the bending line.
凹溝11の断面形状は第３図に示す台形状でもよいがこ
れに限らない。凹溝11の深さＡ、幅Ｂはプラスチックシ
ート２の材質、厚さ等により適宣設定できるが、例えば
厚さ0.25mmの硬質のポリ塩化ビニルシートの場合を例に
とると凹溝11の深さＡは0.10〜0.20mm、幅Ｂは0.15〜0.
75mm程度が好ましい。The cross-sectional shape of the groove 11 may be trapezoidal as shown in FIG. 3, but is not limited to this. The depth A and the width B of the groove 11 can be appropriately set depending on the material and thickness of the plastic sheet 2. For example, in the case of a hard polyvinyl chloride sheet having a thickness of 0.25 mm, the groove 11 of the groove 11 is The depth A is 0.10 to 0.20 mm and the width B is 0.15 to 0.
About 75 mm is preferable.
断続孔３は前記凹溝11の底部に該底部の長さ方向にそ
って形成すればよい。この断続孔３が、折り曲げたとき
に凹溝11に発生する歪を長さ方向に分散均一化して局部
的な応力集中を防ぐとともに弾性による形状回復を防ぐ
ものである。断続孔３の形状には特に制限はないがたと
えばプラスチックシート２の厚さが0.25mmのときは、前
記凹溝11のサイズに応じて第２、３図に示すように、開
口部の長さＣが0.1〜2mm、間隔Ｄが0.3〜3mm程度が好適
に採用できる。The intermittent hole 3 may be formed in the bottom of the groove 11 along the length of the bottom. The intermittent hole 3 serves to disperse and evenly distribute the strain generated in the concave groove 11 in the lengthwise direction to prevent local stress concentration and shape recovery due to elasticity. The shape of the interrupted hole 3 is not particularly limited, but when the thickness of the plastic sheet 2 is 0.25 mm, for example, the length of the opening depends on the size of the groove 11, as shown in FIGS. A C of 0.1 to 2 mm and a spacing D of about 0.3 to 3 mm can be suitably adopted.
本発明のプラスチックシートを製造するためには、例
えば第２、３図に示すように、刃先41を断続的に切り欠
いて得られた凹凸42を形成した罫線刃４と、平坦な受け
台５との間でプラスチックシート２を挟圧することによ
り、プラスチックシートの表面に凹溝11および断続孔３
が同時に形成される。この時断続孔が完全に開口してい
なくとも、折曲げることにより開口する。また罫線刃
４、受け台５は加熱してあってもよい。In order to manufacture the plastic sheet of the present invention, for example, as shown in FIGS. 2 and 3, a ruled line blade 4 having irregularities 42 formed by intermittently cutting a cutting edge 41 and a flat pedestal 5 are provided. By sandwiching the plastic sheet 2 between the concave portion 11 and the intermittent hole 3 on the surface of the plastic sheet.
Are formed at the same time. At this time, even if the intermittent hole is not completely opened, it is opened by bending. Further, the ruled line blade 4 and the pedestal 5 may be heated.
（発明の効果） 本発明は、折り曲げ線入りプラスチックシートにおい
て、前記折り曲げ線を形成する凹溝の底部にその長さ方
向にそって断続する断続孔を形成したことを特徴とする
折り曲げ線入りプラスチックシートであるから、折り曲
げのときに生ずる歪や弾性力が凹溝の長さ方向に分散し
て均一化し小さくなるので、折り曲げ角度が正確にな
り、組み立て後の平面性が良好となる。(Effects of the Invention) The present invention is a plastic sheet containing a fold line, characterized in that, in a plastic sheet with a fold line, an intermittent hole is formed at a bottom portion of a concave groove forming the fold line, which is intermittent along the length direction thereof. Since it is a sheet, the strain and elastic force generated at the time of bending are dispersed and uniformized in the length direction of the concave groove, and the bending angle becomes accurate, and the flatness after assembly becomes good.
第１図は本発明の折り曲げ線入りプラスチックシートの
一例を示す拡大斜視図、第２図は第１図のII−II断面図
および折り曲げ線付設装置の一例を示す部分断面図、第
３図は第１図のIII−III断面図および折り曲げ線付設装
置の部分断面図であり、第４図は従来の斜視図である。 １……折り曲げ線、11……凹溝 ２……プラスチックシート ３……断続孔FIG. 1 is an enlarged perspective view showing an example of a plastic sheet containing a folding line of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1 and an example of a folding line attaching apparatus, and FIG. FIG. 3 is a III-III sectional view of FIG. 1 and a partial sectional view of a bending line attachment device, and FIG. 4 is a conventional perspective view. 1 ... Bending line, 11 ... Recessed groove 2 ... Plastic sheet 3 ... Intermittent hole
Claims (1)
て、前記折り曲げ線を形成する凹溝の底部にその長さ方
向にそって断続孔を形成したことを特徴とする折り曲げ
線入りプラスチックシート。1. A plastic sheet containing a folding line, wherein a discontinuous hole is formed along the lengthwise direction at the bottom of a groove forming the folding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62196104A JP2536538B2 (en) | 1987-08-05 | 1987-08-05 | Plastic sheet with folding line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62196104A JP2536538B2 (en) | 1987-08-05 | 1987-08-05 | Plastic sheet with folding line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440317A JPS6440317A (en) | 1989-02-10 |
| JP2536538B2 true JP2536538B2 (en) | 1996-09-18 |
Family
ID=16352297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62196104A Expired - Fee Related JP2536538B2 (en) | 1987-08-05 | 1987-08-05 | Plastic sheet with folding line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2536538B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249626A (en) * | 1989-03-24 | 1990-10-05 | Mitsubishi Plastics Ind Ltd | Ruled line providing method |
| JPH03114325U (en) * | 1990-03-09 | 1991-11-25 | ||
| US5302435A (en) * | 1992-03-24 | 1994-04-12 | Mitsubishi Plastics Industries Limited | Plastic sheet with a ruled line for bending |
| DE59505382D1 (en) * | 1995-08-04 | 1999-04-22 | Seufert Kunststoffverpackung G | Foil cutting for packaging |
| EP1106523B1 (en) * | 1998-06-17 | 2004-08-04 | Fuji Seal Inc. | Sheet and blade for shaping sheet bent portion |
| JP3860349B2 (en) * | 1998-11-27 | 2006-12-20 | 三菱樹脂株式会社 | Ruled line forming blade for plastic sheet and plastic sheet |
| US6923698B1 (en) * | 2004-03-10 | 2005-08-02 | Peter M. Simonson | Life preserver assembly |
| JPWO2005101066A1 (en) * | 2004-04-12 | 2008-03-06 | 古河電気工業株式会社 | Light reflector |
| JP2009184730A (en) * | 2007-08-03 | 2009-08-20 | Suntory Holdings Ltd | Shipping box, corrugated cardboard blank sheet, and rule mark ring assembly |
| JP2010036930A (en) * | 2008-08-01 | 2010-02-18 | Esutsuu Corporation:Kk | Folding type storing box |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS496852U (en) * | 1972-04-19 | 1974-01-21 | ||
| JPS6139544U (en) * | 1984-08-20 | 1986-03-12 | 眞幾 佐藤 | Simple chemical liquid divider |
-
1987
- 1987-08-05 JP JP62196104A patent/JP2536538B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440317A (en) | 1989-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |