JP2006036340A - Sheet tearing structure and production method for the same - Google Patents

Sheet tearing structure and production method for the same Download PDF

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JP2006036340A
JP2006036340A JP2004222975A JP2004222975A JP2006036340A JP 2006036340 A JP2006036340 A JP 2006036340A JP 2004222975 A JP2004222975 A JP 2004222975A JP 2004222975 A JP2004222975 A JP 2004222975A JP 2006036340 A JP2006036340 A JP 2006036340A
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sheet
tearing
cut
portions
valley
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Hideaki Hashimoto
秀明 橋本
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MEIWA NUKIGATA KK
YUKATA PACKAGE KK
Idemitsu Unitech Co Ltd
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MEIWA NUKIGATA KK
YUKATA PACKAGE KK
Idemitsu Unitech Co Ltd
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Priority to JP2004222975A priority Critical patent/JP2006036340A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To easily tear a sheet regardless of a tearing direction and to prevent an edge along which the sheet is torn from injuring the finger and so on. <P>SOLUTION: A tearing structure P for tearing the sheet (1) used for a plastic sheet case or paper sheet case includes a pair of upper and lower wavy cuts formed close to and almost parallel to each other, having a wave phase shifted so that mount segments 2A and valley segments 2b face each other. The tearing structure P also includes discontinuous sections 3 in which cuts 2 are not made at the tops of the mountain segments 2A of the upper cut 2 and at the bottoms of the valley segments 2B of the lower cut 2. The bottoms of the valley segments 2B of the upper cut 2 and the tops of the mountain segments 2A of the lower cut 2 are curved in the shape of an arc. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えばプラスチック製シートまたは紙製シート等によって形成された例えば菓子箱、化粧品箱、薬箱等のシートケースを箱状のままで切り裂き、開封が可能なシートの切り裂き構造とその作製方法に関するものである。   The present invention relates to a sheet tearing structure capable of tearing and opening a sheet case such as a confectionery box, a cosmetic box, a medicine box, etc. formed of, for example, a plastic sheet or a paper sheet in a box shape, and a manufacturing method thereof. It is about.

従来から、例えばクリアパッケージ等のプラスチック製シート、または紙製シート等によって形成された密閉性のあるシートケース１として、開封されたか否かがわかるように切り裂き構造による開封手段を備えたものが提案されている。その切り裂き構造としては、当該シートケース１の例えば中央部分を周回するようにして形成された図４（ａ）に示すような上下に近接した一対のミシン刃形状の連続した切り込み部２、もしくは図４（ｂ）に示すような窄まり部分を不連続に配したジッパー形状の連続した切り込み部２等による切り裂き構造Ｐ部分を一端側から引き裂くことにより、当該シートケース１を破断して（図１参照）二つに折るようにあるいは切り分け、中身を取り出すのであった。
特になし Conventionally, as a sheet case 1 having a sealing property formed by a plastic sheet such as a clear package or a paper sheet or the like, a sheet case having a tearing structure so as to know whether or not it has been opened has been proposed. Has been. As the tearing structure, for example, a pair of continuous cutting portions 2 in the form of a sewing machine blade close to the top and bottom as shown in FIG. The sheet case 1 is broken by tearing from the one end side the tear structure P portion by the continuous notch portion 2 or the like having a zipper shape in which the narrowed portions are discontinuously arranged as shown in FIG. (Ref.) The contents were taken out in two or folded.
nothing special

しかしながら、従来における上記の切り裂き構造Ｐでは、シートケース１を箱状のまま上下もしくは左右等に切り裂くことは材料の性質上、容易には切り分けることができないものであった。例えばミシン刃状の形状の切り込み部２による切り裂き構造Ｐの場合では、切り裂き時にかかる力が切り裂き方向と同上側向にかかるために切り裂き難いものであった。また、ジッパー状等の形状の切り込み部２による切り裂き構造Ｐの場合では、切り裂き方向が一定方向でないと切り分け難いものとなり、しかも切り分けた時に切り残したシートのバリと称するノコギリ刃状の突起部分が残るため、シート自体がやや硬質な素材であるプラスチック製シートである場合は特に、これに手指を引っ掛けて当該手指を怪我してしまう虞れがあった。   However, in the above-described tearing structure P, it is difficult to cut the sheet case 1 up and down or left and right in a box shape because of the nature of the material. For example, in the case of the tearing structure P by the cutting portion 2 having a sewing blade shape, the force applied at the time of tearing is applied in the same upward direction as the tearing direction, so that it is difficult to tear. Further, in the case of the tear structure P formed by the zipper-shaped cut portion 2, it is difficult to separate unless the tear direction is a constant direction, and the saw blade-shaped projection portion called a burr of the sheet left after the separation is formed. Therefore, particularly when the sheet itself is a plastic sheet, which is a slightly hard material, there is a risk that the finger may be caught by the finger and the finger may be injured.

そこで本発明は叙上のような従来存した諸事情に鑑み創出されたもので、各種の硬質材質によるシート、特に紙箱よりも切り裂き難い硬質な材料による例えばプラスチック材質によるクリアパッケージ等のシートケースを形成するシートであっても、切り裂き方向にかかわらずに容易且つ安全に当該シートを切り分けることができ、しかも切り分けた後で手指等を傷付けることがないようにしたシートの切り裂き構造とその作製方法を提供することを目的とする。   Therefore, the present invention was created in view of the existing circumstances as described above, and various hard material sheets, in particular, sheet cases such as clear packages made of a plastic material made of a hard material that is harder to tear than a paper box. A sheet tearing structure that can easily and safely cut a sheet to be formed regardless of the direction of tearing, and that does not hurt fingers etc. The purpose is to provide.

上述した課題を解決するため、本発明にあっては、シート（１）を切り裂くことが可能な切り裂き構造Ｐであって、山部分２Ａ、谷部分２Ｂそれぞれが合致対向するよう互いに波の位相をずらした状態で略並行して近接配置させた波線状の上下一対の切り込み部２と、上側の切り込み部２の山部分２Ａの頂点、下側の切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３とを備えたものである。
そして、上側の谷部分２Ｂの底点、下側の山部分２Ａの頂点それぞれは円弧状に湾曲しているものとすることができる。
また、シート（１）は、プラスチック製または紙製のシートケース１に使用されるものとできる。
さらに、シート（１）を切り裂くことが可能な切り裂き構造Ｐの作製方法であって、連続した波の各頂点における刃先部分を切除して成る不連続波型状の抜き型刃Ｑを、互いに波の位相をずらして山部分２Ａ、谷部分２Ｂそれぞれが合致対向するようシート（１）に対して略並行配置した状態で押し込んで上下一対の切り込み部２を形成し、上側に形成される切り込み部２の山部分２Ａの頂点、下側に形成される切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３を配置形成するものである。 In order to solve the above-described problem, in the present invention, the tearing structure P is capable of tearing the sheet (1), and the phase of the waves is set so that the crest portion 2A and the trough portion 2B are opposed to each other. A pair of wavy upper and lower notch portions 2 arranged close to each other in a shifted state, the apex of the peak portion 2A of the upper notch portion 2, and the bottom of the valley portion 2B of the lower notch portion 2, respectively. It is provided with a discontinuous portion 3 that does not form the cut portion 2.
The bottom point of the upper valley portion 2B and the apex of the lower mountain portion 2A can be curved in an arc shape.
The sheet (1) can be used for a plastic or paper sheet case 1.
Furthermore, it is a manufacturing method of the tearing structure P which can tear a sheet | seat (1), Comprising: The cutting edge blade Q of the discontinuous wave shape formed by excising the blade edge | tip part in each vertex of a continuous wave is mutually waved. The top and bottom cut portions 2 are formed by pushing in a state of being substantially parallel to the sheet (1) so that the crest portions 2A and the trough portions 2B are in opposition to each other. The discontinuous portions 3 that do not form the cut portions 2 are arranged and formed at the apexes of the two crest portions 2A and the bottom points of the valley portions 2B of the cut portions 2 formed on the lower side.

以上のように構成された本発明に係るシートの切り裂き構造Ｐにあって、切り込み部２を形成しない不連続部分３を有する切り裂き構造Ｐは、切り裂き時にかかる力が切り裂き方向と略直角に作用するため、シート（１）に対し方向性にかかわらない切り分けを可能にさせると共に、切り裂き後には、波形に形成された破断縁部の窪み部分である下側の谷部分２Ｂ、上側の山部分２Ａにバリが形成されて手指に対する接触を防止させ、また下側の山部分２Ａの頂点、上側の谷部分２Ｂの頂点それぞれが湾曲しているため、手指に対する接触をソフトにさせる。
また、本発明に係るシートの切り裂き構造Ｐの作製方法にあって、連続した波の各頂点における刃先部分を切除して成る不連続波型状の抜き型刃Ｑは、互いに波の位相をずらした状態で上下一対となるようにシート（１）に押し込むことで、当該シート（１）に対する波状の切り込み部２の不連続部分３を連続形成させる。 In the tearing structure P of the sheet according to the present invention configured as described above, the tearing structure P having the discontinuous portion 3 that does not form the notching portion 2 has a force applied at the time of tearing substantially perpendicular to the tearing direction. Therefore, the sheet (1) can be cut regardless of the directionality, and after the tearing, the lower trough portion 2B and the upper crest portion 2A, which are recess portions of the rupture edge formed in the corrugated shape, are formed. A burr is formed to prevent contact with the finger, and since the apex of the lower peak portion 2A and the apex of the upper valley portion 2B are curved, the touch with the finger is softened.
Also, in the method of manufacturing the sheet tearing structure P according to the present invention, the discontinuous corrugated punching blade Q formed by cutting out the cutting edge portion at each vertex of the continuous wave shifts the phase of the wave from each other. By pushing into the sheet (1) so as to form a pair of upper and lower in the state, the discontinuous portion 3 of the wavy cut portion 2 with respect to the sheet (1) is continuously formed.

本発明によれば、各種の硬質材質によるシート（１）、特に紙箱の素材に比し硬質で、切り裂き難い硬質な材料による例えばプラスチック材質によるクリアパッケージ等のシートケース１を形成するシート（１）であっても、切り裂き方向にかかわらずに容易且つ安全に当該シート（１）を切り分けることができ、しかも切り分けた後の切裂線である破断縁部における突部分は、下側では円弧状に湾曲した山部分２Ａ、上側では谷部分２Ｂそれぞれが連続するから、手指等を傷付けることがないようにすることができる。   According to the present invention, a sheet (1) made of various hard materials, in particular, a sheet (1) that forms a sheet case 1 such as a clear package made of a hard material that is harder than a material of a paper box and hard to tear. Even so, the sheet (1) can be easily and safely cut regardless of the direction of tearing, and the protruding portion at the breaking edge, which is the tear line after cutting, is arcuate on the lower side. Since the curved crest portion 2A and the trough portion 2B are continuous on the upper side, it is possible to prevent the fingers and the like from being damaged.

すなわちこれは本発明が、山部分２Ａ、谷部分２Ｂそれぞれが合致対向するよう互いに波の位相をずらした状態で略並行して近接配置させた波線状の上下一対の切り込み部２と、上側の切り込み部２の山部分２Ａの頂点、下側の切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３とを備えたからであり、これにより、切り裂き時にかかる力が切り裂き方向と略直角に作用するものとなって、シート（１）に対し方向性にかかわらずに切り分けが可能となる。また、切り裂き後には、波形に形成された破断縁部の窪み部分である、下側の谷部分２Ｂ、上側の山部分２Ａそれぞれにバリが形成されるから、これらのバリは手指に触れ難いものとなって手指を傷付けるのを未然に防止でき、一方、破断縁部となる上側の谷部分２Ｂ、下側の山部分２Ａそれぞれは円弧状で、何等の突起部が形成されないため、手指にはソフトに接触させるのである。   That is, the present invention includes a pair of wavy upper and lower cut portions 2 that are arranged in close proximity to each other in a state in which the phases of the waves are shifted so that each of the crest portion 2A and the trough portion 2B face each other. This is because a discontinuous portion 3 that does not form the cut portion 2 is provided at each of the apex of the peak portion 2A of the cut portion 2 and the bottom point of the valley portion 2B of the lower cut portion 2, whereby the force applied at the time of cutting is reduced. It acts substantially at right angles to the direction of tearing, and it is possible to cut the sheet (1) regardless of the directionality. In addition, after the tearing, burrs are formed in the lower valley portion 2B and the upper peak portion 2A, which are the recessed portions of the rupture edge formed in the corrugated shape, and these burrs are difficult to touch the fingers. The upper trough portion 2B and the lower crest portion 2A, which are the rupture edges, are each arc-shaped, and no protrusions are formed on the fingers. It is in contact with the software.

また、シート（１）は、プラスチック製または紙製のシートケース１に使用されるので、材質の硬度に依らずに当該シートケース１を箱状のまま上下もしくは左右等に容易に切り裂くことができる。   In addition, since the sheet (1) is used for a plastic or paper sheet case 1, the sheet case 1 can be easily cut up and down or left and right in a box shape regardless of the hardness of the material. .

さらに、連続した波の各頂点における刃先部分を切除して成る不連続波型状の抜き型刃Ｑを、互いに波の位相をずらして山部分２Ａ、谷部分２Ｂそれぞれが合致対向するようシート（１）に対して略並行配置した状態で押し込んで上下一対の切り込み部２を形成し、上側に形成される切り込み部２の山部分２Ａの頂点、下側に形成される切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３が配置形成されるので、切り裂き方向にかかわらずにシート（１）を切り分けることができる切り裂き構造Ｐが容易に形成することができる。   Furthermore, the discontinuous corrugated punching blade Q formed by cutting out the cutting edge portion at each vertex of the continuous wave is shifted so that the crest portion 2A and the trough portion 2B are in opposition to each other by shifting the phase of the wave. 1) A pair of upper and lower cut portions 2 are formed by being pushed in a state of being arranged substantially in parallel with each other, the apex of the peak portion 2A of the cut portion 2 formed on the upper side, and the valley portion of the cut portion 2 formed on the lower side. Since the discontinuous portions 3 that do not form the notch portions 2 are arranged and formed at the bottom points of 2B, the tear structure P that can separate the sheet (1) regardless of the tear direction can be easily formed.

また、シート（１）は箱を構成するシートケース１に適用するのみならず、一般的な平坦状のシート部材に適用することも可能である。   Further, the sheet (1) can be applied not only to the sheet case 1 constituting the box but also to a general flat sheet member.

尚、上記の課題を解決するための手段、発明の効果の項夫々において付記した符号は、図面中に記載した構成各部を示す部分との参照を容易にするために付したもので、図面中の符号によって示された構造・形状に本発明が限定されるものではない。   Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

以下図面を参照して本発明を実施するための最良の一形態を説明すると、図において示される符号１は、例えばプラスチック製シート、または紙製シート等によって密閉性のある箱状に形成されたシートケースであり、このシートケース１を箱状のまま上下もしくは左右等に切り裂くことで当該シートケース１を二つに折ったり、切り分けたりして開封することができるよう、箱体組立時のシートケース１を貫通するような不連続波線の破断部となって形成された切り裂き構造Ｐを備えている。   The best mode for carrying out the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the figure is formed in a box-like shape having a sealing property, for example, by a plastic sheet or a paper sheet. A sheet case that is assembled in a box body so that the sheet case 1 can be opened in a box-like shape by tearing it up and down or left and right, etc. A tearing structure P formed as a broken portion of a discontinuous wavy line penetrating the case 1 is provided.

尚、本実施の形態においては、シートケース１に対して本発明の切り裂き構造Ｐを使用しているが、このようなケースとなるシートのみでなく、ケース以外に使用される各種のシートにおける切り裂き構造Ｐとしても利用可能であることは勿論である。   In the present embodiment, the tearing structure P of the present invention is used for the sheet case 1, but not only the sheet that becomes such a case, but also the tearing of various sheets used other than the case. Of course, the structure P can also be used.

この切り裂き構造Ｐは、図１に示すように、矩形箱状に形成されたシートケース１側面の例えば中央部分もしくは左右いずれか側寄り部分において互いに略並行となって周回付設するようにした上下一対の不連続波線による切り込み部２によって形成されていて、この切り込み部２は、図２のシートケース１の展開図に示すように、例えばシートケース１中央における前面、左右側面、後面にわたって、例えば上下に近接した山部分２Ａ、谷部分２Ｂそれぞれが合致対向するように互いに波の位相をずらした状態で近接配置するように設けてある。   As shown in FIG. 1, the tear structure P includes a pair of upper and lower parts arranged so as to circulate substantially in parallel with each other at, for example, the central portion or the left or right side portion of the side surface of the seat case 1 formed in a rectangular box shape. As shown in the development view of the seat case 1 in FIG. 2, for example, the notch 2 extends over the front, left and right sides, and the rear surface at the center of the seat case 1, for example, up and down. The crest portion 2A and the trough portion 2B that are close to each other are arranged so as to be close to each other with their wave phases shifted from each other so as to face each other.

作製に際しては、図３に示すように、連続した波の各頂点における刃先部分を切除して成る不連続波型状の抜き型刃Ｑを、箱展開状態のシートケース１面に対し、互いに波の位相をずらした状態で、組立後における箱体の上下で一対にして近接配置されるように、作製するときの当該シートケース１の上方側に配した例えばプレス機（図示せず）等によって押し込むことで、ケース上側に形成配置される切り込み部２の山部分２Ａの頂点、下側に形成配置される切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３が配置形成されるようにしてある。尚、上下は、組立後における箱体における上下位置を示すのみであり、箱体が左右のものとなれば左右部として認識されるもので、相対的なものである。   In the production, as shown in FIG. 3, the discontinuous wave-shaped punching blade Q formed by cutting out the blade edge portions at the vertices of the continuous wave is waved with respect to the surface of the sheet case 1 in the unfolded state. For example, by a press machine (not shown) disposed on the upper side of the sheet case 1 so as to be disposed close to each other in a pair on the top and bottom of the box after assembly. The discontinuous part 3 which does not form the notch part 2 at the apex of the peak part 2A of the notch part 2A formed and arranged on the upper side of the case and the bottom point of the valley part 2B of the notch part 2 formed and arranged on the lower side by pushing. Are arranged and formed. Note that the top and bottom only indicate the vertical position of the box after assembly, and if the box is left and right, it is recognized as the left and right parts and is relative.

そして、少なくとも上側の切り込み部２の谷部分２Ｂの底点、下側の切り込み部２の山部分２Ａの頂点それぞれ、すなわち切裂縁部において突状に突出する部分は円弧状に湾曲しており、手指等が触れることがあっても手指等が引っ掛からないようにしてある。   At least the bottom of the valley portion 2B of the upper cut portion 2 and the apex of the mountain portion 2A of the lower cut portion 2, that is, the portion protruding in a projecting manner at the cut edge is curved in an arc shape. Even if a finger or the like is touched, the finger or the like is not caught.

このとき切り込み部２は、シートケース１を貫通した波線の破断部となって形成されていても、切り込み部２を介しての上下側が前記不連続部分３によって繋がっているため、外部から強制的に切り裂き力をかけなければ容易に切離されないようにしてある。   At this time, even though the cut portion 2 is formed as a broken portion of a wavy line penetrating the seat case 1, the upper and lower sides through the cut portion 2 are connected by the discontinuous portion 3. It is designed so that it is not easily separated unless a tearing force is applied.

また、シートケース１の糊代縁片部１Ａに対応する抜き型刃Ｑ部分は、当該糊代縁片部１Ａを直線状に破断するための直線刃Ｒとして形成しておく。この糊代縁片部１Ａは箱体組立時に箱体壁内面に接着されるから、切り裂き構造Ｐ位置に対応する部分は、切り裂きと同時に切離されるように切離線で区画された切離部１Ｂとなっている。また、切り裂き構造Ｐの一部には箱体の縁部に位置させて切り裂き開始端となるフラップ１Ｃを形成してある。   Further, the punching blade Q corresponding to the glue margin piece 1A of the sheet case 1 is formed as a straight blade R for breaking the glue margin piece 1A in a straight line. Since this glue margin piece 1A is adhered to the inner surface of the box body when the box is assembled, the portion corresponding to the tearing structure P position is separated by a separation line 1B so as to be separated simultaneously with the tearing. It has become. Further, a flap 1C serving as a tear start end is formed in a part of the tear structure P and is positioned at the edge of the box.

次に、本構成による切り裂き構造Ｐの作製方法について説明すれば、図３に示すように、連続した波の各頂点における刃先部分を硬度の高いカッター刃等で傷付け切欠する等適宜切除して成る不連続波型状の抜き型刃Ｑを例えばプレス機（図示せず）等のチャック部に装着しておく。そして、プレス機下方側にシートケース１を箱展開状態にして配置してておく。   Next, the manufacturing method of the tearing structure P according to the present configuration will be described. As shown in FIG. 3, the cutting edge portion at each vertex of the continuous wave is appropriately cut off by scratching with a high-hardness cutter blade or the like. The discontinuous wave shaped punching blade Q is mounted on a chuck portion such as a press (not shown). Then, the sheet case 1 is placed in a box unfolded state below the press machine.

プレス機下方側に配置させた展開状態のシートケース１に対し、抜き型刃Ｑが例えばシートケース１中央における前面、左右側面、後面にわたって対向配置し、抜き型刃Ｑの直線刃Ｒ部分がシートケース１の糊代縁片部１Ａに対向配置するようにしておく。そして、抜き型刃Ｑを、互いに波の位相をずらして上下で山部分２Ａ、谷部分２Ｂそれぞれが合致対向するよう対となる配置状態で押し込む。   With respect to the unfolded sheet case 1 arranged on the lower side of the press machine, for example, the punching blade Q is disposed facing the front, left and right sides, and rear surface at the center of the sheet case 1, and the straight blade R portion of the punching blade Q is the sheet. It is arranged so as to face the glue margin piece 1A of the case 1. Then, the punching blades Q are pushed in a state of being arranged in pairs so that the crest portions 2A and the trough portions 2B are opposed to each other with the wave phase shifted from each other.

こうして箱展開状態のシートケース１面に対し、互いに波の位相をずらした状態で上下一対の切り込み部２が略並行した状態で近接配置されると同時に箱体上側に位置して形成される切り込み部２の山部分２Ａの頂点、箱体下側に位置して形成される切り込み部２の谷部分２Ｂの底点それぞれに切り込み部２を形成しない不連続部分３が形成された状態となる。   In this way, a pair of upper and lower notch portions 2 are arranged close to each other in a state of being shifted in phase with respect to the surface of the sheet case 1 in the unfolded state of the box, and at the same time, the notches formed on the upper side of the box The discontinuous part 3 which does not form the notch part 2 is formed in each of the peak of the peak part 2A of the part 2 and the bottom point of the valley part 2B of the notch part 2 formed at the lower side of the box.

また、シートケース１の糊代縁片部１Ａにおける切り込み部２は、抜き型刃Ｑの直線刃Ｒ部分によって直線状に破断可能な切離線で区画された切離部１Ｂとされ、箱体のいずれかの縁部位置に波線の切り込み部２を端から引き裂くための延長部となるフラップ１Ｃを形成する。   In addition, the cut portion 2 in the glue margin piece portion 1A of the sheet case 1 is a separation portion 1B defined by a separation line that can be broken linearly by the straight blade R portion of the punching blade Q, A flap 1C serving as an extension for tearing the wavy notch 2 from the end is formed at any edge position.

こうしてシートケース１は、箱形に組み立てられた状態で中身を取り出す際には、切り裂き構造Ｐにおける切り込み部２をフラップ１Ｃから引き剥がすことで当該シートケース１を二つに折ったり、切り分けたりするのである。このとき切り込み部２を形成しない不連続部分３によって、切り裂き時にかかる力が切り裂き方向と略直角に作用するものとなるため、シートケース１に対し方向性にかかわらずに切り裂きが可能となり、切り裂き後には、波形に形成された破断縁部の窪み部分、すなわち上側の切り込み部２ではその山部分２Ａに、下側の切り込み部２ではその谷部分２Ｂにバリが形成されるため、手指に対する鋭利部分の接触を防止させ、また、破断縁部に突出する部分、すなわち上側の切り込み部２ではその谷部分２Ｂに、下側の切り込み部２ではその山部分２Ａが湾曲状に突出されているために、手指にソフトに接触し、損傷させないのである。   Thus, when the seat case 1 is taken out in the state of being assembled in a box shape, the sheet case 1 is folded or cut into two parts by peeling off the notch 2 in the tearing structure P from the flap 1C. It is. At this time, the discontinuous portion 3 that does not form the notch portion 2 causes the force applied at the time of tearing to act substantially at right angles to the tearing direction, so that the sheet case 1 can be torn regardless of the directionality, and after the tearing, The burrs are formed in the corrugated portion of the breaking edge, that is, the burrs are formed in the crest portion 2A in the upper cut portion 2 and in the trough portion 2B in the lower cut portion 2, so that the sharp portion with respect to the fingers In addition, the portion protruding to the breaking edge, that is, the valley portion 2B of the upper cut portion 2 and the peak portion 2A of the lower cut portion 2 protrude in a curved shape. The finger touches softly and does not damage it.

尚、図示を省略したが、必要があれば、対状に並行配置される切り込み部２における山部分２Ａ、谷部分２Ｂそれぞれは全く並行状態に配置することも可能であるも、切り裂き構造Ｐの切離に際し、十分に注意しなければ切り込み部２外を不意に切裂させたり、切裂作業に若干の困難性を伴ったりするおそれがある。   Although not shown in the figure, if necessary, the crest portions 2A and trough portions 2B in the cut portions 2 that are arranged in parallel in a pair can be arranged in a completely parallel state. If sufficient care is not taken at the time of cutting, the outside of the cut portion 2 may be cut off unexpectedly, or the cutting work may be accompanied by some difficulty.

本発明を実施するための最良の形態を示すシートケースの斜視図である。It is a perspective view of a seat case showing the best mode for carrying out the present invention. 同じくシートケースの展開図である。Similarly, it is a development view of the seat case. 切り裂き構造の作製方法を説明するための斜視図である。It is a perspective view for demonstrating the production method of a tear structure. 従来例における切り裂き構造を示すもので、（ａ）は一対のミシン刃形状の連続した切り込み部による切り裂き構造の一部切欠平面図、（ｂ）はジッパー形状の連続した切り込み部による切り裂き構造の一部切欠平面図である。1 shows a tearing structure in a conventional example, where (a) is a partially cutaway plan view of a tearing structure formed by a pair of sewing blade-shaped continuous notches, and (b) is a tearing structure formed by a zipper-shaped continuous notch. FIG.

符号の説明Explanation of symbols

Ｐ…切り裂き構造 Ｑ…抜き型刃
Ｒ…直線刃
１…シートケース（シート） １Ａ…糊代縁片部
１Ｂ…切離部 １Ｃ…フラップ
２…切り込み部 ２Ａ…山部分
２Ｂ…谷部分 ３…不連続部分
P ... tearing structure Q ... punching die R ... straight blade 1 ... sheet case (sheet) 1A ... glue margin piece 1B ... separation part 1C ... flap 2 ... cut part 2A ... mountain part 2B ... valley part 3 ... non Continuous part

Claims (4)

シートを切り裂くことが可能な切り裂き構造であって、山部分、谷部分それぞれが合致対向するよう互いに波の位相をずらした状態で略並行して近接配置させた波線状の上下一対の切り込み部と、上側の切り込み部の山部分の頂点、下側の切り込み部の谷部分の底点それぞれに切り込み部を形成しない不連続部分とを備えたことを特徴とするシートの切り裂き構造。   A tearing structure capable of tearing a sheet, and a pair of wavy upper and lower notch portions arranged in close proximity to each other in a state where the phases of the waves are shifted from each other so that the crest portion and the trough portion are in opposition to each other. A sheet tearing structure comprising: an apex of a crest portion of an upper cut portion; and a discontinuous portion that does not form a cut portion at each bottom point of a valley portion of a lower cut portion. 上側の谷部分の底点、下側の山部分の頂点それぞれは円弧状に湾曲している請求項１記載のシートの切り裂き構造。   2. The sheet tearing structure according to claim 1, wherein each of a bottom point of the upper valley portion and a vertex of the lower mountain portion is curved in an arc shape. シートは、プラスチック製または紙製のシートケースに使用されるものである請求項１または２記載のシートの切り裂き構造。   The sheet tearing structure according to claim 1 or 2, wherein the sheet is used for a plastic or paper sheet case. シートを切り裂くことが可能な切り裂き構造の作製方法であって、連続した波の各頂点における刃先部分を切除して成る不連続波型状の抜き型刃を、互いに波の位相をずらして山部分、谷部分それぞれが合致対向するようシートに対して略並行配置した状態で押し込んで上下一対の切り込み部を形成し、上側に形成される切り込み部の山部分の頂点、下側に形成される切り込み部の谷部分の底点それぞれに切り込み部を形成しない不連続部分を配置形成することを特徴としたシートの切り裂き構造の作製方法。
A method for producing a tearing structure capable of tearing a sheet, wherein a discontinuous corrugated punching blade formed by cutting off the cutting edge portion at each vertex of a continuous wave is shifted from each other in the phase of the wave to a peak portion. In addition, a pair of upper and lower incisions are formed by pushing in a state of being arranged substantially in parallel with the sheet so that each of the valley portions are in opposition to each other. A method for producing a sheet tearing structure, characterized in that discontinuous portions that do not form cut portions are arranged and formed at the bottom points of the valley portions of the portions.
JP2004222975A 2004-07-30 2004-07-30 Sheet tearing structure and production method for the same Pending JP2006036340A (en)

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JP2008087772A (en) * 2006-09-29 2008-04-17 Toppan Printing Co Ltd Strip-like unsealing structure, and paper-made box or corrugated fiberboard-made box provided with the same
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JP2017039550A (en) * 2016-10-12 2017-02-23 東洋アルミエコープロダクツ株式会社 Perforation structure and packaging container with lid using the same

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