JP6292662B2 - Break opening ruled line and ruled blade with a break opening ruled line - Google Patents

Break opening ruled line and ruled blade with a break opening ruled line Download PDF

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JP6292662B2
JP6292662B2 JP2013255954A JP2013255954A JP6292662B2 JP 6292662 B2 JP6292662 B2 JP 6292662B2 JP 2013255954 A JP2013255954 A JP 2013255954A JP 2013255954 A JP2013255954 A JP 2013255954A JP 6292662 B2 JP6292662 B2 JP 6292662B2
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ruled line
blade
break
attached
ruled
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JP2015113142A (en
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橋本　忠
忠 橋本
橋本　久司
久司 橋本
未来 橋本
未来 橋本
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FUTURE LABO CO., LTD.
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Description

この発明は、例えば、食品、医薬品、化粧品等々において、液状、ペースト状、粉末状、顆粒状、錠剤状等の内容物を、該内容物が収容された包装体の一部を破断開封して取り出すことができる破断開封罫線、及び破断開封罫線を付設する罫線付設刃に関する。   For example, in foods, pharmaceuticals, cosmetics, etc., the contents of liquid, paste, powder, granules, tablets, etc. are opened by breaking a part of the package containing the contents. The present invention relates to a break open ruled line that can be taken out, and a ruled line-attached blade that attaches a break open ruled line.

近年、上述の包装体としては、罫線付きプラスチックシートで構成される箱形態の包装体がある。該包装体は、プラスチックシートを、予め付設した罫線に沿って折り曲げることで、箱形態に組み立てることができるが、一般的な罫線付きプラスチックシートは、折り曲げ可能な罫線をプラスチックシートの片面のみに付設しているので、プラスチックシートを罫線が内側となるように折り曲げようとしても、該罫線における幅方向の角部が互いに当接して折り曲げを妨げるため、所定の箱形態に組み立てることが困難である。   In recent years, as the above-described package, there is a box-shaped package formed of a plastic sheet with ruled lines. The package can be assembled into a box shape by folding a plastic sheet along a pre-arranged ruled line, but a general ruled plastic sheet is provided with a foldable ruled line only on one side of the plastic sheet. Therefore, even if the plastic sheet is bent so that the ruled line is inside, the corners in the width direction of the ruled line are in contact with each other to prevent the bending, and it is difficult to assemble the plastic sheet into a predetermined box shape.

そこで、上述の課題を解決するため、折り曲げ可能な罫線を、プラスチックシートにおける折り曲げ部の上下両面に付設した罫線入りプラスチックシートが提案されている（特許文献１参照）。
しかし、上述の罫線を、罫線付設刃を用いてプラスチックシートの上下両面に対してより深く付設すれば、該上下罫線の間に形成される破断部の肉厚が薄くなり、折り曲げ性がより向上する。ところが、罫線付設刃を肉厚が薄いプラスチックシートの上下両面に打ち込んで付設するので、プラスチックシートに対する罫線付設刃の打ち込み深さ、及び罫線の付設深さを一定に保つことが困難であり、破断部の肉厚が変化しやすいため、プラスチックシートの折り曲げ性が不安定である。 In order to solve the above-described problem, a plastic sheet with ruled lines in which foldable ruled lines are provided on both upper and lower surfaces of a bent portion of the plastic sheet has been proposed (see Patent Document 1).
However, if the above-mentioned ruled lines are provided deeper with respect to the upper and lower surfaces of the plastic sheet using the ruled blades, the thickness of the fractured portion formed between the upper and lower ruled lines is reduced and the bendability is further improved. To do. However, since the blade with ruled lines is attached by being driven on both the upper and lower surfaces of a thin plastic sheet, it is difficult to keep the depth of the ruled blade with respect to the plastic sheet and the depth of the ruled lines to be fixed, and breakage is caused. Since the thickness of the part is easily changed, the bendability of the plastic sheet is unstable.

例えば、破断部を破断して開口するような包装構造の場合、罫線の付設深さが深過ぎると、破断部の肉厚が薄くなるので、プラスチックシートを罫線に沿って折り曲げた際、破断部が必要以上に破断し過ぎるおそれがある。一方、罫線の付設深さが浅過ぎると、連結部の肉厚が厚くなるので、プラスチックシートを罫線に沿って強い力で折り曲げなければ、破断部が破断されず、破断ミスが多発しやすくなる。   For example, in the case of a packaging structure that breaks and opens the broken part, if the ruled line is too deep, the thickness of the broken part becomes thin, so when the plastic sheet is folded along the ruled line, the broken part May break more than necessary. On the other hand, if the depth of the ruled line is too shallow, the thickness of the connecting part will increase, so if the plastic sheet is not bent along the ruled line with a strong force, the broken part will not be broken, and mistakes will likely occur frequently. .

特開平６−１０００１５号公報JP-A-6-100015

この発明は、折り曲げ性が良好であるうえ、折り曲げ及び破断が安定して行える破断開封罫線、及び破断開封罫線を付設する罫線付設刃を提供することを目的とする。   An object of the present invention is to provide a break opening ruled line which has good bendability and can bend and break stably, and a ruled blade with a break opening ruled line.

この発明は、罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、前記破断開封罫線を、前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、前記第１破断開封罫線、及び前記第２破断開封罫線を、前記所定角度で傾斜し相互に対峙する一対の側面部と、該側面部の一端側を接続する鋭角な底部とで構成し、前記破断部を、前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向に近接した底部の間、又は前記長手方向と交差する幅方向にずらして対峙させた側面部の間に設けた破断開封罫線であることを特徴とする。 The present invention is a concave break open ruled line having a pair of side faces inclined at a predetermined angle attached to the ruled line attaching part and facing each other, the break open ruled line facing the thickness direction of the ruled line attached part. A first break opening ruled line attached to one surface of the ruled line attaching portion and a second break opening ruled line attached to the other surface, the first break opening ruled line and the second break the opposed portion of the opening border, provided with a rupture portion which can be broken by bending the bending direction of the ruled line-attachment portion, the first rupture unsealing borders, and the second breaking open borders, mutually inclined at a predetermined angle It comprises a pair of side parts facing each other and an acute bottom part connecting one end side of the side parts, and the breaking part is close to the thickness direction of the first breaking opening ruled line and the second breaking opening ruled line Between the bottoms or the length Characterized in that it is a broken open borders provided between the side surface portion is facing shifted in the width direction crossing the direction.

ここで、上記罫線付設部は、例えば、アモルファスポリエチレンテレフタレート（Ａ−ＰＥＴ）、ポリプロピレン（ＰＰ）、生分解性プラスチック（ＰＬＡ）、ポリエチレン（ＰＥ）、ポリカーボネート（ＰＣ）、ポリビニルアルコール（ＰＶＡ）、ポリスチレン（ＰＳ）、あるいは、アルミニウムなどの金属シート等の単体又は複合したシート、プレートで構成することができる。   Here, the ruled part is, for example, amorphous polyethylene terephthalate (A-PET), polypropylene (PP), biodegradable plastic (PLA), polyethylene (PE), polycarbonate (PC), polyvinyl alcohol (PVA), polystyrene. (PS), or a single or composite sheet or plate such as a metal sheet such as aluminum can be used.

また、破断開封罫線を付設した罫線付設部は、例えば、１回の使用に必要な量の内容物を収容した小型の包装体、あるいは、液体洗剤用包装体や洗髪液用包装体などの容量が大きい大型の包装体等における開口部に設けることができる。   In addition, the ruled line-attached part provided with the break open ruled line is, for example, a small package containing the amount of contents necessary for one use, or a capacity of a package for liquid detergent, a package for hair washing liquid, etc. Can be provided in the opening of a large package or the like having a large size.

また、罫線付設刃は、例えば、波刃全体が、該波刃の長手方向に亘って刃厚方向に波打つ形状の波刃、あるいは、波刃の刃先のみが、該波刃の刃厚内において長手方向に亘って刃厚方向に波打つ形状の波刃等で構成することができる。   In addition, the ruled blade is, for example, a wave blade having a shape in which the entire wave blade undulates in the blade thickness direction over the longitudinal direction of the wave blade, or only the blade edge of the wave blade is within the blade thickness of the wave blade. It can be constituted by a wave blade having a shape that undulates in the blade thickness direction over the longitudinal direction.

この発明によれば、罫線付設部の折り曲げ性が良好であるうえ、折り曲げ及び破断が安定して行える。
詳述すると、第１破断開封罫線と第２破断開封罫線の対峙部分に形成した破断部の肉厚が、破断開封罫線の長手方向に亘って一定しているので、罫線付設部を破断開封罫線に沿って一定の折り曲げ力にて折り曲げることができる。 According to the present invention, the bendability of the ruled line-attached portion is good, and the folding and breaking can be performed stably.
More specifically, since the thickness of the rupture portion formed at the opposite portion of the first rupture opening crease line and the second rupture opening crease line is constant over the longitudinal direction of the rupture opening crease line, the crease opening portion is set to the rupture opening crease line. Can be bent with a constant bending force.

また、罫線付設部を折曲げ方向へ折り曲げる際に付与される引っ張り力によって、破断部を伸び切るようにして、一定の折り曲げ力にて容易に破断することができる。
この結果、罫線付設部の折り曲げ性が良好であるうえ、折り曲げ及び破断が一定の折り曲げ力にて安定して行える。 Further, the rupture portion can be extended by the pulling force applied when the ruled line-attached portion is bent in the bending direction, and can be easily broken with a constant bending force.
As a result, the bendable portion has good bendability, and the folding and breaking can be performed stably with a constant bending force.

さらに、罫線付設部の折り曲げ性がより良好となるうえ、折り曲げ及び破断がより安定して行える。
詳述すると、破断部を、第１破断開封罫線、及び第２破断開封罫線における厚み方向に近接した底部の間に設けることにより、底部が対向する範囲において破断部の肉厚を一定に保つことができる。 Furthermore, the bendability of the part with the ruled lines is improved, and the folding and breaking can be performed more stably.
Specifically, by providing the break portion between the first break opening ruled line and the bottom portion adjacent to the thickness direction of the second break open ruled line, the thickness of the break portion is kept constant in the range where the bottom portions oppose each other. Can do.

また、破断部を、第１破断開封罫線、及び第２破断開封罫線における幅方向に近接した側面部の間に設けることにより、破断開封罫線の付設深さが深過ぎたり、浅過ぎる等しても、側面部の間に設けた破断部の肉厚は変化することがなく、破断部の肉厚を、側面部が対向する範囲において一定の肉厚に保つことができる。
これにより、罫線付設部を折り曲げる際、及び破断部を破断する際に付与する折り曲げ力を一定に保つことができる。 In addition, by providing the break portion between the first break opening ruled line and the side portion close to the width direction in the second break open ruled line, the attachment depth of the break opening ruled line is too deep or too shallow. However, the thickness of the fracture portion provided between the side surface portions does not change, and the thickness of the fracture portion can be kept constant within a range where the side surface portions face each other.
Thereby, when bending a ruled line attaching part and when breaking a fracture | rupture part, the bending force provided can be kept constant.

また、この発明は罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、前記破断開封罫線を、前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、前記第２破断開封罫線を、前記第１破断開封罫線における一対の側面部に近接して該第１破断開封罫線の前記幅方向両側部に配置し、前記破断部を、前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向、及び幅方向に近接した側面部の間に設けた破断開封罫線であることを特徴とする。 Further, the present invention is a concave breaking opening ruled line having a pair of side faces inclined at a predetermined angle and attached to the ruled line attaching part, and the breaking open ruled line is arranged in the thickness direction of the ruled line attaching part. A first break opening ruled line attached to one side of the ruled line attaching portion and a second break open ruled line attached to the other side, and the first break open ruled line and the second the facing portion of the rupture unsealing borders, said by folding borders attachment portion of the bent direction includes a breakable portion capable of breaking, the second rupture unsealing borders, in proximity to the pair of side surface portions of the first rupture unsealing borders It arrange | positions in the said width direction both sides of this 1st breaking opening ruled line, The said breaking part is between the said thickness direction in the said 1st breaking opening ruled line, and the said 2nd breaking opening ruled line, and the side part adjacent to the width direction. in breaking open borders provided in the And wherein the Rukoto.

この発明によれば特に、罫線付設部の折り曲げ性がより向上するうえ、折り曲げ及び破断がより安定して行える。
詳述すると、破断部を、第１破断開封罫線、及び第２破断開封罫線における厚み方向、及び幅方向に近接した側面部の間に設けることにより、破断開封罫線の付設深さが深過ぎたり、浅過ぎる等しても、側面部の間に設けた破断部の肉厚は変化することがなく、破断部の肉厚を、側面部が対向する範囲において一定の肉厚に保つことができる。 According to the present invention, in particular , the bendability of the ruled line-attached portion is further improved, and the folding and breaking can be performed more stably.
More specifically, by providing the break portion between the first break opening ruled line and the side portions close to the thickness direction and the width direction in the second break open ruled line, the attachment depth of the break opening ruled line is too deep. Even if it is too shallow, the thickness of the rupture portion provided between the side portions does not change, and the thickness of the rupture portion can be kept constant in the range where the side portions oppose each other. .

これにより、罫線付設部を折り曲げる際、及び破断部を破断する際に付与する折り曲げ力を一定に保つことができるうえ、破断部を１箇所設けるのに比べて、破断部を複数箇所設ける方が、罫線付設部を折り曲げる際の折曲げ抵抗がより弱くなり、より折り曲げ及び破断し易くすることができる。   This makes it possible to keep the bending force applied when the ruled line-attached portion is bent and when the broken portion is broken, and to provide a plurality of broken portions as compared to providing one broken portion. The bending resistance at the time of folding the ruled line-attached portion becomes weaker and can be more easily bent and broken.

さらにこの発明は、罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、前記破断開封罫線を、前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、前記第１破断開封罫線、及び前記第２破断開封罫線を、前記所定角度で傾斜し相互に対峙する一対の側面部と、該側面部の一端側と連続する幅狭の底面部とで構成し、前記破断部を、前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向に近接した底面部の間に設けた破断開封罫線であることを特徴とする。 Furthermore, the present invention is a concave break open ruled line having a pair of side faces inclined at a predetermined angle and attached to the ruled line attaching part, the break open ruled line in the thickness direction of the ruled line attached part. A first break opening ruled line attached to one side of the ruled line attaching portion and a second break open ruled line attached to the other side, and the first break open ruled line and the second the facing portion of the rupture unsealing borders, with the breaking portion breakable by bending the bending direction of the ruled line-attachment portion, the first rupture unsealing borders, and the second breaking open borders, mutual inclined at the predetermined angle A pair of side surfaces facing each other and a narrow bottom surface continuous with one end of the side surface, and the breaking portion has the thickness at the first breaking opening ruled line and the second breaking opening ruled line. Between the bottoms close to the direction And wherein the digit is a cutaway opening borders.

この発明によれば特に、罫線付設部の折り曲げ性がより向上するうえ、折り曲げ及び破断がより安定して行える。
詳述すると、破断部を、第１破断開封罫線、及び第２破断開封罫線における厚み方向に近接した底面部の間に設けることにより、底面部が対向する範囲において破断部の肉厚を一定に保つことができる。
これにより、罫線付設部を折り曲げる際、及び破断部を破断する際に付与する折り曲げ力を一定に保つことができる。 According to the present invention, in particular, the bendability of the ruled line-attached portion is further improved, and the folding and breaking can be performed more stably.
More specifically, by providing the breakage portion between the bottom portion adjacent to the thickness direction of the first break opening ruled line and the second break opening ruled line, the thickness of the breakage portion is made constant in the range where the bottom portion faces each other. Can keep.
Thereby, when bending a ruled line attaching part and when breaking a fracture | rupture part, the bending force provided can be kept constant.

この発明の態様として、前記第１破断開封罫線、及び前記第２破断開封罫線が、該破断開封罫線の長手方向に亘って該長手方向と交差する幅方向、及び前記罫線付設部の厚み方向のうち少なくとも一方に波打つ形状を備えることができる。   As an aspect of the present invention, the first breaking opening ruled line and the second breaking opening ruled line are in the width direction intersecting the longitudinal direction over the longitudinal direction of the breaking opening ruled line, and in the thickness direction of the ruled line attaching portion. At least one of them can have a undulating shape.

この発明によれば、良好な破断性が得られるうえ、折り曲げ及び破断を平均的な折り曲げ力にて行うことができる。
詳述すると、罫線付設部の長手方向に亘って幅方向、厚み方向のうち少なくとも一方に波打つ形状の第１破断開封罫線、及び第２破断開封罫線を付設することにより、罫線付設時において、破断部の肉厚に若干振れが生じても、破断部を折り曲げ及び破断が許容される範囲の肉厚に保つことができる。 According to the present invention, good breakability can be obtained, and folding and breaking can be performed with an average bending force.
Specifically, the first break opening ruled line and the second break opening ruled line having a wave shape are attached to at least one of the width direction and the thickness direction over the longitudinal direction of the ruled line attached portion, thereby breaking at the time of ruled line setting. Even if the thickness of the portion slightly fluctuates, the fractured portion can be kept at a thickness that allows bending and fracture.

しかも、破断部の肉厚を略一定に保つことができるので、破断開封罫線を直線的に付設するよりも、良好な破断性が得られるうえ、折り曲げ及び破断する際に付与する力が平均的となるため、例えば、身障者や老人、子供等の折曲げ力が弱い人であっても、折り曲げ及び破断が安定して行える。   Moreover, since the thickness of the rupture portion can be kept substantially constant, better rupture properties can be obtained than when the rupture opening ruled line is attached linearly, and the force applied when bending and breaking is average. Therefore, for example, even a person with weak bending force such as a disabled person, an elderly person, or a child can bend and break stably.

また、この発明は、凹状の破断開封罫線を罫線付設部に付設する際に用いられ、所定角度で傾斜し相互に対峙する一対の側面部を有する罫線付設刃であって、前記罫線付設刃を、前記罫線付設部における厚み方向に対峙して配置され、該罫線付設部における一方の面に第１破断開封罫線を付設する第１罫線付設刃と、他方の面に第２破断開封罫線を付設する第２罫線付設刃とで構成し、前記第１罫線付設刃、及び前記第２罫線付設刃の対峙する刃先が、前記罫線付設部における前記第１罫線付設刃、及び前記第２罫線付設刃の刃先が対峙する部分に、前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部が形成される形状を備え、前記第１罫線付設刃、及び前記第２罫線付設刃における一方の罫線付設刃が、他方の罫線付設刃における一対の側面部と対峙する刃先形状を備え、該一方の罫線付設刃における刃先が、該罫線付設刃における幅方向内側の側面部が、他方の罫線付設刃における一対の側面部に対して所定間隔に近接される刃先形状を備えた
破断開封罫線を付設する罫線付設刃であることを特徴とする。 Further, the present invention is a ruled lined blade having a pair of side surfaces inclined at a predetermined angle and opposed to each other, which is used when a concave break-opening ruled line is attached to the ruled line provided part. The first ruled line-attached blade that is arranged opposite to the thickness direction of the ruled line-attached portion and that attaches the first break-opened ruled line to one surface of the ruled-line-attached portion, and the second break-opened ruled line is attached to the other surface. The first ruled line-equipped blade, and the blade edge facing the first ruled line-equipped blade, the first ruled line-equipped blade and the second ruled line-equipped blade in the ruled line-equipped portion. the portion cutting of faces, provided with a shape which breaks breakable are formed by bending the bending direction of the ruled line-attachment portion, the first ruled line attached blade, and one ruled line in the second ruled line attached blades The attached blade is connected to the other ruled blade. The blade edge of the one blade with ruled line is in a predetermined shape with respect to the pair of side surfaces of the blade with ruled line, and the side part on the inner side in the width direction of the blade with ruled line It is a ruled line-attached blade for attaching a break opening ruled line having a cutting edge shape close to the interval.

この発明によれば、罫線付設部の折り曲げ性が良好であるうえ、折り曲げ及び破断が安定して行える破断開封罫線を付設することができる。
詳述すると、罫線付設刃の第１罫線付設刃と第２罫線付設刃を、罫線付設部における上下両面に厚み方向に対峙して、第１破断開封罫線、及び第２破断開封罫線を、罫線付設部における上下両面に付設するとともに、第１罫線付設刃、及び第２罫線付設刃の刃先が対峙する部分に、破断開封罫線の長手方向に亘って肉厚が一定し、罫線付設部の折り曲げにより破断可能な破断部を形成する。 According to the present invention, it is possible to provide a break opening ruled line that can bend and break stably while the bendability of the ruled line attaching portion is good.
More specifically, the first and second crease opening blades of the crease line attachment blade are opposed to each other in the thickness direction on both the upper and lower surfaces of the crease line attachment portion. Attached to both the upper and lower surfaces of the attachment part, the thickness of the first ruled line attachment blade and the edge of the second ruled line attachment blade is opposite to each other, and the wall thickness is constant over the longitudinal direction of the break open ruled line. To form a breakable portion.

この結果、罫線付設部の折り曲げ性が良好であるうえ、折り曲げ及び破断が一定の折り曲げ力にて安定して行える破断開封罫線を付設することができる。   As a result, it is possible to attach a break open ruled line that can bend and break stably with a constant bending force, as well as having good bendability of the ruled line attaching portion.

特に、第１罫線付設刃、及び第２罫線付設刃を用いて、第１破断開封罫線、及び第２破断開封罫線を罫線付設部に付設することにより、第１破断開封罫線、及び第２破断開封罫線における厚み方向、及び幅方向に近接した側面部の間に、側面部が対向する範囲において一定の肉厚を有する複数の破断部を形成することができる。 In particular , the first break opening ruled line and the second break open ruled line are attached to the ruled line attaching part by using the first ruled line provided blade and the second ruled line provided blade, so that the first break opened ruled line and the second break A plurality of fracture portions having a certain thickness can be formed between the side surfaces close to each other in the thickness direction and the width direction in the opening ruled line in a range where the side surfaces are opposed to each other.

これにより、罫線付設部を折り曲げる際、及び破断部を破断する際に付与する折り曲げ力を一定に保つことができるうえ、折り曲げ及び破断が、より小さい折り曲げ力にて行える破断開封罫線を付設することができる。   This makes it possible to keep the bending force applied when the ruled line-attached portion is bent and when the fractured portion is broken, and to provide a break opening ruled line that can be folded and broken with a smaller bending force. Can do.

この発明の態様として、前記第１罫線付設刃、及び前記第２罫線付設刃の刃先が、該罫線付設刃の長手方向に亘って該長手方向と交差する幅方向、及び前記罫線付設部の厚み方向のうち少なくとも一方に波打つ形状を備える。   As an aspect of the present invention, the blade edge of the first ruled line-attached blade and the second ruled line-attached blade have a width direction intersecting the longitudinal direction over the longitudinal direction of the ruled line-attached blade, and the thickness of the ruled line-attached portion. A wave shape is provided in at least one of the directions.

この発明によれば、折り曲げ及び破断が容易に行える波形の破断開封罫線を付設することができる。
詳述すると、波形の第１罫線付設刃、及び第２罫線付設刃を用いて、罫線付設刃の長手方向に亘って幅方向、厚み方向のうち少なくとも一方に波打つ形状の第１破断開封罫線、及び第２破断開封罫線を付設することにより、罫線付設時において、破断部の肉厚に若干振れが生じても、折り曲げ及び破断が許容される範囲の肉厚に保つことができる。 According to the present invention, a corrugated break opening ruled line that can be easily folded and broken can be provided.
More specifically, using a corrugated first ruled blade and a second ruled blade, the first break opening ruled line wavy in at least one of the width direction and the thickness direction over the longitudinal direction of the ruled blade, In addition, by attaching the second break opening ruled line, even when the ruled line is attached, even if the thickness of the fractured portion is slightly shaken, the thickness can be maintained within a range where bending and breaking are allowed.

しかも、破断部の肉厚を略一定に保つことができるので、破断開封罫線を直線的に付設するよりも、良好な破断性が得られるうえ、折り曲げ及び破断が安定して行える破断開封罫線を付設することができる。   In addition, since the thickness of the fractured portion can be kept substantially constant, it is possible to obtain a fractured opening ruled line that can obtain better breaking properties and can bend and break more stably than the linear arrangement of the fractured opening ruled line. Can be attached.

この発明によれば、罫線付設部を、破断開封罫線に沿って折曲げ方向へ容易に折り曲げることができるうえ、該破断開封罫線の破断開封が容易に行える破断開封罫線、及び破断開封罫線を付設する罫線付設刃を提供することができる。   According to the present invention, the ruled line attaching portion can be easily folded in the folding direction along the break open ruled line, and the break open ruled line and the break open ruled line can be easily provided. It is possible to provide a ruled blade.

実施例１の破断開封罫線、及び罫線付設刃の部分拡大斜視図。The fracture | rupture opening ruled line of Example 1, and the partial expansion perspective view of a ruled line attachment blade. プラスチックシートに付設した破断開封罫線の部分拡大平面図。The fragmentary enlarged plan view of the breaking opening ruled line attached to the plastic sheet. 図２の破断部に沿って分断した破断開封罫線の断面図。Sectional drawing of the fracture | rupture opening ruled line parted along the fracture | rupture part of FIG. 刃先から見た罫線付設刃の部分拡大平面図。The partial enlarged plan view of the ruled line installation blade seen from the blade edge. 実施例２の破断開封罫線、及び罫線付設刃の部分拡大斜視図。The fracture | rupture opening ruled line of Example 2, and the partial expansion perspective view of a ruled line attachment blade. 実施例３の破断開封罫線、及び罫線付設刃の部分拡大斜視図。The fracture | rupture opening ruled line of Example 3, and the partial expansion perspective view of a ruled line attachment blade. 実施例４の破断開封罫線、及び罫線付設刃の部分拡大斜視図。The fracture | rupture opening ruled line of Example 4, and the partial expansion perspective view of an installation blade with a ruled line. 図７の破断開封罫線、及び罫線付設刃の他の例を示す部分拡大斜視図。The partial expansion perspective view which shows the other example of the breaking opening ruled line of FIG. 7, and an installation blade with a ruled line. 実施例５の破断開封罫線、及び罫線付設刃の部分拡大斜視図。The fracture | rupture opening ruled line of Example 5, and the partial expansion perspective view of a ruled line attachment blade. 破断開封罫線、及び罫線付設刃の他の波打ち形状の説明図。Explanatory drawing of the other undulation shape of a breaking opening ruled line and an installation blade with a ruled line. 直線溝形状の破断開封罫線を付設した他の例の拡大斜視図。The expansion perspective view of the other example which attached the breaking opening ruled line of the linear groove shape. 直線溝形状の破断開封罫線を付設したその他の例の拡大斜視図。The expansion perspective view of the other example which attached the breaking opening ruled line of the linear groove shape.

この発明の一実施形態を以下図面に基づいて詳述する。
（実施例１）
実施例１におけるプラスチックシート１０の折り曲げ部Ｆに付設した波溝形の破断開封罫線２１と、該破断開封罫線２１を付設する際に用いられる波刃形の罫線付設刃３１について説明する。
図１は実施例１の破断開封罫線２１、及び罫線付設刃３１の部分拡大斜視図、図２はプラスチックシート１０に付設した破断開封罫線２１の部分拡大平面図、図３は図２の破断部２１３に沿って分断した破断開封罫線２１の断面図、図４は刃先から見た罫線付設刃３１の部分拡大平面図である。 An embodiment of the present invention will be described in detail with reference to the drawings.
Example 1
The corrugated break open ruled line 21 attached to the bent portion F of the plastic sheet 10 in Example 1 and the corrugated ruled blade 31 used for attaching the break open ruled line 21 will be described.
FIG. 1 is a partially enlarged perspective view of a break open ruled line 21 and a ruled blade 31 provided in Example 1, FIG. 2 is a partially enlarged plan view of a break open ruled line 21 attached to a plastic sheet 10, and FIG. 3 is a broken part of FIG. FIG. 4 is a partially enlarged plan view of the blade 31 with ruled lines as viewed from the blade tip.

実施例１の破断開封罫線２１は、罫線付設部の一例としてプラスチックシート１０における折り曲げ部Ｆの上面に付設した断面略Ｖ字形を有する波溝形の第１破断開封罫線２１Ａと、該折り曲げ部Ｆの下面に付設した断面略Ｖ字形を有する波溝形の第２破断開封罫線２１Ｂで構成している（図１参照）。
第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂは、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、波溝形を有する罫線の山部と谷部が互いに一致するように付設している（図２参照）。 The break open ruled line 21 of the first embodiment includes a corrugated first break open ruled line 21A having a substantially V-shaped cross section provided on the upper surface of the bent part F of the plastic sheet 10 as an example of the ruled line attaching part, and the bent part F. It is comprised by the corrugated 2nd breaking opening ruled line 21B which has a substantially V-shaped cross section attached to the lower surface (refer FIG. 1).
The first break opening ruled line 21A and the second break open ruled line 21B are opposed to each other in the thickness direction T on both the upper and lower surfaces of the bent part F in the plastic sheet 10, and the crests and troughs of the ruled line having the wavy groove shape coincide with each other. (See FIG. 2).

プラスチックシート１０は、折り曲げ可能な硬さ及び厚み（０．２５ｍｍ〜０．５ｍｍの範囲に含まれる厚み）を有するアモルファスポリエチレンテレフタレート（Ａ−ＰＥＴ）で構成している。折り曲げ部Ｆは、プラスチックシート１０における幅方向Ｗ中央部に設定している。   The plastic sheet 10 is made of amorphous polyethylene terephthalate (A-PET) having a foldable hardness and thickness (thickness included in a range of 0.25 mm to 0.5 mm). The bent portion F is set at the central portion in the width direction W of the plastic sheet 10.

第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂは、所定角度で傾斜し相互に対峙する一対の側面部２１１と、該側面部２１１の一端側を接続する底部２１２で構成するとともに、長手方向Ｌの一端側から見て断面略Ｖ字形を有する凹状の溝に形成している。   The first breaking opening ruled line 21A and the second breaking opening ruled line 21B are composed of a pair of side surfaces 211 that are inclined at a predetermined angle and face each other, and a bottom portion 212 that connects one end sides of the side surfaces 211, and are long. A concave groove having a substantially V-shaped cross section as viewed from one end side in the direction L is formed.

一対の側面部２１１は、該破断開封罫線２１Ａ，２１Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底部２１２は、該破断開封罫線２１Ａ，２１Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している（図２、図３参照）。   The pair of side surface portions 211 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the break open ruled lines 21A and 21B. The bottom portion 212 is formed in a shape that undulates in the width direction W and the thickness direction T along the longitudinal direction L of the break open ruled lines 21A and 21B (see FIGS. 2 and 3).

第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける厚み方向Ｔに近接した底部２１２の間には、肉厚Ｃ１が長手方向Ｌに亘って一定するとともに、プラスチックシート１０の折曲げ方向の折り曲げにより破断可能な破断部２１３を形成している。
破断部２１３の肉厚Ｃ１は、プラスチックシート１０の肉厚Ｄ以下の厚みとなるように設定している。肉厚Ｃ１は、肉厚Ｄの５％〜６０％の範囲に含まれる間隔に設定するのが望ましい。 Between the bottom portion 212 adjacent to the thickness direction T in the first break opening ruled line 21A and the second break opening ruled line 21B, the thickness C1 is constant in the longitudinal direction L and the plastic sheet 10 is bent in the folding direction. A breakable portion 213 that can be broken by bending is formed.
The thickness C1 of the fracture portion 213 is set so as to be equal to or less than the thickness D of the plastic sheet 10. The wall thickness C1 is desirably set to an interval included in the range of 5% to 60% of the wall thickness D.

上述の第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３１の第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、波溝形を有する罫線の山部と谷部が互いに一致するように付設する（図３参照）。   The first break open ruled line 21A and the second break open ruled line 21B are formed by the first ruled line-equipped blade 31A and the second ruled line-equipped blade 31B of the ruled line-attached blade 31 attached to a not-shown ruled line attaching apparatus. Are attached to the upper and lower surfaces of the bent portion F so that the crests and troughs of the ruled line having the corrugated shape coincide with each other (see FIG. 3).

つまり、第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂの刃先が対峙する部分に、破断開封罫線２１の長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状を有し、プラスチックシート１０の折り曲げにより破断可能な破断部２１３を形成する。   In other words, it has a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the breaking open ruled line 21 at the part where the blade edges of the first ruled line provided blade 31A and the second ruled line provided blade 31B face each other, A breakable portion 213 that can be broken by bending the plastic sheet 10 is formed.

一方、罫線付設刃３１は、第１破断開封罫線２１Ａの波溝形状と対応して断面略Ｖ字形を有する波刃形の第１罫線付設刃３１Ａと、第２破断開封罫線２１Ｂと対応して断面略Ｖ字形を有する波刃形の第２罫線付設刃３１Ｂで構成され、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して配置している（図１参照）。   On the other hand, the ruled lined blade 31 corresponds to the corrugated first ruled line blade 31A having a substantially V-shaped cross section corresponding to the corrugated shape of the first break open ruled line 21A, and the second break open ruled line 21B. It is composed of a wavy blade-shaped second ruled blade 31B having a substantially V-shaped cross section, and is disposed on both upper and lower surfaces of the bent portion F of the plastic sheet 10 so as to face each other in the thickness direction T (see FIG. 1).

第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂの刃先は、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂと対応して、所定角度で傾斜し相互に対峙する一対の側面部３１１と、該側面部３１の一端側を接続する底部３１２で構成している。   The cutting edges of the first ruled blade 31A and the second ruled blade 31B correspond to the first break open ruled line 21A and the second break open ruled line 21B, and a pair of side surfaces that are inclined at a predetermined angle and face each other. 311 and a bottom portion 312 that connects one end side of the side surface portion 31.

一対の側面部３１１は、該罫線付設刃３１Ａ，３１Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底部３１２は、該罫線付設刃３１Ａ，３１Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している。   The pair of side surface portions 311 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the ruled lined blades 31A and 31B. The bottom 312 is formed in a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the ruled blades 31A and 31B.

第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂにおいて厚み方向Ｔに近接される底部３１２間の間隔は、罫線付設時において、プラスチックシート１０の肉厚Ｄ以下、具体的には肉厚Ｃ１と対応する間隔となるように設定している。   In the first ruled blade 31A and the second ruled blade 31B, the interval between the bottom portions 312 that are close to each other in the thickness direction T is equal to or less than the thickness D of the plastic sheet 10, specifically, the thickness C1. Is set to be the corresponding interval.

上述の第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける底部２１２の厚み方向Ｗに重なり合う部分の破断部２１３の寸法Ａは、プラスチックシート１０の肉厚Ｄを基準として、該肉厚Ｄの５％〜４５％の範囲に含まれる寸法に設定するのが望ましい。   The dimension A of the rupture portion 213 of the first rupture opening ruled line 21A and the second rupture opening crease line 21B that overlaps the thickness direction W of the bottom 212 is based on the thickness D of the plastic sheet 10. It is desirable to set the dimension within the range of 5% to 45%.

第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける厚み方向Ｔの深さＢは、上述の肉厚Ｄを基準として、該肉厚Ｄの１０％〜９０％の範囲に含まれる深さに設定するのが望ましい。
第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける厚み方向Ｔの食い込み角度θ１は、５度〜５０度の範囲に含まれる角度に設定するのが望ましい。 The depth B in the thickness direction T of the first break open ruled line 21A and the second break open ruled line 21B is a depth included in the range of 10% to 90% of the thickness D on the basis of the thickness D described above. It is desirable to set to.
The biting angle θ1 in the thickness direction T in the first break opening ruled line 21A and the second break opening ruled line 21B is preferably set to an angle included in the range of 5 degrees to 50 degrees.

第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける底部２１２の長手方向Ｌの高低差Ｈは、上述の肉厚Ｄを基準として、該肉厚Ｄの５％〜５０％の範囲に含まれる高低差Ｈに設定するのが望ましい（図３参照）。   The height difference H in the longitudinal direction L of the bottom portion 212 in the first break open ruled line 21A and the second break open ruled line 21B is included in the range of 5% to 50% of the thickness D based on the above thickness D. It is desirable to set the height difference H to be higher (see FIG. 3).

なお、上述の寸法Ａ、深さＢ、肉厚Ｃ１、角度θ１、高低差Ｈは、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂと対応して、第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂにも適用している。   The above-described dimension A, depth B, thickness C1, angle θ1, and height difference H correspond to the first breaking opening ruled line 21A and the second breaking opening ruled line 21B, and the first ruled blade 31A, This is also applied to the second ruled blade 31B.

第１罫線付設刃３１Ａの刃幅Ｎ１、及び第２罫線付設刃３１Ｂの刃幅Ｎ２は、図１の波刃における板厚ＴＤの５％〜１００％の範囲に含まれる幅に設定するのが望ましい。ここで、刃幅Ｎ２は、刃幅Ｎ１と同じである。
また、波刃のピッチＰは、前記板厚ＴＤの５０％〜３００％の範囲に含まれる長さに設定するのが望ましい（図４参照）。 The blade width N1 of the first ruled blade 31A and the blade width N2 of the second ruled blade 31B are set to a width included in the range of 5% to 100% of the plate thickness TD of the wave blade of FIG. desirable. Here, the blade width N2 is the same as the blade width N1.
Moreover, it is desirable to set the pitch P of the wave blade to a length included in the range of 50% to 300% of the plate thickness TD (see FIG. 4).

次に、上述した破断開封罫線２１の第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設した効果について説明する（図１参照）。   Next, the effect of attaching the first break opening ruled line 21A and the second break open ruled line 21B of the above-described break open ruled line 21 to the upper and lower surfaces of the bent portion F in the plastic sheet 10 will be described (see FIG. 1).

詳述すると、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂの対峙部分に形成した破断部２１３の肉厚Ｃ１を、底部２１２が対向する範囲において長手方向Ｌに亘って一定に保つことができる。   More specifically, the thickness C1 of the breaking portion 213 formed in the opposite portion of the first breaking opening ruled line 21A and the second breaking opening ruled line 21B is kept constant over the longitudinal direction L in the range where the bottom portion 212 faces. Can do.

これにより、プラスチックシート１０を破断開封罫線２１に沿って一定の折り曲げ力にて容易に折り曲げることができるとともに、プラスチックシート１０を折曲げ方向へ折り曲げる際に付与される引っ張り力によって、破断部２１３を伸び切るようにして、一定の折り曲げ力にて容易に破断することができる。
この結果、プラスチックシート１０の折り曲げ性が良好であるうえ、折り曲げ及び破断が一定の折り曲げ力にて安定して行える。 Thereby, the plastic sheet 10 can be easily folded with a constant folding force along the breaking opening ruled line 21, and the breaking portion 213 is formed by the tensile force applied when the plastic sheet 10 is folded in the folding direction. It can be easily broken with a constant bending force as it extends.
As a result, the plastic sheet 10 has good bendability and can be stably folded and broken with a constant bending force.

しかも、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける厚み方向Ｔに近接した底部２１２間の破断部２１３の肉厚Ｃ１を薄くすることができるうえ、該破断部２１３を、長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成することができる。   In addition, the thickness C1 of the break portion 213 between the bottom portions 212 adjacent to the thickness direction T in the first break opening ruled line 21A and the second break open ruled line 21B can be reduced, and the break portion 213 is formed in the longitudinal direction. It can be formed into a wave shape in the width direction W and the thickness direction T over L.

つまり、罫線付設時において、破断部２１３の肉厚Ｃ１に若干振れが生じても、破断部２１３を折り曲げ及び破断が許容される範囲の肉厚Ｃ１に保つことができる。
破断部２１３の肉厚Ｃ１を略一定に保つことができるので、破断開封罫線２１を直線的に付設するよりも、良好な破断性が得られるうえ、折り曲げ及び破断する際に付与する力が平均的となる。 That is, when the ruled line is provided, even if the thickness C1 of the fractured portion 213 slightly fluctuates, the fractured portion 213 can be maintained at the thickness C1 within a range where bending and fracture are allowed.
Since the thickness C1 of the rupture portion 213 can be kept substantially constant, a better rupture property can be obtained than when the rupture opening ruled line 21 is linearly attached, and the force applied when bending and rupturing is average. It becomes the target.

さらに、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂのうちいずれか一方の罫線を、プラスチックシート１０における折り曲げ部Ｆの片面のみに付設するよりも、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設する方が、折り曲げ部Ｆの剛性が他の部分に比べて弱くなり、折り曲げ易くすることができる。   Furthermore, the upper and lower sides of the folding part F in the plastic sheet 10 are arranged higher than the one of the first breaking opening ruled line 21 </ b> A and the second breaking opening ruled line 21 </ b> B only on one side of the folding part F in the plastic sheet 10. Attaching to both surfaces makes the bending portion F less rigid than other portions, and can be easily bent.

プラスチックシート１０における折り曲げ部Ｆの折り曲げを妨げようとする抵抗（剛性）が、他の部分に比べて弱いので、プラスチックシート１０を、折り曲げ部Ｆに付設した第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂに沿って折曲げ方向へ容易に折り曲げることができる。   Since the resistance (rigidity) of preventing the folding of the bent portion F in the plastic sheet 10 is weaker than that of other portions, the first break opening ruled line 21A attached to the bent portion F and the second It can be easily folded in the folding direction along the broken opening ruled line 21B.

さらにまた、第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂにおける底部２１２間を連設する破断部２１３の肉厚Ｃ１が薄いので、プラスチックシート１０を、折り曲げ部Ｆの第１破断開封罫線２１Ａ、及び第２破断開封罫線２１Ｂに沿って折曲げ方向へ折り曲げるだけで、底部２１２間を連設する破断部２１３を伸び切るようにして簡単に破断することができる。   Furthermore, since the thickness C1 of the breaking portion 213 connecting the bottom portions 212 of the first breaking opening ruled line 21A and the second breaking opening ruled line 21B is thin, the plastic sheet 10 is folded at the first breaking opening ruled line of the bent portion F. By simply folding in the folding direction along 21A and the second breaking opening ruled line 21B, the breaking portion 213 connecting the bottom portions 212 can be easily broken.

この結果、例えば、身障者や老人、子供等の折曲げ力が弱い人であっても、プラスチックシート１０の折り曲げが容易に行えるうえ、該プラスチックシート１０の破断開封罫線２１を簡単かつ容易に破断開封することができる。   As a result, for example, even a person with weak bending force such as a handicapped person, an elderly person, or a child can easily bend the plastic sheet 10 and easily and easily break and open the break opening ruled line 21 of the plastic sheet 10. can do.

さらにまた、破断開封罫線２１の破断部２１３を破断するまでは、該破断部２１３にて隔てられた隣り合う２つの空間部を互いに隔離した状態に保つことができるため、例えば、液状、ペースト状、粉末状、顆粒状、錠剤状等の等の内容物の漏洩を防止するのに必要なシール性を確保することができる。   Furthermore, the two adjacent space portions separated by the breaking portion 213 can be kept separated from each other until the breaking portion 213 of the breaking open ruled line 21 is broken. Further, it is possible to ensure the sealing performance necessary to prevent leakage of contents such as powder, granules, tablets and the like.

本実施例は、第１罫線付設刃３１Ａ、及び第２罫線付設刃３１Ｂの刃先が、長手方向Ｌに波刃で、幅方向Ｗ（刃の厚み方向）にも波刃であるから、第１罫線付設刃３１Ａの谷部に、第２罫線付設刃３１Ｂの山部が交差するので、非常に複雑な凹凸が生まれた破断開封罫線２１となり、破断し易い優れた罫線となる。   In the present embodiment, the cutting edges of the first ruled blade 31A and the second ruled blade 31B are wave blades in the longitudinal direction L and wave blades in the width direction W (blade thickness direction). Since the crest of the second ruled blade 31B intersects the valley of the ruled blade 31A, it becomes a break open ruled line 21 in which very complicated irregularities are created, and it becomes an excellent ruled line that is easy to break.

以下、上述の破断開封罫線、及び罫線付設刃におけるその他の例について説明する。この説明において、前記構成と同一または同等の部位については同一の符号を記してその詳しい説明を省略する。   Hereinafter, the other example in the above-mentioned fracture | rupture opening ruled line and a ruled line attachment blade is demonstrated. In this description, parts that are the same as or equivalent to those in the above configuration are denoted by the same reference numerals, and detailed description thereof is omitted.

（実施例２）
次に、実施例２におけるプラスチックシート１０の折り曲げ部Ｆに付設した波溝形の破断開封罫線２２と、該破断開封罫線２２を付設する際に用いられる波刃形の罫線付設刃３２について説明する。
図５は実施例２の破断開封罫線２２、及び罫線付設刃３２の部分拡大斜視図である。 (Example 2)
Next, the corrugated break open ruled line 22 attached to the bent portion F of the plastic sheet 10 in Example 2 and the corrugated ruled blade 32 used when attaching the break open ruled line 22 will be described. .
FIG. 5 is a partially enlarged perspective view of the break opening ruled line 22 and the ruled lined blade 32 of the second embodiment.

実施例２の破断開封罫線２２は、プラスチックシート１０における折り曲げ部Ｆの上面に付設した断面略Ｖ字形を有する波溝形の第１破断開封罫線２２Ａと、折り曲げ部Ｆの下面に付設した断面略Ｖ字形を有する波溝形の第２破断開封罫線２２Ｂとで構成している。   The break open ruled line 22 of the second embodiment includes a corrugated first break open ruled line 22A having a substantially V-shaped cross section attached to the upper surface of the bent portion F of the plastic sheet 10 and a cross section substantially attached to the lower surface of the bent portion F. It is comprised with the corrugated 2nd breaking opening ruled line 22B which has V shape.

第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂは、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、該破断開封罫線２２Ａ，２２Ｂにおける波溝の山部と谷部が互いに一致するように付設している（図５参照）。   The first breaking opening ruled line 22A and the second breaking opening ruled line 22B are opposed to the upper and lower surfaces of the bent part F in the plastic sheet 10 in the thickness direction T, and crests and troughs of the wave grooves in the breaking opening ruled lines 22A and 22B. The parts are attached so as to coincide with each other (see FIG. 5).

第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂは、所定角度で傾斜し相互に対峙する一対の側面部２２１と、該側面部２２１の一端側を接続する底部２２２で構成するとともに、長手方向Ｌの一端側から見て断面略Ｖ字形を有する凹状の溝に形成している。   The first breaking opening ruled line 22A and the second breaking opening ruled line 22B are composed of a pair of side surface portions 221 that are inclined at a predetermined angle and face each other, and a bottom portion 222 that connects one end sides of the side surface portions 221 and are long. A concave groove having a substantially V-shaped cross section as viewed from one end side in the direction L is formed.

一対の側面部２２１は、該破断開封罫線２２Ａ，２２Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底部２２２は、該破断開封罫線２２Ａ，２２Ｂの長手方向Ｌに亘って厚み方向Ｔに波打つ形状に形成している（図５参照）。   The pair of side surface portions 221 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the break open ruled lines 22A and 22B. The bottom part 222 is formed in a shape that undulates in the thickness direction T over the longitudinal direction L of the break open ruled lines 22A and 22B (see FIG. 5).

一対の側面部２２１のうち幅方向Ｗ内側に位置する一方の側面部２２１を、プラスチックシート１０の厚み方向Ｔと平行して垂直に形成し、他方の側面部２２１を厚み方向Ｔに対して角度θ２に傾斜している。   One side surface part 221 located inside the width direction W among the pair of side surface parts 221 is formed in parallel with the thickness direction T of the plastic sheet 10 and the other side surface part 221 is angled with respect to the thickness direction T. It is inclined to θ2.

第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける幅方向Ｗに近接した側面部２２１の間には、肉厚Ｃ２が長手方向Ｌに亘って一定するとともに、プラスチックシート１０の折曲げ方向の折り曲げにより破断可能な破断部２２３を形成している。
破断部２２３の肉厚Ｃ２は、プラスチックシート１０の肉厚Ｄ以下の厚みとなるように設定している。肉厚Ｃ２は、肉厚Ｄの５％〜６０％の範囲に含まれる間隔に設定するのが望ましい。 The thickness C2 is constant in the longitudinal direction L between the side surfaces 221 adjacent to the width direction W in the first breaking opening ruled line 22A and the second breaking opening ruled line 22B, and the folding direction of the plastic sheet 10 A breakable portion 223 that can be broken by bending is formed.
The thickness C2 of the fracture portion 223 is set to be a thickness equal to or less than the thickness D of the plastic sheet 10. The wall thickness C2 is desirably set to an interval included in the range of 5% to 60% of the wall thickness D.

これにより、第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂを、長手方向Ｌの一端側から見て断面略Ｖ字形を有する凹状の溝に形成するとともに、上述の肉厚Ｃ２と対応する間隔だけ幅方向Ｗにずらして付設している。   Thus, the first break opening ruled line 22A and the second break open ruled line 22B are formed in a concave groove having a substantially V-shaped cross section when viewed from one end side in the longitudinal direction L, and correspond to the above-described thickness C2. It is attached by being shifted in the width direction W by an interval.

上述の第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３２の第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して付設する。   The first break open ruled line 22A and the second break open ruled line 22B are formed by the first ruled line provided blade 32A and the second ruled line provided blade 32B of the ruled line attached blade 32 attached to the ruled line attaching apparatus (not shown) by the plastic sheet 10. Are attached to both the upper and lower surfaces of the bent portion F facing each other in the thickness direction T.

つまり、第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂの刃先が対峙する部分に、破断開封罫線２２の長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状を有し、プラスチックシート１０の折り曲げにより破断可能な破断部２２３を形成する。   That is, it has a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the fractured open ruled line 22 at the part where the cutting edges of the first ruled lined blade 32A and the second ruled lined blade 32B face each other, A breakable portion 223 that can be broken by bending the plastic sheet 10 is formed.

一方、罫線付設刃３２は、第１破断開封罫線２２Ａと対応して断面略Ｖ字形を有する波刃形の第１罫線付設刃３２Ａと、第２破断開封罫線２２Ｂと対応して断面略Ｖ字形を有する波刃形の第２罫線付設刃３２Ｂで構成している。
さらに、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して配置するとともに、上述の肉厚Ｃ２と対応する間隔だけ幅方向Ｗにずらして配置している（図５参照）。 On the other hand, the ruled line-equipped blade 32 has a corrugated first ruled line-attached blade 32A having a substantially V-shaped cross section corresponding to the first break-opened ruled line 22A and a substantially V-shaped cross-section corresponding to the second break-opened ruled line 22B. It is comprised with the waved blade-shaped 2nd ruled blade 32B which has.
Further, the plastic sheet 10 is disposed on both upper and lower surfaces of the bent portion F so as to face each other in the thickness direction T, and is shifted in the width direction W by an interval corresponding to the above-described thickness C2 (see FIG. 5).

第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂの刃先は、第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂと対応して、所定角度で傾斜し相互に対峙する一対の側面部３２１と、該側面部３２１の一端側を接続する底部３２２で構成している。   The cutting edges of the first ruled lined blade 32A and the second ruled lined blade 32B correspond to the first break open ruled line 22A and the second break open ruled line 22B, and a pair of side surfaces that are inclined at a predetermined angle and face each other. 321 and a bottom portion 322 connecting one end side of the side surface portion 321.

一対の側面部３２１は、該罫線付設刃３２Ａ，３２Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底部３２２は、該罫線付設刃３２Ａ，３２Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している。   The pair of side surface portions 321 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the ruled line provided blades 32A, 32B. The bottom 322 is formed in a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the ruled lined blades 32A and 32B.

一対の側面部３２１のうち幅方向Ｗ内側に位置する一方の側面部３２１を、プラスチックシート１０の厚み方向Ｔと平行して略垂直に形成し、他方の側面部３２１を厚み方向Ｔに対して角度θ２に傾斜している。   One side surface part 321 located inside the width direction W among the pair of side surface parts 321 is formed substantially perpendicular to the thickness direction T of the plastic sheet 10, and the other side surface part 321 is formed with respect to the thickness direction T. It is inclined at an angle θ2.

第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂにおいて幅方向Ｗに近接される側面部３２１間に間隔は、罫線付設時において、プラスチックシート１０の肉厚Ｄ以下、具体的には肉厚Ｃ２と対応する間隔となるように設定している。   In the first ruled lined blade 32A and the second ruled lined blade 32B, the interval between the side surface portions 321 adjacent to the width direction W is equal to or less than the thickness D of the plastic sheet 10 when the ruled line is provided. The interval corresponding to C2 is set.

上述の第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける側面部２２１の幅方向Ｗに重なり合う部分の破断部２２３の寸法Ａは、上述の肉厚Ｄを基準として、該肉厚Ｄの−３０％〜６０％の範囲に含まれる寸法に設定するのが望ましい。   The dimension A of the rupture portion 223 of the first rupture opening ruled line 22A and the second rupture opening crease line 22B that overlaps the width direction W of the side surface part 221 is determined based on the thickness D described above. It is desirable to set the dimension within the range of −30% to 60%.

第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける厚み方向Ｔの深さＢは、上述の肉厚Ｄを基準として、該肉厚Ｄの１０％〜９０％の範囲に含まれる深さに設定するのが望ましい。   The depth B in the thickness direction T of the first breaking opening ruled line 22A and the second breaking opening ruled line 22B is a depth included in the range of 10% to 90% of the thickness D on the basis of the thickness D described above. It is desirable to set to.

第１破断開封罫線２２Ａ、及び第２も破断開封罫線２２Ｂにおける厚み方向Ｔの食い込み角度θ２は、５度〜５０度の範囲に含まれる角度に設定するのが望ましい。
第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける底部２１２の高低差Ｈは、実施例１と同一であるので、その説明を省略する。 The biting angle θ2 in the thickness direction T of the first break opening ruled line 22A and the second break opening ruled line 22B is preferably set to an angle included in the range of 5 degrees to 50 degrees.
Since the height difference H of the bottom portion 212 in the first break open ruled line 22A and the second break open ruled line 22B is the same as that in the first embodiment, the description thereof is omitted.

なお、上述の寸法Ａ、深さＢ、肉厚Ｃ２、角度θ２、高低差Ｈは、第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂと対応して、第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂにも適用している。   The dimensions A, depth B, wall thickness C2, angle θ2, and height difference H described above correspond to the first breaking opening ruled line 22A and the second breaking opening ruled line 22B, and the first ruled blade 32A, This is also applied to the second ruled blade 32B.

次に、上述した破断開封罫線２２の第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設した効果について説明する（図５参照）。   Next, the effect obtained by attaching the first breaking opening ruled line 22A and the second breaking opening ruled line 22B of the breaking opening ruled line 22 to the upper and lower surfaces of the bent portion F in the plastic sheet 10 will be described (see FIG. 5).

詳述すると、破断部２２３を、第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける幅方向Ｗに近接した側面部２２１の間に設けることにより、破断開封罫線２２Ａ，２２Ｂの付設深さが深過ぎたり、浅過ぎる等しても、側面部２２１の間に設けた破断部２２３の肉厚Ｃ２は変化することがなく、破断部２２３の肉厚Ｃ２を、側面部２２１が対向する範囲において一定の肉厚Ｃ２に保つことができる。   More specifically, by providing the breaking portion 223 between the side surface portion 221 close to the width direction W in the first breaking opening ruled line 22A and the second breaking opening ruled line 22B, the attachment depth of the breaking opening ruled lines 22A and 22B is provided. Even if the depth is too deep or too shallow, the thickness C2 of the fractured portion 223 provided between the side surface portions 221 does not change, and the thickness C2 of the fractured portion 223 is within the range where the side surface portions 221 face each other. In this case, a constant thickness C2 can be maintained.

これにより、プラスチックシート１０の折り曲げ、及び破断部２２３の破断が一定の折り曲げ力にて行え、プラスチックシート１０の折り曲げ性がより良好となるうえ、折り曲げ及び破断がより安定して行える。   As a result, the plastic sheet 10 can be bent and the breaking portion 223 can be broken with a constant bending force, and the plastic sheet 10 can be bent better and can be bent and broken more stably.

しかも、第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂにおける幅方向Ｗに近接した側面部２２１間の破断部２２３の肉厚Ｃ２を薄くすることができるうえ、該破断部２２３を、長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成することができる。
この結果、実施例１と略同等あるいは同等以上の作用及び効果を奏することができる。 In addition, the thickness C2 of the breaking portion 223 between the side surface portions 221 adjacent to the width direction W in the first breaking opening ruled line 22B and the second breaking opening ruled line 22B can be reduced, and the breaking portion 223 It can be formed into a wave shape in the width direction W and the thickness direction T over the direction L.
As a result, operations and effects substantially equivalent to or greater than those of the first embodiment can be achieved.

（実施例３）
次に、実施例３におけるプラスチックシート１０の折り曲げ部Ｆに付設した波溝形の破断開封罫線２３と、該破断開封罫線２３を付設する際に用いられる波刃形の罫線付設刃３３について説明する。
図６は実施例３の破断開封罫線２３、及び罫線付設刃３３の部分拡大斜視図である。 (Example 3)
Next, the corrugated break open ruled line 23 attached to the bent portion F of the plastic sheet 10 in Example 3 and the corrugated blade with ruled line 33 used when attaching the break open ruled line 23 will be described. .
FIG. 6 is a partially enlarged perspective view of the break-opening ruled line 23 and the ruled-lined blade 33 according to the third embodiment.

実施例３の破断開封罫線２３は、プラスチックシート１０における折り曲げ部Ｆの上面に付設した断面略Ｖ字形を有する波溝形の第１破断開封罫線２３Ａと、該折り曲げ部Ｆの下面に付設した断面略Ｍ字形を有する波溝形の第２破断開封罫線２３Ｂで構成している。   The break open ruled line 23 of Example 3 includes a corrugated first break open ruled line 23 </ b> A having a substantially V-shaped cross section attached to the upper surface of the bent portion F of the plastic sheet 10, and a cross section attached to the lower surface of the bent portion F. It is constituted by a wavy groove-shaped second break opening ruled line 23B having a substantially M shape.

第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂは、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、波溝形を有する罫線の山部と谷部が互いに一致するように付設している（図６参照）。   The first break opening ruled line 23 </ b> A and the second break open ruled line 23 </ b> B are opposed to each other in the thickness direction T on the upper and lower surfaces of the bent part F of the plastic sheet 10, so (See FIG. 6).

第１破断開封罫線２３Ａは、所定角度で傾斜し相互に対峙する一対の側面部２３１と、該側面部２３１の一端側を接続する底部２３２で構成するとともに、長手方向Ｌの一端側から見て断面略Ｖ字形を有する凹状の溝に形成している。   The first break opening ruled line 23A is composed of a pair of side surfaces 231 inclined at a predetermined angle and facing each other, and a bottom 232 connecting one end side of the side surface portion 231, and viewed from one end side in the longitudinal direction L. It is formed in a concave groove having a substantially V-shaped cross section.

第２破断開封罫線２３Ｂは、所定角度で傾斜し相互に対峙する一対の側面部２３１と、該側面部２３１の一端側を接続する底部２３２で構成される断面略Ｖ字形の溝部を、第１破断開封罫線２３Ａの幅方向Ｗ両側部に配置して、長手方向Ｌの一端側から見て断面略Ｍ字形を有する凹状の溝に形成している。   The second break opening ruled line 23B is a first V-shaped groove section having a pair of side surfaces 231 inclined at a predetermined angle and facing each other, and a bottom portion 232 connecting one end side of the side surfaces 231. It is arranged on both sides in the width direction W of the break opening ruled line 23A, and is formed in a concave groove having a substantially M-shaped cross section when viewed from one end side in the longitudinal direction L.

第２破断開封罫線２３Ｂにおける幅方向Ｗ内側の側面部２３１は、第１破断開封罫線２３Ａにおける一対の側面部２３１に対して所定間隔（具体的には肉厚Ｃ３と対応する間隔）に近接している。   The side surface portion 231 on the inner side in the width direction W of the second break opening ruled line 23B is close to a pair of side surface portions 231 in the first break opening ruled line 23A (specifically, an interval corresponding to the thickness C3). ing.

一対の側面部２３１は、該破断開封罫線２３Ａ，２３Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底面部２３２は、該破断開封罫線２３Ａ，２３Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している（図６参照）。   The pair of side surface portions 231 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the breakage opening ruled lines 23A and 23B. The bottom surface portion 232 is formed in a shape that undulates in the width direction W and the thickness direction T along the longitudinal direction L of the break open ruled lines 23A and 23B (see FIG. 6).

第１破断開封罫線２３Ａの底部２３２を、第２破断開封罫線２３Ｂにおける底部２３２間に対して厚み方向Ｔに寸法Ａ分だけ入り込ませている。
第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける厚み方向Ｔ、及び幅方向Ｗに近接した側面部２３１の間には、肉厚Ｃ３が長手方向Ｌに亘って一定するとともに、プラスチックシート１０の折曲げ方向の折り曲げにより破断可能な破断部２３３を２箇所形成している。 The bottom portion 232 of the first break opening ruled line 23A is inserted in the thickness direction T by the dimension A with respect to the bottom portion 232 of the second break opening ruled line 23B.
Between the side surface portion 231 adjacent to the thickness direction T and the width direction W in the first breaking opening ruled line 23A and the second breaking opening ruled line 23B, the thickness C3 is constant in the longitudinal direction L, and the plastic sheet Two breaking portions 233 that can be broken by bending in the folding direction of 10 are formed.

破断部２３３の肉厚Ｃ３は、プラスチックシート１０の肉厚Ｄ以下の厚みとなるように設定している。肉厚Ｃ３は、肉厚Ｄの５％〜６０％の範囲に含まれる間隔に設定するのが望ましい。   The thickness C3 of the fracture portion 233 is set to be equal to or less than the thickness D of the plastic sheet 10. The thickness C3 is desirably set to an interval included in the range of 5% to 60% of the thickness D.

上述の第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３３の第１罫線付設刃３３Ａ、及び第２罫線付設刃３３Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して付設する。   The first break open ruled line 23A and the second break open ruled line 23B are formed by the first ruled line-equipped blade 33A and the second ruled line-equipped blade 33B of the ruled line-attached blade 33 attached to a not-shown ruled line attaching apparatus. Are attached to both the upper and lower surfaces of the bent portion F facing each other in the thickness direction T.

つまり、第１罫線付設刃３３Ａ、及び第２罫線付設刃３３Ｂの刃先が対峙する部分に、破断開封罫線２３の長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状を有し、プラスチックシート１０の折り曲げにより破断可能な破断部２３３を形成する。   In other words, it has a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the fractured open ruled line 23 at the part where the cutting edges of the first ruled line provided blade 33A and the second ruled line provided blade 33B face each other, A breakable portion 233 that can be broken by bending the plastic sheet 10 is formed.

一方、第２罫線付設刃３３Ｂは、第１破断開封罫線２３Ａにおける一対の側面部３３１と対峙する刃先形状を備え、該第２罫線付設刃３３Ｂにおける刃先の幅方向Ｗ内側の側面部３３１が、第１罫線付設刃３３Ａにおける刃先の一対の側面部３３１に対して所定間隔に近接されるように、該第１罫線付設刃３３Ａの幅方向Ｗ両側部に配置している（図６参照）。   On the other hand, the second ruled line provided blade 33B has a cutting edge shape that faces the pair of side surface parts 331 in the first break open ruled line 23A, and the side surface part 331 on the inner side in the width direction W of the blade edge in the second ruled line provided blade 33B, The first ruled lined blade 33A is disposed on both sides in the width direction W of the first ruled lined blade 33A so as to be close to the pair of side surface parts 331 of the blade edge at a predetermined distance (see FIG. 6).

第１罫線付設刃３３Ａの刃先は、所定角度で傾斜し相互に対峙する一対の側面部３３１と、該側面部３３１の一端側と連続する幅狭の底面部３３２とで構成している。第２罫線付設刃３３Ｂの刃先は、所定角度で傾斜し相互に対峙する一対の側面部３３１を２つ組み合わせて構成している。   The blade edge of the first ruled blade 33A is composed of a pair of side surface portions 331 which are inclined at a predetermined angle and face each other, and a narrow bottom surface portion 332 which is continuous with one end side of the side surface portion 331. The blade edge of the second ruled blade 33B is formed by combining two pairs of side surfaces 331 that are inclined at a predetermined angle and face each other.

一対の側面部３３１は、該罫線付設刃３３Ａ，３３Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底部３３２は、該罫線付設刃３３Ａ，３３Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している。   The pair of side surface portions 331 is formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the ruled line-equipped blades 33A and 33B. The bottom portion 332 is formed in a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the ruled blades 33A, 33B.

第１罫線付設刃３３Ａ、及び第２罫線付設刃３３Ｂにおける刃先の幅方向Ｗに近接した側面部３３１間の間隔は、罫線付設時において、プラスチックシート１０の肉厚Ｄ以下、具体的には肉厚Ｃ３と対応する間隔となるように設定している。   In the first ruled blade 33A and the second ruled blade 33B, the distance between the side portions 331 adjacent to the width direction W of the blade edge is equal to or less than the wall thickness D of the plastic sheet 10 when the ruled line is provided, specifically, the thickness. An interval corresponding to the thickness C3 is set.

実施例３では、第２罫線付設刃３３Ｂを、断面略Ｖ字形の刃先を有する２枚の罫線付設刃を重ね合わせて、１つの罫線付設刃として構成しているが、例えば、１枚の第２罫線付設刃３３Ｂにおける刃先を、断面略上下逆Ｗ字形を有する刃先に加工してもよい。   In the third embodiment, the second ruled blade 33B is configured as one ruled blade by superimposing two ruled blades having a substantially V-shaped cutting edge. The cutting edge of the two ruled blades 33B may be processed into a cutting edge having a substantially W-shaped cross section.

上述の第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける側面部２３１の幅方向Ｗに重なり合う部分の破断部２３３の寸法Ａは、上述の肉厚Ｄを基準として、該肉厚Ｄの５％〜６０％の範囲に含まれる寸法に設定するのが望ましい。   The dimension A of the rupture portion 233 of the first rupture opening ruled line 23A and the second rupture opening crease line 23B that overlaps the width direction W of the side surface portion 231 is based on the thickness D described above. It is desirable to set the dimension within the range of 5% to 60%.

第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける厚み方向Ｔの深さＢは、上述の肉厚Ｄを基準として、該肉厚Ｄの１０％〜９０％の範囲に含まれる寸法に設定するのが望ましい。   The depth B in the thickness direction T of the first breaking opening ruled line 23A and the second breaking opening ruled line 23B is a dimension included in the range of 10% to 90% of the thickness D on the basis of the thickness D described above. It is desirable to set.

第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける厚み方向Ｔの食い込み角度θ３は、５度〜５０度の範囲に含まれる角度に設定するのが望ましい。
第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける底部３１２の高低差Ｈは、実施例１と同一であるので、その説明を省略する。 The biting angle θ3 in the thickness direction T of the first break opening ruled line 23A and the second break opening ruled line 23B is preferably set to an angle included in the range of 5 degrees to 50 degrees.
Since the height difference H of the bottom 312 in the first break opening ruled line 23A and the second break opening ruled line 23B is the same as that in the first embodiment, the description thereof is omitted.

なお、上述の寸法Ａ、深さＢ、肉厚Ｃ３、角度θ３、高低差Ｈは、第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂと対応して、第１罫線付設刃３３Ａ、及び第２罫線付設刃３３Ｂにも適用している。   The dimension A, the depth B, the thickness C3, the angle θ3, and the height difference H described above correspond to the first breaking opening ruled line 23A and the second breaking opening ruled line 23B, and the first ruled blade 33A, This is also applied to the second ruled blade 33B.

次に、上述した破断開封罫線２３の第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設した効果について説明する（図６参照）。   Next, the effect of providing the first break opening ruled line 23A and the second break open ruled line 23B of the above-described break open ruled line 23 on both upper and lower surfaces of the bent portion F in the plastic sheet 10 will be described (see FIG. 6).

詳述すると、破断部２３３を、第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける厚み方向Ｔ、及び幅方向Ｗに近接した側面部２３１の間に設けることにより、破断開封罫線２３Ａ，２３Ｂの付設深さが深過ぎたり、浅過ぎる等しても、側面部２３１の間に設けた破断部２３３の肉厚Ｃ３は変化することがなく、破断部２３３の肉厚Ｃ３を、側面部２３１が対向する範囲において一定の肉厚Ｃ３に保つことができる。   Specifically, by providing the breaking portion 233 between the side surface portion 231 adjacent to the thickness direction T and the width direction W of the first breaking opening ruled line 23A and the second breaking opening ruled line 23B, the breaking opening ruled line 23A, Even if the attachment depth of 23B is too deep or too shallow, the thickness C3 of the fracture portion 233 provided between the side surface portions 231 does not change, and the thickness C3 of the fracture portion 233 is changed to the side surface portion. A constant thickness C3 can be maintained in a range where 231 faces.

これにより、プラスチックシート１０の折り曲げ、及び破断部２３３の破断が一定の折り曲げ力にて行え、プラスチックシート１０の折り曲げ性がより良好となるうえ、折り曲げ及び破断がより安定して行える。   As a result, the plastic sheet 10 can be bent and the breaking portion 233 can be broken with a constant bending force, and the plastic sheet 10 can be folded better and can be bent and broken more stably.

しかも、プラスチックシート１０を折り曲げる際、及び破断部２３３を破断する際に付与する折り曲げ力を一定に保つことができるうえ、破断部２３３を１箇所設けるのに比べて、破断部２３３を２箇所設ける方が、プラスチックシート１０を折り曲げる際の折曲げ抵抗がより弱くなり、より折り曲げ及び破断し易くすることができる。   In addition, the bending force applied when the plastic sheet 10 is bent and when the breaking portion 233 is broken can be kept constant, and two breaking portions 233 are provided as compared with one breaking portion 233. However, the bending resistance at the time of bending the plastic sheet 10 becomes weaker, and the plastic sheet 10 can be more easily bent and broken.

さらに、第１破断開封罫線２３Ａ、及び第２破断開封罫線２３Ｂにおける幅方向Ｗに近接した側面部２３１間の破断部２３３の肉厚Ｃ３を薄くすることができるうえ、該破断部２３３を、長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成することができる。
この結果、実施例１，２と略同等あるいは同等以上の作用及び効果を奏することができる。 Furthermore, the thickness C3 of the break portion 233 between the side surface portions 231 adjacent to the width direction W in the first break open ruled line 23A and the second break open ruled line 23B can be reduced, and the break portion 233 is elongated. It can be formed into a wave shape in the width direction W and the thickness direction T over the direction L.
As a result, it is possible to achieve substantially the same or equivalent effects and effects as in the first and second embodiments.

（実施例４）
次に、実施例４におけるプラスチックシート１０の折り曲げ部Ｆに付設した波溝形の破断開封罫線２４と、該破断開封罫線２４を付設する際に用いられる波刃形の罫線付設刃３４について説明する。
図７は実施例４の破断開封罫線２４、及び罫線付設刃３４の部分拡大斜視図、図８は第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂの底面部２４２を斜めに形成した他の例を示す部分拡大斜視図である。 Example 4
Next, the corrugated break open ruled line 24 attached to the bent portion F of the plastic sheet 10 in Example 4 and the corrugated ruled blade 34 used when attaching the break open ruled line 24 will be described. .
FIG. 7 is a partially enlarged perspective view of the break opening ruled line 24 and the ruled blade 34 according to the fourth embodiment. FIG. 8 is a view in which the first break opening ruled line 24A and the bottom part 242 of the second break open ruled line 24B are formed obliquely. It is a partial expansion perspective view which shows the example of.

実施例４の破断開封罫線２４は、プラスチックシート１０における折り曲げ部Ｆの上面に付設した断面略台形を有する波溝形の第１破断開封罫線２４Ａと、折り曲げ部Ｆの下面に付設した断面略台形を有する波溝形の第２破断開封罫線２４Ｂで構成している。   The break open ruled line 24 of the fourth embodiment includes a corrugated first break open ruled line 24A having a substantially trapezoidal cross section attached to the upper surface of the bent portion F of the plastic sheet 10 and a substantially trapezoidal cross section attached to the lower surface of the bent portion F. It is comprised by the corrugated 2nd breaking opening ruled line 24B.

第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂは、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、該破断開封罫線２４Ａ，２４Ｂにおける波溝の山部と谷部が互いに一致するように付設している（図７参照）。   The first break opening ruled line 24A and the second break open ruled line 24B are opposed to the upper and lower surfaces of the bent part F in the plastic sheet 10 in the thickness direction T, and the crests and troughs of the wave grooves in the break opened ruled lines 24A and 24B. The parts are attached so as to coincide with each other (see FIG. 7).

第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂは、所定角度で傾斜し相互に対峙する一対の側面部２４１と、該側面部２４１の一端側と連続する底面部２４２で構成するとともに、長手方向Ｌの一端側から見て断面略台形を有する凹状の溝に形成している。   The first breaking opening ruled line 24A and the second breaking opening ruled line 24B are composed of a pair of side face parts 241 inclined at a predetermined angle and facing each other, and a bottom face part 242 continuous with one end side of the side face part 241, It is formed in a concave groove having a substantially trapezoidal cross section when viewed from one end side in the longitudinal direction L.

一対の側面部２４１は、該破断開封罫線２４Ａ，２４Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底面部２４２は、該破断開封罫線２４Ａ，２４Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している（図７参照）。   The pair of side surface portions 241 is formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the break open ruled lines 24A and 24B. The bottom surface portion 242 is formed in a shape that undulates in the width direction W and the thickness direction T along the longitudinal direction L of the break open ruled lines 24A and 24B (see FIG. 7).

第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける厚み方向Ｔに近接した底面部２４２の間には、肉厚Ｃ４が長手方向Ｌに亘って一定するとともに、プラスチックシート１０の折曲げ方向の折り曲げにより破断可能な破断部２４３を形成している。   The thickness C4 is constant in the longitudinal direction L between the bottom surface portion 242 adjacent to the thickness direction T in the first breaking opening ruled line 24A and the second breaking opening ruled line 24B, and the plastic sheet 10 is folded in the folding direction. The fracture | rupture part 243 which can be fractured | ruptured by bending is formed.

破断部２４３の肉厚Ｃ４は、プラスチックシート１０の肉厚Ｄ以下の厚みとなるように設定している。肉厚Ｃ４は、肉厚Ｄの５％〜６０％の範囲に含まれる間隔に設定するのが望ましい。   The thickness C4 of the fracture portion 243 is set to be equal to or less than the thickness D of the plastic sheet 10. The wall thickness C4 is desirably set to an interval included in the range of 5% to 60% of the wall thickness D.

上述の第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３４の第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して付設する。   The first break opening ruled line 24A and the second break open ruled line 24B are formed by the plastic sheet 10 by the first ruled line-equipped blade 34A and the second ruled line-equipped blade 34B of the ruled line-equipped blade 34 attached to a not-shown ruled line attaching apparatus. Are attached to both the upper and lower surfaces of the bent portion F facing each other in the thickness direction T.

つまり、第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂの刃先が対峙する部分に、破断開封罫線２４の長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状を有し、プラスチックシート１０の折り曲げにより破断可能な破断部２４３を形成する。   In other words, it has a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the break open ruled line 24 at the part where the cutting edges of the first ruled lined blade 34A and the second ruled lined blade 34B face each other, A breakable portion 243 that can be broken by bending the plastic sheet 10 is formed.

一方、罫線付設刃３４は、第１破断開封罫線２４Ａと対応して断面略台形を有する波刃形の第１罫線付設刃３４Ａと、第２破断開封罫線２４Ｂを付設する断面略台形を有する波刃形の第２罫線付設刃３４Ｂとで構成され、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して配置している（図７参照）。   On the other hand, the ruled lined blade 34 has a corrugated first trapezoidal blade 34A having a substantially trapezoidal cross section corresponding to the first break opening ruled line 24A, and a wave having a substantially trapezoidal cross section to which the second fractured open ruled line 24B is attached. It is composed of a blade-shaped second ruled blade 34B, and is arranged on both upper and lower surfaces of the bent portion F in the plastic sheet 10 so as to face each other in the thickness direction T (see FIG. 7).

第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂの刃先は、所定角度で傾斜し相互に対峙する一対の側面部３４１と、該側面部３４１の一端側と連続する幅狭の底面部３４２とで構成している。   The cutting edges of the first ruled blade 34A and the second ruled blade 34B have a pair of side surfaces 341 that are inclined at a predetermined angle and face each other, and a narrow bottom surface portion 342 that is continuous with one end of the side surface 341. It consists of and.

一対の側面部３４１は、該罫線付設刃３４Ａ，３４Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底面部３４２は、該罫線付設刃３１Ａ，３１Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している。   The pair of side surface portions 341 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the ruled blades 34A, 34B. The bottom surface portion 342 is formed in a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the ruled blades 31A and 31B.

第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂにおいて厚み方向Ｔに近接される底面部３４２間の間隔は、罫線付設時において、プラスチックシート１０の肉厚Ｄ以下、具体的には肉厚Ｃ４と対応する間隔となるように設定している。   In the first ruled blade 34A and the second ruled blade 34B, the interval between the bottom surface portions 342 adjacent to the thickness direction T is equal to or less than the thickness D of the plastic sheet 10 when the ruled line is provided, specifically, the thickness. An interval corresponding to C4 is set.

上述の第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける底面部２４２の厚み方向Ｗに重なり合う部分の破断部２４３の寸法Ａは、プラスチックシート１０の肉厚Ｄを基準として、該肉厚Ｄの５％〜４５％の範囲に含まれる寸法に設定するのが望ましい。   The dimension A of the rupture portion 243 of the portion overlapping the thickness direction W of the bottom surface portion 242 in the first rupture opening ruled line 24A and the second rupture opening ruled line 24B is based on the thickness D of the plastic sheet 10. It is desirable to set the dimension within the range of 5% to 45% of D.

上述の第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける側面部３４１の波打ち幅Ｒは、プラスチックシート１０における肉厚Ｄの１０％〜３００％の範囲に含まれる寸法に設定するのが望ましい。   The wavy width R of the side surface portion 341 in the first break opening ruled line 24A and the second break open ruled line 24B is set to a dimension included in the range of 10% to 300% of the thickness D in the plastic sheet 10. desirable.

第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける厚み方向Ｔの深さＢは、上述の肉厚Ｄを基準として、該肉厚Ｄの３０％〜７０％の範囲に含まれる寸法に設定するのが望ましい。   The depth B in the thickness direction T of the first breaking opening ruled line 24A and the second breaking opening ruled line 24B is a dimension included in the range of 30% to 70% of the thickness D based on the thickness D described above. It is desirable to set.

第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける厚み方向Ｔの幅方向Ｗの食い込み角度θ４は、３度〜７０度の範囲に含まれる角度に設定するのが望ましい。
第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける底部２４２の高低差Ｈは、実施例１と同一であるので、その説明を省略する。 The biting angle θ4 in the width direction W of the thickness direction T in the first break opening ruled line 24A and the second break opening ruled line 24B is preferably set to an angle included in the range of 3 degrees to 70 degrees.
Since the height difference H of the bottom portion 242 in the first break open ruled line 24A and the second break open ruled line 24B is the same as that in the first embodiment, the description thereof is omitted.

なお、上述の寸法Ａ、深さＢ、肉厚Ｃ４、角度θ４、高低差Ｈは、第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂと対応して、第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂにも適用している。   The dimensions A, depth B, wall thickness C4, angle θ4, and height difference H described above correspond to the first break opening ruled line 24A and the second break open ruled line 24B, and the first ruled blade 34A, This is also applied to the second ruled blade 34B.

上記角度θ４を設定することにより、第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂの深さに振れが生じても、刃先が直角的であるのに比べて肉厚Ｃ４の変動が少ないという利点を有している。   By setting the angle θ4, even if the depths of the first ruled lined blade 34A and the second ruled lined blade 34B fluctuate, the variation in the thickness C4 is less than that when the blade edge is perpendicular. Has the advantage.

次に、上述した破断開封罫線２４の第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設した効果について説明する（図７参照）。   Next, the effect of attaching the first break opening ruled line 24A and the second break opening ruled line 24B of the above-described break open ruled line 24 to the upper and lower surfaces of the bent portion F in the plastic sheet 10 will be described (see FIG. 7).

詳述すると、破断部２４３を、第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける厚み方向Ｔに近接した底面部２４２の間に設けることにより、底面部２４２が対向する範囲において破断部２４３の肉厚Ｃ４を一定に保つことができる。
これにより、プラスチックシート１０の折り曲げ、及び破断部２４３の破断が一定の折り曲げ力にて行え、プラスチックシート１０の折り曲げ性がより良好となるうえ、折り曲げ及び破断がより安定して行える。 More specifically, by providing the breaking portion 243 between the bottom portion 242 adjacent to the thickness direction T in the first breaking opening ruled line 24A and the second breaking opening ruled line 24B, the breaking portion is within the range where the bottom portion 242 faces. The thickness C4 of 243 can be kept constant.
As a result, the plastic sheet 10 can be bent and the breaking portion 243 can be broken with a constant bending force, and the plastic sheet 10 can be bent better and can be bent and broken more stably.

しかも、第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける厚み方向Ｔに近接した底面部２４２間の破断部２４３の肉厚Ｃ４を薄くすることができるうえ、該破断部２４３を、長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成することができる。
この結果、実施例１，２と略同等あるいは同等以上の作用及び効果を奏することができる。 Moreover, the thickness C4 of the rupture portion 243 between the bottom surface portions 242 adjacent to the thickness direction T in the first rupture opening ruled line 24A and the second rupture opening ruled line 24B can be reduced, and the rupture portion 243 can be It can be formed into a wave shape in the width direction W and the thickness direction T over the direction L.
As a result, it is possible to achieve substantially the same or equivalent effects and effects as in the first and second embodiments.

上述の第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂにおける底面部２４２を角度θ４に傾斜して付設してもよい。この場合、第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂにおける一対の側面部３４１の高さを変更する（図８参照）。   You may attach the bottom face part 242 in the above-mentioned 1st breaking opening ruled line 24A and the 2nd breaking open ruled line 24B inclining to angle (theta) 4. In this case, the height of the pair of side surface parts 341 in the first ruled line-equipped blade 34A and the second ruled line-equipped blade 34B is changed (see FIG. 8).

つまり、第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂにおける幅方向Ｗの一端側と対応する一方の側面部３４１を高く、幅方向Ｗの他端側と対応する他方の側面部３４１を低くして、該側面部３４１と連続する底面部３４２を角度θ４に傾斜する。   That is, the first side surface portion 341 corresponding to one end side in the width direction W of the first ruled line provided blade 34A and the second ruled line provided blade 34B is made high, and the other side surface portion 341 corresponding to the other end side in the width direction W is formed. By lowering, the bottom surface portion 342 continuing to the side surface portion 341 is inclined at an angle θ4.

底面部３４２が傾斜する第１罫線付設刃３４Ａ、及び第２罫線付設刃３４Ｂを用いて、第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂをプラスチックシート１０の折り曲げ部Ｆに付設することにより、底面部２４２が角度θ４に傾斜する第１破断開封罫線２４Ａ、及び第２破断開封罫線２４Ｂを付設することができる。
この結果、底面部２４２間の破断部２４３が傾斜するも、実施例４と略同等の作用及び効果を奏することができる。 The first break opening ruled line 24A and the second break open ruled line 24B are attached to the bent portion F of the plastic sheet 10 by using the first ruled lined blade 34A and the second ruled lined blade 34B whose bottom surface part 342 is inclined. Thus, the first break opening ruled line 24A and the second break opening ruled line 24B in which the bottom surface part 242 is inclined at the angle θ4 can be attached.
As a result, even though the fractured portion 243 between the bottom surface portions 242 is inclined, it is possible to achieve substantially the same operations and effects as in the fourth embodiment.

（実施例５）
次に、実施例５におけるプラスチックシート１０の折り曲げ部Ｆに付設した波溝形の破断開封罫線２５と、該破断開封罫線２５を付設する際に用いられる波刃形の罫線付設刃３５について説明する。
図９は実施例５の破断開封罫線２５、及び罫線付設刃３５の部分拡大斜視図である。 (Example 5)
Next, the corrugated break open ruled line 25 attached to the bent portion F of the plastic sheet 10 in Example 5 and the corrugated ruled blade 35 used when attaching the break open ruled line 25 will be described. .
FIG. 9 is a partially enlarged perspective view of the fracture opening ruled line 25 and the ruled lined blade 35 of the fifth embodiment.

実施例５の破断開封罫線２５は、プラスチックシート１０における折り曲げ部Ｆの上面に付設した断面略凹形を有する波溝形の第１破断開封罫線２５Ａと、折り曲げ部Ｆの下面に付設した断面略凹形を有する波溝形の第２破断開封罫線２５Ｂで構成している。   The break open ruled line 25 of the fifth embodiment includes a corrugated first break open ruled line 25 </ b> A having a substantially concave cross section attached to the upper surface of the bent portion F in the plastic sheet 10, and a cross section substantially attached to the lower surface of the bent portion F. It consists of a corrugated second break open ruled line 25B having a concave shape.

第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂは、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して、該破断開封罫線２５Ａ，２５Ｂにおける波溝の山部と谷部が互いに一致するように付設している（図９参照）。   The first break opening ruled line 25A and the second break open ruled line 25B are opposed to the upper and lower surfaces of the bent part F in the plastic sheet 10 in the thickness direction T, and the crests and valleys of the wave grooves in the break opened ruled lines 25A and 25B. The parts are attached so as to coincide with each other (see FIG. 9).

第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂは、所定角度で傾斜し相互に対峙する一対の側面部２５１と、該側面部２５１の一端側と連続する上向きに突出した断面略凸形の底面部２５２で構成するとともに、長手方向Ｌの一端側から見て断面略凹形を有する凹状の溝に形成している。   The first break opening ruled line 25A and the second break open ruled line 25B are a pair of side surfaces 251 that are inclined at a predetermined angle and face each other, and a substantially convex cross section that protrudes upward and continues to one end of the side surface 251. , And a groove having a substantially concave shape when viewed from one end in the longitudinal direction L.

一対の側面部２５１は、該破断開封罫線２５Ａ，２５Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底面部２５２は、該破断開封罫線２５Ａ，２５Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している（図９参照）。   The pair of side surface portions 251 are formed in a shape that undulates in the width direction W intersecting the longitudinal direction L over the longitudinal direction L of the break open ruled lines 25A and 25B. The bottom surface portion 252 is formed in a shape that undulates in the width direction W and the thickness direction T along the longitudinal direction L of the break open ruled lines 25A and 25B (see FIG. 9).

第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける厚み方向Ｔに近接した底面部２５２の間には、肉厚Ｃ５が長手方向Ｌに亘って一定するとともに、プラスチックシート１０の折曲げ方向の折り曲げにより破断可能な破断部２５３を形成している。   Between the bottom surface portion 252 adjacent to the thickness direction T in the first break opening ruled line 25A and the second break opening ruled line 25B, the thickness C5 is constant over the longitudinal direction L, and the folding direction of the plastic sheet 10 The fracture | rupture part 253 which can be fractured | ruptured by bending is formed.

破断部２５３の肉厚Ｃ５は、プラスチックシート１０の肉厚Ｄ以下の厚みとなるように設定している。肉厚Ｃ５は、肉厚Ｄの５％〜６０％の範囲に含まれる間隔に設定するのが望ましい。   The thickness C5 of the fractured portion 253 is set to be equal to or less than the thickness D of the plastic sheet 10. The wall thickness C5 is desirably set to an interval included in the range of 5% to 60% of the wall thickness D.

上述の第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３５の第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して付設する。   The first break open ruled line 25A and the second break open ruled line 25B are formed by the first ruled line-equipped blade 35A and the second ruled line-equipped blade 35B of the ruled line-attached blade 35 attached to the not-shown ruled line attaching apparatus. Are attached to both the upper and lower surfaces of the bent portion F facing each other in the thickness direction T.

上述の第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂは、図示しない罫線付設装置に取り付けた罫線付設刃３５の第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂにより、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して付設する。   The first break open ruled line 25A and the second break open ruled line 25B are formed by the first ruled line-equipped blade 35A and the second ruled line-equipped blade 35B of the ruled line-attached blade 35 attached to the not-shown ruled line attaching apparatus. Are attached to both the upper and lower surfaces of the bent portion F facing each other in the thickness direction T.

つまり、第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂの刃先が対峙する部分に、破断開封罫線２５の長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状を有し、プラスチックシート１０の折り曲げにより破断可能な破断部２５３を形成する。   That is, it has a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the break open ruled line 25 at the part where the cutting edges of the first ruled line provided blade 35A and the second ruled line provided blade 35B face each other. A breakable portion 253 that can be broken by bending the plastic sheet 10 is formed.

一方、罫線付設刃３５は、第１破断開封罫線２５Ａと対応して断面略凸形を有する波刃形の第１罫線付設刃３５Ａと、第２破断開封罫線２５Ｂを付設する断面略凸形を有する波刃形の第２罫線付設刃３５Ｂで構成され、プラスチックシート１０における折り曲げ部Ｆの上下両面に厚み方向Ｔに対峙して配置している（図９参照）。   On the other hand, the ruled-lined blade 35 has a corrugated first ruled-lined blade 35A having a substantially convex cross section corresponding to the first break-opened ruled line 25A, and a substantially convex cross-section having a second break-opened ruled line 25B. It has a wavy blade-shaped second ruled blade 35B and is disposed on both upper and lower surfaces of the bent portion F of the plastic sheet 10 so as to face each other in the thickness direction T (see FIG. 9).

第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂの刃先は、第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂと対応して、所定角度で傾斜し相互に対峙する一対の側面部３５１と、該側面部３５１の一端側と連続する凹状、及び凸状の底面部３５２とで構成している。   The cutting edges of the first ruled blade 35A and the second ruled blade 35B correspond to the first break open ruled line 25A and the second break open ruled line 25B, and a pair of side surfaces that are inclined at a predetermined angle and face each other. 351, a concave shape continuous with one end side of the side surface portion 351, and a convex bottom surface portion 352.

一対の側面部３５１は、該罫線付設刃３５Ａ，３５Ｂの長手方向Ｌに亘って該長手方向Ｌと交差する幅方向Ｗに波打つ形状に形成している。底面部３５２は、該罫線付設刃３５Ａ，３５Ｂの長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成している。   The pair of side surface portions 351 are formed in a shape that undulates in the width direction W intersecting with the longitudinal direction L over the longitudinal direction L of the ruled blades 35A and 35B. The bottom surface portion 352 is formed in a shape that undulates in the width direction W and the thickness direction T over the longitudinal direction L of the ruled blades 35A, 35B.

第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂにおいて厚み方向Ｔに近接される底面部３５２間の間隔は、罫線付設時において、プラスチックシート１０の肉厚Ｄ以下、具体的には肉厚Ｃ５と対応する間隔となるように設定している。   In the first ruled blade 35A and the second ruled blade 35B, the distance between the bottom surface portions 352 adjacent to the thickness direction T is equal to or less than the thickness D of the plastic sheet 10 when the ruled wire is provided, specifically, the thickness. An interval corresponding to C5 is set.

上述の第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける底面部２５２の厚み方向Ｗに重なり合う部分の破断部２５３の寸法Ａは、プラスチックシート１０の肉厚Ｄを基準として、該肉厚Ｄの５％〜４５％の範囲に含まれる寸法に設定するのが望ましい（図９参照）。   The dimension A of the breaking portion 253 of the portion overlapping the thickness direction W of the bottom surface portion 252 in the first breaking opening ruled line 25A and the second breaking opening ruled line 25B is based on the thickness D of the plastic sheet 10. It is desirable to set the dimension within a range of 5% to 45% of D (see FIG. 9).

第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける厚み方向Ｔの深さＢは、上述の肉厚Ｄを基準として、該肉厚Ｄの４５％〜９０％の範囲に含まれる深さに設定するのが望ましい。   The depth B in the thickness direction T of the first breaking opening ruled line 25A and the second breaking opening ruled line 25B is a depth included in the range of 45% to 90% of the thickness D on the basis of the thickness D described above. It is desirable to set to.

第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける厚み方向Ｔの食い込み角度θ５は、５度〜５０度の範囲に含まれる角度に設定するのが望ましい。
第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける底部２５２の高低差Ｈは、実施例１と同一であるので、その説明を省略する。 The biting angle θ5 in the thickness direction T of the first break opening ruled line 25A and the second break opening ruled line 25B is preferably set to an angle included in the range of 5 degrees to 50 degrees.
Since the height difference H of the bottom portion 252 in the first break open ruled line 25A and the second break open ruled line 25B is the same as that in the first embodiment, the description thereof is omitted.

なお、上述の寸法Ａ、深さＢ、肉厚Ｃ５、角度θ５、高低差Ｈは、第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂと、第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂにも適用している。   The dimensions A, depth B, wall thickness C5, angle θ5, and height difference H described above are the first break opening ruled line 25A, the second break opened ruled line 25B, the first ruled blade 35A, and the second ruled line. This is also applied to the attachment blade 35B.

次に、上述した破断開封罫線２５の第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設した効果について説明する（図９参照）。   Next, the effect of attaching the first break opening ruled line 25A and the second break opening ruled line 25B of the above-described break open ruled line 25 to the upper and lower surfaces of the bent portion F in the plastic sheet 10 will be described (see FIG. 9).

詳述すると、破断部２５３を、第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける厚み方向Ｔに近接した底面部２５２の間に設けることにより、底面部２５２が対向する範囲において破断部２５３の肉厚Ｃ５を一定に保つことができる。
これにより、プラスチックシート１０の折り曲げ、及び破断部２５３の破断が一定の折り曲げ力にて行え、プラスチックシート１０の折り曲げ性がより良好となるうえ、折り曲げ及び破断がより安定して行える。 More specifically, by providing the breakage portion 253 between the bottom surface portion 252 adjacent to the thickness direction T in the first breakage opening ruled line 25A and the second breakage opening ruled line 25B, the breakage portion is within the range where the bottom surface portion 252 faces. The wall thickness C5 of 253 can be kept constant.
As a result, the plastic sheet 10 can be bent and the breaking portion 253 can be broken with a constant bending force, and the plastic sheet 10 can be bent better and can be bent and broken more stably.

しかも、第１破断開封罫線２５Ａ、及び第２破断開封罫線２５Ｂにおける厚み方向Ｔに近接した底面部２５２間の破断部２５３の肉厚Ｃ５を薄くすることができるうえ、該破断部２５３を、長手方向Ｌに亘って幅方向Ｗ、及び厚み方向Ｔに波打つ形状に形成することができる。
この結果、実施例１，２と略同等あるいは同等以上の作用及び効果を奏することができる。 In addition, the thickness C5 of the rupture portion 253 between the bottom surface portions 252 adjacent to the thickness direction T in the first rupture opening crease line 25A and the second rupture opening crease line 25B can be reduced, and the rupture portion 253 can be It can be formed into a wave shape in the width direction W and the thickness direction T over the direction L.
As a result, it is possible to achieve substantially the same or equivalent effects and effects as in the first and second embodiments.

上記角度θ５を設定することにより、第１罫線付設刃３５Ａ、及び第２罫線付設刃３５Ｂの深さに振れが生じても、肉厚Ｃ５の変動が少ないという利点を有している。   By setting the angle θ5, there is an advantage that even if the first ruled blade 35A and the second ruled blade 35B are swung in the depth, the thickness C5 does not fluctuate.

次に、実施例１〜５で説明した破断開封罫線２１〜２５、及び罫線付設刃３１〜３５の他の波打ち形状について説明する。
図１０は破断開封罫線２２における溝部、及び罫線付設刃３２における刃部の他の波打ち形状の説明図であり、詳しくは、図１０（ａ）は断面略台形の溝部２０１又は刃部３０１を、長手方向Ｌに所定間隔を隔てて配置した簡略説明図、図１０（ｂ）は断面略三角形の溝部２０２又は刃部３０２を、長手方向Ｌに所定間隔を隔てて配置した簡略説明図である。 Next, the other undulating shapes of the break-opening ruled lines 21 to 25 and the ruled-lined blades 31 to 35 described in Examples 1 to 5 will be described.
FIG. 10 is an explanatory view of another undulation shape of the groove portion in the break opening ruled line 22 and the blade portion in the ruled blade 32. Specifically, FIG. 10A shows the groove portion 201 or the blade portion 301 having a substantially trapezoidal cross section. FIG. 10B is a simplified explanatory diagram in which grooves 202 or blades 302 having a substantially triangular cross section are arranged in the longitudinal direction L at a predetermined interval.

また、図１０（ｃ）は断面略半楕円形の溝部２０３又は刃部３０３を、長手方向Ｌに所定間隔を隔てて配置した簡略説明図、図１０（ｄ）は断面略半楕円形の溝部２０４又は刃部３０４を２個一組として、長手方向Ｌに所定間隔を隔てて配置した簡略説明図である。   FIG. 10C is a simplified explanatory diagram in which grooves 203 or blades 303 having a substantially semi-elliptical section are arranged at predetermined intervals in the longitudinal direction L, and FIG. 10D is a groove having a substantially semi-elliptical section. FIG. 4 is a simplified explanatory diagram in which two sets of 204 or blade portions 304 are arranged at a predetermined interval in the longitudinal direction L as a set.

さらにまた、図１０（ｅ）は断面略凹形の溝部２０５又は刃部３０５を、長手方向Ｌに所定間隔を隔てて配置した簡略説明図、図１０（ｆ）は断面略三角形の溝部２０６又は刃部３０６を、長手方向Ｌに連続して配置した簡略説明図である。   10 (e) is a simplified explanatory view in which grooves 205 or blades 305 having a substantially concave cross section are arranged at predetermined intervals in the longitudinal direction L, and FIG. 10 (f) is a groove 206 having a substantially triangular cross section or FIG. 6 is a simplified explanatory diagram in which blade portions 306 are continuously arranged in the longitudinal direction L.

上述の波打ち形状を有する罫線付設刃３２を用いて、これと対応する破断開封罫線２２を付設すれば、上述の実施例２と略同等の作用及び効果を奏することができる。
なお、図１０に示す溝部及び刃部の波打ち形状は、破断開封罫線２１，２３，２４，２５、及び罫線付設刃３１，３３，３４，３５にも適用することができる。 By using the ruled lined blade 32 having the wavy shape described above and attaching the break open ruled line 22 corresponding thereto, operations and effects substantially equivalent to those of the above-described second embodiment can be achieved.
Note that the wavy shapes of the groove and the blade shown in FIG. 10 can also be applied to the break-open ruled lines 21, 23, 24, and 25 and the ruled blades 31, 33, 34, and 35.

この発明の構成と、前記実施形態との対応において、
この発明の罫線付設部は、実施形態のプラスチックシート１０に対応するも、
この発明は、上述の実施形態の構成のみに限定されるものではなく、請求項に示される技術思想に基づいて応用することができ、多くの実施の形態を得ることができる。 In the correspondence between the configuration of the present invention and the embodiment,
The ruled line attachment portion of the present invention corresponds to the plastic sheet 10 of the embodiment,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

本発明は、波形や直線形の破断開封罫線のみに限定されるものではなく、例えば、罫線付設刃をＵ字状に曲げて付設した破断開封罫線や、両側に折り曲げ罫線を付設し、所望する深さの破断開封罫線を折り曲げ罫線の間に付設する等の様々な用途に実施することができる。   The present invention is not limited only to corrugated or linear break open ruled lines. For example, a break open ruled line formed by bending a ruled blade with a U-shape or a bent ruled line on both sides is desired. The present invention can be implemented for various uses such as attaching a breaking opening ruled line having a depth between bent ruled lines.

上述のプラスチックシート１０の折り曲げ部Ｆに付設した破断開封罫線２１〜２５を覆うように、例えば、アルミニウム箔、ステンレス箔、銅箔、鉄箔、樹脂フィルム等の肉厚が薄い箔体からなる封止材を貼着してもよい。   For example, an aluminum foil, a stainless steel foil, a copper foil, an iron foil, a resin film, or the like is made of a thin foil body so as to cover the break open ruled lines 21 to 25 attached to the bent portion F of the plastic sheet 10 described above. You may stick a stop material.

また、図示しない破断開封罫線をプラスチックシート１０の片面のみに付設した直線形罫線の従来構造と比較した場合、推定で、従来構造は約４０％〜約５０％の折り曲げ力にて破断するが、波形罫線を有する本発明の構造は、約２０％〜約６０％の広い範囲の折り曲げ力にて破断可能であるため、破断部２１３〜２５３の肉厚の振れが大きくても、実施可能である。   In addition, when compared with a conventional structure of a linear ruled line provided on only one side of the plastic sheet 10 with a break opening ruled line (not shown), the conventional structure is presumably broken with a bending force of about 40% to about 50%. Since the structure of the present invention having the wavy ruled line can be broken with a wide range of bending force of about 20% to about 60%, it can be implemented even if the thickness of the broken parts 213 to 253 is large. .

さらにまた、実施例１〜５における第１破断開封罫線、及び第２破断開封罫線を長手方向Ｌに位相をずらして付設するか、ピッチＰを異ならせて付設してもよく、第１破断開封罫線、及び第２破断開封罫線が部分的に近接するため、破断部の肉厚を部分的に薄くすることができる。
これにより、肉厚の薄い部分が、破断部における長手方向Ｌに複数形成されるため、破断部の肉厚を一定に形成するよりも、より破断し易くすることができる。 Furthermore, the first break opening ruled line and the second break opening ruled line in Examples 1 to 5 may be attached with the phase shifted in the longitudinal direction L, or may be attached with a different pitch P. Since the ruled line and the second break opening ruled line are partially close to each other, the thickness of the broken part can be partially reduced.
Thereby, since the thin part is formed in multiple in the longitudinal direction L in a fracture | rupture part, it can make it easier to fracture | rupture rather than forming the thickness of a fracture | rupture part constant.

実施例１〜５では、波刃形の罫線付設刃３１〜３５を用いて、波溝形の破断開封罫線２１〜２５を付設した例について説明したが、例えば、図１１、図１２に示す直刃形状の罫線付設刃を用いて、長手方向Ｌに真っ直ぐな直線溝形状の破断開封罫線を付設してもよく、実施例１〜５と同等の作用及び効果を奏することができる。   In Examples 1-5, although the example which attached the corrugated groove-shaped breaking opening ruled lines 21-25 using the blade-shaped ruled-lined blades 31-35 was demonstrated, for example, it is the straight line shown to FIG. 11, FIG. Using a blade-shaped ruled blade, a straight groove-shaped break-open ruled line that is straight in the longitudinal direction L may be provided, and operations and effects equivalent to those of Examples 1 to 5 can be achieved.

図１１は直線溝形状の破断開封罫線２２を付設した他の例を示す拡大斜視図であり、長手方向Ｌに真っ直ぐな直刃形状の第１罫線付設刃３２Ａ、及び第２罫線付設刃３２Ｂを用いて、長手方向Ｌに真っ直ぐで一方の側面部２２１が垂直な断面略Ｖ字形の第１破断開封罫線２２Ａ、及び第２破断開封罫線２２Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設している。
つまり、破断部２２３の肉厚Ｃ２を、側面部２２１が対向する範囲において一定の肉厚Ｃ２に保つことができるため、実施例２と略同等あるいは同等以上の作用及び効果を奏することができる。 FIG. 11 is an enlarged perspective view showing another example in which a straight groove-shaped fracture opening ruled line 22 is provided. The first ruled line-equipped blade 32A and the second ruled line-equipped blade 32B straight in the longitudinal direction L are shown. The first breaking opening ruled line 22A and the second breaking opening ruled line 22B having a substantially V-shaped cross section that is straight in the longitudinal direction L and perpendicular to one side face 221 are attached to the upper and lower surfaces of the bent part F in the plastic sheet 10. doing.
That is, since the thickness C2 of the fractured portion 223 can be maintained at a constant thickness C2 in a range where the side surface portions 221 face each other, operations and effects substantially equal to or greater than those of the second embodiment can be achieved.

また、図１２は直線溝形状の破断開封罫線２３を付設した他の例を示す拡大斜視図であり、長手方向Ｌに真っ直ぐな直刃形状の第１罫線付設刃３３Ａ、及び第２罫線付設刃３３Ｂを用いて、長手方向Ｌに真っ直ぐな断面略Ｖ字形の第１破断開封罫線２３Ａと、断面略Ｍ字形の第２破断開封罫線２３Ｂを、プラスチックシート１０における折り曲げ部Ｆの上下両面に付設している（図１２参照）。
つまり、破断部２３３の肉厚Ｃ３を、側面部２３１が対向する範囲において一定の肉厚Ｃ３に保つことができるため、実施例３と略同等あるいは同等以上の作用及び効果を奏することができる。 FIG. 12 is an enlarged perspective view showing another example in which a straight groove-shaped fracture opening ruled line 23 is provided. The first ruled line-equipped blade 33A and the second ruled line-equipped blade straight in the longitudinal direction L. 33B is used to attach a first break opening ruled line 23A having a substantially V-shaped cross section straight to the longitudinal direction L and a second break open ruled line 23B having a substantially M-shaped cross section on both upper and lower surfaces of the bent portion F of the plastic sheet 10. (See FIG. 12).
That is, since the thickness C3 of the fractured portion 233 can be maintained at a constant thickness C3 in the range where the side surface portions 231 face each other, operations and effects substantially equal to or greater than those of the third embodiment can be achieved.

Ｈ…高低差
Ｌ…長手方向
Ｗ…幅方向
Ｔ…厚み方向
１０…プラスチックシート
２１，２２，２３，２４，２５…破断開封罫線
２１Ａ，２２Ａ，２３Ａ，２４Ａ，２５Ａ…第１破断開封罫線
２１Ｂ，２２Ｂ，２３Ｂ，２４Ｂ，２５Ｂ…第２破断開封罫線
２１１，２２１，２３１，２４１，２５１…側面部
２１２，２２２，２３２…底部
２４２，２５２…底面部
２１３，２２３，２３３，２４３，２５３…破断部
３１，３２，３３，３４，３５…罫線付設刃
３１Ａ，３２Ａ，３３Ａ，３４Ａ，３５Ａ…第１罫線付設刃
３１Ｂ，３２Ｂ，３３Ｂ，３４Ｂ，３５Ｂ…第２罫線付設刃
３１１，３２１，３３１，３４１，３５１…側面部
３１２，３２２，３３２…底部
３４２，３５２…底面部 H ... Height difference L ... Longitudinal direction W ... Width direction T ... Thickness direction 10 ... Plastic sheet 21, 22, 23, 24, 25 ... Breaking opening ruled line 21A, 22A, 23A, 24A, 25A ... First breaking opening ruled line 21B, 22B, 23B, 24B, 25B ... 2nd breaking opening ruled line 211, 221, 231, 241, 251 ... Side surface part 212, 222, 232 ... Bottom part 242, 252 ... Bottom part 213, 223, 233, 243, 253 ... Broken part 31, 32, 33, 34, 35 ... blades with ruled lines 31A, 32A, 33A, 34A, 35A ... blades with first ruled lines 31B, 32B, 33B, 34B, 35B ... blades with second ruled lines 311, 321, 331, 341 , 351... Side surfaces 312, 322, 332... Bottom 342, 352.

Claims (6)

罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、
前記破断開封罫線を、
前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、
前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、
前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、
前記第１破断開封罫線、及び前記第２破断開封罫線を、
前記所定角度で傾斜し相互に対峙する一対の側面部と、該側面部の一端側を接続する鋭角な底部とで構成し、
前記破断部を、
前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向に近接した底部の間、又は前記長手方向と交差する幅方向にずらして対峙させた側面部の間に設けた
破断開封罫線。 It is a concave break opening ruled line having a pair of side surfaces inclined at a predetermined angle and attached to the ruled line attached part, and facing each other,
The break opening ruled line,
Consists of a first break opening ruled line attached to one surface of the ruled line attached portion, and a second break opened ruled line attached to the other surface.
In the opposite part of the first break opening ruled line and the second break opening ruled line,
A breakable portion that can be broken by bending in the folding direction of the ruled line-attached portion ,
The first break opening ruled line and the second break opening ruled line,
A pair of side surfaces that are inclined at the predetermined angle and face each other, and an acute bottom that connects one end side of the side surfaces,
The fracture portion,
The breaking opening ruled line provided between the bottom part adjacent to the thickness direction in the first breaking opening ruled line and the second breaking opening ruled line, or between the side parts opposed to each other in the width direction intersecting the longitudinal direction. . 罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、
前記破断開封罫線を、
前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、
前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、
前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、
前記第２破断開封罫線を、
前記第１破断開封罫線における一対の側面部に近接して該第１破断開封罫線の前記幅方向両側部に配置し、
前記破断部を、
前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向、及び幅方向に近接した側面部の間に設けた
破断開封罫線。 It is a concave break opening ruled line having a pair of side surfaces inclined at a predetermined angle and attached to the ruled line attached part, and facing each other,
The break opening ruled line,
Consists of a first break opening ruled line attached to one surface of the ruled line attached portion, and a second break opened ruled line attached to the other surface.
In the opposite part of the first break opening ruled line and the second break opening ruled line,
A breakable portion that can be broken by bending in the folding direction of the ruled line-attached portion ,
The second break opening ruled line,
Proximate to a pair of side portions in the first break opening ruled line, arranged on both sides in the width direction of the first break opening ruled line,
The fracture portion,
A break opening ruled line provided between side surfaces of the first break opening ruled line and the second break opening ruled line that are close to each other in the thickness direction and the width direction. 罫線付設部に付設された所定角度で傾斜し相互に対峙する一対の側面部を有する凹状の破断開封罫線であって、
前記破断開封罫線を、
前記罫線付設部における厚み方向に対峙して付設され、該罫線付設部における一方の面に付設した第１破断開封罫線と、他方の面に付設した第２破断開封罫線とで構成し、
前記第１破断開封罫線と前記第２破断開封罫線の対峙部分に、
前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部を備え、
前記第１破断開封罫線、及び前記第２破断開封罫線を、
前記所定角度で傾斜し相互に対峙する一対の側面部と、該側面部の一端側と連続する幅狭の底面部とで構成し、
前記破断部を、
前記第１破断開封罫線、及び前記第２破断開封罫線における前記厚み方向に近接した底面部の間に設けた
破断開封罫線。 It is a concave break opening ruled line having a pair of side surfaces inclined at a predetermined angle and attached to the ruled line attached part, and facing each other,
The break opening ruled line,
Consists of a first break opening ruled line attached to one surface of the ruled line attached portion, and a second break opened ruled line attached to the other surface.
In the opposite part of the first break opening ruled line and the second break opening ruled line,
A breakable portion that can be broken by bending in the folding direction of the ruled line-attached portion ,
The first break opening ruled line and the second break opening ruled line,
A pair of side surface portions that are inclined at the predetermined angle and face each other, and a narrow bottom surface portion that is continuous with one end side of the side surface portion,
The fracture portion,
The breaking opening ruled line provided between the first breaking opening ruled line and the bottom face part close to the thickness direction in the second breaking opening ruled line. 前記第１破断開封罫線、及び前記第２破断開封罫線が、
該破断開封罫線の長手方向に亘って該長手方向と交差する幅方向、及び前記罫線付設部の厚み方向のうち少なくとも一方に波打つ形状を備えた
請求項１から請求項３のうちいずれか一項に記載の破断開封罫線。 The first break opening ruled line and the second break opening ruled line are
4. The apparatus according to claim 1, further comprising a wavy shape in at least one of a width direction intersecting with the longitudinal direction and a thickness direction of the ruled line-attached portion over the longitudinal direction of the breaking opening ruled line. Break open ruled lines as described in 1. 凹状の破断開封罫線を罫線付設部に付設する際に用いられ、所定角度で傾斜し相互に対峙する一対の側面部を有する罫線付設刃であって、
前記罫線付設刃を、
前記罫線付設部における厚み方向に対峙して配置され、該罫線付設部における一方の面に第１破断開封罫線を付設する第１罫線付設刃と、他方の面に第２破断開封罫線を付設する第２罫線付設刃とで構成し、
前記第１罫線付設刃、及び前記第２罫線付設刃の対峙する刃先が、
前記罫線付設部における前記第１罫線付設刃、及び前記第２罫線付設刃の刃先が対峙する部分に、前記罫線付設部の折曲げ方向の折り曲げにより破断可能な破断部が形成される形状を備え、
前記第１罫線付設刃、及び前記第２罫線付設刃における一方の罫線付設刃が、他方の罫線付設刃における一対の側面部と対峙する刃先形状を備え、
該一方の罫線付設刃における刃先が、
該罫線付設刃における幅方向内側の側面部が、他方の罫線付設刃における一対の側面部に対して所定間隔に近接される刃先形状を備えた
破断開封罫線を付設する罫線付設刃。 A ruled blade with a pair of side surfaces that are used when a concave break open ruled line is attached to the ruled line attaching part, and is inclined at a predetermined angle to face each other,
The ruled blades,
The first ruled line-attached blade is arranged to face the thickness direction in the ruled line-attached portion, and the first break-opened ruled line is attached to one surface of the ruled-line attached portion, and the second break-opened ruled line is attached to the other surface. With a second ruled blade,
The cutting edge facing the first ruled line-equipped blade and the second ruled line-equipped blade,
A shape in which a breakable portion that can be broken by bending in the folding direction of the ruled line-attached portion is formed in a portion where the blade edges of the first ruled line-attached blade and the blade edge of the second ruled line-attached blade face each other in the ruled line-attached portion is provided. ,
One ruled line-equipped blade in the first ruled line-equipped blade and the second ruled line-equipped blade have a cutting edge shape facing a pair of side surfaces in the other ruled line-equipped blade,
The cutting edge of the one ruled blade is
A ruled line-attached blade for attaching a ruptured open ruled line having a cutting edge shape in which a side surface portion on the inner side in the width direction of the ruled line-attached blade is close to a pair of side surfaces of the other ruled line-attached blade at a predetermined interval. 前記第１罫線付設刃、及び前記第２罫線付設刃の刃先が、
該罫線付設刃の長手方向に亘って該長手方向と交差する幅方向、及び前記罫線付設部の厚み方向のうち少なくとも一方に波打つ形状を備えた
請求項５に記載の罫線付設刃。 The cutting edge of the first ruled line-equipped blade and the second ruled line-equipped blade,
A wavy shape is provided in at least one of the width direction intersecting the longitudinal direction and the thickness direction of the ruled line-attached portion over the longitudinal direction of the ruled line-attached blade.
The blade with ruled lines according to claim 5 .
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