JP4118911B2 - Adhesive tape cutter - Google Patents
Adhesive tape cutter Download PDFInfo
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- JP4118911B2 JP4118911B2 JP2005374063A JP2005374063A JP4118911B2 JP 4118911 B2 JP4118911 B2 JP 4118911B2 JP 2005374063 A JP2005374063 A JP 2005374063A JP 2005374063 A JP2005374063 A JP 2005374063A JP 4118911 B2 JP4118911 B2 JP 4118911B2
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- adhesive tape
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- 239000002390 adhesive tape Substances 0.000 title claims description 81
- 238000005520 cutting process Methods 0.000 claims description 117
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Nonmetal Cutting Devices (AREA)
- Adhesive Tape Dispensing Devices (AREA)
Description
本発明は、ロール状に巻回されてディスペンサに支持された粘着テープを、ロールから引き出して所望の長さに切断するためのカッターに関するものである。 The present invention relates to a cutter for pulling out an adhesive tape wound in a roll shape and supported by a dispenser and cutting it to a desired length.
ロール状に巻回されてディスペンサに回転自在に支持された合成樹脂製の粘着テープを、ロールから引き出して所望の長さに切断するためにディスペンサに設けられるカッターとして、粘着テープの粘着面を粘着／仮留めする仮留め部と、仮留め部の粘着テープ引き出し方向外側に設けられた切断刃とを有するものが知られている。 Adhesive adhesive surface of adhesive tape as a cutter provided in dispenser to pull out the synthetic resin adhesive tape wound in roll shape and rotatably supported by dispenser to cut it to desired length There is known one having a temporary fastening portion to be temporarily fastened and a cutting blade provided outside the temporary fastening portion in the direction of pulling out the adhesive tape.
こうしたカッターにおいては、ロールから引き出した粘着テープを所望の長さに切断するために、まず、粘着テープのロールから引き出した部分の粘着面を仮留め部に粘着して粘着テープを制動し、続いて、引き出した粘着テープの端末を保持する指と粘着テープを制動する仮留め部との間で粘着テープに張力を加え、粘着テープを切断刃に押し付けるという動作を行っている。つまり、粘着テープの切断したい箇所を、制動した上で切断刃に押し付け、屈折させた状態で粘着テープを引っ張ることで粘着テープを切断している。 In such a cutter, in order to cut the adhesive tape drawn out from the roll to a desired length, first, the adhesive surface of the part drawn out from the roll of the adhesive tape is adhered to the temporary fastening portion to brake the adhesive tape, and then Thus, an operation is performed in which tension is applied to the adhesive tape between a finger that holds the terminal of the drawn adhesive tape and a temporary fastening portion that brakes the adhesive tape, and the adhesive tape is pressed against the cutting blade. That is, the adhesive tape is cut by pulling the adhesive tape in a state where the portion to be cut of the adhesive tape is braked, pressed against the cutting blade, and refracted.
従来、こうしたカッターに設けられる切断刃として、多数の三角形の歯を列設してなる鋸刃状をなすものが多用されている（特許文献1を参照されたい）。 2. Description of the Related Art Conventionally, as a cutting blade provided in such a cutter, one having a saw blade shape in which a large number of triangular teeth are arranged (see Patent Document 1) is often used.
この鋸刃状の切断刃によると、張力によって切断刃に押し付けられた粘着テープは、多数の三角形の歯の頂点によって突き破られ、それをきっかけにしてその三角形の歯の両斜辺に沿って２方向に切り裂かれ、その連続によって切断されていた。このため、粘着テープの切断端縁は、鋸刃状をなす切断刃の輪郭に対応したジグザグ状をなしていた。
しかるに、従来の鋸刃状の切断刃によってジグザグ状に切断された粘着テープの切断端縁は、美観を損ない体裁が悪くなるので、場合によっては、端末のみを鋏（はさみ）で切除する作業を別途行う必要があった。 However, the cutting edge of the adhesive tape that has been cut in a zigzag shape with a conventional saw blade-like cutting blade is unsightly and poor in appearance, so in some cases, only the terminal is cut off with scissors. It was necessary to do it separately.
粘着テープの切断端縁を滑らかな直線状にするには、金属製の鋭利な直線状の刃先をディスペンサに設けることが考えられるが、市販されている一般的なディスペンサの場合、使い勝手上、刃先が外側を向いているので、鋭利な剃刀状の刃先を用いることは、安全性の面から現実的とは言い難い。 In order to make the cutting edge of the adhesive tape into a smooth straight line, it is conceivable to provide a sharp metal metal cutting edge on the dispenser. However, in the case of a general dispenser on the market, the cutting edge is easy to use. Since it faces outward, it is difficult to say that using a sharp razor-like cutting edge is practical from the viewpoint of safety.
本発明は、このような従来技術の欠点を解消すべく案出されたものであり、その主な目的は、安全性に関する問題を生ずることなく、粘着テープの切断端縁の凹凸を低減し、直線的に切断し得るように改良された粘着テープカッターを提供することにある。 The present invention has been devised to eliminate such drawbacks of the prior art, the main purpose of which is to reduce the unevenness of the cut edge of the adhesive tape without causing a safety problem, An object of the present invention is to provide an adhesive tape cutter improved so that it can be cut linearly.
このような課題を解決するために、本発明の請求項１は、粘着テープの粘着面を粘着／仮留めする仮留め部５を兼ねた第１の面（Ｈ）と、該第１の面の端部に連続する第２の面（Ｖ）と、その刃先線８によって前記粘着テープを切断する切断刃６とを有する粘着テープカッターであって、前記切断刃は、第１の面（Ｈ）と第２の面（Ｖ）とがなす直線状の稜線（刃先線８）と、該第１の面と該第２の面との双方に対して所定の切り込み長さをもって形成されることにより該稜線を分断する複数のスリット９とを備え、前記分断された稜線が、前記切断刃の唯一の刃先線をなすことを特徴とする粘着テープカッターとした。また請求項２においては、上記構成に加えて、スリットの開口幅を０．３ｍｍ〜１．０ｍｍとするものとした。また請求項３においては、上記構成に加えて、前記第１の面と前記第２の面とが略直交するものとした。また請求項４においては、前記切断刃が板材ＰＬであり、該板材の端面が前記第２の面の一部を構成するものとした。 In order to solve such a problem, claim 1 of the present invention includes a first surface (H) that also serves as a temporary fastening portion 5 for sticking / temporarily fastening the adhesive surface of the adhesive tape, and the first surface. The adhesive tape cutter has a second surface (V) continuous to the end of the tape and a cutting blade 6 that cuts the adhesive tape by its cutting edge line 8 , wherein the cutting blade has a first surface (H ) And the second surface (V) are formed with a predetermined cut length with respect to both the linear ridge line (blade edge line 8) and the first surface and the second surface. and a plurality of slits 9 for dividing the該稜line by the shed ridge line, and an adhesive tape cutter, wherein the forming the only edge line of the cutting blade. In addition, in addition to the said structure, the opening width of the slit shall be 0.3 mm-1.0 mm in Claim 2. According to a third aspect of the present invention, in addition to the above configuration, the first surface and the second surface are substantially orthogonal. According to a fourth aspect of the present invention, the cutting blade is a plate material PL, and an end surface of the plate material constitutes a part of the second surface.
このような本発明によれば、切断刃における直線状の稜線、即ち刃先線と、該稜線を分断する複数のスリットによって形成される刃先頂点とが一直線上にあるので、刃先頂点による突き破りと、突き破りに連続して行われる刃先線に沿った切り裂きとが、一直線上で行われることとなる。またスリット開口部においては、引き裂きが稜線に沿わずに伝播するが、特に、スリットの開口幅を０．３mm〜１．０mmとすれば、スリット開口部における引き裂き伝播が、刃先線の延在する一直線上から逸れることが抑制されるので、スリットによるギャップ部分の裂け目が刃先線と連続し、粘着テープの切断端縁に生ずる凹凸の頂部と底部との間の距離が過大にならずに済み、切断端縁の直線性が損なわれずに済む。従って本発明により、粘着テープの切断端縁を直線的にして切断端末の美観を高めることができる。また、刃先線が延在する直線上に突起部分がないので、カッターに接触するものを傷つける心配もない。 According to the present invention, since the straight ridge line in the cutting blade, that is, the blade edge line and the blade edge vertex formed by a plurality of slits that divide the edge line are on a straight line, the break by the edge of the blade edge, The tearing along the cutting edge line, which is performed continuously after the piercing, is performed on a straight line. In the slit opening, tearing propagates along the ridgeline. In particular, if the slit opening width is 0.3 mm to 1.0 mm, tear propagation in the slit opening extends the cutting edge line. Since the deviation from the straight line is suppressed, the gap in the slit due to the slit is continuous with the cutting edge line, and the distance between the top and bottom of the unevenness generated at the cut edge of the adhesive tape does not have to be excessive. The straightness of the cutting edge is not impaired. Therefore, according to the present invention, the cutting edge of the pressure-sensitive adhesive tape can be made linear to enhance the beauty of the cutting terminal. Moreover, since there is no projection part on the straight line where a blade edge line extends, there is no fear of damaging what contacts a cutter.
以下に添付の図面を参照して本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
図１は、本発明によるカッターが適用された粘着テープのディスペンサの一例である。このディスペンサ１は、合成樹脂フイルムの片面を粘着剤層とした公知の粘着テープを巻芯に巻回してなるテープロール２を回転自在に支持するテープロール保持部３と、指を挿入するためのノッチを形成するようにテープロール保持部３から延出したカッター支持部４とからなっている。そしてカッター支持部４には、粘着テープの粘着面を粘着／仮留めする仮留め部５と、仮留め部５の粘着テープ引出し方向外側に近接配置された切断刃６とからなるカッター７が設けられている。 FIG. 1 is an example of an adhesive tape dispenser to which a cutter according to the present invention is applied. The dispenser 1 includes a tape roll holding unit 3 that rotatably supports a tape roll 2 formed by winding a known adhesive tape having one side of a synthetic resin film as an adhesive layer around a winding core, and for inserting a finger. The cutter support portion 4 extends from the tape roll holding portion 3 so as to form a notch. The cutter support part 4 is provided with a cutter 7 comprising a temporary fastening part 5 for sticking / temporarily fastening the adhesive surface of the adhesive tape, and a cutting blade 6 arranged close to the outside of the temporary fastening part 5 in the direction of drawing out the adhesive tape. It has been.
切断刃６は、図２に示すように、水平面Ｈと垂直面Ｖとの２つの面が交わった角部の稜線を鋭いエッジの刃先線８とし、この一直線の刃先線８に多数のスリット９を形成することにより、刃渡り方向について刃先線８を分断してなるものである。そして、水平面Ｈと垂直面Ｖとの２つの面に渡って切り込むことによって２つの面Ｈ・Ｖのそれぞれに表れたスリット９の稜線と、刃先線８をなす稜線の端末との交点が、尖った刃先頂点１０となっている。なお、水平面Ｈおよび垂直面Ｖは、説明の便宜上であり、実際に水平、垂直で無くても良いことは言うまでもない。 As shown in FIG. 2, the cutting blade 6 has a sharp edge edge line 8 at the corner where the two surfaces of the horizontal plane H and the vertical plane V intersect, and a number of slits 9 on the straight edge line 8. Is formed by dividing the cutting edge line 8 in the blade crossing direction. Then, the intersection of the ridge line of the slit 9 that appears on each of the two surfaces H and V and the end of the ridge line that forms the cutting edge line 8 by cutting across the two surfaces of the horizontal plane H and the vertical plane V is sharp. It becomes the cutting edge vertex 10. It should be noted that the horizontal plane H and the vertical plane V are for convenience of explanation, and needless to say, they may not actually be horizontal or vertical.
刃先頂点１０を形成するためのスリット９は、突き破りを行うために、粘着テープの幅方向両端縁に対応する位置に設けられることが最低限必須であるが、刃先線８の鋭さのみによって刃先線８に沿った切り裂きを行わせるには限度がある。そこで刃渡り方向について複数のスリット９を形成することで複数の刃先頂点１０を形成させることにより、切り裂きの方向性の安定化を図っている。 The slit 9 for forming the cutting edge vertex 10 is at least essential to be provided at positions corresponding to both edges in the width direction of the adhesive tape in order to break through, but the cutting edge line is determined only by the sharpness of the cutting edge line 8. There is a limit to making the tear along 8. Therefore, by forming a plurality of slit vertices 10 by forming a plurality of slits 9 in the cutting edge direction, the directionality of the tearing is stabilized.
カッター７は、ディスペンサ１と同一材料でカッター支持部４に一体形成しても良いし、例えばステンレスの板材などで別に形成したものを、カッター支持部４に固定しても良い。またカッター７の材質としては、金属の他に、硬質プラスティックや硬質セラミック等も考えられる。 The cutter 7 may be formed integrally with the cutter support portion 4 with the same material as the dispenser 1, or may be formed separately with, for example, a stainless steel plate or the like, and fixed to the cutter support portion 4. The material of the cutter 7 may be hard plastic or hard ceramic in addition to metal.
このカッター７による粘着テープの切断手順は、先ず、図３に示すように、粘着テープのテープロール２から引き出した部分１１の切断したい箇所を切断刃６に押し付ける動作途中で、粘着テープの粘着面を仮留め部５に粘着して粘着テープを制動する。続いて図４に示すように、粘着テープの切断したい箇所を切断刃６で屈折させた状態で、粘着テープを制動した仮留め部５と粘着テープのテープロール２から引き出した部分１１の端末を保持した指との間に、粘着テープの幅方向切断開始側端縁に力が集中する向きの張力を加えて粘着テープを切断刃６に押し付ける。この結果、スリット９と刃先線８との交点である刃先頂点１０で粘着テープが突き破られ、且つ刃先線８に沿って粘着テープが切り裂かれる。ここで刃先線８と刃先頂点１０とが一直線上にあるので、突き破りと切り裂きとが一直線上で行われることとなる。 The procedure for cutting the adhesive tape by the cutter 7 is as follows. First, as shown in FIG. 3, the adhesive tape has an adhesive surface in the middle of the operation of pressing the portion 11 to be cut of the portion 11 drawn from the tape roll 2 against the cutting blade 6. Is adhered to the temporary fastening portion 5 to brake the adhesive tape. Subsequently, as shown in FIG. 4, in a state where the portion to be cut of the adhesive tape is refracted by the cutting blade 6, the temporary fastening portion 5 that brakes the adhesive tape and the end of the portion 11 pulled out from the tape roll 2 of the adhesive tape are connected. The adhesive tape is pressed against the cutting blade 6 by applying tension in the direction in which the force concentrates on the edge in the width direction cutting start side of the adhesive tape between the held fingers. As a result, the adhesive tape is pierced at the cutting edge vertex 10, which is the intersection of the slit 9 and the cutting edge line 8, and the adhesive tape is torn along the cutting edge line 8. Here, since the cutting edge line 8 and the cutting edge vertex 10 are on a straight line, the piercing and tearing are performed on a straight line.
なお、仮留め部５は、切断の際に粘着テープを制動すると共に、粘着テープのテープロール２から引き出した部分１１の切断後の端末を次回の使用に備えて粘着／仮留めするためのものでもある。従って、剥離が容易であり、且つ使用時の粘着に支障が生じなければ、制動性を高めるために、適宜な凹凸面としたり、あるいは曲面としたりしても良い。 The temporary fastening portion 5 brakes the adhesive tape at the time of cutting, and sticks / temporarily secures the terminal after cutting the portion 11 drawn from the tape roll 2 of the adhesive tape for the next use. But there is. Therefore, if it is easy to peel off and there is no problem in adhesion during use, an appropriate uneven surface or curved surface may be used in order to improve the braking performance.
刃先線８を分断した多数のスリット９の開口幅寸法Ｇは、全てを均一としても良いが、図５に示したように、例えば刃渡り方向の中央側へ行くに連れて徐々に狭くするなど、規則的に（或いは不規則に）変化させるようにしても良い。 The opening width dimension G of the large number of slits 9 obtained by dividing the cutting edge line 8 may be uniform, but as shown in FIG. 5, for example, the width gradually decreases toward the center side in the blade spanning direction, etc. It may be changed regularly (or irregularly).
また互いに隣接するスリット９同士間の間隔寸法（ピッチ）Ｐについても、全てを均一にしても良いが、図６に示したように、例えば刃渡り方向の中央側へ行くに連れて徐々に広くするなど、規則的に（或いは不規則に）変化させるようにしても良い。 Further, the interval dimension (pitch) P between the adjacent slits 9 may be made uniform, but as shown in FIG. 6, for example, it is gradually increased as it goes to the center side in the blade spanning direction. For example, it may be changed regularly (or irregularly).
更に刃先線８が延在する直線に対するスリット９の角度は、直角のみならず、図７に示したように、例えば１１０度（α：鈍角）、或いは８０度（β：鋭角）としても良い。 Furthermore, the angle of the slit 9 with respect to the straight line on which the cutting edge line 8 extends is not limited to a right angle, but may be, for example, 110 degrees (α: obtuse angle) or 80 degrees (β: acute angle) as shown in FIG.
図８に示すように、刃先線８を形成する２つの面Ｈ・Ｖの挟み角γを鋭角にすると、刃先線８並びに刃先頂点１０がより一層鋭利となるので、テープの材質によっては突き破り易さの向上に寄与するものと考えられる。 As shown in FIG. 8, when the sandwiching angle γ between the two surfaces H and V forming the cutting edge line 8 is set to an acute angle, the cutting edge line 8 and the cutting edge vertex 10 become sharper. It is thought that it contributes to the improvement.
切断刃６は、二つの面Ｈ・Ｖが交差する角部の稜線を分断するように形成した上述の形態のみならず、図９に示すように、適宜な厚さの例えばステンレスの板材ＰＬの一方の端縁を櫛歯状に切り込んだ形態でも良い。 The cutting blade 6 is not limited to the above-described form formed so as to divide the ridgeline at the corner where the two surfaces H and V intersect, but as shown in FIG. One end may be cut into a comb shape.
上記したいずれの形態においても、スリット９の位置または形状は、刃渡り方向の中央に対して対称とすることが、左右いずれの方向から切り始めても切断線に差が生じないので、利き手の違いに対応する上に好ましい。なお、図５〜図９に示したスリット９に関する各種の実施形態は、それぞれを単独で実施しても良いが、適宜に組み合わせても良い。 In any of the forms described above, the position or shape of the slit 9 should be symmetric with respect to the center in the blade spanning direction. It is preferable to cope with it. In addition, although various embodiment regarding the slit 9 shown in FIGS. 5-9 may each be implemented independently, you may combine suitably.
次にスリット９の開口幅寸法Gと刃先線８の長さ寸法Ｂとの関係について考察する。
切断刃６に粘着テープを押し付けた際に、粘着テープの幅方向における一方の切断開始側端縁は、スリット９の開口部を臨む位置（図１０−ａ参照）か、刃先線８を臨む位置（図１１参照）のいずれかに位置することとなる。
Next, the relationship between the opening width dimension G of the slit 9 and the length dimension B of the cutting edge line 8 will be considered.
When the adhesive tape is pressed against the cutting blade 6, one cutting start side edge in the width direction of the adhesive tape is a position facing the opening of the slit 9 (see FIG. 10- a) or a position facing the cutting edge line 8. (See FIG. 11 ).
図４に示したように、粘着テープの切断したい箇所を切断刃６で屈折させた状態で、粘着テープを制動した仮留め部５と粘着テープのテープロール２から引き出した部分１１の端末を保持した指との間に、粘着テープの幅方向切断開始側端縁に力が集中する向きの張力を加えて粘着テープを切断刃６に押し付けると、スリット９の開口部に粘着テープの切断開始側端縁が位置していた場合（図１０−ａの状態）、粘着テープは、切断方向にある最初の刃先頂点１０に突き破られ、切断開始側端縁まで引き裂きが伝播しつつ、切断方向（矢印Ｘ）へ向かう刃先線８に沿う切り裂きが開始される。 As shown in FIG. 4, in a state where the portion to be cut of the adhesive tape is refracted by the cutting blade 6, the temporary fastening portion 5 that brakes the adhesive tape and the end of the portion 11 drawn from the tape roll 2 of the adhesive tape are held. When the pressure-sensitive adhesive tape is pressed against the cutting blade 6 by applying tension in the direction in which the force concentrates on the widthwise cutting start side edge of the pressure-sensitive adhesive tape, the adhesive tape is cut into the opening of the slit 9 If the edge was located (the state of FIG. 10 -a), the adhesive tape is pierced in the first edge vertex 10 in the cutting direction, tearing while propagating to the cutting start side edges, cutting direction ( The tearing along the cutting edge line 8 toward the arrow X) is started.
このような態様においては、スリット９の開口幅寸法Ｇが大きく、粘着テープの切断開始側端縁から切断方向の最初にある刃先頂点１０までの距離ｇが大きくなればなるほど、刃先頂点１０による突き破り点から粘着テープの切断開始側端縁までの刃先線８に沿わない引き裂き伝播の距離が長くなる。この開口部分にオーバーハングした部分は、引き裂き伝播の方向性を支配するものがないので、その方向性が定まらず、切断端縁の直線性が損なわれ易くなる（図１０−ｂ参照）。この反対に、粘着テープの切断開始側端縁から最初の刃先頂点１０までの距離ｇが短かすぎると、粘着テープが刃先頂点１０に食い込み難くなり、切り裂きが困難となる。 In such an embodiment, the opening width dimension G of the slit 9 is large, and the greater the distance g from the cutting start side edge of the adhesive tape to the cutting edge vertex 10 at the beginning of the cutting direction, the greater the breakage by the cutting edge vertex 10. The distance of tear propagation not along the cutting edge line 8 from the point to the cutting start side edge of the adhesive tape becomes longer. Overhanging portion to the opening portion, the tear because there is nothing to govern the direction of propagation, the direction is not fixed, the linearity of the cutting edge is easily compromised (see FIG. 10 -b). On the other hand, if the distance g from the cutting start side edge of the adhesive tape to the first blade tip vertex 10 is too short, the adhesive tape will not easily bite into the blade tip vertex 10 and it will be difficult to cut.
図１１に示すように、粘着テープの切断開始側端縁が切断刃６の刃先線８上に位置した場合は、粘着テープの切断開始側端縁から最初の突き破りを行う刃先頂点１０までの刃先線８に当接する部分は、刃先頂点１０が粘着テープを突き破るまで刃先線８に食い込んで引き伸ばされる。ここで刃先線８の長さ寸法Ｂが大きく、粘着テープの切断開始側端縁から最初の突き破りを行う刃先頂点１０までの距離ｂが長くなると、刃先線８に食い込んで引き伸ばされる部分の長さが大きくなるので、これも直線性を損なう要因となり得る。 As shown in FIG. 11, when the cutting start side edge of the adhesive tape is positioned on the cutting edge line 8 of the cutting blade 6, the cutting edge from the cutting start side edge of the adhesive tape to the cutting edge vertex 10 that performs the first piercing. The portion in contact with the line 8 is stretched by biting into the cutting edge line 8 until the cutting edge vertex 10 breaks through the adhesive tape. Here, when the length dimension B of the cutting edge line 8 is large and the distance b from the cutting start side edge of the adhesive tape to the cutting edge vertex 10 that performs the first breakthrough becomes longer, the length of the portion that bites into and extends the cutting edge line 8. Since this increases, this can also be a factor that impairs linearity.
また、図１２に示すように、スリット９の開口部に粘着テープの切断開始側端縁が位置していた場合（図１２−ａの状態）、スリット９の深さ寸法Ｄが大きければ大きいほど、刃先頂点１０による突き破り点から粘着テープの切断開始側端縁までの引き裂き伝播がスリット９の深さ方向（矢印Ｙ）に向かう傾向となるので、これも切断端縁の直線性を損なう要因となり得る。 In addition, as shown in FIG. 12, when the cutting tape side edge of the adhesive tape is located at the opening of the slit 9 (the state of FIG. 12- a), the larger the depth dimension D of the slit 9 is, the larger the depth is. Since the tear propagation from the piercing point by the cutting edge vertex 10 to the cutting start side edge of the adhesive tape tends to go in the depth direction of the slit 9 (arrow Y), this also becomes a factor that impairs the linearity of the cutting edge. obtain.
以上に鑑み、上述したスリット９の開口幅寸法Ｇ、刃先線８の長さ寸法Ｂ、スリット９の深さ寸法Ｄには、適正な値のあることが推測される。このような知見に基づき、本発明カッターによる切断試験を、以下の仕様の市販のテープについて行った。以下、その結果を述べる。
〈ＪＩＳ−Ｚ−０２３７に基づくテープの物理的特性〉
基材材質 ：セルロースアセテートフィルム（マット処理）
粘着剤 ：アクリル系粘着剤
幅 ：１９．１ｍｍ
接着力 ：５．３N／幅
引っ張り強さ：４４．１N／幅（４．５ｋｇ／幅）
伸び ：４０％
厚さ ：０．０６３mm
In view of the above, it is presumed that the above-described opening width dimension G of the slit 9, the length dimension B of the cutting edge line 8, and the depth dimension D of the slit 9 have appropriate values. Based on such knowledge, the cutting test by this invention cutter was done about the commercially available tape of the following specifications. The results are described below.
<Physical characteristics of tape based on JIS-Z-0237>
Base material: Cellulose acetate film (matte treatment)
Adhesive: Acrylic adhesive width: 19.1 mm
Adhesive strength: 5.3 N / width Tensile strength: 44.1 N / width (4.5 kg / width)
Elongation: 40%
Thickness: 0.063mm
このテープの切断予定部に視認性を高めるために油性フエルトペンで予め着色したものを、粘着テープのテープロール２から引き出した部分１１の長さが略一定（切断された粘着テープ片の長さが例えば５cm程度）となるようにし、図４に示した通常使用と同様の要領で切断した。これを複数回行ったものの中から無作為に１つを選び、スキャナで撮像し、拡大した画像を観察した。 The length of the part 11 drawn from the tape roll 2 of the pressure-sensitive adhesive tape, which is pre-colored with an oil-based felt pen in order to enhance the visibility of the portion to be cut of this tape, is substantially constant (the length of the cut pressure-sensitive adhesive tape piece). For example, about 5 cm) and cut in the same manner as the normal use shown in FIG. A random one was selected from those obtained by performing this multiple times, picked up with a scanner, and an enlarged image was observed.
その結果、市販のディスペンサに付設された従来の切断刃の一例（二等辺三角形、歯の高さ：約１．０mm、歯間ピッチ：約１．２７mm）によると、図１３に示すように、切断端縁はジグザグ状となり、山の頂点と谷の底点との距離は約０．８mmであった。これに対し、本発明の切断刃６によれば、スリット９の開口幅寸法Ｇを１．０mm、刃先線８の長さ寸法Ｂを０．９mm、スリット間ピッチＰを１．９mmとした場合、切断端縁の凹凸の頂点と底点との間の距離は約０．４mmであり、従来に比して１／２以下となった（図１４）。 As a result, an example of a conventional cutting blade that is attached to a commercially available dispenser (isosceles triangle, the tooth height: about 1.0 mm, tooth pitch: about 1.27 mm) according to, as shown in FIG. 13, The cut edge was zigzag-shaped, and the distance between the top of the mountain and the bottom of the valley was about 0.8 mm. On the other hand, according to the cutting blade 6 of the present invention, when the opening width G of the slit 9 is 1.0 mm, the length B of the cutting edge 8 is 0.9 mm, and the pitch P between the slits is 1.9 mm. The distance between the top and bottom of the cut edge irregularities was about 0.4 mm, which was ½ or less than that of the prior art (FIG. 14 ).
スリット９の開口幅Ｇが狭くなるのに比例して切断端縁の直線性が高くなり、開口幅寸法Ｇを０．３mm、刃先線８の長さ寸法Ｂを０．９mm、スリット間ピッチＰを１．２mmとしたものでは、切断端縁の凹凸の頂点と底点との間の距離は０．２mm以下と、肉眼では殆ど直線に見えるものとなる（図１５）。しかし開口幅をこれ以下にすると、刃先線８とスリット９とで形成される刃先頂点１０の粘着テープに対する食い込みが悪くなって粘着テープが切断刃６上で滑り気味となる。他方、スリット９の開口幅寸法Ｇを１．３mm、刃先線８の長さ寸法Ｂを０．９mm、スリット間ピッチＰを２．２mmとしたものでは、スリット９の開口部における粘着テープの切り裂きの伝播がスリット９の深さ方向に向かい、切断端縁の凹凸の頂点と底点との間の距離が約０．５mmとなり、切断端縁の直線性が劣化して不連続性が目立ってくる（図１６）。以上に鑑み、スリット９の開口幅寸法Ｇの実用上の適正値は、評価試験に用いた仕様のテープに関しては、０．３〜１．０mmの範囲が妥当であると考えられる。 The linearity of the cutting edge increases in proportion to the opening width G of the slit 9 becoming narrower, the opening width dimension G is 0.3 mm, the length dimension B of the cutting edge line 8 is 0.9 mm, and the pitch P between the slits When the thickness is 1.2 mm, the distance between the top and bottom of the cut-off edge irregularities is 0.2 mm or less, which is almost linear with the naked eye (FIG. 15 ). However, if the opening width is made smaller than this, the biting of the cutting edge vertex 10 formed by the cutting edge line 8 and the slit 9 into the adhesive tape becomes worse, and the adhesive tape becomes slippery on the cutting blade 6. On the other hand, when the opening width G of the slit 9 is 1.3 mm, the length B of the cutting edge 8 is 0.9 mm, and the pitch P between the slits is 2.2 mm, the adhesive tape is torn at the opening of the slit 9. The depth of the slit 9 propagates in the depth direction, the distance between the top and bottom of the cut edge irregularities is about 0.5 mm, and the linearity of the cut edge deteriorates and the discontinuity is conspicuous. Come (Figure 16 ). In view of the above, it is considered that a practically appropriate value of the opening width dimension G of the slit 9 is in a range of 0.3 to 1.0 mm for a tape having a specification used in the evaluation test.
市販の事務用粘着テープの基材材質としては、アセテートの他に、セルロース、ポリプロピレンなどが知られており、その厚さは、０．０５〜０．０６mmの範囲が一般的であるが、本発明のカッター７は、スリット９の開口幅寸法Ｇをテープの材質に合わせて適宜に設定することにより、好適な切断性が得られるものと予想される。 In addition to acetate, cellulose, polypropylene, and the like are known as base materials for commercially available office adhesive tapes, and the thickness is generally in the range of 0.05 to 0.06 mm. The cutter 7 of the invention is expected to obtain a suitable cutting property by appropriately setting the opening width dimension G of the slit 9 according to the material of the tape.
スリット９の形状は、本発明の本質にとって格別に重要なわけではなく、断面形状が矩形をなすものばかりでなく、図１７に示すように半円形（Ｕ字状）をなすもの（ａ、ｂ）、あるいは三角形（Ｖ字状）をなすもの（ｃ、ｄ）等々、種々の形態での実施が可能である。いずれにしても、刃先線８とスリット９との交点に尖った刃先頂点１０が形成されることが必須である。 The shape of the slit 9 is essentially not necessarily particularly important to the present invention, not only those cross section a rectangular, which forms a semi-circular (U-shape) as shown in FIG. 17 (a, b ) Or a triangle (V-shaped) (c, d), etc., can be implemented in various forms. In any case, it is essential that a sharp edge vertex 10 is formed at the intersection of the edge line 8 and the slit 9.
本発明のカッターは、現状のディスペンサのカッター部のみを変更するだけで実施することができ、その使用法も従来のものと変わりが無く、合成樹脂の成形品での実施が可能であり、現状の製造設備の金型の一部を手直しするだけで済むことから、製造コストの増大を招かずに済む。 The cutter of the present invention can be carried out only by changing only the cutter part of the current dispenser, and its usage is the same as the conventional one, and can be carried out with a molded product of synthetic resin. Since it is only necessary to rework a part of the mold of the manufacturing facility, the manufacturing cost does not increase.
１．ディスペンサ
２．テープロール
３．テープロール保持部
４．カッター支持部
５．仮留め部
６．切断刃
７．カッター
８．刃先線
９．スリット
１０．刃先頂点
１１．粘着テープのテープロールから引き出した部分
1. 1. Dispenser 2. Tape roll 3. Tape roll holding unit 4. Cutter support part Temporary fastening part 6. 6. Cutting blade Cutter 8. 8. Cutting edge line Slit 10. Cutting edge vertex 11. The part pulled out from the tape roll of the adhesive tape
Claims (4)
前記切断刃は、前記第１の面と前記第２の面とがなす直線状の稜線と、該第１の面と該第２の面との双方に対して所定の切り込み長さをもって形成されることにより該稜線を分断する複数のスリットとを備え、
前記分断された稜線が、前記切断刃の唯一の刃先線をなすことを特徴とする粘着テープカッター。 The pressure-sensitive adhesive tape is cut by a first surface that doubles as a temporary fixing portion for adhering / temporarily fixing the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape, a second surface that is continuous with an end of the first surface, and a cutting edge line thereof. An adhesive tape cutter having a cutting blade,
The cutting blade, with a linear ridge line that forms the first surface and said second surface, both in pairs to Jo Tokoro cut length between said first surface and said second surface and a plurality of slits for dividing the該稜line by being formed,
The pressure-sensitive adhesive tape cutter, wherein the divided ridge line forms a unique cutting edge line of the cutting blade .
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| JP5269180B2 (en) * | 2008-06-23 | 2013-08-21 | ニチバン株式会社 | Tape dispenser |
| JP5399699B2 (en) * | 2008-06-23 | 2014-01-29 | ニチバン株式会社 | Cutting blade for tape |
| JP5286404B2 (en) * | 2011-05-20 | 2013-09-11 | 山下印刷紙器株式会社 | Cutting blade for food wrap film |
| JP5837840B2 (en) * | 2012-02-09 | 2015-12-24 | 山下印刷紙器株式会社 | Food wrap film storage box |
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