JP2011201634A - Step trace-reducing structure of roll-like object and method of manufacturing roll-like object - Google Patents

Step trace-reducing structure of roll-like object and method of manufacturing roll-like object Download PDF

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JP2011201634A
JP2011201634A JP2010069579A JP2010069579A JP2011201634A JP 2011201634 A JP2011201634 A JP 2011201634A JP 2010069579 A JP2010069579 A JP 2010069579A JP 2010069579 A JP2010069579 A JP 2010069579A JP 2011201634 A JP2011201634 A JP 2011201634A
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core
roll
outer peripheral
peripheral surface
winding
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JP5440312B2 (en
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Shogo Yamamoto
昌吾 山本
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Maxell Sliontec Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a step trace-reducing structure of a roll-like object, capable of substantially completely preventing the occurrence of a step trace, and easy in manufacturing the roll-like object, and to provide a method of manufacturing the roll-like object, easy in manufacturing the roll-like object, and hardly causing the step trace in a belt-like object wound on a core.SOLUTION: A winding starting end part 3 of a single-sided pressure sensitive adhesive tape 2 is stuck and fixed to an outer peripheral surface 1a of the core 1. Then, in the winding starting end part 3, a step 10 equivalent to a tape thickness is formed between an outside surface 2a of the single-sided pressure sensitive adhesive tape 2 and the outer peripheral surface 1a of the core 1. When a liquid or pasty curing-resin is hardened by arranging so as to fill a cross-sectional substantially triangular space formed between an end surface 2b of the winding starting end part 3 and the outer peripheral surface 1a of the core 1, a resin-made step relieving member 5 is formed, and the step 10 is relieved. The roll-like object is formed by multiply winding the single-sided adhesive tape 2 on the core 1 provided with the step reliving member 5.

Description

本発明は、巻芯に帯状物が複数巻重ねて巻き付けられたロール状物において、帯状物の巻き付け始端部に形成される段差に起因して帯状物に生じる段差痕を低減する段差痕低減構造に関する。また、本発明は、巻芯に巻き付けられた帯状物に段差痕が生じにくいロール状物の製造方法に関する。   The present invention relates to a stepped trace reduction structure for reducing a stepped trace generated in a striped product due to a step formed at a winding start end of the striped product in a roll-shaped product wound with a plurality of strips wound around a core. About. The present invention also relates to a method for producing a roll-shaped object in which a step mark is unlikely to be generated in a band-shaped object wound around a core.

一般に粘着テープや接着テープ（以降は、これらを総称してテープと記すこともある）は、巻芯に複数巻重ねて巻き付けられたロール状物として提供されている。テープを巻芯に巻き付ける際には、テープ先端（巻き付け始端部）を巻芯の外周面に貼り付けた後に、巻芯を回転させてテープを巻芯に巻き重ねてロール状物とする。粘着面又は接着面に剥離ライナーを備えるテープの場合は、テープ先端（巻き付け始端部）の剥離ライナーを両面粘着テープ，両面接着テープ，粘着剤，接着剤等により巻芯の外周面に粘着又は接着固定した後に、テープを巻芯に巻き重ねてロール状物とする。   In general, pressure-sensitive adhesive tapes and adhesive tapes (hereinafter, these may be collectively referred to as tapes) are provided as rolls wound around a winding core. When winding the tape around the winding core, the tape tip (winding start end) is attached to the outer peripheral surface of the winding core, and then the winding core is rotated to roll the tape around the winding core to obtain a roll. In the case of a tape with a release liner on the adhesive surface or adhesive surface, stick or adhere the release liner at the tip of the tape (winding start end) to the outer peripheral surface of the core with double-sided adhesive tape, double-sided adhesive tape, adhesive, adhesive, etc. After fixing, the tape is wound around the core to form a roll.

ところが、図６，７に示すように、巻芯に固定された巻き付け始端部において、最内層のテープの外側面と巻芯の外周面との間でテープ厚さ分の段差（両面粘着テープで巻芯にテープを固定した場合は、テープ厚さと両面粘着テープ厚さを合わせた分の段差）が生じるため、この段差の上に巻き重ねられたテープは、段差により変形することとなる。そして、その変形したテープの上に巻き重ねられたテープにも変形が転写するため、巻き始めから数巻〜数十巻にわたってテープに幅方向筋状の歪み（本発明においては、この歪みを段差痕と称す）が生じるという問題があった。テープが厚いほど段差が大きくなるため、厚いテープにおいてはその影響も大きかった。   However, as shown in FIGS. 6 and 7, at the winding start end fixed to the core, a step corresponding to the thickness of the tape between the outer surface of the innermost layer tape and the outer peripheral surface of the core (double-sided adhesive tape is used). When the tape is fixed to the winding core, a step corresponding to the thickness of the tape and the thickness of the double-sided adhesive tape is generated. Therefore, the tape wound on the step is deformed by the step. Since the deformation is also transferred to the tape wound on the deformed tape, the distortion in the width direction is applied to the tape from several to several tens of turns from the start of winding (in the present invention, this distortion is stepped). There has been a problem that this occurs. The thicker the tape, the larger the level difference, so the effect was greater on thicker tapes.

このような段差痕は、巻芯にテープを巻き重ねるにつれて徐々に目立たなくなるものの、段差痕が生じた部分は数メートルから数十メートルにもわたる場合があるため、テープの商品価値を大きく低下させていた。特に、外観や透明性が重視される、基材レス両面透明粘着テープ（透明粘着剤層の両面に剥離ライナーを有するテープ）等の光学用途のテープの場合は、段差痕により透明性や平面性が低下した部分は使用に適さず、廃棄処分されているのが実情であり、廃棄ロスが大きくなる原因となっていた。   Such step marks gradually become inconspicuous as the tape is wound around the core, but the portion where the step marks are generated may extend from several meters to several tens of meters, greatly reducing the commercial value of the tape. It was. In particular, in the case of tapes for optical applications such as baseless double-sided transparent adhesive tapes (tapes having release liners on both sides of the transparent adhesive layer) where appearance and transparency are important, transparency and flatness due to step marks The part where the decrease was not suitable for use and was actually disposed of, which caused a large disposal loss.

このような背景から、段差痕の発生を低減する技術が種々提案されている。例えば、特許文献１〜４には、巻芯の外周面の全面又は一部を発泡体，ゴム，ウレタン樹脂等の弾性体で覆い、その上にテープを巻き付ける技術が提案されている。これらの技術によれば、テープの巻き付け始端部が弾性体内に沈み込み、テープ厚さによる段差が緩和されるため、テープの段差痕が低減する。   Against this background, various techniques for reducing the occurrence of step marks have been proposed. For example, Patent Documents 1 to 4 propose a technique in which the entire or part of the outer peripheral surface of the core is covered with an elastic body such as foam, rubber, urethane resin, and the tape is wound thereon. According to these techniques, the winding start end of the tape sinks into the elastic body, and the level difference due to the tape thickness is alleviated.

また、特許文献５，６には、巻芯の外周面に軸方向に沿う切欠部を設け、この切欠部内に巻き付け始端部を固定してテープを巻き付ける技術が提案されている。この切欠部の深さはテープ厚さとほぼ等しいため、切欠部内に固定された巻き付け始端部の外側面は巻芯の外周面とほぼ面一となる。そのため、巻芯にテープを巻き付けた際に、巻き付け始端部のテープ厚さによる段差がほとんど生じないので、テープの段差痕の発生がほぼ防止される。   Patent Documents 5 and 6 propose a technique in which a notch portion is provided along the axial direction on the outer peripheral surface of the core, and a winding start end portion is fixed in the notch portion to wind the tape. Since the depth of the notch is substantially equal to the tape thickness, the outer surface of the winding start end fixed in the notch is substantially flush with the outer peripheral surface of the core. For this reason, when the tape is wound around the winding core, there is almost no step due to the tape thickness at the winding start end, so that the occurrence of a step mark on the tape is substantially prevented.

特開２００４−３３８８１８号公報JP 2004-338818 A 特開２００３−１４６４９５号公報JP 2003-146495 A 特開２００６−８２９５３号公報JP 2006-82953 A 特開２００５−７５５２１号公報JP-A-2005-75521 特開２００７−１１２６２７号公報JP 2007-112627 A 特開２００７−１１９２３０号公報JP 2007-119230 A

しかしながら、特許文献１〜４に提案の技術では、段差が全く生じないようにすることは困難であるため、段差痕の発生を完全に防止することができない場合があった。一方、特許文献５，６に提案の技術では、巻芯の外周面に設ける切欠部の深さは、巻き付けるテープの厚さに合致している必要があるので、巻き付けるテープの厚さに合う深さの切欠部を有する巻芯を製造する必要があった。また、テープの厚さが異なる種々のロール状物を製造する場合には、切欠部の深さが異なる複数の巻芯を用意する必要があった。さらに、切欠部内にテープの巻き付け始端部を固定する必要があるので、テープの巻き付け始端部を巻芯に固定する際に位置合わせ作業が必要であった。   However, in the techniques proposed in Patent Documents 1 to 4, since it is difficult to prevent the level difference from occurring at all, the generation of the level difference trace may not be completely prevented. On the other hand, in the techniques proposed in Patent Documents 5 and 6, the depth of the cutout portion provided on the outer peripheral surface of the winding core needs to match the thickness of the tape to be wound. It was necessary to manufacture a core having a notch. Further, when manufacturing various rolls having different tape thicknesses, it is necessary to prepare a plurality of winding cores having different notch depths. Furthermore, since it is necessary to fix the winding start end of the tape in the notch, alignment work is required when fixing the winding start end of the tape to the core.

そこで、本発明は、上記のような従来技術が有する問題点を解決し、段差痕の発生をほぼ完全に防止することが可能であるとともに、ロール状物の製造が容易なロール状物の段差痕低減構造を提供することを課題とする。また、巻芯に巻き付けられた帯状物に段差痕が生じにくく、ロール状物の製造が容易なロール状物の製造方法を提供することを併せて課題とする。   Therefore, the present invention solves the problems of the prior art as described above, can almost completely prevent the occurrence of step traces, and is easy to manufacture a roll-like product. It is an object to provide a scar reduction structure. Another object of the present invention is to provide a method for producing a roll-shaped product that is less likely to cause a step mark on a band-shaped material wound around a core and that can be easily produced.

前記課題を解決するため、本発明は次のような構成からなる。すなわち、本発明に係るロール状物の段差痕低減構造は、巻芯の外周面に帯状物が複数巻重ねて巻き付けられてなり、前記帯状物の巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差により、該段差の外側に巻き重ねられた前記帯状物が変形して段差痕が生じ得るロール状物において、前記段差を緩和する段差緩和部材を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記巻き付け始端部の端面に隣接して配したことを特徴とする。   In order to solve the above problems, the present invention has the following configuration. That is, the step scar reduction structure of the roll-shaped object according to the present invention is formed by winding a plurality of belt-shaped objects on the outer peripheral surface of the core, and winding the outer surface of the belt-shaped object to the winding start end of the belt-shaped object. A step mitigating member for mitigating the step in a roll-like material in which a step formed between the outer peripheral surface of the core and the strip wound around the step may be deformed to form a step mark. The winding start end portion is arranged adjacent to the end surface of the winding start end portion so as to substantially fill a space formed between the end surface of the winding start end portion and the outer peripheral surface of the winding core.

このような本発明に係るロール状物の段差痕低減構造においては、前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されていることが好ましい。
また、前記帯状物は粘着テープ又は接着テープであってもよく、その粘着面又は接着面を内側にして前記巻芯に巻き付けられて前記ロール状物が形成されていてもよい。 In such a stepped trace reduction structure for a roll-shaped object according to the present invention, the outer surface of the winding start end of the belt-shaped object and the outer peripheral surface of the core are smoothly passed through the outer surface of the step-relief member. It is preferable that it is connected.
The strip may be a pressure-sensitive adhesive tape or an adhesive tape, and the roll-shaped material may be formed by being wound around the core with the pressure-sensitive adhesive surface or the adhesive surface inside.

さらに、前記帯状物は、粘着面又は接着面に剥離ライナーを備える粘着テープ又は接着テープであってもよく、前記剥離ライナーを内側にして前記巻芯に巻き付けられて前記ロール状物が形成されているとともに、前記巻き付け始端部の前記剥離ライナーが粘着部材又は接着部材を介して前記巻芯の外周面に固定されていてもよい。
前記帯状物が剥離ライナーを備える場合には、前記粘着部材又は前記接着部材の前記巻き付け始端部側に、前記帯状物の外側面と前記巻芯の外周面との間で前記段差が形成されるとともに、その反対側に前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面との間で第二段差が形成されるが、前記段差緩和部材を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記巻き付け始端部の端面に隣接して配するとともに、前記第二段差を緩和する第二段差緩和部材を、前記粘着部材又は前記接着部材の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記粘着部材又は前記接着部材の端面に隣接して配することが好ましい。 Furthermore, the strip may be a pressure-sensitive adhesive tape or adhesive tape having a release liner on the pressure-sensitive adhesive surface or the adhesive surface, and the roll-shaped material is formed by being wound around the core with the release liner inside. In addition, the release liner at the winding start end may be fixed to the outer peripheral surface of the core via an adhesive member or an adhesive member.
When the strip includes a release liner, the step is formed between the outer surface of the strip and the outer peripheral surface of the core on the winding start end side of the adhesive member or the adhesive member. In addition, a second step is formed on the opposite side between the outer surface of the adhesive member or the adhesive member and the outer peripheral surface of the core, and the step reducing member is connected to the end surface of the winding start end portion and the winding surface. A second step relief member that is arranged adjacent to an end surface of the winding start end portion and relaxes the second step so as to substantially fill a space formed between the outer periphery of the winding core and the adhesive member. Or it is preferable to arrange | position adjacent to the end surface of the said adhesion member or the said adhesive member so that the space formed between the end surface of the said adhesive member and the outer peripheral surface of the said core may be substantially satisfy | filled.

前記ロール状物が前記第二段差緩和部材を備える場合には、前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面とが、前記第二段差緩和部材の外側面を介して滑らかに連結されていることが好ましい。
さらに、前記段差緩和部材や前記第二段差緩和部材は、樹脂製とすることができる。この樹脂は、液状又はペースト状の硬化性樹脂であることが好ましく、前記段差緩和部材は、前記硬化性樹脂を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように配した後に硬化させて形成することができる。また、前記第二段差緩和部材は、前記硬化性樹脂を、前記粘着部材又は前記接着部材の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように配した後に硬化させて形成することができる。 When the roll-like object includes the second step reducing member, the outer surface of the pressure-sensitive adhesive member or the adhesive member and the outer peripheral surface of the core are smooth via the outer surface of the second step reducing member. It is preferable that it is connected to.
Furthermore, the level difference reducing member and the second level difference reducing member can be made of resin. This resin is preferably a liquid or paste-like curable resin, and the step reducing member is formed between the end surface of the winding start end portion and the outer peripheral surface of the winding core. It can be formed by being hardened after being arranged so as to substantially fill the space. The second level difference reducing member is cured after the curable resin is disposed so as to substantially fill a space formed between an end surface of the adhesive member or the adhesive member and an outer peripheral surface of the core. Can be formed.

さらに、本発明に係るロール状物の製造方法は、巻芯の外周面に帯状物を複数巻重ねて巻き付けてロール状物を製造するロール状物の製造方法であって、前記帯状物の巻き付け始端部を前記巻芯の外周面に固定する固定工程と、固定された前記巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差を緩和する段差緩和部材を、前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されるように配する段差緩和工程と、前記段差緩和部材が配された前記巻芯に前記帯状物を複数巻重ねて巻き付ける巻き付け工程と、を備えることを特徴とする。   Furthermore, the method for producing a roll-like product according to the present invention is a method for producing a roll-like product by winding a plurality of belt-like products on the outer peripheral surface of the core to produce a roll-like product, and winding the belt-like product A fixing step of fixing the starting end portion to the outer peripheral surface of the core, and a step difference reducing the step formed between the outer surface of the strip and the outer peripheral surface of the core at the fixed winding starting end portion. A step mitigating step in which the member is arranged so that the outer surface of the winding start end of the belt-like object and the outer peripheral surface of the core are smoothly connected via the outer surface of the step mitigating member; and the step mitigation And a winding step of winding a plurality of the belt-like objects around the winding core on which members are arranged.

また、本発明に係るロール状物の製造方法は、巻芯の外周面に帯状物を複数巻重ねて巻き付けてロール状物を製造するロール状物の製造方法であって、前記帯状物の巻き付け始端部を粘着部材又は接着部材を介して前記巻芯の外周面に固定する固定工程と、固定された前記巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差を緩和する段差緩和部材を、前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されるように配するとともに、前記粘着部材又は前記接着部材を挟んで前記段差とは反対側に前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面との間で形成される第二段差を緩和する第二段差緩和部材を、前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面とが、前記第二段差緩和部材の外側面を介して滑らかに連結されるように配する段差緩和工程と、前記段差緩和部材及び前記第二段差緩和部材が配された前記巻芯に前記帯状物を複数巻重ねて巻き付ける巻き付け工程と、を備えることを特徴とする。   The method for producing a roll-like product according to the present invention is a method for producing a roll-like product by winding a plurality of belt-like products on the outer peripheral surface of the core to produce a roll-like product, and winding the belt-like product A fixing step of fixing the start end portion to the outer peripheral surface of the core via an adhesive member or an adhesive member, and forming between the outer surface of the strip and the outer peripheral surface of the core at the fixed winding start end portion A step-reducing member that relieves the step is arranged so that the outer side surface of the winding start end of the strip and the outer peripheral surface of the core are smoothly connected via the outer side surface of the step-reducing member. And a second step formed between the outer surface of the adhesive member or the adhesive member and the outer peripheral surface of the core on the opposite side of the step with the adhesive member or the adhesive member interposed therebetween. The two-level relief member may be the adhesive member or the adhesive portion. A step-relieving step in which the outer surface of the winding core and the outer peripheral surface of the winding core are smoothly connected via the outer surface of the second step-relief member, the step-relief member, and the second step-relief member A winding step of winding a plurality of the belt-like objects around the winding core on which is arranged.

前記段差緩和工程においては、液状又はペースト状の硬化性樹脂を配した後に硬化させることにより、前記段差緩和部材や前記第二段差緩和部材を形成することが好ましい。   In the step relief process, it is preferable to form the step relief member or the second step relief member by providing a curable resin in a liquid or paste form and then curing it.

本発明に係るロール状物の段差痕低減構造によれば、帯状物の段差痕の発生をほぼ完全に防止することが可能であるとともに、ロール状物の製造が容易である。また、本発明に係るロール状物の製造方法によれば、巻芯に巻き付けられた帯状物に段差痕が生じにくく、ロール状物の製造が容易である。   According to the stepped trace reduction structure of the roll-shaped object according to the present invention, it is possible to almost completely prevent the generation of the stepped trace of the band-shaped object, and it is easy to manufacture the roll-shaped object. Moreover, according to the manufacturing method of the roll-shaped object which concerns on this invention, a level | step difference mark is hard to produce in the strip | belt-shaped object wound around the core, and manufacture of a roll-shaped object is easy.

第一実施形態に係る段差痕低減構造を説明するロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped object explaining the level | step difference trace reduction structure which concerns on 1st embodiment. 第二実施形態に係る段差痕低減構造を説明するロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped object explaining the level | step difference trace reduction structure which concerns on 2nd embodiment. 第三実施形態に係る段差痕低減構造を説明するロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped object explaining the level | step difference trace reduction structure which concerns on 3rd embodiment. 第一実施形態に係る段差痕低減構造の変形例を説明するロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped object explaining the modification of the level | step difference trace reduction structure which concerns on 1st embodiment. 第一実施形態に係る段差痕低減構造の別の変形例を説明するロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped object explaining another modification of the level | step difference trace reduction structure which concerns on 1st embodiment. 従来のロール状物のテープに生じた段差痕を説明する側面図である。It is a side view explaining the level | step difference mark which arose in the tape of the conventional roll-shaped thing. 図６のロール状物の要部拡大図である。It is a principal part enlarged view of the roll-shaped thing of FIG.

本発明に係るロール状物の段差痕低減構造及びロール状物の製造方法の実施の形態を、図面を参照しながら詳細に説明する。なお、以下の説明における「外側」及び「内側」とは、巻芯の径方向外方及び径方向内方を意味するものである。また、以降の各図においては、同一又は相当する部分には、同一の符号を付してある。   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a roll-shaped article step-reducing structure and a roll-shaped article manufacturing method according to the present invention will be described in detail with reference to the drawings. In the following description, “outside” and “inside” mean the radially outer side and the radially inner side of the core. In the following drawings, the same or corresponding parts are denoted by the same reference numerals.

〔第一実施形態〕
第一実施形態に係る段差痕低減構造及び該段差痕低減構造を備えるロール状物の製造方法を、図１を参照しながら詳細に説明する。なお、第一実施形態においては、巻芯１に巻き付ける帯状物は、剥離ライナーを備えていない片面粘着テープである。ただし、剥離ライナーを備えていない片面接着テープ，両面接着テープ，片面に剥離ライナーを備えた両面粘着テープ・両面接着テープを用いた場合も、本実施形態と同様の段差痕低減構造及びロール状物の製造方法を適用可能である。 [First embodiment]
The manufacturing method of the roll-shaped object provided with the level | step difference trace reduction structure and this level | step difference trace reduction structure which concern on 1st embodiment is demonstrated in detail, referring FIG. In the first embodiment, the strip wound around the core 1 is a single-sided adhesive tape that does not include a release liner. However, even when a single-sided adhesive tape, a double-sided adhesive tape without a release liner, or a double-sided pressure-sensitive adhesive tape / double-sided adhesive tape with a release liner on one side is used, the step-scratch reducing structure and roll-like material are the same as in this embodiment The manufacturing method can be applied.

図示しない巻き取り装置の軸に円筒状の巻芯１を装着した後に、巻芯１の外周面１ａの任意の部分に、片面粘着テープ２の先端（巻き付け始端部３）を貼り付けて固定した。剥離ライナーを備えていない粘着面を内側にして片面粘着テープ２を巻芯１に巻き付けるので、片面粘着テープ２の巻き付け始端部３を巻芯１に固定するに際しては、両面粘着テープ，両面接着テープ，粘着剤，接着剤等の粘着部材又は接着部材を用いる必要はなく、片面粘着テープ２の粘着面（内側面）の粘着力により巻芯１に固定することができる。   After attaching the cylindrical core 1 to the shaft of a winding device (not shown), the tip of the single-sided adhesive tape 2 (winding start end 3) is attached and fixed to an arbitrary part of the outer peripheral surface 1a of the core 1. . Since the single-sided adhesive tape 2 is wound around the core 1 with the adhesive surface not provided with a release liner inside, when the winding start end 3 of the single-sided adhesive tape 2 is fixed to the core 1, a double-sided adhesive tape or double-sided adhesive tape It is not necessary to use an adhesive member such as an adhesive or an adhesive, or an adhesive member, and it can be fixed to the core 1 by the adhesive force of the adhesive surface (inner side surface) of the single-sided adhesive tape 2.

巻芯１に片面粘着テープ２の巻き付け始端部３を固定すると、巻き付け始端部３において、片面粘着テープ２の外側面２ａと巻芯１の外周面１ａとの間でテープ厚さ分の段差１０が形成される。このまま段差１０の上に片面粘着テープ２を巻き付けると、片面粘着テープ２のうち段差１０の外側に位置する部分が段差１０により変形して、段差痕が生じることとなる。そこで、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たして段差１０を緩和する段差緩和部材５を配し、その上に片面粘着テープ２を巻き付けて、片面粘着テープ２に前述のような段差痕が生じることを防止する。   When the winding start end 3 of the single-sided adhesive tape 2 is fixed to the winding core 1, a step 10 corresponding to the tape thickness is formed between the outer surface 2 a of the single-sided adhesive tape 2 and the outer peripheral surface 1 a of the winding core 1 at the winding start end 3. Is formed. If the single-sided adhesive tape 2 is wound around the step 10 as it is, a portion of the single-sided adhesive tape 2 located outside the step 10 is deformed by the step 10 and a step mark is generated. Therefore, a step reducing member 5 that fills a space with a substantially triangular cross section formed between the end surface 2b of the winding start end portion 3 and the outer peripheral surface 1a of the winding core 1 to relieve the step 10 is disposed on one side. The pressure-sensitive adhesive tape 2 is wound to prevent the above-described step marks from being generated on the single-sided pressure-sensitive adhesive tape 2.

段差緩和部材５は、図１に示すように、断面略三角形状の柱状部材である。この段差緩和部材５を巻き付け始端部３の端面２ｂに隣接して配することにより、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間が段差緩和部材５で満たされるので、段差１０が緩和される。すなわち、片面粘着テープ２の巻き付け始端部３の外側面２ａと巻芯１の外周面１ａとが、段差緩和部材５の外側面５ａを介して滑らかに連結されるため、段差１０が緩和される。   As shown in FIG. 1, the step reducing member 5 is a columnar member having a substantially triangular cross section. A space having a substantially triangular cross section formed between the end surface 2b of the winding start end 3 and the outer peripheral surface 1a of the winding core 1 by disposing the step relaxing member 5 adjacent to the end surface 2b of the winding start end 3. Is filled with the step relaxing member 5, the step 10 is relaxed. That is, since the outer surface 2a of the winding start end 3 of the single-sided adhesive tape 2 and the outer peripheral surface 1a of the core 1 are smoothly connected via the outer surface 5a of the step relaxing member 5, the step 10 is relaxed. .

十分に段差１０を緩和して段差痕が生じることを防止するためには、図１に示すように、片面粘着テープ２の巻き付け始端部３の外側面２ａと段差緩和部材５の外側面５ａとが滑らかに連続し、且つ、巻芯１の外周面１ａと段差緩和部材５の外側面５ａとが滑らかに連続することが好ましい。
巻芯１の外周面１ａと段差緩和部材５の外側面５ａとができるだけ滑らかに連続するようにするためには、段差緩和部材５は巻き付け始端部３からできるだけ離れた位置まで延びていることが好ましく、図１で言えば、できるだけ左下方に延びていることが好ましい。ただし、図４に示すように、巻き付け始端部３の外側の角部２ｃを通り巻芯１の外周面１ａと接する接線（図４では破線で示してある）と、巻芯１の外周面１ａとの接点の位置まで延びていれば十分である。 In order to sufficiently relax the step 10 and prevent the formation of a step mark, as shown in FIG. 1, the outer surface 2 a of the winding start end 3 of the single-sided adhesive tape 2 and the outer surface 5 a of the step relaxing member 5 It is preferable that the outer peripheral surface 1a of the core 1 and the outer surface 5a of the step reducing member 5 are smoothly continuous.
In order to make the outer peripheral surface 1a of the winding core 1 and the outer surface 5a of the step reducing member 5 continue as smoothly as possible, the step reducing member 5 should extend as far as possible from the winding start end 3. Preferably, as shown in FIG. 1, it is preferable to extend to the lower left as much as possible. However, as shown in FIG. 4, a tangent line (shown by a broken line in FIG. 4) that passes through the outer corner 2 c of the winding start end 3 and contacts the outer peripheral surface 1 a of the core 1, and the outer peripheral surface 1 a of the core 1. It is sufficient if it extends to the position of the contact point.

段差緩和部材５の外側面５ａは、図１に示すように、円弧面（断面円弧状の曲面）等の曲面が好ましいが、平面でもよい。すなわち、図４では破線で示される平面でもよい。また、図１，４に示すように、外側に向かって凸状の曲面が好ましいが、逆に凹状の曲面でもよい。
また、片面粘着テープ２の巻き付け始端部３の外側面２ａと段差緩和部材５の外側面５ａとができるだけ滑らかに連続するようにするためには、両面２ａ，５ａを面一とすることが好ましいが、図５に示すように、段差緩和部材５が巻き付け始端部３の外側の角部２ｃを越えて巻き付け始端部３の外側面２ａを覆うように延びていてもよい。 As shown in FIG. 1, the outer surface 5 a of the step reducing member 5 is preferably a curved surface such as an arc surface (curved surface having a circular arc cross section), but may be a flat surface. That is, it may be a plane indicated by a broken line in FIG. Moreover, as shown in FIGS. 1 and 4, a convex curved surface is preferable toward the outside, but a concave curved surface may be used.
Moreover, in order to make the outer surface 2a of the winding start end 3 of the single-sided adhesive tape 2 and the outer surface 5a of the step reducing member 5 continue as smoothly as possible, it is preferable that both surfaces 2a and 5a are flush with each other. However, as shown in FIG. 5, the step reducing member 5 may extend so as to cover the outer surface 2 a of the winding start end portion 3 beyond the corner portion 2 c outside the winding start end portion 3.

このような段差緩和部材５は、樹脂，金属，セラミックス等からなる素材を必要な形状に加工して得ることができる。必要な形状に加工した段差緩和部材５を巻芯１上に配してもよいが、この方法では、段差緩和部材５の製造に手数や時間を要するとともに、正確な形状に加工することに困難性がある。液状又はペースト状の硬化性樹脂を用いて段差緩和部材５を製造すれば、上記のような不都合が生じることがない。   Such a step reducing member 5 can be obtained by processing a material made of resin, metal, ceramics or the like into a necessary shape. The step relief member 5 processed into a necessary shape may be disposed on the core 1, but this method requires time and effort to manufacture the step relief member 5 and is difficult to process into an accurate shape. There is sex. If the level | step difference mitigation member 5 is manufactured using liquid or paste-like curable resin, the above problems will not arise.

すなわち、液状又はペースト状の硬化性樹脂を、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たすように配し、曲面部分を有するヘラや形状可変型のヘラを用いて、余分な硬化性樹脂を取り除きつつ形状を整えて、巻芯１の外周面１ａと段差緩和部材５の外側面５ａとが硬化性樹脂によって滑らかに連続するように成形する。この硬化性樹脂は、熱，光（紫外線・電子線等の放射線を含む），水分，時間等により硬化する性質を有しているため、その硬化方式に従って硬化させれば、樹脂製の段差緩和部材５が得られ、巻芯１上に適切に配される。   That is, the liquid or paste-like curable resin is arranged so as to fill a space having a substantially triangular cross section formed between the end surface 2b of the winding start end portion 3 and the outer peripheral surface 1a of the core 1, and the curved surface portion is arranged. The outer peripheral surface 1a of the core 1 and the outer surface 5a of the step-relief member 5 are smoothly continuous with the curable resin by removing the excess curable resin and using the spatula or the variable shape type spatula. To be molded. Since this curable resin has the property of being cured by heat, light (including radiation such as ultraviolet rays and electron beams), moisture, time, etc., if it is cured according to the curing method, the step difference made of the resin is reduced. A member 5 is obtained and properly arranged on the core 1.

例えば、硬化性樹脂が熱硬化性樹脂であれば、液状又はペースト状の熱硬化性樹脂を巻芯１上に配した後に、熱硬化性樹脂の硬化温度以上に加熱すれば、熱硬化性樹脂を硬化させて段差緩和部材５を得ることができる。ただし、熱により片面粘着テープ２に悪影響が出るおそれがあることや、硬化作業の容易性や効率性を考えると、瞬時に硬化が可能な紫外線硬化性樹脂等の光硬化性樹脂（電子線等の放射線硬化性樹脂を含む）を用いることがより好ましい。また、硬化性樹脂の代わりに、硬化性エラストマーを用いてもよい。   For example, if the curable resin is a thermosetting resin, a liquid or paste-like thermosetting resin is disposed on the core 1 and then heated to a temperature higher than the curing temperature of the thermosetting resin. Can be cured to obtain the step alleviating member 5. However, in consideration of the possibility that the single-sided adhesive tape 2 may be adversely affected by heat and the ease and efficiency of the curing operation, a photocurable resin (such as an electron beam) that can be cured instantaneously It is more preferable to use a radiation curable resin. A curable elastomer may be used instead of the curable resin.

さらに、ホットメルト樹脂等の熱可塑性樹脂を用いることも可能である。すなわち、加熱して液状とした熱可塑性樹脂を、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たすように配して、前述と同様にヘラを用いて成形した後に冷却すると、液状の熱可塑性樹脂が固化して段差緩和部材５が得られ、巻芯１上に適切に配される。   Furthermore, it is also possible to use a thermoplastic resin such as a hot melt resin. That is, the thermoplastic resin heated to be liquid is arranged so as to fill a space having a substantially triangular cross section formed between the end surface 2b of the winding start end portion 3 and the outer peripheral surface 1a of the winding core 1, When it is molded and then cooled using a spatula, the liquid thermoplastic resin is solidified to obtain the step-reducing member 5 and is appropriately disposed on the core 1.

ただし、液状又はペースト状の硬化性樹脂や硬化性エラストマーは、揮発成分（例えば水や有機溶媒）を含んでおらず、不揮発成分（樹脂，充填材，添加剤）のみで構成されていることが好ましい。揮発成分が含まれていると、揮発成分の揮発により段差緩和部材５も体積が収縮するため、巻き付け始端部３の外側面２ａと段差緩和部材５の外側面５ａ、及び、巻芯１の外周面１ａと段差緩和部材５の外側面５ａが、それぞれ滑らかに連続しなくなるおそれがある。その結果、段差１０の緩和が不十分となって、段差痕が生じるおそれがある。   However, the liquid or paste-like curable resin or curable elastomer does not contain a volatile component (for example, water or an organic solvent) and is composed only of non-volatile components (resin, filler, additive). preferable. If the volatile component is contained, the volume of the step reducing member 5 contracts due to the volatilization of the volatile component, so the outer surface 2 a of the winding start end 3, the outer surface 5 a of the step reducing member 5, and the outer periphery of the core 1. There is a possibility that the surface 1a and the outer side surface 5a of the step reducing member 5 may not be smoothly connected to each other. As a result, the relief of the step 10 becomes insufficient, and a step mark may be generated.

上記のようにして段差緩和部材５を配したら、巻き取り張力及び巻き取り速度を所望の値に設定して、巻き取り装置の軸を回転させながら、片面粘着テープ２を巻芯１に複数巻重ねて巻き付けてロール状物とした。巻き付ける片面粘着テープ２の長さは特に限定されるものではないが、例えば１００ｍである。
巻き付けが終了したロール状物から片面粘着テープ２を引き出して、その外観を目視にて観察したところ、段差痕はほぼ発生していなかった。よって、この片面粘着テープ２は品質が高く、貼り合わせにおいて不具合が生じにくい。また、段差痕が生じている部分は使用できず廃棄されるような用途においても、廃棄する部分がほとんどないので、廃棄ロスが極めて少なく経済的である。さらに、段差痕がほとんどないため、外観，透明性，平面性が特に重視される光学用途の粘着テープとして好適である。例えば、液晶パネル等の光学機器に使用される光学用粘着テープとして好適である。 When the step reducing member 5 is arranged as described above, the winding tension and the winding speed are set to desired values, and the single-sided adhesive tape 2 is wound around the winding core 1 while rotating the shaft of the winding device. A roll-shaped product was obtained by winding it repeatedly. Although the length of the single-sided adhesive tape 2 to wind is not specifically limited, For example, it is 100 m.
When the single-sided pressure-sensitive adhesive tape 2 was pulled out from the roll-like material after winding and the appearance was visually observed, almost no step marks were generated. Therefore, this single-sided pressure-sensitive adhesive tape 2 has high quality and is less likely to cause problems in bonding. Further, even in an application where the portion where the step mark is generated cannot be used and is discarded, there is almost no portion to be discarded, so that the disposal loss is extremely small and economical. Furthermore, since there are almost no step marks, it is suitable as an adhesive tape for optical applications in which appearance, transparency and flatness are particularly important. For example, it is suitable as an optical pressure-sensitive adhesive tape used for optical equipment such as a liquid crystal panel.

さらに、片面粘着テープ２の厚さ等の差異に応じて異なる巻芯１を複数用意する必要が無く、どのような粘着テープであっても全く同様の手法で、段差痕が生じないようにロール状物を製造することができる。さらに、片面粘着テープ２の巻き付け始端部３は、巻芯１の外周面１ａのどの部分に固定しても差し支えないので、巻き付け始端部３を巻芯１に固定する際に位置合わせ作業が不要である。よって、ロール状物の製造が容易である。   Further, it is not necessary to prepare a plurality of different cores 1 according to the difference in thickness of the single-sided adhesive tape 2, and rolls so as not to cause step marks with any adhesive tape in exactly the same manner. A product can be produced. Further, since the winding start end 3 of the single-sided adhesive tape 2 can be fixed to any part of the outer peripheral surface 1a of the core 1, no alignment work is required when fixing the winding start end 3 to the core 1. It is. Therefore, manufacture of a roll-shaped object is easy.

〔第二実施形態〕
第二実施形態に係る段差痕低減構造及び該段差痕低減構造を備えるロール状物の製造方法を、図２を参照しながら詳細に説明する。なお、第二実施形態に係る段差痕低減構造及び該段差痕低減構造を備えるロール状物の製造方法の構成及び作用・効果は、第一実施形態とほぼ同様であるので、異なる部分のみ説明し、同様の部分の説明は省略する。
第二実施形態においては、巻芯１に巻き付ける帯状物は、剥離ライナーを備える片面粘着テープである。ただし、剥離ライナーを備える片面接着テープや、少なくとも内側面に剥離ライナーを備える両面粘着テープ・両面接着テープを用いた場合も、本実施形態と同様の段差痕低減構造及びロール状物の製造方法を適用可能である。特に、粘着剤層、剥離ライナーの厚さが比較的厚い（例えば、粘着剤層の厚さ：２５〜２５０μｍ、剥離ライナーの厚さ：２５〜１２５μｍ）、粘着剤層の両面に剥離ライナーを有する基材レス両面透明粘着テープのロール状物の製造方法としては好適である。さらに、粘着面や接着面を備えない単なるフィルム・紙基材等や、粘着剤や接着剤とは異なる他の機能性材料が膜状に塗工されたフィルム・紙基材等を、帯状物として用いた場合も適用可能である。 [Second Embodiment]
The manufacturing method of the roll-shaped object provided with the level | step difference trace reduction structure which concerns on 2nd embodiment, and this level | step trace reduction structure is demonstrated in detail, referring FIG. In addition, since the structure and operation / effect of the step trace reducing structure according to the second embodiment and the manufacturing method of the roll-like object provided with the step trace reducing structure are substantially the same as those in the first embodiment, only different portions will be described. Description of similar parts is omitted.
In the second embodiment, the strip wound around the core 1 is a single-sided adhesive tape including a release liner. However, even when using a single-sided adhesive tape with a release liner, or a double-sided pressure-sensitive adhesive tape or double-sided adhesive tape with a release liner at least on the inner surface, the same step scar reduction structure and roll-like manufacturing method as in this embodiment Applicable. In particular, the thickness of the pressure-sensitive adhesive layer and the release liner is relatively thick (for example, the thickness of the pressure-sensitive adhesive layer: 25 to 250 μm, the thickness of the release liner: 25 to 125 μm), and the release liner is provided on both sides of the pressure-sensitive adhesive layer. It is suitable as a method for producing a roll of a substrate-less double-sided transparent adhesive tape. In addition, a simple film / paper substrate that does not have an adhesive surface or adhesive surface, or a film / paper substrate that is coated with other functional materials different from adhesives or adhesives in the form of a film It is also applicable when used as.

図示しない巻き取り装置の軸に円筒状の巻芯１を装着した後に、巻芯１の外周面１ａの任意の部分に、片面粘着テープ２の先端（巻き付け始端部３）を貼り付けて固定した。剥離ライナーを備える粘着面を内側にして片面粘着テープ２を巻芯１に巻き付けるので、両面粘着テープ７を用いて、片面粘着テープ２の巻き付け始端部３を巻芯１に固定した。なお、両面粘着テープ７の代わりに両面接着テープを用いてもよい。   After attaching the cylindrical core 1 to the shaft of a winding device (not shown), the tip of the single-sided adhesive tape 2 (winding start end 3) is attached and fixed to an arbitrary part of the outer peripheral surface 1a of the core 1. . Since the single-sided adhesive tape 2 is wound around the core 1 with the adhesive surface having the release liner inside, the winding start end 3 of the single-sided adhesive tape 2 is fixed to the core 1 using the double-sided adhesive tape 7. A double-sided adhesive tape may be used instead of the double-sided pressure-sensitive adhesive tape 7.

巻芯１に片面粘着テープ２の巻き付け始端部３を固定すると、巻き付け始端部３において、片面粘着テープ３の外側面２ａと巻芯１の外周面１ａとの間で、片面粘着テープ２の厚さと両面粘着テープ７の厚さの合計分の段差１０が形成される。そこで、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たして段差１０を緩和する段差緩和部材５を配した。そして、その上に片面粘着テープ２を巻き付けて、片面粘着テープ２に段差痕が生じることを防止した。
段差緩和部材５については、第一実施形態の場合と全く同様であるので、その詳しい説明は省略するが、第二実施形態の場合も第一実施形態と同様に、段差緩和部材５の形状を図４，５に示すようにしてもよい。 When the winding start end 3 of the single-sided adhesive tape 2 is fixed to the core 1, the thickness of the single-sided adhesive tape 2 is between the outer surface 2 a of the single-sided adhesive tape 3 and the outer peripheral surface 1 a of the core 1 at the winding start end 3. And a step 10 corresponding to the total thickness of the double-sided pressure-sensitive adhesive tape 7 is formed. Therefore, the step relief member 5 that fills the substantially triangular space formed between the end surface 2b of the winding start end portion 3 and the outer peripheral surface 1a of the core 1 and relaxes the step 10 is disposed. And the single-sided adhesive tape 2 was wound around it, and the single-sided adhesive tape 2 was prevented from producing a step mark.
The step reducing member 5 is exactly the same as in the case of the first embodiment, and a detailed description thereof is omitted. However, in the case of the second embodiment, the shape of the step reducing member 5 is the same as in the first embodiment. 4 and 5 may be used.

〔第三実施形態〕
第三実施形態に係る段差痕低減構造及び該段差痕低減構造を備えるロール状物の製造方法を、図３を参照しながら詳細に説明する。なお、第三実施形態に係る段差痕低減構造及び該段差痕低減構造を備えるロール状物の製造方法の構成及び作用・効果は、第二実施形態とほぼ同様であるので、異なる部分のみ説明し、同様の部分の説明は省略する。 [Third embodiment]
A stepped trace reducing structure according to the third embodiment and a method of manufacturing a roll-like object provided with the stepped trace reduced structure will be described in detail with reference to FIG. In addition, since the structure and the operation / effect of the manufacturing method of the stepped trace reducing structure and the stepped trace reducing structure according to the third embodiment are almost the same as those of the second embodiment, only different parts will be described. Description of similar parts is omitted.

第三実施形態において巻芯１に巻き付ける帯状物は、第二実施形態と同様である。巻芯１に両面粘着テープ７を介して片面粘着テープ２の巻き付け始端部３を固定すると、両面粘着テープ７の巻き付け始端部側（図３においては両面粘着テープ７の左側）に、片面粘着テープ２の外側面２ａと巻芯１の外周面１ａとの間で、片面粘着テープ２の厚さと両面粘着テープ７の厚さの合計分の段差１０が形成される。さらに、両面粘着テープ７を挟んで段差１０とは反対側（図３においては両面粘着テープ７の右側）に両面粘着テープ７の外側面７ａと巻芯１の外周面１ａとの間で、両面粘着テープ７の厚さ分の第二段差１１が形成される。   In the third embodiment, the strip wound around the core 1 is the same as in the second embodiment. When the winding start end 3 of the single-sided adhesive tape 2 is fixed to the winding core 1 via the double-sided adhesive tape 7, the single-sided adhesive tape is placed on the winding start end side of the double-sided adhesive tape 7 (left side of the double-sided adhesive tape 7 in FIG. 3). A step 10 corresponding to the sum of the thickness of the single-sided adhesive tape 2 and the thickness of the double-sided adhesive tape 7 is formed between the outer side surface 2 a of the core 2 and the outer peripheral surface 1 a of the core 1. Further, on both sides of the double-sided pressure-sensitive adhesive tape 7 on the side opposite to the step 10 (on the right side of the double-sided pressure-sensitive adhesive tape 7 in FIG. 3), the double-sided adhesive tape 7 has a double-sided surface. A second step 11 corresponding to the thickness of the adhesive tape 7 is formed.

そこで、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たして段差１０を緩和する段差緩和部材５を配するとともに、両面粘着テープ７の端面７ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間を満たして第二段差１１を緩和する第二段差緩和部材８を配し、その上に片面粘着テープ２を巻き付けて、片面粘着テープ２に段差痕が生じることを防止した。   Therefore, a step relief member 5 that fills a substantially triangular space formed between the end surface 2b of the winding start end portion 3 and the outer peripheral surface 1a of the core 1 and relaxes the step 10, and a double-sided adhesive tape 7 is provided with a second step relief member 8 that fills a space with a substantially triangular cross section formed between the end surface 7b of the core 7 and the outer peripheral surface 1a of the core 1 and relaxes the second step 11, and has a single-sided adhesive thereon. The tape 2 was wound to prevent a step mark from being generated on the single-sided adhesive tape 2.

段差緩和部材５については、第二実施形態の場合と全く同様であるので、その詳しい説明は省略するが、第三実施形態の場合も第二実施形態と同様に、段差緩和部材５の形状を図４，５に示すようにしてもよい。また、第二段差緩和部材８については、段差緩和部材５の場合と全く同様にして形成することができる。すなわち、断面略三角形状の柱状部材を、両面粘着テープ７の端面７ｂに隣接して配することにより、両面粘着テープ７の端面７ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間が第二段差緩和部材８で満たされるので、第二段差１１が緩和される。すなわち、両面粘着テープ７の外側面７ａと巻芯１の外周面１ａとが、第二段差緩和部材８の外側面８ａを介して滑らかに連結されるため、第二段差１１が緩和される。   The step reducing member 5 is exactly the same as in the case of the second embodiment, and a detailed description thereof is omitted. However, in the case of the third embodiment, the shape of the step reducing member 5 is the same as in the second embodiment. 4 and 5 may be used. Further, the second step reducing member 8 can be formed in the same manner as the step reducing member 5. That is, a cross-section formed between the end surface 7 b of the double-sided pressure-sensitive adhesive tape 7 and the outer peripheral surface 1 a of the core 1 by disposing a columnar member having a substantially triangular cross section adjacent to the end surface 7 b of the double-sided pressure-sensitive adhesive tape 7. Since the substantially triangular space is filled with the second level difference reducing member 8, the second level difference 11 is reduced. That is, since the outer side surface 7a of the double-sided pressure-sensitive adhesive tape 7 and the outer peripheral surface 1a of the core 1 are smoothly connected via the outer side surface 8a of the second level difference reducing member 8, the second level difference 11 is relaxed.

十分に第二段差１１を緩和して段差痕が生じることを防止するためには、図３に示すように、両面粘着テープ７の外側面７ａと第二段差緩和部材８の外側面８ａとが滑らかに連続し、且つ、巻芯１の外周面１ａと第二段差緩和部材８の外側面８ａとが滑らかに連続することが好ましい。
巻芯１の外周面１ａと第二段差緩和部材８の外側面８ａとができるだけ滑らかに連続するようにするためには、第二段差緩和部材８は両面粘着テープ７の端面７ｂからできるだけ離れた位置まで延びていることが好ましく、図３で言えば、できるだけ右下方に延びていることが好ましい。ただし、段差緩和部材５の場合と同様に、両面粘着テープ７の端部の外側の角部７ｃを通り巻芯１の外周面１ａと接する接線と、巻芯１の外周面１ａとの接点の位置まで延びていれば十分である。 In order to sufficiently relax the second step 11 and prevent the formation of a step mark, as shown in FIG. 3, the outer surface 7a of the double-sided pressure-sensitive adhesive tape 7 and the outer surface 8a of the second step-relief member 8 are It is preferable that the outer peripheral surface 1a of the core 1 and the outer side surface 8a of the second step relief member 8 are smoothly continuous.
In order to make the outer peripheral surface 1a of the winding core 1 and the outer surface 8a of the second level difference reducing member 8 continue as smoothly as possible, the second level difference reducing member 8 is separated from the end surface 7b of the double-sided pressure-sensitive adhesive tape 7 as much as possible. It is preferable to extend to a position, and it is preferable to extend to the lower right as much as possible in FIG. However, as in the case of the step reducing member 5, the tangent line that contacts the outer peripheral surface 1a of the core 1 through the corner 7c outside the end of the double-sided adhesive tape 7 and the contact point between the outer peripheral surface 1a of the core 1 and It only needs to extend to the position.

第二段差緩和部材８の外側面８ａは、段差緩和部材５の場合と同様に、円弧面（断面円弧状の曲面）等の曲面が好ましいが、平面でもよい。また、外側に向かって凸状の曲面が好ましいが、逆に凹状の曲面でもよい。
また、両面粘着テープ７の外側面７ａと第二段差緩和部材８の外側面８ａとができるだけ滑らかに連続するようにするためには、両面７ａ，８ａを面一とすることが好ましいが、段差緩和部材５の場合と同様に、第二段差緩和部材８が両面粘着テープ７の端部の外側の角部７ｃを越えて両面粘着テープ７の外側面７ａを覆うように延びていてもよい。 The outer surface 8a of the second level difference mitigating member 8 is preferably a curved surface such as an arc surface (curved surface having an arcuate cross section) as in the case of the level difference mitigating member 5, but may be a flat surface. Moreover, although a convex curved surface is preferable toward the outer side, a concave curved surface may be used conversely.
In order to make the outer surface 7a of the double-sided pressure-sensitive adhesive tape 7 and the outer surface 8a of the second level difference mitigating member 8 continue as smoothly as possible, it is preferable that the both surfaces 7a and 8a are flush with each other. Similarly to the case of the relaxing member 5, the second step reducing member 8 may extend so as to cover the outer surface 7 a of the double-sided pressure-sensitive adhesive tape 7 beyond the corner 7 c outside the end of the double-sided pressure-sensitive adhesive tape 7.

このような第二段差緩和部材８は、樹脂，金属，セラミックス等からなる素材を必要な形状に加工して得ることができる。必要な形状に加工した第二段差緩和部材８を巻芯１上に配してもよいが、段差緩和部材５の場合と同様に、液状又はペースト状の硬化性樹脂を用いて第二段差緩和部材８を製造するとよい。硬化性樹脂を用いて第二段差緩和部材８を製造する方法は、段差緩和部材５の場合と同様であるので、その説明は省略する。   Such a second level | step difference mitigation member 8 can be obtained by processing the raw material which consists of resin, a metal, ceramics, etc. into a required shape. The second step relief member 8 processed into a necessary shape may be disposed on the core 1, but as with the step relief member 5, the second step relief is made using a liquid or paste-like curable resin. The member 8 may be manufactured. Since the method of manufacturing the second level difference mitigating member 8 using the curable resin is the same as that of the level difference mitigating member 5, the description thereof is omitted.

上記のようにして段差緩和部材５及び第二段差緩和部材８を配したら、巻き取り張力及び巻き取り速度を所望の値に設定して、巻き取り装置の軸を回転させながら、片面粘着テープ２を巻芯１に複数巻重ねて巻き付けてロール状物とした。
巻き付けが終了したロール状物から片面粘着テープ２を引き出して、その外観を目視にて観察した。第二段差１１を緩和するための対策が施されていない第二実施形態に対して、第三実施形態においては、第二段差１１を緩和するための対策が上記のように施されているので、段差痕は第二実施形態よりもさらに軽減されており、ほぼ発生しなかった。 If the level | step difference mitigation member 5 and the 2nd level | step difference mitigation member 8 are arrange | positioned as mentioned above, the single-sided adhesive tape 2 is set, setting a winding tension | tensile_strength and winding speed to a desired value, and rotating the axis | shaft of a winding apparatus. A plurality of rolls were wound around the core 1 in a roll form.
The single-sided pressure-sensitive adhesive tape 2 was pulled out from the roll-like material after winding, and the appearance was visually observed. In contrast to the second embodiment in which measures for mitigating the second step 11 are not taken, in the third embodiment, measures for mitigating the second step 11 are taken as described above. The step marks are further reduced as compared with the second embodiment, and hardly occur.

なお、上記の各実施形態は本発明の一例を示したものであって、本発明は第一〜第三実施形態やその変形例に限定されるものではない。
例えば、第一〜第三実施形態においては、段差緩和部材５及び第二段差緩和部材８を断面略三角形状の柱状部材として、巻き付け始端部３の端面２ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間の全部、及び、両面粘着テープ７の端面７ｂと巻芯１の外周面１ａとの間に形成された断面略三角形状の空間の全部を満たしていたが、これら空間の一部を満たすようにしても、段差１０及び第二段差１１を緩和して段差痕を低減することが可能である。例えば、段差緩和部材５及び第二段差緩和部材８を断面円形又は断面楕円形の柱状部材として、前記空間の一部を満たすようにすれば、段差痕を低減することが可能である。
また、第二及び第三本実施形態においては、剥離ライナーを備える粘着面を内側にして片面粘着テープ２を巻芯１に巻き付けたが、片面粘着テープ２の基材を内側にして巻芯１に巻き付けてもよく、その場合も全く同様に段差緩和部材５や第二段差緩和部材８を配すればよい。 In addition, each said embodiment showed an example of this invention, Comprising: This invention is not limited to 1st-3rd embodiment and its modification.
For example, in 1st-3rd embodiment, the level | step difference mitigation member 5 and the 2nd level | step difference mitigation member 8 are made into the columnar member of a cross-sectional substantially triangular shape, and the end surface 2b of the winding start end part 3 and the outer peripheral surface 1a of the core 1 are comprised. The entire space having a substantially triangular cross section formed therebetween and the space having a substantially triangular cross section formed between the end surface 7b of the double-sided pressure-sensitive adhesive tape 7 and the outer peripheral surface 1a of the core 1 were satisfied. However, even if a part of these spaces is filled, the step 10 and the second step 11 can be relaxed to reduce the step marks. For example, if the step relief member 5 and the second step relief member 8 are columnar members having a circular cross section or an elliptical cross section so as to fill a part of the space, it is possible to reduce the step marks.
Moreover, in 2nd and 3rd this embodiment, although the single-sided adhesive tape 2 was wound around the core 1 with the adhesive surface provided with a peeling liner inside, the core 1 was set with the base material of the single-sided adhesive tape 2 inside. In that case, the step-relief member 5 and the second step-relief member 8 may be disposed in exactly the same manner.

さらに、第一〜第三実施形態において使用する粘着テープ２（又は接着テープ）の幅、厚さ、基材の材質、基材粘着面側に塗布された粘着剤（又は基材接着面側に塗布された接着剤）、剥離ライナーの種類は、特に限定されるものではなく、一般的なものを問題なく採用可能である。
粘着テープ２の基材の材質の例としては、樹脂，紙，布，金属箔等があげられる。このうち樹脂としては、ポリオレフィン系樹脂（例えばポリエチレン，ポリプロピレン）、ポリスチレン樹脂、ポリ塩化ビニル樹脂、ポリエステル樹脂（例えばポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート）、ポリウレタン樹脂，ポリノルボルネン樹脂、ポリアミド樹脂、ポリイミド樹脂、アクリル樹脂、ポリケトン樹脂、ポリフェニレンオキシド樹脂、ポリフェニレンサルファイド樹脂、ポリスルホン樹脂、ポリカーボネート樹脂、フェノール樹脂、ユリア樹脂、メラミン樹脂、フッ素樹脂、ＡＳ樹脂、ＡＢＳ樹脂等があげられる。これらの樹脂のうち１種を単独で使用してもよいし、２種以上を混合して使用してもよい。また、樹脂中に粉末，繊維等のフィラーが混合された樹脂組成物でもよい。また、ポリウレタン発泡体やエラストマー発泡体等の発泡体樹脂からなるシートあるいはフィルム等も基材として使用できる。
なお、基材レス両面テープの場合は、片方の剥離ライナーを基材の替わりとして使用する。すなわち、片方の剥離ライナーの剥離処理面側に粘着剤を塗工し、もう一方の剥離ライナーの剥離処理面側を粘着剤面に転写ラミネートする。 Further, the width and thickness of the pressure-sensitive adhesive tape 2 (or adhesive tape) used in the first to third embodiments, the material of the base material, the pressure-sensitive adhesive applied to the base-material adhesive surface side (or the base-material adhesive surface side) The kind of the applied adhesive) and the release liner are not particularly limited, and general ones can be employed without any problem.
Examples of the material of the base material of the adhesive tape 2 include resin, paper, cloth, and metal foil. Among these, polyolefin resins (for example, polyethylene, polypropylene), polystyrene resins, polyvinyl chloride resins, polyester resins (for example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate), polyurethane resins, polynorbornene resins, polyamide resins, Polyimide resin, acrylic resin, polyketone resin, polyphenylene oxide resin, polyphenylene sulfide resin, polysulfone resin, polycarbonate resin, phenol resin, urea resin, melamine resin, fluororesin, AS resin, ABS resin and the like can be mentioned. Among these resins, one kind may be used alone, or two or more kinds may be mixed and used. Moreover, the resin composition in which fillers, such as powder and a fiber, were mixed in resin may be sufficient. A sheet or film made of a foam resin such as polyurethane foam or elastomer foam can also be used as a substrate.
In addition, in the case of a substrate-less double-sided tape, one release liner is used as a substitute for the substrate. That is, the pressure-sensitive adhesive is applied to the release treatment surface side of one release liner, and the release treatment surface side of the other release liner is transferred and laminated to the pressure-sensitive adhesive surface.

また、巻芯１の形状，サイズ，材質についても、特に限定されるものではなく、一般的な巻芯を問題なく採用可能である。形状としては、管状や円柱状があげられ、材質としては、例えば金属（鉄，アルミニウム，ステンレス鋼等），樹脂（ポリエチレン・ポリプロピレン等のポリオレフィン系樹脂，ＡＢＳ樹脂やベークライト樹脂等），紙等があげられる。また、樹脂を含浸した紙があげられる。   Further, the shape, size, and material of the core 1 are not particularly limited, and a general core can be employed without any problem. Examples of the shape include a tubular shape and a cylindrical shape. Examples of the material include metals (iron, aluminum, stainless steel, etc.), resins (polyolefin resins such as polyethylene and polypropylene, ABS resins, bakelite resins, etc.), paper, and the like. can give. Also, a paper impregnated with a resin can be given.

１ 巻芯
１ａ 外周面
２ 片面粘着テープ
２ａ 外側面
２ｂ 端面
３ 巻き付け始端部
５ 段差緩和部材
５ａ 外側面
７ 両面接着テープ
７ａ 外側面
７ｂ 端面
８ 第二段差緩和部材
８ａ 外側面
１０ 段差
１１ 第二段差 DESCRIPTION OF SYMBOLS 1 Core 1a Outer peripheral surface 2 Single-sided adhesive tape 2a Outer side surface 2b End surface 3 Winding start end part 5 Step relief member 5a Outer side surface 7 Double-sided adhesive tape 7a Outer side surface 7b End surface 8 Second step relief member 8a Outer side surface 10 Step 11 11 Second step

Claims (14)

巻芯の外周面に帯状物が複数巻重ねて巻き付けられてなり、前記帯状物の巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差により、該段差の外側に巻き重ねられた前記帯状物が変形して段差痕が生じ得るロール状物において、
前記段差を緩和する段差緩和部材を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記巻き付け始端部の端面に隣接して配したことを特徴とするロール状物の段差痕低減構造。 A plurality of strips are wound around the outer peripheral surface of the core, and the step formed between the outer surface of the strip and the outer peripheral surface of the core at the winding start end of the strip, In the roll-shaped object in which the band-shaped object wound on the outside of the step can be deformed to cause a step mark,
The step reducing member for reducing the step is disposed adjacent to the end surface of the winding start end so as to substantially fill the space formed between the end surface of the winding start end and the outer peripheral surface of the core. A structure for reducing the level difference of rolls characterized by 前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されていることを特徴とする請求項１に記載のロール状物の段差痕低減構造。   The roll-like object according to claim 1, wherein an outer side surface of the winding start end portion of the belt-like object and an outer peripheral surface of the core are smoothly connected via an outer side surface of the step reducing member. Level difference mark reduction structure. 前記帯状物が粘着テープ又は接着テープであり、その粘着面又は接着面を内側にして前記巻芯に巻き付けられて前記ロール状物が形成されていることを特徴とする請求項１又は請求項２に記載のロール状物の段差痕低減構造。   The said strip | belt-shaped object is an adhesive tape or an adhesive tape, and the said roll-shaped object is formed by being wound around the said core with the adhesive surface or adhesive surface inside. The level | step difference trace reduction structure of the roll-shaped thing as described in 2. 前記帯状物が、粘着面又は接着面に剥離ライナーを備える粘着テープ又は接着テープであり、前記剥離ライナーを内側にして前記巻芯に巻き付けられて前記ロール状物が形成されているとともに、前記巻き付け始端部の前記剥離ライナーが粘着部材又は接着部材を介して前記巻芯の外周面に固定されていることを特徴とする請求項１又は請求項２に記載のロール状物の段差痕低減構造。   The strip is an adhesive tape or an adhesive tape having a release liner on an adhesive surface or an adhesive surface, and the roll-like material is formed by being wound around the core with the release liner inside. The step mark reduction structure for a roll-like object according to claim 1 or 2, wherein the release liner at the start end is fixed to the outer peripheral surface of the core via an adhesive member or an adhesive member. 前記粘着部材又は前記接着部材の前記巻き付け始端部側に、前記帯状物の外側面と前記巻芯の外周面との間で前記段差が形成されるとともに、その反対側に前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面との間で第二段差が形成されるロール状物において、
前記段差緩和部材を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記巻き付け始端部の端面に隣接して配するとともに、
前記第二段差を緩和する第二段差緩和部材を、前記粘着部材又は前記接着部材の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように、前記粘着部材又は前記接着部材の端面に隣接して配したことを特徴とする請求項４に記載のロール状物の段差痕低減構造。 The step is formed between the outer side surface of the strip and the outer peripheral surface of the core on the winding start end side of the adhesive member or the adhesive member, and the adhesive member or the adhesive on the opposite side. In the roll-shaped object in which a second step is formed between the outer surface of the member and the outer peripheral surface of the core,
The step reducing member is disposed adjacent to the end surface of the winding start end so as to substantially fill a space formed between the end surface of the winding start end and the outer peripheral surface of the winding core,
The pressure-sensitive adhesive member or the adhesion member is configured so that the second step-relief member for relaxing the second level difference substantially fills a space formed between an end surface of the pressure-sensitive adhesive member or the adhesive member and an outer peripheral surface of the core. 5. The step mark reduction structure for a roll-like object according to claim 4, wherein the structure is disposed adjacent to an end face of the member. 前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面とが、前記第二段差緩和部材の外側面を介して滑らかに連結されていることを特徴とする請求項５に記載のロール状物の段差痕低減構造。   The roll according to claim 5, wherein the outer surface of the adhesive member or the adhesive member and the outer peripheral surface of the core are smoothly connected via the outer surface of the second step relief member. Structure to reduce the level difference in the shape 前記段差緩和部材が樹脂製であることを特徴とする請求項１〜６のいずれか一項に記載のロール状物の段差痕低減構造。   The step difference reducing structure for a roll-like object according to any one of claims 1 to 6, wherein the step relief member is made of resin. 前記段差緩和部材は、液状又はペースト状の硬化性樹脂を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように配した後に硬化させて形成したものであることを特徴とする請求項７に記載のロール状物の段差痕低減構造。   The level difference reducing member is formed by arranging a liquid or paste-like curable resin so as to substantially fill a space formed between the end surface of the winding start end and the outer peripheral surface of the core, and then curing the resin. The structure for reducing a step mark of a roll-like object according to claim 7, wherein the structure is a thing. 前記第二段差緩和部材が樹脂製であることを特徴とする請求項５又は請求項６に記載のロール状物の段差痕低減構造。   The step mark reduction structure for a roll-like object according to claim 5 or 6, wherein the second step relief member is made of resin. 前記第二段差緩和部材は、液状又はペースト状の硬化性樹脂を、前記粘着部材又は前記接着部材の端面と前記巻芯の外周面との間に形成された空間をほぼ満たすように配した後に硬化させて形成したものであることを特徴とする請求項９に記載のロール状物の段差痕低減構造。   The second level difference mitigating member is arranged after the liquid or paste-like curable resin is disposed so as to substantially fill the space formed between the end face of the adhesive member or the adhesive member and the outer peripheral surface of the core. The structure for reducing a level difference in a roll-like material according to claim 9, wherein the structure is formed by curing. 巻芯の外周面に帯状物を複数巻重ねて巻き付けてロール状物を製造するロール状物の製造方法であって、
前記帯状物の巻き付け始端部を前記巻芯の外周面に固定する固定工程と、
固定された前記巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差を緩和する段差緩和部材を、前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されるように配する段差緩和工程と、
前記段差緩和部材が配された前記巻芯に前記帯状物を複数巻重ねて巻き付ける巻き付け工程と、
を備えることを特徴とするロール状物の製造方法。 A roll-shaped manufacturing method for manufacturing a roll-shaped product by winding a plurality of strips on the outer peripheral surface of a winding core,
A fixing step of fixing the winding start end of the belt-like object to the outer peripheral surface of the core;
A step mitigating member that relaxes a step formed between the outer surface of the strip and the outer peripheral surface of the core at the fixed winding start end, and the outer surface of the winding start end of the strip and the winding A step mitigating step that is arranged so that the outer peripheral surface of the core is smoothly connected via the outer surface of the step mitigating member;
A winding step of winding a plurality of the belt-like objects around the winding core on which the step relaxing member is disposed;
The manufacturing method of the roll-shaped thing characterized by including. 巻芯の外周面に帯状物を複数巻重ねて巻き付けてロール状物を製造するロール状物の製造方法であって、
前記帯状物の巻き付け始端部を粘着部材又は接着部材を介して前記巻芯の外周面に固定する固定工程と、
固定された前記巻き付け始端部に前記帯状物の外側面と前記巻芯の外周面との間で形成される段差を緩和する段差緩和部材を、前記帯状物の巻き付け始端部の外側面と前記巻芯の外周面とが、前記段差緩和部材の外側面を介して滑らかに連結されるように配するとともに、前記粘着部材又は前記接着部材を挟んで前記段差とは反対側に前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面との間で形成される第二段差を緩和する第二段差緩和部材を、前記粘着部材又は前記接着部材の外側面と前記巻芯の外周面とが、前記第二段差緩和部材の外側面を介して滑らかに連結されるように配する段差緩和工程と、
前記段差緩和部材及び前記第二段差緩和部材が配された前記巻芯に前記帯状物を複数巻重ねて巻き付ける巻き付け工程と、
を備えることを特徴とするロール状物の製造方法。 A roll-shaped manufacturing method for manufacturing a roll-shaped product by winding a plurality of strips on the outer peripheral surface of a winding core,
A fixing step of fixing the winding start end of the belt-like object to the outer peripheral surface of the core via an adhesive member or an adhesive member;
A step mitigating member that relaxes a step formed between the outer surface of the strip and the outer peripheral surface of the core at the fixed winding start end, and the outer surface of the winding start end of the strip and the winding The outer peripheral surface of the core is arranged so as to be smoothly connected via the outer surface of the step reducing member, and the adhesive member or the side opposite to the step with the adhesive member or the adhesive member interposed therebetween A second step mitigating member for mitigating a second step formed between the outer surface of the adhesive member and the outer peripheral surface of the core; and the outer surface of the adhesive member or the adhesive member and the outer peripheral surface of the core Is a step mitigating step that is arranged to be smoothly connected via the outer surface of the second step mitigating member,
A winding step of winding a plurality of the belt-like objects around the winding core on which the step difference reducing member and the second step difference reducing member are arranged;
The manufacturing method of the roll-shaped thing characterized by including. 前記段差緩和工程は、液状又はペースト状の硬化性樹脂を、前記巻き付け始端部の端面と前記巻芯の外周面との間に形成された空間を満たすように配し、その後に前記硬化性樹脂を硬化させて前記段差緩和部材を形成することを特徴とする請求項１１又は請求項１２に記載のロール状物の製造方法。   In the step relief process, a liquid or paste-like curable resin is disposed so as to fill a space formed between an end surface of the winding start end and an outer peripheral surface of the core, and then the curable resin. The method for producing a roll-like product according to claim 11 or 12, wherein the step difference reducing member is formed by curing the step. 前記段差緩和工程は、液状又はペースト状の硬化性樹脂を、前記粘着部材又は前記接着部材の端面と前記巻芯の外周面との間に形成された空間を満たすように配し、その後に前記硬化性樹脂を硬化させて前記第二段差緩和部材を形成することを特徴とする請求項１２に記載のロール状物の製造方法。   In the step relief process, a liquid or paste-like curable resin is disposed so as to fill a space formed between an end surface of the adhesive member or the adhesive member and an outer peripheral surface of the core, and thereafter The method for producing a roll-like product according to claim 12, wherein the second level difference reducing member is formed by curing a curable resin.
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