JP2006070074A - Colored adhesive tape made of fluororesin and method for producing the same - Google Patents

Colored adhesive tape made of fluororesin and method for producing the same Download PDF

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JP2006070074A
JP2006070074A JP2004251965A JP2004251965A JP2006070074A JP 2006070074 A JP2006070074 A JP 2006070074A JP 2004251965 A JP2004251965 A JP 2004251965A JP 2004251965 A JP2004251965 A JP 2004251965A JP 2006070074 A JP2006070074 A JP 2006070074A
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adhesive tape
fluororesin
colored
film
adhesive
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JP4690677B2 (en
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Kazuhiro Sakai
和洋 堺
Masaaki Ikeda
正昭 池田
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Chukoh Chemical Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a colored adhesive tape and a method for producing the same in which organic pigments and dyes which are abundant in kinds can be used; dedicated equipment is not needed; and the tape can respond to multi-color small-lot product applications. <P>SOLUTION: The colored adhesive tape 21 made of a fluororesin comprises a PTFE skived film 22 and a layer 23 composed of an adhesive colored in green which is provided on one side of the film. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、優れた耐熱性、電気的特性、非粘着性等の特性を活かして有用に使用されているフッ素樹脂製着色粘着テープ及びその製造方法に関する。   The present invention relates to a fluororesin colored pressure-sensitive adhesive tape and a method for producing the same, which are usefully utilized taking advantage of excellent heat resistance, electrical characteristics, non-adhesiveness, and the like.

フッ素樹脂製粘着テープは、フッ素樹脂の優れた耐熱性、電気的特性、耐薬品性、非粘着性等の特性を活かして電気絶縁材料、プラスチックフィルムのヒートシール機等、種々の用途に欠かせない材料として有用に使用されている。こうした粘着テープは、大部分は着色タイプではない粘着テープで、PTFE等のフッ素樹脂のフィルムは白色あるいは半透明であるので、貼り付けた場合、その粘着テープは基本的に白い色相となる。その場合、貼り付ける相手材が白い色相の場合、粘着テープが貼り付けられているかどうかの判別が困難になる。   Fluoropolymer adhesive tapes are indispensable for various applications such as electrical insulation materials and plastic film heat sealing machines by taking advantage of the excellent heat resistance, electrical properties, chemical resistance, and non-adhesive properties of fluororesins. It is useful as no material. Most of these adhesive tapes are non-colored adhesive tapes, and a film of fluororesin such as PTFE is white or translucent, so when applied, the adhesive tape basically has a white hue. In that case, when the counterpart material to be pasted has a white hue, it is difficult to determine whether the adhesive tape is pasted.

しかし、用途上、使用箇所、使用目的等を明確に表示、識別するために該テープを着色することが要求される場合がある。従来、そのような場合、着色したフッ素樹脂テープ基材フィルムに粘着剤を塗布・焼付けすることで着色粘着テープが製造されていた。具体的な用途例は以下のとおりである。   However, in some applications, it may be required to color the tape in order to clearly display and identify the location of use and purpose of use. Conventionally, in such a case, a colored adhesive tape has been produced by applying and baking an adhesive on a colored fluororesin tape substrate film. Specific application examples are as follows.

1)大型の袋のケース:
袋の素材を金型で熱溶断(型抜き)する際に金型にテープが貼り付けられる。この場合、着色粘着テープには、耐熱性と離型性が要求される。従来、袋は白色で、PTFEスカイブドフィルムにシリコーン系粘着材を塗布した粘着テープを使用していた。しかし、テープが袋に貼り付いていたのに気が付かずに出荷してしまうという問題があった。
1) Large bag case:
When the material of the bag is heat-melted (die-cut) with a mold, a tape is attached to the mold. In this case, the colored adhesive tape is required to have heat resistance and releasability. Conventionally, the bag is white and an adhesive tape in which a silicone adhesive material is applied to a PTFE skived film has been used. However, there was a problem that the tape was attached to the bag and shipped without being noticed.

2)フィルムラミネートのケース:
例えば、アルミニウムとフィルムの複合材を製造する際、あるいは金属箔のような硬い素材がロールを通過する際に素材のエッジがロールを傷つける。このため、素材のエッジの通過する位置のロールの周面に着色粘着テープを巻いて保護している。図4はその例を示すもので、図中の符番31はロール、符番32は素材33のエッジに対応するロール部分に巻かれた着色粘着テープを示す。ところで、こうしたケースの場合、着色粘着テープは、古いテープを一斉に剥がして新しいテープに貼りかえることにより定期的に交換している。しかし、ロールは一般に白色であるため、PTFEスカイブドフィルムにシリコーン系粘着材を塗布した粘着テープでは、全てを剥し終えたのかどうかの判別が困難である。
2) Film laminate case:
For example, when manufacturing a composite material of aluminum and a film, or when a hard material such as a metal foil passes through the roll, the edge of the material damages the roll. For this reason, the colored adhesive tape is wound around the peripheral surface of the roll at the position where the edge of the material passes to protect it. FIG. 4 shows such an example. In the figure, reference numeral 31 indicates a roll, and reference numeral 32 indicates a colored adhesive tape wound around a roll portion corresponding to the edge of the material 33. By the way, in such a case, the colored adhesive tape is periodically replaced by peeling off old tapes all at once and applying them to new tapes. However, since the roll is generally white, it is difficult to determine whether or not all of the roll has been peeled off with an adhesive tape in which a silicone-based adhesive material is applied to a PTFE skived film.

3)電線結束用テープのケース:
電気メーカーでは、電線がどういう種類のものかを明確に識別するために電線結束用テープを色分けしている。
このようなことから、上記の課題を解消するような着色粘着テープが要求されている。
3) Case for tape for wire bundling:
Electric manufacturers use color-coded tapes for binding wires to clearly identify the types of wires.
For this reason, there is a demand for a colored adhesive tape that can solve the above-mentioned problems.

また、従来、着色粘着テープとしては、隠蔽力が不充分に着色された合成樹脂製テープもしくシートの片面に、ベージュ色に着色された粘着剤層が設けられたことを特徴とする粘着テープが知られている(特許文献1)。
特開平5−43846号公報
Conventionally, as a colored adhesive tape, an adhesive tape colored in a beige color is provided on one side of a synthetic resin tape or sheet with insufficient hiding power. Is known (Patent Document 1).
JP-A-5-43846

しかしながら、フッ素樹脂テープ基材フィルムを着色するには、以下に述べるような問題がある。
1)フッ素樹脂の成形温度が高いことから、着色剤として、有機の顔料、染料が使用できず、種類の少ない金属酸化物等の無機顔料などに限定される。
However, coloring the fluororesin tape substrate film has the following problems.
1) Since the molding temperature of the fluororesin is high, organic pigments and dyes cannot be used as colorants, and are limited to inorganic pigments such as metal oxides with few types.

2)フッ素樹脂に顔料を混合するためには、高度の顔料の分散・混合技術が要求される。   2) In order to mix pigments with fluororesins, advanced pigment dispersion and mixing techniques are required.

3)フッ素樹脂に顔料を混合する場合は、顔料の分散ムラ発生、異物の混入の可能性も大きく、フッ素樹脂の成形温度が高いことから、前記異物の炭化、あるいは顔料の分散ムラに起因するピンホールの発生がある等の理由で密閉した精密な専用の分散・混合設備が必要である。   3) When a pigment is mixed with a fluororesin, there is a high possibility of occurrence of dispersion of the pigment and mixing of foreign matter, and the molding temperature of the fluororesin is high, resulting in carbonization of the foreign matter or dispersion of the pigment. Closed and precise dedicated dispersion / mixing equipment is necessary due to the occurrence of pinholes.

4)フッ素樹脂に顔料を混合する場合において、専用の設備で種々の色に対応するには、色替えのための作業も必要であることから、多色少量製品には対応することが困難である。   4) When mixing pigments with fluororesin, it is difficult to handle multi-color and small-quantity products because work for changing colors is required to handle various colors with dedicated equipment. is there.

本発明は、上記課題を解決する方法を鋭意検討した結果、種類の豊富な有機顔料・染料が使用可能で、専用の設備を必要とせず、多色少量製品用途に対応可能な着色粘着テープ及びその製造方法を提供することを目的とする。   The present invention, as a result of intensive investigations on a method for solving the above-mentioned problems, allows the use of a wide variety of organic pigments and dyes, does not require special equipment, and can be used for multicolor, low-volume product applications and It aims at providing the manufacturing method.

フッ素樹脂粘着テープは、粘着剤を塗布可能にするための表面処理を施したフッ素樹脂基材フィルムの片面にナイフ・コーター、ロールコ一夕ー等の塗工機で粘着剤を塗布、焼付し、所定のテープ幅にスリットすることによって製造される。その際、塗布される粘着剤は、有機溶剤に粘着剤成分及び架橋剤を溶解させた溶液状態にある。   Fluororesin adhesive tape is applied and baked with a coating machine such as a knife coater or a roll coater on one side of a fluororesin base film that has been surface-treated to make it possible to apply adhesive. It is manufactured by slitting to a predetermined tape width. At that time, the applied adhesive is in a solution state in which an adhesive component and a crosslinking agent are dissolved in an organic solvent.

本発明は、この粘着剤溶液に着色剤を混合し、塗布する粘着剤を着色し、フッ素樹脂基材フィルムに該着色粘着剤を塗布、焼付けすることにより、種々の色の粘着テープおよびその方法を提供するものである。   The present invention mixes a colorant with this pressure-sensitive adhesive solution, colors the pressure-sensitive adhesive to be applied, and coats and bakes the color pressure-sensitive adhesive on a fluororesin base film, and a method for the same. Is to provide.

即ち、透明あるいは半透明なフッ素樹脂基材フィルムを通して着色された粘着剤が見えることにより、結果的に仕上がった製品は、種々の色の粘着テープとなる。この場合、粘着剤に着色剤を分散・混合するのに、粉末状のフッ素樹脂に無機顔料を分散・混合する際に必要な精密な専用の設備ではなく、粘着剤塗布工程で、通常使用される簡易的な擬拝用のプロペラ形状の羽根を備えた粘着剤成分、有機溶剤及び架橋剤を混合する装置が使用可能である。また、攪拌容器を色毎に準備し、変えることにより、攪拌する量に関わらず、少量ロットでも対応可能である。   That is, when the colored adhesive is visible through the transparent or translucent fluororesin base film, the finished product becomes adhesive tapes of various colors. In this case, to disperse and mix the colorant in the pressure-sensitive adhesive, it is not a precise dedicated equipment required for dispersing and mixing inorganic pigments in powdered fluororesin, but is usually used in the pressure-sensitive adhesive application process. An apparatus for mixing an adhesive component, an organic solvent and a crosslinking agent having a propeller-shaped blade for simple imitation can be used. In addition, by preparing and changing a stirring container for each color, a small lot can be handled regardless of the amount of stirring.

本発明によれば、種類の豊富な有機顔料・染料が使用可能で、専用の設備を必要とせず、多色少量製品用途に対応可能なフッ素樹脂製着色粘着テープ及びその製造方法を提供することが可能となり、用途上、使用箇所、使用目的等を明確に表示、識別することが必要な場合にフッ素樹脂製着色粘着テープが得られる。   According to the present invention, it is possible to provide a fluororesin colored pressure-sensitive adhesive tape that can use various kinds of organic pigments and dyes, does not require dedicated equipment, and can be used for multicolor and small-quantity products, and a method for producing the same. A fluororesin colored adhesive tape can be obtained when it is necessary to clearly display and identify the location of use and purpose of use.

以下、本発明について更に詳しく説明する。
本発明に使用可能なフツ素樹脂製粘着テープ基材フィルムとしては、例えば四フッ化エチレン樹脂(PTFE)フィルム、四フッ化エチレン一六フッ化プロピレン共重合体(PFEP)フィルム、四フッ化エチレンーパーフルオロアルキルピニルェーテル共重合体(PFA)フィルム、三フッ化塩化エチレン樹脂(PCTFE)フィルム、フッ化ビニリデン樹脂(PVDF)フィルム、フッ化ビニル樹脂(PVF)フィルムが挙げられる。
Hereinafter, the present invention will be described in more detail.
Examples of the fluororesin adhesive tape base film that can be used in the present invention include a tetrafluoroethylene resin (PTFE) film, a tetrafluoroethylene-hexafluoropropylene copolymer (PFEP) film, and a tetrafluoroethylene. -Perfluoroalkyl pinyl ether copolymer (PFA) film, trifluorochloroethylene resin (PCTFE) film, vinylidene fluoride resin (PVDF) film, and vinyl fluoride resin (PVF) film.

また、本発明に使用される粘着剤としては、粘着剤自体が無色透明なものであることが必要条件であり、限定するものではないが、通常フッ素樹脂製粘着テープ製造に使用されるシリコーン系粘着剤、アクリル系粘着剤は無色透明であることから使用可能である。   In addition, the pressure-sensitive adhesive used in the present invention is a necessary condition that the pressure-sensitive adhesive itself is colorless and transparent, and is not limited, but is usually a silicone type used for manufacturing a fluororesin pressure-sensitive adhesive tape. Adhesives and acrylic adhesives can be used because they are colorless and transparent.

また、本発明に使用される着色剤としては、基本的には、粘着テープ製造工程中で、粘着剤を架橋させるために加えられるキュア温度に耐えうるものであれば、どのような染料、顔料でも使用可能である。通常、フツ素樹脂製粘着テープ製造に使用されるシリコーン系、アクリル系粘着剤の場合、架橋温度は、それぞれシリコーン系の場合は、150〜200℃、アクリル系の場合は、100〜110℃あり、限定するものではないが、フタロシアニン顔料、アゾ顔料などが使用可能である。シリコーン粘着剤を着色する目的で市販されている東レ・ダウコーニング・シリコーン株式会社製カラーペーストなどもこの目的に好適に使用可能である。   The colorant used in the present invention is basically any dye or pigment as long as it can withstand the curing temperature applied to crosslink the pressure sensitive adhesive in the pressure sensitive adhesive tape manufacturing process. But it can be used. Usually, in the case of silicone-based and acrylic pressure-sensitive adhesives used in the production of fluorine resin pressure-sensitive adhesive tapes, the crosslinking temperature is 150 to 200 ° C. in the case of silicone and 100 to 110 ° C. in the case of acrylic. Although not limited, phthalocyanine pigments, azo pigments, and the like can be used. A commercially available color paste manufactured by Toray Dow Corning Silicone Co., Ltd. for the purpose of coloring the silicone adhesive can also be suitably used for this purpose.

次に、シリコーン系粘着剤の場合を例にとり、本発明に係るフッ素樹脂製着色粘着テープの作り方について図1及び図2を参照して説明する。ここで、図1は、フィルム基材に塗布する塗工液を作る攪拌機の模式図である。また、図2は、フッ素樹脂製着色粘着テープを作るための塗工機の概略的な説明図である。   Next, taking a silicone adhesive as an example, how to make a fluororesin colored adhesive tape according to the present invention will be described with reference to FIGS. Here, FIG. 1 is a schematic view of a stirrer for producing a coating liquid to be applied to a film substrate. FIG. 2 is a schematic explanatory view of a coating machine for making a fluororesin colored adhesive tape.

攪拌機1は、例えば図1に示すように、塗工用希釈液2を収容した攪拌容器3と、この攪拌容器3の塗工用希釈液2中に配置されたプロペラ形状の攪拌羽根4と、この攪拌羽根4を回転させるモータ5とを有している。通常のフッ素樹脂粘着テープを製造する場合、ロールコータ−等の塗工機で粘着剤をフッ素樹脂基材フィルムに塗工する前工程として、図1のように撹枠機1を使用して粘着剤を調合する。   For example, as shown in FIG. 1, the stirrer 1 includes a stirring container 3 containing a coating diluent 2, a propeller-shaped stirring blade 4 disposed in the coating diluent 2 of the stirring container 3, and And a motor 5 for rotating the stirring blade 4. When producing an ordinary fluororesin adhesive tape, as a pre-process for applying the adhesive to the fluororesin base film with a coating machine such as a roll coater, the adhesive is made using the stirring frame 1 as shown in FIG. Prepare the preparation.

その場合、攪拌容器3に通常、固形分濃度60重量%程度のトルエン等の有機溶剤に溶解させた市販のシリコーン粘着剤原溶液を所定量計り取る。それに過酸化物などの粘着剤固形分に対して1〜2%程度の粘着剤用架橋剤および希釈用の有機溶剤を加え、攪拌羽根4を備えた攪拌機1等を用いて塗工用希釈液2を調製する。ここで、塗工機に適した塗工用希釈液の粘着剤固形分は、通常35〜40重量%である。なお、本発明の場合、塗工用希釈液2の調製に際しては、架橋剤、希釈用の有機溶剤に加えて、着色剤も同時に添加することによって着色された粘着剤溶液を調整する。   In that case, a predetermined amount of a commercially available silicone adhesive stock solution dissolved in an organic solvent such as toluene having a solid concentration of about 60% by weight is usually measured in the stirring vessel 3. Add about 1-2% cross-linking agent for pressure-sensitive adhesive and organic solvent for dilution to the solid content of pressure-sensitive adhesive such as peroxide, and use it with a stirrer 1 equipped with a stirring blade 4 or the like. 2 is prepared. Here, the adhesive solid content of the coating diluent suitable for the coating machine is usually 35 to 40% by weight. In the case of the present invention, in preparing the coating diluent 2, a colored adhesive solution is prepared by simultaneously adding a colorant in addition to the crosslinking agent and the organic solvent for dilution.

次に、図2の塗工機11について説明する。
塗工機11は、送り出し部12と、ロールコータ−等の塗工部13と、乾燥炉14と、キュア炉15と、巻取り部16を備えている。前記送り出し部12は、塗工部13側に送るフィルム基材17が巻かれた送り出し用ロール18を備えている。前記塗工部13は、粘着剤を収容した容器19を備え、前記フィルム基材17の片面に粘着剤を塗布する機能を有している。通常、40〜50μmの粘着剤がフィルム基材17の片面に塗布される。前記乾燥炉14は、通常100℃以下に制御されていて、有機溶剤を除去する機能を有している。前記キュア炉15は、通常150〜200℃に制御されていて、基材フィルム上に塗布された粘着剤をキュアする機能を有している。前記巻取り部16は、上記した一連の工程を経た、片面に着色された粘着剤からなる層が形成されたフィルム基材(即ち、フッ素樹脂製着色粘着テープ)が巻き取られる。
Next, the coating machine 11 of FIG. 2 will be described.
The coating machine 11 includes a feeding unit 12, a coating unit 13 such as a roll coater, a drying furnace 14, a curing furnace 15, and a winding unit 16. The delivery unit 12 includes a delivery roll 18 around which a film base material 17 to be sent to the coating unit 13 side is wound. The coating unit 13 includes a container 19 that contains an adhesive, and has a function of applying the adhesive to one side of the film substrate 17. Usually, a 40-50 μm adhesive is applied to one side of the film substrate 17. The drying furnace 14 is normally controlled to 100 ° C. or less and has a function of removing the organic solvent. The curing furnace 15 is normally controlled at 150 to 200 ° C. and has a function of curing the adhesive applied on the base film. The winding portion 16 is wound with a film base material (that is, a fluororesin colored pressure-sensitive adhesive tape) on which a layer made of a pressure-sensitive adhesive colored on one side is formed through the series of steps described above.

即ち、フッ素樹脂製フィルム基材17は、送り出し部12から塗工部13へ送られてその片面に粘着剤が塗布された後、乾燥炉14でフィルム基材17上に塗布された着色剤中の有機溶剤が除去され、更にキュア炉15で粘着剤がキュアされ、その後フッ素樹脂製着色粘着テープが巻取り部16で巻き取られる。   That is, the fluororesin film base material 17 is sent from the delivery section 12 to the coating section 13 and applied with an adhesive on one side thereof, and then the colorant applied on the film base material 17 in the drying furnace 14. The organic solvent is removed, the adhesive is cured in a curing furnace 15, and then the fluororesin colored adhesive tape is wound up by the winding unit 16.

次に、実施例により、さらに本発明を詳述する。
(実施例1)
まず、攪拌容器に固形分濃度60%のシリコーン粘着剤原液(商品名:SH4280、東レダウコーニング・シリコーン社製)を5kg、希釈剤としてのキシレンを2.5kg、架橋剤としてのベンゾイル・パーオキサイトを30g、市販の有機系着色顔料として緑色着色剤(商品名:PV FAST GREEN GNX、クラリアントジャパン(株)社製)30gを投入し、図1に示すような攪拌羽根を備えた攪拌機で均一に混合し、塗工液とした。なお、シリコーン粘着剤原液の固形分は、5000×0.6=3000gである。また、キシレンによる希釈後のシリコーン粘着剤の固形分濃度は40重量%である。更に、緑色着色剤の濃度は、(30/3000)×100=1%とした。
Next, the present invention will be further described in detail with reference to examples.
Example 1
First, 5 kg of a silicone adhesive stock solution (trade name: SH4280, manufactured by Toray Dow Corning Silicone Co., Ltd.) having a solid content concentration of 60%, 2.5 kg of xylene as a diluent, and benzoyl peroxy as a cross-linking agent in a stirring vessel. 30 g of a site, 30 g of a green colorant (trade name: PV FAST GREEN GNX, manufactured by Clariant Japan Co., Ltd.) as a commercially available organic coloring pigment, and uniformly with a stirrer equipped with a stirring blade as shown in FIG. To obtain a coating solution. The solid content of the silicone adhesive stock solution is 5000 × 0.6 = 3000 g. The solid content concentration of the silicone pressure-sensitive adhesive after dilution with xylene is 40% by weight. Further, the concentration of the green colorant was (30/3000) × 100 = 1%.

次に、粘着テープの基材である厚さ0.1mmの四フッ化エチレン樹脂(PTFE)製スカイブドテープに上記塗工液を図2に示すような塗工機を使用し、厚さ50μmになるように粘着剤を塗布した。つづいて、乾燥炉で80℃で乾燥した後、更にキュア炉15で180℃で焼付け架橋を行い、PTFE製スカイプドフィルムを基材とするフッ素樹脂製着色粘着テープを得た。   Next, a coating machine as shown in FIG. 2 is used to apply the above coating liquid to a 0.1 mm-thick tetrafluoroethylene resin (PTFE) skived tape as a base material of the adhesive tape, and a thickness of 50 μm. An adhesive was applied so that Subsequently, after drying at 80 ° C. in a drying furnace, the composition was further baked and crosslinked at 180 ° C. in a curing furnace 15 to obtain a fluororesin colored pressure-sensitive adhesive tape having a PTFE skyped film as a base material.

このようにして得られたフッ素樹脂製着色粘着テープ21は、図3に示すように、厚さ0.1mmのPTFE製スカイブドテープ(フィルム基材)22の片面に、厚さ50μmの緑色に着色された粘着剤からなる層23を設けた構成になっている。   As shown in FIG. 3, the fluororesin colored adhesive tape 21 thus obtained has a green color of 50 μm on one side of a PTFE skived tape (film substrate) 22 having a thickness of 0.1 mm. A layer 23 made of a colored adhesive is provided.

(実施例2)
実施例1と緑色着色剤が90gである点を除いて、実施例1と同様な方法でPTFE製スカイプドフィルムを基材とするフッ素樹脂製着色粘着テープを得た。なお、緑色着色剤の濃度は、(90/3000)×100=3%とした。
(Example 2)
A fluororesin colored pressure-sensitive adhesive tape having a PTFE skyped film as a base material was obtained in the same manner as in Example 1 except that Example 1 and the green colorant were 90 g. The concentration of the green colorant was (90/3000) × 100 = 3%.

(実施例3)
実施例1と緑色着色剤が150gである点を除いて、実施例1と同様な方法でPTFE製スカイプドフィルムを基材とするフッ素樹脂製着色粘着テープを得た。なお、緑色着色剤の濃度は、(150/3000)×100=5%とした。
(Example 3)
A fluororesin colored pressure-sensitive adhesive tape based on a PTFE skyped film was obtained in the same manner as in Example 1 except that Example 1 and the green colorant were 150 g. The concentration of the green colorant was (150/3000) × 100 = 5%.

(比較例1)
厚さ0.1mmのPTFE製スカイブドテープを基材とし、それに実施例1で用いた塗工液から着色剤を除いた組成の塗工液を、実施例1と同じ製作条件でロールコーターにて塗布して、無着色の基材に無着色のシリコーン粘着剤が塗布された組成のPTFE製スカイプドフィルムを基材とする粘着テープを得た。
(Comparative Example 1)
Using a PTFE skived tape having a thickness of 0.1 mm as a base material, a coating liquid having a composition obtained by removing the colorant from the coating liquid used in Example 1 was applied to a roll coater under the same production conditions as in Example 1. The pressure-sensitive adhesive tape was obtained using a PTFE skyped film having a composition in which an uncolored base material was coated with an uncolored base material.

(比較例2)
PTFE樹脂(商品名:T−7AJ、三井デュポンフロロケミカル社製)5kgをビニール袋に計り取り、その中に150gの緑色顔料(商品名:TFD0550グリーン、大日精化社製)を添加して手で振って粗攪拌を行う。次いで、これをヘンシェルミキサーに投入し、十分に混合してスカイブドテープ製作用ビレットの成形材料を得た。
(Comparative Example 2)
Weigh 5 kg of PTFE resin (trade name: T-7AJ, manufactured by Mitsui DuPont Fluorochemical Co., Ltd.) into a plastic bag, and add 150 g of green pigment (trade name: TFD0550 green, manufactured by Dainichi Seika Co., Ltd.) to it. Shake with, and stir roughly. Next, this was put into a Henschel mixer and mixed well to obtain a molding material for a working billet made of skived tape.

次に、この成形原料を使用し、成形圧力200kg/cm、焼成温度380℃での条件でビレットを成形し、厚さ0.1mmのPTFE製スカイブドフィルムを削りだし、粘着テープの基材とした。 Next, using this forming raw material, a billet is formed under conditions of a forming pressure of 200 kg / cm 2 and a baking temperature of 380 ° C., and a 0.1 mm thick PTFE skived film is cut out to form a base material for an adhesive tape. It was.

次いで、この着色されたPTFE製スカイプドフィルムを基材とし、実施例1で用いた塗工液から着色剤を除いた組成の塗工液を、実施例1と同じ製作条件でロールコータ−にて塗布して、着色された基材に無着色のシリコーン粘着剤が塗布された組成のPTFEスカイブドフィルムを基材とする粘着テープを得た。   Next, using this colored PTFE skypeed film as a base material, a coating liquid having a composition obtained by removing the colorant from the coating liquid used in Example 1 was applied to a roll coater under the same production conditions as in Example 1. To obtain a pressure-sensitive adhesive tape using a PTFE skived film having a composition in which an uncolored silicone pressure-sensitive adhesive is applied to a colored base material.

実施例1〜3及び比較例で作製したPTFE製スカイブドフィルムを基材とするシリコーン粘着テープの着色度合いを判定するために、スガ試験機(株〉製「SMカラーコンピューターSM−4−2型」を使用して色相測定を実施した。その結果を、下記表1に示す。   In order to determine the degree of coloring of the silicone adhesive tape based on the PTFE skived film prepared in Examples 1 to 3 and Comparative Example, “SM color computer SM-4-2 type” manufactured by Suga Test Instruments Co., Ltd. Was used to measure the hue. The results are shown in Table 1 below.

本試験方法は、試験機付属の白色標準試料に試験試料テープを貼付け、色相を測定し、標準試料との色相の差をL*値(明度;数値が大きいほど白色側、即ち標準試料に近くなる)で比較するものである。即ち、試験試料のL*値が白色標準試料のL*値から離れるほど着色したことになる。

Figure 2006070074
In this test method, a test sample tape is attached to a white standard sample attached to the testing machine, and the hue is measured. To be compared). That is, the L * value of the test sample is colored the farther from the L * value of the white standard sample.
Figure 2006070074

表1に示した結果より、比較例1の無着色PTFE製スカイプドフィルムに無着色のシリコーン粘着剤を塗布した粘着テープは、当然のことながら白色標準試料のL*値とほとんど差がなく着色がされていないことを示している。また、本発明に係る実施例1、2、3の無着色PTFE製スカイブドフィルムに着色シリコーン粘着剤を塗布した粘着テープは、夫々着色剤をシリコーン粘着剤固形分に対して1%、3%、5%加えたものであり、実施例1の場合は、多少L*値が大きいが、それでも白色標準試料のL*値よりかなり小さいL*値を示している。また、実施例1〜3の場合、従来技術に係る試験試料である比較例2と比較した場合でも多少L*値は大きいが、十分に着色されていると判断される。つまり、実施例1〜3によれば、比較例2と比べ着色の点で若干劣るが、着色剤等を混合して得られた塗工液をフッ素樹脂製フィルム基材に塗布した後、乾燥、焼付けを行なうのみで着色された粘着剤からなる層を形成できるので、従来と比べ簡便な方法で着色粘着テープを得ることができる。   From the results shown in Table 1, the adhesive tape obtained by applying an uncolored silicone adhesive to the uncolored PTFE skyped film of Comparative Example 1 is naturally colored with almost no difference from the L * value of the white standard sample. Indicates that has not been. Moreover, the adhesive tape which apply | coated the colored silicone adhesive to the uncolored PTFE skived film of Examples 1, 2, and 3 which concerns on this invention is 1%, 3% with respect to silicone adhesive solid content, respectively. In the case of Example 1, the L * value is somewhat large, but still shows an L * value much smaller than the L * value of the white standard sample. In the case of Examples 1 to 3, even when compared with Comparative Example 2, which is a test sample according to the prior art, the L * value is somewhat large, but it is determined that the sample is sufficiently colored. That is, according to Examples 1-3, although it is a little inferior in the point of coloring compared with the comparative example 2, after apply | coating the coating liquid obtained by mixing a coloring agent etc. to a fluororesin film base material, it dries. Since a layer made of a colored pressure-sensitive adhesive can be formed only by baking, a colored pressure-sensitive adhesive tape can be obtained by a simpler method than conventional methods.

また、実施例2及び3のL*値はほぼ同等であり、着色剤は粘着剤固形分に対して2%添加すれば十分であるとの結果が示されている。以上のことから、無着色のPTFE製スカイブドフィルムを基材とし、着色したシリコーン粘着剤をその基材に塗布した本発明に係る粘着テープが、従来技術に係る着色したPTFE製スカイプドフィルムに無着色の粘着剤を塗布して製作される粘着テープに変わりうることが実証された。   In addition, the L * values of Examples 2 and 3 are almost the same, and it is shown that it is sufficient to add 2% of the colorant to the adhesive solid content. From the above, the pressure-sensitive adhesive tape according to the present invention in which an uncolored PTFE skived film is used as a base material and a colored silicone pressure-sensitive adhesive is applied to the base material is used as a colored PTFE skyped film according to the prior art. It has been demonstrated that it can be changed to an adhesive tape manufactured by applying an uncolored adhesive.

本発明によれば、種類の豊富な有機顔料・染料が使用可能で、専用の設備を必要とせず、多色少量製品用途に対応可能なフッ素樹脂製着色粘着テープ及びその製造方法を提供することが可能となり、用途上、使用箇所、使用目的等を明確に表示、識別することが必要な場合に着色フッ素樹脂製粘着テープを提供できる。   According to the present invention, it is possible to provide a fluororesin colored pressure-sensitive adhesive tape that can use various kinds of organic pigments and dyes, does not require dedicated equipment, and can be used for multicolor and small-quantity products, and a method for producing the same. Therefore, a colored fluororesin pressure-sensitive adhesive tape can be provided when it is necessary to clearly display and identify the place of use, purpose of use, and the like.

なお、この発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。更に、異なる実施形態に亘る構成要素を適宜組み合わせてもよい。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

塗工用溶液を調製するために使用され攪拌器の模式図。The schematic diagram of the stirrer used in order to prepare the solution for coating. フッ素樹脂製着色粘着テープを作るための塗工機の概略的な説明図。Schematic explanatory drawing of the coating machine for making a fluororesin colored adhesive tape. 本発明の実施例1に係る粘着テープの断面図。Sectional drawing of the adhesive tape which concerns on Example 1 of this invention. 従来の着色粘着テープとロールとの関係を示す説明図。Explanatory drawing which shows the relationship between the conventional coloring adhesive tape and a roll.

符号の説明Explanation of symbols

1…撹絆機、2…塗工用希釈溶液、3…攪拌容器、4…攪拌羽根、11…塗工機、12…送り出し部、13…塗工部、14…乾燥炉、15…キュア炉、16…巻取り部、18…フッ素樹脂製フィルム基材、21…シリコーン粘着テープ、22…PTFE製スカイブドフィルム、23…粘着剤からなる層。   DESCRIPTION OF SYMBOLS 1 ... Stirring machine, 2 ... Dilution solution for coating, 3 ... Stirring container, 4 ... Stirring blade, 11 ... Coating machine, 12 ... Delivery part, 13 ... Coating part, 14 ... Drying furnace, 15 ... Cure furnace , 16 ... Winding part, 18 ... Fluororesin film base material, 21 ... Silicone adhesive tape, 22 ... PTFE skived film, 23 ... Layer made of adhesive.

Claims (2)

フッ素樹脂製フィルム基材の片面に、着色された粘着剤からなる層が設けられていることを特徴とするフッ素樹脂製着色粘着テープ。 1. A fluororesin colored pressure-sensitive adhesive tape, wherein a layer made of a colored pressure-sensitive adhesive is provided on one side of a fluororesin film substrate. 粘着剤、希釈剤、架橋剤及び着色剤を混合して塗工液を形成した後、この塗工液をフッ素樹脂製フィルム基材に塗布し、更に乾燥、焼付けを行なって着色された粘着剤からなる層を形成することを特徴とするフッ素樹脂製着色粘着テープの製造方法。 After the pressure-sensitive adhesive, diluent, cross-linking agent and colorant are mixed to form a coating liquid, this coating liquid is applied to a fluororesin film substrate, and further dried and baked to color the pressure-sensitive adhesive. A method for producing a fluororesin colored pressure-sensitive adhesive tape, comprising forming a layer comprising:
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024042A (en) * 2007-07-17 2009-02-05 Nitto Denko Corp Self-adhesive tape for cable bundling and method for producing the same

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JPS58101051A (en) * 1981-12-12 1983-06-16 モダン・プラスチツク工業株式会社 Metal-like colored adhesive sheet having excellent brightness
JPS6356237U (en) * 1986-09-26 1988-04-15
JPH0485383A (en) * 1990-07-26 1992-03-18 Modern Plast Kogyo Kk Pressure-sensitive adhesive sheet with multicolor pattern and preparation thereof
JPH0848959A (en) * 1994-08-03 1996-02-20 Rikidain Kk Colored self-adhesive composition, marking sheet using the same, and its production
JPH09125018A (en) * 1995-10-27 1997-05-13 Lintec Corp Colored film
JP2001164202A (en) * 1999-12-06 2001-06-19 Nitto Denko Corp Pressure-sensitive adhesive tape-rolled material and method of producing the pressure-sensitive adhesive tape
JP2004083706A (en) * 2002-08-26 2004-03-18 Nitto Denko Corp Adhesive tape for release and endless belt

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS58101051A (en) * 1981-12-12 1983-06-16 モダン・プラスチツク工業株式会社 Metal-like colored adhesive sheet having excellent brightness
JPS6356237U (en) * 1986-09-26 1988-04-15
JPH0485383A (en) * 1990-07-26 1992-03-18 Modern Plast Kogyo Kk Pressure-sensitive adhesive sheet with multicolor pattern and preparation thereof
JPH0848959A (en) * 1994-08-03 1996-02-20 Rikidain Kk Colored self-adhesive composition, marking sheet using the same, and its production
JPH09125018A (en) * 1995-10-27 1997-05-13 Lintec Corp Colored film
JP2001164202A (en) * 1999-12-06 2001-06-19 Nitto Denko Corp Pressure-sensitive adhesive tape-rolled material and method of producing the pressure-sensitive adhesive tape
JP2004083706A (en) * 2002-08-26 2004-03-18 Nitto Denko Corp Adhesive tape for release and endless belt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024042A (en) * 2007-07-17 2009-02-05 Nitto Denko Corp Self-adhesive tape for cable bundling and method for producing the same

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