JP2006299120A - Resin sheet, container for transferring electronic part and cover tape - Google Patents

Resin sheet, container for transferring electronic part and cover tape Download PDF

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JP2006299120A
JP2006299120A JP2005123924A JP2005123924A JP2006299120A JP 2006299120 A JP2006299120 A JP 2006299120A JP 2005123924 A JP2005123924 A JP 2005123924A JP 2005123924 A JP2005123924 A JP 2005123924A JP 2006299120 A JP2006299120 A JP 2006299120A
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resin sheet
ionic liquid
cover tape
layer
container
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Yusuke Ishida
祐輔 石田
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Sumitomo Bakelite Co Ltd
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Sumitomo Bakelite Co Ltd
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<P>PROBLEM TO BE SOLVED: To provide a container for transferring electronic parts and a cover tape, causing neither destruction of electronic parts nor wrong mounting due to static electricity even at low humidities by using a resin sheet exerting antistaticity at low humidities. <P>SOLUTION: The resin sheet contains at least an ionic liquid at a part of the sheet, wherein the ionic liquid is contained to make one or both side surface resistance 10<SP>2</SP>-10<SP>11</SP>Ω/sq., and exerts antistaticity at low humidities. The container for transferring electronic parts and the cover tape use the resin sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、樹脂シート及びそれを用いた電子部品搬送用容器並びにカバーテープに関するものである。   The present invention relates to a resin sheet, an electronic component transport container using the resin sheet, and a cover tape.

従来、電子部品の輸送時や実装時に発生する静電気で、電子部品が壊れたり、実装不良が起こったりする問題が起きていた。この問題に対して、電子部品の搬送用容器であるキャリアテープやカバーテープを帯電防止性にすることで対応してきた。しかしながら、電子部品の更なる小型化により、現状のレベルの帯電防止性では、問題を解決出来ない事例が増えてきている。これに伴い、キャリアテープに関してはカーボンブラック等をシートに練り込んだり、表面に塗布したりすることで、安定した帯電防止性能を実現している。しかしながら、カーンブラックを用いると黒色になることから、透明用途では使用できないという問題や、カーボンブラックの脱落により、電子部品が汚染される等の問題がある。また、カバーテープに関しては、特許文献1に示されるように、帯電防止剤を用いて、この問題に対応しているが、一般的な透明帯電防止剤は湿度が低いとその効果を発揮しないため、特に湿度の低い冬場では、静電気による、電子部品の破壊や、実装不良の問題を解決しきれていない。そこで、低湿度下でも帯電防止性を発揮する、電子部品搬送用容器及びカバーテープの開発が求められている。   Conventionally, there has been a problem that electronic components are broken or mounting defects occur due to static electricity generated during transportation or mounting of the electronic components. This problem has been addressed by making the carrier tape and cover tape, which are containers for transporting electronic components, antistatic. However, with the further miniaturization of electronic components, there are increasing cases in which the problem cannot be solved with the current level of antistatic properties. Along with this, with regard to the carrier tape, a stable antistatic performance is realized by kneading carbon black or the like into a sheet or applying it to the surface. However, since Kern Black becomes black, there are problems that it cannot be used in transparent applications, and that electronic components are contaminated by the removal of carbon black. As for the cover tape, as shown in Patent Document 1, an antistatic agent is used to cope with this problem, but a general transparent antistatic agent does not exhibit its effect when the humidity is low. Especially in winter when humidity is low, the problem of electronic component destruction and mounting failure due to static electricity cannot be solved. Therefore, development of a container for transporting electronic components and a cover tape that exhibit antistatic properties even under low humidity is required.

特開2001−171727号公報JP 2001-171727 A

本発明により、イオン性液体を含有させることで、低湿度下でも帯電防止性を発揮する樹脂シートを提供でき、それを用いることにより、低湿度下でも静電気による電子部品の破壊や、実装不良が起こらない電子部品搬送用容器及びカバーテープを提供する事にある。   By including an ionic liquid according to the present invention, a resin sheet that exhibits antistatic properties even at low humidity can be provided. By using the resin sheet, electronic components can be destroyed or mounted poorly due to static electricity even at low humidity. It is to provide a container for transporting electronic parts and a cover tape that do not occur.

本発明は、
(1)イオン性液体を含有することを特徴とする樹脂シート、
(2)前記樹脂シートの片面又は両面の表面抵抗値が10〜1011Ω/□である(1)項記載の樹脂シート、
(3)前記樹脂シートの片面又は両面に、少なくとも1層を積層した(1)又は(2)項記載の樹脂シート、
(4)前記イオン性液体が、イミダゾリウム系イオン性液体、ピリジニウム系イオン性液体、アンモニウム系イオン性液体、ホスホニウム系イオン性液体、スルホニウム系イオン性液体のいずれか又は、それらの組み合わせである(1)から(3)項のいずれかに記載の樹脂シート、
(5)(1)〜(4)項のいずれかに記載の樹脂シートから成形される電子部品搬送用容器、
(6)基材層、シール層からなる少なくとも2層のカバーテープであって、(1)〜(4)項のいずれかに記載の樹脂シートを層構成に含有するカバーテープ、
である。
The present invention
(1) A resin sheet containing an ionic liquid,
(2) The resin sheet according to (1), wherein a surface resistance value of one side or both sides of the resin sheet is 10 2 to 10 11 Ω / □.
(3) The resin sheet according to (1) or (2), wherein at least one layer is laminated on one side or both sides of the resin sheet,
(4) The ionic liquid is any one of an imidazolium ionic liquid, a pyridinium ionic liquid, an ammonium ionic liquid, a phosphonium ionic liquid, a sulfonium ionic liquid, or a combination thereof ( 1) The resin sheet according to any one of (3),
(5) Electronic component transport container molded from the resin sheet according to any one of (1) to (4),
(6) A cover tape comprising at least two layers consisting of a base material layer and a seal layer, the cover tape containing the resin sheet according to any one of (1) to (4) in a layer structure,
It is.

本発明に従うと、イオン性液体を含有させることで、低湿度下でも帯電防止性を発揮する樹脂シートを提供でき、これを用いることにより、低湿度下でも静電気による電子部品の破壊や、実装不良が起こらない、電子部品搬送用容器及びカバーテープを提供することが出来る。   According to the present invention, by containing an ionic liquid, it is possible to provide a resin sheet that exhibits antistatic properties even under low humidity. Therefore, it is possible to provide a container for transporting electronic components and a cover tape that do not occur.

以下、本発明を更に詳細に説明する。
本発明は、イオン性液体を含有することを特徴とする樹脂シートである。イオン性液体とは、特定のカチオン及びアニオンの組み合わせからなる、室温付近で液体状態にある有機塩(常温溶融塩)である。カチオンとしては、特に限定はしないが、イミダゾリウム系、ピリジニウム系、アンモニウム系、ホスホニウム系、スルホニウム系等が好ましく使用できる。アニオンとしては、特に規定はしないが、BF 、PF 、AlCl 、NO 、NO 、I、AsF 、SbF 、NbF 、TaF 、等の無機アニオン系、CFSO 、(CFSO、p−CHPhSO 、CHCO、CHSO 、CFSO 、(CFSO、CCO 、CSO 、(CSO、(CFSO)(CFCO)N、(CN)の有機アニオン系等が好ましく使用できる。導電性の機構としてはイオンによるものなので、湿度に関係なく、安定した導電性を示す。また、イオン性液体は、透明であることから、基材の透明性をほとんど損なわない。
Hereinafter, the present invention will be described in more detail.
The present invention is a resin sheet containing an ionic liquid. An ionic liquid is an organic salt (room temperature molten salt) that is in a liquid state near room temperature and is composed of a combination of specific cations and anions. The cation is not particularly limited, but imidazolium-based, pyridinium-based, ammonium-based, phosphonium-based, sulfonium-based and the like can be preferably used. The anion is not particularly defined, but BF 4 , PF 6 , AlCl 4 , NO 2 , NO 3 , I , AsF 6 , SbF 6 , NbF 6 , TaF 6 , etc. Inorganic anion system, CF 3 SO 2 , (CF 3 SO 2 ) 2 N , p-CH 3 PhSO 3 , CH 3 CO 2 , CH 3 SO 3 , CF 3 SO 3 , (CF 3 SO 2) 3 C -, C 3 F 7 CO 2 -, C 4 F 9 SO 3 -, (C 2 F 5 SO 2) 2 N -, (CF 3 SO 2) (CF 3 CO) N -, (CN ) 2 N - organic anionic, or the like can be preferably used for. Since the conductivity mechanism is based on ions, it exhibits stable conductivity regardless of humidity. Moreover, since the ionic liquid is transparent, the transparency of the substrate is hardly impaired.

イオン性液体を含有する層の表面抵抗値は10〜1011Ω/□である。表面抵抗値が下限値未満になると、表面抵抗値が低すぎて外部で発生した静電気等が流れ込み、内容物である電子部品を破壊する恐れがある。また、上限値を超えると、静電気の抑制にあまり効果がなく、発生した静電気による、電子部品の破壊や、実装不良が起こりやすい。 The surface resistance value of the layer containing the ionic liquid is 10 2 to 10 11 Ω / □. If the surface resistance value is less than the lower limit value, the surface resistance value is too low and externally generated static electricity or the like may flow into the electronic component that is the content. Moreover, if the upper limit is exceeded, there is not much effect on the suppression of static electricity, and electronic components are easily damaged or mounting defects are likely to occur due to the generated static electricity.

本発明での樹脂シートは、熱可塑性樹脂シートが用いられる。その中でも、ポリ塩化ビニル系樹脂シートやポリオレフィン樹脂系シート、ポリスチレン樹脂系シート、ポリエステル樹脂系シート、ポリアミド樹脂系シートなどが好ましく使用される。更に、これかの樹脂シートを多層化して用いることもできる。   As the resin sheet in the present invention, a thermoplastic resin sheet is used. Among these, a polyvinyl chloride resin sheet, a polyolefin resin sheet, a polystyrene resin sheet, a polyester resin sheet, a polyamide resin sheet, and the like are preferably used. Further, the resin sheet can be used in a multilayered form.

本発明の樹脂シートを用いることにより、低湿度下でも安定した帯電防止性を有する電子部品搬送用容器又はカバーテープを製作することが出来る。また、イオン性液体を含有する層を中間の層に用いることもでき、電子部品搬送用容器とカバーテープとが接するシール面に影響を与えることなく使用できるため、電子部品搬送用容器とカバーテープのシール性に影響を与えず使用することも出来る。
電子部品と接する面にイオン性液体を用いた帯電防止層を用いる場合は、発生した静電気を瞬時に拡散し、静電気による不具合を抑えることが出来る。
By using the resin sheet of the present invention, it is possible to produce an electronic component transport container or cover tape having stable antistatic properties even under low humidity. In addition, since a layer containing an ionic liquid can be used as an intermediate layer, it can be used without affecting the sealing surface where the container for transporting electronic components and the cover tape are in contact with each other. It can also be used without affecting the sealing performance.
When an antistatic layer using an ionic liquid is used on the surface in contact with the electronic component, the generated static electricity can be diffused instantaneously, and problems due to static electricity can be suppressed.

以下にイオン性液体を含有する層を中間の層に用いた場合の静電気抑制について、図1を用いて述べる。図1は模式的なカバーテープを示した。基材層1の外面が(+)電荷に帯電したとすると、反対のシール層3の外面は誘導帯電により(−)電荷に帯電する。電気力線は(+)電荷に始まり(−)電荷で終わるので、この場合の電気力線は、図1の方向aとなる。このカバーテープの内層部には、基材層1とクッション層2との間に中間のイオン性液体を含有した層4が存在すると、層4の中は自由に電荷がイオンとして動くことが出来るので、この電荷の偏りを打ち消す方向に電荷が偏る。つまり、層4の基材層1側面に(−)電荷、中間層2側面に(+)電荷となり、電気力線は図1の方向bとなる。層4内の電気力線はカバーテープ全体の電気力線の方向aと反対向きなので、カバーテープ全体の電気力線と打ち消しあって、電気力線の強さを減少させる。これらの効果により、イオン性液体含有層4があると、静電気の発生を抑えることが出来る。   Hereinafter, static electricity suppression when a layer containing an ionic liquid is used as an intermediate layer will be described with reference to FIG. FIG. 1 shows a schematic cover tape. If the outer surface of the base material layer 1 is charged to (+) charge, the outer surface of the opposite seal layer 3 is charged to (−) charge by induction charging. Since the electric lines of force start with (+) charge and end with (−) charge, the electric lines of force in this case are in the direction a in FIG. When a layer 4 containing an intermediate ionic liquid exists between the base material layer 1 and the cushion layer 2 in the inner layer portion of the cover tape, the charge can move freely as ions in the layer 4. Therefore, the charge is biased in a direction to cancel the bias of the charge. That is, the layer 4 has a (−) charge on the side surface of the base material layer 1 and a (+) charge on the side surface of the intermediate layer 2, and the lines of electric force are in the direction b in FIG. Since the electric lines of force in the layer 4 are opposite to the direction a of the electric lines of force of the entire cover tape, they cancel each other out with the electric lines of force of the entire cover tape, thereby reducing the strength of the electric lines of force. Due to these effects, the presence of the ionic liquid-containing layer 4 can suppress the generation of static electricity.

樹脂シートにイオン性液体を含有させる方法としては特に限定しないが、樹脂シートの表面にイオン性液体含有塗料を塗布する方法、熱可塑性樹脂等にイオン性液体を分散させ、それをシーティングする方法、接着剤にイオン性液体を分散させ、その接着剤でシートを接着する方法等が好ましく使用できる。   The method of containing the ionic liquid in the resin sheet is not particularly limited, but a method of applying an ionic liquid-containing coating on the surface of the resin sheet, a method of dispersing the ionic liquid in a thermoplastic resin, and sheeting it, A method of dispersing an ionic liquid in an adhesive and bonding the sheet with the adhesive can be preferably used.

イオン性液体を含有するシートには、帯電防止性能を損なわない範囲で、各種添加剤やフィラー等を添加する事が可能である。   Various additives and fillers can be added to the sheet containing the ionic liquid as long as the antistatic performance is not impaired.

本発明を実施例により更に詳細に説明するが、これは単なる例示であり、本発明はこれにより限定されるものではない。
<実施例1>
ウレタン系塗料(大阪印刷インキ(株)製 UPT−100(V)OP)にイオン性液体(広栄化学工業(株)製 IL−P14)を混合し、厚み0.3mmのA−PET基材の両面に塗布し、塗料塗布面の表面抵抗値が10Ω/□の樹脂シートを得た。
<実施例2>
O−PETとLLDPEをドライラミネート剤(三井武田ケミカル(株)製 A310/A3)で貼り合わせた。その後、カバーテープとの熱圧着用のシーラント塗料(住友ベークライト(株)製)とイオン性液体(広栄化学工業(株)製 IL−P14)を混合した塗料を、LLDPE面に塗布し、LLDPE面の表面抵抗値が10Ω/□の多層の樹脂シートを得た。
<実施例3>
O−PETとLLDPEをドライラミネート剤(三井武田ケミカル(株)製 A310/A3)で貼り合わせ、ウレタン系塗料(大阪印刷インキ(株)製 UPT−100(V)OP)にイオン性液体(広栄化学工業(株)製 IL−P14)を混合した塗料を、O−PET面に塗布し、O−PET面の表面抵抗値が10Ω/□の多層の樹脂シートを得た。その後、LLDPE面にカバーテープとの熱圧着用のシーラント(住友ベークライト(株)製)を塗布した。
<実施例4>
ドライラミネート剤(三井武田ケミカル(株)製 A310/A3)に、イオン性液体(広栄化学工業(株)製 IL−P14)を混合したものを、O−PETに塗布し、ドライラミネート剤の塗布面の表面抵抗値が10Ω/□のO−PETの樹脂シートを得た。その後、ドライラミネート剤の塗布面とLLDPEを貼り合わせた。その後、LLDPE面にカバーテープとの熱圧着用のシーラント(住友ベークライト(株)製)を塗布した。
<比較例1>
ウレタン系塗料(大阪印刷インキ(株)製)を、厚み0.3mmのA−PET基材の両面に塗布した。
<比較例2>
帯電防止剤(花王(株)製 エレクトロストリッパー)を、厚み0.3mmのA−PET基材の両面に塗布した。
<比較例3>
ドライラミネート剤(三井武田ケミカル(株)製 A310/A3)で、O−PETとLLDPEを貼り合わせた。その後、LLDPE面にカバーテープとの熱圧着用のシーラント(住友ベークライト(株)製)を塗布した。
<比較例4>
O−PETとLLDPEをドライラミネート剤(三井武田ケミカル(株)製 A310/A3)で貼り合わせ、ウレタン系塗料(大阪印刷インキ(株)製)を、O−PET面に塗布した。その後、LLDPE面にカバーテープとの熱圧着用のシーラント(住友ベークライト(株)製)を塗布した。
<比較例5>
O−PETとLLDPEをドライラミネート剤(三井武田ケミカル(株)製 A310/A3)で貼り合わせ、帯電防止剤(花王(株)製 エレクトロストリッパー)を、O−PET面に塗布した。その後、LLDPE面にカバーテープとの熱圧着用のシーラント(住友ベークライト(株)製)を塗布した。
The present invention will be described in more detail by way of examples, but this is merely illustrative and the present invention is not limited thereby.
<Example 1>
An ionic liquid (IL-P14 manufactured by Guangei Chemical Industry Co., Ltd.) is mixed with urethane-based paint (UPT-100 (V) OP manufactured by Osaka Printing Ink Co., Ltd.), and a 0.3 mm thick A-PET base material is formed. The resin sheet having a surface resistance value of 10 8 Ω / □ on the coated surface was applied to both surfaces.
<Example 2>
O-PET and LLDPE were bonded together with a dry laminating agent (A310 / A3 manufactured by Mitsui Takeda Chemical Co., Ltd.). After that, a mixture of a sealant paint (commercially available from Sumitomo Bakelite Co., Ltd.) and an ionic liquid (IL-P14 produced by Guangei Chemical Industry Co., Ltd.) for thermocompression bonding with the cover tape is applied to the LLDPE surface, A multilayer resin sheet having a surface resistance value of 10 8 Ω / □ was obtained.
<Example 3>
O-PET and LLDPE are bonded together with a dry laminating agent (A310 / A3 manufactured by Mitsui Takeda Chemical Co., Ltd.), and an ionic liquid (Guangei) is applied to urethane-based paint (UPT-100 (V) OP manufactured by Osaka Printing Ink Co., Ltd.). A paint mixed with IL-P14 manufactured by Chemical Industry Co., Ltd. was applied to the O-PET surface to obtain a multilayer resin sheet having a surface resistance value of 10 8 Ω / □ on the O-PET surface. Thereafter, a sealant for thermocompression bonding with a cover tape (manufactured by Sumitomo Bakelite Co., Ltd.) was applied to the LLDPE surface.
<Example 4>
A mixture of a dry laminating agent (A310 / A3 manufactured by Mitsui Takeda Chemical Co., Ltd.) and an ionic liquid (IL-P14 manufactured by Guangei Chemical Industry Co., Ltd.) is applied to O-PET, and the dry laminating agent is applied. An O-PET resin sheet having a surface resistance value of 10 8 Ω / □ was obtained. Thereafter, the application surface of the dry laminating agent and LLDPE were bonded together. Thereafter, a sealant for thermocompression bonding with a cover tape (manufactured by Sumitomo Bakelite Co., Ltd.) was applied to the LLDPE surface.
<Comparative Example 1>
A urethane-based paint (manufactured by Osaka Printing Ink Co., Ltd.) was applied to both sides of a 0.3 mm thick A-PET substrate.
<Comparative Example 2>
An antistatic agent (Electro Stripper manufactured by Kao Corporation) was applied to both sides of a 0.3 mm thick A-PET substrate.
<Comparative Example 3>
O-PET and LLDPE were bonded together with a dry laminating agent (A310 / A3, manufactured by Mitsui Takeda Chemical Co., Ltd.). Thereafter, a sealant for thermocompression bonding with a cover tape (manufactured by Sumitomo Bakelite Co., Ltd.) was applied to the LLDPE surface.
<Comparative example 4>
O-PET and LLDPE were bonded together with a dry laminating agent (A310 / A3, manufactured by Mitsui Takeda Chemical Co., Ltd.), and a urethane paint (produced by Osaka Printing Ink Co., Ltd.) was applied to the O-PET surface. Thereafter, a sealant for thermocompression bonding with a cover tape (manufactured by Sumitomo Bakelite Co., Ltd.) was applied to the LLDPE surface.
<Comparative Example 5>
O-PET and LLDPE were bonded together with a dry laminating agent (A310 / A3 manufactured by Mitsui Takeda Chemical Co., Ltd.), and an antistatic agent (electro stripper manufactured by Kao Co., Ltd.) was applied to the O-PET surface. Thereafter, a sealant for thermocompression bonding with a cover tape (manufactured by Sumitomo Bakelite Co., Ltd.) was applied to the LLDPE surface.

表1に実施例1〜4及び、比較例1〜5において、表面抵抗値の湿度依存性測定結果を示した。イオン性液体を含有した実施例1〜4では、低湿度でも表面抵抗値の上昇がなく、低湿度下での帯電防止性能が発揮できている。しかし、帯電防止剤を塗布した比較例2及び5では、湿度が20%RHになると、表面抵抗値が1012Ω/□以上になっており、低湿度下で帯電による問題が発生することとなる。 Table 1 shows the humidity dependence measurement results of the surface resistance values in Examples 1 to 4 and Comparative Examples 1 to 5. In Examples 1 to 4 containing an ionic liquid, the surface resistance value does not increase even at low humidity, and the antistatic performance under low humidity can be exhibited. However, in Comparative Examples 2 and 5 to which an antistatic agent is applied, when the humidity is 20% RH, the surface resistance value is 10 12 Ω / □ or more, and a problem due to charging occurs at low humidity. Become.

また、表1に樹脂シートの光線透過率及びヘイズを示した。実施例1〜4の光線透過率及びヘイズは、イオン性液体を含有していない比較例1、3及び4と比べ、同等であり、イオン性液体は透明性を阻害しないといえる。   Table 1 shows the light transmittance and haze of the resin sheet. The light transmittance and haze of Examples 1 to 4 are equivalent to those of Comparative Examples 1, 3, and 4 that do not contain an ionic liquid, and it can be said that the ionic liquid does not inhibit transparency.

更に、表1にキャリアテープ及びカバーテープの帯電圧を測定した。測定方法としては、まず、実施例1、比較例1及び2のA−PETシートをキャリアテープに成形した。そのキャリアテープに電子部品を挿入し、カバーテープ(住友ベークライト(株)製 CSL−Z7302)をシールし、25℃―20%RHの環境下で、600rpmで5分間振動させた。その後、25℃―20%RHの環境下で、カバーテープを剥離後、電子部品を取り出し、キャリアテープの帯電圧を、表面電位計(トレック・ジャパン(株)製 MODEL 370−1)で測定した。同様に、実施例2及び3、比較例3〜5のカバーテープを、電子部品を挿入したキャリアテープ(住友ベークライト(株)製 A771C)に、シールし、25℃―20%RHの環境下で、600rpmで5分間振動させた。その後、25℃―20%RHの環境下で、カバーテープを剥離後、カバーテープの帯電圧を、表面電位計(トレック・ジャパン(株)製 MODEL 370−1)で測定した。帯電圧が50Vより低いものを○、50〜3000Vのものを△、3000Vを超えるものを×とした。いずれの組み合わせに関しても、イオン性液体含有の実施例1〜4において、キャリアテープ及びカバーテープの帯電は50Vより低く、ほとんど帯電関係の問題は起きないレベルである。   Furthermore, the charged voltage of the carrier tape and the cover tape was measured in Table 1. As a measuring method, first, the A-PET sheets of Example 1 and Comparative Examples 1 and 2 were formed on a carrier tape. An electronic component was inserted into the carrier tape, a cover tape (CSL-Z7302 manufactured by Sumitomo Bakelite Co., Ltd.) was sealed, and vibrated at 600 rpm for 5 minutes in an environment of 25 ° C.-20% RH. Thereafter, the cover tape was peeled off in an environment of 25 ° C. to 20% RH, the electronic component was taken out, and the charged voltage of the carrier tape was measured with a surface potential meter (MODEL 370-1 manufactured by Trek Japan Co., Ltd.). . Similarly, the cover tapes of Examples 2 and 3 and Comparative Examples 3 to 5 were sealed on a carrier tape (A771C manufactured by Sumitomo Bakelite Co., Ltd.) into which electronic components were inserted, and the environment was 25 ° C. to 20% RH. And oscillated at 600 rpm for 5 minutes. Thereafter, the cover tape was peeled off in an environment of 25 ° C. to 20% RH, and then the charged voltage of the cover tape was measured with a surface potential meter (MODEL 370-1 manufactured by Trek Japan Co., Ltd.). A sample having a charged voltage lower than 50V was evaluated as ◯, a sample having a voltage of 50 to 3000V was evaluated as Δ, and a sample having a voltage exceeding 3000V was evaluated as ×. In any combination, in Examples 1 to 4 containing the ionic liquid, the charge of the carrier tape and the cover tape is lower than 50 V, which is a level at which almost no charge-related problems occur.

Figure 2006299120
Figure 2006299120

本発明により、イオン性液体を含有させることで、低湿度下でも帯電防止性を発揮する、樹脂シートを提供でき、それを用いることにより、低湿度下でも、静電気による電子部品の破壊や、実装不良等が起こらない、電子部品搬送用容器及びカバーテープを提供することが出来る。   According to the present invention, it is possible to provide a resin sheet that exhibits antistatic properties even under low humidity by containing an ionic liquid. By using the resin sheet, it is possible to destroy or mount electronic components due to static electricity even under low humidity. It is possible to provide a container for transporting electronic parts and a cover tape that do not cause defects.

模式的なカバーテープの説明図である。It is explanatory drawing of a typical cover tape.

符号の説明Explanation of symbols

1:基材層
2:クッション層
3:シール層
4:イオン性液体含有層
5:カバーテープ
a、b:電気力線の方向
1: Base material layer 2: Cushion layer 3: Seal layer 4: Layer containing ionic liquid 5: Cover tape a, b: Direction of lines of electric force

Claims (6)

イオン性液体を含有することを特徴とする樹脂シート。   A resin sheet containing an ionic liquid. 前記樹脂シートの片面又は両面の表面抵抗値が10〜1011Ω/□である請求項1記載の樹脂シート。
The resin sheet according to claim 1, wherein a surface resistance value of one side or both sides of the resin sheet is 10 2 to 10 11 Ω / □.
前記樹脂シートの片面又は両面に、少なくとも1層を積層した請求項1又は2記載の樹脂シート。 The resin sheet according to claim 1 or 2, wherein at least one layer is laminated on one side or both sides of the resin sheet. 前記イオン性液体が、イミダゾリウム系イオン性液体、ピリジニウム系イオン性液体、アンモニウム系イオン性液体、ホスホニウム系イオン性液体、スルホニウム系イオン性液体のいずれか又は、それらの組み合わせである請求項1から3のいずれかに記載の樹脂シート。

The ionic liquid is an imidazolium-based ionic liquid, a pyridinium-based ionic liquid, an ammonium-based ionic liquid, a phosphonium-based ionic liquid, a sulfonium-based ionic liquid, or a combination thereof. 4. The resin sheet according to any one of 3.

請求項1〜4のいずれかに記載の樹脂シートから成形される電子部品搬送用容器。 An electronic component carrying container formed from the resin sheet according to claim 1. 基材層、シール層からなる少なくとも2層のカバーテープであって、請求項1〜4のいずれかに記載の樹脂シートを層構成に含有するカバーテープ。 A cover tape comprising at least two layers of a base material layer and a seal layer, wherein the cover tape contains the resin sheet according to any one of claims 1 to 4 in a layer configuration.
JP2005123924A 2005-04-21 2005-04-21 Resin sheet, container for transferring electronic part and cover tape Pending JP2006299120A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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JP2006299119A (en) * 2005-04-21 2006-11-02 Sumitomo Bakelite Co Ltd Adhesive and cover tape using it
JP2009040914A (en) * 2007-08-09 2009-02-26 Denki Kagaku Kogyo Kk Styrenic resin composition
JP2010121093A (en) * 2008-11-21 2010-06-03 Nof Corp Coating-type antistatic agent
KR20150083847A (en) 2012-11-05 2015-07-20 린텍 가부시키가이샤 Adhesive sheet
JP2020121727A (en) * 2019-01-29 2020-08-13 住友ベークライト株式会社 Cover tape for electronic component packaging and electronic component package

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Publication number Priority date Publication date Assignee Title
JP2006299119A (en) * 2005-04-21 2006-11-02 Sumitomo Bakelite Co Ltd Adhesive and cover tape using it
JP2009040914A (en) * 2007-08-09 2009-02-26 Denki Kagaku Kogyo Kk Styrenic resin composition
JP2010121093A (en) * 2008-11-21 2010-06-03 Nof Corp Coating-type antistatic agent
KR20150083847A (en) 2012-11-05 2015-07-20 린텍 가부시키가이샤 Adhesive sheet
JP2020121727A (en) * 2019-01-29 2020-08-13 住友ベークライト株式会社 Cover tape for electronic component packaging and electronic component package
JP7192532B2 (en) 2019-01-29 2022-12-20 住友ベークライト株式会社 Cover tape for electronic component packaging and electronic component package

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