JP2005067734A - Carrier tape pasteboard base material and carrier tape - Google Patents

Carrier tape pasteboard base material and carrier tape Download PDF

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JP2005067734A
JP2005067734A JP2004044097A JP2004044097A JP2005067734A JP 2005067734 A JP2005067734 A JP 2005067734A JP 2004044097 A JP2004044097 A JP 2004044097A JP 2004044097 A JP2004044097 A JP 2004044097A JP 2005067734 A JP2005067734 A JP 2005067734A
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carrier tape
base material
paper
mount base
layers
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JP2005067734A5 (en
JP4387828B2 (en
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Kazuhide Yamakawa
一秀 山川
Yoshiki Mizusawa
義樹 水澤
Yoshiteru Murakami
義晃 村上
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Daio Paper Corp
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrier tape pasteboard base material mainly comprising a pulp material where electronic parts or the like which are surface mounted parts loaded do not deteriorate due to corrosion. <P>SOLUTION: In the carrier tape pasteboard base material that has a multilayered combination structure provided with a plurality of layers and each layer mainly comprises the pulp material, a pH on the surface is 6.0 to 8.0, a residual sulphate ion quantity is less than 500 ppm, a paper strength reinforcing agent of 1.0 to 8.0 pts.wt. and a thickener mainly comprising ethylene oxide of 0.1 to 1.0 pts.wt. are blended to the pulp material of 100 pts.wt. in each of the plurality of the layers, and a moistened paper regain just before pressing the parts is controlled to 75 to 80 wt%. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、電子部品を装填する際に用いるキャリアテープ台紙基材及びキャリアテープに係り、より詳細には、装填された電子部品が腐食して劣化することがないキャリアテープ台紙基材及びキャリアテープに関するものである。   The present invention relates to a carrier tape mount base material and a carrier tape used when electronic components are loaded, and more particularly, to a carrier tape mount base material and a carrier tape in which the loaded electronic components do not corrode and deteriorate. It is about.

近年、各種電子機器の製造において、回路基板に対して各種電子部品を自動装着する技術が種々採用されている。中でも、回路基板の表面に対して各種表面実装部品を直接実装する技術、いわゆる表面実装技術は、著しい発達を見せている。   In recent years, various techniques for automatically mounting various electronic components on circuit boards have been employed in the manufacture of various electronic devices. Among them, a technique for directly mounting various surface mount components on the surface of a circuit board, so-called surface mount technique, has been remarkably developed.

この表面実装には、一般に、キャリアテープ台紙基材で形成されたキャリアテープが使用される。キャリアテープ台紙基材に、例えば、表面実装部品収納用のキャビティ部が形成されるなどの加工が施され、キャビティ部に表面実装部品を収納しながら、キャリアテープ台紙基材の表面にカバーテープをヒートシール接着した上で、キャリアテープとして使用に供される。   For this surface mounting, a carrier tape formed of a carrier tape mount base material is generally used. The carrier tape mount base material is processed, for example, to form a cavity for storing surface mount components, and cover tape is applied to the surface of the carrier tape mount base while storing the surface mount components in the cavity portion. After being heat-sealed, it is used as a carrier tape.

かかるキャリアテープ台紙基材は、2つの種類に大別される。一つは、プラスチック原料を主成分としてなるものであり、もう一つは、紙などのパルプ繊維を主成分としてなるものである。   Such carrier tape mount base materials are roughly classified into two types. One is composed mainly of plastic raw materials, and the other is composed mainly of pulp fibers such as paper.

しかしながら、パルプ繊維を主成分としてなるものにおいては、装填していた表面実装部品である電子部品などが腐食してしまうという問題があった。   However, in the case of using pulp fiber as a main component, there has been a problem that an electronic component which is a surface-mounted component that has been loaded is corroded.

従って、本発明の目的は、装填していた表面実装部品である電子部品などが腐食して劣化することがない、パルプ原料を主成分とするキャリアテープ台紙基材を提供することにある。   Accordingly, an object of the present invention is to provide a carrier tape mount base material mainly composed of a pulp raw material, in which an electronic component or the like that is a surface-mounted component that has been loaded does not corrode and deteriorate.

本発明者らは、上記の課題を解消すべく鋭意検討した結果、表面実装部品は、キャリアテープ台紙基材に配合されていた硫酸バンドが硫酸イオンとして残留し、この残留した硫酸イオンにより腐食することを知見した。すなわち、通常、キャリアテープには紙層間強度を高めておくために紙力増強剤を大量に配合するが、この紙力増強剤を紙層中に効率よく歩留らせ、紙力増強剤の効果を発現させるためには、パルプスラリーのpHを5前後とする必要があり、pHを調整するために硫酸バンドを使用する。そして、このように硫酸バンドを使用するため、最終製品であるキャリアテープ中に硫酸イオンが残留してしまうことを知見し、かかる知見に基づいて本発明を完成するに至った。   As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the surface mount component has a sulfate band mixed as a sulfate ion remaining in the carrier tape mount base material, and corrodes due to the remaining sulfate ion. I found out. That is, a carrier tape usually contains a large amount of a paper strength enhancer in order to increase the strength between the paper layers, but this paper strength enhancer is efficiently retained in the paper layer. In order to exhibit the effect, the pH of the pulp slurry needs to be around 5, and a sulfuric acid band is used to adjust the pH. And since the sulfate band was used in this way, it was found that sulfate ions remained in the final carrier tape, and the present invention was completed based on this finding.

すなわち、本発明は、複数の層を具備する多層抄き合わせ構造を有し、各層がそれぞれパルプ原料を主成分とするキャリアテープ台紙基材であって、表面のpHが6.0〜8.0、残留硫酸イオン量が500ppm未満とされたことを特徴とするキャリアテープ素材である。本発明では、前記複数の層のそれぞれにパルプ原料100重量部に対して、紙力増強剤を1.0〜8.0重量部配合するのが好ましい。紙力増強剤を添加する場合、ポリエチレンオキサイドを主成分とする増粘剤を0.1〜1.0重量部配合するのは好ましい。また紙力増強剤を添加する場合、プレスパート直前の湿紙水分率を75〜80重量%に調整するのが好ましい。   That is, the present invention has a multi-layered laminated structure having a plurality of layers, each layer being a carrier tape mount base material mainly composed of a pulp raw material, and having a surface pH of 6.0-8. 0, a carrier tape material characterized in that the amount of residual sulfate ions is less than 500 ppm. In this invention, it is preferable to mix | blend 1.0-8.0 weight part of paper strength enhancers with respect to 100 weight part of pulp raw materials in each of these layers. When a paper strength enhancer is added, it is preferable to add 0.1 to 1.0 parts by weight of a thickener mainly composed of polyethylene oxide. Moreover, when adding a paper strength enhancer, it is preferable to adjust the moisture content of the wet paper immediately before the press part to 75 to 80% by weight.

また、これらのキャリアテープ素材を用いてなるキャリアテープも本発明に含まれる。   In addition, carrier tapes using these carrier tape materials are also included in the present invention.

本発明のキャリアテープ台紙基材は、パルプ原料を主成分とし、装填していた表面実装部品である電子部品などが腐食してしまうことがない、ものである。   The carrier tape mount base material of the present invention has a pulp raw material as a main component and does not corrode electronic components that are surface-mounted components that have been loaded.

以下、本発明を更に詳細に説明する。
本発明のキャリアテープ台紙基材は、複数の層を具備する多層抄き合わせ構造を有し、各層がそれぞれパルプ原料を主成分とするキャリアテープ台紙基材であって、表面が特定のpHを有し、残留硫酸イオン量が特定の範囲内であることを特徴とする。
以下、更に詳細に説明する。
本発明のキャリアテープ台紙基材は、複数の層を具備する多層抄き合わせ構造を有する。ここで、複数の層は、少なくとも、表面層、裏面層及び両層間に位置する中間層の3層により構成されているのが好ましい。
Hereinafter, the present invention will be described in more detail.
The carrier tape mount base material of the present invention has a multi-layered structure comprising a plurality of layers, each layer is a carrier tape mount base material mainly composed of a pulp raw material, and the surface has a specific pH. And having a residual sulfate ion amount within a specific range.
This will be described in more detail below.
The carrier tape mount substrate of the present invention has a multi-layered structure having a plurality of layers. Here, the plurality of layers are preferably composed of at least three layers of a front surface layer, a back surface layer, and an intermediate layer located between both layers.

本発明において、各層の主原料であるパルプ原料としては、特に制限されないが、例えば、ダグラスファー、ラジアータパイン、杉、松などの針葉樹;ユーカリ、オークなどの広葉樹を主原料としたクラフトパルプ(KP)、セミケミカルパルプ(SCP)、砕木パルプ(GP)、ケミグランドパルプ(CGP)、リファイナーグランドパルプ(RGP)、ディンキングパルプ(DIP)、ウエストパルプ(WP)などが挙げられ、使用に際しては単独もしくは2種以上混合して用いることができる。ただし、表面実装部品への影響という観点から填料が少ない方がよい場合は、DIPやWP等の古紙パルプよりもバージンパルプを用いる方が好ましい。   In the present invention, the pulp raw material which is the main raw material of each layer is not particularly limited, but, for example, coniferous trees such as Douglas fir, radiata pine, cedar and pine; ), Semi-chemical pulp (SCP), ground wood pulp (GP), chemi-ground pulp (CGP), refiner ground pulp (RGP), dinking pulp (DIP), waist pulp (WP) and the like. Alternatively, two or more kinds can be mixed and used. However, when it is better to use less filler from the viewpoint of influence on the surface-mounted component, it is preferable to use virgin pulp rather than waste paper pulp such as DIP and WP.

本発明のキャリアテープ台紙基材を、上述の表面層、裏面層及び中間層により形成する場合は、それぞれ同じパルプ原料を用いて形成しても良く、また異なるパルプ原料を用いて形成しても良い。具体的には、表面層、裏面層は針葉樹、広葉樹を原料としたクラフトパルプ(KP)を用い、中間層は、針葉樹、広葉樹を原料としたクラフトパルプ(KP)若しくはディインキングパルプ(DIP)を用いるのが、本発明の所望の効果を得るために好ましい。   When the carrier tape mount base material of the present invention is formed by the above-mentioned front surface layer, back surface layer and intermediate layer, each may be formed using the same pulp raw material, or may be formed using different pulp raw materials. good. Specifically, kraft pulp (KP) made from softwood and hardwood is used for the front and back layers, and kraft pulp (KP) or diinking pulp (DIP) made from softwood and hardwood as the intermediate layer. Is preferable in order to obtain the desired effect of the present invention.

また、上記の複数の層の各層それぞれには、各層間の層間強度を向上させるために、紙力増強剤を、パルプ原料100重量部に対して1.0〜8.0重量部配合し、2.5〜6.0重量部配合されているのが好ましい。
紙力増強剤を1.0重量部以上とすることにより、層間強度をより向上させることができる。なお、8.0重量部を超えると、層間強度の更なる向上は望めないばかりか、抄紙機設備に汚れが付着したり、排水中の汚濁物質が増加する等の問題が発生するため好ましくない。
上記紙力増強剤としては、下記の化合物・市販品などが挙げられる。
アニオン性ポリアクリルアミド、カチオン性ポリアクリルアミド、両性ポリアクリルアミド、ポリビニルアルコール、澱粉、カイメン。
Moreover, in order to improve the interlaminar strength between the respective layers, 1.0 to 8.0 parts by weight of a paper strength enhancer is added to 100 parts by weight of the pulp raw material in each of the plurality of layers. It is preferable that 2.5-6.0 weight part is mix | blended.
By setting the paper strength enhancer to 1.0 part by weight or more, the interlayer strength can be further improved. In addition, if the amount exceeds 8.0 parts by weight, not only can the interlayer strength not be further improved, but also problems such as contamination of the paper machine equipment and increase of pollutants in the wastewater may occur. .
Examples of the paper strength enhancer include the following compounds and commercial products.
Anionic polyacrylamide, cationic polyacrylamide, amphoteric polyacrylamide, polyvinyl alcohol, starch, sponge.

そして、本発明のキャリアテープ台紙基材の表面のpHは、6.0〜8.0であり、好ましくは6.3〜7.8である。
また、前記の特定の残留硫酸イオン量は500ppm未満であり、好ましくは250ppm未満である。
上記pHが6.0未満又は前記残留硫酸イオンが500ppm以上であると、表面実装品の腐食が生じる。
pH及び残留硫酸イオンを上述の範囲内とするには、原料のpHを調整したり、硫酸バンドの配合量を抑えたり、重炭酸ソーダ、炭酸カルシウム、アンモニア水等のアルカリ性薬品を添加する等して適宜調整するとよい。
And the pH of the surface of the carrier tape mount base material of this invention is 6.0-8.0, Preferably it is 6.3-7.8.
The specific residual sulfate ion amount is less than 500 ppm, preferably less than 250 ppm.
When the pH is less than 6.0 or the residual sulfate ion is 500 ppm or more, the surface mount product is corroded.
In order to make the pH and residual sulfate ions within the above-mentioned ranges, the pH of the raw material is adjusted, the blending amount of the sulfuric acid band is suppressed, alkaline chemicals such as sodium bicarbonate, calcium carbonate, and aqueous ammonia are added as appropriate. Adjust it.

また、前記の複数の層のそれぞれに、該紙力増強剤の効果をより向上させるために、ポリエチレンオキサイドを主成分とする増粘剤をパルプ原料100重量部に対して0.1〜1.0重量部、好ましくは0.2〜0.5重量部添加し、且つプレスパート直前の湿紙水分率を75〜80%、好ましくは76〜80%、より好ましくは78〜79.5%に調整しておくのが好ましい。   Moreover, in order to further improve the effect of the paper strength enhancer in each of the plurality of layers, a thickener containing polyethylene oxide as a main component is added in an amount of 0.1 to 1. 0 part by weight, preferably 0.2 to 0.5 part by weight, and wet paper moisture content immediately before the press part is 75 to 80%, preferably 76 to 80%, more preferably 78 to 79.5%. It is preferable to adjust.

本発明者らは、各層からなる湿紙のプレスパート直前の湿紙水分率(プレスパート前までの脱水速度)は、湿紙の地合及び紙力増強剤の発現効果に重大な影響を及ぼすことを知見した。湿紙のZ軸方向の水分移動が速すぎる、すなわち、水分率が低い場合、不均一な地合が形成されやすく、また水分移動が遅すぎる、すなわち水分率が高すぎる場合、プレスパートで一気に脱水しなければならず、その結果潰れ地合になる、これら2つのパターンは相反するものであるが、いずれの場合でも紙力増強剤の発現効果が悪くなり、その結果、キャリアテープ台紙基材のZ軸方向の紙層間の強度が低下する。その結果、キャリアテープの加工中若しくは運搬中に紙層間で剥離し、装填された電子部品が脱落するという問題が発生する。この問題は、特に前記キャリアテープ加工工程で発生し易く、最も重大な品質欠陥といえるものである。   The inventors of the present invention have a significant effect on the wet paper web moisture content (dehydration rate before the press part) immediately before the press part of each layer, and on the wet paper formation and the effect of the paper strength enhancer. I found out. If the moisture movement of the wet paper in the Z-axis direction is too fast, that is, if the moisture content is low, uneven formation is likely to be formed, and if the moisture migration is too slow, that is, if the moisture content is too high, the press part These two patterns, which must be dewatered and result in crushing, are contradictory, but in any case, the expression effect of the paper strength enhancer deteriorates, and as a result, the carrier tape base material The strength between the paper layers in the Z-axis direction decreases. As a result, there arises a problem that the electronic tape is peeled off due to peeling between the paper layers during processing or transportation of the carrier tape. This problem is particularly likely to occur in the carrier tape processing step and can be said to be the most serious quality defect.

さらに不均一な地合となったり、潰れ地合が発生した場合、シート厚みのバラツキが大きくなり、その結果キャリアテープ台紙基材のスリット加工工程において、隣り合う巻取りが互いに噛み込み合い、操業性を著しく低下させる問題が生じる(参考資料:特願2002−90604)。
また、パルプ原料のスラリーの粘性も地合に影響する。すなわち、パルプ繊維と紙力増強剤などを混合したスラリーが適正な粘度を有していれば、パルプ繊維が均一に分散されてワイヤー上で薄く均一に広がり、良好な地合を形成することができ、その結果、紙力増強剤の発現効果も向上する。そこで、パルプ原料のスラリーを作製するに際して、上記増粘剤を添加する。
In addition, when uneven formation or crushing formation occurs, the variation in sheet thickness increases, and as a result, adjacent windings are engaged with each other in the slit processing process of the carrier tape mount base material, thereby improving operability. (Reference material: Japanese Patent Application No. 2002-90604) occurs.
Moreover, the viscosity of the pulp raw material slurry also affects the formation. In other words, if the slurry mixed with pulp fiber and paper strength enhancer has an appropriate viscosity, the pulp fiber can be uniformly dispersed and spread thinly and evenly on the wire to form a good formation. As a result, the expression effect of the paper strength enhancer is also improved. Therefore, the thickener is added when producing a slurry of pulp raw material.

上記のポリエチレンオキサイドを主成分とする増粘剤としては、例えば、明成化学工業(株)製、商品名「アルコックス」;住友精化(株)製、商品名「PEO−PFZ」等を挙げることができる。
なお、上記増粘剤の最適な配合量は、原料パルプの種類、フリーネスによって異なり、また円網抄紙機の場合シリンダーバットに使用するワイヤーのメッシュ径やバット内の液面の高さなどによって異なるが、上述の範囲内とすれば、条件が異なっていても十分な効果の向上が見られる。
Examples of the thickener containing polyethylene oxide as a main component include Meisei Chemical Industry Co., Ltd., trade name “Alcox”; Sumitomo Seika Co., Ltd., trade name “PEO-PFZ”, and the like. be able to.
The optimum blending amount of the above thickener varies depending on the type and freeness of the raw pulp, and in the case of a circular paper machine, it varies depending on the mesh diameter of the wire used for the cylinder bat and the height of the liquid level in the bat. However, if it is in the above-mentioned range, even if the conditions are different, a sufficient improvement in effect can be seen.

すなわち、上記増粘剤の添加量を上述の範囲内とすること及び上記湿紙水分率を上述の範囲内とすることにより、原料スラリーが発泡することなく均一な地合が得られ、紙力増強剤の効果を十分に発揮させることができる。また、上記増粘剤を上述の範囲を超えて添加すると、地合改善に効果があるものの、他方、原料スラリーを発泡させる作用もあるため、紙表面に欠陥が発生する場合があるので好ましくない。   That is, by making the addition amount of the thickener within the above range and the wet paper moisture content within the above range, a uniform formation can be obtained without foaming the raw slurry, and paper strength The effect of the enhancer can be sufficiently exhibited. Moreover, adding the above thickener beyond the above range is not preferable because it can improve the formation, but also has the effect of foaming the raw material slurry, which may cause defects on the paper surface. .

プレスパート直前の湿紙水分率は、円網抄紙機の場合、シリンダーバットのメッシュ径、シリンダ、バットを押さえるクーチロールの圧力、サクションバートの真空値等を適宜調節することによって上記の範囲とすることができる。
また、各層には、本発明の所望の効果を損なわない範囲で、種々添加剤を添加することができる。具体的には、本発明のキャリアテープを、上述の3層構造とする場合には、表面層、裏面層、中間層いずれの層にも、歩留り向上剤、着色剤、泡消剤などを用いることができる。
In the case of a circular net paper machine, the wet paper web moisture content immediately before the press part should be within the above range by appropriately adjusting the mesh diameter of the cylinder bat, the pressure of the couch roll that holds the bat, the vacuum value of the suction bar, etc. Can do.
Moreover, various additives can be added to each layer in the range which does not impair the desired effect of this invention. Specifically, when the carrier tape of the present invention has the above-described three-layer structure, a yield improver, a colorant, an antifoaming agent, etc. are used for any of the surface layer, the back layer, and the intermediate layer. be able to.

次に、本発明のキャリアテープ台紙基材について図面を参照して更に詳細に説明する。
ここで、図1は、本発明のキャリアテープ台紙基材の好ましい1実施形態を示す側面図であり、図2は、本発明のキャリアテープ台紙基材を用いて形成されてなるキャリアテープの好ましい1実施形態を示す平面図であり、図3は、図2のII−II断面図である。
図1に示す本実施形態のキャリアテープ台紙基材10は、複数の層が、表面層11、中間層12及び裏面層13により構成された3層構造のテープである。そして、表面層11及び裏面層13の表面には、後述するカバーテープ20を貼り合わせるための接着剤16が塗工されている。なお、接着剤16は、後述する図2及び3に示すようにカバーテープが貼り合わされる部分にのみ塗工されている。
Next, the carrier tape mount substrate of the present invention will be described in more detail with reference to the drawings.
Here, FIG. 1 is a side view showing a preferred embodiment of the carrier tape mount substrate of the present invention, and FIG. 2 is a preferred carrier tape formed using the carrier tape mount substrate of the present invention. FIG. 3 is a plan view showing an embodiment, and FIG. 3 is a cross-sectional view taken along the line II-II in FIG.
The carrier tape mount base material 10 of this embodiment shown in FIG. 1 is a tape having a three-layer structure in which a plurality of layers are constituted by a surface layer 11, an intermediate layer 12, and a back layer 13. And the adhesive agent 16 for bonding the cover tape 20 mentioned later to the surface of the surface layer 11 and the back surface layer 13 is coated. The adhesive 16 is applied only to the portion where the cover tape is bonded, as shown in FIGS.

キャリアテープ台紙基材10全体の厚さは、装填される電子部品の大きさによっても異なるが、300〜1200μmとするのが好ましく、400〜1000μmとするのが更に好ましい。また、坪量は、250〜900g/m2とするのが好ましく、350〜800g/m2とするのが更に好ましい。
このうち、表面層11、裏面層13の厚さは、各々50〜250μmとするのが好ましく、100〜200μmとするのが更に好ましい。また、坪量は、40〜200g/m2とするのが好ましく、80〜160g/m2とするのが更に好ましい。
Although the thickness of the entire carrier tape mount substrate 10 varies depending on the size of the electronic component to be loaded, it is preferably 300 to 1200 μm, and more preferably 400 to 1000 μm. Also, the basis weight may preferably be 250~900g / m 2, even more preferably a 350~800g / m 2.
Of these, the thicknesses of the surface layer 11 and the back surface layer 13 are each preferably 50 to 250 μm, and more preferably 100 to 200 μm. Also, the basis weight may preferably be 40~200g / m 2, even more preferably a 80~160g / m 2.

また、この際用いられる接着剤としては、通常この種のキャリアテープにおいて、キャリアテープ台紙基材とカバーテープとを接着する際に用いるものであれば特に制限なく用いることができる。
そして、本実施形態のキャリアテープ台紙基材10は、図2及び3に示すようにして本発明のキャリアテープ1として使用される。
すなわち、図2に示すように、キャリアテープ台紙基材10には、1側縁側に円形の開口部を所定間隔を開けて設けることにより複数のマージナル部14が形成され、他側縁側に長方形状の開口部を所定間隔を開けて設けることにより複数のキャビティ部15が形成されている。
Moreover, as an adhesive agent used at this time, in this kind of carrier tape, any adhesive agent can be used without particular limitation as long as it is used when adhering the carrier tape mount substrate and the cover tape.
And the carrier tape mount base material 10 of this embodiment is used as the carrier tape 1 of this invention as shown to FIG. 2 and 3. FIG.
That is, as shown in FIG. 2, a plurality of marginal portions 14 are formed in the carrier tape mount base material 10 by providing circular openings at predetermined intervals on one side edge side, and rectangular on the other side edge side. A plurality of cavities 15 are formed by providing the openings at predetermined intervals.

キャリアテープ1は、図2及び3に示すように、カバーテープ20が、キャリアテープ台紙基材10のキャビティ部15を覆うようにキャリアテープ台紙基材10に貼り合わせされて、形成されている。カバーテープ20としては、通常、この種のキャリアテープにおいて、カバーテープとして用いるものであれば特に制限なく用いることができる。   As shown in FIGS. 2 and 3, the carrier tape 1 is formed by bonding the cover tape 20 to the carrier tape mount base material 10 so as to cover the cavity 15 of the carrier tape mount base material 10. As the cover tape 20, this kind of carrier tape can be used without particular limitation as long as it is used as a cover tape.

また、キャビティ部15内には、それぞれ表面実装部品30(本実施形態においては電子部品)が収納されている。従って、キャビティ部15の大きさは、表面実装部品30が収納されるのに必要且つ十分なサイズとするのが好ましい。
そして、使用時には、図3に示すように、カバーテープ20を剥がして、表面実装部品30を露出させた後、特に図示しないが、所望の製品の所定位置に表面実装部品を装填する等して使用する。
Further, in the cavity portion 15, surface mount components 30 (electronic components in the present embodiment) are accommodated. Therefore, the size of the cavity portion 15 is preferably set to a size necessary and sufficient for housing the surface mount component 30.
In use, as shown in FIG. 3, after the cover tape 20 is peeled off to expose the surface mount component 30, the surface mount component is loaded at a predetermined position of a desired product, although not particularly shown. use.

本発明のキャリアテープ台紙基材は、前記パルプ原料及び紙力増強剤などを混合したスラリーを用いて各層を構成する湿紙を、抄紙機ワイヤー上で形成された各層の湿紙をフェルトへ順次転写することにより抄き合わせして多層構造とすることにより製造できる。この際用いることができる抄紙機としては、円網多層抄紙機、ウルトラフォーマー多層抄紙機、ベルボンドフォーマー多層抄紙機などが使用できる。   The carrier tape mount base material of the present invention is a wet paper that forms each layer using a slurry in which the pulp raw material and paper strength enhancer are mixed, and the wet paper of each layer formed on the paper machine wire is sequentially fed to the felt. It can be manufactured by making a sheet by transferring and forming a multilayer structure. As the paper machine that can be used at this time, a circular multi-layer paper machine, an ultraformer multilayer paper machine, a bell bond former multilayer paper machine, or the like can be used.

そして、このように構成された本発明のキャリアテープ台紙基材は、キャリアテープとした場合に、装填した表面実装部品が腐食して劣化することがないものである。
なお、本発明のキャリアテープ台紙基材は、上述の実施形態に何ら制限されるものではなく、本発明の趣旨を逸脱しない範囲で種々変更可能である。
例えば、キャビティ部15をエンボス加工により凹状に形成したキャリアテー−プとしてもよい。
And when the carrier tape mount base material of this invention comprised in this way is set as a carrier tape, the surface-mounted component with which it loaded does not corrode and deteriorate.
In addition, the carrier tape mount base material of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention.
For example, it is good also as a carrier tape which formed the cavity part 15 in the concave shape by the embossing.

次に、実施例及び比較例により本発明を更に詳細に説明するが、本発明は、これらに制限されるものではない。
なお、以下の例において、特に説明しない限り、「部」及び「%」とあるときは、それぞれ「重量部」及び「重量%」を示す。
EXAMPLES Next, although an Example and a comparative example demonstrate this invention further in detail, this invention is not restrict | limited to these.
In the following examples, “parts” and “%” indicate “parts by weight” and “% by weight”, respectively, unless otherwise specified.

〔実施例1〕
以下の形成材料からなる3層抄き合わせ紙によりキャリアテープ台紙基材を作製した。製造は、円網多層抄紙機にて3層構造で抄き合わせることにより行った。また、硫酸バンドは添加しなかった。
[Example 1]
A carrier tape mount base material was prepared from a three-layer laminated paper made of the following forming materials. Manufacture was performed by making a three-layer structure with a circular mesh multilayer paper machine. Moreover, the sulfuric acid band was not added.

<形成材料>
表面層及び裏面層;針葉樹晒クラフトパルプ(NBKP)50%、広葉樹晒クラフトパルプ(LBKP)50%、からなるパルプスラリーをカナディアンスタンダードフリーネス(CSF)450ccに調整した。
中間層;NBKP 25%、LBKP 25%、上物古紙パルプ50%からなるパルプスラリーをCSF350ccに調整した。
<Formation material>
A pulp slurry comprising a front layer and a back layer; 50% softwood bleached kraft pulp (NBKP) and 50% hardwood bleached kraft pulp (LBKP) was adjusted to 450 cc Canadian Standard Freeness (CSF).
Intermediate layer: A pulp slurry consisting of 25% NBKP, 25% LBKP, and 50% fine paper pulp was adjusted to 350 CSF.

<製造方法>
上記層形成材料各々に、パルプ原料100部に対して、アニオン性ポリアクリルアミド系紙力増強剤(商品名:ハーマイドB−15、ハリマ化成株式会社製)を5部、増粘剤(商品名:アルコックスSR、明成化学工業(株)製)を0.4部配合した。なお、硫酸バンドは添加しなかった。
円網多層抄紙機を使用して、3層構造のキャリアテープ台紙基材を得た。この時のプレスパート直前の湿紙水分率を76.5%とした。
得られたキャリアテープ台紙基材の表面pHは6.4であった。また、キャリアテープ台紙基材の残留硫酸イオン量、層間強度、地合、電子部品の腐食性、製造時の操業性の評価を以下の方法にて実施した。
<Manufacturing method>
For each of the above layer forming materials, 5 parts of an anionic polyacrylamide-based paper strength enhancer (trade name: Hermide B-15, manufactured by Harima Kasei Co., Ltd.) and a thickener (trade name: 100 parts by weight). 0.4 part of Alcox SR, manufactured by Meisei Chemical Industry Co., Ltd. was blended. In addition, the sulfuric acid band was not added.
Using a circular multi-layer paper machine, a carrier tape mount base material having a three-layer structure was obtained. The moisture content of the wet paper immediately before the press part at this time was 76.5%.
The surface pH of the obtained carrier tape mount base material was 6.4. Further, the following methods were used to evaluate the amount of residual sulfate ions, interlayer strength, formation, corrosivity of electronic parts, and operability during production of the carrier tape backing substrate.

<試験方法>
・残留硫酸イオン量:キャリアテープ台紙基材中の硫酸イオンを熱水で抽出し、塩化バリウムで沈殿させてその重量を測定し、残留硫酸イオン量を計算した。
・剥離強度:TAPPIUM 522記載の試験方法に準じた。
・電子部品腐食試験:得られたキャリアテープ台紙基材50gを1cm角の小片に断裁し、チップ電子部品50個と混合したものを秤量瓶に入れ、40℃、80%(相対湿度)環境下にて30日間放置した。その後秤量瓶を取り出し、チップ電子部品を一つ一つ顕微鏡で観察し腐食が発生している部品の個数を数えた。
・操業性:抄紙工程や加工工程において、何らかの操業トラブルが発生した場合、その旨を記録した。
<Test method>
-Residual sulfate ion amount: The sulfate ion in the carrier tape backing substrate was extracted with hot water, precipitated with barium chloride, and its weight was measured to calculate the residual sulfate ion amount.
Peel strength: According to the test method described in TAPPIUM 522.
Electronic component corrosion test: 50 g of the obtained carrier tape mount base material was cut into 1 cm square pieces, mixed with 50 chip electronic components, placed in a weighing bottle, and at 40 ° C. and 80% (relative humidity) environment Left for 30 days. Thereafter, the weighing bottle was taken out, and the chip electronic components were observed one by one with a microscope to count the number of components where corrosion occurred.
-Operability: When any operation trouble occurred in the paper making process or processing process, the fact was recorded.

〔実施例2〜実施例5〕
紙力増強剤や増粘剤の配合量や、プレスパート直前の湿紙水分率を変えた以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。
実施例の結果をまとめて表1に示す。
実施例1〜5のキャリアテープ台紙基材は、電子部品の腐食が全く発生することがなく、紙層間の強度も優れていた。また、良好な地合を有し、抄紙工程でも加工工程でも操業トラブルは発生せず、従来の問題を解消することができた。
[Example 2 to Example 5]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that the blending amount of the paper strength enhancer and the thickener and the wet paper moisture content immediately before the press part were changed.
The results of the examples are summarized in Table 1.
The carrier tape mount base materials of Examples 1 to 5 did not cause any corrosion of electronic components, and had excellent strength between paper layers. In addition, it has a good texture, and there are no operational troubles in both the papermaking process and the processing process, and the conventional problems can be solved.

〔比較例1〕
表面層及び裏面層の形成材料いずれにも硫酸バンドを3部配合した以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは5.0であり、プレスパート直前の湿紙水分率は76.5%であった。このキャリアテープ台紙基材は残留硫酸イオンが多く、その結果、電子部品の腐食が発生し、従来の問題点を解消することはできなかった。
[Comparative Example 1]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that 3 parts of a sulfuric acid band was added to both the surface layer and the back layer. The pH at this time was 5.0, and the moisture content of the wet paper immediately before the press part was 76.5%. This carrier tape mount base material has a large amount of residual sulfate ions. As a result, corrosion of electronic parts occurs, and the conventional problems cannot be solved.

〔比較例2〕
キャリアテープ台紙基材の表面のpHを8.2に調整した以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。プレスパート直前の湿紙水分率は76.5%であった。このキャリアテープ台紙基材を作製すると、抄紙機ドライヤー設備に多量の粕が付着し、安定操業が困難であった。
[Comparative Example 2]
A carrier tape mount substrate was produced in the same manner as in Example 1 except that the pH of the surface of the carrier tape mount substrate was adjusted to 8.2. The moisture content of the wet paper immediately before the press part was 76.5%. When this carrier tape mount base material was produced, a large amount of soot adhered to the paper machine dryer equipment, and stable operation was difficult.

〔比較例3〕
紙力増強剤の配合量を0.5部とし、プレスパート直前の湿紙水分率を76.7%とした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.4であり、プレスパート直前の湿紙水分率は76.7%であった。このキャリアテープ台紙基材は紙層間の強度が低く、スリット加工時に層間剥離トラブルが発生し、キャリアテープ台紙基材としては不適であった。
[Comparative Example 3]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that the blending amount of the paper strength enhancing agent was 0.5 part and the wet paper moisture content immediately before the press part was 76.7%. The pH at this time was 6.4, and the moisture content of the wet paper immediately before the press part was 76.7%. This carrier tape mount base material has low strength between paper layers, and trouble with delamination occurs during slit processing, which is unsuitable as a carrier tape mount base material.

〔比較例4〕
増粘剤の配合を中止し、湿紙水分率を76.4%とした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.3であり、プレスパート直前の湿紙水分率は76.4%であった。このキャリアテープ台紙基材は地合が不均一で紙層間の強度が低い上に、スリット加工時に隣り合う巻取りが互いに噛み込み合うトラブルが発生した。
[Comparative Example 4]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that the thickener was stopped and the wet paper moisture content was changed to 76.4%. The pH at this time was 6.3, and the moisture content of the wet paper immediately before the press part was 76.4%. This carrier tape mount base material has a non-uniform texture and low strength between paper layers, and also has a problem that adjacent windings are engaged with each other during slit processing.

〔比較例5〕
ワイヤーパート〜プレスパート間に設置している真空吸引装置の作動条件を調整して脱水を早め、プレスパート直前の湿紙水分率を74.0%にした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.4であった。このキャリアテープ台紙基材は地合が不均一で紙層間の強度が低いほか、スリット加工時に隣り合う巻取りが互いに噛み込み合うトラブルが発生した。
[Comparative Example 5]
Except for adjusting the operating conditions of the vacuum suction device installed between the wire part and the press part to expedite dehydration and setting the moisture content of the wet paper immediately before the press part to 74.0%, the same as in Example 1. A carrier tape mount substrate was prepared. The pH at this time was 6.4. This carrier tape mount base material has a non-uniform texture and low strength between paper layers, and troubles have occurred in which adjacent windings are engaged with each other during slit processing.

〔比較例6〕
ワイヤーパート〜プレスパート間に設置している真空吸引装置を停止させて脱水を遅らせ、プレスパート直前の湿紙水分率を80.5%にした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.3であった。このキャリアテープ台紙基材は潰れ地合と称されるバターンが紙全体に発生した。また、紙層間の強度が低いほか、スリット加工時に隣り合う巻取りが互いに噛み込み合うトラブルが発生した。
[Comparative Example 6]
Carrier tape mount as in Example 1, except that the vacuum suction device installed between the wire part and the press part is stopped to delay dehydration and the wet paper moisture content immediately before the press part is set to 80.5%. A substrate was prepared. The pH at this time was 6.3. In this carrier tape mount base material, a pattern called crushing formation occurred on the entire paper. In addition to the low strength between the paper layers, troubles occurred in which adjacent windings were engaged with each other during slitting.

〔比較例7〕
増粘剤の配合量を1.2部とした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.4であり、プレスパート直前の湿紙水分率は76.3%であった。このキャリアテープ台紙基材は潰れ地合と称されるパターンが紙全体に発生した。このキャリアテープ台紙基材は、抄紙機ワイヤー設備上に筋状の汚れが付着し、連続操業が困難であった。
[Comparative Example 7]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that the blending amount of the thickener was 1.2 parts. The pH at this time was 6.4, and the moisture content of the wet paper immediately before the press part was 76.3%. In this carrier tape mount base material, a pattern called crushing formation occurred on the entire paper. This carrier tape mount base material had streaks on the paper machine wire equipment and was difficult to operate continuously.

〔比較例8〕
紙力増強剤の配合量を9.0部とした以外は、実施例1と同様にしてキャリアテープ台紙基材を作製した。この時のpHは6.4であり、プレスパート直前の湿紙水分率は76.4%であった。このキャリアテープ台紙基材は抄造時、ドライヤー設備及びワイヤー設備上に多量の汚れが付着したほか、排水中の汚濁物質が増加し、排水処理が困難になった。
これら比較例の結果もまとめて表1に示す。
[Comparative Example 8]
A carrier tape backing substrate was prepared in the same manner as in Example 1 except that the blending amount of the paper strength enhancer was 9.0 parts. The pH at this time was 6.4, and the moisture content of the wet paper immediately before the press part was 76.4%. When this carrier tape base material was made, a large amount of dirt adhered to the dryer equipment and wire equipment, and pollutants in the wastewater increased, making it difficult to treat the wastewater.
The results of these comparative examples are also summarized in Table 1.

Figure 2005067734
Figure 2005067734

本発明は、電子部品を装填する際に用いるキャリアテープ台紙基材及びキャリアテープとして適用できるものである。   The present invention can be applied as a carrier tape mount base material and a carrier tape used when electronic components are loaded.

図1は、本発明のキャリアテープ台紙基材の好ましい1実施形態を示す側面図である。FIG. 1 is a side view showing a preferred embodiment of the carrier tape mount substrate of the present invention. 図2は、本発明のキャリアテープ台紙基材を用いて形成されてなるキャリアテープの好ましい1実施形態を示す平面図である。FIG. 2 is a plan view showing a preferred embodiment of a carrier tape formed using the carrier tape mount substrate of the present invention. 図3は、図2のII−II断面図である。3 is a cross-sectional view taken along the line II-II in FIG.

符号の説明Explanation of symbols

10…キャリアテープ台紙基材、11…表面層、12…中間層、13…裏面層、14…マージナル部、15…キャビティ部、16…接着剤、20…カバーテープ。 DESCRIPTION OF SYMBOLS 10 ... Carrier tape mounting base material, 11 ... Surface layer, 12 ... Intermediate layer, 13 ... Back layer, 14 ... Marginal part, 15 ... Cavity part, 16 ... Adhesive, 20 ... Cover tape.

Claims (5)

複数の層を具備する多層抄き合わせ構造を有し、各層がそれぞれパルプ原料を主成分とするキャリアテープ台紙基材であって、
表面のpHが6.0〜8.0、残留硫酸イオン量が500ppm未満とされたことを特徴とするキャリアテープ台紙基材。
It has a multi-layered laminated structure comprising a plurality of layers, and each layer is a carrier tape mount base material mainly composed of pulp raw materials,
A carrier tape base material having a surface pH of 6.0 to 8.0 and a residual sulfate ion content of less than 500 ppm.
前記複数の層それぞれに、パルプ原料100重量部に対して、紙力増強剤を1.0〜8.0重量部配合してなる、請求項1記載のキャリアテープ台紙基材。   The carrier tape base material of Claim 1 formed by mix | blending 1.0-8.0 weight part of paper strength enhancers with respect to 100 weight part of pulp raw materials in each of these several layers. 前記複数の層それぞれに、パルプ原料100重量部に対して、ポリエチレンオキサイドを主成分とする増粘剤を0.1〜1.0重量部配合してなる、請求項2記載のキャリアテープ台紙基材。   The carrier tape mount base according to claim 2, wherein 0.1 to 1.0 parts by weight of a thickener mainly composed of polyethylene oxide is blended with 100 parts by weight of the pulp raw material in each of the plurality of layers. Wood. プレスパート直前の湿紙水分率を75〜80重量%に調整してなる請求項2または3記載のキャリアテープ台紙基材。   The carrier tape mount base material according to claim 2 or 3, wherein the moisture content of the wet paper immediately before the press part is adjusted to 75 to 80% by weight. 請求項1〜4のいずれか1項に記載のキャリアテープ台紙基材を用いてなるキャリアテープ。   The carrier tape which uses the carrier tape mount base material of any one of Claims 1-4.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101321465B1 (en) 2005-10-25 2013-10-25 스미토모 세이카 가부시키가이샤 Papermaking method and papermaking system
JP2014512463A (en) * 2012-03-12 2014-05-22 浙江潔美電子科技有限公司 Manufacturing method of carrier tape base paper
CN104088199A (en) * 2014-06-26 2014-10-08 江西弘泰电子信息材料有限公司 Paper for packaging carrier tape and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101321465B1 (en) 2005-10-25 2013-10-25 스미토모 세이카 가부시키가이샤 Papermaking method and papermaking system
JP2014512463A (en) * 2012-03-12 2014-05-22 浙江潔美電子科技有限公司 Manufacturing method of carrier tape base paper
CN104088199A (en) * 2014-06-26 2014-10-08 江西弘泰电子信息材料有限公司 Paper for packaging carrier tape and preparation method thereof

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