JPH0672756A - Production of green sheet - Google Patents

Production of green sheet

Info

Publication number
JPH0672756A
JPH0672756A JP4225477A JP22547792A JPH0672756A JP H0672756 A JPH0672756 A JP H0672756A JP 4225477 A JP4225477 A JP 4225477A JP 22547792 A JP22547792 A JP 22547792A JP H0672756 A JPH0672756 A JP H0672756A
Authority
JP
Japan
Prior art keywords
green sheet
solvent
butanol
resin
organic solvent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4225477A
Other languages
Japanese (ja)
Inventor
Kazunori Akaho
和則 赤穂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP4225477A priority Critical patent/JPH0672756A/en
Publication of JPH0672756A publication Critical patent/JPH0672756A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compositions Of Oxide Ceramics (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)

Abstract

PURPOSE:To prevent cracking by mixing ceramic as starting material, a sintering aid, a resin and a plasticizer with a prescribed org. solvent and carrying out forming. CONSTITUTION:Alumina powder is mixed with a sintering aid such as SiO2, a resin such as butyral resin and a plasticizer such as dibutyl phthalate to obtain a mixture and N-butanol is added to xylene by >=65% to obtain an org. solvent. This org. solvent is mixed with the mixture to obtain a slurry having desired proper viscosity. This slurry is defoamed, formed into a tape shape by a doctor blade method or other method and dried at 60-120 deg.C to produce the objective green sheet.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はグリーンシートの製造方
法、より詳細にはグリーンシート原料に添加する溶剤と
してN−ブタノール及びキシレンの混合液を用いたグリ
ーンシートの製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a green sheet, and more particularly to a method for producing a green sheet using a mixed liquid of N-butanol and xylene as a solvent added to a raw material for the green sheet.

【0002】[0002]

【従来の技術】近年、アルミナ粒子を主成分とした積層
基板には、半導体素子(LSI、ICなど)が搭載され
て小型電子部品が構成され、通信機器、コンピュータな
どに使用されており、これらの製品の高速化、高性能
化、小型化、薄型化が急速に進められてきている。
2. Description of the Related Art In recent years, semiconductor elements (LSI, IC, etc.) are mounted on a laminated substrate containing alumina particles as a main component to form small electronic components, which are used in communication devices, computers, etc. The speed, performance, miniaturization, and thinning of products have been rapidly promoted.

【0003】従来、積層基板の製造は、ドクターブレー
ド法などによりグリーンシートを作製し、前記グリーン
シートをそれぞれの目的と用途に応じた形態に加工し、
ラミネートしたものを焼成することにより行なわれてい
る。
Conventionally, in the production of a laminated substrate, a green sheet is produced by a doctor blade method or the like, and the green sheet is processed into a form according to each purpose and use,
It is performed by firing a laminated product.

【0004】また前記グリーンシートはアルミナ粉末に
焼結助剤、ブチラール樹脂、可塑剤、有機溶剤(キシレ
ンなど)等の添加剤を混合し、スラリー化した後、ドク
ターブレード法と呼ばれるテープ成形方法を用いること
により作製されていた。
The green sheet is prepared by mixing alumina powder with additives such as a sintering aid, a butyral resin, a plasticizer and an organic solvent (such as xylene) to form a slurry, and then applying a tape forming method called a doctor blade method. It was produced by using.

【0005】また、この他にアルミナ粉末に焼結助剤と
トルエン又はキシレンを主成分とする有機溶剤とメタク
リル酸系のコポリマー樹脂からなる結合剤と可塑剤とを
用いてグリーンシートを作製する方法(特開平2ー16
795号公報)が提案されている。
In addition to the above, a method for producing a green sheet by using a sintering aid, an organic solvent containing toluene or xylene as a main component, a binder made of a methacrylic acid type copolymer resin, and a plasticizer in addition to alumina powder. (Japanese Patent Laid-Open No. 2-16
No. 795) has been proposed.

【0006】[0006]

【発明が解決しようとする課題】上記したように有機溶
剤としてキシレン等を用いてグリーンシートを作製した
場合、前記グリーンシートにひび割れが入るものが生じ
るという課題があった。
As described above, when a green sheet is produced by using xylene or the like as an organic solvent, there is a problem that some of the green sheets may be cracked.

【0007】本発明はこのような課題に鑑み発明された
ものであって、グリーンシートにおけるひび割れを無く
すことができるグリーンシートの製造方法を提供するこ
とを目的としている。
The present invention has been invented in view of the above problems, and an object of the present invention is to provide a method for manufacturing a green sheet which can eliminate cracks in the green sheet.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に本発明に係るグリーンシートの製造方法は、セラミッ
ク原料、焼結用助剤、樹脂、可塑剤及び有機溶剤を混合
し、該混合物が適性粘度になった後、テープ成形するグ
リーンシートの製造方法において、前記有機溶剤がキシ
レンとN−ブタノールの混合物であって、前記有機溶剤
に前記N−ブタノールを65重量%以上含有させること
を特徴としている。
In order to achieve the above object, a method for producing a green sheet according to the present invention comprises mixing a ceramic raw material, a sintering aid, a resin, a plasticizer and an organic solvent, and the mixture is In the method for producing a green sheet for tape molding after reaching an appropriate viscosity, the organic solvent is a mixture of xylene and N-butanol, and the organic solvent contains 65% by weight or more of the N-butanol. I am trying.

【0009】[0009]

【作用】上記方法によれば、スラリー中における前記有
機溶剤の蒸発温度や蒸発時間が調節され、作製されたグ
リーンシートにおけるひび割れの発生を無くすことが可
能となる。
According to the above method, the evaporation temperature and the evaporation time of the organic solvent in the slurry are adjusted, and the generation of cracks in the produced green sheet can be eliminated.

【0010】[0010]

【実施例及び比較例】以下、本発明に係るグリーンシー
トの製造方法の実施例及び比較例について説明する。ま
ず、アルミナ粉末100重量部に対し、焼結助剤(Si
2 、MgO等)を10重量部添加した後ボールミルで
24時間粉砕混合し、乾燥させる。その後解砕し、ブチ
ラール樹脂を8重量部と、可塑剤(ジブチルフタレート
(DBP)、アジピン酸ジオクチル(DOA)等)を2
重量部と、キシレンとN−ブタノールを下記の表1に示
す割合で混合した溶剤を16重量部とを添加し、ボール
ミルで混合し、スラリーとする。
EXAMPLES AND COMPARATIVE EXAMPLES Examples and comparative examples of the green sheet manufacturing method according to the present invention will be described below. First, with respect to 100 parts by weight of alumina powder, a sintering aid (Si
10 parts by weight of O 2 , MgO, etc.) are added, and the mixture is pulverized and mixed in a ball mill for 24 hours and dried. Then, the mixture was crushed, and 8 parts by weight of butyral resin and 2 parts of a plasticizer (dibutyl phthalate (DBP), dioctyl adipate (DOA), etc.)
By weight, 16 parts by weight of a solvent prepared by mixing xylene and N-butanol in the proportions shown in Table 1 below are added and mixed by a ball mill to form a slurry.

【0011】[0011]

【表1】 [Table 1]

【0012】その後、スラリーの脱泡を行ない、ドクタ
ーブレード法を用いてこのスラリーをテープ成形し、こ
の後、60℃〜120℃の温度範囲で乾燥させてグリー
ンシートを作製する。
Thereafter, the slurry is defoamed, the slurry is tape-molded by using a doctor blade method, and then the slurry is dried in a temperature range of 60 ° C. to 120 ° C. to produce a green sheet.

【0013】表1には上記グリーンシートの製造方法を
用いて作製されたグリーンシートにひび割れが1m長さ
当たり幾つ発生したかを調べその結果を併せて示した。
Table 1 shows how many cracks were generated per 1 m length in the green sheet produced by the above-mentioned method for producing the green sheet, and the results are also shown.

【0014】表1から明らかなように、試験No.1〜
4に示した比較例のように、N−ブタノールが65%未
満と低い場合、グリーンシートにひび割れが発生してお
り、試験No.5〜11に示した実施例のようにN−ブ
タノールが65%以上の場合、グリーンシートにひび割
れが発生することがなく良質のグリーンシートが得られ
た。
As is clear from Table 1, the test No. 1 to
As in the comparative example shown in FIG. 4, when N-butanol was as low as less than 65%, the green sheet was cracked, and the test No. When the content of N-butanol was 65% or more as in Examples 5 to 11, a good quality green sheet was obtained without cracking in the green sheet.

【0015】このようにN−ブタノールとキシレンとの
混合割合を調整することにより、有機溶剤の蒸発温度及
び蒸発速度を調節することができ、ひび割れの生じない
グリーンシートを作製することができる。
By thus adjusting the mixing ratio of N-butanol and xylene, the evaporation temperature and the evaporation rate of the organic solvent can be adjusted, and a green sheet free from cracks can be produced.

【0016】[0016]

【発明の効果】以上詳述したように本発明に係るグリー
ンシートの製造方法においては、セラミック原料、焼結
用助剤、樹脂、可塑剤及び有機溶剤を混合し、該混合物
が適性粘度になった後、テープ成形するグリーンシート
の製造方法において、前記有機溶剤がキシレンとN−ブ
タノールの混合物であって、前記有機溶剤に前記N−ブ
タノールを65重量%以上含有させるので、スラリー中
における前記有機溶剤の蒸発温度や蒸発時間を調節する
ことができ、ひび割れの発生しないグリーンシートを作
製することができる。
As described in detail above, in the method for producing a green sheet according to the present invention, a ceramic raw material, a sintering aid, a resin, a plasticizer and an organic solvent are mixed, and the mixture has an appropriate viscosity. After that, in the method for producing a green sheet for tape molding, the organic solvent is a mixture of xylene and N-butanol, and the organic solvent contains 65% by weight or more of the N-butanol. The evaporation temperature and evaporation time of the solvent can be adjusted, and a green sheet without cracks can be produced.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 H05K 3/46 H 6921−4E ─────────────────────────────────────────────────── ───Continued from the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location H05K 3/46 H 6921-4E

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】セラミック原料、焼結用助剤、樹脂、可塑
剤及び有機溶剤を混合し、該混合物が適性粘度になった
後、テープ成形するグリーンシートの製造方法におい
て、前記有機溶剤がキシレンとN−ブタノールの混合物
であって、前記有機溶剤に前記N−ブタノールを65重
量%以上含有させることを特徴とするグリーンシートの
製造方法。
1. A method for producing a green sheet, comprising mixing a ceramic raw material, a sintering aid, a resin, a plasticizer and an organic solvent, and tape-forming after the mixture has an appropriate viscosity. The organic solvent is xylene. And N-butanol, wherein the organic solvent contains 65% by weight or more of the N-butanol.
JP4225477A 1992-08-25 1992-08-25 Production of green sheet Pending JPH0672756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4225477A JPH0672756A (en) 1992-08-25 1992-08-25 Production of green sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4225477A JPH0672756A (en) 1992-08-25 1992-08-25 Production of green sheet

Publications (1)

Publication Number Publication Date
JPH0672756A true JPH0672756A (en) 1994-03-15

Family

ID=16829936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4225477A Pending JPH0672756A (en) 1992-08-25 1992-08-25 Production of green sheet

Country Status (1)

Country Link
JP (1) JPH0672756A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10182239A (en) * 1996-12-18 1998-07-07 Kyocera Corp Production of green sheet for ceramic substrate
JP2004158473A (en) * 2002-09-13 2004-06-03 Kyocera Corp Method of manufacturing ceramic wiring board
JP2017114117A (en) * 2015-12-18 2017-06-29 Dic株式会社 Method of producing ceramic body and dispersion used therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10182239A (en) * 1996-12-18 1998-07-07 Kyocera Corp Production of green sheet for ceramic substrate
JP2004158473A (en) * 2002-09-13 2004-06-03 Kyocera Corp Method of manufacturing ceramic wiring board
JP2017114117A (en) * 2015-12-18 2017-06-29 Dic株式会社 Method of producing ceramic body and dispersion used therefor

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