JPH11107112A - Glass cloth - Google Patents
Glass clothInfo
- Publication number
- JPH11107112A JPH11107112A JP9287617A JP28761797A JPH11107112A JP H11107112 A JPH11107112 A JP H11107112A JP 9287617 A JP9287617 A JP 9287617A JP 28761797 A JP28761797 A JP 28761797A JP H11107112 A JPH11107112 A JP H11107112A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- glass cloth
- glass
- weft
- density
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
Landscapes
- Laminated Bodies (AREA)
- Woven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気・電子分野に
おいて使用されるプリント配線基板の基材として用いら
れるガラスクロスの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in glass cloth used as a base material of a printed wiring board used in the electric and electronic fields.
【０００２】[0002]
【従来の技術】一般に、プリント配線基板は銅張り積層
板にドリル穴あけ、穴洗浄、無電解銅メッキ等を施す公
知の加工法により作られるが、これらの加工工程中に銅
張り積層板の寸法が変化することが一般的に知られてい
る。ここで使用される銅張り積層板は、ガラスクロスに
エポキシ樹脂等の熱硬化性樹脂を含浸したプリプレグを
プレス機により積層、成形して製造されるが、これに使
用されるガラスクロスはＪＩＳ Ｒ３４１４に示されて
いるものが一般に用いられる。2. Description of the Related Art In general, printed wiring boards are manufactured by a known processing method of drilling holes, cleaning holes, electroless copper plating, and the like in a copper-clad laminate. Is generally known to change. The copper-clad laminate used here is manufactured by laminating and molding a prepreg obtained by impregnating a thermosetting resin such as an epoxy resin into a glass cloth with a press machine, and the glass cloth used for this is JIS R3414. Are generally used.
【０００３】また、用いられるガラスクロスは積層板の
構成等を考慮し、積層板の寸法変化、そり及びねじれ等
を減じる方向で選択されてはいるが、ＪＩＳ規格に規定
されているガラスクロスでは根本的な解決にはならず、
新規な構成のガラスクロスが望まれている。例えば、ガ
ラスクロスを構成するガラス糸の隣同士の間隔が広いた
め、プリプレグにおいて糸と糸の隙間に多量の樹脂が分
布して、樹脂の硬化収縮のばらつきが存在すること、ま
た、糸と糸の間隔が大きいため糸が動き易くなること、
或いはタテ方向、ヨコ方向の織り密度の違いによるバラ
ンスの悪さ等に起因する積層板の寸法変化のばらつき、
さらにタテ方向、ヨコ方向の異方性（以下、異方性）の
問題が生じている。[0003] The glass cloth to be used is selected in consideration of the configuration of the laminated plate and the like in order to reduce the dimensional change, warpage, and twist of the laminated plate. It is not a fundamental solution,
A glass cloth having a new configuration is desired. For example, since the distance between the adjacent glass yarns constituting the glass cloth is large, a large amount of resin is distributed in the gap between the yarns in the prepreg, and there is a variation in the curing shrinkage of the resin. That the yarn is easy to move due to the large spacing between
Or variations in the dimensional change of the laminate due to poor balance due to differences in weaving density in the vertical direction and horizontal direction,
Further, there is a problem of anisotropy in the vertical and horizontal directions (hereinafter, anisotropic).
【０００４】最近のように、回路パタ−ンが高密度にな
ると、回路パタ−ンのネガ作成時やスル−ホ−ル穴開け
工程時に必要なスケ−ルファクタ−の補正作業に高度な
技術が必要となり、特にプリント配線基板のワークサイ
ズが大きい場合には、多くの部品位置決めマ−クが必要
となる。これに対して、ＪＩＳ規格に規定されているガ
ラスクロスに開繊加工等の物理加工を施し、糸束を拡げ
る試み、また、タテ方向、ヨコ方向の織り密度を単に同
じにしたガラスクロスの提案等もなされているが、いず
れも十分ではなく、問題の解決には至っていない。As the circuit pattern becomes denser as recently, advanced technology is required for correcting the scale factor required for producing a negative of the circuit pattern or for forming a through hole. In particular, when the size of the work of the printed wiring board is large, many parts positioning marks are required. On the other hand, an attempt to expand the yarn bundle by applying physical processing such as fiber opening to the glass cloth specified in the JIS standard, and to propose a glass cloth simply having the same weaving density in the vertical and horizontal directions However, none of them are sufficient and the problem has not been solved.
【０００５】[0005]
【発明が解決しようとする課題】本発明はスケ−ルファ
クタ−の補正作業に高度な技術を必要とせず、かつ少な
い部品位置決めマ−クで容易に部品の自動挿入ができる
ようにするために、銅張り積層板からプリント配線基板
を作成する工程中での基板の寸法変化のばらつきを小さ
くし、また特にタテ方向、ヨコ方向の異方性を小さくす
ることを可能とするガラスクロスを提供することにあ
る。SUMMARY OF THE INVENTION The present invention does not require advanced technology for the scale factor correction operation, and enables automatic insertion of components easily with a small number of component positioning marks. Provided is a glass cloth capable of reducing variation in dimensional change of a substrate during a process of forming a printed wiring board from a copper-clad laminate and reducing anisotropy particularly in a vertical direction and a horizontal direction. It is in.
【０００６】[0006]
【課題を解決するための手段】本発明者は上記課題につ
いて種々検討した結果、積層板用平織ガラスクロスの組
織を (イ) ガラス糸同士の間隔、 (ロ) タテ糸又はヨコ
糸の織り密度と織り縮み率との関係、 (ハ) 嵩密度を或
る特定範囲に設定することにより、製造工程中での基板
の寸法変化のばらつきを小さく、またタテ糸、ヨコ糸の
異方性を小さくできることを見出し、本発明を完成する
に至った。即ち、本発明は： タテ糸又はヨコ糸のどちらか或いは両方が４５ｔｅ
ｘ以下の糸であるガラス糸から織成されてなる平織り組
織のガラスクロスにおいて、(a) タテ方向及びヨコ方向
ともにガラスクロスを構成するガラス糸とガラス糸の間
隔が隙間を形成するガラス糸の糸幅の３０％未満で、
(b)タテ糸の織り密度（ＣＴ）とヨコ糸の織り密度（Ｃ
Ｙ）の比をタテ糸の織り縮み率（ＤＴ）とヨコ糸の織り
縮み率（ＤＹ）の比で除した下記数式（１）：As a result of various studies on the above-mentioned problems, the present inventor has found that the texture of a plain woven glass cloth for a laminated board is (a) the spacing between glass threads, (b) the weaving density of a warp or weft thread. (C) By setting the bulk density to a certain specific range, the dimensional variation of the substrate during the manufacturing process is reduced, and the warp yarn and weft yarn anisotropy are reduced. They have found that they can do this and have completed the present invention. That is, the present invention provides: either one of the warp yarns or the weft yarns, or both,
x in a glass cloth having a plain weave structure woven from a glass thread that is not more than x, (a) the glass thread forming the glass cloth in both the vertical direction and the horizontal direction and the gap between the glass threads forming a gap; Less than 30% of the yarn width,
(b) Weave density of warp yarn (CT) and weave density of weft yarn (C
The following formula (1) obtained by dividing the ratio of Y) by the ratio of the weave shrinkage ratio (DT) of the warp yarn and the weave shrinkage ratio (DY) of the weft yarn:
【数２】 で表される値が０．７〜１．３の範囲にあるガラスクロ
スであり、さらに(c) 該ガラスクロスのかさ密度が４
３．５％以上であるガラスクロスを提供する。また、
（但し、ここで言う糸と糸の間隔とは、図１に示す距離
ｘを示す。）(Equation 2) Is a glass cloth having a value represented by the range of 0.7 to 1.3, and (c) the glass cloth has a bulk density of 4
Provide a glass cloth that is 3.5% or more. Also,
(However, the distance between the yarns referred to here indicates the distance x shown in FIG. 1)
【０００７】 ガラス糸がＪＩＳ Ｒ３４１３に指定
される糸の呼称Ｅ２２５ １／０及びＥ２２５ １／０
の糸と同等の番手を有する糸である点にも特徴を有す
る。また、 タテ糸の織り縮み率（ＤＴ）がヨコ糸の織り縮み率
（ＤＹ）より大きい点にも特徴を有する。また、 タテ糸の織り密度（ＣＴ）が単位長さ２５ｍｍ当た
り、６５〜７１本であり、ヨコ糸の織り密度（ＣＹ）が
単位長さ２５ｍｍ当たり、５３本〜６５本である点にも
特徴を有する。また、 タテ糸の織り密度（ＣＴ）が単位長さ２５ｍｍ当た
り、６９〜±２本であり、ヨコ糸の織り密度（ＣＹ）が
単位長さ２５ｍｍ当たり、５５本±２本である点にも特
徴を有する。また、 ガラスクロスが開繊加工を施されている点にも特徴
を有する。それによりより容易に効果を明確にできる。The yarn names E225 1/0 and E225 1/0 for the glass yarn specified in JIS R3413
It also has a feature in that the yarn has the same count as that of the yarn. Another characteristic is that the warp weave shrinkage (DT) is larger than the weft shrinkage (DY). In addition, the weaving density (CT) of the warp yarn is 65 to 71 yarns per unit length of 25 mm, and the weaving density (CY) of the weft yarn is 53 to 65 yarns per unit length of 25 mm. Having. In addition, the weaving density (CT) of the warp yarn is 69 to ± 2 per unit length of 25 mm, and the weaving density (CY) of the weft yarn is 55 ± 2 units per unit length of 25 mm. Has features. Another characteristic is that the glass cloth is opened. This makes it easier to clarify the effect.
【０００８】以下、本発明を詳細に説明する。ここでい
う、番手とはＪＩＳ Ｒ３４１３に示されるように、単
位長さ当たりのガラス糸の質量を表す。また、織り縮み
率はＪＩＳ Ｌ１０９６に記載の織り縮み率測定法に準
じて測定した。また、クロスのかさ密度とは、〔クロス
の布重量（ｇ／ｍ2 ）／ガラスの密度（２．６ｇ／ｃｍ
3 ）〕／（クロスの厚み（ｍｍ）×１０００）×１００
の値を示す。ここでいう同等とは番手が同等もしくは類
似している糸を示し、例えばＥ２３２ １／０、Ｄ２２
５ １／０ 等の糸を指す。Hereinafter, the present invention will be described in detail. Here, the count represents the mass of the glass thread per unit length as shown in JIS R3413. The weave shrinkage was measured according to the weave shrinkage measurement method described in JIS L1096. The bulk density of the cloth is defined as [cloth weight (g / m 2 ) / density of glass (2.6 g / cm 2 ).
3 )] / (Cross thickness (mm) × 1000) × 100
Shows the value of The term “equivalent” as used herein indicates a yarn having the same or similar count, for example, E232 1/0, D22
5 1/0 etc.
【０００９】本発明の特定のガラスクロスを用いること
により、該ガラスクロスを用いた積層板において、(i)
ガラス糸間の隙間に存在する樹脂の量を減じることが可
能になり、また、(ii)ガラス糸の織り込み本数と織り縮
み率のバランスを適化でき、(iii) 該積層板の寸法変化
のばらつきを軽減し、特に異方性が著しく向上すること
を見い出し、本発明に至った。[0009] By using the specific glass cloth of the present invention, (i)
It is possible to reduce the amount of resin existing in the gaps between the glass threads, and (ii) to optimize the balance between the number of weaving glass threads and the weaving shrinkage ratio, and (iii) to reduce the dimensional change of the laminate. The present invention has been found to reduce the variation and particularly to significantly improve the anisotropy, leading to the present invention.
【００１０】通常、積層板の寸法変化は基材であるガラ
スクロスがマトリックス樹脂の硬化収縮等の体積変化を
いかに抑制するかにより支配され、且つ寸法変化のばら
つきは積層板中の樹脂の不均一な分布に依存する。例え
ば、ガラスクロス平面において、全体がガラス糸に覆わ
れていることが最も好ましいが、少なくともガラス糸に
覆われている面積が、全体の９５％以上、好ましくは９
６％以上であることが、樹脂の均一分布のためには好ま
しい。そのためにはガラス糸間の隙間はできるだけ狭い
ことがより好ましいが、少なくとも該隙間を構成するガ
ラス糸の糸幅の３０％未満、好ましくは２５％未満であ
ることが必要であり、より好ましくは最大値が３０％未
満であることが望ましい（クレーム１−(a) ）。具体的
にはＥ２２５ １／０ 糸の平均糸幅が３００μｍの場
合、該隙間は９０μｍ未満であることが必要となる。Normally, the dimensional change of the laminated board is governed by how the glass cloth as the base material suppresses the volume change such as the curing shrinkage of the matrix resin, and the variation in the dimensional change is caused by the unevenness of the resin in the laminated board. Depends on the distribution. For example, in the glass cloth plane, it is most preferable that the entirety is covered with the glass thread, but at least the area covered with the glass thread is 95% or more of the whole, preferably 9%.
6% or more is preferable for uniform distribution of the resin. For this purpose, it is more preferable that the gap between the glass threads is as narrow as possible, but it is necessary that the gap is at least less than 30%, preferably less than 25%, of the thread width of the glass thread constituting the gap, and more preferably the maximum. Desirably, the value is less than 30% (claim 1- (a)). Specifically, when the average yarn width of the E225 1/0 yarn is 300 μm, the gap needs to be less than 90 μm.
【００１１】本発明に使用するガラス糸は、その番手が
特定の糸の番手、即ちＥ２２５ １／０及びＥ２２５
１／０の糸と同等の番手を有することが積層板構成上必
要とされる０．１ｍｍの厚みのクロスを得るためには望
ましい（クレーム２）。ガラス糸幅及び糸間の隙間の測
定は、ガラスクロスを常温硬化のエポキシ樹脂等に包埋
し、研磨してガラス糸断面を削りだし、電子顕微鏡、光
学顕微鏡等で観察、糸幅及び糸間の長さを測定して得ら
れる。The count of the glass yarn used in the present invention is a specific yarn count, that is, E225 1/0 and E225.
It is desirable to have a count equal to 1/0 yarn in order to obtain a cloth having a thickness of 0.1 mm, which is required for the construction of the laminate (claim 2). To measure the glass thread width and the gap between the threads, embed the glass cloth in cold-cured epoxy resin, grind the cross section of the glass thread, observe it with an electron microscope, optical microscope, etc. Is obtained by measuring the length.
【００１２】また、異方性はタテ方向、ヨコ方向のガラ
ス糸の量に大きく依存しているが、各々の方向のガラス
糸の平面方向への補強効果の大小にも依存している。異
方性を軽減するためには、織り密度と糸の織り縮み率の
関係を適化することが必要となり、タテ糸の織り密度
（ＣＴ）とヨコ糸の織り密度（ＣＹ）の比をタテ糸の織
り縮み率（ＤＴ）とヨコ糸の織り縮み率（ＤＹ）の比で
除した下記式（１）で表された値が０．７〜１．３の範
囲にあること、好ましくは０．８〜１．２の範囲にある
ことが異方性改良のためには有効である（クレーム１−
(b)）。Although the anisotropy largely depends on the amount of the glass thread in the vertical direction and the horizontal direction, it also depends on the magnitude of the reinforcing effect of the glass thread in each direction in the plane direction. In order to reduce the anisotropy, it is necessary to optimize the relationship between the weaving density and the shrinkage ratio of the yarn, and the ratio of the weaving density (CT) of the warp yarn to the weaving density (CY) of the weft yarn is determined by the warp. The value expressed by the following formula (1) divided by the ratio of the yarn weave shrinkage (DT) to the weft shrinkage (DY) is in the range of 0.7 to 1.3, preferably 0. 0.8 to 1.2 is effective for improving the anisotropy (claim 1).
(b)).
【数３】 上記式（１）の値が０．７未満ではヨコ方向の補強効果
が大きくなり、また、１．３を越えるとタテ方向の補強
効果が大きくなり、タテ、ヨコの補強効果のバランスが
悪くなる。(Equation 3) If the value of the above formula (1) is less than 0.7, the reinforcing effect in the horizontal direction is large, and if it exceeds 1.3, the reinforcing effect in the vertical direction is large, and the balance between the vertical and horizontal reinforcing effects is poor. .
【００１３】また、一般に、ガラスクロスにエポキシ樹
脂等の熱硬化性樹脂を含浸させてプリプレグを作成する
際、タテ方向に張力がかかり、クロスはタテ方向に伸ば
された形となる。しかしながら、予め、ヨコ糸の織り縮
み率より、タテ糸方向の織り縮み率が大きいガラスクロ
スを使用した場合、プリプレグ作成時に該織り縮み率が
多少変動しても、タテ、ヨコの補強効果のバランスは保
持される方向に働き、寸法変化挙動に好ましい（クレー
ム３）。In general, when preparing a prepreg by impregnating a glass cloth with a thermosetting resin such as an epoxy resin, tension is applied in the vertical direction, and the cloth is elongated in the vertical direction. However, if a glass cloth having a large weaving shrinkage in the warp direction is used in advance than the weaving shrinkage of the weft, even if the weaving shrinkage fluctuates slightly during the preparation of the prepreg, the balance of the warp and weft reinforcement effects can be obtained. Works in the direction in which it is held, which is favorable for the dimensional change behavior (claim 3).
【００１４】また、本発明に使用されるガラス糸、即ち
Ｅ２２５ １／０及びＥ２２５ １／０の糸と同等の番
手を有するガラス糸を用いて、タテ糸の織り縮み率をヨ
コ糸の織り縮み率より大きくするためには、タテ糸の織
り密度は６５〜７１本／２５ｍｍが好ましいが、ヨコ糸
の織り密度によらずに、達成するためには６９本±２本
／２５ｍｍであることがより好ましい。７１本／２５ｍ
ｍを越えると糸同士がこすれ合うようになり、毛羽等の
問題が発生し、品質上好ましくない。さらに、ヨコ糸の
織り密度は補強効果のバランスから５３〜６５本／２５
ｍｍが好ましいが、ヨコ糸の織り密度が増えると、織物
の生産性が低下し、さらには毛羽等が発生することか
ら、５５本±２本／２５ｍｍがより好ましい（クレーム
４、５）。Further, the glass yarn used in the present invention, that is, a glass yarn having a count equivalent to that of E225 1/0 and E225 1/0, is used to reduce the weaving shrinkage ratio of the warp yarn to the weft shrinkage of the weft yarn. In order to make it larger than the ratio, the weaving density of the warp yarn is preferably 65 to 71 yarns / 25 mm. However, regardless of the weaving density of the weft yarn, it is 69 yarns / 2 yarns / 25 mm. More preferred. 71 / 25m
If it exceeds m, the yarns will rub against each other, causing problems such as fluff and the like, which is not preferable in terms of quality. Furthermore, the weaving density of the weft yarn is 53 to 65 yarns / 25 from the balance of the reinforcing effect.
mm is preferable, but when the weaving density of the weft yarn increases, the productivity of the woven fabric decreases, and further, fluff and the like are generated. Therefore, the ratio is more preferably 55 ± 2/25 mm (claims 4 and 5).
【００１５】また、厚み一定でガラス量を増加させるこ
とで基材の補強効果が大きくなると予想され、実験的に
ガラスクロスのカサ密度が４３．５％以上の場合、特に
４４％以上で顕著に寸法変化率の絶対値が小さくなるこ
とが確認されている（クレーム−(c) ）。この場合、ガ
ラスクロスのカサ密度は、寸法変化を小さくする目的の
ために大きければ大きい程良いが、ガラスクロスを構成
するガラス糸の隙間形成の関係もあってその上限は７０
％で十分である。Further, it is expected that the reinforcing effect of the base material will be increased by increasing the amount of glass at a constant thickness. Experimentally, when the bulk density of the glass cloth is 43.5% or more, particularly at 44% or more, the remarkable effect is obtained. It has been confirmed that the absolute value of the dimensional change rate is reduced (claim (c)). In this case, the bulk density of the glass cloth is preferably as large as possible for the purpose of reducing the dimensional change, but the upper limit is 70% due to the formation of a gap between the glass threads constituting the glass cloth.
% Is sufficient.
【００１６】さらに、開繊加工、例えば、柱状水流の圧
力による開繊、水などの溶媒中での高周波振動による開
繊加工等を施すことで、厚みが減少し、且つカサ密度が
増加して、本発明のガラスクロスはより好ましい状態と
なる（クレーム６）。プリント配線板に使用される積層
板のガラスクロスには、通常Ｅガラス（無アルカリガラ
ス）と呼ばれるガラスが使用されるが、Ｄガラス、Ｓガ
ラス、高誘電ガラス等を使用しても、ガラス種によって
本発明の効果が損なわれることはない。Further, by performing fiber opening processing, for example, fiber opening by pressure of columnar water flow, fiber opening processing by high frequency vibration in a solvent such as water, etc., the thickness is reduced and the bulk density is increased. Thus, the glass cloth of the present invention is in a more preferable state (claim 6). As a glass cloth of a laminated board used for a printed wiring board, a glass generally called E glass (alkali-free glass) is used. The effect of the present invention is not impaired.
【００１７】本発明の積層板を作成するには、常法に従
えば良く、例えば本発明のガラスクロスにエポキシ樹脂
のようなマトリックス樹脂を含浸させて、樹脂含浸プリ
プレグを作り、これを１枚でまたは複数枚積層し、また
は通常のガラスクロスからなる樹脂含浸プリプレグと組
み合わせて積層し、加熱加圧成形することにより得られ
る。また、基材としてガラスクロスと不織布等を併用す
る場合には本発明のガラスクロスを表層に使用すること
により、本発明の目的を達成することが出来る。また、
本発明のガラスクロスを多層板成型用の接着プリプレグ
として用いる場合でも、寸法変化のばらつきの低減、異
方性の向上等、寸法変化挙動の改善を達成することがで
きる。The laminated board of the present invention may be prepared according to a conventional method. For example, a glass cloth of the present invention is impregnated with a matrix resin such as an epoxy resin to prepare a resin-impregnated prepreg. Or a plurality of sheets are laminated, or combined with a resin-impregnated prepreg made of ordinary glass cloth, and laminated under heating and pressure molding. When a glass cloth and a nonwoven fabric are used in combination as the base material, the object of the present invention can be achieved by using the glass cloth of the present invention for the surface layer. Also,
Even when the glass cloth of the present invention is used as an adhesive prepreg for molding a multilayer board, it is possible to achieve improvement in dimensional change behavior such as reduction in variation in dimensional change and improvement in anisotropy.
【００１８】積層板に使用される樹脂としては、エポキ
シ樹脂、不飽和ポリエステル樹脂、ポリアミド樹脂、Ｂ
Ｔ樹脂、シアネ−ト樹脂等の熱硬化性樹脂や、ＰＰＯ樹
脂、ポリエ−テルイミド樹脂、フッソ樹脂等の熱可塑性
樹脂、またはそれらの混合樹脂などが挙げられる。ま
た、樹脂中に水酸化アルミニウム等の無機充填剤を混合
させた樹脂を使用しても構わない。The resin used for the laminated board includes epoxy resin, unsaturated polyester resin, polyamide resin, B resin
Thermosetting resins such as T resin and cyanate resin, thermoplastic resins such as PPO resin, polyetherimide resin, and fluorine resin, or a mixed resin thereof are exemplified. Further, a resin in which an inorganic filler such as aluminum hydroxide is mixed in the resin may be used.
【００１９】[0019]
【実施例】以下、本発明を実施例により詳しく説明する
が、本発明はこれらに限定されるものではない。実施例
中の積層板は以下の方法にて作成し、その寸法変化はＪ
ＩＳ６４８１に準じて測定した。測定結果を表２に示
す。 （積層板の作成方法）：本発明のガラスクロスにエポキ
シ樹脂を含浸し、乾燥してプリプレグを得た。このプリ
プレグを１枚積層し、更に上下に３５μｍ銅箔を重ね
て、１７５℃、４０ｋｇ／ｃｍ2 で加熱加圧して積層板
を得た。The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the invention thereto. The laminate in the examples was prepared by the following method, and the dimensional change was J
It was measured according to IS6481. Table 2 shows the measurement results. (Preparation method of laminated board): The glass cloth of the present invention was impregnated with an epoxy resin and dried to obtain a prepreg. One prepreg was laminated, 35 μm copper foil was further laminated on top and bottom, and heated and pressed at 175 ° C. and 40 kg / cm 2 to obtain a laminated board.
【００２０】（実施例及び比較例）タテ糸にＥＣＥ２２
５ １／０ を使用し、ヨコ糸にＥＣＥ２２５ １／０
を使用し、表１に示す織物構成で、平織り組織でエア−
ジェットル−ムを用いて製織した。開繊加工は柱状水流
の水圧による開繊を施した。表２の結果から、本発明の
ガラスクロスを用いた場合は、積層板の寸法変化挙動、
異方性及びばらつきが大幅に改善されることが分かっ
た。(Examples and Comparative Examples) ECE22 was added to the warp yarn.
Use 5 1/0 and add ECE225 1/0 to the weft
Using a woven structure shown in Table 1 and a plain weave
Weaved using a jet room. The fiber opening process was performed by the water pressure of the columnar water flow. From the results in Table 2, when the glass cloth of the present invention was used, the dimensional change behavior of the laminated board,
It has been found that the anisotropy and the variability are greatly improved.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【発明の効果】本発明のガラスクロスを用いたプリント
配線板用積層板は、成形時の寸法変化及びそのばらつき
が小さく、またその異方性も従来のものより小さので、
回路パタ−ンが高密度の場合でもスケ−ルファクタ−の
補正を要さず、かつ部品位置決めマ−クで基準穴のみで
部品の位置決めが可能となる。The laminated board for a printed wiring board using the glass cloth of the present invention has a small dimensional change and its variation during molding and its anisotropy is smaller than that of the conventional one.
Even when the circuit pattern has a high density, no correction of the scale factor is required, and the component can be positioned only by the reference hole by the component positioning mark.
【手続補正書】[Procedure amendment]
【提出日】平成９年１０月９日[Submission date] October 9, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】以下、本発明を詳細に説明する。ここでい
う、番手とはＪＩＳ Ｒ３４１３に示されるように、
単位長さ当たりのガラス糸の質量を表す。また、織り縮
み率はＪＩＳ Ｌ１０９６に記載の織り縮み率測定法
に準じて測定した。また、クロスのかさ密度とは、〔ク
ロスの布重量（ｇ／ｍ２）／ガラスの密度（２．６ｇ／
ｃｍ３）〕／（クロスの厚み（ｍｍ）×１０００）×１
００の値を示す。ここでいう同等とは番手が同等もしく
は類似している糸を示し、例えばＥ２３２ １／０、
Ｄ２２５ １／０ 等の糸を指す。図１は、本発明
のガラスクロスを構成する糸と糸の間隔を具体的に示す
模式図である。ｘは糸と糸の間隔である。 Hereinafter, the present invention will be described in detail. Here, the count is, as shown in JIS R3413,
Represents the mass of the glass thread per unit length. The weave shrinkage was measured according to the weave shrinkage measurement method described in JIS L1096. The bulk density of the cloth is defined as [cloth weight (g / m 2 ) / density of glass (2.6 g / g).
cm 3 )] / (cloth thickness (mm) × 1000) × 1
Indicates a value of 00. The term “equal” as used herein indicates a yarn having the same or similar count, for example, E232 1/0,
D225 1/0. FIG. 1 shows the present invention.
Concretely shows the distance between the yarns constituting the glass cloth
It is a schematic diagram. x is the distance between the yarns.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】追加[Correction method] Added
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明のガラスクロスを構成する糸と糸の間隔FIG. 1 shows the distance between yarns constituting the glass cloth of the present invention.
を具体的に示す模式図である。FIG.
【符号の説明】[Explanation of symbols] ｘ：糸と糸の間隔x: Distance between yarns
Claims (6)
が４５ｔｅｘ以下の糸であるガラス糸から織成されてな
る平織り組織のガラスクロスにおいて、 (a) タテ方向及びヨコ方向ともにガラスクロスを構成す
るガラス糸とガラス糸の間隔が隙間を形成するガラス糸
の糸幅の３０％未満で、 (b)タテ糸の織り密度（ＣＴ）
とヨコ糸の織り密度（ＣＹ）の比をタテ糸の織り縮み率
（ＤＴ）とヨコ糸の織り縮み率（ＤＹ）の比で除した下
記数式（１）： 【数１】 で表される値が０．７〜１．３の範囲にあるガラスクロ
スであり、さらに(c) 該ガラスクロスのかさ密度が４
３．５％以上であることを特徴とするガラスクロス。
（但し、ここで言う糸と糸の間隔とは、図１に示す距離
ｘを示す。）1. A glass cloth having a plain weave structure in which one or both of a warp yarn and a weft yarn is woven from a glass yarn having a length of 45 tex or less. (A) A glass cloth is formed in both the warp direction and the weft direction. (B) the weaving density (CT) of the warp yarn is less than 30% of the yarn width of the glass yarn forming the gap;
And the weft density of the weft (CY) divided by the weft shrinkage of the warp (DT) and the weft shrinkage of the weft (DY). Is a glass cloth having a value represented by the range of 0.7 to 1.3, and (c) the glass cloth has a bulk density of 4
Glass cloth characterized by being 3.5% or more.
(However, the distance between the yarns referred to here indicates the distance x shown in FIG. 1)
れる糸の呼称Ｅ２２５ １／０及びＥ２２５ １／０の
糸と同等の番手を有する糸であることを特徴とする請求
項１記載のガラスクロス。2. The glass cloth according to claim 1, wherein the glass yarn is a yarn having a yarn count equivalent to yarn names E225 1/0 and E225 1/0 specified by JIS R3413.
織り縮み率（ＤＹ）より大きいことを特徴とする請求項
１又は２記載のガラスクロス。3. The glass cloth according to claim 1, wherein the weaving shrinkage (DT) of the warp yarn is larger than the weaving shrinkage (DY) of the weft yarn.
５ｍｍ当たり、６５〜７１本であり、ヨコ糸の織り密度
（ＣＹ）が単位長さ２５ｍｍ当たり、５３本〜６５本で
あることを特徴とする請求項１〜３のいずれかに記載の
ガラスクロス。4. The weaving density (CT) of the warp yarn is unit length 2
The glass cloth according to any one of claims 1 to 3, wherein the number is 65 to 71 per 5 mm, and the weave density (CY) of the weft is 53 to 65 per unit length of 25 mm. .
５ｍｍ当たり、６９〜±２本であり、ヨコ糸の織り密度
（ＣＹ）が単位長さ２５ｍｍ当たり、５５本±２本であ
ることを特徴とする請求項４記載のガラスクロス。5. The weaving density (CT) of the warp yarn is unit length 2
The glass cloth according to claim 4, characterized in that the number is 69 to ± 2 per 5 mm and the weft density (CY) of the weft is 55 ± 2 per unit length of 25 mm.
ことを特徴とする請求項１〜５のいずれかに記載のガラ
スクロス。6. The glass cloth according to claim 1, wherein the glass cloth has been subjected to fiber opening processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28761797A JP3323116B2 (en) | 1997-10-06 | 1997-10-06 | Glass cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28761797A JP3323116B2 (en) | 1997-10-06 | 1997-10-06 | Glass cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11107112A true JPH11107112A (en) | 1999-04-20 |
| JP3323116B2 JP3323116B2 (en) | 2002-09-09 |
Family
ID=17719591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28761797A Expired - Lifetime JP3323116B2 (en) | 1997-10-06 | 1997-10-06 | Glass cloth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3323116B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001348757A (en) * | 2000-06-02 | 2001-12-21 | Asahi Schwebel Co Ltd | Glass cloth and printed wiring board |
| JP2014226914A (en) * | 2013-05-27 | 2014-12-08 | 株式会社トッパン・コスモ | Transparent nonflammable sheet and method for producing the same |
| US9161441B2 (en) | 2009-08-26 | 2015-10-13 | Asahi Kasei E-Materials Corporation | Glass cloth for printed wiring board |
-
1997
- 1997-10-06 JP JP28761797A patent/JP3323116B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001348757A (en) * | 2000-06-02 | 2001-12-21 | Asahi Schwebel Co Ltd | Glass cloth and printed wiring board |
| US9161441B2 (en) | 2009-08-26 | 2015-10-13 | Asahi Kasei E-Materials Corporation | Glass cloth for printed wiring board |
| JP2014226914A (en) * | 2013-05-27 | 2014-12-08 | 株式会社トッパン・コスモ | Transparent nonflammable sheet and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3323116B2 (en) | 2002-09-09 |
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