JPH0643507B2 - Prepreg manufacturing method - Google Patents
Prepreg manufacturing methodInfo
- Publication number
- JPH0643507B2 JPH0643507B2 JP62241945A JP24194587A JPH0643507B2 JP H0643507 B2 JPH0643507 B2 JP H0643507B2 JP 62241945 A JP62241945 A JP 62241945A JP 24194587 A JP24194587 A JP 24194587A JP H0643507 B2 JPH0643507 B2 JP H0643507B2
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- resin
- base material
- impregnated
- glass fiber
- 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.)
- Expired - Lifetime
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 この発明は、ガラス繊維不織布を基材とするプリプレグ
の製法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing a prepreg using a glass fiber nonwoven fabric as a base material.
ガラス繊維不織布を基材とするプリプレグは、コンポジ
ット積層板や多層配線板等に多く用いられる。Prepregs based on glass fiber non-woven fabric are often used for composite laminated boards, multilayer wiring boards, and the like.
このプリプレグは、ガラス繊維不織布を樹脂に含浸した
のち乾燥して作るが、その基材の性質に起因して気泡を
多く内在している。そのため、これを少なくとも一部用
いて作った積層板は、前記気泡が抜け切らず、ボイドを
多く有している。このボイドは、製品の加工時、フクレ
として現れ、その歩留まりを悪くする。ガラス繊維不織
布を基材とするプリプレグは、その表面に樹脂やガラス
繊維の粉が付着していることが多い。そのため、このプ
リプレグの組み合わせ時には、これらの樹脂やガラス繊
維の粉が舞い上がり、銅箔の表面に付着する。その結
果、出来上がった製品の表面には、ダコン（打痕）不良
と称される欠陥が現れやすい。ここに、ダコン不良と
は、樹脂やガラス繊維の粉が銅箔表面にプレスされて銅
箔にあばた状の欠陥を生じさせることを指す。This prepreg is made by impregnating a glass fiber non-woven fabric with a resin and then drying the prepreg. However, due to the properties of the base material, it contains many bubbles. Therefore, the laminated plate made by using at least a part of this has a large number of voids because the bubbles do not completely escape. The voids appear as blisters during the processing of the product and deteriorate the yield. Resins and glass fiber powder are often attached to the surface of a prepreg based on a glass fiber nonwoven fabric. Therefore, when this prepreg is combined, powders of these resins and glass fibers fly up and adhere to the surface of the copper foil. As a result, on the surface of the finished product, defects referred to as Dakon (dent) defects are likely to appear. Here, the Dakon defect refers to the fact that resin or glass fiber powder is pressed on the surface of the copper foil to cause a pitted defect on the copper foil.
この問題を解決するために、乾燥条件や成形条件が種々
検討された。しかし、有効な解決策が見出されなかっ
た。In order to solve this problem, various drying conditions and molding conditions have been studied. However, no effective solution was found.
この発明は、以上の事情に鑑み、ボイドが残らず、ダコ
ン不良の発生しにくいプリプレグの製法を提供すること
を目的とする。In view of the above circumstances, it is an object of the present invention to provide a method of manufacturing a prepreg in which no void remains and a Dakon defect does not easily occur.
上記の目的を達成するため、この発明は、ガラス繊維不
織布を基材とし、この基材を樹脂に含浸したのち乾燥す
るプリプレグの製法であって、前記乾燥工程の際、樹脂
を含浸した基材が乾燥機内にある間に、前記樹脂を含浸
した基材を熱ロールに掛けることを特徴とするプリプレ
グの製法を要旨とする。In order to achieve the above object, the present invention is a method for producing a prepreg in which a glass fiber nonwoven fabric is used as a base material, and the base material is impregnated with a resin, and then dried. A method for producing a prepreg is characterized in that a base material impregnated with the above resin is placed on a hot roll while in a dryer.
以下に、この発明を、その実施例を表す図面を参照しつ
つ、詳しく説明する。Hereinafter, the present invention will be described in detail with reference to the drawings illustrating the embodiments.
第１図は、この発明の一実施例を示す。図にみるよう
に、ガラス繊維不織布からなる基材５は、通常のとお
り、含浸槽２に通され、含浸ローラ２１を用いる等して
樹脂含浸される。この樹脂含浸は、上記以外の方法によ
っても良い。このようにして樹脂が含浸された基材５
は、乾燥機１の中を通されて乾燥される。乾燥機１のス
ペースを少なくするため、樹脂が含浸された基材５は、
第１室１１から熱ロール３ａ，３ｂの設けられた第３室
１２に行く間に第２室１３で反転される。そのための案
内は、ガイドロール４…を用いて行われる。熱ロール３
ａ，３ｂは、熱媒を流す等して加熱されている。その温
度条件と圧力条件は、適宜に設定されて良いが、通常
は、温度１００〜２００℃、圧力３〜１５kg/cm2（好ま
しくは、５〜１０kg/cm2）の条件が選ばれる。このよう
な熱ロールは２段以上設けられても良い。この発明の場
合、図１にみるように、熱ロールを乾燥機内に設け、樹
脂を含浸した基材を乾燥機内にある間に熱ロールに掛け
るのである。含浸樹脂の種類に制限はない。FIG. 1 shows an embodiment of the present invention. As shown in the figure, the substrate 5 made of glass fiber non-woven fabric is passed through the impregnation tank 2 and impregnated with resin by using the impregnation roller 21 as usual. This resin impregnation may be performed by a method other than the above. The base material 5 thus impregnated with the resin
Is passed through the dryer 1 to be dried. In order to reduce the space of the dryer 1, the resin-impregnated base material 5 is
It is inverted in the second chamber 13 while going from the first chamber 11 to the third chamber 12 provided with the heat rolls 3a and 3b. Guidance therefor is performed using the guide rolls 4 ... Thermo roll 3
The a and 3b are heated by flowing a heat medium or the like. The temperature condition and the pressure condition may be appropriately set, but normally, the condition of a temperature of 100 to 200 ° C. and a pressure of 3 to 15 kg / cm 2 (preferably 5 to 10 kg / cm 2 ) is selected. Such heat rolls may be provided in two or more stages. In the case of the present invention, as shown in FIG. 1, a hot roll is provided in the dryer, and the resin-impregnated substrate is placed on the hot roll while it is in the dryer. There is no limitation on the type of impregnating resin.
この発明において、樹脂を含浸した基材が乾燥機内にあ
る間に、熱ロールを掛けるのは、乾燥工程においては、
樹脂がまだ軟らかいので、気泡が抜け易いからである。
この熱ロール掛けにより、ボイドの原因となる気泡をプ
リプレグから抜くことができる。In the present invention, while the substrate impregnated with the resin is in the dryer, applying a hot roll means that in the drying step,
This is because the resin is still soft and bubbles can easily escape.
By this hot roll application, bubbles causing voids can be removed from the prepreg.
以下に実施例を比較例と併せて述べる。この発明は、こ
のような実施例によって範囲を限定される訳ではない。Examples will be described below together with comparative examples. The present invention is not limited in scope by such embodiments.
（実施例１） ガラス繊維不織布に樹脂を含浸し乾燥した。この乾燥
時、乾燥機の出口付近で２本の熱ロールに通してプリプ
レグを得た。熱ロールは、熱媒で１５０℃に加熱されて
いた。その圧力は５kg/cm2であった。得られたプリプレ
グを積層し、１６０℃，６０分，５０kg/cm2の条件で成
形した。(Example 1) A glass fiber nonwoven fabric was impregnated with a resin and dried. During this drying, a prepreg was obtained by passing it through two hot rolls near the exit of the dryer. The hot roll was heated to 150 ° C. with a heating medium. The pressure was 5 kg / cm 2 . The obtained prepregs were laminated and molded under the conditions of 160 ° C., 60 minutes and 50 kg / cm 2 .
（実施例２） 熱ロールの圧力を１０kg/cm2にしたほかは、実施例１と
同様にしてプリプレグを得た。(Example 2) A prepreg was obtained in the same manner as in Example 1 except that the pressure of the hot roll was set to 10 kg / cm 2 .
（比較例） 熱ロールを用いないようにしたほかは、実施例１と同様
にして、プリプレグを得た。(Comparative Example) A prepreg was obtained in the same manner as in Example 1 except that the hot roll was not used.
以上の結果は、下表のとおりであり、実施例は比較例よ
りも優れていた。The above results are shown in the table below, and the examples were superior to the comparative examples.
〔発明の効果〕 この発明にかかるプリプレグの製法は、以上のとおりで
あり、ガラスガラス繊維不織布を基材とし、この基材を
樹脂に含浸したのち乾燥するプリプレグの製法であっ
て、前記乾燥工程の際、樹脂を含浸した基材が乾燥機内
にある間に、前記樹脂を含浸した基材を熱ロールに掛け
ることを特徴とする。すなわち、プリプレグに対し、予
備脱泡を施すようにしている。そのため、これを用いて
作った製品の中にボイドが残りにくい。このように、ボ
イドが生じ難いので、従来、ボイド抜きに時間を要して
いたのが不必要になり、積層品製造のプレス加工におけ
る成形サイクルの短縮が可能となった。プリプレグの表
面を熱ロールで圧迫しているので、樹脂やガラス繊維の
粉の舞い上がりが起きにくく、ダコン不良が発生しにく
い。 [Effects of the Invention] The method for producing a prepreg according to the present invention is as described above, and is a method for producing a prepreg in which a glass glass fiber non-woven fabric is used as a base material, and the base material is impregnated with a resin and then dried. In this case, the resin-impregnated base material is placed on a hot roll while the resin-impregnated base material is in the dryer. That is, preliminary defoaming is applied to the prepreg. Therefore, voids are less likely to remain in the product made using this. As described above, since voids are unlikely to occur, it has become unnecessary to take time to remove voids in the past, and it has become possible to shorten the molding cycle in the press working for producing a laminated product. Since the surface of the prepreg is pressed by a hot roll, powder of resin and glass fiber does not easily rise, so that it is less likely to cause a bad lacquer.
第１図はこの発明の一実施例を表す簡略説明図である。 １…乾燥機、２…含浸槽、３ａ，３ｂ…熱ロール、５…
基材FIG. 1 is a simplified explanatory view showing an embodiment of the present invention. 1 ... Dryer, 2 ... Impregnation tank, 3a, 3b ... Heat roll, 5 ...
Base material
Claims (2)
樹脂に含浸したのち乾燥するプリプレグの製法におい
て、前記乾燥工程の際、樹脂を含浸した基材が乾燥機内
にある間に、前記樹脂を含浸した基材を熱ロールに掛け
ることを特徴とするプリプレグの製法。1. A method of producing a prepreg in which a glass fiber non-woven fabric is used as a base material, and the base material is impregnated with a resin and then dried. In the drying step, while the base material impregnated with the resin is in the dryer, A method for producing a prepreg, characterized in that a base material impregnated with a resin is placed on a hot roll.
〜１５kg/cm2の条件のものである特許請求の範囲第１項
記載のプリプレグの製法。2. A thermo roll having a temperature of 100 to 200 ° C. and a pressure of 3
The method for producing a prepreg according to claim 1, which is under the condition of -15 kg / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62241945A JPH0643507B2 (en) | 1987-09-26 | 1987-09-26 | Prepreg manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62241945A JPH0643507B2 (en) | 1987-09-26 | 1987-09-26 | Prepreg manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6485229A JPS6485229A (en) | 1989-03-30 |
| JPH0643507B2 true JPH0643507B2 (en) | 1994-06-08 |
Family
ID=17081904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62241945A Expired - Lifetime JPH0643507B2 (en) | 1987-09-26 | 1987-09-26 | Prepreg manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643507B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008044999A (en) * | 2006-08-11 | 2008-02-28 | Toho Tenax Co Ltd | Process for producing prepreg excellent in uniformity |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855028B2 (en) * | 1975-10-07 | 1983-12-07 | 株式会社クボタ | Tractor steering wheel |
-
1987
- 1987-09-26 JP JP62241945A patent/JPH0643507B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6485229A (en) | 1989-03-30 |
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