JPH04351509A - Impregnation method with resin varnish - Google Patents
Impregnation method with resin varnishInfo
- Publication number
- JPH04351509A JPH04351509A JP22540491A JP22540491A JPH04351509A JP H04351509 A JPH04351509 A JP H04351509A JP 22540491 A JP22540491 A JP 22540491A JP 22540491 A JP22540491 A JP 22540491A JP H04351509 A JPH04351509 A JP H04351509A
- Authority
- JP
- Japan
- Prior art keywords
- resin varnish
- base material
- varnish
- resin
- prepreg
- 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
Links
- 239000002966 varnish Substances 0.000 title claims abstract description 47
- 239000011347 resin Substances 0.000 title claims abstract description 41
- 229920005989 resin Polymers 0.000 title claims abstract description 41
- 238000005470 impregnation Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 15
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000006260 foam Substances 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 2
- 239000003365 glass fiber Substances 0.000 description 9
- 239000002759 woven fabric Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004643 cyanate ester Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は織布および不織布等の基
材に樹脂ワニスを含浸する含浸方法に関するものである
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impregnation method for impregnating base materials such as woven and nonwoven fabrics with resin varnish.
【０００２】0002
【従来技術】従来から、ガラス繊維および不織布等の基
材に樹脂ワニスをキッスロール付含浸装置等を用いて含
浸し加熱乾燥し溶剤を蒸発して、いわゆるプリプレグを
得た後、該プリプレグを積層し加熱・加圧成形し積層板
あるいは銅張積層板を製造している。プリプレグの品質
に対する、産業界の要求はますます厳しくなり、従来の
含浸方法では、特に毛羽だったガラス繊維および不織布
等の基材中の繊維格子間の空気、フィラメントが形成す
る毛細管の空気およびロービング交点に存在する空気等
が樹脂ワニス含浸工程では十分に除去されず、プリプレ
グ中に気泡が残存し、このプリプレグを用いて成形した
特に銅張積層板は耐水性が悪くなり、ひいては長期の信
頼性が劣る欠点があった。[Prior Art] Conventionally, base materials such as glass fibers and nonwoven fabrics are impregnated with resin varnish using an impregnating device equipped with a kiss roll, heated and dried to evaporate the solvent to obtain a so-called prepreg, and then the prepreg is laminated. We manufacture laminates or copper-clad laminates by heating and pressure forming. The demands of the industry on the quality of prepregs are becoming more and more stringent, and traditional impregnation methods are particularly sensitive to the air between the fiber lattices in substrates such as fluffy glass fibers and non-woven fabrics, the air in the capillaries formed by the filaments, and the rovings. Air present at the intersection points is not sufficiently removed during the resin varnish impregnation process, and air bubbles remain in the prepreg, resulting in poor water resistance, especially in copper-clad laminates molded using this prepreg, and, as a result, long-term reliability. There was a disadvantage that it was inferior.
【０００３】これらの問題を解決するために、溶剤置換
、あるいは希釈ワニスを用いた２段含浸方法（例えば特
開昭６２−１００５３８号公報）、真空含浸法（例えば
特開昭５９−４９９３０号公報）等がある。２段含浸方
法はプリプレグの気泡の減少には効果があるが、含浸槽
が２槽で、かつ大型の設備となる欠点があった。また真
空含浸方法もプリプレグの気泡の減少には効果があるが
シールが難しく、真空含浸設備が過大となり、設備のメ
ンテナンスが難しい等の欠点があった。[0003] In order to solve these problems, a two-stage impregnation method using solvent substitution or diluted varnish (for example, JP-A-62-100538), a vacuum impregnation method (for example, JP-A-59-49930), ) etc. Although the two-stage impregnation method is effective in reducing air bubbles in the prepreg, it has the disadvantage of requiring two impregnation tanks and large-scale equipment. Further, although the vacuum impregnation method is effective in reducing air bubbles in the prepreg, it has drawbacks such as difficulty in sealing, necessitating oversized vacuum impregnation equipment, and difficulty in maintaining the equipment.
【０００４】0004
【発明が解決しようとする課題】本発明はシール部がな
く簡単な設備で、設備費が廉価でありプリプレグ中の気
泡が大幅に減少できる樹脂ワニス含浸方法を提供するも
のである。SUMMARY OF THE INVENTION The present invention provides a resin varnish impregnation method that does not require a sealing part, uses simple equipment, has low equipment costs, and can significantly reduce air bubbles in prepreg.
【０００５】[0005]
【課題を解決するための手段】本発明は基材を半円筒状
の有孔基材受けに接触させ移動しながら、樹脂ワニス槽
中に浸漬し、樹脂ワニスを強制流動させ半円筒状の有孔
基材受けを通過させて、ワニスを脱泡し循環して基材に
ワニスを含浸する樹脂ワニスの含浸方法である。[Means for Solving the Problems] The present invention involves moving a base material in contact with a semi-cylindrical perforated base material receiver, immersing it in a resin varnish bath, forcing the resin varnish to flow, and moving the base material into contact with a semi-cylindrical perforated base material receiver. This is a resin varnish impregnation method in which the varnish is defoamed and circulated to impregnate the base material with the varnish.
【０００６】本発明に用いる基材はガラス繊維、アラミ
ド繊維、ポリエステル繊維、カーボン繊維、紙等の織布
または不織布が挙げられる。本発明の樹脂ワニスは積層
板用プリプレグに一般に用いられるものならば、特には
限定しないが、例えばエポキシ樹脂、ポリイミド樹脂、
エポキシ変性ポリイミド樹脂、フェノール樹脂およびシ
アン酸エステル樹脂等の樹脂を溶剤に溶解したものが挙
げられる。樹脂の粘度は特には限定しないが常温で含浸
するので０．２〜５ポイズが好ましい。The substrate used in the present invention includes woven or nonwoven fabrics such as glass fiber, aramid fiber, polyester fiber, carbon fiber, and paper. The resin varnish of the present invention is not particularly limited as long as it is generally used for prepregs for laminates, but for example, epoxy resin, polyimide resin,
Examples include those in which resins such as epoxy-modified polyimide resins, phenol resins, and cyanate ester resins are dissolved in solvents. The viscosity of the resin is not particularly limited, but it is preferably 0.2 to 5 poise since it is impregnated at room temperature.
【０００７】本発明の実施例を図１，２に基づいて具体
的に説明する。ガラス繊維織布１を多数の小さな孔が穿
設された半円筒状の有孔基材受け４に接触させつつ移動
させ、樹脂ワニス槽２を上昇し、樹脂ワニス槽２中に浸
漬し、ポンプ９を作動させガラス繊維織布を図１におい
て、右方向に移動しながら、樹脂ワニス槽２から半円筒
状の有孔基材受けの内部へ、樹脂ワニス３を強制流動さ
せ、ガラス繊維織布１中の空気を樹脂ワニスと共に流出
させワニス移送管６の下部の大きな断面の吸引孔７から
ワニス移送管６に導き、脱泡装置１０を用いてガラス繊
維織布中の空気および大気中の空気が混入した樹脂ワニ
スを脱泡し、樹脂ワニスを循環してガラス繊維織布に樹
脂ワニスを連続的に含浸することにより、プリプレグ中
の残存気泡量を従来の２段含浸方法あるいは真空含浸法
と同等、あるいは同等以下にできる。また設備が小型で
メンテナンスが簡単にできる。An embodiment of the present invention will be specifically explained based on FIGS. 1 and 2. The glass fiber woven fabric 1 is moved while being in contact with a semi-cylindrical perforated substrate receiver 4 in which many small holes are bored, the resin varnish tank 2 is raised, the resin varnish tank 2 is immersed in the resin varnish tank 2, and the pump 9 is turned on. While operating the glass fiber woven fabric to the right in FIG. The resin is flowed out together with the resin varnish and guided into the varnish transfer pipe 6 through the suction hole 7 with a large cross section at the bottom of the varnish transfer pipe 6, and the resin mixed with the air in the glass fiber fabric and the air in the atmosphere is removed using the defoaming device 10. By defoaming the varnish and circulating the resin varnish to continuously impregnate the glass fiber woven fabric with the resin varnish, the amount of residual air bubbles in the prepreg can be reduced to the same level as the conventional two-stage impregnation method or vacuum impregnation method. You can do the following. Additionally, the equipment is small and maintenance is easy.
【０００８】ガラス繊維織布を半円筒状の有孔基材受け
に接触し樹脂ワニス槽に浸漬する工程において、有孔基
材受け４にガラス繊維織布１を予めセットし樹脂ワニス
槽を上昇し浸漬した後、ポンプ９を作動させ、樹脂ワニ
ス３を強制流動して含浸する。In the step of contacting the glass fiber woven fabric with a semi-cylindrical perforated base material receiver and immersing it in the resin varnish tank, the glass fiber woven fabric 1 is set in advance in the perforated base material receiver 4, and after the resin varnish tank is raised and immersed. , the pump 9 is operated to forcefully flow and impregnate the resin varnish 3.
【０００９】半円筒状の有孔基材受けに設けてある孔の
形状は円形でも、スリット等でもよく、特に限定するも
のではない。基材が浸漬されている間に基材の全面を樹
脂ワニスが通過するように、基材受けの全面に孔を配列
すればよい。有孔基材受けの上下の開口部以外の他の面
はいずれも遮蔽板により大気から遮蔽されており、樹脂
ワニス中に極力空気が混入しないようにする。ワニス移
送管の下部の開口部は、特には限定はしないが樹脂ワニ
スが通過する大きな断面あるいは多数の孔等からなる。The shape of the hole provided in the semi-cylindrical perforated base material receiver may be circular or slit, and is not particularly limited. The holes may be arranged on the entire surface of the substrate receiver so that the resin varnish passes over the entire surface of the substrate while the substrate is immersed. All surfaces other than the upper and lower openings of the perforated base material receiver are shielded from the atmosphere by shielding plates to prevent air from entering the resin varnish as much as possible. The opening at the bottom of the varnish transfer tube is not particularly limited, but may have a large cross section or a large number of holes through which the resin varnish passes.
【００１０】基材受けの全面に穿設されている孔の面積
は、特に限定するものではないが開孔率を大きくするの
が望ましいので気泡の減少量から３ｍｍ２〜４００ｍｍ
２が好ましい。脱泡法としては薄膜脱泡、遠心脱泡等が
あり、樹脂ワニス中に混入している空気を脱泡できるも
のならば、特に限定するものではない。本発明の樹脂ワ
ニスの循環方向は樹脂ワニス槽からワニス移送管の方向
でも逆の方向でもよい。樹脂ワニスが含浸された基材は
通常のスクイズロールを用いて、樹脂量を調節する。[0010] The area of the holes drilled on the entire surface of the base material receiver is not particularly limited, but since it is desirable to increase the porosity, it is 3 mm2 to 400 mm based on the amount of air bubble reduction.
2 is preferred. Defoaming methods include thin film defoaming, centrifugal defoaming, etc., and are not particularly limited as long as they are capable of defoaming air mixed in the resin varnish. The circulation direction of the resin varnish of the present invention may be from the resin varnish tank to the varnish transfer pipe or in the opposite direction. The resin amount of the base material impregnated with the resin varnish is adjusted using an ordinary squeeze roll.
【００１１】[0011]
【発明の効果】本発明によると基材中の空気を樹脂ワニ
スと共に強制的に流出させ、プリプレグ中の残存気泡を
大幅に減少できる。また小型の設備であり、シール部が
ないのでメンテナンスが容易であり基材の樹脂ワニスの
含浸方法として工業的に非常に有用である。According to the present invention, the air in the base material is forced to flow out together with the resin varnish, and the remaining air bubbles in the prepreg can be significantly reduced. Furthermore, since it is a small-sized facility and does not have a sealing part, maintenance is easy, and it is industrially very useful as a method for impregnating resin varnish as a base material.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】樹脂ワニス含浸装置の概略横断面図。FIG. 1 is a schematic cross-sectional view of a resin varnish impregnation device.
【図２】樹脂ワニス含浸装置の概略縦断面図。FIG. 2 is a schematic vertical cross-sectional view of a resin varnish impregnation device.
Claims (1)
させ移動しながら、樹脂ワニス槽中に浸漬し、樹脂ワニ
スを強制流動させ半円筒状の有孔基材受けを通過させて
、ワニスを脱泡し循環して基材にワニスを含浸すること
を特徴とする樹脂ワニスの含浸方法Claim 1: The base material is moved into contact with a semi-cylindrical perforated base material receiver, immersed in a resin varnish tank, and the resin varnish is forced to flow through the semi-cylindrical perforated base material receiver to remove the varnish. A resin varnish impregnation method characterized by impregnating a base material with varnish by defoaming and circulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22540491A JPH04351509A (en) | 1991-05-29 | 1991-05-29 | Impregnation method with resin varnish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22540491A JPH04351509A (en) | 1991-05-29 | 1991-05-29 | Impregnation method with resin varnish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04351509A true JPH04351509A (en) | 1992-12-07 |
Family
ID=16828838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22540491A Pending JPH04351509A (en) | 1991-05-29 | 1991-05-29 | Impregnation method with resin varnish |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04351509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014224201A (en) * | 2013-05-17 | 2014-12-04 | 住友ベークライト株式会社 | Method for producing prepreg |
-
1991
- 1991-05-29 JP JP22540491A patent/JPH04351509A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014224201A (en) * | 2013-05-17 | 2014-12-04 | 住友ベークライト株式会社 | Method for producing prepreg |
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