JP5217511B2 - Prepreg manufacturing method and prepreg manufacturing apparatus - Google Patents
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- JP5217511B2 JP5217511B2 JP2008053318A JP2008053318A JP5217511B2 JP 5217511 B2 JP5217511 B2 JP 5217511B2 JP 2008053318 A JP2008053318 A JP 2008053318A JP 2008053318 A JP2008053318 A JP 2008053318A JP 5217511 B2 JP5217511 B2 JP 5217511B2
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- 238000004519 manufacturing process Methods 0.000 title description 21
- 238000005470 impregnation Methods 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 16
- 229920005989 resin Polymers 0.000 description 52
- 239000011347 resin Substances 0.000 description 52
- 239000002966 varnish Substances 0.000 description 26
- 239000004744 fabric Substances 0.000 description 17
- 239000002904 solvent Substances 0.000 description 14
- 239000011521 glass Substances 0.000 description 12
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000007865 diluting Methods 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- 238000007607 die coating method Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- -1 fluororesins Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Description
本発明は、プリント配線板等に使用されるプリプレグの製造方法及びプリプレグの製造装置に関する。 The present invention relates to a prepreg manufacturing method and a prepreg manufacturing apparatus used for printed wiring boards and the like.
プリント配線板用積層板に使用される熱硬化性樹脂含浸塗工布としてのプリプレグは、通常以下のように製造されている。すなわち、図2に示すように繊維からなる基材1を連続的に巻き出し、熱硬化性樹脂を有機溶剤で希釈した樹脂ワニスを蓄えた含浸槽4に浸漬したのち、スクイズロール3又はカットバーなどにより樹脂量を調整し、乾燥炉6で溶剤を揮発させ、熱硬化性樹脂を半硬化状態とし、冷却し、連続したプリプレグを製造し、巻取り機8で巻き取り又は切断機9で切断して製造する。このとき、スクイズロール又はカットバーで掻き落とされた樹脂は、含浸槽4に戻る。
A prepreg as a thermosetting resin-impregnated coating fabric used for a laminated board for printed wiring boards is usually produced as follows. That is, as shown in FIG. 2, the substrate 1 made of fibers is continuously unwound and immersed in an
従来のプリプレグの製造装置は、特許文献1、2に記載されたものがある。このうち特許文献1に記載されたダイを用いた両面塗工では、含浸性に劣るという問題点がある。また特許文献2に記載された予備含浸した後にコンマコータで塗布する方法では、平坦性に劣るという問題点がある。
Conventional prepreg manufacturing apparatuses are described in
これらの問題点を解決する為、塗工角度を調整したダイ塗工が、特許文献3で提案されているが、塗工する樹脂ワニスの種類、ガラスクロスの厚み等によっては、気泡の除去が不十分で含浸性に劣るという問題点がある。 In order to solve these problems, a die coating with an adjusted coating angle is proposed in Patent Document 3, but depending on the type of resin varnish to be coated, the thickness of the glass cloth, etc., the removal of bubbles may be There is a problem that it is insufficient and inferior in impregnation.
本発明は、平坦で含浸性に優れたプリプレグの製造方法及び製造装置を提供することを目的とするものである。 An object of this invention is to provide the manufacturing method and manufacturing apparatus of a prepreg which are flat and excellent in the impregnation property.
本発明者らは、繊維布からなる基材を、溶剤又は樹脂ワニスに浸漬させ、乾燥後に、ダイによる両面塗工を行うことで上記課題を解決できることを見出し、本発明を完成するに至った。 The present inventors have found that the above-mentioned problems can be solved by immersing a substrate made of a fiber cloth in a solvent or a resin varnish, and after drying, by performing double-sided coating with a die, and have completed the present invention. .
すなわち、本発明は、繊維布からなる基材を、溶剤又は樹脂ワニスを収容した含浸槽に浸漬し、含浸槽上空に設置された2本のスクイズロール又はカットバーの間を通過後若しくは乾燥後に、基材搬送路の両側に対向して配置した一対のダイにより、樹脂ワニスを両面に塗布し、乾燥することを特徴とするプリプレグの製造方法に関する。 That is, in the present invention, a base material made of a fiber cloth is immersed in an impregnation tank containing a solvent or a resin varnish, and after passing between two squeeze rolls or cut bars installed above the impregnation tank or after drying. Further, the present invention relates to a method for producing a prepreg characterized in that a resin varnish is applied to both sides by a pair of dies arranged opposite to both sides of a substrate conveyance path and dried.
また、本発明は、含浸槽、含浸槽の上空に設置されたスクイズロール又はカットバー、少なくとも2つの乾燥手段、基材搬送路の両側に対向して設置されたダイを有するプリプレグの製造装置に関する。 The present invention also relates to an impregnation tank, a squeeze roll or cut bar installed above the impregnation tank, at least two drying means, and a prepreg manufacturing apparatus having dies disposed opposite to both sides of a substrate conveyance path. .
さらに、本発明は、乾燥手段が、第1の乾燥手段及び第2の乾燥手段を有し、このうち第1乾燥手段が、スクイズロール又はカットバーと、ダイとの間の基材搬送路に設置され、第2の乾燥手段が、ダイの後方の基材搬送路に設置された上記のプリプレグの製造装置に関する。 Further, according to the present invention, the drying means includes a first drying means and a second drying means, and the first drying means is provided in the substrate conveyance path between the squeeze roll or the cut bar and the die. The prepreg manufacturing apparatus is installed, and the second drying means is installed in the base material conveyance path behind the die.
本発明によれば、プリプレグの気泡率、表裏差バラツキを低減させ、平坦で含浸性に優れたプリプレグの製造方法及び製造装置を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method and manufacturing apparatus of a prepreg which reduced the bubble rate of the prepreg and the front-back difference, and were excellent in the impregnation property can be provided.
以下、発明を実施するための最良の形態について図1を用いて詳細に説明する。
図1は、本発明の実施例になる製造装置の一例を示す全体概略図である。装置の主な構成としては、縦方向に搬送経路をもち、基材1を連続的に巻き出す巻き出し7、含浸槽4、樹脂量を調整するスクイズロール3又はカットバーを備え、乾燥炉6を2つ有し、基材搬送路の両側に対向して設置された左側ダイA10及び右側ダイB11で塗布され、巻取り機8で巻き取り又は切断機9で切断して製造する装置である。
Hereinafter, the best mode for carrying out the invention will be described in detail with reference to FIG.
FIG. 1 is an overall schematic diagram showing an example of a manufacturing apparatus according to an embodiment of the present invention. The main structure of the apparatus is a
また、基材搬送路の両側に設置された左側ダイA10及び右側ダイB11は、通常、上型、下型間に塗布液を留めるマニホールド部と流路であるランド部、吐出口となるリップ部を有し、内圧を測定するための内圧測定手段、塗布液を供給するための液供給手段が各々に接続されている。 In addition, the left die A10 and the right die B11 installed on both sides of the substrate conveyance path are usually a manifold portion that holds the coating liquid between the upper die and the lower die, a land portion that is a flow path, and a lip portion that serves as a discharge port. The internal pressure measuring means for measuring the internal pressure and the liquid supply means for supplying the coating liquid are connected to each other.
図1において塗布液は、液供給手段により各ダイ内部に供給されると、内部に形成されたマニホールド部に留まる。塗布液はこのマニホールド部にて幅方向に圧力分布を均等化されてランド部を通過し、リップ部から吐出され、基材の表面に塗布される。 In FIG. 1, when the coating liquid is supplied into each die by the liquid supply means, it remains in the manifold portion formed inside. The coating liquid equalizes the pressure distribution in the width direction in the manifold portion, passes through the land portion, is discharged from the lip portion, and is applied to the surface of the substrate.
基材搬送路の両側に対向して設置されたダイの間に搬入される基材は、繊維間の空間に空気を挟み込んでいる。対向するダイ塗工方式においては、基材に対向したダイからワニスを直接塗布する場合は、基材に樹脂ワニスが浸透する力が小さく、基材内部の空気は内部に残留する可能性がある。 The base material carried in between the dies disposed opposite to both sides of the base material conveyance path has air sandwiched between the spaces between the fibers. In the opposite die coating method, when the varnish is directly applied from the die facing the substrate, the force that the resin varnish penetrates into the substrate is small, and the air inside the substrate may remain inside .
以下に、本発明のプリプレグ製造方法について、図2の製造装置を用いた場合を一例として記述する。繊維布からなる基材1を巻き出し7から連続的に巻き出し、樹脂を溶剤で希釈した樹脂ワニス又は溶剤を蓄えた含浸槽4に浸漬した後、スクイズロール3又はカットバーのいずれかで余分な樹脂ワニス又は溶剤をそぎ落として、平坦化する。
Below, the case where the manufacturing apparatus of FIG. 2 is used is described as an example about the prepreg manufacturing method of this invention. The substrate 1 made of fiber cloth is continuously unwound from the unwinding 7 and immersed in a resin varnish in which the resin is diluted with a solvent or an
乾燥炉6で溶剤を揮発させ、樹脂を半硬化状態とし、冷却し、樹脂を溶剤で希釈した樹脂ワニスを液供給手段からダイA10及びダイB11に供給し、ダイA10及びダイB11により基材両面に樹脂ワニスを同時塗布する。それ以降は従来と同じく、乾燥炉6で溶剤を揮発させ、樹脂を半硬化状態とし、冷却し、連続したプリプレグを製造し、巻取り機8で巻き取り又は切断機9で切断して製造する。
The solvent is volatilized in the
本発明に用いる繊維布からなる基材には、ガラス布基材、紙基材等があり、樹脂ワニスに用いられる樹脂としては、例えば、フェノール樹脂、エポキシ樹脂、ポリイミド樹脂、ビスマレイド−トリアジン樹脂等の熱硬化性樹脂やフッ素樹脂、ポリフェニレンエーテル樹脂等の熱可塑性樹脂等を用いることができる。 Examples of the substrate made of the fiber cloth used in the present invention include a glass cloth substrate and a paper substrate. Examples of the resin used for the resin varnish include a phenol resin, an epoxy resin, a polyimide resin, and a bismaleide-triazine resin. Thermosetting resins, fluororesins, polyphenylene ether resins, and other thermoplastic resins can be used.
また、樹脂ワニスの希釈液として又は含浸槽での含浸液として用いられる溶剤としては、例えば、メチルエチルケトン、メチルイソブチルケトン、ジメチルホルムアミド等を用いることができる。 Moreover, as a solvent used as a dilution liquid of a resin varnish or as an impregnation liquid in an impregnation tank, methyl ethyl ketone, methyl isobutyl ketone, dimethylformamide, etc. can be used, for example.
以下に、図2に示すプリプレグ製造装置を使用してプリプレグを製造する方法の実施例を詳細に説明する。
実施例1
基材には、厚さ96μmのガラスクロスを使用した。該ガラスクロスにダイから塗布させる樹脂ワニスとしては、フェノールノボラック型エポキシ樹脂を100重量部、クレゾールノボラック樹脂60重量部、エチルメチルイミタゾール0.5重量部及び水酸化アルミニウムなどの充填材90重量部からなる樹脂組成物をメチルエチルケトン溶剤で希釈した樹脂分70重量%の樹脂ワニスを用いた。
Below, the Example of the method of manufacturing a prepreg using the prepreg manufacturing apparatus shown in FIG. 2 is described in detail.
Example 1
A glass cloth having a thickness of 96 μm was used as the substrate. As a resin varnish to be applied to the glass cloth from a die, 100 parts by weight of a phenol novolac type epoxy resin, 60 parts by weight of a cresol novolac resin, 0.5 parts by weight of ethylmethylimitazole, and 90 weights of filler such as aluminum hydroxide. A resin varnish having a resin content of 70% by weight obtained by diluting a resin composition consisting of parts with a methyl ethyl ketone solvent was used.
また、含浸槽に満たされた樹脂ワニスは、上記の樹脂組成物をメチルエチルケトン溶剤で希釈し、樹脂分30重量%の樹脂ワニスを用いた。また、同様に溶剤で希釈して各種樹脂分の樹脂ワニスを得た。 The resin varnish filled in the impregnation tank was prepared by diluting the above resin composition with a methyl ethyl ketone solvent and using a resin varnish having a resin content of 30% by weight. Similarly, resin varnishes for various resins were obtained by diluting with a solvent.
上記ガラスクロス基材の供給速度は4m/分とし、樹脂分30重量%の樹脂ワニスを蓄えた含浸槽4で浸漬した後、カットバーで余分な樹脂ワニスをそぎ落として、乾燥炉7で溶剤を揮発させ、熱硬化性樹脂を半硬化状態とし、ダイA10及びダイB11により基材両面に樹脂分70重量%の樹脂ワニスを同時塗布した。ダイ塗布後の基材は乾燥炉で溶剤を揮発させ、半硬化状態のプリプレグを作製した。
The glass cloth substrate was supplied at a rate of 4 m / min, immersed in an
得られたプリプレグは良好な外観が得られた。プリプレグの断面を顕微鏡観察したところ、ガラスクロス上の表裏樹脂層は共に25μmと表裏の厚みも均一である。
また、内部に存在する気泡の確認は、プリプレグの断面を顕微鏡観察し、横糸と縦糸の重なる部分で気泡の有無をカウントし、その比率を気泡率とした。その結果、気泡率は60%であった。
The obtained prepreg had a good appearance. When the cross section of the prepreg was observed with a microscope, both the front and back resin layers on the glass cloth had a uniform thickness of 25 μm.
In order to check the bubbles present inside, the cross section of the prepreg was observed with a microscope, the presence or absence of bubbles was counted in the overlapping portion of the weft and the warp, and the ratio was defined as the bubble ratio. As a result, the bubble rate was 60%.
実施例2
基材に、厚さ96μmのガラスクロスに替えて厚み20μmのガラスクロスを使用した以外は、実施例1と同様にしてプリプレグを作製した。ガラスクロス上の表裏樹脂層はともに10μmと表裏の厚みも均一で、気泡率は1%であった。
Example 2
A prepreg was produced in the same manner as in Example 1, except that a glass cloth having a thickness of 20 μm was used instead of the glass cloth having a thickness of 96 μm. Both the front and back resin layers on the glass cloth had a uniform thickness of 10 μm, and the front and back thickness was 1%.
実施例3
含浸槽に満たされた樹脂ワニスを、樹脂分30重量%の樹脂ワニスに替えて、樹脂分45重量%ワニスを用いた以外は、実施例1と同様にしてプリプレグを作製した結果、ガラスクロス上の表裏樹脂層はともに厚み均一で、気泡率は70%であった。
Example 3
As a result of producing a prepreg in the same manner as in Example 1 except that the resin varnish filled in the impregnation tank was replaced with a resin varnish with a resin content of 30% by weight, and a resin content of 45% by weight was used. Both the front and back resin layers had a uniform thickness and a cell ratio of 70%.
実施例4
含浸槽に満たされた樹脂ワニスを、樹脂分30重量%の樹脂ワニスに替えて、樹脂分約45重量%ワニスを用いた以外は、実施例2と同様にしてプリプレグを作製した結果、ガラスクロス上の表裏樹脂層はともに厚み均一で、気泡率は1%であった。
Example 4
As a result of producing a prepreg in the same manner as in Example 2 except that the resin varnish filled in the impregnation tank was replaced with a resin varnish with a resin content of 30% by weight and a resin content of about 45% by weight was used, a glass cloth was obtained. Both the upper and lower resin layers had a uniform thickness, and the bubble ratio was 1%.
比較例1
含浸槽での浸漬、カットバーでの平坦化、乾燥を行わずに、巻き出し7からダイへ基材を搬送し、ダイ塗工及びその後の工程のみ実施例1と同様にしてプリプレグを製造した。その結果、得られたプリプレグの気泡率は80%であった。
Comparative Example 1
Without performing immersion in the impregnation tank, flattening with a cut bar, and drying, the substrate was conveyed from the unwinding 7 to the die, and the prepreg was manufactured in the same manner as in Example 1 only in die coating and the subsequent steps. . As a result, the bubble ratio of the obtained prepreg was 80%.
比較例2
基材に、厚さ96μmのガラスクロスに替えて厚み20μmのガラスクロスを使用した以外は、比較例1と同様にしてプリプレグを作製した結果、得られたプリプレグの気泡率は2%であった。
Comparative Example 2
As a result of producing a prepreg in the same manner as in Comparative Example 1 except that a glass cloth having a thickness of 20 μm was used instead of the glass cloth having a thickness of 96 μm as the base material, the cell ratio of the obtained prepreg was 2%. .
1 基材
2 樹脂ワニス
3 スクイズロール
4 含浸槽
5 ガイドロール
6 乾燥炉
7 巻き出し
8 巻取り機
9 切断機、
10 ダイA
11 ダイB
12 定量ポンプA
13 定量ポンプB
DESCRIPTION OF SYMBOLS 1
10 Die A
11 Die B
12 Metering pump A
13 Metering pump B
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RU200933U1 (en) * | 2020-07-28 | 2020-11-19 | Общество с ограниченной ответственностью «ЛУЧ» | Mobile impregnation line for the production of UV-curable prepregs |
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JPH08174549A (en) * | 1994-12-27 | 1996-07-09 | Matsushita Electric Works Ltd | Production of prepreg |
JP2929189B2 (en) * | 1998-05-01 | 1999-08-03 | 井上金属工業株式会社 | Double-sided simultaneous coating device |
JP2001122992A (en) * | 1999-10-25 | 2001-05-08 | Hitachi Chem Co Ltd | Production of prepreg, nozzle using for producing prepreg and apparatus for producing prepregs |
JP3499837B2 (en) * | 2001-03-13 | 2004-02-23 | 住友ベークライト株式会社 | Manufacturing method of prepreg |
JP2002284908A (en) * | 2001-03-22 | 2002-10-03 | Toshiba Chem Corp | Method for producing prepreg |
JP4152230B2 (en) * | 2003-03-26 | 2008-09-17 | 住友ベークライト株式会社 | Manufacturing method of composite substrate |
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2008
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Cited By (1)
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RU200933U1 (en) * | 2020-07-28 | 2020-11-19 | Общество с ограниченной ответственностью «ЛУЧ» | Mobile impregnation line for the production of UV-curable prepregs |
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