JPH05235503A - Cutting method for prepreg - Google Patents
Cutting method for prepregInfo
- Publication number
- JPH05235503A JPH05235503A JP4036244A JP3624492A JPH05235503A JP H05235503 A JPH05235503 A JP H05235503A JP 4036244 A JP4036244 A JP 4036244A JP 3624492 A JP3624492 A JP 3624492A JP H05235503 A JPH05235503 A JP H05235503A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- prepreg
- glass fiber
- cutting
- cut
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 10
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- 239000003365 glass fiber Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000010000 carbonizing Methods 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 abstract description 16
- 239000000835 fiber Substances 0.000 abstract description 8
- 238000010008 shearing Methods 0.000 abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 239000011521 glass Substances 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ガラス繊維基材のプ
リプレグの切断加工に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting process of a prepreg of a glass fiber base material.
【０００２】[0002]
【従来の技術】従来は、ガラス繊維基材に樹脂を含浸
し、乾燥して樹脂を半硬化させたプリプレグの切断加工
にはギロチン、ロータリカッター、シャーリング、鋸刃
などの切断刃を用いる方法が一般的に行われていた。し
かし、含浸樹脂とガラス繊維の接着力が弱く、含浸樹脂
が半硬化で脆いために、ギロチン、ロータリカッター、
シャーリング、鋸刃などの切断刃で切断すると、切断面
から樹脂の粉やガラス繊維の粉、繊維が飛散し作業環境
を悪くするだけでなくプリプレグの表面、端面、周囲に
散乱し、特にプリプレグ表面上に付着した粉や繊維は静
電気の作用もあって集塵をかけても殆ど効果的に除去で
きない。このようなプリプレグに次工程で銅箔を重ねて
積層成形すると異物混入の不良の銅張積層板となる。
又、銅張積層板を使ったプリント配線板は最近の微細回
路化に伴い２０〜３０μｍの樹脂の粉やガラス繊維の
粉、繊維でも回路間で短絡、断線を引き起こす。そこで
切断面からの粉やガラス繊維の飛散を防ぐためにプリプ
レグ全体を加熱して切断する方法などが試みられている
が切断刃に樹脂の付着が起こり刃の寿命低下及び切断不
良などが発生する問題を有している。2. Description of the Related Art Conventionally, a method of using a cutting blade such as a guillotine, a rotary cutter, a shearing blade, or a saw blade has been used for cutting a prepreg obtained by impregnating a glass fiber base material with a resin and then drying and semi-curing the resin. It was commonly done. However, the adhesive strength between the impregnated resin and glass fiber is weak, and the impregnated resin is semi-cured and brittle, so guillotine, rotary cutter,
When cutting with a cutting blade such as a shirring or saw blade, resin powder, glass fiber powder, and fibers scatter from the cut surface, which not only deteriorates the working environment but also scatters on the surface of the prepreg, the end surface, and the periphery, especially the prepreg surface. The powder and fibers that adhere to the top can be removed almost effectively even if dust is collected due to the action of static electricity. When a copper foil is laminated on the prepreg in the next step and laminated and formed, a copper clad laminate having a foreign substance mixed therein becomes defective.
Further, a printed wiring board using a copper clad laminate causes a short circuit and a disconnection between circuits even with powder of resin of 20 to 30 μm, powder of glass fiber, and fiber due to recent miniaturization of circuits. Therefore, in order to prevent the scattering of powder and glass fibers from the cutting surface, a method of heating and cutting the entire prepreg has been attempted, but the problem of resin adhesion to the cutting blade and shortened blade life and poor cutting occurs have.
【０００３】また最近、レーザーによる方法も試行され
ているがレーザーでガラス繊維と樹脂の両方を同時に切
断しょうとするとガラス繊維は切断できても樹脂が炭化
してしまい、又、樹脂が炭化しない程度のレーザーの出
力ではガラス繊維が切断できない問題を有していた。Recently, a method using a laser has been tried, but if it is attempted to simultaneously cut both glass fiber and resin with a laser, the resin is carbonized even if the glass fiber can be cut, and the resin is not carbonized. There was a problem that the glass fiber could not be cut by the output of the laser.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明はプリ
プレグの切断において、切断面から飛散する樹脂の粉や
ガラス繊維の粉、破損繊維を阻止し、切断刃への樹脂の
付着を発生させないプリプレグの切断方法を提供するこ
とにある。SUMMARY OF THE INVENTION Therefore, the present invention prevents prepregs from cutting resin powder, glass fiber powder, and broken fibers scattered from the cutting surface during cutting of the prepreg and preventing adhesion of the resin to the cutting blade. To provide a cutting method.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の点に鑑
みて為されたものであり、その特徴は、プリプレグの樹
脂部分を炭化させずにレーザーで切断し、次に基材のガ
ラス繊維を切断刃で切断するプリプレグの切断方法にあ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is characterized in that a resin portion of a prepreg is cut by a laser without being carbonized, and then a glass of a base material is used. It is a method of cutting a prepreg in which fibers are cut with a cutting blade.
【０００６】以下に本発明の説明をする。本発明のプリ
プレグの切断は、プリプレグの切断にレーザーを用いる
に当たっては、ガラス繊維基材に含浸、乾燥して半硬化
させたプリプレグの樹脂を炭化させない程度の出力で照
射する必要がある。この程度の出力ではプリプレグの基
材のガラス繊維は切断できないので、次にレーザーで切
断できなかったガラス繊維を、ギロチン、ロータリカッ
ター、シャーリング、鋸刃などの切断刃で切断する。す
なわち、２つの切断方法を組み合わせて、まずレーザー
での切断、次に切断刃での切断の順にプリプレグの切断
を行うものである。The present invention will be described below. When a laser is used for cutting the prepreg of the present invention, it is necessary to irradiate the glass fiber base material with an output that does not carbonize the resin of the prepreg that has been impregnated into the glass fiber base material and dried and semi-cured. Since the glass fiber of the base material of the prepreg cannot be cut with this level of output, the glass fiber that could not be cut with a laser is cut with a cutting blade such as a guillotine, rotary cutter, shearing, or saw blade. That is, by combining the two cutting methods, the prepreg is cut in the order of cutting with a laser and then with a cutting blade.
【０００７】この手順でガラス繊維基材のプリプレグを
切断すると、プリプレグの含浸樹脂とガラス繊維の接着
力が弱く、含浸樹脂が半硬化で脆くとも、レーザーでの
切断時の熱で半硬化樹脂が溶融し基材のガラス繊維によ
り密着すると同時に硬化がさらに進行し樹脂の脆さが改
善される。この結果、次に行うギロチン、ロータリカッ
ター、シャーリング、鋸刃などの切断刃での切断時に
も、基材のガラス繊維は密着してコ−ティングされた樹
脂のためにガラス繊維の粉、破損繊維の発生が阻止され
る。したがって、作業環境を悪くしたり、プリプレグの
表面、端面、周囲に散乱し付着することがなくなる。特
に、プリプレグ表面上に付着物がなくなるので最近の微
細回路化にも対応できる異物混入のない銅箔張り積層板
が得られるのである。又、レーザーでの切断時の熱で含
浸樹脂が半硬化からさらに硬化が進行し樹脂のベタつき
がなくなるために次に行うギロチン、ロータリカッタ
ー、シャーリング、鋸刃などの切断刃での切断時にも、
これら切断刃への樹脂の付着が防止できるのである。When the prepreg of the glass fiber base material is cut by this procedure, the adhesive force between the impregnating resin of the prepreg and the glass fiber is weak, and even if the impregnating resin is semi-cured and brittle, the semi-cured resin is heated by the heat during cutting with a laser. At the same time as it melts and adheres to the glass fiber of the base material, the curing further progresses and the brittleness of the resin is improved. As a result, the glass fiber of the base material adheres closely to the resin coated during the cutting with a cutting blade such as a guillotine, a rotary cutter, a shirring blade, and a saw blade. Is prevented from occurring. Therefore, the work environment is not deteriorated, and the prepreg is prevented from being scattered and attached to the surface, the end face, and the periphery. In particular, since there are no deposits on the surface of the prepreg, it is possible to obtain a copper foil-clad laminate that is compatible with recent finer circuits and is free of foreign matter. Also, when cutting with a cutting blade such as a guillotine, a rotary cutter, a shearing, a saw blade, etc., which is performed next time because the impregnated resin is further cured from semi-curing due to heat at the time of cutting with a laser and stickiness of the resin disappears,
The resin can be prevented from adhering to these cutting blades.
【０００８】本発明のプリプレグは、ガラス繊維基材に
樹脂を含浸乾燥し半硬化させたもので熱硬化性樹脂のＢ
ステージ状態の樹脂含浸ガラス繊維基材であり、さらに
加熱すると樹脂は溶融した後、硬化できる状態のもので
ある。The prepreg of the present invention is obtained by impregnating a glass fiber base material with a resin, drying and semi-curing the resin, which is a thermosetting resin B.
It is a resin-impregnated glass fiber base material in a stage state, and is a state in which the resin can be cured after being melted by further heating.
【０００９】樹脂としては、エポキシ樹脂、ポリイミド
樹脂、不飽和ポリエステル、ポリフェニレンオキシドな
どの単独、変性物、混合物などを適宜用いることができ
る。又これら樹脂に水酸化アルミニウム、酸化亜鉛、ア
ルミナ、シリカ、炭酸カルシュウム、タルク、クレー、
硫酸バリュウムなどの粉体、ゾル状態、中空体の無機充
填剤を含有させたものを用途に応じて適宜用いることが
できる。As the resin, an epoxy resin, a polyimide resin, an unsaturated polyester, a polyphenylene oxide, etc., a single substance, a modified substance, a mixture or the like can be appropriately used. In addition, aluminum hydroxide, zinc oxide, alumina, silica, calcium carbonate, talc, clay,
A powder containing a powder such as barium sulfate, a sol state, or a hollow inorganic filler can be appropriately used according to the application.
【００１０】基材としてはガラス繊維からなるガラス
布、ガラス不織布、ガラスマットなどを用途に応じて単
独、または組み合わせて適宜用いることができる。As the substrate, a glass cloth made of glass fibers, a glass nonwoven fabric, a glass mat or the like can be used alone or in combination according to the application.
【００１１】これら基材に樹脂を含浸、乾燥させてプリ
プレグを得るには、前記それぞれの樹脂を溶剤で樹脂ワ
ニスとし、基材に対して２０〜８５重量％の範囲の樹脂
含有率となるように含浸し、各樹脂の半硬化条件に応じ
て、乾燥温度６０〜１８０℃、時間１５〜１５０分間程
度で乾燥することによって得られる。In order to obtain a prepreg by impregnating these substrates with a resin and drying them, a resin varnish is formed from each of the above resins so that the resin content is in the range of 20 to 85% by weight with respect to the substrate. And a drying temperature of 60 to 180 ° C. for 15 to 150 minutes depending on the semi-curing condition of each resin.
【００１２】本発明の切断方法は、軟らか材質の物と硬
い材質の物との混合物、積層物例えば耐熱ベルト、ＦＲ
Ｐ、金属基板積層板等の切断にも応用することができ
る。The cutting method of the present invention is a mixture of a soft material and a hard material, a laminate such as a heat-resistant belt, FR.
It can also be applied to the cutting of P, metal substrate laminated plates and the like.
【００１３】[0013]
【実施例】（実施例１）低ブロム型エポキシ樹脂８０重
量部、ノボラック型エポキシ樹脂２０重量部、ジシアン
ジアミン３重量部、2E4MZ 0.1PHRでなるＦＲ−４の樹脂
を仕様2116タイプのガラス布( 日東紡社製。116E）に５
４％のレジンコンテントとなるように含浸乾燥して得た
ガラス布基材エポキシ樹脂のプリプレグをまずレーザー
で含浸樹脂を炭化させないように切断した後、残ったガ
ラス布をロータリカッターで切断して略１ｍ2 角のプリ
プレグを得た。このプリプレグ４枚とその外側に３５μ
ｍの銅箔を積層し、加熱加圧成形条件130 ℃、圧力 5ｋ
ｇ／ｃｍ2 で５分間、圧力２５ｋｇ／ｃｍ2 で25分間、
更に170 ℃、圧力25ｋｇ／ｃｍ2 で60分間成形し約１ｍ
2 角の両面銅箔張りガラス布基材エポキシ樹脂積層板を
得た。この銅張積層板２０００枚の表面異物混入不良率
は0.05％であった。 （比較例１）実施例１と同じガラス布基材エポキシ樹脂
のプリプレグをロータリカッターで切断して得た略１ｍ
2 角のプリプレグ４枚とその外側に３５μｍの銅箔を積
層し、実施例１と同様に約１ｍ2 角の両面銅箔張りガラ
ス布基材エポキシ樹脂積層板を得た。この銅張積層板５
００枚の表面異物混入不良率は４％であった。Example 1 A FR-2 resin consisting of 80 parts by weight of a low-brom type epoxy resin, 20 parts by weight of a novolak type epoxy resin, 3 parts by weight of dicyandiamine, and 2E4MZ 0.1 PHR was used as a specification 2116 type glass cloth. (Nitobo Co., Ltd. 116E) 5
The glass cloth base material epoxy resin prepreg obtained by impregnation and drying to obtain a resin content of 4% was first cut with a laser so as not to carbonize the impregnated resin, and then the remaining glass cloth was cut with a rotary cutter to obtain A 1 m 2 square prepreg was obtained. 4 pieces of this prepreg and 35μ on the outside
m copper foil is laminated, and heat and pressure molding conditions are 130 ℃, pressure is 5k.
g / cm 2 for 5 minutes, pressure 25 kg / cm 2 for 25 minutes,
Molded at 170 ℃ and pressure of 25kg / cm 2 for 60 minutes, then about 1m
To obtain a double-sided copper foil-clad glass cloth-based epoxy resin laminated plate of second angle. The defective rate of foreign matter inclusion on the surface of the 2000 copper clad laminates was 0.05%. (Comparative Example 1) Approximately 1 m obtained by cutting a prepreg of the same glass cloth base epoxy resin as in Example 1 with a rotary cutter
Four double- sided prepregs and a 35 μm copper foil were laminated on the outside thereof to obtain a double-sided copper foil-clad epoxy resin laminate with double-sided copper foil about 1 m 2 in the same manner as in Example 1. This copper clad laminate 5
The defect rate of 100 foreign matters on the surface was 4%.
【００１４】[0014]
【作用】プリプレグを構成するガラス繊維基材と含浸樹
脂の切断において、レーザーで切断する時には含浸樹脂
は基材にコ−ティングされるように切断されるので切断
面からの樹脂の粉の発生は阻止され、次に前記樹脂コ−
ティングされたガラス繊維を切断刃で切断することにな
るのでガラス繊維の粉、破損繊維の発生も阻止できるの
である。In the cutting of the glass fiber base material constituting the prepreg and the impregnated resin, the impregnated resin is cut so as to be coated on the base material when cutting with a laser, so that the generation of resin powder from the cut surface does not occur. Blocked, then the resin core
Since the cut glass fiber is cut with a cutting blade, it is possible to prevent the generation of glass fiber powder and broken fiber.
【００１５】[0015]
【発明の効果】本発明によって、プリプレグの切断にお
いて、切断面から樹脂の粉やガラス繊維の粉、破損繊維
の飛散を阻止でき、切断刃に樹脂の付着を発生させるこ
となくプリプレグを切断することができる。According to the present invention, in cutting a prepreg, scattering of resin powder, glass fiber powder, and broken fiber from the cut surface can be prevented, and the prepreg can be cut without causing the resin to adhere to the cutting blade. You can
Claims (1)
ーザーで切断し、次に基材のガラス繊維を切断刃で切断
することを特徴とするプリプレグの切断方法。1. A method for cutting a prepreg, which comprises cutting the resin portion of the prepreg with a laser without carbonizing it, and then cutting the glass fiber of the base material with a cutting blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036244A JPH05235503A (en) | 1992-02-24 | 1992-02-24 | Cutting method for prepreg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036244A JPH05235503A (en) | 1992-02-24 | 1992-02-24 | Cutting method for prepreg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05235503A true JPH05235503A (en) | 1993-09-10 |
Family
ID=12464363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4036244A Pending JPH05235503A (en) | 1992-02-24 | 1992-02-24 | Cutting method for prepreg |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05235503A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054100A1 (en) * | 1998-04-16 | 1999-10-28 | Leonhard Kurz Gmbh & Co. | Method and device for cutting sheets comprised of a carrier film and a decorative layer located thereon, especially embossed sheets |
| US6621046B2 (en) | 2001-12-25 | 2003-09-16 | Matsushita Electric Works, Ltd. | Method of manufacturing prepreg |
-
1992
- 1992-02-24 JP JP4036244A patent/JPH05235503A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054100A1 (en) * | 1998-04-16 | 1999-10-28 | Leonhard Kurz Gmbh & Co. | Method and device for cutting sheets comprised of a carrier film and a decorative layer located thereon, especially embossed sheets |
| AU739498B2 (en) * | 1998-04-16 | 2001-10-11 | Leonhard Kurz Gmbh & Co. | Method and apparatus for cutting foils comprising a carrier film and a decorative layer disposed thereon, in particular stamping foils |
| US6621046B2 (en) | 2001-12-25 | 2003-09-16 | Matsushita Electric Works, Ltd. | Method of manufacturing prepreg |
| EP1323505A3 (en) * | 2001-12-25 | 2004-01-02 | Matsushita Electric Works, Ltd. | Method and apparatus for cutting prepreg |
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