JPH0423888B2 - - Google Patents
Info
- Publication number
- JPH0423888B2 JPH0423888B2 JP61246118A JP24611886A JPH0423888B2 JP H0423888 B2 JPH0423888 B2 JP H0423888B2 JP 61246118 A JP61246118 A JP 61246118A JP 24611886 A JP24611886 A JP 24611886A JP H0423888 B2 JPH0423888 B2 JP H0423888B2
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- laminate
- strip
- shaped
- strips
- 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
- 239000000463 material Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 12
- 238000003475 lamination Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 11
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 この発明は、積層板の製法に関する。[Detailed description of the invention] 〔Technical field〕 The present invention relates to a method for manufacturing a laminate.
積層板を能率良く得る方法として、連続工程が
ある。従来、この連続工法は、帯状のプリプレグ
や帯状の銅箔等を含む複数枚の帯状材料をダブル
ベルトプレス等の加圧成形装置に連続的に送り込
み、その加圧成形装置で連続的に積層成形する工
程を経て、積層板を得るようにするものであつ
た。
A continuous process is a method for efficiently producing laminates. Conventionally, this continuous construction method involves continuously feeding multiple strips of material, including strips of prepreg and strips of copper foil, into a pressure forming device such as a double belt press, and then continuously laminating them in the pressure forming device. The process was to obtain a laminate.
ところが、この方法で得られた積層板は、反り
およびねじれが大きかつた。これは、つぎのよう
なことが原因となつていたためであつた。 However, the laminate obtained by this method was highly warped and twisted. This was due to the following reasons.
第２図にみるように、帯状のプリプレグ５０
は、通常、巻き出し装置（図示省略）にロール状
に巻かれた状態で設置されていて、この巻き出し
装置で連続的に巻き出され、加圧成形装置５１に
送り込まれるようになつていた。加圧成形装置５
１に送り込まれる帯状のプリプレグ５０にたるみ
が発生すると、反りおよびねじれの発生原因とな
る。そのため、巻き出し装置と加圧成形装置と
は、前もつて芯だしが行われていた。しかし、こ
れを行つておいても、プリプレグ５０の左右にお
ける極僅かなレジンコンテント量の差が累積さ
れ、これがロール状に巻かれた状態のプリプレグ
における左右の周径の差となつて、巻き出された
プリプレグ５０の左右どちらかにたるみ５２が発
生してしまつていた。このため、これが原因とな
つて得られる積層板が反りおよびねじれの大きな
ものになつていたのである。 As shown in FIG. 2, a strip-shaped prepreg 50
is usually installed in a rolled state in an unwinding device (not shown), and is continuously unwound by this unwinding device and fed into the pressure forming device 51. . Pressure molding device 5
If sagging occurs in the band-shaped prepreg 50 fed into the prepreg 1, it causes warping and twisting. For this reason, the unwinding device and the pressure forming device were previously subjected to centering. However, even if this is done, the extremely small difference in the amount of resin content between the left and right sides of the prepreg 50 will accumulate, and this will become a difference in the circumferential diameter between the left and right sides of the prepreg wound into a roll. A sag 52 had occurred on either the left or right side of the prepreg 50. As a result, the resulting laminates were highly warped and twisted.
そこで、このたるみ５２をEPC（エツチプレス
コントロール）により取り除くことが行われた
が、たるみを取り除くことができても、所詮、プ
リプレグを斜めにした状態で加圧成形装置２に送
り込んだことになり、結局、これが原因となつ
て、得られる積層板に大きな反りおよびねじれが
発生し、ひどくなると、しわによるしわ不良とな
つてしまつていたのである。 Therefore, this slack 52 was removed using EPC (Etch Press Control), but even if the slack could be removed, the prepreg would still be fed into the pressure molding device 2 in an oblique state. As a result, this resulted in large warping and twisting of the resulting laminate, which, when severe, resulted in wrinkle defects due to wrinkles.
以上の事情に鑑みて、この発明は、得られる積
層板の反りおよびねじれを極めて小さくすること
ができる積層板の製法を提供することを目的とす
る。
In view of the above circumstances, an object of the present invention is to provide a method for manufacturing a laminate that can extremely minimize warping and twisting of the resulting laminate.
前記目的を達成するため、発明者らは、種々実
験研究を重ねた。実験研究を重ねた結果、プリプ
レグの基材は、含浸前の基材単独では若干の動き
があり、基材のみで加圧成形装置に送り込んでも
しわの発生がないと言うことがわかつた。そし
て、さらに実験研究を繰り返した結果、反りおよ
びねじれが発生する原因は、プリプレグが、その
基材が織布、不織布であることを問わず、繊維の
全ての交点において樹脂により目止めされてお
り、たるみ等によるひずみの解消ができないから
であると言うことがわかつた。
In order to achieve the above object, the inventors conducted various experimental studies. As a result of repeated experimental research, it was found that prepreg base materials exhibit some movement when used alone before being impregnated, and that wrinkles do not occur even when the base material alone is fed into a pressure molding device. Further experimental research revealed that the cause of warping and twisting is that the prepreg is sealed with resin at all intersections of fibers, regardless of whether the base material is woven or nonwoven. It was found that this was because the strain caused by sagging etc. could not be eliminated.
そこで、発明者らは、上記結果を基に種々検討
を重ねた結果、積層成形前に一旦、帯状のプリプ
レグをテンシヨンを加えた状態で加熱溶融させれ
ば、得られる積層板の反りおよびねじれを極めて
小さくすることができると言うことを見出し、こ
の発明を完成した。 As a result of various studies based on the above results, the inventors found that by heating and melting the strip-shaped prepreg under tension before lamination molding, the resulting laminate could be prevented from warping and twisting. He discovered that it could be made extremely small and completed this invention.
すなわち、この発明は、帯状のプリプレグ１枚
以上を含む複数枚の帯状材料を連続的に積層成形
する工程を含む積層板の製法において、前記積層
成形前に一旦、前記帯状のプリプレグをテンシヨ
ンを加えた状態で加熱溶融させることを特徴とす
る積層板の製法をその要旨とする。 That is, the present invention provides a method for manufacturing a laminate that includes a step of continuously laminating and molding a plurality of strips of material including one or more strips of prepreg, in which the strips of prepreg are once subjected to tension before the lamination molding. The gist of this invention is a method for manufacturing a laminate, which is characterized by heating and melting the laminate in a state where the laminate is heated and melted.
以下に、この発明を、その一実施例をあらわす
図面を参照しながら詳しく説明する。 Hereinafter, the present invention will be explained in detail with reference to the drawings showing one embodiment thereof.
第１図は、この発明にかかる積層板の製法の一
実施例をあらわしている。図にみるように、ロー
ル状に巻かれた帯状のプリプレグ１を連続的に巻
き出した後、ガイドロール２およびテンシヨンロ
ール３で案内しつつ、加熱装置４に通すようにす
る。加熱装置４では、通されたプリプレグ１を加
熱溶融、詳しくは、含浸樹脂を加熱溶融するよう
になつている。プリプレグ１は、この加熱溶融に
より、伸縮性を有する状態になる。前記ガイドロ
ール２は固定されているが、テンシヨンロール３
は図中、矢印Ａで示す方向に常に付勢されてい
て、加熱装置４に通されたプリプレグ１にテンシ
ヨンを加えるようになつている。これにより、加
熱装置４に通されたプリプレグ１には、伸縮性を
有する状態でテンシヨンが加えられ、その結果、
巻き出した時などにできるプリプレグのひずみが
解消される。なお、プリプレグにかけるテンシヨ
ンの強さおよび溶融温度は、プリプレグの基材の
種類および含浸樹脂の種類に応じて適宜選ぶよう
にする。 FIG. 1 shows an embodiment of the method for manufacturing a laminate according to the present invention. As shown in the figure, after a strip-shaped prepreg 1 wound into a roll is continuously unwound, it is passed through a heating device 4 while being guided by a guide roll 2 and a tension roll 3. The heating device 4 heats and melts the prepreg 1 passed through it, and more specifically heats and melts the impregnated resin. The prepreg 1 becomes elastic due to this heating and melting. The guide roll 2 is fixed, but the tension roll 3
is always biased in the direction indicated by arrow A in the figure, and applies tension to the prepreg 1 passed through the heating device 4. As a result, tension is applied to the prepreg 1 passed through the heating device 4 in a stretchable state, and as a result,
This eliminates the distortion of prepreg that occurs when unrolling. The strength of the tension applied to the prepreg and the melting temperature are appropriately selected depending on the type of base material of the prepreg and the type of impregnated resin.
つぎに、溶融されたプリプレグ１′の両側に帯
状の金属箔５がそれぞれ配置されるようにして、
これら複数枚の帯状材料を連続的にダブルベルト
プレス（加圧成形装置）６に送り込むようにす
る。この際、プリプレグ１′は、溶融状態のまま
ダブルベルトプレス６に対して真つ直ぐに送り込
まれる。ダブルベルトプレス６は、僅かな間隔を
置いて上下に配置された一対のスチールベルト６
０，６１を備えている。スチールベルト６０，６
１は、それぞれ離間した２個のロール６２，６３
に巻き掛けられていて、ロールの回転により、間
に送り込まれた複数枚の帯状材料を図中、矢印Ｂ
方向に送り出すように走行している。このスチー
ルベルト６０，６１は、熱盤となつていて、これ
らの温度は、上下とも170℃程度にされている。
６４は、押圧ロールであつて、スチールベルト６
０，６１が帯状材料から浮き上がらないようにす
る働きをしている。ダブルベルトプレス６に送り
込まれた、すなわち、ダブルベルトプレスの上下
一対のスチールベルト６０，６１間に送り込まれ
た帯状のプリプレグ１′および帯状の金属箔５等
の複数枚の帯状材料は、連続的にスチールベルト
６０，６１間で加熱されるとともに20Kg／cm2程度
の圧力で加圧されることにより積層成形されて、
帯状の積層体７となる。このようにして得られた
帯状の積層体７を、この後、アフタキユア炉８に
通し、アフターキユアしてから、カツタ９等で所
望の大きさに切断するようにして積層板１０を得
るようにする。 Next, strip-shaped metal foils 5 are arranged on both sides of the melted prepreg 1',
These plurality of strip materials are continuously fed into a double belt press (pressure forming device) 6. At this time, the prepreg 1' is fed straight into the double belt press 6 in a molten state. The double belt press 6 consists of a pair of steel belts 6 placed one above the other with a slight interval between them.
0.61. steel belt 60,6
1 is two rolls 62, 63 spaced apart from each other.
The arrow B in the figure indicates the multiple strips of material that are wound around the rollers and fed between them by the rotation of the rolls.
It runs as if sending it out in a certain direction. These steel belts 60, 61 serve as heating plates, and their temperature is set to about 170° C. for both the upper and lower ends.
64 is a pressure roll, and the steel belt 6
0.61 serves to prevent the particles from rising from the strip material. The plurality of strip materials such as the strip prepreg 1' and the strip metal foil 5 fed into the double belt press 6, that is, between the pair of upper and lower steel belts 60, 61 of the double belt press, are continuously It is then heated between steel belts 60 and 61 and pressurized at a pressure of about 20 kg/cm 2 to form a layered product.
A strip-shaped laminate 7 is obtained. The strip-shaped laminate 7 thus obtained is then passed through an after-cure furnace 8 for after-curing, and then cut into a desired size with a cutter 9 or the like to obtain a laminate 10. .
以上にみるように、この積層板の製法は、ダブ
ルベルトプレス６で積層成形する前に一旦、帯状
のプリプレグ１をテンシヨンを加えた状態で加熱
溶融させている。そのため、その工程でプリプレ
グ１のひずみを解消することができ、得られる積
層板１０の反りおよびねじれを極めて小さくする
ことができるのである。 As described above, in the manufacturing method of this laminate, before lamination molding is performed using the double belt press 6, the band-shaped prepreg 1 is once heated and melted under tension. Therefore, the distortion of the prepreg 1 can be eliminated in this process, and the warpage and twisting of the resulting laminate 10 can be made extremely small.
この発明に用いられる複数枚の帯状材料は、全
てが帯状のプリプレグであつてもよく、帯状の銅
箔等の金属箔など、他の帯状材料を含んでいても
よい。要するに、複数枚の帯状材料に帯状のプリ
プレグを１枚以上含んでいればよい。プリプレグ
の基材は、ガラス布基材、合成繊維布基材、紙基
材など種類に特に限定はないが、引つ張りに対し
て強いものを用いるのが好ましい。プリプレグの
含浸樹脂としては、エポキシ樹脂、ポリイミド樹
脂、フツ素樹脂、不飽和ポリエステル樹脂などの
熱硬化性樹脂を用いるようにする。成形圧力は、
低圧、高圧を問わない。 The plurality of strip-shaped materials used in the present invention may all be strip-shaped prepregs, or may contain other strip-shaped materials such as strip-shaped metal foils such as copper foil. In short, it is sufficient if the plurality of strip-shaped materials include one or more strip-shaped prepregs. The prepreg base material is not particularly limited in type, such as glass cloth base material, synthetic fiber cloth base material, paper base material, etc., but it is preferable to use one that is strong against tension. As the impregnating resin for the prepreg, a thermosetting resin such as an epoxy resin, a polyimide resin, a fluorine resin, or an unsaturated polyester resin is used. The molding pressure is
Doesn't matter whether it's low pressure or high pressure.
前記実施例では、プリプレグを溶融状態で積層
成形していたが、溶融後、一旦冷却して固体状態
にしてから積層成形するようにしてもよい。要す
るに、積層成形前に一旦、プリプレグをテンシヨ
ンを加えた状態で加熱溶融させる工程を行うよう
にすればよい。 In the above embodiment, the prepreg was laminated in a molten state, but after being melted, it may be cooled once to a solid state and then laminated. In short, before lamination molding, a step of heating and melting the prepreg under tension may be performed.
つぎに、実施例と比較例とを示す。 Next, examples and comparative examples will be shown.
（実施例）
帯状のガラス布（日東紡績株式会社製WE18G，
203ｇ／m2、厚み0.18mm）に下記に示す配合割合
のエポキシ樹脂ワニスを含浸させて得られたレジ
ンコンテント41wt％の帯状のプリプレグ３枚を
ロール状に巻かれた状態から巻き出した後、それ
ぞれテンシヨンを加えた状態で170℃で加熱溶融
させ、これら帯状のプリプレグ３枚の両側にそれ
ぞれ帯状の銅箔（厚み18μm）を配し、これらを
上下一対の熱盤間で170℃、20Kg／cm2、５分間の
条件で積層成形して、帯状の積層体を得た。得ら
れた帯状の積層体を170℃で30分間アフターキユ
アした後、切断して500mm×500mmの大きさで厚み
0.6mmの積層板を得た。(Example) Band-shaped glass cloth (WE18G manufactured by Nittobo Co., Ltd.,
203 g/m 2 , thickness 0.18 mm) was impregnated with an epoxy resin varnish having the proportion shown below, and the resin content was 41 wt%. Three strips of prepreg were unwound from a roll. Each of these prepregs was heated and melted at 170℃ with tension applied, and strips of copper foil (thickness 18μm) were placed on both sides of each of these three strip-shaped prepreg sheets, and these were heated at 170℃ between a pair of upper and lower heating plates at 20Kg/ cm2 for 5 minutes to obtain a strip-shaped laminate. After curing the resulting strip-shaped laminate at 170°C for 30 minutes, it was cut into pieces of 500 mm x 500 mm in thickness.
A 0.6 mm laminate was obtained.
エピコート1001（シエル化学株式会社製）
100重量部
ジシアンジアミド ４重量部
ベンジルジメチルアミン 0.2重量部
エチルオキシトール 100重量部
（比較例）
帯状のプリプレグ３枚を巻き出した後、加熱溶
融させなかつた以外は、前記実施例と同様にして
積層板を得た。
Epicote 1001 (manufactured by Ciel Chemical Co., Ltd.)
100 parts by weight Dicyandiamide 4 parts by weight Benzyldimethylamine 0.2 parts by weight Ethyloxytol 100 parts by weight (Comparative example) After unrolling the three strip-shaped prepregs, the layers were laminated in the same manner as in the previous example, except that they were not heated and melted. Got the board.
以上、得られた積層板についてそれぞれエツチ
ングした後、170℃で１時間加熱して反りおよび
ねじれの測定を行つた。なお、積層成形前のプリ
プレグのたるみを見たところ、実施例ではたるみ
がなかつたが、比較例ではたるみが見られた。 After each of the obtained laminates was etched, the laminates were heated at 170° C. for 1 hour and warpage and twist were measured. In addition, when looking at the sag of the prepreg before lamination molding, there was no sagging in the examples, but sagging was observed in the comparative examples.
上記測定の結果、反りおよびねじれは、実施例
が１mm、比較例が６mmであつた。この結果から、
この発明にかかる積層板の製法は、反りおよびね
じれの極めて小さな積層板を得ることができると
言うことがわかる。 As a result of the above measurements, the warpage and twist were 1 mm in the example and 6 mm in the comparative example. from this result,
It can be seen that the method for producing a laminate according to the present invention makes it possible to obtain a laminate with extremely small warpage and twist.
この発明にかかる積層板の製法は、前記実施例
に限定されない。 The method for manufacturing a laminate according to the present invention is not limited to the above embodiments.
以上に説明してきたように、この発明にかかる
積層板の製法は、帯状のプリプレグ１枚以上を含
む複数枚の帯状材料を連続的に積層成形する工程
を含む積層板の製法において、前記積層成形前に
一旦、前記帯状のプリプレグをテンシヨンを加え
た状態で加熱溶融させることを特徴としているた
め、得られる積層板の反りおよびねじれを極めて
小さくすることができる。
As explained above, the method for manufacturing a laminate according to the present invention includes the step of continuously laminating and forming a plurality of strips of material including one or more strips of prepreg. Since the band-shaped prepreg is first heated and melted under tension, warping and twisting of the resulting laminate can be extremely minimized.
第１図はこの発明にかかる積層板の製法の一実
施例をあらわす説明図、第２図は従来の積層板の
製法の要部をあらわす説明図である。
１……帯状のプリプレグ、３……テンシヨンロ
ール、４……加熱装置、５……帯状の金属箔、６
……ダブルベルトプレス、１０……積層板。
FIG. 1 is an explanatory diagram showing an embodiment of the method for manufacturing a laminate according to the present invention, and FIG. 2 is an explanatory diagram showing the main part of a conventional method for manufacturing a laminate. 1... Band-shaped prepreg, 3... Tension roll, 4... Heating device, 5... Band-shaped metal foil, 6
...Double belt press, 10...Laminated board.
Claims (1)
状材料を連続的に積層成形する工程を含む積層板
の製法において、前記積層成形前に一旦、前記帯
状のプリプレグをテンシヨンを加えた状態で加熱
溶融させることを特徴とする積層板の製法。1. In a method for manufacturing a laminate that includes a step of continuously laminating and molding a plurality of strip-shaped materials including one or more strip-shaped prepregs, the strip-shaped prepreg is once heated and melted under tension before the lamination molding. A method for producing a laminate, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61246118A JPS6398434A (en) | 1986-10-15 | 1986-10-15 | Manufacture of laminated sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61246118A JPS6398434A (en) | 1986-10-15 | 1986-10-15 | Manufacture of laminated sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6398434A JPS6398434A (en) | 1988-04-28 |
| JPH0423888B2 true JPH0423888B2 (en) | 1992-04-23 |
Family
ID=17143749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61246118A Granted JPS6398434A (en) | 1986-10-15 | 1986-10-15 | Manufacture of laminated sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6398434A (en) |
-
1986
- 1986-10-15 JP JP61246118A patent/JPS6398434A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6398434A (en) | 1988-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4670080A (en) | Process and apparatus for producing metal-laminated base material for printed circuit boards | |
| EP0470584A2 (en) | Continuous production of metal clad laminates | |
| WO2020066792A1 (en) | Method of manufacturing laminated plate, method of manufacturing printed circuit board, and device for manufacturing laminated plate | |
| JPH0423888B2 (en) | ||
| JPS6058031B2 (en) | Continuous manufacturing method for laminates | |
| KR890003571B1 (en) | Manufacturing process of orientated fiber reinforced | |
| JPH01221244A (en) | Manufacture of copper-clad laminated sheet | |
| JPH028896B2 (en) | ||
| JP2688160B2 (en) | Method and apparatus for producing thermoplastic nonwoven fabric and thermoplastic nonwoven fabric | |
| JPH0567415B2 (en) | ||
| JPH04348936A (en) | Manufacture of laminated sheet | |
| JPH04101845A (en) | Manufacture of laminated sheet | |
| SU1414333A3 (en) | Apparatus for making circuit boards of laminated materials | |
| JP2708914B2 (en) | Manufacturing method of laminated board | |
| JPS6398433A (en) | Manufacture of laminated sheet | |
| JP2500398B2 (en) | Metal foil-clad laminate and method for manufacturing the same | |
| JPH0542555A (en) | Continuous production of laminated sheet | |
| KR100190242B1 (en) | Wrapping method of the prepreg tape | |
| JPH0365269B2 (en) | ||
| JPS63283948A (en) | Preparation of laminated sheet | |
| JPH03110159A (en) | Production of laminated sheet | |
| JPH0263816A (en) | Manufacture of laminated sheet | |
| JPH05335739A (en) | Manufacture of multilayer printed wiring board | |
| JPH028581B2 (en) | ||
| JPS5814745A (en) | Manufacture of laminated board |