JPH0114025B2 - - Google Patents
Info
- Publication number
- JPH0114025B2 JPH0114025B2 JP56056535A JP5653581A JPH0114025B2 JP H0114025 B2 JPH0114025 B2 JP H0114025B2 JP 56056535 A JP56056535 A JP 56056535A JP 5653581 A JP5653581 A JP 5653581A JP H0114025 B2 JPH0114025 B2 JP H0114025B2
- Authority
- JP
- Japan
- Prior art keywords
- cut
- synthetic resin
- sheets
- stacked
- prepregs
- 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
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002966 varnish Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 description 8
- 239000000123 paper Substances 0.000 description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000000109 continuous material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
本発明は、絶縁板等として用いられる合成樹脂
積層板を板厚精度良く製造する方法に関する。
合成樹脂積層板はフエノール樹脂あるいはエポ
キシ樹脂などの合成樹脂ワニスを紙や布などの連
続したシート状繊維質の基材に含浸乾燥しB状態
としたプリプレグを所定長さに切断し、その所定
枚数を積み重ねて加熱加圧し製造されている。こ
のとき使用される紙や布などのシートは連続した
もので出来ているため、プリプレグも連続したも
のを断裁して使用される。積層板の製造時にこの
プリプレグは、作業の都合上、断裁した順に積み
重ねて加熱加圧されるのが通例となつている。こ
の場合、紙や布は、製造時の抄造むらや、織りむ
らが存在するが、このむらも連続的な傾向をもつ
ているため、何枚か積重ねるときは、このむらは
製造された積層板においては増幅されて現われ
る。
本発明はこのような点に鑑みてなされたもの
で、合成樹脂ワニスを連続したシート状基材に含
浸乾燥しB状態としたプリプレグを所定長さに切
断し、その所定枚数を積み重ねて加熱加圧する合
成樹脂積層板の製造法に於て、所定長さに切断し
たプリプレグの少なくとも所定枚数の半数以上を
切断した順に従わないですなわち、連続したシー
ト状基材原反が不連続となるようにして積み重ね
ることを特徴とするものである。
たとえば、相互に積み重ねられるプリプレグに
使用した紙や布の基材がロツトを異にすることに
より、又、連続したシート状プリプレグを所定長
に切断し、切断されたプリプレグの向きを変える
ことにより前述したむらが相互に相殺され、均一
性のある積層板が得られる。原反の紙や布が連続
しない条件としては、同じ紙や布でもプリプレグ
として断裁した枚葉が少くとも積層されるプリプ
レグの50%は順不同となることが必要であり、望
ましくは紙や布のロツトが変ることが良い。
実施例
フエノール樹脂を含浸した晒クラフト紙(秤量
140g/m2)プリプレグ(樹脂量100g/m2)を連
続して1050mm×1050mmに断裁して、8枚を連続し
て積み重ね、常法により170℃、60分、圧力80
Kg/cm2の条件で積層成型し積層板を製造した。こ
れをAとする。
つぎに原反ロールを異にする晒クラフト紙(秤
量140g/m2)を用いてフエノール樹脂を含浸し
て製造したプリプレグを、それぞれ原反ロールを
異にするよう8枚選び、積み重ね、常法により
170℃、60分、圧力80Kg/cm2の条件で積層成型し
積層板を製造した。これをBとする。このAおよ
びBの積層板30枚について、板厚を測定した結果
を次表に示した。この結果から判るように積層板
Bは板厚バラツキが少く、良好なものが得られ
た。
The present invention relates to a method for manufacturing a synthetic resin laminate used as an insulating board or the like with high accuracy in board thickness. Synthetic resin laminates are made by impregnating a continuous sheet-like fibrous base material such as paper or cloth with a synthetic resin varnish such as phenolic resin or epoxy resin and drying it to a B state. Prepreg is cut into a predetermined length and a predetermined number of sheets. It is manufactured by stacking them together and applying heat and pressure. Since the sheets of paper, cloth, etc. used at this time are made of continuous material, the prepreg is also used by cutting continuous material. When manufacturing a laminate, for convenience of work, it is customary to stack the prepregs in the order in which they are cut and heat and press them. In this case, the paper or cloth has irregularities in papermaking and weaving during manufacturing, but these irregularities also tend to be continuous, so when stacking several sheets, these irregularities are It appears amplified on the board. The present invention has been made in view of these points, and involves cutting a prepreg into a predetermined length into a predetermined length by impregnating a continuous sheet-like base material with synthetic resin varnish and drying it, and then stacking a predetermined number of sheets and heating them. In the method of manufacturing a pressed synthetic resin laminate, at least half of the pre-preg sheets cut to a predetermined length are cut in the order in which they were cut, that is, the continuous sheet-like base material becomes discontinuous. It is characterized by being stacked. For example, by using different lots of paper or cloth base materials for the prepregs stacked on top of each other, or by cutting a continuous sheet of prepreg to a predetermined length and changing the orientation of the cut prepregs, The unevenness cancels out each other, resulting in a laminate with uniformity. As for the condition that the original paper or cloth is not continuous, it is necessary that at least 50% of the sheets of the same paper or cloth cut as prepreg are laminated in random order, and it is desirable that the sheets of paper or cloth are stacked in random order. It's good that the lotto changes. Example Bleached kraft paper impregnated with phenolic resin (weighed
140g/m 2 ) prepreg (resin amount 100g/m 2 ) was continuously cut to 1050mm x 1050mm, 8 sheets were stacked in succession, and heated at 170℃ for 60 minutes and at a pressure of 80℃ using the usual method.
A laminate was manufactured by lamination molding under the condition of Kg/cm 2 . Let this be A. Next, eight sheets of prepreg manufactured by impregnating phenolic resin using bleached kraft paper (weighing 140 g/m 2 ) with different raw rolls were selected, each with a different raw roll, and stacked in a conventional manner. by
A laminate plate was produced by lamination molding at 170°C for 60 minutes and at a pressure of 80 kg/cm 2 . Let this be B. The thickness of the 30 laminates A and B was measured and the results are shown in the table below. As can be seen from this result, laminate B had little variation in plate thickness and was good.
【表】
以上説明したように一般に連続的にシート状に
製造されるシート状物(紙、布、およびこれらを
用いたプリプレグ)は流れ方向に密度分布がある
傾向を有しこれを切断順に多数枚重ねた積層板
は、この傾向がさらに増幅されるが本発明に於て
は不連続の原反を用いるため、これらの密度分布
の傾向が、たがいに相殺され均一な製品が得ら
れ、板厚バラツキはもとよりそり、ねじれ、かす
れが小さくなる効果がある。
なお、板厚バラツキ小さく出来るため、従来
1.6±0.2mmという板厚のものが、本発明により1.5
±0.1mmというような材料費を節約出来るという
効果もある。[Table] As explained above, sheet-like materials (paper, cloth, and prepregs made from these materials) that are generally manufactured continuously into sheets tend to have a density distribution in the flow direction. This tendency is further amplified in stacked laminates, but since discontinuous raw material is used in the present invention, these density distribution trends cancel each other out, resulting in a uniform product. It has the effect of reducing not only thickness variations but also warping, twisting, and scratching. In addition, since the variation in plate thickness can be reduced, it is possible to
The plate thickness of 1.6±0.2mm was changed to 1.5mm by this invention.
It also has the effect of saving material costs by ±0.1mm.
Claims (1)
浸乾燥しB状態としたプリプレグを所定長さに切
断し、その所定枚数を積み重ねて加熱加圧する合
成樹脂積層板の製造法に於て、所定長さに切断し
たプリプレグの少なくとも所定枚数の半数以上を
切断した順に従わないで積み重ねることを特徴と
する合成樹脂積層板の製造法。 2 所定長さに切断したプリプレグを、隣接する
プリプレグがそれぞれ原反ロールを異にするよう
に積み重ねることを特徴とする特許請求の範囲第
1項記載の合成樹脂積層板の製造法。[Claims] 1. A method for producing a synthetic resin laminate, in which a continuous sheet-like base material is impregnated with a synthetic resin varnish, dried and prepreg brought to a B state is cut into predetermined lengths, and a predetermined number of sheets are stacked and heated and pressed. A method for producing a synthetic resin laminate, comprising stacking at least half of the predetermined number of prepregs cut to a predetermined length without following the order in which they were cut. 2. The method for producing a synthetic resin laminate according to claim 1, characterized in that prepregs cut to a predetermined length are stacked so that adjacent prepregs have different raw rolls.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056535A JPS57170750A (en) | 1981-04-14 | 1981-04-14 | Manufacture of synthetic resin laminated board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056535A JPS57170750A (en) | 1981-04-14 | 1981-04-14 | Manufacture of synthetic resin laminated board |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57170750A JPS57170750A (en) | 1982-10-21 |
JPH0114025B2 true JPH0114025B2 (en) | 1989-03-09 |
Family
ID=13029778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56056535A Granted JPS57170750A (en) | 1981-04-14 | 1981-04-14 | Manufacture of synthetic resin laminated board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57170750A (en) |
-
1981
- 1981-04-14 JP JP56056535A patent/JPS57170750A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS57170750A (en) | 1982-10-21 |
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