JPH07112704B2 - Prepreg manufacturing method - Google Patents
Prepreg manufacturing methodInfo
- Publication number
- JPH07112704B2 JPH07112704B2 JP61307543A JP30754386A JPH07112704B2 JP H07112704 B2 JPH07112704 B2 JP H07112704B2 JP 61307543 A JP61307543 A JP 61307543A JP 30754386 A JP30754386 A JP 30754386A JP H07112704 B2 JPH07112704 B2 JP H07112704B2
- Authority
- JP
- Japan
- Prior art keywords
- spiral
- roll
- pitch
- paper
- base material
- 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
Landscapes
- Coating Apparatus (AREA)
- Reinforced Plastic Materials (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、紙基材を使用するプリプレグについて、しわ
及び断紙等の不良を発生しない製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing a prepreg using a paper base material without causing defects such as wrinkles and paper breaks.
（従来の技術） 紙基材を使用するプリプレグの製造において、紙基材に
ワニスを含浸させると、紙基材は縦横何れの方向にも１
〜２％伸びる。特に横方向の伸びは、支持ロールとの接
触のために吸収されず、しわを発生して外観不良、断紙
等の不良原因となる。第４図は通常のプリプレグ製造の
説明図である。ワニス６中で回転する含浸ロール７から
支持ロール８を経て乾燥機９に送られるワニス含浸の紙
基材は、支持ロールに接触し支えられる間にしわを発生
する等の前記問題をおこす。(Prior Art) In manufacturing a prepreg using a paper base material, when the paper base material is impregnated with varnish, the paper base material becomes 1
~ 2% growth. In particular, the elongation in the lateral direction is not absorbed due to the contact with the support rolls, causing wrinkles and causing defects such as poor appearance and paper breaks. FIG. 4 is an explanatory diagram of ordinary prepreg production. The varnish-impregnated paper base material sent from the impregnating roll 7 rotating in the varnish 6 to the dryer 9 via the supporting roll 8 causes the above-mentioned problems such as wrinkling during contact with and supporting the supporting roll.
この対策としては、タイコロール、ベンドバーを使用す
るが、この方法は紙に強制的に張力を与えてしわの発生
を防止するものである。As a countermeasure for this, tycorol and a bend bar are used, but this method forcibly applies tension to the paper to prevent the occurrence of wrinkles.
（発明が解決しようとする問題点） しかし、前記従来の対策方法によっては、紙粉、紙の蛇
行が発生し、断紙がおこるという問題がある。(Problems to be Solved by the Invention) However, depending on the above-mentioned conventional countermeasures, there is a problem that paper dust and meandering of paper occur, causing a paper break.
また、紙の横方向伸び率は、中央部において1.5〜1.9
％、端部において1.8〜2.0％と異なるために、強制張力
を与える従来法では不十分である。The lateral elongation of paper is 1.5 to 1.9 at the center.
% And 1.8 to 2.0% at the ends, the conventional method of applying a forced tension is insufficient.
（問題点を解決するための手段） 前記問題点にかんがみ、研究の結果次の発明を得た。す
なわち、第３図に示す支持ロール８にらせん状に溝を切
ったロールを使用することを特徴とする。このらせん状
溝切りロールの実施例を第１図に示す。中央部より左右
対称となるように溝をらせん状に切ったロール１とし、
そのらせん２のピッチは５〜25mmが良い。(Means for Solving Problems) In view of the above problems, the following invention was obtained as a result of research. That is, it is characterized in that a roll having spiral grooves is used as the support roll 8 shown in FIG. An example of this spiral groove cutting roll is shown in FIG. Roll 1 with spiral groove cut so that it becomes symmetrical from the center,
The pitch of the spiral 2 is preferably 5 to 25 mm.
また、横方向の伸び率が中央部と端部で異なる紙基材を
使用するときは、第２図に示すように、ロール端部より
ロール全長の10〜50％に相当する長さ部分３における切
り溝のらせんピッチを中央部４のらせんピッチより大き
くする。Further, when a paper base material having different lateral elongations at the central portion and the end portion is used, as shown in FIG. The spiral pitch of the kerf at is larger than the spiral pitch of the central portion 4.
本発明の実施例として、らせん状溝のロール従断面形状
及びらせんピッチ５の関係を第３図に示す。As an embodiment of the present invention, FIG. 3 shows the relationship between the roll sub-sectional shape of the spiral groove and the spiral pitch 5.
（作用） 支持ロールにらせん状の溝を設けることによって、紙基
材との接触面積を少なくすると共に紙基材の伸びを吸収
する。また、この溝をらせん状とすることによってロー
ル中央から端部方向への伸張力が加わりしわが発生しな
い。(Operation) By providing a spiral groove in the support roll, the contact area with the paper base material is reduced and the elongation of the paper base material is absorbed. Further, by making this groove spiral, an extension force is applied from the center of the roll to the end direction, and wrinkles do not occur.
紙基材の横方向の伸び率に変化があるときは、当然のこ
としわ原因が複雑であるから、横方向端部のらせんピッ
チを中央部らせんピッチより大きくすることによって著
しい効果がある。When there is a change in the elongation rate in the lateral direction of the paper substrate, the cause of wrinkles is naturally complicated, and therefore, the spiral pitch at the lateral end is made larger than the central spiral pitch, which has a remarkable effect.
（発明の効果） 本発明によって、従来のベンドバー及びタイコロールを
使用する方法におきる欠点が現われることなく、しわ及
び断紙不良の発生が無くなった。(Effects of the Invention) According to the present invention, wrinkles and paper-breakage defects are eliminated without the drawbacks of the conventional method using a bend bar and tycorol.
第１図は本発明のらせん状溝切り支持ロールの側面図、
第２図はらせん状溝の２段ピッチ例を示す支持ロールの
側面図、第３図はロール縦断面における溝形状とらせん
ピッチの関係を示す部分断面図、第４図はプリプレグ製
造法を説明する正面図である。 １……らせん状溝切り支持ロール、 ２……らせん、 ３……２段ピッチらせん状溝切り支持ロールの端部、 ４……２段ピッチらせん状溝切り支持ロールの中央部、 ５……らせんピッチ、６……ワニス、 ７……含浸ロール、８……支持ロール、 ９……乾燥機。FIG. 1 is a side view of a spiral groove cutting support roll of the present invention,
FIG. 2 is a side view of a supporting roll showing an example of a two-stage pitch of spiral grooves, FIG. 3 is a partial cross-sectional view showing the relationship between the groove shape and the spiral pitch in the longitudinal cross section of the roll, and FIG. 4 is an explanation of the prepreg manufacturing method. FIG. 1 ... Helical grooving support roll, 2 ... Helix, 3 ... Two-stage pitch spiral grooving support roll end, 4 ... Two-stage pitch spiral grooving support roll central part, 5 ... Spiral pitch, 6 ... Varnish, 7 ... Impregnation roll, 8 ... Support roll, 9 ... Dryer.
Claims (1)
までの支持ロールに中央部より左右対称となるように
し、端部のらせんピッチを大きく、中央部のらせんピッ
チを小さくした２段ピッチのらせん状溝切りロールを使
用することを特徴とするプリプレグの製造方法。1. A support roll before impregnating a paper base material with a varnish until it enters a dryer is made symmetrical with respect to the central portion, and has a large spiral pitch at the end portion and a small spiral pitch at the central portion. A method for producing a prepreg, characterized in that a spiral groove cutting roll having a step pitch is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61307543A JPH07112704B2 (en) | 1986-12-23 | 1986-12-23 | Prepreg manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61307543A JPH07112704B2 (en) | 1986-12-23 | 1986-12-23 | Prepreg manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63159017A JPS63159017A (en) | 1988-07-01 |
| JPH07112704B2 true JPH07112704B2 (en) | 1995-12-06 |
Family
ID=17970359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61307543A Expired - Lifetime JPH07112704B2 (en) | 1986-12-23 | 1986-12-23 | Prepreg manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07112704B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0744321B2 (en) * | 1990-11-26 | 1995-05-15 | 松下電工株式会社 | Method for manufacturing metal-clad laminate for electric use |
| JP3685125B2 (en) * | 2001-11-26 | 2005-08-17 | 松下電工株式会社 | Manufacturing method of prepreg |
| JP4836048B2 (en) * | 2005-11-30 | 2011-12-14 | 横浜ゴム株式会社 | Prepreg manufacturing method and apparatus |
| JP7291603B2 (en) * | 2018-11-08 | 2023-06-15 | ミズノ テクニクス株式会社 | Tow prepreg manufacturing equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735072A (en) * | 1980-08-08 | 1982-02-25 | Mitsubishi Gas Chemical Co | Bleaching of fiber substance |
-
1986
- 1986-12-23 JP JP61307543A patent/JPH07112704B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63159017A (en) | 1988-07-01 |
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