JPH01101142A - Method for correcting curl of rigid vinyl chloride resin sheet - Google Patents
Method for correcting curl of rigid vinyl chloride resin sheetInfo
- Publication number
- JPH01101142A JPH01101142A JP26020887A JP26020887A JPH01101142A JP H01101142 A JPH01101142 A JP H01101142A JP 26020887 A JP26020887 A JP 26020887A JP 26020887 A JP26020887 A JP 26020887A JP H01101142 A JPH01101142 A JP H01101142A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- hot water
- roll
- vinyl chloride
- chloride resin
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 239000011347 resin Substances 0.000 title claims abstract description 8
- 229920005989 resin Polymers 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、長尺のシートからなる巻物等であって、カー
ル性を有する硬質塩化ビニル樹脂シートを連続して容易
に矯正することができるカール矯正法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention is a roll or the like consisting of a long sheet, which can easily straighten a hard vinyl chloride resin sheet having curling properties in a continuous manner. Regarding curl correction method.
（従来の技術およびその問題点）
硬質塩化ビニル樹脂シートからなる平坦なシートを用い
て打抜き加工により、各種形状の平板、例えばコンデン
サーの大部に設けられる円形の天板等を製造することが
なされている。(Prior art and its problems) It has been possible to manufacture flat plates of various shapes, such as a circular top plate provided in a large part of a capacitor, by punching a flat sheet made of a hard vinyl chloride resin sheet. ing.
このような打抜き加工において打抜き装置へ長尺シート
を巻取ってなる巻物（ロール）からシートを巻出して供
給する場合、巻物の巻径が小さくなるに従って巻ぐせに
よるシートのカールが大きくなる傾向がある。このよう
なカールを少なくする手段として、巻芯の外径を大きく
する方法があるがシートの材質や保管状態によってはカ
ールを完全に無くすことはできなかった。In such a punching process, when a sheet is unwound from a roll made by winding a long sheet and fed to a punching device, the curl of the sheet due to curling tends to increase as the diameter of the roll becomes smaller. be. As a means to reduce such curling, there is a method of increasing the outer diameter of the winding core, but depending on the sheet material and storage conditions, curling cannot be completely eliminated.
また他の方法として、巻物のシートを使用せず平坦なカ
ットシートを使用する方法があるが、作業上非能率的で
あることや、カットシートの端部で製品が部分的に切断
される場合があり、その部分の製品がロスになるという
問題があった。Another method is to use a flat cut sheet instead of a rolled sheet, but this method is inefficient and may cause the product to be partially cut at the edge of the cut sheet. There was a problem that the product in that part was wasted.
〈問題点を解決するための手段）
本発明は、カールを生じた巻物のシートであっても、容
易にそのカールを矯正できる方法、を見出したものであ
って、要旨とするところは、連続して走行する硬質塩化
ビニル樹脂シートを、当該シートのクラツシュベルグ柔
軟温度以上に加熱した温水中に浸漬後、水分を除去し冷
却するとともに、少なくとも冷却時、シートに張力を均
一に付加させながら引取ることを特徴とする硬質塩化ビ
ニル樹脂シートのカール矯正法にある。<Means for Solving the Problems> The present invention has discovered a method by which curls can be easily corrected even in curled rolled sheets. After immersing a hard vinyl chloride resin sheet that travels in hot water heated to a temperature higher than the Kratschberg flexibility temperature of the sheet, water is removed and the sheet is cooled, and at least during cooling, tension is uniformly applied to the sheet. A curl straightening method for a hard vinyl chloride resin sheet is provided.
以下、本発明を図面により詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第１図は本発明方法に使用する装置の一例を示す断面概
略図である。FIG. 1 is a schematic cross-sectional view showing an example of an apparatus used in the method of the present invention.
巻芯に巻取られた巻物１１から巻出されたシート１は第
１図に示されたシートパスにより連続して走行される。The sheet 1 unwound from the roll 11 wound around the core is continuously run along the sheet path shown in FIG.
まずシートはブレーキロール２でニップされた後、温水
槽７の温水８中に浸漬され、矯正用ロール群３間を通過
する。矯正用ロールの個数や配置は適宜法めることがで
きるが、第１図に示すようにカールの方向に対し逆方向
へ一回以上曲げるように配置すればカールの矯正効果が
大きく好ましい。First, the sheet is nipped by brake rolls 2, then immersed in hot water 8 in a hot water tank 7, and passed between a group of straightening rolls 3. Although the number and arrangement of the straightening rolls can be determined as appropriate, it is preferable that the straightening rolls be arranged so as to bend at least once in the opposite direction to the curling direction, as shown in FIG.
温水槽の温水の温度はシート１のクラツシュベルグ柔軟
温度（ＪＩＳＫ−６７３４による）以上とする必要があ
り、この温度未満ではシートのカール矯正効果を生じな
い。また温水温度が沸点に近くなると揮散する温水が増
加するなめ、揮散した温水の回収を適宜図る必要がある
。The temperature of the hot water in the hot water tank needs to be equal to or higher than the Kratschberg softness temperature (according to JISK-6734) of the sheet 1, and below this temperature the sheet will not have a curl straightening effect. Furthermore, as the hot water temperature approaches the boiling point, the amount of hot water that volatilizes increases, so it is necessary to recover the volatilized hot water as appropriate.
浸漬されたシートは温水面から出て、ゴムロール等から
なる水切りロール４でシート表面上に付着した水分が除
去される。ついで水切りロール４以降に設けたガイドロ
ール５との間でシートは自然乾燥や、熱風又は冷風によ
る強制的な冷却、乾燥がなされる。冷却、乾燥後のシー
トは引取りロール６により次工程へ移送される。The immersed sheet emerges from the surface of the hot water, and water adhering to the surface of the sheet is removed by a drain roll 4 made of a rubber roll or the like. Next, the sheet is dried naturally between the guide roll 5 provided after the draining roll 4, or forcedly cooled and dried with hot or cold air. After cooling and drying, the sheet is transferred to the next process by a take-up roll 6.
本発明では、少なくとも冷却時、シートに均一に張力を
付加させながらシートを引取る必要があり、上記水切り
ロール４と引取りロール間に速度差を設けて張力をかけ
ることができる。In the present invention, it is necessary to take off the sheet while uniformly applying tension to the sheet at least during cooling, and tension can be applied by providing a speed difference between the drain roll 4 and the take-up roll.
このような張力をかけることによりシートの引き伸ばし
効果が生じて、カールが矯正できる。Applying such tension creates a stretching effect on the sheet, and curls can be corrected.
さらに張力は温水槽中のシートからかけてもよく、この
場合、ブレーキロール２と引取ロール６間で速度差を設
ければよい。Further, the tension may be applied from a sheet in a hot water tank, and in this case, a speed difference may be provided between the brake roll 2 and the take-up roll 6.
（実施例）
硬質塩化ビニルシート（シート厚み０６３ｍｍ、シート
幅７０ｍｍ、クラツシュベルグ柔軟温度、６０℃）を巻
芯（外径１００ｍｍ）に３００ｍ巻取り、室温２０〜３
５℃にて１力月間保管した。上記巻物シートを使用し、
第１図に示した装置を用いて、カールの矯正を行なった
。(Example) A hard vinyl chloride sheet (sheet thickness 063 mm, sheet width 70 mm, Kratschberg flexibility temperature, 60°C) was wound for 300 m around a winding core (outer diameter 100 mm), at room temperature 20-3
It was stored at 5°C for 1 month. Using the above scroll sheet,
The curl was corrected using the apparatus shown in FIG.
温水の温度；７５℃
温水中のシート長さ７１ｍ
ブレーキロール２と
引取りロール６間の張力；ＩＫｇ／シート幅矯正用のロ
ール３ ；２本
引取り速度 ；Ｉｏｎ／分
上記の引取り条件にてカール矯正を行った結果、巻物の
外周部及び巻出し部側のシートも完全に平坦なシートが
得られ、シート幅の収縮や寸法変化、外観異状等もなく
良好であった。これに対し、上記カール矯正を行なわず
巻物として、そのまま保管したものでは、巻芯側のカー
ルが著しく、打抜き加工上問題があった。Hot water temperature: 75°C Sheet length in hot water 71 m Tension between brake roll 2 and take-off roll 6: IKg/sheet width straightening roll 3; 2-roll take-up speed: Ion/min Under the above take-up conditions As a result of the curl correction, a completely flat sheet was obtained on the outer periphery of the roll and on the unwinding part side, and the sheet was in good condition with no shrinkage in width, no dimensional change, no abnormality in appearance, etc. On the other hand, when the rolls were stored without being subjected to the above-mentioned curl correction, curling on the core side was significant and there were problems in punching.
（発明の効果）
本発明の方法によれば、特定温度の温水を使用すること
により、温風等と異なりシートへの均一な加熱が可能で
ありカールの矯正が正確にでき、またシートに付着した
塵芥等を容易に取り除くことができるという利点を有す
るものである。(Effects of the Invention) According to the method of the present invention, by using hot water at a specific temperature, it is possible to uniformly heat the sheet, unlike hot air, etc., and it is possible to accurately straighten curls, and also to This has the advantage that it is possible to easily remove dust, etc.
第１図は本発明に使用する装置の一例を示す断面概略図
である。
１・・・・・・硬質塩化ビニルシートFIG. 1 is a schematic cross-sectional view showing an example of a device used in the present invention. 1...Hard vinyl chloride sheet
Claims (1)
ートのクラッシュベルグ柔軟温度以上に加熱した温水中
に浸漬後、水分を除去し冷却するとともに、少なくとも
冷却時、シートに張力を均一に付加させながら引取るこ
とを特徴とする硬質塩化ビニル樹脂シートのカール矯正
法。A continuously running hard vinyl chloride resin sheet is immersed in hot water heated to a temperature higher than the Crushberg flexibility temperature of the sheet, then water is removed and cooled, and at least during cooling, tension is uniformly applied to the sheet. A method for straightening the curl of a hard vinyl chloride resin sheet, which is characterized by pulling the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26020887A JPH07119065B2 (en) | 1987-10-15 | 1987-10-15 | Curling method for hard vinyl chloride resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26020887A JPH07119065B2 (en) | 1987-10-15 | 1987-10-15 | Curling method for hard vinyl chloride resin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01101142A true JPH01101142A (en) | 1989-04-19 |
| JPH07119065B2 JPH07119065B2 (en) | 1995-12-20 |
Family
ID=17344843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26020887A Expired - Fee Related JPH07119065B2 (en) | 1987-10-15 | 1987-10-15 | Curling method for hard vinyl chloride resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119065B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003820A2 (en) | 2007-06-30 | 2009-01-08 | Robert Bosch Gmbh | Rotor support of an electric machine |
-
1987
- 1987-10-15 JP JP26020887A patent/JPH07119065B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003820A2 (en) | 2007-06-30 | 2009-01-08 | Robert Bosch Gmbh | Rotor support of an electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07119065B2 (en) | 1995-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |