JP2582401Y2 - Film deposition equipment - Google Patents
Film deposition equipmentInfo
- Publication number
- JP2582401Y2 JP2582401Y2 JP1993014110U JP1411093U JP2582401Y2 JP 2582401 Y2 JP2582401 Y2 JP 2582401Y2 JP 1993014110 U JP1993014110 U JP 1993014110U JP 1411093 U JP1411093 U JP 1411093U JP 2582401 Y2 JP2582401 Y2 JP 2582401Y2
- Authority
- JP
- Japan
- Prior art keywords
- film
- cooling roll
- temperature
- suction
- die
- 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
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は合成樹脂フィルムの製造
に用いられるフィルム成膜装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film forming apparatus used for manufacturing a synthetic resin film.
【０００２】従来、溶融した熱可塑性合成樹脂をＴダイ
より押し出し、これを冷却ロールに接触させて固化させ
る、いわゆるＴダイ成膜法が知られている。この冷却ロ
ールへの定着を安定化し、品質の安定化とともに高速成
膜化を図るために、Ｔダイより押し出された溶融フィル
ムの背面側に、Ｔダイ面長方向に伸びる幅広のスリット
を有するガス吸引手段を設け、溶融フィルムの冷却ロー
ルへの密着性を向上させる方法が行われている（特公昭
４０ー１７９０７号、特公昭４１ー１３６２６号及び特
開平２ー５２７２１号参照）。Conventionally, there is known a so-called T-die film forming method in which a molten thermoplastic synthetic resin is extruded from a T-die and is brought into contact with a cooling roll to be solidified. In order to stabilize the fixation to the cooling roll, stabilize quality and achieve high-speed film formation, a gas with a wide slit extending in the T-die surface length direction is provided on the back side of the molten film extruded from the T-die. There is a method in which a suction means is provided to improve the adhesion of the molten film to a cooling roll (see Japanese Patent Publication No. 40-17907, Japanese Patent Publication No. 41-13626, and Japanese Patent Application Laid-Open No. 2-52721).
【０００３】しかし、これらの方法でフィルムを生産す
る場合、外気の変動や押し出しに僅かな変動があると、
ガス吸引力が一定であるので、フィルムの冷却にバラツ
キを生じて品質が不安定となり、また高速成膜化を困難
にしている。すなわち冷却ロールでのフィルム冷却が安
定しないと、フィルムの光学的特性、厚さ等の諸特性に
バラツキを生ずるだけでなく、フィルムが波打ちしやす
くなり高速成膜を阻害することになる。However, when a film is produced by these methods, if there is a slight change in the outside air or a small change in the extrusion,
Since the gas suction force is constant, the quality of the film becomes unstable due to uneven cooling of the film, and it is difficult to form a film at high speed. That is, if the cooling of the film by the cooling roll is not stable, not only does the film have various characteristics such as optical characteristics and thickness, but also the film tends to undulate, which hinders high-speed film formation.
【０００４】本考案は、これら従来の方法の欠点を改善
し品質を向上させ、かつ高速成膜化を可能とするフィル
ムの成膜装置を提供するものである。本考案は、Ｔダイ
の前方に冷却ロールと吸引ブロアーに接続したガス吸引
口を設けたＴダイ成膜装置において、冷却ロールの軸方
向に沿って設けた複数の温度センサーにより測定したフ
ィルム温度に基づいて、冷却ロールの軸方向に沿って温
度センサーと対をなして設けた、複数のガス吸引配管に
吸引ブロアーの吸引力を制御する弁を備えたことを特徴
とする、特に押出し成形に適したフィルム成膜装置を提
供するものである。The present invention is to provide a film forming apparatus capable of improving the quality of the conventional method, improving the quality, and enabling high-speed film formation. The present invention relates to a T-die film forming apparatus provided with a gas suction port connected to a cooling roll and a suction blower in front of the T-die, and detects a film temperature measured by a plurality of temperature sensors provided along an axial direction of the cooling roll. A plurality of gas suction pipes provided with a valve for controlling the suction force of a suction blower provided in pairs with a temperature sensor along the axial direction of the cooling roll, particularly suitable for extrusion molding. And a film forming apparatus.
【０００５】以下、本考案のフィルム成膜装置について
代表的実施態様を示した図により詳細に説明する。押し
出し機（図示せず）で溶融された合成樹脂は図１に示す
ようにＴダイ１によりフィルム状に押し出され、これに
接近して設けられた冷却ロール２上に導かれる。この際
フィルム３の冷却ロール２への定着はガス吸引口４から
のガス吸引により生じる負圧により制御される。冷却ロ
ール２とガス吸引口４との間には冷却ロール２に接して
フェルト５を設け、更にＴダイ１とガス吸引口４との間
には、シリコーンゴム６を用いて隙間をふさぎ、外気の
侵入を遮断することで吸引能力を向上させる。ガス吸引
口４と吸引ブロアー８とはガス吸引配管７で接続されて
いる。ガス吸引配管７にはブロアー８の吸引力を調節す
るための弁１１が取りつけられている。この弁はモータ
ーにより開閉される。フィルム３の温度は冷却ロール２
の軸方向に沿って、これに接近して設けられた温度セン
サー９により測定され、フィルム３の温度変化に応じて
制御装置１０によって温度センサー９と対をなす弁１１
を調節して吸引ブロアー８の吸引力を変化させて絶えず
フィルム３の温度を一定に保つ。外気などの影響を受け
てフィルム温度が低下し、そのフィルム温度を温度セン
サーにより検知すると、モーターを回転させて温度セン
サーと対をなす弁の開度を下げて、吸引力を低下させ
る。吸引力低下によりフィルムの冷却ロールへの密着力
が低下して、フィルム温度は上昇して、一定の温度にな
る。フィルム温度が上昇した場合は、上記の逆となる。
そして、これらの弁の開閉は、それぞれ個々に作動する
ので、フィルムの幅方向における温度変化にすぐ対応す
ることができる。Hereinafter, the film forming apparatus of the present invention will be described in detail with reference to the drawings showing typical embodiments. The synthetic resin melted by an extruder (not shown) is extruded into a film by a T-die 1 as shown in FIG. 1, and is guided onto a cooling roll 2 provided close to the extruder. At this time, fixing of the film 3 to the cooling roll 2 is controlled by a negative pressure generated by gas suction from the gas suction port 4. A felt 5 is provided between the cooling roll 2 and the gas suction port 4 in contact with the cooling roll 2, and a gap between the T-die 1 and the gas suction port 4 is closed by using silicone rubber 6. The suction ability is improved by blocking the intrusion of air. The gas suction port 4 and the suction blower 8 are connected by a gas suction pipe 7. A valve 11 for adjusting the suction force of the blower 8 is attached to the gas suction pipe 7. This valve is opened and closed by a motor. The temperature of the film 3 is set to the cooling roll 2
Is measured by a temperature sensor 9 provided in close proximity to the axis of the film 3 and a valve 11 which is paired with the temperature sensor 9 by the control device 10 according to a change in the temperature of the film 3.
Is adjusted to change the suction force of the suction blower 8 to keep the temperature of the film 3 constant. When the film temperature decreases under the influence of the outside air and the temperature of the film is detected by the temperature sensor, the motor is rotated to lower the opening of the valve paired with the temperature sensor, thereby reducing the suction force. Due to the decrease in the suction force, the adhesion of the film to the cooling roll is reduced, and the film temperature rises to a constant temperature. When the film temperature increases, the above is reversed.
Since the opening and closing of these valves are individually operated, it is possible to immediately respond to a temperature change in the film width direction.
【０００６】ガス吸引口４（ガス吸引配管７）と温度セ
ンサー９の数は冷却ロール２の軸方向の長さと吸引ブロ
アー８の吸引力の均一化の要求度により決定される。冷
却ロール２の軸方向に沿って配置された複数の温度セン
サー９によって測定されたフィルム３の各位置の温度変
化に応じて制御装置１０により各々の弁１１を調節して
フィルム３の温度を一定に保つ。温度センサーは均一な
間隔で配置されているのが好ましい。The number of the gas suction ports 4 (gas suction pipes 7) and the number of temperature sensors 9 are determined by the axial length of the cooling roll 2 and the required level of uniform suction force of the suction blower 8. The temperature of the film 3 is kept constant by adjusting each valve 11 by the control device 10 in accordance with the temperature change of each position of the film 3 measured by the plurality of temperature sensors 9 arranged along the axial direction of the cooling roll 2. To keep. The temperature sensors are preferably arranged at uniform intervals.
【０００７】[0007]
【実施例】以下、本考案の実施例について説明するが、
本考案はこれのみにに限定されるものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
The present invention is not limited to this.
【０００８】ポリ塩化ビニル樹脂１００重量部に対し可
塑剤ＤＩＮＡ（ジイソノニルアジペート）５０重量部、
エポキシ化大豆油１０重量部、Ｃa −Ｚn 系安定剤２重
量部からなる軟質塩化ビニル樹脂を、図１に示した装置
で成膜した。面長２５００ｍｍのＴダイより２００℃で
シート状に押し出し、この状態のフィルムをガス吸引口
により生じる負圧力により、内部が４０℃の水で冷却さ
れていて、表面速度が１６０ｍ／分で回転している直径
３５０ｍｍの冷却ロール上に導いて、冷却固化した後、
更に数本の冷却ロールを経て巻き取り機で巻き取った。[0008] 50 parts by weight of plasticizer DINA (diisononyl adipate) per 100 parts by weight of polyvinyl chloride resin
10 parts by weight of epoxidized soybean oil, a C a -Z n system consisting stabilizer 2 parts by weight soft vinyl chloride resin was formed in the apparatus shown in FIG. The film in this state was extruded into a sheet form at a temperature of 200 ° C. from a T-die having a surface length of 2500 mm. After being guided on a cooling roll with a diameter of 350 mm and cooled and solidified,
Further, the film was wound by a winder after passing through several cooling rolls.
【０００９】ここで、ガス吸引口はガス吸引配管により
吸引ブロアーに接続され、フィルム温度の変化に応じ
て、制御装置が弁を介して吸引ブロアーの吸引力を調節
して、常にフィルム温度を一定に保った。またフィルム
は冷却ロールに安定して定着し長時間安定した連続運転
が可能であった。なお、温度センサーにより測定された
フィルム温度は、従来の技術による方法では１００±８
℃であったが、本考案の装置によれば１００±４℃でバ
ラツキは減少した。フィルムの光沢度については従来の
技術による方法では１５０±５％であったものが本考案
の装置により製造したフィルムでは１５０±３％に改善
された。また成膜速度についても、冷却ロールの表面速
度は従来の技術による方法で１４０ｍ／分であったもの
が本考案の装置によれば１６０ｍ／分とすることができ
た。Here, the gas suction port is connected to a suction blower by a gas suction pipe, and the control device adjusts the suction force of the suction blower via a valve in accordance with a change in the film temperature, so that the film temperature is always kept constant. Kept. Further, the film was stably fixed on the cooling roll and stable continuous operation for a long time was possible. In addition, the film temperature measured by the temperature sensor is 100 ± 8 by the method according to the related art.
C., but the variation was reduced at 100 ± 4 ° C. according to the apparatus of the present invention. The glossiness of the film was 150 ± 5% in the method according to the prior art, but was improved to 150 ± 3% in the film produced by the apparatus of the present invention. Regarding the film forming speed, the surface speed of the cooling roll was 140 m / min according to the method according to the related art, but could be 160 m / min according to the apparatus of the present invention.
【００１０】[0010]
【考案の効果】本考案の装置によれば、フィルムの冷却
温度が安定し、且つフィルム温度が一定になりその結
果、フィルムの光学的特性及び厚さ等のバラツキが低減
され、長時間安定した高速成膜が可能となった。According to the device of the present invention, the cooling temperature of the film is stable and the film temperature is constant, and as a result, variations in the optical characteristics and thickness of the film are reduced, and the film is stable for a long time. High-speed film formation became possible.
【図１】本考案の装置の正面説明図である。FIG. 1 is an explanatory front view of the device of the present invention.
【図２】本考案の装置の平面説明図である。FIG. 2 is an explanatory plan view of the device of the present invention.
１・・・・Ｔダイ、 ２・・・・冷却ロール、３
・・・・フィルム、 ４・・・・ガス吸引口、５・・・
・フェルト、 ６・・・・シリコーンゴム、７・・
・・ガス吸引配管、 ８・・・・吸引ブロアー、９・・・
・温度センサー、 １０・・制御装置、１１・・弁。1 ... T die, 2 ... Cooling roll, 3
.... Film, 4 ... Gas suction port, 5 ...
・ Felt, 6 ・ ・ ・ Silicone rubber, 7 ・ ・
..Gas suction piping, 8 ... Suction blower, 9 ...
・ Temperature sensor, 10 ・ ・ Control device, 11 ・ ・ ・ Valve.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−52721（ＪＰ，Ａ) 特開 昭62−183324（ＪＰ，Ａ) 特開 昭54−11967（ＪＰ，Ａ) 実開 平４−115635（ＪＰ，Ｕ) 実開 平４−54830（ＪＰ，Ｕ) 実開 昭62−170213（ＪＰ，Ｕ) 実開 平４−30921（ＪＰ，Ｕ) 実開 平４−7125（ＪＰ，Ｕ) 特公 昭41−13626（ＪＰ，Ｂ１) 特公 昭40−17907（ＪＰ，Ｂ１) 特公 昭48−36413（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 47/00 - 47/96──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-52721 (JP, A) JP-A-62-183324 (JP, A) JP-A-54-11967 (JP, A) 115635 (JP, U) JP 4-54830 (JP, U) JP-A 62-170213 (JP, U) JP 4-30921 (JP, U) JP 4-7125 (JP, U) JP-B-41-13626 (JP, B1) JP-B-40-17907 (JP, B1) JP-B 48-36413 (JP, B1) (58) Fields investigated (Int. Cl. 6 , DB name) B29C 47/00-47/96
Claims (1)
に接続したガス吸引口を設けたＴダイ成膜装置におい
て、冷却ロールの軸方向に沿って設けた複数の温度セン
サーにより測定したフィルム温度に基づいて、冷却ロー
ルの軸方向に沿つて温度センサーと対をなして設けた、
複数のガス吸引配管に吸引ブロアーの吸引力を制御する
弁を備えたことを特徴とするフィルム成膜装置。In a T-die film forming apparatus having a cooling roll and a gas suction port connected to a suction blower in front of a T-die, a film temperature measured by a plurality of temperature sensors provided along an axial direction of the cooling roll. Based on, provided along with the temperature sensor along the axial direction of the cooling roll,
A film forming apparatus comprising: a plurality of gas suction pipes each provided with a valve for controlling a suction force of a suction blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993014110U JP2582401Y2 (en) | 1993-03-25 | 1993-03-25 | Film deposition equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993014110U JP2582401Y2 (en) | 1993-03-25 | 1993-03-25 | Film deposition equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0671116U JPH0671116U (en) | 1994-10-04 |
| JP2582401Y2 true JP2582401Y2 (en) | 1998-10-08 |
Family
ID=11851984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993014110U Expired - Lifetime JP2582401Y2 (en) | 1993-03-25 | 1993-03-25 | Film deposition equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582401Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206657A (en) * | 2015-02-04 | 2017-09-26 | 东丽株式会社 | Sheet production apparatus and sheet manufacturing method |
-
1993
- 1993-03-25 JP JP1993014110U patent/JP2582401Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0671116U (en) | 1994-10-04 |
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