JPH106384A - Polymer sheet molding apparatus - Google Patents
Polymer sheet molding apparatusInfo
- Publication number
- JPH106384A JPH106384A JP8178637A JP17863796A JPH106384A JP H106384 A JPH106384 A JP H106384A JP 8178637 A JP8178637 A JP 8178637A JP 17863796 A JP17863796 A JP 17863796A JP H106384 A JPH106384 A JP H106384A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- sheet
- melt viscosity
- slit valve
- cooling drum
- 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.)
- Pending
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 39
- 238000000465 moulding Methods 0.000 title abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 239000000155 melt Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融ポリマーをス
リット弁から回転する冷却ドラム上にシート状に吐出
し、冷却固化させるポリマーシートの成形装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polymer sheet forming apparatus for discharging a molten polymer into a sheet from a slit valve onto a rotating cooling drum and cooling and solidifying the sheet.
【０００２】[0002]
【従来の技術】例えば、重合槽からポリエステルのよう
な溶融ポリマーを払い出す場合、溶融ポリマーをスリッ
ト弁から回転する冷却ドラム上にシート状に吐出し、冷
却固化してシートに成形する装置が使用されている。2. Description of the Related Art For example, when dispensing a molten polymer such as polyester from a polymerization tank, an apparatus is used in which the molten polymer is discharged from a slit valve into a sheet on a rotating cooling drum, cooled, solidified, and formed into a sheet. Have been.
【０００３】このようなシートの成形に際し、ポリマー
の溶融粘度が変化した場合、溶融ポリマーの吐出量が変
化するため、シートの張力を一定に保持することができ
ず、シート同士が融着したり、シートに厚さ斑が発生し
たりするという問題があった。When the melt viscosity of the polymer changes during the formation of such a sheet, the discharge amount of the molten polymer changes, so that the tension of the sheet cannot be kept constant, and the sheets may be fused. However, there is a problem that unevenness in thickness occurs in the sheet.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、溶融ポリマ
ーをスリット弁から回転する冷却ドラム上にシート状に
吐出し、冷却固化させるポリマーシートの成形装置にお
いて、ポリマーの溶融粘度変動よって生じる溶融ポリマ
ーの吐出量の変動、ひいてはシートの張力の変動を排除
し、安定して厚さ斑のないシートを成形することのでき
るポリマーシートの成形装置を提供しようとするもので
ある。SUMMARY OF THE INVENTION The present invention relates to a polymer sheet molding apparatus for discharging a molten polymer in a sheet form from a slit valve onto a rotating cooling drum and cooling and solidifying the molten polymer. It is an object of the present invention to provide a polymer sheet forming apparatus capable of stably forming a sheet having no thickness unevenness by eliminating the fluctuation of the discharge amount of the liquid and the fluctuation of the sheet tension.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の課題を
解決するもので、その要旨は、溶融ポリマーをスリット
弁から回転する冷却ドラム上にシート状に吐出し、冷却
固化させるポリマーシートの成形装置において、ポリマ
ーの溶融粘度を検出し、その検出値から最適なスリット
弁の開度と冷却ドラムの回転数を算出し、ポリマーの溶
融粘度の変化に連動してこれらを最適値に制御するよう
にしたことを特徴とするポリマーシートの成形装置にあ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the present invention is that a molten polymer is discharged from a slit valve onto a rotating cooling drum in a sheet form, and the polymer is cooled and solidified. In the molding equipment, the melt viscosity of the polymer is detected, and the optimal opening of the slit valve and the rotation speed of the cooling drum are calculated from the detected values, and these are controlled to the optimum values in conjunction with the change in the melt viscosity of the polymer. An apparatus for forming a polymer sheet, characterized in that:
【０００６】[0006]
【発明の実施の形態】次に、本発明の装置について、図
面を参照しながら具体的に説明する。図１は、重合槽か
ら溶融ポリマーを払い出してシートを成形する装置の一
例を示す説明である。図１において、１は重合槽、２は
スリット弁、３は吐出シート、４は冷却ドラム、５〜７
は補助冷却ドラム、８はシート引取りドラム、９は冷却
槽、10は攪拌機のモーター、11は溶融粘度計、12は制御
装置、13はカッターを示す。なお、ポリマーの種類や吐
出するシートの厚さによっては、補助冷却ドラムは必ず
しも必要ではないが、補助冷却ドラムを設けることによ
りシートの冷却を完全にすることができる。Next, the apparatus of the present invention will be specifically described with reference to the drawings. FIG. 1 is a diagram illustrating an example of an apparatus for dispensing a molten polymer from a polymerization tank to form a sheet. In FIG. 1, 1 is a polymerization tank, 2 is a slit valve, 3 is a discharge sheet, 4 is a cooling drum, 5 to 7
Denotes an auxiliary cooling drum, 8 denotes a sheet take-off drum, 9 denotes a cooling tank, 10 denotes a motor of an agitator, 11 denotes a melt viscometer, 12 denotes a control device, and 13 denotes a cutter. The auxiliary cooling drum is not necessarily required depending on the type of the polymer or the thickness of the sheet to be discharged. However, the cooling of the sheet can be completed by providing the auxiliary cooling drum.
【０００７】重合槽１からの溶融ポリマーは、スリット
弁２からシート３として第１冷却ドラム４上に吐出され
る。冷却ドラム４上に吐出されたシート３は、冷却水が
満たされた冷却槽９を通って冷却固化され、その後、補
助冷却ドラム５〜７を順次通過してシート引取りドラム
８で引き取られる。なお、この例では、引取りドラム８
で引き取られたシートは、カッター13で幅方向に切断さ
れ、コンベアで梱包機に送られる。The molten polymer from the polymerization tank 1 is discharged from the slit valve 2 as a sheet 3 onto the first cooling drum 4. The sheet 3 discharged onto the cooling drum 4 is cooled and solidified through a cooling tank 9 filled with cooling water, and then passes through the auxiliary cooling drums 5 to 7 in order and is taken up by a sheet take-up drum 8. In this example, the take-up drum 8
Is cut in the width direction by the cutter 13 and sent to a packing machine by a conveyor.
【０００８】このようにしてシートを成形する場合、ポ
リマーの溶融粘度が低下すると、スリット弁２からの吐
出量が増えてシートが厚くなる。冷却ドラム４上に吐出
されたシート３が厚くなると、冷却槽９を通っても完全
には冷却固化されず、補助冷却ドラム５〜７の間でシー
トにたるみが生じ、シート同士が融着するというトラブ
ルが発生する。逆に、ポリマーの溶融粘度が上昇する
と、スリット弁２からの吐出量が減ってシートが薄くな
る。When the sheet is formed in this manner, when the melt viscosity of the polymer decreases, the discharge amount from the slit valve 2 increases, and the sheet becomes thicker. When the sheet 3 discharged onto the cooling drum 4 becomes thicker, the sheet is not completely cooled and solidified even after passing through the cooling tank 9, and the sheet is sagged between the auxiliary cooling drums 5 to 7, and the sheets are fused together. Trouble occurs. Conversely, when the melt viscosity of the polymer increases, the discharge amount from the slit valve 2 decreases and the sheet becomes thin.
【０００９】そこで、本発明の装置は、ポリマーの溶融
粘度を検出し、その検出値から最適なスリット弁の開度
と冷却ドラムの回転数を算出し、ポリマーの溶融粘度の
変化に連動してこれらを最適値に制御するようにしたも
のである。すなわち、ポリマーの溶融粘度が低下すれ
ば、スリット弁２の開度を小さくし、冷ドラムの回転数
を大きくし、逆に、ポリマーの溶融粘度が上昇すれば、
スリット弁２の開度を大きくするのである。Therefore, the apparatus of the present invention detects the melt viscosity of the polymer, calculates the optimum opening of the slit valve and the rotation speed of the cooling drum from the detected values, and interlocks with the change in the melt viscosity of the polymer. These are controlled to optimal values. That is, if the melt viscosity of the polymer decreases, the opening degree of the slit valve 2 is reduced, the rotation speed of the cold drum is increased, and conversely, if the melt viscosity of the polymer increases,
The opening of the slit valve 2 is increased.
【００１０】具体的には、重合槽１に設けられた攪拌機
のモーター10の攪拌動力、もしくは重合槽１の底部に設
けた溶融粘度計11によってポリマーの溶融粘度を検出
し、その検出値を制御装置12に送信し、制御装置12にお
いて、溶融粘度に応じた最適なスリット弁２の開度と冷
却ドラム４及び補助冷却ドラム５〜７の回転数を算出
し、これらが最適値となるように制御指令を発するので
ある。Specifically, the melt viscosity of the polymer is detected by the stirring power of a motor 10 of a stirrer provided in the polymerization tank 1 or by a melt viscometer 11 provided at the bottom of the polymerization tank 1, and the detected value is controlled. The control device 12 calculates the optimal opening of the slit valve 2 and the rotation speed of the cooling drum 4 and the auxiliary cooling drums 5 to 7 according to the melt viscosity, and controls the calculated values so that these values become optimal values. It issues a control command.
【００１１】[0011]
【実施例】次に、実施例により本発明の効果を具体的に
説明する。Next, the effects of the present invention will be described in detail with reference to examples.
【００１２】実施例 図１に示した形式のシート成形装置を使用し、重合槽１
からの溶融粘度が2000ポイズの共重合ポリエステル2000
kgをシートに成形した。 (厚さ３mm、幅26cmのシートを
成形し、長さ45cmに切断して梱包機に送った。)吐出量
を1000kg／時、ドラムの回転数を、冷却ドラム４：0.75
rpm、補助冷却ドラム５：1.20 rpm、補助冷却ドラム６
及び７：1.40 rpmとしてシートの成形を開始し、溶融粘
度の変化に応じて、ドラムの回転数を、冷却ドラム４：
±0.10 rpm、補助冷却ドラム５〜７：±0.05 rpmの範囲
で制御した。なお、シート成形終了直前の条件等は、ポ
リマー溶融粘度が1650ポイズ、ドラムの回転数が、冷却
ドラム４：0.65 rpm、補助冷却ドラム５：1.15 rpm、補
助冷却ドラム６及び７：1.35 rpmであった。このような
シートの成形を50回実施した結果、トラブルは全く発生
しなかった。EXAMPLE A sheet forming apparatus of the type shown in FIG.
Polyester 2000 with a melt viscosity of 2000 poise
kg was formed into a sheet. (A sheet having a thickness of 3 mm and a width of 26 cm was formed, cut into a length of 45 cm, and sent to a packing machine.) The discharge amount was 1000 kg / h, and the number of rotations of the drum was cooling drum 4: 0.75.
rpm, auxiliary cooling drum 5: 1.20 rpm, auxiliary cooling drum 6
And 7: start forming the sheet at 1.40 rpm, and change the rotation speed of the drum according to the change in the melt viscosity.
The control was performed in a range of ± 0.10 rpm and auxiliary cooling drums 5 to 7: ± 0.05 rpm. The conditions immediately before the completion of the sheet molding were as follows: the melt viscosity of the polymer was 1650 poise, the rotation speed of the drum was cooling drum 4: 0.65 rpm, auxiliary cooling drum 5: 1.15 rpm, and auxiliary cooling drums 6 and 7: 1.35 rpm. Was. As a result of performing such sheet forming 50 times, no trouble occurred.
【００１３】比較例 ポリマーの溶融粘度に応じた制御を行うことなく、実施
例におけるシート成形開始時の条件でシートの成形を行
った。その結果、シートの成形50回のうち、11回にトラ
ブルが発生した。Comparative Example A sheet was formed under the conditions at the time of starting the sheet forming in the examples without controlling according to the melt viscosity of the polymer. As a result, trouble occurred in 11 out of 50 sheet forming operations.
【００１４】[0014]
【発明の効果】本発明によれば、ポリマーの溶融粘度を
検出し、その検出値に応じた最適なスリット弁の開度と
冷却ドラムの回転数に制御するので、ポリマーの溶融粘
度が変動しても、シートの張力の変動や厚さ斑が排除さ
れ、均一なシートを安定して成形することができる。According to the present invention, the melt viscosity of the polymer is detected, and the optimum opening degree of the slit valve and the number of rotations of the cooling drum are controlled in accordance with the detected value. However, fluctuations in sheet tension and uneven thickness can be eliminated, and a uniform sheet can be formed stably.
【図１】本発明の装置の一例を示す概略説明図である。FIG. 1 is a schematic explanatory view showing an example of the apparatus of the present invention.
１ 重合槽 ２ スリット弁 ３ 吐出シート ４ 冷却ドラム ５〜７ 補助冷却ドラム ８ シート引取りドラム ９ 冷却槽 10 攪拌機のモーター 11 溶融粘度計 12 制御装置 DESCRIPTION OF SYMBOLS 1 Polymerization tank 2 Slit valve 3 Discharge sheet 4 Cooling drum 5-7 Auxiliary cooling drum 8 Sheet take-up drum 9 Cooling tank 10 Motor of stirrer 11 Melt viscometer 12 Controller
Claims (1)
冷却ドラム上にシート状に吐出し、冷却固化させるポリ
マーシートの成形装置において、ポリマーの溶融粘度を
検出し、その検出値から最適なスリット弁の開度と冷却
ドラムの回転数を算出し、ポリマーの溶融粘度の変化に
連動してこれらを最適値に制御するようにしたことを特
徴とするポリマーシートの成形装置。1. A polymer sheet forming apparatus for discharging a molten polymer in a sheet form from a slit valve onto a rotating cooling drum and cooling and solidifying the molten polymer, detects a melt viscosity of the polymer, and determines an optimum slit valve from the detected value. An apparatus for forming a polymer sheet, wherein an opening degree and a rotation speed of a cooling drum are calculated, and these are controlled to optimum values in accordance with a change in melt viscosity of a polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8178637A JPH106384A (en) | 1996-06-18 | 1996-06-18 | Polymer sheet molding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8178637A JPH106384A (en) | 1996-06-18 | 1996-06-18 | Polymer sheet molding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH106384A true JPH106384A (en) | 1998-01-13 |
Family
ID=16051947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8178637A Pending JPH106384A (en) | 1996-06-18 | 1996-06-18 | Polymer sheet molding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH106384A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7818068B2 (en) | 1999-07-30 | 2010-10-19 | Boston Scientific Neuromodulation Corporation | Implantable pulse generators using rechargeable zero-volt technology lithium-ion batteries |
| US9142989B2 (en) | 2012-09-07 | 2015-09-22 | Greatbatch Ltd. | Method of minimizing interruptions to implantable medical device recharging |
| US9209634B2 (en) | 2012-09-07 | 2015-12-08 | Greatbatch Ltd. | Method of improving battery recharge efficiency by statistical analysis |
| US9225190B2 (en) | 2012-09-07 | 2015-12-29 | Manufacturers And Traders Trust Company | Implant current controlled battery charging based on temperature |
| DE102017223060A1 (en) | 2017-04-24 | 2018-10-25 | Mitsubishi Electric Corporation | Semiconductor device |
-
1996
- 1996-06-18 JP JP8178637A patent/JPH106384A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7818068B2 (en) | 1999-07-30 | 2010-10-19 | Boston Scientific Neuromodulation Corporation | Implantable pulse generators using rechargeable zero-volt technology lithium-ion batteries |
| US9142989B2 (en) | 2012-09-07 | 2015-09-22 | Greatbatch Ltd. | Method of minimizing interruptions to implantable medical device recharging |
| US9209634B2 (en) | 2012-09-07 | 2015-12-08 | Greatbatch Ltd. | Method of improving battery recharge efficiency by statistical analysis |
| US9225190B2 (en) | 2012-09-07 | 2015-12-29 | Manufacturers And Traders Trust Company | Implant current controlled battery charging based on temperature |
| DE102017223060A1 (en) | 2017-04-24 | 2018-10-25 | Mitsubishi Electric Corporation | Semiconductor device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH106384A (en) | Polymer sheet molding apparatus | |
| US5590599A (en) | Method for regulating ink distribution in a printing machine | |
| US6213367B1 (en) | Method of controlling the drive transporting a paper web in a printing machine | |
| KR102071713B1 (en) | Raw material feeder for secondary battery | |
| JPS63503217A (en) | Procedures for controlling equipment for the production of plastic articles | |
| US3952137A (en) | Method for the fabrication of a bitumenous roofing material | |
| JPH04125121A (en) | Extrusion molding method and its device | |
| JP2003225935A (en) | Injection molding machine and method for adjusting viscosity of molten resin | |
| JPS5823545A (en) | Controlling method for surface temperature of cooling roll for production of thin strip by quick cooling method for molten metal | |
| JPH03229629A (en) | Stirring reaction apparatus | |
| US2384277A (en) | Continuous process for making rubber-like materials by polymerizing elastogenic polymerizable materials | |
| JPH089083B2 (en) | Semi-solid metal slurry production equipment | |
| JP3559144B2 (en) | Substrate processing equipment | |
| JPH0723709A (en) | Method for treating butter and device therefor | |
| SU910424A1 (en) | Apparatus for automatic control of polymeric material processing in auger machines | |
| KR200222957Y1 (en) | apparatus for auto-suppling mold powder | |
| JPS6195026A (en) | Polymerization of polyamide | |
| JP2723373B2 (en) | Continuous mixing device | |
| US6642349B1 (en) | Batch type apparatus for production of liquid crystalline polymer, and method for continuous production of liquid crystalline polymer using the apparatus | |
| JPS6349347A (en) | Control method for number of revolution of twin rolls | |
| KR102647649B1 (en) | Raw material molding equipment for consistently manufacturing film-type functional products in large quantities | |
| CN213919480U (en) | Dynamic mixing extruder equipment | |
| KR100194515B1 (en) | Tension Control Method and Device of Biaxial Winding Machine | |
| JPH0819996A (en) | Rotary cutter for soft product | |
| JPH01170546A (en) | Manufacture of semi-solidified slurry |