JPS59115824A - Controlling method of extrusion quantity of extruder - Google Patents

Controlling method of extrusion quantity of extruder

Info

Publication number
JPS59115824A
JPS59115824A JP57233679A JP23367982A JPS59115824A JP S59115824 A JPS59115824 A JP S59115824A JP 57233679 A JP57233679 A JP 57233679A JP 23367982 A JP23367982 A JP 23367982A JP S59115824 A JPS59115824 A JP S59115824A
Authority
JP
Japan
Prior art keywords
resin
extruder
filter
signal
temperature
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
Application number
JP57233679A
Other languages
Japanese (ja)
Inventor
Yukihiro Ishiguro
石黒　幸宏
Yukio Goto
後藤　幸男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP57233679A priority Critical patent/JPS59115824A/en
Publication of JPS59115824A publication Critical patent/JPS59115824A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Abstract

PURPOSE:To obtain a product of high-grade and stable quality by a method wherein resin pressure in the downstream part of a filter and resin temperature after passing through the filter are controlled to protect extraordinary rise of resin temperature and secures a fixed amount of extrusion output. CONSTITUTION:In an extrusion system of an extruder where resin melted in the extruder is extruded from a die 4 through a die gate 2, a filter 3, the temperature of melted resin between the filter 3 and the die 4 is measured by a thermometer 11, a temperature signal is supplied to a comparator 13 through a control switch 12 and compared with a signal from a temperature setter 14 to send the deviation signal to an amplifier 15. A signal from a barrel thermometer sends a control signal to a barrel heater 18 or a barrel cooler 19 and keeps the resin in the barrel at a constant temperature. In like manner, a resin pressure in the outlet of the filter 3 is measured by a pressure gage, it is compared with the set value, and the motor of the extruder is brought under control to fix the resin pressure.

Description

【発明の詳細な説明】 本発明は押出機全般に応用できる押出量制御方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an extrusion rate control method that can be applied to extruders in general.

第１図は従来の押出機に於ける押出量制御システム図で
ある。第１図に於いて押出機（１）で溶融可塑化された
溶融樹脂は、グイゲー）　（−２）　、フィルタ（、？
）を経てグイ（ゲ）へ供給される。ところがフィルタ（
３）が異物等により目詰まりすると、押出機（１）の出
口圧力Ｐ（押出提出ロ樹脂王力計（５）により検出する
）が上昇して押出量が低下するため、一定の吐出量を有
するギヤポンプ（６）をフィルタ（３）の上流に使用し
て押出量を確保すると共に、押出機（１）の出口圧力Ｐ
が一定になる様に、電動機（り）、即ちスクリュの回転
数を制御して押出量の一定化を図っていた。FIG. 1 is a diagram of an extrusion rate control system in a conventional extruder. In Fig. 1, the molten resin melted and plasticized by the extruder (1) is filtered (-2), filter (,?
) and then supplied to Gui (Ge). However, the filter (
3) is clogged with foreign matter, etc., the outlet pressure P of the extruder (1) (detected by the extruder pressure meter (5)) increases and the extrusion rate decreases, so it is necessary to maintain a constant output rate. A gear pump (6) with
The number of revolutions of the electric motor, that is, the screw, was controlled so that the amount of extrusion remained constant.

一方第２図の如く、グイ（り）から成田されたフィルム
やシート等の帯状物＜ｇ＞の厚さを計測して押出量を制
御する場合には、例えばフィルタ（３）が目詰まりして
溶融樹脂のグイ（り）への供給量が低下すると、帯状物
（ｇ）の厚さが薄くなるため、押出量が低下した分だけ
電動機（））の回転数を上げて押出量を増加させていた
。On the other hand, as shown in Fig. 2, when controlling the extrusion amount by measuring the thickness of the belt-shaped material <g> such as a film or sheet that has been narrated from a guide, for example, the filter (3) may become clogged. When the amount of molten resin supplied to the goo (g) decreases, the thickness of the strip (g) becomes thinner, so the rotation speed of the electric motor () is increased to compensate for the decrease in the amount of extrusion to increase the amount of extrusion. I was letting it happen.

しかし第１図及び第二図とも、押出量の低下した分だけ
電動機（り）の回転数を上昇させると、押出機（１）内
の樹脂湿度が上昇して、製品品質が低−下するという問
題があった。特に低粘度樹脂の場合には、フィルタ（３
）の目詰まりによる押田量成上、及び樹脂温度上昇が特
に顕著であった。However, in both Figures 1 and 2, if the rotational speed of the electric motor is increased by the amount that the extrusion amount has decreased, the resin humidity within the extruder (1) will increase and the product quality will deteriorate. There was a problem. Especially in the case of low viscosity resin, filter (3
) The increase in the amount of pressed pads due to clogging and the rise in resin temperature were particularly noticeable.

更に第１図の場合はギヤポンプ（滲、第２図）場合は製
品厚み計測器等の装置が必要となり、高コストの問題が
あった。Furthermore, in the case of FIG. 1, a gear pump (see FIG. 2) requires a device such as a product thickness measuring device, resulting in a high cost problem.

本発明は前記従来の欠点を解消するために提案されたも
ので、フィルタ下流部の樹脂圧力と樹脂圧力設定値を比
較し、その偏差信号に基づいて押出機駆動用電動機の回
転数を制御すると共に、フィルタ通過後の樹脂温度と設
定樹脂温度を比較し、その樹脂温度偏差信号に基づき押
出機バレル内の樹脂温度を制御することにより、押出量
をコントロールするようにしてコストダウンを図り、か
つ高品質の製品を得ることができる押出機の押出量制御
方法を提供せんとするものである。The present invention was proposed to solve the above-mentioned conventional drawbacks, and involves comparing the resin pressure downstream of the filter with the resin pressure set value, and controlling the rotational speed of the extruder driving electric motor based on the deviation signal. At the same time, the resin temperature after passing through the filter is compared with the set resin temperature, and the resin temperature in the extruder barrel is controlled based on the resin temperature deviation signal, thereby controlling the extrusion amount and reducing costs. It is an object of the present invention to provide a method for controlling the amount of extrusion from an extruder that can produce high-quality products.

以下本発明の実施例を図面について説明すると、第３図
は本発明の第７実施例を示す押出量制御システム図であ
り、（１）は押出機、（２）はグイゲート、（３）はフ
ィルタ・（＋りはグイ、（ｊ）は押出機川口樹脂圧力計
、（７）は電動機で、これらは第１図と同じであるので
、ここでは従来との相違点についてのみ説明することに
する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a diagram of an extrusion rate control system showing a seventh embodiment of the present invention, in which (1) is an extruder, (2) is a Guigate, and (3) is a diagram of an extrusion rate control system. Filter・(+ri is sticky), (j) is the extruder Kawaguchi resin pressure gauge, (7) is the electric motor, and since these are the same as in Figure 1, we will only explain the differences from the conventional one here. do.

図に於いて（／／）はフィルタ出口樹脂温度計で、樹脂
温度制御スイッチ（／λ〕を経て比較器（／３）へフィ
ルタ（３）の出口側に於ける樹脂温度信号を送り、樹脂
湿度設定器（／りからの設定樹脂温度と比較し、その偏
差信号を増１幅器（／Ｓ）へ送るようになっている。〔
／６〕は温度制御器で、増幅器（／Ｓ）からの偏差信号
と、バレル温度計（／））がらの信号に基づき、バレル
ヒータ（７ｇ）又はバレル冷却器（／９）へ制御信号を
送り、バレル内植側温度を一定に保つものである。In the figure, (//) is a resin thermometer at the outlet of the filter, which sends a resin temperature signal at the outlet side of the filter (3) to the comparator (/3) via the resin temperature control switch (/λ). It compares the set resin temperature from the humidity setting device (/) and sends the deviation signal to the amplifier (/S).
/6] is a temperature controller that sends a control signal to the barrel heater (7g) or barrel cooler (/9) based on the deviation signal from the amplifier (/S) and the signal from the barrel thermometer (/). , to keep the temperature on the inplant side of the barrel constant.

（２０）はフィルタ出口樹脂圧力計で、捲ｒ脂圧力制御
スイッチ（コ／〕を経て、比較器（，２λ〕へフィルタ
（３）の出口側に於ける樹脂圧力信号を送り、樹脂圧力
設定器（−３９からの設定樹脂圧力と比較し、その偏差
信号を増幅器（，２グ）へ送るようになっている。（評
）は増幅器で、前記比較器（２ユ〕からの圧力偏差信号
を増幅すると共に、速度制御器（Δ）へ速度信号を送る
ものである。また速度制御器（ユ！ｉ）は、速度検出器
（ム）からの速度信号と、前記増幅器（２１）からの速
度信号に基づき、電動機（り）へ新しい速度信号を送る
ものである。なお、符号（／、？）　（／す（／！ｉ）
　（／Ａ）　（／７）　（’／ｇ）　（／９）によつバ
レル湿度制御装置を構成し、符号（２λ）　Ｃ，２３）
　（−グ）（コ左）（コ乙〕により押出機電動機の速度
制御装置′？ｉ：Ｐｌｔ成している。(20) is a filter outlet resin pressure gauge, which sends a resin pressure signal at the outlet side of the filter (3) to the comparator (2λ) via the resin pressure control switch (ko/) to set the resin pressure. The pressure difference signal from the comparator (-39) is compared with the set resin pressure from the comparator (-39), and the deviation signal is sent to the amplifier (2 units). and sends a speed signal to the speed controller (Δ).The speed controller (Yu!i) also amplifies the speed signal from the speed detector (Mu) and the speed signal from the amplifier (21). Based on the speed signal, it sends a new speed signal to the electric motor.The symbol (/,?) (/su (/!i)
(/A) (/7) ('/g) (/9) constitutes a barrel humidity control device, code (2λ) C, 23)
(-G) (C left) (C B) The extruder motor speed control device'?i:Plt is constructed.

次に作用Ｐ説明すると、先ずフィルタ（３）が目詰まり
して押出機川口樹脂圧力Ｐが上昇し、押出量が低下し始
める。また押出量の低下によりフィルタ（３）の出口側
の樹脂圧力ＰＤも低下し、比較器（Ｌ２．２）に於いて
樹脂圧力設定器（コ３）からの設定値と比較され、その
圧力偏差信号を増幅器（評）で増幅後、速度制御器（Δ
）へ速度信号を送る。速度制御器（乃〕は速度検出器（
λ乙）からの速度信号と、前記増幅器（ａｌｌ−）から
の速度信号に基づいて電動＠（り）へ新しい速度信号を
送ることにより、電動機（７）を制御して一定押出量を
維持する。なお、樹脂用力制御スイッチ（，２／）と樹
脂温度制御スイッチ（／、２）は・運転開始時にＯＮと
なっている。Next, to explain the effect P, first, the filter (3) becomes clogged, the extruder Kawaguchi resin pressure P increases, and the extrusion amount begins to decrease. In addition, due to the decrease in the extrusion amount, the resin pressure PD on the outlet side of the filter (3) also decreases, and the comparator (L2.2) compares it with the set value from the resin pressure setting device (K3), and the pressure difference After amplifying the signal with an amplifier, the speed controller (Δ
) sends a speed signal to The speed controller (乃) is the speed detector (
The electric motor (7) is controlled to maintain a constant extrusion amount by sending a new speed signal to the electric motor (ri) based on the speed signal from the amplifier (all-) and the speed signal from the amplifier (all-). . Note that the resin power control switch (, 2/) and the resin temperature control switch (/, 2) are turned ON at the start of operation.

次に前述の押出量制御によるスクリュの回転数上昇によ
り、押出機（１）内の樹脂温度が上昇した場合には、フ
ィルタ川口樹脂温度計（／／）からの樹脂温度信号を、
樹脂温度設定器（／４７）からの設定樹脂温度と比較し
、その偏差信号を増幅器（／Ｓ）へ送る。温度制御器（
／幻は増幅器（／Ｓ）がらの信号と、バレル温度計（／
７）がらの信号に基づキ、バレルヒータ（７ｇ）　又は
バレル冷却器（／９）へ夫々信号を送り、加熱又は冷却
することによりバレル内の樹脂温度を一定に保つ。Next, when the resin temperature inside the extruder (1) rises due to the increase in the rotational speed of the screw due to the above-mentioned extrusion rate control, the resin temperature signal from the filter Kawaguchi resin thermometer (//) is
It is compared with the set resin temperature from the resin temperature setter (/47) and sends the deviation signal to the amplifier (/S). Temperature controller (
/The illusion is the signal from the amplifier (/S) and the barrel thermometer (/
7) Based on the signal from the barrel, send a signal to the barrel heater (7g) or barrel cooler (/9), respectively, and keep the resin temperature in the barrel constant by heating or cooling.

第り図は第３図と異なる実施例の２段押田機を示し、第
二段押出機（１）のスクリュ回転数を一定にセットし、
第１段押出機（／ａ）の出口圧力Ｐ。Fig. 3 shows a two-stage extruder of a different embodiment from Fig. 3, in which the screw rotation speed of the second-stage extruder (1) is set constant,
Outlet pressure P of the first stage extruder (/a).

が一定Ｖ−なるように同第１段押出機（／ａ）の電動機
（７ａ）の回転数を制御して、押出量の一定化を図って
いる。フィルタ（３）が目詰まりすると、第二段押出機
（））の出口圧力Ｐ２が上昇して押出量が低下する。よ
って製品厚みより押出量を計測し、押出量が低下した分
だけ第一段押出機（１）の電動機（７）の回転数を上昇
させて押出量の一定化を図つている。The number of revolutions of the electric motor (7a) of the first stage extruder (/a) is controlled so that the extrusion rate is constant V-, thereby making the extrusion amount constant. When the filter (3) is clogged, the outlet pressure P2 of the second stage extruder () increases and the extrusion amount decreases. Therefore, the extrusion rate is measured based on the thickness of the product, and the rotational speed of the electric motor (7) of the first stage extruder (1) is increased by the amount that the extrusion rate has decreased, thereby making the extrusion rate constant.

第Ｓ図Ｇま第７図のａ段押出機を第３図の押出機に代え
て配設した場合を示すが、作用効果は第３図の実施例と
差異はない。Figures S and G show the case where the a-stage extruder of Figure 7 is installed in place of the extruder of Figure 3, but the operation and effect are the same as the embodiment of Figure 3.

以上詳細に説明した如く本発明は構成されているので、
フィルタ目詰まりによる押出量低下を、押出機電動機の
速度制御装置によりカバーして所定の押出量をキープす
ると共に、バレル温度制御装置によりバレル内樹脂湿度
を一定に維持することにより、高品質の製品を得ること
が可能となり、かつ高価なギヤポンプや製品厚み計測器
等の装置が不要となり、コストダウンとなる。Since the present invention is configured as explained in detail above,
The speed control device of the extruder motor compensates for the decrease in extrusion rate due to filter clogging and maintains the specified extrusion rate, and the barrel temperature control device maintains the resin humidity inside the barrel at a constant level, resulting in high quality products. This also eliminates the need for expensive equipment such as gear pumps and product thickness measuring instruments, leading to cost reductions.

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第一回は夫々従来の押出機に於ける押出量制
御システム図、第３図、第７図及び第Ｓ図は夫々本発明
の実施例を示す押出機の押出量制御システム図である。 図の主要部分の説明 ハ・・押出機３・・・フィルタ　　ダ・・・ダイＳ・・
・押出機出口樹脂圧力計　　　７・・・電動機ｌ／・・
・フィルタ出口樹脂温度計　７３・・・比較器ｌダ・・
・樹脂温度設定器　　　　ｌＳ・・・増幅器／Ａ・・・
温度制御器　　　　　／り・・・バレル温度計／ｇ・・
・バレルヒータ　　　　／ｑ・・・バレル冷却器２０・
・・フィルタ出口樹脂圧力計　−！ン・・比較器コ３・
・・樹脂圧力設定器　　　　λヶ・・・増幅器：ｌＳ・
・・速度制御器　　　　　　コ乙・・・速度検出器特許
ａｌ願人　　三菱重工業株式会社Figures 1 and 1 are diagrams of an extrusion rate control system in a conventional extruder, respectively, and Figures 3, 7, and S are diagrams of an extrusion rate control system of an extruder showing an embodiment of the present invention, respectively. It is. Explanation of the main parts of the diagram C...Extruder 3...Filter D...Die S...
・Extruder outlet resin pressure gauge 7...Electric motor l/...
・Filter outlet resin thermometer 73...Comparator...
・Resin temperature setting device lS...Amplifier/A...
Temperature controller /ri...barrel thermometer/g...
・Barrel heater /q...Barrel cooler 20・
...Filter outlet resin pressure gauge -! N...Comparator 3...
・・Resin pressure setting device λ・・Amplifier: 1S・
...Speed controller...Speed detector patent applicant Mitsubishi Heavy Industries, Ltd.

Claims (1)

【特許請求の範囲】[Claims] フィルタ下流部の樹脂圧力と樹脂圧力設定値を比較し、
その偏差信号に基づいて押出機駆動用電動機の回転数を
制御すると共に、フィルタ通過後の樹脂温度と設定樹脂
温度を比較し、その樹脂温度偏差信号に基づき押出機バ
レル内の樹脂温度を制御することにより、押出量をコン
トロールすることを特徴とする押出機の押出量制御方法
。Compare the resin pressure downstream of the filter with the resin pressure setting value,
The rotation speed of the extruder driving electric motor is controlled based on the deviation signal, and the resin temperature after passing through the filter is compared with the set resin temperature, and the resin temperature in the extruder barrel is controlled based on the resin temperature deviation signal. A method for controlling an extrusion rate of an extruder, characterized in that the extrusion rate is controlled by:
JP57233679A 1982-12-23 1982-12-23 Controlling method of extrusion quantity of extruder Pending JPS59115824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57233679A JPS59115824A (en) 1982-12-23 1982-12-23 Controlling method of extrusion quantity of extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57233679A JPS59115824A (en) 1982-12-23 1982-12-23 Controlling method of extrusion quantity of extruder

Publications (1)

Publication Number Publication Date
JPS59115824A true JPS59115824A (en) 1984-07-04

Family

ID=16958834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57233679A Pending JPS59115824A (en) 1982-12-23 1982-12-23 Controlling method of extrusion quantity of extruder

Country Status (1)

Country Link
JP (1) JPS59115824A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61141526A (en) * 1984-12-14 1986-06-28 Showa Denko Kk Extruder
US4882105A (en) * 1987-11-09 1989-11-21 Beta Raven Inc. Method of automatically controlling an extruder
US4944903A (en) * 1986-03-07 1990-07-31 Bo Nilsson Method for regulating the working and the output of plastic material in extrusion moulding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61141526A (en) * 1984-12-14 1986-06-28 Showa Denko Kk Extruder
US4944903A (en) * 1986-03-07 1990-07-31 Bo Nilsson Method for regulating the working and the output of plastic material in extrusion moulding
US4882105A (en) * 1987-11-09 1989-11-21 Beta Raven Inc. Method of automatically controlling an extruder

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