JPH0747293B2 - Vent type different diameter two-stage extruder - Google Patents
Vent type different diameter two-stage extruderInfo
- Publication number
- JPH0747293B2 JPH0747293B2 JP61028183A JP2818386A JPH0747293B2 JP H0747293 B2 JPH0747293 B2 JP H0747293B2 JP 61028183 A JP61028183 A JP 61028183A JP 2818386 A JP2818386 A JP 2818386A JP H0747293 B2 JPH0747293 B2 JP H0747293B2
- Authority
- JP
- Japan
- Prior art keywords
- extruder
- cylinder
- vent hole
- diameter
- 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.)
- Expired - Lifetime
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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はベント式押出機であって、特に２つの押出機
を順次直列に接続した２段式の押出機に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a vent type extruder, and more particularly to a two-stage type extruder in which two extruders are sequentially connected in series.
本件出願人が市場にある公知の２段式押出機を調査した
ところ、上流側の第１押出機のシリンダ径と下流側の第
２押出機のシリンダ径とは同じであり、ガス抜きのベン
ト孔も２段式のものにおいては第１押出機の吐出口から
第２押出機の供給口に通じる連絡路の中間に設けられて
いる。When the applicant investigated a known two-stage extruder on the market, the cylinder diameter of the upstream first extruder and the cylinder diameter of the downstream second extruder were the same, and the vent vent In the case of the two-stage type, the hole is also provided in the middle of the communication path from the discharge port of the first extruder to the supply port of the second extruder.
ところが第１の押出機においてはペレットを半溶融状態
にまで加熱するものであり、第２押出機は完全に溶融混
練するものであるから当然に２つの押出機のシリンダ内
の樹脂の容積率は異なり２つの押出機の樹脂量を完全に
一致させることはむずかしく、従来は第１押出機の回転
数を変化させることによって調整している。However, in the first extruder, the pellets are heated to a semi-molten state, and in the second extruder, the pellets are completely melted and kneaded. Differently, it is difficult to completely match the resin amounts of the two extruders, and conventionally the adjustment is made by changing the rotation speed of the first extruder.
ところが、２つの押出機のシリンダ径が同一であるた
め、成形中におけるベント孔からの樹脂の溢出量の増減
に応じて、上流側の第１押出機から下流側の第２押出機
への樹脂供給量の微調整をするにはこの第１押出機のス
クリユーの回転数を例えば２分の１回転、３分の１回の
ように微妙に増減する必要が有り、上流側の第１押出機
から下流側の第２押出機への樹脂供給量を微調整するこ
とはむずかしく、また上流側の第１押出機の吐出量を多
くすると前記連絡路に設けてあるベント孔より半溶融樹
脂が溢出する量が多くなり、第２押出機への供給量の調
整を困難にしており、常に均質な溶融樹脂を下流側の第
２押出機からダイに押し出すには高度の熟練を要した。However, since the cylinder diameters of the two extruders are the same, the resin from the first extruder on the upstream side to the second extruder on the downstream side varies depending on the increase / decrease in the amount of resin overflow from the vent hole during molding. In order to finely adjust the supply amount, it is necessary to delicately increase or decrease the rotation speed of the screw of the first extruder, for example, 1/2 rotation or 1/3 rotation. It is difficult to finely adjust the amount of resin supplied to the second extruder on the downstream side, and when the discharge amount of the first extruder on the upstream side is increased, the semi-molten resin overflows from the vent hole provided in the communication path. The amount to be supplied to the second extruder is so large that it is difficult to adjust the supply amount to the second extruder, and it requires a high degree of skill to always extrude a homogeneous molten resin from the second extruder on the downstream side to the die.
この発明は上記のような公知の装置の欠点を改善し、特
に第１押出機のシリンダー径を第２押出機のシリンダー
径よりも小さくし、第１押出機の回転数の変化による第
２押出機への影響を小さくし、第２押出機への溶融樹脂
の供給量を微調整を容易にすると共に、ベント孔の位置
及び向きに工夫を加えることにより、ベント孔よりの樹
脂の溢出量を極力少なくし、第２押出機より樹脂吐出量
の安定化と、均質樹脂の押出が行えるベント式異径２段
押出装置を市場に提供することを目的とする。The present invention improves the drawbacks of the known apparatus as described above, in particular, the cylinder diameter of the first extruder is made smaller than that of the second extruder, and the second extruder is changed by changing the rotation speed of the first extruder. The influence on the machine is reduced, and the amount of molten resin supplied to the second extruder can be easily adjusted, and the amount of resin overflow from the vent hole can be reduced by devising the position and direction of the vent hole. It is an object of the present invention to provide to the market a vent type two-stage extruder having a different diameter, which can minimize the amount of resin discharged from the second extruder and can extrude a homogeneous resin.
前記課題を解決するためにこの発明は、２段式熱可塑性
樹脂押出機において、下流側の押出機の供給口に近いシ
リンダの供給部にベント孔が設けてあり、上流側の第１
押出機のシリンダ径d1と下流側の第２押出機のシリンダ
径d2の関係がd1/d2＜１としてあり、前記ベント孔は、
第２押出機のシリンダの供給口より下流側の供給部の前
記シリンダの側面であって、スクリュー軸が回転によっ
てその螺旋羽根が樹脂送り回転方向へ下降する際にこの
螺旋羽根の先端が対向するシリンダ側壁に設けてあり、
このベント孔の軸線は垂直線に対しほゞ45゜外端ほど高
く傾斜して設けてあることを特徴とするベント式異型２
段押出装置としてある。In order to solve the above-described problems, the present invention is a two-stage thermoplastic resin extruder, in which a vent hole is provided in a supply portion of a cylinder near a supply port of a downstream side extruder, and a first upstream side
The relationship between the cylinder diameter d 1 of the extruder and the cylinder diameter d 2 of the downstream second extruder is d 1 / d 2 <1, and the vent hole is
The side surface of the cylinder of the supply section on the downstream side of the supply port of the cylinder of the second extruder, and the tips of the spiral blades face each other when the screw blades descend in the resin feed rotation direction due to rotation of the screw shaft. It is provided on the cylinder side wall,
The vent-type variant 2 is characterized in that the axis of the vent hole is inclined to the vertical by approximately 45 ° toward the outer end.
It is a step extrusion device.
この発明においては、第２押出機のシリンダに半溶融状
態の樹脂が供給され、この供給された半溶融状態の樹脂
から発生するガスは、この第２押出機のシリンダの供給
部に設けられている前記ベント孔から抜かれ、樹脂は第
２押出機のシリンダ内のスクリユー軸によって、そのま
ま搬送され、更に加熱混練され均質な溶融樹脂となっ
て、第２押出機の吐出部より更にダイに送り込まれる。In the present invention, the semi-molten resin is supplied to the cylinder of the second extruder, and the gas generated from the supplied semi-molten resin is provided in the supply section of the cylinder of the second extruder. The resin is drawn out from the vent hole existing therein, and is conveyed as it is by the screw shaft in the cylinder of the second extruder, further heated and kneaded into a homogeneous molten resin, and further fed into the die from the discharge part of the second extruder. .
この第１押出機のシリンダ径と第２押出機のシリンダ径
が異なるため、第２押出機のスクリユー軸の回転は第１
押出機より約10乃至50％低速回転となって運転される。Since the cylinder diameter of the first extruder and the cylinder diameter of the second extruder are different, the rotation of the screw shaft of the second extruder is the first.
It operates at about 10 to 50% lower speed than the extruder.
この結果、上流側の第１押出機から下流側の第２押出機
への樹脂供給量を微調整する場合には、上流側の第１押
出機のスクリユーが下流側の第２押出機のスクリユーに
比べて小径であるために、この小径の上流側の第１押出
機のスクリユーの回転数を粗く増減することにより、成
形中におけるベント孔からの樹脂の溢出量の増減に応じ
て、小径の上流側の第１押出機から下流側の第２押出機
への樹脂供給量が微調整される。As a result, when finely adjusting the resin supply amount from the first extruder on the upstream side to the second extruder on the downstream side, the screw of the first extruder on the upstream side is changed to the screw of the second extruder on the downstream side. Since the diameter is smaller than that of the first extruder, the number of rotations of the screw of the first extruder on the upstream side of this small diameter is roughly increased / decreased, so that the small The resin supply amount from the first extruder on the upstream side to the second extruder on the downstream side is finely adjusted.
更に、前記ベント孔の軸線は垂直線に対しほゞ45゜外端
ほど高く傾斜して設けてあるため、重力と螺旋羽根のか
きとり作用を溶融樹脂が受けると共に、前記小径の上流
側の第１押出機のスクリユーの回転数を粗く増減するこ
とで下流側の第２押出機への樹脂供給量を微調整する相
乗作用により、前記ベント孔からの溶融樹脂の溢出量は
微量となる。Further, since the axis of the vent hole is inclined about 45 ° higher than the vertical line, the molten resin receives gravity and the scraping action of the spiral blade, and at the same time, the first diameter of the upstream side of the small diameter is increased. The amount of overflow of the molten resin from the vent hole becomes very small due to the synergistic effect of finely adjusting the resin supply amount to the second extruder on the downstream side by roughly increasing / decreasing the number of revolutions of the screw of the extruder.
この発明においては、前記第１押出機のシリンダ径が前
記第２押出機のシリンダ径よりも小さいから、小径の上
流側の第１押出機のスクリユーの回転数を粗く増減する
ことで、前記第１押出機から前記第２押出機への溶融樹
脂の供給量を容易に微調整できる。In the present invention, since the cylinder diameter of the first extruder is smaller than the cylinder diameter of the second extruder, by roughly increasing or decreasing the rotation speed of the screw of the first extruder on the upstream side having a small diameter, The amount of molten resin supplied from the first extruder to the second extruder can be easily fine-tuned.
更に、前記ベント孔の軸線は垂直線に対しほゞ45゜外端
ほど高く傾斜して設けてあるため、重力と螺旋羽根のか
きとり作用を溶融樹脂が受けると共に、前記小径の上流
側の第１押出機のスクリユーの回転数を粗く増減するこ
とで、小径の上流側の第１押出機から大径の下流側の第
２押出機への溶融樹脂の供給量を微調整する相乗作用に
より、前記ベント孔からの溶融樹脂の溢出量を微量にで
きる。Further, since the axis of the vent hole is inclined about 45 ° higher than the vertical line, the molten resin receives gravity and the scraping action of the spiral blade, and at the same time, the first diameter of the upstream side of the small diameter is increased. By roughly increasing or decreasing the number of revolutions of the screw of the extruder, the synergistic effect of finely adjusting the supply amount of the molten resin from the small-diameter upstream first extruder to the large-diameter downstream second extruder is achieved. The amount of molten resin overflow from the vent hole can be made very small.
また前記上流側の第１押出機のスクリュー軸の回転を高
めることができるからペレットの可塑化、溶融効率を高
め易く、かつこの第１押出機の運転動力も軽減できる。Further, since the rotation of the screw shaft of the first extruder on the upstream side can be increased, the plasticization and melting efficiency of pellets can be easily increased, and the operating power of the first extruder can be reduced.
更に前記下流側の第２押出機はそのシリンダ径が大径で
あるためスクリユーの回転数が低くでき、前記上流側の
第１押出機より充分に搬送される樹脂は熱吸収を行い、
またこの低速回転により余分な剪断熱を樹脂に発生させ
ず溶融樹脂の劣化を招来しない。Furthermore, since the cylinder diameter of the second extruder on the downstream side is large, the rotation speed of the screw can be lowered, and the resin sufficiently conveyed from the first extruder on the upstream side absorbs heat.
Further, this low-speed rotation does not cause excessive shearing heat insulation in the resin and does not cause deterioration of the molten resin.
また前記２つの押出機のシリンダ径比が前記0.65乃至0.
9の範囲より大きいときは、異径とした効果はほとんど
なく、この範囲より小さい時は１押出機のスクリユー軸
の回転数がいたずらに早くなり過ぎ、むしろ悪影響を樹
脂に与える。The cylinder diameter ratio of the two extruders is 0.65 to 0.
When it is larger than the range of 9, the effect of making different diameters hardly occurs, and when it is smaller than this range, the rotation speed of the screw shaft of one extruder becomes unnecessarily too fast, and rather adversely affects the resin.
この発明においては更にベント孔は前記下流側の第２押
出機のシリンダの供給部に設けてあるため、第１押出機
と第２押出機間での半溶融樹脂状態でのガス抜きが不要
となり、前記ベント孔から能率良くガス抜きをできると
共に、前記の通り樹脂の溢出量を少なくできる。Further, in this invention, since the vent hole is provided in the supply portion of the cylinder of the second extruder on the downstream side, it is not necessary to release gas in the semi-molten resin state between the first extruder and the second extruder. The gas can be efficiently discharged from the vent hole, and the amount of resin overflow can be reduced as described above.
次にこの発明の代表的な実施例を説明する。 Next, a typical embodiment of the present invention will be described.
図中、10は第１押出機であり、11はこのシリンダ、12は
この中に設けられているスクリユー軸、13はこれを駆動
するための第１のモータ、14は第１押出機10の吐出口で
ある。20は第２押出機であり、21はそのシリンダ、22は
シリンダ21中に装備してあるスクリユー軸、23はこれを
駆動する第２のモータ、16は第１のシリンダ11の吐出口
14と第２のシリンダ21の供給口25を接続している連絡路
15を有する連結部材であり、この連結部材16には連絡路
15中の樹脂圧力を測定する第１圧力計17と第２押出機20
に送り込む圧力を調整する調圧弁18が装備してある。In the figure, 10 is a first extruder, 11 is this cylinder, 12 is a screw shaft provided therein, 13 is a first motor for driving it, and 14 is a first extruder 10. It is a discharge port. 20 is a second extruder, 21 is its cylinder, 22 is a screw shaft mounted in the cylinder 21, 23 is a second motor for driving it, 16 is a discharge port of the first cylinder 11.
Connecting path connecting 14 and supply port 25 of second cylinder 21
15 is a connecting member having a connecting path
First pressure gauge 17 for measuring resin pressure in 15 and second extruder 20
It is equipped with a pressure regulating valve 18 for adjusting the pressure sent to the.
而して第１のシリンダ11の内径d1と第２のシリンダ21の
内径d2との関係は、d1/d2＜１であってd2/d1＝１乃至1.
5としてあり、例えばd1＝100mmのとき、d2＝130mm程度
としてある。Relationship between the inner diameter d 2 of the inner diameter d 1 and a second cylinder 21 of the first cylinder 11 Thus, there is provided a d 1 / d 2 <1 d 2 / d 1 = 1 to 1.
5, for example, when d 1 = 100 mm, d 2 = 130 mm.
第２押出機20の押出口26は押出用ダイ30に第２の連絡路
27を有する第２の連結部材28によって連結してある。第
２押出機20の押出口26の近傍及び第２連結部材28の途中
には内部の樹脂圧力を測定するための第２、第３の圧力
計29、43が設けてある。また第２連結部材28には更に第
２連絡路中の溶融樹脂温度を測定するための温度計31が
設けてある。The extrusion port 26 of the second extruder 20 is connected to the extrusion die 30 by a second communication path.
They are connected by a second connecting member 28 having 27. In the vicinity of the extrusion port 26 of the second extruder 20 and in the middle of the second connecting member 28, second and third pressure gauges 29 and 43 for measuring the internal resin pressure are provided. Further, the second connecting member 28 is further provided with a thermometer 31 for measuring the temperature of the molten resin in the second communication path.
32はベント孔であり、第２押出機20のシリンダ21の供給
口25より下流側の供給路33の前記シリンダ21の側面であ
って、スクリュー軸22が回転によってその螺旋羽根が図
２の如く時計回り方向へ下降する際にこの螺旋羽根の先
端が対向するシリンダ側壁に設けてあり、このベント孔
32の軸線は垂直線に対しほゞ45゜外端ほど高く傾斜して
設けてある。Reference numeral 32 denotes a vent hole, which is a side surface of the cylinder 21 in the supply passage 33 on the downstream side of the supply port 25 of the cylinder 21 of the second extruder 20, and the spiral blade thereof is rotated by the rotation of the screw shaft 22 as shown in FIG. The tip of this spiral blade is provided on the opposite cylinder side wall when descending in the clockwise direction.
The 32 axis is inclined by about 45 ° to the outer edge, which is higher than the vertical axis.
而して、ベント孔32の外端部は気密減圧室34の中段より
上部に設けてあり、底蓋35は開閉自在に設けてあり、前
記気密減圧室34の側壁36及び前記底蓋35の外面には冷却
コイル36、38が取り付けてあり、前記側壁36及び底蓋35
の内面は冷却用の熱交換面になっている。この気密減圧
室34の上部の前記ベント孔32との接続口39とは若干離反
し、かつこれよりも上位位置には真空ポンプ40と連結さ
れるポンプ接続口41が設けてある。42は透明な上蓋であ
る。Thus, the outer end portion of the vent hole 32 is provided above the middle stage of the airtight decompression chamber 34, the bottom lid 35 is openably and closably provided, and the side wall 36 of the airtight decompression chamber 34 and the bottom lid 35 are provided. Cooling coils 36 and 38 are attached to the outer surface, and the side wall 36 and the bottom lid 35 are attached.
The inner surface of is a heat exchange surface for cooling. A pump connection port 41 connected to the vacuum pump 40 is provided at a position slightly above the connection port 39 with the vent hole 32 at the upper part of the airtight decompression chamber 34 and at a position higher than this. 42 is a transparent top lid.
この実施例の作用は本件発明の作用と同じためここでの
説明は省略する。Since the operation of this embodiment is the same as the operation of the present invention, the description thereof is omitted here.
この実施例の効果は本件発明の効果に加えて前記のよう
に構成した気密減圧チャンバ34を介して真空ポンプ40を
ヘント孔32に接続してあるため、前記気密減圧チャンバ
34部分で溶融樹脂と発生ガスの分離ができ、前記真空ポ
ンプ40に溶融樹脂を吸引するおそれはなく、かつこの前
記気密減圧チャンバ34中にもれ溢出した樹脂は冷却され
て固化するため、底蓋35を開けて簡単に除去でき、、前
記真空ポンプ40やヘント孔32の清掃のためこの装置を長
時間停止させ、稼動効率を低下させるおそれがない。In addition to the effect of the present invention, the effect of this embodiment is that the vacuum pump 40 is connected to the gent hole 32 via the airtight depressurizing chamber 34 configured as described above, so that the airtight depressurizing chamber is
The molten resin and the generated gas can be separated at the portion 34, there is no risk of sucking the molten resin into the vacuum pump 40, and the resin leaked into the airtight decompression chamber 34 is cooled and solidified, so that the bottom It can be easily removed by opening the lid 35, and there is no risk of lowering the operating efficiency by stopping this device for a long time for cleaning the vacuum pump 40 and the gent holes 32.
図面はこの発明に係る代表的な実施例を示すものであっ
て、第１図は原理的機構を示す平面図、第２図は第１図
の２−２線縦断正面図である。 図中 10……第１押出機 11……第１のシリンダ d1……第１のシリンダ径 d2……第２のシリンダ径 20……第２押出機 21……第２のシリンダ 32……ベント孔The drawings show a typical embodiment according to the present invention. FIG. 1 is a plan view showing the principle mechanism, and FIG. 2 is a vertical sectional front view taken along line 2-2 of FIG. In the figure, 10 …… First extruder 11 …… First cylinder d 1 …… First cylinder diameter d 2 …… Second cylinder diameter 20 …… Second extruder 21 …… Second cylinder 32… … Vent hole
Claims (2)
側の第２押出機の供給口に近いシリンダの供給部にベン
ト孔が設けてあり、上流側の第１押出機のシリンダ径d1
と下流側の第２押出機のシリンダ径d2の関係がd1/d2＜
１としてあり、前記ベント孔は、第２押出機のシンリン
ダの供給口より下流側の供給部の前記シリンダの側面で
あって、スクリュー軸が回転によってその螺旋羽根が樹
脂送り回転方向へ下降する際にこの螺旋羽根の先端が対
向するシリンダ側壁に設けてあり、このベント孔の軸線
は垂直線に対しほゞ45゜外端ほど高く傾斜して設けてあ
ることを特徴とするベント式異型２段押出装置。1. In a two-stage thermoplastic resin extruder, a vent hole is provided in a supply portion of a cylinder near a supply port of a downstream second extruder, and a cylinder diameter d of an upstream first extruder is provided. 1
And the cylinder diameter d 2 of the downstream second extruder is d 1 / d 2 <
1, the vent hole is a side surface of the cylinder of the supply unit downstream of the supply port of the cylinder of the second extruder, and when the screw shaft is rotated, the spiral blade is lowered in the resin feed rotation direction. The tip of the spiral blade is provided on the opposite side wall of the cylinder, and the axis of the vent hole is inclined by about 45 ° to the vertical line so as to be inclined higher toward the outer end. Extruder.
の範囲第１項記載のベント式異径２段押出装置。2. The vent type different diameter two-stage extrusion apparatus according to claim 1, wherein the ratio d 1 / d 2 is 0.9 to 0.65.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028183A JPH0747293B2 (en) | 1986-02-12 | 1986-02-12 | Vent type different diameter two-stage extruder |
| US07/009,527 US4767303A (en) | 1986-02-12 | 1987-02-02 | Extruding apparatus for extruding synthetic resin |
| CA000528808A CA1288921C (en) | 1986-02-12 | 1987-02-03 | Extruding apparatus for extruding synthetic resin |
| KR1019870000888A KR910000289B1 (en) | 1986-02-12 | 1987-02-04 | Two-stage extruder |
| DE19873703758 DE3703758A1 (en) | 1986-02-12 | 1987-02-07 | EXTRUSION DEVICE FOR EXTRUDING A PLASTIC |
| CN87101886A CN1009718B (en) | 1986-02-12 | 1987-02-11 | Extruding apparatus for extruding synthetic resin |
| FR878701759A FR2594067B1 (en) | 1986-02-12 | 1987-02-12 | EXTRUDER WITH TWO EXTRUDERS |
| FR8708648A FR2599294A1 (en) | 1986-02-12 | 1987-06-19 | EXTRUSION APPARATUS WITH TWO EXTRUDERS |
| CA000616031A CA1310456C (en) | 1986-02-12 | 1991-03-22 | Extruding apparatus for extruding synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028183A JPH0747293B2 (en) | 1986-02-12 | 1986-02-12 | Vent type different diameter two-stage extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62184830A JPS62184830A (en) | 1987-08-13 |
| JPH0747293B2 true JPH0747293B2 (en) | 1995-05-24 |
Family
ID=12241594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61028183A Expired - Lifetime JPH0747293B2 (en) | 1986-02-12 | 1986-02-12 | Vent type different diameter two-stage extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747293B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0323922A (en) * | 1989-06-20 | 1991-01-31 | Mitsubishi Heavy Ind Ltd | Control method for series two-stage extruder |
| KR20200101179A (en) | 2019-02-19 | 2020-08-27 | 산테라 가부시키가이샤 | Film production method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5351905U (en) * | 1976-10-06 | 1978-05-02 | ||
| JPS5417869U (en) * | 1977-02-18 | 1979-02-05 |
-
1986
- 1986-02-12 JP JP61028183A patent/JPH0747293B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62184830A (en) | 1987-08-13 |
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