JP2002187192A - Extrusion molding machine - Google Patents
Extrusion molding machineInfo
- Publication number
- JP2002187192A JP2002187192A JP2000390190A JP2000390190A JP2002187192A JP 2002187192 A JP2002187192 A JP 2002187192A JP 2000390190 A JP2000390190 A JP 2000390190A JP 2000390190 A JP2000390190 A JP 2000390190A JP 2002187192 A JP2002187192 A JP 2002187192A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- extruder
- zone
- kneading
- supercritical fluid
- 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
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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/55—Screws having reverse-feeding elements
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、熱可塑性樹脂用の
押出成形機に関する。詳しくは、超臨界流体の存在下で
熱可塑性樹脂を溶融混練するために使用できる押出成形
機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extruder for thermoplastic resin. More specifically, the present invention relates to an extruder that can be used for melt-kneading a thermoplastic resin in the presence of a supercritical fluid.
【０００２】[0002]
【従来の技術】押出成形機での溶融混練時に、超臨界流
体を溶融した樹脂に接触溶解させて混練することによ
り、相溶しないポリマー間の混合状態や無機物を充填し
たポリマーのモルフォロジーを制御する研究が、ポリマ
ー加工の研究者らによって近年盛んに行われるようにな
ってきている。非相溶ポリマーの分散については、Soci
ety of Plastic Engineering Annual Technology Confe
rence 57th vol.2, p2806-2810 (1999)や、Polymer Eng
ineering Science vol.39, No.10,p2075- 2084 (1999)
等の文献において、また無機物充填ポリマーのモルフォ
ロジー制御に関しては特開2000−53871号公報におい
て、それぞれその可能性について言及されている。2. Description of the Related Art At the time of melt-kneading in an extruder, a supercritical fluid is brought into contact with and melted in a molten resin and kneaded to control the mixing state between incompatible polymers and the morphology of a polymer filled with an inorganic substance. Research has been actively conducted in recent years by researchers in polymer processing. For information on dispersion of incompatible polymers, see Soci
ety of Plastic Engineering Annual Technology Confe
rence 57th vol.2, p2806-2810 (1999), Polymer Eng
ineering Science vol.39, No.10, p2075- 2084 (1999)
And the like, and the morphology control of the inorganic-filled polymer is described in JP-A-2000-53871, respectively.
【０００３】超臨界流体としては、使用する物質の安全
性や超臨界状態の制御性等の観点から、二酸化炭素が好
ましく用いられるが、その臨界温度は３１℃、臨界圧力
は７１ｋｇ／ｃｍ2である。超臨界流体を溶融ポリマー
に接触溶解させて混練する部分の樹脂温度及び圧力は、
その臨界条件以上とする必要があるので、二酸化炭素を
使用した場合は、上記の温度、圧力以上で混練しなくて
はならない。As a supercritical fluid, carbon dioxide is preferably used from the viewpoint of safety of a substance to be used and controllability of a supercritical state, but its critical temperature is 31 ° C. and its critical pressure is 71 kg / cm 2 . is there. The resin temperature and pressure of the part where the supercritical fluid is contacted and dissolved in the molten polymer and kneaded,
Since it is necessary to keep the temperature above the critical condition, when carbon dioxide is used, it must be kneaded at the above temperature and pressure or higher.
【０００４】このため、ギアポンプを押出成形機先端に
設置し、その回転数を制御することにより、押出成形機
内部圧力を臨界圧力以上として超臨界混練を行う方法を
用いる例が多い（先端ギアポンプ法）。しかしながら、
この方法では、ギアポンプを通過した先の圧力は大気圧
に開放されており、樹脂中に溶解していた超臨界流体が
急速に膨張・気化することになる。通常この膨張速度は
樹脂中での気体の拡散速度よりも大きいため、超臨界状
態を脱したガスは、樹脂表面を経由して揮発する前に、
樹脂の内部で膨張してしまう。For this reason, a method of supercritical kneading by setting a gear pump at the tip of the extruder and controlling the number of revolutions thereof to make the internal pressure of the extruder higher than the critical pressure is often used (tip gear pump method). ). However,
In this method, the pressure after passing through the gear pump is released to the atmospheric pressure, and the supercritical fluid dissolved in the resin rapidly expands and vaporizes. Normally, this expansion rate is higher than the gas diffusion rate in the resin, so that the gas that has escaped from the supercritical state, before volatilizing through the resin surface,
It expands inside the resin.
【０００５】従って、ギアポンプの出口から得られる樹
脂は気泡を含有した状態となっており、カッター等によ
ってペレット状に形を整えることが困難であり、またガ
スの一部が樹脂中に残存するため、混練後の樹脂または
これから得られる成形品のの品質に悪影響を及ぼすこと
もある。このため、超臨界混練を行った後に超臨界流体
から生成するガスを樹脂中から除去し、発泡を防止する
ことが可能な押出成形機が要請されている。[0005] Therefore, the resin obtained from the outlet of the gear pump contains air bubbles, it is difficult to adjust the shape of the resin into a pellet by a cutter or the like, and a part of the gas remains in the resin. This may adversely affect the quality of the kneaded resin or the molded product obtained therefrom. For this reason, there is a demand for an extruder capable of removing gas generated from a supercritical fluid after performing supercritical kneading from a resin and preventing foaming.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、上記
の従来技術の問題点を解消し、超臨界混練後に、気化し
た超臨界流体を、樹脂の発泡を引き起こすことなく除去
することが可能な押出成形機を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to remove a vaporized supercritical fluid without causing resin foaming after supercritical kneading. And to provide a suitable extruder.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、超臨界混
練後に発泡を防止しつつ超臨界流体から気化したガスを
樹脂から除去することができる押出成形機を鋭意検討し
た結果、押出成形機を２つの帯域に混練状態において圧
密に維持しつつ区分することにより上記課題が解決でき
ることを見出し、本発明を完成した。Means for Solving the Problems The present inventors have intensively studied an extruder capable of removing gas vaporized from a supercritical fluid from a resin while preventing foaming after supercritical kneading. The inventors have found that the above-mentioned problems can be solved by dividing the machine into two zones while maintaining the kneaded state in a kneaded state, and completed the present invention.
【０００８】即ち、本発明の要旨は、少なくとも２つの
帯域に区分可能なシリンダーを有し、かつ、該区分され
た帯域の内、より上流側の帯域に超臨界流体の供給口
が、より下流側の帯域に揮発分の除去口が設けられてな
る押出成形機、に存している。本発明の他の要旨は、帯
域の区分のためにゲートバルブが設けられてなる上記の
押出成形機、帯域が区分される部位近傍のスクリュー
が、その回転方向に対して逆ネジ方向のフルフライト、
ニーディングディスク及びシールリングから選ばれる少
なくとも１種のスクリューにより構成されてなる上記の
押出成形機、にも存している。[0008] That is, the gist of the present invention is to provide a cylinder having at least two zones which can be divided into two zones, and a supercritical fluid supply port is provided at a more upstream zone among the divided zones. Extrusion molding machine in which a volatile removing port is provided in the side zone. According to another aspect of the present invention, there is provided the above-described extruder in which a gate valve is provided for dividing a zone, wherein a screw near a portion where a zone is divided has a full flight in a reverse screw direction to a rotation direction thereof. ,
The present invention also resides in the above extruder comprising at least one kind of screw selected from a kneading disk and a seal ring.
【０００９】本発明の別の要旨は、超臨界流体の供給口
を有する帯域内のスクリューが、ニーディングディスク
及びローターの少なくとも一方で構成されてなる上記の
押出成形機、及び上記のいずれかの押出成形機を二軸押
出成形機としたもの、にも存している。[0009] Another gist of the present invention is the above-described extruder, wherein the screw in the zone having the supply port of the supercritical fluid is constituted by at least one of a kneading disk and a rotor. An extruder is a twin-screw extruder.
【００１０】[0010]
【発明の実施の形態】以下に本発明を、図１の構造の押
出成形機を例に取って詳細に説明する。本発明の押出成
形機においては、通常溶融した熱可塑性樹脂と超臨界流
体を接触溶解した状態で溶融混練を行う。このような押
出成形機は以下に示すような部分から構成されている。 １） 超臨界流体発生装置（Ａ） 超臨界状態に相転移可能な物質を、臨界温度及び臨界圧
力以上とすることにより、超臨界化するための装置。こ
の装置は、押出成形機シリンダに設けられた超臨界流体
供給口（Ａ′）と超臨界流体注入配管を介して連結され
ており、この注入配管は、超臨界状態維持のため、臨界
圧力以上の耐圧と臨界温度以上の加温とが可能なもので
ある必要がある。 ２） 押出成形機本体（Ｂ）及び超臨界混練部（Ｃ） 熱可塑性樹脂の溶融混練が可能なスクリュー式の押出成
形機であり、生産性の観点からは二軸押出成形機が好ま
しい。そのスクリューの回転方向や噛み合い率、スクリ
ュー長さやスクリュー径については、特に限定されるこ
となく任意のものが使用される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an extruder having the structure shown in FIG. In the extrusion molding machine of the present invention, melt-kneading is usually performed in a state where a melted thermoplastic resin and a supercritical fluid are contact-melted. Such an extruder comprises the following parts. 1) Supercritical fluid generator (A) An apparatus for supercritically converting a substance capable of phase transition to a supercritical state to a temperature higher than a critical temperature and a critical pressure. This apparatus is connected to a supercritical fluid supply port (A ') provided in an extruder cylinder via a supercritical fluid injection pipe, and this injection pipe is at a pressure higher than a critical pressure in order to maintain a supercritical state. It is necessary to be able to withstand pressure and to heat above the critical temperature. 2) Extruder body (B) and supercritical kneading section (C) A screw-type extruder capable of melt-kneading a thermoplastic resin, and a twin-screw extruder is preferable from the viewpoint of productivity. The rotation direction and the meshing ratio of the screw, the screw length and the screw diameter are not particularly limited, and any one can be used.
【００１１】また、押出運転の安定性を向上するため
に、押出成形機先端にギアポンプを設置したり、２軸押
出成形機と単軸押出成形機をシュート配管により直列に
連結した、２段型のタンデム式押出成形機としてもよ
い。本発明においては、押出成形機は少なくとも２つの
帯域に区分可能なシリンダーを有する必要がある。この
区分は臨界状態を良好に維持するために、混練時には圧
密状態を保って区分できるようにすることが好ましい。Further, in order to improve the stability of the extrusion operation, a gear pump is installed at the tip of the extruder, or a two-stage type in which a twin-screw extruder and a single-screw extruder are connected in series by a chute pipe. Tandem-type extruder. In the present invention, the extruder must have a cylinder that can be divided into at least two zones. In order to maintain a good critical state, it is preferable that the section can be separated while maintaining a compacted state during kneading.
【００１２】これによって、超臨界混練を行う完全充満
帯域（以下「超臨界混練部」と記す、Ｃ）、と気化した
超臨界流体を除去（脱揮）する不完全充満帯域（以下
「減圧脱揮部」と記す、Ｄ）とに分離することが可能と
なり、それぞれの帯域の樹脂圧力を制御することが可能
となる。圧密状態を維持しつつ、シリンダーを上記のよ
うな２つ以上の帯域に区分するためには、例えばゲート
バルブ（Ｈ）や、スクリューの軸方向にシリンダが移動
可能なスロット機構などを設ければよいが、装置の簡便
性等の観点からゲートバルブを用いるのが好ましい。Thus, a completely filled zone for performing supercritical kneading (hereinafter referred to as “supercritical kneading section”, C) and an incompletely filled zone for removing (devolatilizing) a vaporized supercritical fluid (hereinafter referred to as “decompression degassing”). D), which is referred to as a “government part”, and the resin pressure in each zone can be controlled. In order to divide the cylinder into two or more zones as described above while maintaining the compacted state, for example, a gate valve (H) or a slot mechanism capable of moving the cylinder in the axial direction of the screw may be provided. Although it is good, it is preferable to use a gate valve from the viewpoint of simplicity of the apparatus.
【００１３】この区分された帯域のうち、より原料樹脂
（Ｉ）の供給口（ホッパー、Ｇ）に近い帯域、即ち超臨
界混練部には、前記の超臨界流体を供給するための超臨
界流体注入配管を接続し、また、より原料供給口に遠い
帯域、即ち減圧脱揮部には揮発分の除去口（Ｆ′）を設
けて、臨界状態を脱して生成したガスを系外へ放出す
る。この後者の帯域内では、圧力を臨界圧力未満とし、
かつ樹脂が帯域内に充満しないようにすることが、脱揮
効率の点から好ましい。Of the divided zones, the zone closer to the supply port (hopper, G) for the raw material resin (I), that is, the supercritical kneading section, is used to supply the supercritical fluid for supplying the supercritical fluid. An injection pipe is connected, and a zone farther away from the raw material supply port, that is, a volatile matter removing port (F ') is provided in the decompression devolatilizing section, and a gas generated by escaping from the critical state is released to the outside of the system. . In this latter zone, the pressure is below the critical pressure,
In addition, it is preferable that the resin is not filled in the zone from the viewpoint of devolatilization efficiency.
【００１４】なお、この超臨界混練部には、その圧力を
検知するための圧力センサー（Ｅ）の検出端を設けて、
系が臨界状態となっていることを確認することができる
ようにしておくことが好ましい。 ３）スクリュー構成 本発明の押出成形機に設置されるスクリューの超臨界混
練部に相当する部位には、熱可塑性樹脂と熱安定剤や各
種充填物とを分散混合するための混練エレメントが配置
されているのが好ましい。このような混練エレメントと
しては、例えば、ニーディングディスク、ロータ、切欠
きフライト、リング、マドックエレメント、等が例示で
きるが、本発明の押出成形機においては、特に限定する
ことなく、任意のものが使用できる。中でも、分配・分
散混合性能の観点から、ニーディングディスク又はロー
タが好適に使用され、必要に応じて、順送り方向又は逆
送り方向のフルフライトを併用したスクリュー構成とし
てもよい。The supercritical kneading section is provided with a detection end of a pressure sensor (E) for detecting its pressure,
It is preferable to be able to confirm that the system is in a critical state. 3) Screw Configuration A kneading element for dispersing and mixing the thermoplastic resin with the heat stabilizer and various fillers is disposed at a portion corresponding to the supercritical kneading section of the screw installed in the extruder of the present invention. Is preferred. Examples of such a kneading element include, for example, a kneading disk, a rotor, a notched flight, a ring, a mudock element, and the like, but in the extruder of the present invention, without particular limitation, any one can be used. Can be used. Among them, a kneading disk or a rotor is preferably used from the viewpoint of distribution / dispersion mixing performance, and a screw configuration using a full flight in a forward feed direction or a reverse feed direction may be used as necessary.
【００１５】また、前記２つの帯域が区分される部位近
傍におけるスクリュー構成は、上流側の超臨界混練部の
圧力を臨界圧力以上に維持し、かつ２つの帯域を圧密に
維持するために、スクリューの回転により昇圧されるよ
うな逆送りエレメントを配置する事が好ましい。この様
な逆送りエレメントとしては、例えば、逆送り方向のフ
ルフライト、逆送り方向のニーディングディスク、シー
ルリング等が挙げられるが、昇圧能力の観点から、逆送
り方向のフルフライトを用いるのが好ましい。Further, the screw structure in the vicinity of the part where the two zones are divided is such that the screw is maintained so as to maintain the pressure of the supercritical kneading section on the upstream side at a critical pressure or higher and maintain the two zones in a compact state. It is preferable to arrange a reverse feed element whose pressure is increased by the rotation of. Such a reverse feed element includes, for example, a full flight in the reverse feed direction, a kneading disc in the reverse feed direction, a seal ring, and the like.From the viewpoint of boosting ability, it is preferable to use a full flight in the reverse feed direction. preferable.
【００１６】一方減圧脱揮部（Ｄ）に相当する部位にお
けるスクリューは、脱揮の観点から、昇圧能力の無い順
送りのフルフライトのみ、又は少なくともこれを主体と
した構成とするのが好ましい。 ４）減圧脱揮部（Ｄ） 超臨界混練部から区分されて、系内の圧が臨界圧力未満
となるように制御される減圧脱揮部においては、前記の
揮発分除去口（Ｆ′）から、超臨界状態を脱して生成し
たガスが排出される。この揮発分除去口には、真空ポン
プ等の減圧装置（Ｆ）へ導かれる配管が接続される。On the other hand, from the viewpoint of devolatilization, the screw at the portion corresponding to the decompression devolatilization section (D) is preferably constituted by only a forward full flight having no boosting capacity or at least mainly composed of this. 4) Vacuum devolatilization unit (D) In the vacuum devolatilization unit which is separated from the supercritical kneading unit and is controlled so that the pressure in the system becomes lower than the critical pressure, the above-mentioned devolatilization port (F ') From the supercritical state is discharged. A pipe leading to a decompression device (F) such as a vacuum pump is connected to the devolatilization port.
【００１７】この配管には、必要に応じて加熱・冷却が
可能となるような温度調節装置を付してもよい。また、
この減圧脱揮部には圧力の検出端を設けて圧力センサー
（Ｅ）に圧力データを転送するとともに、揮発分除去口
付近には、ブルドン管等の圧力計を取り付けておくのも
よい。 ５）ダイス部（図示せず） 本発明の押出成形機には、押出成形機最先端部分にダイ
スを設置して、押し出された溶融樹脂を所望の形状に賦
形するのがよい。また、更なる加工用原料とするため
に、この樹脂を冷却固化させた後、裁断してペレット状
にしてもよい。[0017] The pipe may be provided with a temperature control device which enables heating and cooling if necessary. Also,
This pressure reduction devolatilization unit may be provided with a pressure detection end to transfer pressure data to the pressure sensor (E), and a pressure gauge such as a Bourdon tube may be attached near the devolatilization port. 5) Dies (not shown) In the extruder of the present invention, it is preferable to set a die at the foremost part of the extruder and to shape the extruded molten resin into a desired shape. Further, in order to use the resin for further processing, the resin may be cooled and solidified, and then cut into pellets.
【００１８】この裁断方式としては、ダイスから押し出
したストランド状の溶融樹脂を水槽等の冷却装置で冷却
固化させ、回転刃により裁断するストランドカット方式
や、水中に押し出した溶融樹脂を固化前に回転刃で裁断
するアンダーウォーターカット方式等、任意の方式のも
のが使用される。また、必要に応じて、未溶融物や分散
不良物が製品中に混入するのを防止する目的で、ダイス
の手前にスクリーンを設置してもよく、生産効率向上の
観点から、スクリーンの自動交換が可能なオートスクリ
ーンチェンジャーを設けてもよい。 ６）全体 この様に構成された本発明の押出成形機は、超臨界混練
を行った後に超臨界流体が気化して生成したガスを溶融
樹脂から穏やかに除去する事が可能であり、その結果、
超臨界混練により得られた樹脂を発泡を抑制しつつペレ
ット化とすることが可能であるばかりでなく、得られた
樹脂中にはガス成分が残存していないため、品質良好な
樹脂を製造することができる。As the cutting method, a strand-shaped molten resin extruded from a die is cooled and solidified by a cooling device such as a water tank and then cut by a rotary blade, or a molten resin extruded into water is rotated before solidifying. Any method such as an underwater cutting method of cutting with a blade is used. In addition, if necessary, a screen may be installed before the die in order to prevent unmelted matter or poorly dispersed matter from being mixed into the product.From the viewpoint of improving production efficiency, the screen is automatically replaced. An automatic screen changer capable of performing the above operation may be provided. 6) Overall The extruder of the present invention configured as described above is capable of gently removing the gas generated by the supercritical fluid being vaporized after performing the supercritical kneading from the molten resin. ,
Not only can the resin obtained by supercritical kneading be formed into pellets while suppressing foaming, but since no gas component remains in the obtained resin, a resin of good quality is produced. be able to.
【００１９】[0019]
【発明の効果】本発明の押出成形機を用いることによ
り、熱可塑性樹脂を超臨界混練する際に、超臨界状態を
脱して生成するガスを樹脂中から穏やかに除去する事が
可能であり、取扱容易なペレット状の製品を得られるだ
けでなく、製品中にガスが残存していないため、二次加
工時における発泡や、気泡の巻き込みによる強度低下等
を回避することができ、良好な品質の成形体を得ること
ができる。By using the extruder of the present invention, when supercritical kneading a thermoplastic resin, it is possible to gently remove from the resin the gas generated by escaping from the supercritical state, Not only is it possible to obtain pellet-shaped products that are easy to handle, but because there is no gas remaining in the products, foaming during secondary processing and strength reduction due to entrapment of air bubbles can be avoided, and good quality Can be obtained.
【図１】装置構成概要図FIG. 1 is a schematic diagram of an apparatus configuration.
【図２】ゲートバルブ断面図（本図は上下に可動式のゲ
ートバルブが開いた状態を示している。図中左側の上下
方向の矢印はその作動方向を示す。）FIG. 2 is a cross-sectional view of a gate valve (this figure shows a state in which a movable gate valve is opened up and down; an up and down arrow on the left side in the figure shows its operation direction).
【図３】スクリューの構成例FIG. 3 shows a configuration example of a screw.
【符号の説明】 Ａ：超臨界流体発生装置 Ａ ′：超臨界流体供給口 Ｂ：押出成形機 Ｃ：第１帯域（超臨界混練部） Ｄ：第２帯域（減圧脱揮部） Ｅ：圧力センサー Ｆ：減圧装置 Ｆ′：揮発分除去口 Ｇ：原料供給口（ホッパー） Ｈ：ゲートバルブ Ｈ′：ゲートバルブ近傍部 Ｉ：原料樹脂 Ｊ：スクリュー Ｋ：シリンダーブロック Ｌ：順送り方向のフルフライトスクリュー Ｍ：順送り方向のニーディングディスク Ｎ：直交ニーディングディスク Ｏ：逆送り方向のニーディングディスク Ｐ：逆送り方向のフルフライトスクリュー[Description of Signs] A: Supercritical fluid generator A ': Supercritical fluid supply port B: Extruder C: First zone (supercritical kneading section) D: Second zone (vacuum devolatilization section) E: Pressure Sensor F: Decompression device F ': Volatile removal port G: Raw material supply port (hopper) H: Gate valve H': Near gate valve I: Raw material resin J: Screw K: Cylinder block L: Full flight screw in forward direction M: kneading disk in forward direction N: orthogonal kneading disk O: kneading disk in reverse direction P: full flight screw in reverse direction
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｋ 101:12 Ｂ２９Ｋ 101:12 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // B29K 101: 12 B29K 101: 12
Claims (5)
ンダーを有し、かつ、該区分された帯域の内、より上流
側の帯域に超臨界流体の供給口が、より下流側の帯域に
揮発分の除去口が設けられてなる押出成形機。1. A cylinder which can be divided into at least two zones, wherein a supply port of a supercritical fluid is provided in a more upstream zone of the divided zones, and a volatile component is provided in a more downstream zone. Extrusion molding machine provided with a removal port.
られてなる請求項１に記載の押出成形機。2. The extruder according to claim 1, wherein a gate valve is provided for dividing the zone.
が、その回転方向に対して逆ネジ方向のフルフライト、
ニーディングディスク及びシールリングから選ばれる少
なくとも１種のスクリューにより構成されてなる請求項
１又は２に記載の押出成形機。3. A screw in the vicinity of a part where the band is divided, wherein the screw is a full flight in a reverse screw direction to the rotation direction thereof,
3. The extruder according to claim 1, wherein the extruder comprises at least one screw selected from a kneading disk and a seal ring.
クリューが、ニーディングディスク及びローターの少な
くとも一方で構成されてなる請求項１〜３のいずれか１
項に記載の押出成形機。4. The screw according to claim 1, wherein the screw in the zone having a supply port for the supercritical fluid is constituted by at least one of a kneading disk and a rotor.
An extrusion molding machine according to the item.
軸押出成形機。5. The twin-screw extruder according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000390190A JP2002187192A (en) | 2000-12-22 | 2000-12-22 | Extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000390190A JP2002187192A (en) | 2000-12-22 | 2000-12-22 | Extrusion molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002187192A true JP2002187192A (en) | 2002-07-02 |
Family
ID=18856602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000390190A Pending JP2002187192A (en) | 2000-12-22 | 2000-12-22 | Extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002187192A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002355880A (en) * | 2001-05-31 | 2002-12-10 | Japan Steel Works Ltd:The | Kneading/devolatilizing extrusion molding apparatus utilizing supercritical fluid |
| JP2006315261A (en) * | 2005-05-12 | 2006-11-24 | Japan Steel Works Ltd:The | Compound-screw kneading extruder and extrusion foam molding method |
| WO2009057753A1 (en) * | 2007-11-02 | 2009-05-07 | Kabushiki Kaisha Kobe Seiko Sho | Mechanism for regulating kneadability, extruder, continuous kneading machine, method for regulating kneadability and kneading method |
| JP2011509197A (en) * | 2008-01-03 | 2011-03-24 | ウェンガー マニュファクチュアリング アイエヌシー． | Extruder with variable intermediate barrel flow control and adjacent high strength mixing assembly |
| JPWO2015046318A1 (en) * | 2013-09-26 | 2017-03-09 | 伏虎金属工業株式会社 | Blender and blender pump |
| JP2019051632A (en) * | 2017-09-14 | 2019-04-04 | 株式会社神戸製鋼所 | Kneader |
| JP2019084763A (en) * | 2017-11-07 | 2019-06-06 | 株式会社神戸製鋼所 | Mixing device |
| JP7422327B2 (en) | 2020-01-09 | 2024-01-26 | パナソニックＩｐマネジメント株式会社 | kneading machine |
-
2000
- 2000-12-22 JP JP2000390190A patent/JP2002187192A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002355880A (en) * | 2001-05-31 | 2002-12-10 | Japan Steel Works Ltd:The | Kneading/devolatilizing extrusion molding apparatus utilizing supercritical fluid |
| JP2006315261A (en) * | 2005-05-12 | 2006-11-24 | Japan Steel Works Ltd:The | Compound-screw kneading extruder and extrusion foam molding method |
| WO2009057753A1 (en) * | 2007-11-02 | 2009-05-07 | Kabushiki Kaisha Kobe Seiko Sho | Mechanism for regulating kneadability, extruder, continuous kneading machine, method for regulating kneadability and kneading method |
| JP2009113246A (en) * | 2007-11-02 | 2009-05-28 | Kobe Steel Ltd | Kneading adjusting mechanism, extruder, continuous kneader and method for adjusting degree of kneading |
| US9463581B2 (en) | 2007-11-02 | 2016-10-11 | Kobe Steel, Ltd. | Kneading degree adjusting mechanism, extruder, continuous mixer, kneading degree adjusting method, and kneading method |
| JP2011509197A (en) * | 2008-01-03 | 2011-03-24 | ウェンガー マニュファクチュアリング アイエヌシー． | Extruder with variable intermediate barrel flow control and adjacent high strength mixing assembly |
| JPWO2015046318A1 (en) * | 2013-09-26 | 2017-03-09 | 伏虎金属工業株式会社 | Blender and blender pump |
| JP2019051632A (en) * | 2017-09-14 | 2019-04-04 | 株式会社神戸製鋼所 | Kneader |
| JP2019084763A (en) * | 2017-11-07 | 2019-06-06 | 株式会社神戸製鋼所 | Mixing device |
| JP7422327B2 (en) | 2020-01-09 | 2024-01-26 | パナソニックＩｐマネジメント株式会社 | kneading machine |
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