JPH09239726A - Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same - Google Patents

Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same

Info

Publication number
JPH09239726A
JPH09239726A JP8054842A JP5484296A JPH09239726A JP H09239726 A JPH09239726 A JP H09239726A JP 8054842 A JP8054842 A JP 8054842A JP 5484296 A JP5484296 A JP 5484296A JP H09239726 A JPH09239726 A JP H09239726A
Authority
JP
Japan
Prior art keywords
kneading
kneader
screw
stage
rubber
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
JP8054842A
Other languages
Japanese (ja)
Inventor
Masami Nakaya
谷 誠 巳 仲
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 Chemical Corp
Original Assignee
Mitsubishi Chemical Corp
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 Chemical Corp filed Critical Mitsubishi Chemical Corp
Priority to JP8054842A priority Critical patent/JPH09239726A/en
Publication of JPH09239726A publication Critical patent/JPH09239726A/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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/465—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft each shaft comprising rotor parts of the Banbury type in addition to screw parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7466—Combinations of similar mixers
    • 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
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To produce a thermoplastic resin and/or rubber compd. excellent in low temp. kneading characteristics without being accompanied by the lowering of kneading and extrusion treatment capacity by reducing the generation of heat caused by shearing force at a time of kneading to suppress the lowering of physical properties caused by thermal deterioration by using a twin-screw kneader as a kneader. SOLUTION: A high speed twin-screw kneader is used as a first stage kneader 1 and a twin-screw kneading extruder is used as a second stage kneader 2 to constitute a tandem type kneading apparatus 3. The rotational speed of the screws or rotors of the first stage kneader is set to 200-1000rpm. to execute melt kneading. The rotational speed of the screws or rotors of the second kneader 2 is set to 20-400rpm. to execute melt kneading by low speed rotation. The rotational speed of the screws or rotors of the second stage kneader 2 is made half or less that of the screws or rotors of the first stage kneader 1 to perform melt kneading.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、１種類又は２種類
以上の組成の熱可塑性樹脂及び／又はゴムよりなる原材
料を連続的に溶融混練させて、低温混練特性に優れた熱
可塑性樹脂及び／又はゴムの配合物を製造するためのタ
ンデム型混練装置及びそれを用いた熱可塑性樹脂及び／
又はゴムの混練方法に関するものである。TECHNICAL FIELD The present invention relates to a thermoplastic resin having excellent low-temperature kneading properties by continuously melting and kneading raw materials consisting of thermoplastic resins and / or rubbers having one or more compositions. Or tandem type kneading apparatus for producing rubber compound and thermoplastic resin and / or the same
Alternatively, it relates to a kneading method of rubber.

【０００２】[0002]

【従来の技術】一般に、混練機は、重合反応器で製造さ
れたパウダー状の熱可塑性樹脂やゴム等をペレット化す
ると同時に、得られる熱可塑性樹脂やゴム等の改質を行
なうため、或いは、二種類以上の組成の熱可塑性樹脂及
び／又はゴムよりなる原材料を混練して新規な組成物を
得る等のために、この種の技術分野においては広範囲に
使用されている。従って、コストカットを行なう等のた
め大容量の混練処理能力とすることや、或いは、物性の
優れた製品を得る等のためには、常に、混練機の混練性
能の向上が求められている。それ故、単軸押出機を出発
点とする混練機の混練性能を改良するために、従来よ
り、各種形状の混練機が提案されている。その様に改良
された混練機の中で、広く一般に使用されているものと
しては、スクリュー又はローターを二軸とした混練機で
あって、これらは主として、 独国ワーナー社のＺＳＫ機に代表される二軸混練押
出機と、 米国ファレル社のＦＣＭ機をオリジナルとする高速
二軸混練機の二種類に大別されている。これらの混練機
は、種々のたび重なる改良が行なわれた結果、徐々にで
はあるが性能が向上して、最近では時間当たりの押出量
で約３０ｔ／時間までの大容量の処理能力が得られるま
でに至っている。2. Description of the Related Art Generally, a kneading machine pelletizes powdery thermoplastic resin or rubber produced in a polymerization reactor, and at the same time reforms the obtained thermoplastic resin or rubber, or It is widely used in the technical field of this kind, for example, for kneading raw materials consisting of thermoplastic resins and / or rubbers having two or more kinds of compositions to obtain a new composition. Therefore, in order to increase the kneading capacity of a large capacity for cost reduction or to obtain a product having excellent physical properties, it is always required to improve the kneading performance of the kneader. Therefore, in order to improve the kneading performance of a kneading machine starting from a single-screw extruder, kneading machines of various shapes have been conventionally proposed. Among such improved kneaders, one widely used in general is a kneader with a twin screw or rotor, which is mainly represented by the ZSK machine of Warner GmbH of Germany. It is roughly divided into two types: a twin-screw kneading extruder and a high-speed twin-screw kneading machine based on the original FCM machine of Farrell, USA. As a result of various and repeated improvements, these kneaders have gradually and gradually improved performance, and recently, a large-capacity processing capacity of up to about 30 t / hour in extrusion rate per hour is obtained. Up to.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、上記混
練機では、得られる混練物の物性が品質的に満足できる
ものでなく、中でも、低樹脂温度下での混練が要求され
る様な原材料を用いたものや、用途であるものは、未だ
に不十分な性能の状態のままである。特に、高粘度の熱
可塑性樹脂及び／又はゴムに関しては、混練時の剪断力
による発熱量が著しく大きくなってしまうため、これが
熱可塑性樹脂又はゴム温度の上昇に繋がり、結果的に、
得られる熱可塑性樹脂又はゴムの熱劣化による物性の低
下が余儀なくされている。従って、この様な熱可塑性樹
脂又はゴムの熱劣化を防止するために、混練機のスクリ
ュー又はローターの回転速度を低下させて、混練時の剪
断力による発熱が激しくならない程度の混練速度にする
と、得られる混練物は混練が不足することとなり、得ら
れる熱可塑性樹脂又はゴムの所期の物性が得られないば
かりか、混練機の混練押出処理能力の点についても著し
い低下を伴なう等の事態が生じるので、上記期待に応え
ることができなかった。それ故、未だ熱可塑性樹脂及び
／又はゴムの混練装置として完全なものとなるまでには
至っていない。However, in the above kneading machine, the physical properties of the obtained kneaded product are not satisfactory in quality, and in particular, raw materials that require kneading at a low resin temperature are used. The existing ones and the ones for which they are used are still in a state of insufficient performance. In particular, for a high-viscosity thermoplastic resin and / or rubber, the amount of heat generated by shearing force during kneading becomes extremely large, which leads to an increase in temperature of the thermoplastic resin or rubber, and as a result,
It is unavoidable that the physical properties of the resulting thermoplastic resin or rubber deteriorate due to thermal deterioration. Therefore, in order to prevent thermal deterioration of such a thermoplastic resin or rubber, the rotation speed of the screw or rotor of the kneading machine is reduced to a kneading speed at which heat generation due to shearing force during kneading does not become severe, The resulting kneaded product becomes insufficient in kneading, and not only the desired physical properties of the obtained thermoplastic resin or rubber cannot be obtained, but also the kneading extruding capacity of the kneading machine is significantly reduced. Because of the situation, I was unable to meet the above expectations. Therefore, it has not yet been completed as a kneading device for thermoplastic resin and / or rubber.

【０００４】この様な混練押出処理能力の向上並びに混
練物の高品質化等の市場での高度の要求性能に対処する
ため、上記混練機を単軸混練機と単軸混練機との組み合
わせや、第１段目に二軸混練機、第２段目に単軸混練機
を組み合わせる等の、同種或いは異種の複数の混練機を
直列に連結するタンデム型押出機も提案され実用化され
ている。しかしながら、上記の問題点に対する性能で
は、やはり十分であるとは言えず、それが適用されるも
のは特殊な用途や目的のもののみに限定されている。In order to cope with the high performance demands in the market such as the improvement of the kneading / extruding processing ability and the improvement of the quality of the kneaded product, the kneading machine is combined with a single-screw kneader and a single-screw kneader. A tandem extruder in which a plurality of mixers of the same kind or different kinds are connected in series, such as a twin-screw kneader in the first stage and a single-screw kneader in the second stage, has been proposed and put into practical use. . However, it cannot be said that the performance for the above-mentioned problems is sufficient, and the application thereof is limited to only the special use and the purpose.

【０００５】[0005]

【課題を解決するための手段】本発明者は、上記問題点
に鑑みて鋭意研究を重ねた結果、特定の条件を満足する
タンデム型混練装置及びそれを用いた熱可塑性樹脂及び
／又はゴムの混練方法により、低温混練が可能で、混練
物の品質を大幅に向上させながら、大容量の処理能力が
得られることを見出だし、本発明を完成するに至ったも
のである。すなわち、本発明のタンデム型混練装置は、
タンデム型混練装置において、少なくとも第１段目及び
第２段目の混練機が二軸混練機であることを特徴とする
ものである。また、本発明のもう一つの発明である混練
方法は、タンデム型混練装置を用いて連続混練する熱可
塑性樹脂及び／又はゴムの混練方法において、少なくと
も第１段目及び第２段目の混練機に二軸混練機を用いる
と共に、前記第１段目混練機のスクリュー又はローター
の回転速度を２００〜１，０００ｒｐｍ、第２段目混練
機のスクリュー又はローターの回転速度を２０〜４００
ｒｐｍの範囲内とし、かつ、第２段目混練機のスクリュ
ー又はローターの回転速度を第１段目混練機のスクリュ
ー又はローターの回転速度の二分の一以下の速度で混練
することを特徴とするものである。Means for Solving the Problems As a result of intensive studies in view of the above problems, the present inventor has found that a tandem-type kneading apparatus satisfying specific conditions and a thermoplastic resin and / or rubber using the same By the kneading method, low temperature kneading was possible, and it was found that a large capacity of processing capacity can be obtained while significantly improving the quality of the kneaded material, and the present invention has been completed. That is, the tandem type kneading device of the present invention,
In the tandem type kneading device, at least the first and second kneaders are biaxial kneaders. A kneading method which is another invention of the present invention is a kneading method for a thermoplastic resin and / or rubber in which kneading is continuously carried out using a tandem kneading device, wherein at least the first and second kneading machines are used. While using a biaxial kneader, the rotation speed of the screw or rotor of the first stage kneader is 200 to 1,000 rpm, the rotation speed of the screw or rotor of the second stage kneader is 20 to 400
It is within the range of rpm, and kneading is performed at a rotation speed of the screw or rotor of the second-stage kneader at a speed that is ½ or less of the rotation speed of the screw or rotor of the first-stage kneader. It is a thing.

【０００６】[0006]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

[I] 原材料熱可塑性樹脂及び／又はゴム 本発明のタンデム型混練装置を用いた１種又は２種以上
の組成の熱可塑性樹脂及び／又はゴムの連続混練方法に
おいて用いられる熱可塑性樹脂としては、その種類が特
に限定されるものではないが、通常、ポリプロピレン、
ポリエチレン、プロピレン・エチレン共重合体樹脂、エ
チレン・酢酸ビニル共重合体樹脂等のオレフィン系重合
体及び共重合体樹脂、汎用ポリスチレン樹脂（ＧＰＰ
Ｓ）、耐衝撃性ポリスチレン樹脂（ＨＩＰＳ）、アクリ
ロニトリル・ブタジエン・スチレン共重合体樹脂（ＡＢ
Ｓ）等のスチレン系樹脂、ポリ塩化ビニル系樹脂（ＰＶ
Ｃ）、ポリアセタール樹脂（ＰＡ）、ポリブチレンテレ
フタレート樹脂（ＰＢＴ）、ポリエチレンテレフタレー
ト樹脂（ＰＥＴ）、ポリカーボネート樹脂（ＰＣ）、ポ
リフェニレンエーテル樹脂（ＰＰＥ）等のエンジニアリ
ングプラスチックスを代表的なものとして挙げることが
できる。これらの中でも、特に熱による劣化が大きい、
ポリプロピレン、ポリエチレン等のオレフィン系重合体
及び共重合体樹脂、アクリロニトリル・ブタジエン・ス
チレン共重合体樹脂を用いることが好ましい。これら熱
可塑性樹脂成分には、発明の目的を著しく損なわない範
囲内で後記ゴム成分や、タルク、シリカ、炭酸カルシウ
ム等の無機配合材等の各種の配合材を配合することもで
きる。[I] Raw material thermoplastic resin and / or rubber As the thermoplastic resin used in the continuous kneading method of the thermoplastic resin and / or the rubber of one or more composition using the tandem type kneading device of the present invention, The type is not particularly limited, but usually polypropylene,
Olefin-based polymers and copolymer resins such as polyethylene, propylene / ethylene copolymer resin, ethylene / vinyl acetate copolymer resin, general-purpose polystyrene resin (GPP
S), high impact polystyrene resin (HIPS), acrylonitrile-butadiene-styrene copolymer resin (AB
S) and other styrene resins, polyvinyl chloride resins (PV
Typical examples include engineering plastics such as C), polyacetal resin (PA), polybutylene terephthalate resin (PBT), polyethylene terephthalate resin (PET), polycarbonate resin (PC), and polyphenylene ether resin (PPE). it can. Among these, deterioration due to heat is particularly large,
It is preferable to use olefin polymers and copolymer resins such as polypropylene and polyethylene, and acrylonitrile-butadiene-styrene copolymer resins. To these thermoplastic resin components, various compounding materials such as a rubber component described below and inorganic compounding materials such as talc, silica, calcium carbonate and the like can be compounded within a range that does not significantly impair the object of the invention.

【０００７】また、本発明においては上記熱可塑性樹脂
ばかりでなく、熱可塑性樹脂とゴムとの混合物を処理し
ても良く、また、ゴム単独で処理しても良い。かかるゴ
ムとしてはその種類を特定されることはないが、エチレ
ン・プロピレン共重合体ゴム（ＥＰＲ）、エチレン・プ
ロピレン／ジエン共重合体ゴム（ＥＰＤＭ）に代表され
る様なエチレン、α−オレフィンを主成分とするオレフ
ィン共重合体ゴム、スチレン・ブタジエン共重合ゴム
（ＳＢＲ）、ポリブタジエンゴム（ＢＲ）、アクリロニ
トリル・スチレン・ブタジエン共重合ゴム（ＮＢＲ）等
が用いられる。これらの中でも、特に熱による劣化が大
きい、エチレン、α−オレフィンを主成分とするオレフ
ィン共重合体ゴム、スチレン・ブタジエン共重合ゴムを
用いることが好ましい。In the present invention, not only the thermoplastic resin but also a mixture of the thermoplastic resin and rubber may be treated, or the rubber may be treated alone. The type of the rubber is not specified, but ethylene and α-olefin represented by ethylene / propylene copolymer rubber (EPR) and ethylene / propylene / diene copolymer rubber (EPDM) are used. As the main component, olefin copolymer rubber, styrene / butadiene copolymer rubber (SBR), polybutadiene rubber (BR), acrylonitrile / styrene / butadiene copolymer rubber (NBR) and the like are used. Among these, it is preferable to use ethylene, an olefin copolymer rubber containing an α-olefin as a main component, and a styrene-butadiene copolymer rubber, which are particularly deteriorated by heat.

【０００８】[II] タンデム型混練装置 (1) 構 造 本発明のタンデム型混練装置は、複数の混練機を直列に
連結し、その中の混練機の少なくとも第１段目の混練機
と第２段目の混練機がいずれも二軸の混練機を用いたも
のである。第３段目以降の混練機は用いても、或いは、
用いなくても良い。混練機を用いる場合は二軸の混練機
を用いることが好ましい。第１段目の混練機の前に予備
混練機で予備混練することもできる。[II] Tandem Kneader (1) Structure The tandem kneader of the present invention comprises a plurality of kneaders connected in series, and at least the first kneader and the first kneader of the kneaders therein. Each of the second-stage kneaders uses a biaxial kneader. Even if the kneading machine from the third stage is used, or
It does not have to be used. When using a kneading machine, it is preferable to use a biaxial kneading machine. It is also possible to perform preliminary kneading with a preliminary kneader before the first-stage kneader.

【０００９】(2) 第１段目の混練機 本発明のタンデム型混練装置における第１段目の二軸混
練機としては、米国ファレル社ＦＣＭ型機に類似の高速
二軸混練機であっても良く、また、独国ワーナー社ＺＳ
Ｋ型機に代表される二軸混練押出機、その他のものであ
っても良い。しかし、大容量の混練押出処理能力を得る
ためには、第１段目の混練機のスクリュー又はローター
を４００ｒｐｍ以上の高速回転ができる構造とした前者
の二軸混練機であることが好ましい。該混練機にはモー
ターの回転を減速する減速機が設けられている。本発明
のタンデム型混練装置における第１段混練機の混練強度
を調整するためには、混練機のスクリュー又はローター
の回転速度が可変構造に形成されており、また、樹脂出
口部に樹脂流れの抵抗を調整する絞り機構を備えている
ことが好ましい。また、この第１段目の混練機のスクリ
ュー又はローターは両端支持又は片側支持のいずれであ
っても良い。(2) First-stage kneading machine The first-stage twin-screw kneader in the tandem-type kneading apparatus of the present invention is a high-speed twin-screw kneader similar to the FCM type machine of Pharrell Inc. Also good, German Warner ZS
A twin-screw kneading extruder represented by a K-type machine or the like may be used. However, in order to obtain a large capacity kneading / extruding capacity, the former twin-screw kneader having a structure in which the screw or rotor of the first-stage kneader can rotate at a high speed of 400 rpm or more is preferable. The kneader is provided with a speed reducer for reducing the rotation of the motor. In order to adjust the kneading strength of the first-stage kneading machine in the tandem type kneading device of the present invention, the screw or rotor of the kneading machine has a variable rotational speed, and the resin outlet part has It is preferable to include a diaphragm mechanism for adjusting resistance. The screw or rotor of the first stage kneader may be supported at both ends or supported at one side.

【００１０】(3) 第２段目の混練機 本発明のタンデム型混練装置における第２段目の二軸混
練機としては、米国ファレル社ＦＣＭ型機類似の高速二
軸混練機であっても良く、また、独国ワーナー社ＺＳＫ
型機に代表される二軸混練押出機、その他であっても良
い。しかし、より低い樹脂温度での混練を可能にするた
め、後者のタイプの混練機のスクリュー又はローターを
３００ｒｐｍ以下の低速回転ができる構造とした二軸混
練機であることが好ましい。特に、混練と押出を行なう
二軸混練押出機であることが好ましい。また、第２段目
混練機のスクリュー又はロータの回転速度は可変構造に
形成されていることが好ましい。該混練機にはモーター
の回転を減速する減速機が設けられている。(3) Second-stage kneader The second-stage twin-screw kneader in the tandem-type kneader of the present invention may be a high-speed twin-screw kneader similar to the FCM type machine manufactured by Farrell, USA. Good again, German Warner Company ZSK
A twin-screw kneading extruder represented by a mold machine, or the like may be used. However, in order to enable kneading at a lower resin temperature, it is preferable that the screw or rotor of the latter type of kneader is a twin-screw kneader having a structure capable of low-speed rotation of 300 rpm or less. A twin-screw kneading extruder for kneading and extruding is particularly preferable. Further, it is preferable that the rotation speed of the screw or rotor of the second-stage kneading machine is variable. The kneader is provided with a speed reducer for reducing the rotation of the motor.

【００１１】後者の二軸混練押出機には、スクリュー又
はローターの同方向回転型や、異方向回転型が、或い
は、二本のスクリュー又はローターの噛み合い型や、非
噛み合い型等の組み合わせにより多種類のものが存在す
るが、それら各種のいずれの型であっても良い。また、
この第２段目の混練機のスクリュー又はローターは、両
端支持又は片側支持のいずれでも良いが、溶融樹脂排出
の容易さの観点から片側支持であることが望ましい。し
かし、樹脂温度調整のために、第２段目混練機のスクリ
ュー又はロータの回転速度を可変構造であること、並び
に、出口部に絞り機構を持つていることが好ましい。本
発明のタンデム型混練装置における第１段混練機出口か
ら排出される熱可塑性樹脂及び／又はゴムを第２段混練
機へ円滑に供給するためには、第２段二軸混練機入口に
押し込み機を付加するか、第１段混練機出口と第２段混
練機入口とを密閉する接続管を設けることが望ましい。The latter twin-screw kneading extruder may be a screw or rotor of the same rotation type or a different rotation type, or a combination of two screws or rotors such as a meshing type or a non-meshing type. There are various types, but any of these types may be used. Also,
The screw or rotor of the second stage kneader may be supported at both ends or supported on one side, but is preferably supported on one side from the viewpoint of easy discharge of the molten resin. However, in order to adjust the resin temperature, it is preferable that the rotation speed of the screw or rotor of the second-stage kneading machine is variable and that the outlet has a throttle mechanism. In order to smoothly supply the thermoplastic resin and / or rubber discharged from the outlet of the first-stage kneading machine in the tandem-type kneading device of the present invention to the second-stage kneading machine, push it into the inlet of the second-stage biaxial kneading machine. It is desirable to add a machine or provide a connecting pipe for sealing the outlet of the first-stage kneader and the inlet of the second-stage kneader.

【００１２】本発明のタンデム型混練装置における第２
段目二軸混練押出機の熱可塑性樹脂及び／又はゴムをペ
レット化する方法としては、ストランド方式、ホットカ
ット方式、或いは、水中カット方式のいずれであっても
良く、何等制約されるところでない。また、ペレット化
の方式に応じて、ダイス上流に高い樹脂圧力を要すれ
ば、必要な昇圧のため、第２段目の混練機の下流側に更
にギヤポンプを結合することも可能である。更に、製品
中の異物を除去するために、ダイス上流側に金属フィル
ターを装着することもできる。また、必要に応じ、第２
段目混練機の入口又は途中の開口部の位置に一部の原材
料を追加的に投入すること、或いは、ガス分を逃すため
のベント口を設けることも可能である。Second in the tandem type kneading apparatus of the present invention
The method of pelletizing the thermoplastic resin and / or the rubber of the second stage twin-screw kneading extruder may be any of a strand method, a hot cut method, and an underwater cut method, and is not limited in any way. Further, if a high resin pressure is required upstream of the die according to the pelletizing method, it is possible to further connect a gear pump downstream of the second-stage kneading machine in order to increase the required pressure. Further, in order to remove foreign matters in the product, a metal filter can be mounted on the upstream side of the die. Also, if necessary, the second
It is also possible to additionally add a part of raw materials to the entrance of the stage kneading machine or the position of the opening in the middle, or to provide a vent for letting out a gas component.

【００１３】[III] 混練方法 (1) スクリュー又はローターの回転速度 本発明のタンデム型混練装置の混練操作方法について
は、第１段混練機のスクリュー又はローター回転速度
は、２００ｒｐｍ以上、１，０００ｒｐｍ以下の範囲
内、好ましくは３００ｒｐｍ以上、９００ｒｐｍ以下の
範囲内での高速の回転で溶融混練が実施されることが好
ましい。また、第２段目の混練機のスクリュー又はロー
ターの回転速度は、２０ｒｐｍ以上、４００ｒｐｍ以下
の範囲内、好ましくは４０ｒｐｍ以上、２００ｒｐｍ以
下の範囲内での低速の回転で溶融混練が実施されること
が好ましい。また、第２段目混練機のスクリュー又はロ
ータの回転速度は可変構造に形成されており、第２段目
混練機のスクリュー又はロータの回転速度は第１段目混
練機のスクリュー又はロータの回転速度の二分の一（５
０％）以下、好ましくは１０〜４０％の範囲内、の速度
で溶融混練することが好ましい。第１段混練機のスクリ
ュー又はローターの回転速度が上記範囲未満では、原料
供給能力が過少で必要な能力が得られず、著しく不経済
である。一方、上記範囲超過の高速回転の場合、回転に
伴なうスクリュー及びローターの振れにより、バレル又
はシリンダーを損傷する虞がある。また、第２段目混練
機のスクリュー又はローター回転速度が上記範囲を超え
る場合には、樹脂温度が過度に上昇し、樹脂を熱劣化さ
せて目的の品質が得られない。一方、上記範囲未満の場
合は溶融した樹脂の送り能力が著しく低下するので好ま
しくない。また、第２段目混練機のスクリュー又はロー
タの回転速度と第１段目混練機のスクリュー又はロータ
の回転速度との割合が上記範囲を超えるとやはり送り能
力と樹脂温度上昇の問題が生じる。[III] Kneading Method (1) Rotational Speed of Screw or Rotor Regarding the kneading operation method of the tandem type kneading apparatus of the present invention, the rotation speed of the screw or rotor of the first stage kneading machine is 200 rpm or more and 1,000 rpm. It is preferable that the melt-kneading is carried out at a high speed rotation within the following range, preferably 300 rpm or more and 900 rpm or less. The rotation speed of the screw or rotor of the second stage kneader is within the range of 20 rpm or more and 400 rpm or less, preferably 40 rpm or more and 200 rpm or less, and the melt kneading is performed at a low speed. Is preferred. Further, the rotation speed of the screw or rotor of the second-stage kneader is variable, and the rotation speed of the screw or rotor of the second-stage kneader is the same as that of the screw or rotor of the first-stage kneader. Half the speed (5
It is preferable to melt-knead at a rate of 0%) or less, preferably in the range of 10 to 40%. If the rotation speed of the screw or rotor of the first stage kneader is less than the above range, the raw material supply capacity is too small to obtain the necessary capacity, which is extremely uneconomical. On the other hand, in the case of high-speed rotation exceeding the above range, the barrel or the cylinder may be damaged due to the vibration of the screw and rotor accompanying the rotation. When the screw or rotor rotation speed of the second-stage kneader exceeds the above range, the resin temperature rises excessively and the resin is thermally deteriorated, so that the desired quality cannot be obtained. On the other hand, if it is less than the above range, the feeding ability of the molten resin is significantly lowered, which is not preferable. Further, if the ratio of the rotation speed of the screw or rotor of the second-stage kneader to the rotation speed of the screw or rotor of the first-stage kneader exceeds the above range, the problems of the feed ability and the resin temperature rise still occur.

【００１４】(2) 混練強度の調整 本発明のタンデム型混練装置の操作方法において、混練
強度の調整は特定の狭い範囲に限定されることはない
が、第１段混練部において可塑化、溶融を終了させる様
に、また、第２段目の混練機においては熱可塑性樹脂又
はゴムの温度が過度に上昇して得られる製品の物性を劣
化させない様に、それぞれのスクリュー又はローターの
回転速度及び絞り機構のオリフィスプレートの開度調整
等について応用的操作が推奨される。(2) Adjustment of Kneading Strength In the operation method of the tandem type kneading apparatus of the present invention, the adjustment of kneading strength is not limited to a specific narrow range, but plasticization and melting in the first stage kneading section are performed. In order to prevent the deterioration of the physical properties of the product obtained by excessively increasing the temperature of the thermoplastic resin or rubber in the second stage kneader, the rotation speed of each screw or rotor and Applied operation is recommended for adjusting the opening of the orifice plate of the throttle mechanism.

【００１５】(3) 操作方法 次に、本発明の操作方法を図面に基づき具体的に説明す
る。図１は、ファレル社型高速二軸混練機を第１段目の
混練機１として用い、ワーナー社型二軸混練押出機を第
２段目の混練機２として用いて組み合わせた本発明実施
例にて用いたタンデム型混練装置３を表わす。(3) Operating Method Next, the operating method of the present invention will be specifically described with reference to the drawings. FIG. 1 shows an embodiment of the present invention in which a high speed twin screw kneader of the Farrell type is used as the first stage kneader 1 and a Warner type twin screw kneading extruder is used as the second stage kneader 2. The tandem type kneading device 3 used in 1. is shown.

【００１６】図１において、第１段目の混練機１に供給
される熱可塑性樹脂又はゴムの原材料４は、流量調節式
原材料供給機５からシュート６を経て、第１段目の混練
機１の入口部１ａに落下することにより第１段目の混練
機１に供給される。次に、この原材料４は、第１段目の
混練機１のモーター７の回転を減速機８により減速させ
て、第１段目の混練機１のダイス９の内部のスクリュー
１０を回転させ、該スクリュー１０の回転により圧縮さ
れながら，ローター部（混練ゾーン）１１に送られて、
ここで可塑化される。第１段目混練機１での混練強度
は、混練機１の出口部１ｂの絞り機構１２のオリフィス
プレート１２ａの開度によって調整される。第１段目混
練機１を出たロープ状の熱可塑性樹脂又はゴムの原料４
は、第１段混練機出口部１ｂと第２段混練機入口部２ａ
とを密閉する接続管であるシュート１３を経て第２段目
の混練機２に供給される。この時、粘度が高く、固い熱
可塑性樹脂樹脂又はゴムの様な原材料４の場合には押し
込み機１４を作動させて、食い込みを助けることができ
る。In FIG. 1, the thermoplastic resin or rubber raw material 4 supplied to the first-stage kneading machine 1 passes from a flow rate-adjusting raw-material feeding machine 5 to a chute 6 and then to the first-stage kneading machine 1 It is supplied to the kneading machine 1 of the first stage by dropping into the inlet portion 1a. Next, in this raw material 4, the rotation of the motor 7 of the first-stage kneader 1 is reduced by the speed reducer 8 to rotate the screw 10 inside the die 9 of the first-stage kneader 1, While being compressed by the rotation of the screw 10, it is sent to the rotor section (kneading zone) 11,
It is plasticized here. The kneading strength in the first-stage kneading machine 1 is adjusted by the opening degree of the orifice plate 12a of the squeezing mechanism 12 at the outlet 1b of the kneading machine 1. Raw material 4 of rope-shaped thermoplastic resin or rubber leaving the first-stage kneading machine 1
Is the first-stage kneading machine outlet 1b and the second-stage kneading machine inlet 2a.
It is supplied to the second-stage kneading machine 2 through a chute 13 which is a connecting pipe for sealing the and. At this time, when the raw material 4 has a high viscosity and is hard, such as a thermoplastic resin or rubber, the pusher 14 can be operated to help the bite.

【００１７】この第２段目の混練機２に供給された熱可
塑性樹脂又はゴムの原料４は、第２段目の混練機２のモ
ーター１５の回転を減速機１６により減速させて、第２
段目の混練機２のダイス１７の内部のスクリュー１８を
回転させ、該スクリュー１８の回転により圧縮されなが
ら，混練ゾーン１９に送られる。そして、この混練ゾー
ン１９で樹脂温度が過度に上昇しないように注意しなが
ら必要な混練を受ける。混練された熱可塑性樹脂又はゴ
ムの原料４は、ダイス１７の出口１７ａを経て、この第
２段目の混練機２を出た後、ペレタイザー２０のロータ
ーによりカッティングされてペレットとなる。The raw material 4 of the thermoplastic resin or rubber supplied to the second-stage kneading machine 2 reduces the rotation of the motor 15 of the second-stage kneading machine 2 by the speed reducer 16 to generate the second
The screw 18 inside the die 17 of the kneading machine 2 in the first stage is rotated, and is sent to the kneading zone 19 while being compressed by the rotation of the screw 18. Then, in the kneading zone 19, necessary kneading is carried out while being careful not to raise the resin temperature excessively. The kneaded thermoplastic resin or rubber raw material 4 passes through the outlet 17a of the die 17, exits from the second-stage kneader 2, and is then cut into pellets by the rotor of the pelletizer 20.

【００１８】本発明の混練方法における混練温度は、熱
可塑性樹脂又はゴムの溶融温度以上の温度であり、しか
も、二段目混練機での最高温度は、通常、３５０℃未満
の温度であるが、劣化を防止するために低い温度の方が
好ましい。また、滞留時間は、例えば、第１段目混練機
１、第２段目混練機２が各々５秒〜５分程度であるが、
全体の混練が過剰とならないように第１段目混練機１の
スクリュー７並びに混練ゾーン１１は余り長くしない方
が良い。The kneading temperature in the kneading method of the present invention is a temperature above the melting temperature of the thermoplastic resin or rubber, and the maximum temperature in the second stage kneader is usually below 350 ° C. However, a lower temperature is preferable to prevent deterioration. The residence time is, for example, about 5 seconds to 5 minutes for the first-stage kneading machine 1 and the second-stage kneading machine 2, respectively.
The screw 7 and the kneading zone 11 of the first-stage kneading machine 1 should not be too long so that the whole kneading does not become excessive.

【００１９】[0019]

【実施例】以下に示す実施例及び比較例によって、本発
明を更に具体的に説明する。 実施例１ （株）神戸製鋼所製２ＦＣＭ（スクリュー口径５０ｍ
ｍ、ファレル社型高速二軸混練機）を第１段目の混練機
とし、（株）日本製鋼所製ＴＥＸ４４（スクリュー口径
４４ｍｍ、ワーナー社型二軸混練押出機）を第２段目の
混練押出機として用い、これら第１段目の混練機と第２
段目の混練押出機を直列に連結したタンデム型型の混練
装置を用いて、この第１段目の混練機に、１９０℃、
２．１６ｋｇ荷重におけるメルトフローレート（ＭＦ
Ｒ）が０．０８ｇ／１０分の高粘度のＨＤＰＨ（高密度
ポリエチレン樹脂）を７０ｋｇ／時間の供給量、スクリ
ュー回転速度８００ｒｐｍで混練し、次いで、第２段目
の混練押出機でスクリュー回転速度１５０ｒｐｍで混練
し、更に、第１段目の混練機の滞留時間が長くならない
ように注意して混練した。その結果、混練押出機出口の
樹脂温度は２３０℃であり、混練物は熱による劣化が全
く見られなかった。The present invention will be described more specifically with reference to the following examples and comparative examples. Example 1 Kobe Steel, Ltd. 2FCM (screw diameter 50m
m, Farrell type high-speed twin-screw kneader) as the first stage kneader, and TEX44 (screw caliber 44 mm, Warner-type twin-screw extruder) manufactured by Japan Steel Works, Ltd. as the second stage kneader. Used as an extruder, these first stage kneader and second stage
Using a tandem type kneading machine in which the kneading extruders of the first stage are connected in series, 190 ° C. is added to the kneading machine of the first stage.
2. Melt flow rate at 16 kg load (MF
(R) 0.08 g / 10 min of high viscosity HDPH (high density polyethylene resin) is kneaded at a feed rate of 70 kg / hour and a screw rotation speed of 800 rpm, and then the second rotation kneading extruder is used to rotate the screw rotation speed. The kneading was carried out at 150 rpm, and the kneading was carried out carefully so that the residence time of the first-stage kneading machine would not become long. As a result, the resin temperature at the exit of the kneading extruder was 230 ° C., and the kneaded product was not deteriorated at all by heat.

【００２０】比較例１ （株）日本製鋼所製ＴＥＸ４４（スクリュー口径４４ｍ
ｍ、ウエルナータイプ二軸混練押出機）を用い、１９０
℃、２．１６ｋｇ荷重におけるＭＦＲが０．０８ｇ／１
０分の高粘度の高密度ポリエチレン樹脂（ＨＤＰＨ）
を、７０ｋｇ／時間の供給量、スクリュー回転速度３０
０ｒｐｍで混練した。その結果、混練機出口の樹脂温度
は３２０℃であり、得られた混練物をＭＦＲ計にて測定
したところ、ＭＦＲが０．９９ｇ／１０分、原料とのＭ
ＦＲ差が０．１１ｇ／１０分であっことから、熱により
劣化が起こっていることが判明した。COMPARATIVE EXAMPLE 1 TEX44 (screw diameter 44 m, manufactured by Japan Steel Works, Ltd.)
m, Werner type twin-screw kneading extruder)
MFR at ℃ and 2.16kg load is 0.08g / 1
0 minute high viscosity high density polyethylene resin (HDPH)
At a feed rate of 70 kg / hour and a screw rotation speed of 30
Kneading was performed at 0 rpm. As a result, the resin temperature at the exit of the kneader was 320 ° C., and when the obtained kneaded product was measured by an MFR meter, the MFR was 0.99 g / 10 minutes and the M
Since the FR difference was 0.11 g / 10 minutes, it was found that the deterioration was caused by heat.

【００２１】比較例２ 比較例１において、樹脂の供給量を２０ｋｇ／時間に低
下させ、スクリュー回転速度を１１０ｒｐｍで混練した
以外は比較例１と同じ条件で実施した。その結果、混練
機出口の樹脂温度は２６０℃であり、得られた混練物を
ＭＦＲ計にて測定したところ、原料とのＭＦＲ差が０．
０２ｇ／１０分であっことから混練物の熱による劣化は
無かった。Comparative Example 2 Comparative Example 1 was carried out under the same conditions as Comparative Example 1 except that the resin supply rate was reduced to 20 kg / hour and the screw rotation speed was 110 rpm. As a result, the resin temperature at the outlet of the kneading machine was 260 ° C., and when the obtained kneaded product was measured with an MFR meter, the MFR difference from the raw material was 0.
Since it was 02 g / 10 minutes, there was no deterioration of the kneaded product due to heat.

【００２２】比較例３ 比較例１において、樹脂の供給量を７０ｋｇ／時間のま
ま、スクリュー回転速度のみを低下させて混練した以外
は比較例１と同じ条件で実施した。その結果、過負荷の
ために、電動機及び混練機が停止し、混練機の運転を継
続して行なうことができなかった。Comparative Example 3 Comparative Example 1 was carried out under the same conditions as Comparative Example 1, except that the resin supply rate was kept at 70 kg / hour and kneading was carried out by decreasing only the screw rotation speed. As a result, the electric motor and the kneader were stopped due to overload, and the kneader could not be continuously operated.

【００２３】比較例４ （株）神戸製鋼所製２ＦＣＭ（スクリュー口径５０ｍ
ｍ、ファレルタイプ高速二軸混練機）を用い、１９０
℃、２．１６ｋｇ荷重におけるＭＦＲが０．０８ｇ／１
０分の高粘度のＨＤＰＨ（高密度ポリエチレン樹脂）
を、２０ｋｇ／時間の供給量、スクリュー回転速度８０
０ｒｐｍで混練した。その結果、混練機出口の樹脂温度
は３１５℃であり、得られた混練物をＭＦＲ計にて測定
したところ、原料とのＭＦＲ差が０．２０ｇ／１０分で
あっことから、やはり熱により劣化が見られることが判
明した。Comparative Example 4 Kobe Steel, Ltd. 2FCM (screw diameter 50m
m, Farrell type high speed twin-screw kneader)
MFR at ℃ and 2.16kg load is 0.08g / 1
0 minute high viscosity HDPH (high density polyethylene resin)
A feed rate of 20 kg / hour and a screw rotation speed of 80
Kneading was performed at 0 rpm. As a result, the resin temperature at the exit of the kneading machine was 315 ° C., and when the obtained kneaded product was measured with an MFR meter, the MFR difference with the raw material was 0.20 g / 10 minutes, and thus the deterioration was also caused by heat. Turned out to be seen.

【００２４】比較例５ 実施例１のタンデム型の混練装置において、第１段目の
混練機のスクリュー回転速度を４００ｒｐｍで混練し、
次いで、第２段目の混練押出機のスクリュー回転速度も
４００ｒｐｍで混練した以外は実施例１に記載の通り実
施した。その結果、混練押出機出口の樹脂温度は３０５
℃まで上昇した。得られた混練物をＭＦＲ計にて測定し
たところ、原料とのＭＦＲ差が０．１４ｇ／１０分であ
っことから、熱により劣化が起こっていることが判明し
た。Comparative Example 5 In the tandem type kneading apparatus of Example 1, kneading was carried out at a screw rotation speed of 400 rpm of the first-stage kneading machine,
Then, the second step of kneading extruder was carried out as described in Example 1 except that the screw rotation speed was also 400 rpm. As a result, the resin temperature at the exit of the kneading extruder was 305.
° C. When the obtained kneaded product was measured with an MFR meter, the difference in MFR from the raw material was 0.14 g / 10 minutes, which revealed that deterioration was caused by heat.

【００２５】比較例６ 実施例１のタンデム型の混練装置において、第１段目の
混練機のスクリュー回転速度を１５０ｒｐｍ、第２段目
の混練押出機のスクリュー回転速度を５００ｒｐｍに変
更して実施したところ、樹脂原料は３０ｋｇ／時間しか
供給できず、しかも、混練押出機出口の樹脂温度は３４
０℃まで上昇した。得られた混練物をＭＦＲ計にて測定
したところ、原料とのＭＦＲ差が０．３１ｇ／１０分で
あっことから、熱による劣化が著しかったことが判明し
た。Comparative Example 6 In the tandem type kneading apparatus of Example 1, the screw rotation speed of the first-stage kneading machine was changed to 150 rpm, and the screw rotation speed of the second-stage kneading extruder was changed to 500 rpm. As a result, the resin raw material could be supplied only at 30 kg / hour, and the resin temperature at the exit of the kneading extruder was 34
The temperature rose to 0 ° C. When the obtained kneaded product was measured with an MFR meter, the MFR difference from the raw material was 0.31 g / 10 minutes, which revealed that the deterioration due to heat was significant.

【００２６】[0026]

【発明の効果】このような本発明のタンデム型の混練装
置及びそれを用いた熱可塑性樹脂及び／又はゴムの混練
方法は、混練時の剪断力による発熱を少なくし、熱劣化
による物性の低下を抑制し、混練押出処理能力の低下を
伴なわずに、低温混練特性に優れた熱可塑性樹脂及び／
又はゴムの配合物を製造することができる。The tandem type kneading apparatus of the present invention and the method for kneading a thermoplastic resin and / or rubber using the tandem type kneading apparatus reduce heat generation due to shearing force during kneading, and deteriorate physical properties due to thermal deterioration. And a thermoplastic resin excellent in low-temperature kneading properties and / or without lowering kneading / extrusion processing capability.
Alternatively, a rubber compound can be produced.

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

【図１】図１は、ファレル社型高速二軸混練機を第１段
目とし、ワーナー社型二軸混練押出機を第２段目とし、
両者を直列に連結した本発明実施例のタンデム型の混練
装置の概略図である。FIG. 1 shows a Farrell type high-speed twin-screw kneader as the first stage and a Warner double-screw kneading extruder as the second stage.
It is the schematic of the tandem-type kneading apparatus of the Example of this invention which connected both in series.

【符号の説明】[Explanation of symbols]

１ 第１段目の混練機（ファレル社型高速二軸混練機） １ａ 入口部 １ｂ 出口部 ２ 第２段目の混練機（ワーナー社型二軸混練押出機） ２ａ 入口部 ３ タンデム型混練装置 ４ 原材料（熱可塑性樹脂又はゴム） ５ 流量調節式原材料供給機 ６ シュート ７ モーター ８ 減速機 ９ ダイス １０ スクリュー １１ ローター部（混練ゾーン） １２ 絞り機構 １２ａ オリフィスプレート １３ シュート １４ 押し込み機 １５ スクリュー １６ 混練ゾーン １７ ダイス １７ａ 出口 １８ スクリュー １９ 混練ゾーン ２０ ペレタイザー 1 1st stage kneader (Farrell high-speed twin-screw kneader) 1a inlet 1b exit 2 second-stage kneader (Warner twin-screw extruder) 2a inlet 3 tandem kneader 4 Raw materials (thermoplastic resin or rubber) 5 Flow rate control raw material feeder 6 Chute 7 Motor 8 Speed reducer 9 Dies 10 Screw 11 Rotor part (kneading zone) 12 Drawing mechanism 12a Orifice plate 13 Chute 14 Pusher 15 Screw 16 Kneading zone 17 Die 17a Exit 18 Screw 19 Kneading Zone 20 Pelletizer

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】タンデム型混練装置において、少なくとも
第１段目及び第２段目の混練機が二軸混練機であること
を特徴とするタンデム型混練装置。1. A tandem-type kneading apparatus, wherein at least the first-stage kneading machine and the second-stage kneading machine are biaxial kneading machines. 【請求項２】第１段目混練機のスクリュー又はローター
が両端支持又は片側支持であり、第２段目混練機のスク
リュー又はローターが片側支持である請求項１に記載の
タンデム型混練装置。2. The tandem-type kneading apparatus according to claim 1, wherein the screw or rotor of the first-stage kneader supports both ends or one side, and the screw or rotor of the second-stage kneader supports one side. 【請求項３】混練装置が、１種類又は２種類以上の組成
の熱可塑性樹脂及び／又はゴムの連続混練用である請求
項１又は２に記載のタンデム型混練装置。3. The tandem type kneading device according to claim 1, wherein the kneading device is for continuous kneading of thermoplastic resins and / or rubbers having one or more compositions. 【請求項４】タンデム型混練装置を用いて連続混練する
熱可塑性樹脂及び／又はゴムの混練方法において、少な
くとも第１段目及び第２段目の混練機に二軸混練機を用
いると共に、前記第１段目混練機のスクリュー又はロー
ターの回転速度を２００〜１，０００ｒｐｍ、第２段目
混練機のスクリュー又はローターの回転速度を２０〜４
００ｒｐｍの範囲内とし、かつ、第２段目混練機のスク
リュー又はローターの回転速度を第１段目混練機のスク
リュー又はローターの回転速度の二分の一以下の速度で
混練することを特徴とする熱可塑性樹脂及び／又はゴム
の混練方法。4. A method for kneading a thermoplastic resin and / or rubber, which is continuously kneaded using a tandem type kneading device, wherein at least a first-stage kneader and a second-stage kneader are biaxial kneaders, and The rotation speed of the screw or rotor of the first-stage kneader is 200 to 1,000 rpm, and the rotation speed of the screw or rotor of the second-stage kneader is 20 to 4
It is characterized in that it is within a range of 00 rpm and the rotation speed of the screw or rotor of the second stage kneader is one half or less of the rotation speed of the screw or rotor of the first stage kneader. Method for kneading thermoplastic resin and / or rubber. 【請求項５】第２段目の混練機に二軸混練押出機を用い
ると共に、該二軸混練押出機又はその下流に設置したギ
ヤポンプで熱可塑性樹脂及び／又はゴムの造粒成形を行
なう請求項４に記載の熱可塑性樹脂及び／又はゴムの混
練方法。5. A twin-screw kneading extruder is used as the second-stage kneader, and the thermoplastic resin and / or rubber is granulated by the twin-screw kneading extruder or a gear pump installed downstream thereof. Item 5. A method for kneading a thermoplastic resin and / or rubber according to Item 4.
JP8054842A 1996-03-12 1996-03-12 Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same Pending JPH09239726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8054842A JPH09239726A (en) 1996-03-12 1996-03-12 Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8054842A JPH09239726A (en) 1996-03-12 1996-03-12 Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same

Publications (1)

Publication Number Publication Date
JPH09239726A true JPH09239726A (en) 1997-09-16

Family

ID=12981878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8054842A Pending JPH09239726A (en) 1996-03-12 1996-03-12 Tandem type kneading apparatus and kneading of thermoplastic resin and/or rubber using the same

Country Status (1)

Country Link
JP (1) JPH09239726A (en)

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JP2001150429A (en) * 1999-11-25 2001-06-05 Japan Polychem Corp Apparatus and method for alleviating fish eye of polyolefin
JP2004294736A (en) * 2003-03-26 2004-10-21 Seiko Epson Corp Toner and method for manufacturing toner
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JP2006341478A (en) * 2005-06-09 2006-12-21 Mitsubishi Heavy Ind Ltd Continuous kneader and kneading system equipped with kneader
US8802752B2 (en) 2006-08-09 2014-08-12 Ppg Industries Ohio, Inc Process for preparing granules of pigments by means of double extrusion
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USRE48079E1 (en) 2006-08-09 2020-07-07 Ppg Industries Ohio, Inc. Process for preparing granules of pigments by means of double extrusion
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JP2014133367A (en) * 2013-01-10 2014-07-24 Ishikawa Toki Tekkosho:Kk Extrusion molding machine, and extrusion molding method
CN103909640A (en) * 2014-04-22 2014-07-09 成都彩星科技实业有限公司 Extruding device for preventing coating block from dropping in rollers
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CN103934945A (en) * 2014-04-22 2014-07-23 成都彩星科技实业有限公司 Reliable, convenient and rapid-cooling extruding mechanism
US20180200975A1 (en) * 2014-10-17 2018-07-19 Sumitomo Rubber Industries, Ltd. Method for producing pneumatic tyre
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