JP3730818B2 - Twin screw extruder with screw having crushing mechanism - Google Patents

Twin screw extruder with screw having crushing mechanism Download PDF

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Publication number
JP3730818B2
JP3730818B2 JP29365399A JP29365399A JP3730818B2 JP 3730818 B2 JP3730818 B2 JP 3730818B2 JP 29365399 A JP29365399 A JP 29365399A JP 29365399 A JP29365399 A JP 29365399A JP 3730818 B2 JP3730818 B2 JP 3730818B2
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Japan
Prior art keywords
screw
fin
fins
crushing mechanism
twin
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Expired - Fee Related
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JP29365399A
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Japanese (ja)
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JP2001113523A (en
Inventor
伸久 小林
幸生 今村
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Japan Steel Works Ltd
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Japan Steel Works Ltd
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    • 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
    • B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • 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
    • B29B7/30—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
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • 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
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw 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
    • B29C48/565—Screws having projections other than the thread, e.g. pins
    • 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

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

Description

【０００１】
【発明の属する技術分野】
本発明は、破砕機構を有するスクリュを備えた二軸押出機に関し、特に、ミキサー供給部にリードがなくかつスクリュ軸に平行に設けられた複数のフィンを設けることにより、種々の粒子径を有する粒原料を粉砕又は破砕し、液体添加剤等を均一に原料に分散及び含浸させるための新規な改良に関する。
【０００２】
【従来の技術】
従来、用いられていたこの種の種々の粒子径（０．１〜３ｍｍ）の広範囲の顆粒状の粒原料に液体添加剤等を混練させるためのスクリュの場合、図３で示されるフライト１を有するスクリュ２を二軸として用いて混練し、異方向非噛み合い、又は、同方向噛み合いの構成の押出機によって液体添加剤を原料に対して分散及び含浸させるようにしていた。
【０００３】
【発明が解決しようとする課題】
従来のスクリュは、以上のように構成されていたため、次のような課題が存在していた。
すなわち、原料の性状が０．１〜３ｍｍ粒子径程度の広範囲にあるような顆粒状の粒原料の場合、図３で示される通常のフルフライトスクリュでは原料を砕く作用がないため、表面積の異なる各粒子に同一濃度で液体添加剤等を均一に分散及び含浸させることは難しく、このため、不均一な物性の製品しかえられず、原料性状を変えない限りこの技術的困難を克服することは極めて困難であった。
【０００４】
本発明は、以上のような課題を解決するためになされたもので、特に、ミキサー供給部にリードがなくかつスクリュ軸に平行に設けられた複数のフィンを設けることにより、種々の粒子径を有する粒原料を粉砕又は破砕し、液体添加剤等を均一に原料に分散及び含浸させるようにした破砕機構を有するスクリュを備えた二軸押出機を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明による破砕機構を有するスクリュを備えた二軸押出機は、原料ホッパから粒原料を供給するバレル内に設けられ、上流側にフライト部を形成したミキサー供給部(3)を有すると共に、前記ミキサー供給部の下流側に混練部及び排出部を直列状に有し、一対で用いられるスクリュを用い、前記スクリュの前記フライト部の上流側のみに軸方向及び回転方向に沿って所定の間隔で配設されリードのない複数のフィンを有し、前記各フィンの前記軸方向において互いに隣接する前記各フィン同志は、前記回転方向に沿って互いに異なる角度位置に配設され、前記原料ホッパから供給された種々の粒子径の粒原料は前記フィンと前記バレルの内壁間に案内されて前記フィンの外面のエッジによって細かく粉砕又は破砕された後、前記フィンの下流側の前記ミキサー供給部の前記フライト部を経て前記混練部及び排出部へ搬送されるようにした構成であり、また、前記各フィンの幅は０．０５〜０．１５Ｄ（Ｄ＝スクリュの直径）であり、前記各フィンの軸方向長さ(L)は０．１〜０．５Ｄであり、前記バレルの内壁と前記フィンとの隙間(G)は０．５〜１．５ｍｍに設定されている構成であり、また、前記各フィンはスクリュ軸円周方向に４〜８個形成されて配設されている構成であり、また、前記粒子径は、０．１〜３ｍｍである構成である。
【０００６】
【発明の実施の形態】
以下、図面と共に本発明による破砕機構を有するスクリュを備えた二軸押出機の好適な実施の形態について説明する。なお、従来例と同一又は同等部分については同一符号を用いて説明する。
図１において符号１，１Ａ，１Ｂで示されるものは、バレル８内に設けられた一対のスクリュ２，２Ａの上流側から下流側へ向けて直列状に配列されたミキサー供給部３、混練部４及び排出部５に各々設けられたフライト部であり、前記ミキサー供給部３のフライト部１の上流側のみには、スクリュ軸方向でかつ回転方向に所定の間隔でリードのない複数のフィン１０が径方向に突出して形成されている。
【０００７】
前記各フィン１０の長手方向は、スクリュ２，２Ａのスクリュ軸方向と完全に平行で、スクリュ２，２Ａの原料送りのリードを全く有していない構成であり、各フィン１０の幅Ｗは０．０５〜０．１５Ｄ（Ｄはスクリュ２，２Ａの直径）に設定されていると共に、各フィン１０の軸方向長さＬは０．１〜０．５Ｄ（Ｄはスクリュ２，２Ａの直径）に設定されている。さらに、各フィン１０とバレル８の内壁８ａとの隙間Ｇは０．５〜１．５ｍｍに設定されており、各フィン１０は、スクリュ軸円周方向に沿って合計で４〜８個形成されていると共に、上流側から下流側へ向けてスクリュ軸方向で見た場合に位相がずれるように配設されている。
すなわち、前記各フィン１０の前記軸方向において互いに隣接する前記各フィン１０同志は、図１に示されるように、前記回転方向に沿って互いに異なる角度位置に配設されている。
【０００８】
次に、動作について述べる。まず、図１の状態で、バレル８の上流側の原料ホッパ（図示せず）から原料性状が０．１〜３ｍｍ程度の広範囲の粒子径を有する粒原料（図示せず）をバレル８内に供給すると、粒原料はミキサー供給部３の各フィン１０とバレル８の内壁８ａ間に案内され、各フィン１０の外面のエッジによって細かく粉砕又は破砕されてある一定の粒子径以下（例えば１ｍｍ）となる。そのため、バレル８内に供給された図示しない液体添加剤等は、粉砕又は破砕された後の原料が前記フィン１０の下流側の前記ミキサー供給部３の前記フライト部１、混練部４及び排出部５に搬送されていく中でほぼ均一に分散及び含浸されかつ同一濃度での含浸が達成されて、均一な物性で高品質な製品を確保することができる。
なお、本出願人が種々実験の結果、前記フィン１０の幅Ｗが０．０５ｍｍよりも小さい場合には、ショートパスが多くなり、粉砕及び破砕効果はなく、さらに、軸方向長さＬは０．２Ｄ以上の場合には押出量が出なくなることが判明した。
【０００９】
また、前述の図１で示される構成の場合には、各スクリュ２，２Ａが互いに異方向に回転して互いに噛み合わない異方向非噛み合い構造であるが、例えば、図２で示されるように、各スクリュ２，２Ａが互いに同方向に回転して互いに噛み合う同方向噛み合い構造とした場合も、図１の構成と同等の作用効果を得ることができ、図１と同等部分には同一符号を付し、その説明は省略している。なお、図２の形態における混練部４は、図１の形態と異なり、周知の多数のニーディングディスク２０を水平方向に積層させた場合を示している。
【００１０】
【発明の効果】
本発明による破砕機構を有するスクリュを備えた二軸押出機は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、一対のスクリュのミキサー供給部のフライトの上流側に、リードのない複数のフィンが形成されているため、この各フィンとバレルの内壁との間に案内された粒原料は、粉砕又は破砕されて一定の粒子径以下とすることができ、液体添加剤を均一に原料に分散及び含浸させることができ、均一な物性の高品質製品を得ることができる。
【図面の簡単な説明】
【図１】 本発明による破砕機構を有するスクリュを備えた二軸押出機を示す構成図である。
【図２】 図１の他の形態を示す構成図である。
【図３】 従来のスクリュを示す要部の斜視図である。
【符号の説明】
１ フライト部
３ ミキサー供給部
４ 混練部
５ 排出部
８ バレル
８ａ 内壁
１０ フィン
Ｌ 軸方向長さ
Ｇ 隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a twin-screw extruder provided with a screw having a crushing mechanism, and in particular, has a variety of particle diameters by providing a plurality of fins provided in a mixer supply section without a lead and parallel to the screw shaft. The present invention relates to a novel improvement for pulverizing or crushing a granular raw material and uniformly dispersing and impregnating the liquid additive and the like in the raw material.
[0002]
[Prior art]
In the case of a screw for kneading a liquid additive or the like in a wide range of granular granular materials having various particle sizes (0.1 to 3 mm) of this type that have been used conventionally, the flight 1 shown in FIG. The screw 2 is kneaded using two shafts, and the liquid additive is dispersed and impregnated into the raw material by an extruder having a different direction non-engagement or same direction engagement.
[0003]
[Problems to be solved by the invention]
Since the conventional screw is configured as described above, the following problems exist.
That is, in the case of a granular granular raw material whose properties are in a wide range of about 0.1 to 3 mm particle diameter, the normal full flight screw shown in FIG. It is difficult to uniformly disperse and impregnate liquid additives etc. at the same concentration in each particle, so that only products with non-uniform physical properties can be obtained, and it is extremely difficult to overcome this technical difficulty unless the raw material properties are changed. It was difficult.
[0004]
The present invention has been made in order to solve the above-described problems, and in particular, by providing a plurality of fins provided in the mixer supply unit without leads and parallel to the screw shaft, various particle sizes can be obtained. An object of the present invention is to provide a twin-screw extruder provided with a screw having a crushing mechanism in which a granular raw material is pulverized or crushed and a liquid additive or the like is uniformly dispersed and impregnated in the raw material.
[0005]
[Means for Solving the Problems]
A twin-screw extruder provided with a screw having a crushing mechanism according to the present invention is provided in a barrel for supplying granular raw material from a raw material hopper, and has a mixer supply part (3) in which a flight part is formed on the upstream side, and A kneading part and a discharge part are arranged in series on the downstream side of the mixer supply part, and a pair of screws are used , and only on the upstream side of the flight part of the screw at a predetermined interval along the axial direction and the rotational direction. A plurality of fins arranged and having no leads, and the fins adjacent to each other in the axial direction of the fins are arranged at different angular positions along the rotation direction and supplied from the raw material hopper The granulated raw materials having various particle sizes are guided between the fin and the inner wall of the barrel and finely crushed or crushed by the edge of the outer surface of the fin. And the width of each fin is 0.05 to 0.15D (D = diameter of the screw). The axial length (L) of each fin is 0.1 to 0.5 D, and the gap (G) between the inner wall of the barrel and the fin is set to 0.5 to 1.5 mm. a configuration are also each fin is configured formed 4-8 on the screw axis circumferentially are arranged, also, the particle diameter is in the configuration is 0.1~3mm .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a twin-screw extruder provided with a screw having a crushing mechanism according to the present invention will be described with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals.
1, reference numerals 1, 1A and 1B indicate a mixer supply unit 3 and a kneading unit arranged in series from the upstream side to the downstream side of the pair of screws 2 and 2A provided in the barrel 8. 4 and the discharge unit 5, and a plurality of fins 10 having no leads at predetermined intervals in the axial direction of the screw and in the rotational direction only on the upstream side of the flight unit 1 of the mixer supply unit 3. Is formed to protrude in the radial direction.
[0007]
The longitudinal direction of each fin 10 is completely parallel to the screw axial direction of the screws 2 and 2A, and does not have any material feed lead for the screws 2 and 2A. The width W of each fin 10 is 0. 0.05 to 0.15D (D is the diameter of the screws 2 and 2A), and the axial length L of each fin 10 is 0.1 to 0.5D (D is the diameter of the screws 2 and 2A). Is set to Further, the gap G between each fin 10 and the inner wall 8a of the barrel 8 is set to 0.5 to 1.5 mm, and a total of 4 to 8 fins 10 are formed along the circumferential direction of the screw shaft. In addition, the phase is shifted when viewed in the screw shaft direction from the upstream side toward the downstream side.
That is, the fins 10 adjacent to each other in the axial direction of the fins 10 are arranged at different angular positions along the rotational direction, as shown in FIG.
[0008]
Next, the operation will be described. First, in the state of FIG. 1, a granular raw material (not shown) having a wide range of particle diameters of about 0.1 to 3 mm from the raw material hopper (not shown) on the upstream side of the barrel 8 is put into the barrel 8. When supplied, the granule raw material is guided between the fins 10 of the mixer supply unit 3 and the inner wall 8a of the barrel 8, and is finely pulverized or crushed by the edge of the outer surface of each fin 10 to a certain particle size or less (for example, 1 mm). Become. Therefore, liquid additives and the like (not shown) supplied into the barrel 8 are crushed or crushed, and the raw material after the pulverization or crushing of the flight part 1, the kneading part 4 and the discharge part of the mixer supply part 3 on the downstream side of the fin 10 In the process of being transported to 5, it is dispersed and impregnated almost uniformly and impregnation at the same concentration is achieved, so that a high-quality product with uniform physical properties can be ensured.
As a result of various experiments conducted by the present applicant, when the width W of the fin 10 is smaller than 0.05 mm, the short path increases, there is no crushing and crushing effect, and the axial length L is 0. . It has been found that the extrusion amount is not obtained in the case of 2D or more.
[0009]
Further, in the case of the configuration shown in FIG. 1 described above, the screws 2 and 2A have different-direction non-engagement structures in which the screws 2 and 2A rotate in different directions and do not mesh with each other. For example, as shown in FIG. Even when the screws 2 and 2A rotate in the same direction and mesh with each other, the same effect as the configuration of FIG. 1 can be obtained, and the same parts as those in FIG. The description is omitted. The kneading part 4 in the form of FIG. 2 is different from the form of FIG. 1 in the case where a number of known kneading disks 20 are stacked in the horizontal direction.
[0010]
【The invention's effect】
Since the twin-screw extruder provided with the screw having the crushing mechanism according to the present invention is configured as described above, the following effects can be obtained.
That is, since a plurality of fins without leads are formed on the upstream side of the flight of the mixer supply section of the pair of screws, the grain material guided between each fin and the inner wall of the barrel is crushed or crushed Thus, the particle size can be reduced to a certain particle size or less, the liquid additive can be uniformly dispersed and impregnated in the raw material, and a high-quality product with uniform physical properties can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a twin-screw extruder provided with a screw having a crushing mechanism according to the present invention.
FIG. 2 is a configuration diagram illustrating another embodiment of FIG. 1;
FIG. 3 is a perspective view of a main part showing a conventional screw.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flight part 3 Mixer supply part 4 Kneading part 5 Discharge part 8 Barrel 8a Inner wall 10 Fin L Axial length G Gap

Claims (4)

原料ホッパから粒原料を供給するバレル(8)内に設けられ、上流側にフライト部(1)を形成したミキサー供給部(3)を有すると共に、前記ミキサー供給部(3)の下流側に混練部(4)及び排出部(5)を直列状に有し、一対で用いられるスクリュ(2) を用い、前記スクリュ (2) の前記フライト部(1)の上流側のみに軸方向及び回転方向に沿って所定の間隔で配設されリードのない複数のフィン(10)を有し、前記各フィン (10) の前記軸方向において互いに隣接する前記各フィン (10) 同志は、前記回転方向に沿って互いに異なる角度位置に配設され、前記原料ホッパから供給された種々の粒子径の粒原料は前記フィン(10)と前記バレル(8)の内壁(8a)間に案内されて前記フィン(10)の外面のエッジによって細かく粉砕又は破砕された後、前記フィン(10)の下流側の前記ミキサー供給部(3)の前記フライト部(1)を経て前記混練部(4)及び排出部(5)へ搬送されるように構成したことを特徴とする破砕機構を有するスクリュを備えた二軸押出機。Provided in the barrel (8) for supplying the granular raw material from the raw material hopper, has a mixer supply part (3) in which the flight part (1) is formed on the upstream side, and is kneaded on the downstream side of the mixer supply part (3) part (4) and the discharge section (5) has a serial manner using a screw (2) used in pairs, axially and rotationally only on the upstream side of said flight portion of the screw (2) (1) Each of the fins (10) adjacent to each other in the axial direction of the fins (10) is arranged in the rotational direction. The granular raw materials of various particle diameters, which are arranged at different angular positions along the raw material hopper, are guided between the fin (10) and the inner wall (8a) of the barrel (8), and the fins ( The mixer supply section downstream of the fin (10) after being finely crushed or crushed by the outer edge of 10) A twin-screw extruder provided with a screw having a crushing mechanism, which is configured to be conveyed to the kneading unit (4) and the discharging unit (5) through the flight unit (1) of (3). 前記各フィン(10)の幅は０．０５〜０．１５Ｄ（Ｄ＝スクリュの直径）であり、前記各フィン(10)の軸方向長さ(L)は０．１〜０．５Ｄであり、前記バレル(8)の内壁(8a)と前記フィン(10)との隙間(G)は０．５〜１．５ｍｍに設定されていることを特徴とする請求項１記載の破砕機構を有するスクリュを備えた二軸押出機。The width of each fin (10) is 0.05 to 0.15D (D = screw diameter), and the axial length (L) of each fin (10) is 0.1 to 0.5D. The crushing mechanism according to claim 1, wherein a gap (G) between the inner wall (8a) of the barrel (8) and the fin (10) is set to 0.5 to 1.5 mm. A twin screw extruder equipped with a screw. 前記各フィン(10)はスクリュ軸円周方向に４〜８個形成されて配設されていることを特徴とする請求項１又は２記載の破砕機構を有するスクリュを備えた二軸押出機。 Wherein each of the fins (10) are twin-screw extruder equipped with a screw having a crushing mechanism according to claim 1 or 2, wherein the formed 4-8 on the screw axis circumferentially are arranged. 前記粒子径は、０．１〜３ｍｍであることを特徴とする請求項１ないし３の何れかに記載の破砕機構を有するスクリュを備えた二軸押出機。The twin screw extruder having a screw having a crushing mechanism according to any one of claims 1 to 3, wherein the particle diameter is 0.1 to 3 mm.
JP29365399A 1999-10-15 1999-10-15 Twin screw extruder with screw having crushing mechanism Expired - Fee Related JP3730818B2 (en)

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JP29365399A JP3730818B2 (en) 1999-10-15 1999-10-15 Twin screw extruder with screw having crushing mechanism

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Application Number Priority Date Filing Date Title
JP29365399A JP3730818B2 (en) 1999-10-15 1999-10-15 Twin screw extruder with screw having crushing mechanism

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JP2001113523A JP2001113523A (en) 2001-04-24
JP3730818B2 true JP3730818B2 (en) 2006-01-05

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