KR100850077B1 - Continuous kneading device and kneading system using the same - Google Patents

Abstract

Provided is a continuous kneading apparatus which suppresses heat generation and deterioration of a kneaded material and improves the device life. To that end, a barrel 2 having a screw set 4 with wings 7 on the outer surface of the rotary shaft 5 and a tubular chamber 3 in which two screw sets 4 are disposed. In the twin-axial kneading apparatus 1 having a structure, h being the ratio of the gap h formed between the tip of the wing portion 7 and the inner wall surface of the chamber 3 and the inner diameter D of the chamber 3. / D is made 0.01 or more.

Description

CONTINUOUS KNEADING DEVICE AND KNEADING SYSTEM USING THE SAME}

The present invention relates to a continuous kneading apparatus and a kneading system using the same.

As a device for kneading kneaded substances such as rubber, a batch kneader is known. For example, in the case of kneading rubber, the raw rubber and the compounding agent are introduced into a kneading kneader, and kneading is carried out. However, excessive heat generation due to the kneading action causes deterioration of rubber quality.

Thus, in the kneading operation in the current state, the temperature of the kneaded material being kneaded is monitored, and from the kneader at the time when the temperature rises to a predetermined temperature (for example, about 150 ° C in rubber) before deteriorating the kneaded material. The kneaded material to be discharged is discharged, the kneaded material to be cooled is cooled, and the operation of feeding the kneaded material to the kneader again is repeated a suitable number of times.

This repeatedly kneading step is called a reking process, but this step takes a great deal of time, which causes a reduction in the productivity of products such as tires. For this reason, there is a demand for a kneading apparatus having a low heat generation amount of the kneaded material and having good kneading performance and dispersion performance.

On the other hand, the technique of following patent document 1 relates to the twin screw kneading | mixing extruder which can knead kneaded material, such as resin and high viscosity rubber, continuously.

The twin-screw kneading extruder is arranged on the outer periphery of the two rotary shafts by arranging and fixing a plurality of screw screws or elements having a rotor cross section in a disc shape, and rotating them to engage in a tubular chamber. It is an apparatus which conveys and knead | mixes the to-be-kneaded material, such as rubber and resin, continuously supplied.

When kneading | mixing rubber | gum etc. using this twin screw kneading extruder, the to-be-mixed material which consists of rubber | gum which added rubber | gum or various compounding agents, etc. is first supplied to the feed part of a twin screw kneading extruder. In the feed section, the kneaded material is heated and extruded to the kneading section located downstream in the axial direction.

Next, in the kneading unit, kneading is applied by applying a shearing force with a kneading disk or the like. The kneading disk has a wing portion projecting on the outer surface, and gives a strong shear force to the kneaded material in a gap formed between the tip of the wing portion and the chamber inner wall, a so-called tip clearance.

In the conventional general continuous kneader, since the tip clearance is extremely small setting, when kneading | mixing operation | work is performed using this apparatus, there exists a problem that heat_generation | fever of the to-be-kneaded | mixed material is large and causes quality deterioration. On the other hand, in the twin screw kneading extruder described in Patent Document 1, by forming a wide tip clearance or a narrow tip clearance, it is possible to study the flow characteristics of the kneaded material in the chamber and to suppress the heat generation as one effect. Doing.

Patent Document 1: Japanese Patent Laid-Open No. 2003-245534

However, in the above-mentioned continuous kneading apparatus, sufficient titration is not adequately optimized, and there is a concern that the suppression of exotherm of the kneaded material is insufficient, or that the kneading performance decreases as a result of widening the tip clearance.

In general, when the kneaded material is unevenly distributed in the chamber, since the kneaded disk or the like is hardly held evenly in the chamber, the inner wall surface of the chamber and the wing portions such as the kneaded disk contact with each other, resulting in wear and the like. It may cause problems such as deterioration.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and provides a continuous kneading apparatus and a kneading system using the same, while suppressing the deterioration of the kneading performance, suppressing the heat generation and deterioration of the kneaded material during kneading, and further improving the life of the apparatus. For the purpose of

Summary of the Invention

The continuous kneading apparatus according to the present invention for solving the above problems is a continuous kneading apparatus having a barrel having a screw set having a wing portion on the outer surface of the rotating shaft, and a tubular chamber in which the screw set is disposed. The h / D, which is a ratio of the gap h formed between the tip of the wing portion and the inner wall surface of the chamber and the inner diameter D of the chamber, is 0.01 or more.

Moreover, the said continuous kneading apparatus is characterized by the twin screw kneading extruder.

Moreover, the said continuous kneading apparatus is characterized by the structure which the blade part provided in the outer surface of a rotating shaft meshes with each other between two axes.

Moreover, the said continuous kneading apparatus is characterized by the structure which a blade part engages with each other between two axes over the whole length of a rotating shaft or a part.

The continuous kneading apparatus is characterized by being a single screw kneading extruder.

Moreover, the said continuous kneading apparatus is characterized by kneading rubber | gum or a rubber type composition.

The kneading system which concerns on this invention which solves the said subject has a kneading machine for master kneading | mixing, and the continuous kneading apparatus set downstream of the kneading machine, The said continuous kneading apparatus is a continuous kneading apparatus of the structure mentioned above, It is characterized by the above-mentioned. .

Moreover, it has a kneading machine for master kneading | mixing, the 1st continuous kneading apparatus provided downstream for this kneading machine, and used for the remill, and the 2nd continuous kneading apparatus provided downstream for this 1st continuous kneading apparatus for final kneading, The first continuous kneading apparatus or the second continuous kneading apparatus is characterized in that the continuous kneading apparatus of the above-described configuration.

Moreover, it has the kneading machine for master kneading | mixing, the under mixer and cooling apparatus set downstream of the said kneading machine, and the continuous kneading apparatus provided downstream of the said cooling apparatus, The said continuous kneading apparatus is continuous of the structure mentioned above. It is a kneading apparatus, It is characterized by the above-mentioned.

Effects of the Invention

According to the continuous kneading apparatus according to the present invention, in the continuous kneading apparatus having a screw set having a wing on the outer surface of the rotary shaft, and a barrel having a tubular chamber in which the screw set is disposed, the tip of the wing and Since the gap h formed between the inner wall surfaces of the chamber and the ratio h / D, which is the ratio of the inner diameter D of the chamber, is 0.01 or more, heat generation of the kneaded material without significantly lowering the conventional kneading performance, Deterioration can be suppressed. Further, since the tip clearance h is made relatively large, the inner wall surface of the chamber and the wing portion such as the kneading disk are in contact with each other even when the kneaded material is ubiquitous in the chamber and kneading disk or the like is difficult to maintain evenly in the chamber. It is possible to prolong the life of the device by preventing wear.

Therefore, it is most suitable as a twin screw or single screw kneading extruder. Especially with respect to highly viscous kneaded material, such as rubber | gum or a rubber type composition, heat_generation | fever and quality deterioration can be suppressed further. In addition, since the heat generation of the kneaded material can be reduced, the cooling function can be made simple.

Moreover, according to the kneading system which concerns on this invention, compared with the batch kneading | mixing kneading | mixing which is the conventional general rubber kneading | mixing, it is possible to make especially advantageous cost, a production time, etc., and can improve productivity.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional structure drawing which shows the principal part of the continuous kneading apparatus which concerns on 1st Embodiment.

2 is a schematic internal plan view of a biaxial kneading extruder which is a continuous kneading apparatus according to the first embodiment,

3 is a graph showing the relationship between the h / D of the kneading portion, the shear force ratio, and the exothermic rate ratio in the continuous kneading apparatus according to the first embodiment;

4 is a schematic cross-sectional structural view showing the main parts of a continuous kneading apparatus according to a second embodiment;

5 is a schematic internal plan view of a single screw kneading extruder which is a continuous kneading apparatus according to a third embodiment,

FIG. 6 is a fourth embodiment, schematically showing a kneading system in which a batch kneader is applied to master kneading, and one biaxial kneading extruder is applied to remil and final kneading;

7 is a fifth embodiment, schematically illustrating a kneading system in which a batch kneader is applied to master kneading and two biaxial kneading extruders are applied to remil and final kneading, respectively.

FIG. 8 is a sixth embodiment, applying a batch kneader to master kneading, applying one twin screw extruder to remill and final kneading, and having a mixer and a cooler downstream of the batch kneader to provide a remill. Schematic diagram showing a kneading system for executing a

FIG. 9 is a seventh embodiment, in which a kneading kneader is applied to master kneading, two kneading kneading extruders are applied to remill and final kneading, respectively, and kneading is performed by a biaxial kneading extruder for mill. Schematic diagram showing the system.

Explanation of the sign

1: twin-screw kneading extruder, 2: barrel, 3: chamber, 4: screw set, 5: rotating shaft, 6: kneading disk, 7: wing, 9: coolant, h: tip clearance, D: chamber diameter, 11 extrusion part, 12 kneading part, 13 extrusion part, 14 screw pin, 15 screw fin, 20: single screw kneading extruder, 21 barrel, 30 kneading machine, 31 under mixer, 32 biaxial Kneading extruder, 32a: twin screw kneading extruder, 32b: twin screw kneading extruder, 33: molding machine, 34: cooling device

<1st embodiment>

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional structure drawing which shows the principal part of the continuous kneading apparatus which concerns on 1st Embodiment. 2 is a schematic internal plan view of the biaxial kneading extruder which is a continuous kneading apparatus which concerns on 1st Embodiment.

As shown in FIG. 2, the twin screw kneading extruder 1 according to the present embodiment has a pair of screw sets 4 parallel to the inside of the barrel 2. In general, a screw set is formed by combining one or several segments such as a kneading disk, a kneading disk, a screw, and the like on the outer circumference of the rotating shaft.

Each screw set 4 in the present embodiment has an extruded portion 11 (one end) having a screw fin 14 on the outer surface of the rotary shaft 5 from the supply side of the kneaded material. And an extruded portion 13 having a kneading portion 12 (middle portion) having a kneading wing portion on the outer surface of the rotating shaft 5, and a screw pin 15 on the outer surface of the rotating shaft 5 ( The other end).

In the twin screw kneading extruder 1 shown in FIG. 2, the opposite screw pins 14 of the extruded portion 11 convey the kneaded material introduced from a hopper (not shown) in the downstream direction to knead the kneading portion. It supplies to (12). In the kneading portion 12, the kneading blade portions provided on the outer surface of the rotary shaft 5 are engaged with each other, and the shear force generated between the tip of the kneading blade portions and the inner wall surface of the barrel 2 is avoided. Knead the kneaded material. And in the extrusion part 13 located downstream of the kneading part 12, the material kneaded | mixed by the screw pin 15 which mutually opposes is carried out to the next process.

Next, the kneading part 12 located in the middle part of the twin screw kneading extruder 1 shown in FIG. 2 is demonstrated in detail based on FIG. As shown in FIG. 1, a pair of screw sets 4 are arrange | positioned in the tubular chamber 3 formed in the barrel 2 (it is a shape which two cylinders fuse | blended because it is biaxial). The two screw sets 4 are arranged in parallel and are rotated at constant speed or at a constant speed in opposite directions to each other by a driving means (not shown). In addition, the two screw sets 4 may be rotated in the same direction.

The screw set 4 is composed of a rotary shaft 5 and a kneading disc 6 fitted to the outer circumference of the rotary shaft 5 by means of quenching or the like. The kneading disc 6 consists of a central hole portion fitted to the rotary shaft 5 and a plurality of wings 7 provided on the outer surface of the hole portion.

The outer surface of the kneading disk 6 is subjected to treatment such as Cr plating in order to improve wear resistance and corrosion resistance. Further, after the growth of stellite, a treatment such as Cr plating may be performed. The kneading disc 6 may be formed integrally with the outer surface of the rotary shaft 5.

Next, the effect | action of the screw set 4 in the kneading part 12 is demonstrated. The kneaded material that has reached the chamber 3, such as raw rubber and compounding agents (carbon black, silica, oil, chemicals, etc.), can be used for the kneading disc 6 of each screw set 4. It is kneaded by the interlocking action of each other and the shearing action occurring between the kneading disk 6 and the inner wall surface of the chamber 3.

During kneading, a pressurized cooling medium such as water flows into the cooling passage 9 provided in the barrel 2, and the same cooling medium is fed into the screw set 4 to control heat generation during kneading.

Here, in this embodiment, the kneading disk 6 is closest to the inner wall surface of the chamber 3, that is, the tip of the wing portion 7 provided in the kneading disk 6 and the inside of the chamber 3. The tip clearance h, which is a gap formed between the wall surfaces, is set relatively large.

3 is a graph showing the relationship between the h / D of the kneading portion, the shear force ratio, and the heat generation rate ratio in the continuous kneading apparatus according to the present embodiment. The figure shows the relationship which set the rotational speed of the kneading | mixing disk 6 to three stages of high speed, medium speed, and low speed. In addition, h is the magnitude of the tip clearance, and D shows the inner diameter of the chamber 3.

As an experiment for inducing the relationship shown in the same drawing, first, the shear force (τ ₀ ) and the exothermic rate when a kneaded material is kneaded by rotating the conventional kneading apparatus (h / D = 0.002 of the kneading unit) at low speed (50 rpm) (Q ₀ ) was measured. Next, under the same conditions (low speed rotation, kneaded material, internal diameter D), the tip clearance h is increased, and the change in the shear force τ _L and the heat release rate Q _L when the h / D is increased is Investigated. In addition, changes in shear force (τ _M , τ _H ) and heat generation rates (Q _M , Q _H ) during medium speed rotation and high speed rotation (200 rpm) were also investigated.

Based on these experiments, and calculates the reference as a shear force (τ ₀₎ and the heating speed ratio _{(τ / τ 0, Q /} Q 0) of a shear force (τ) and the heating rate (Q) of the (Q _0), The relationship between the h / D of the kneading | mixing part in a kneading | mixing apparatus, the shear force ratio, and the exothermic rate ratio is shown on the graph.

As shown in the figure, at both rotational speeds, it is known that the shear force τ and the exothermic rate Q decrease as the h / D increases, that is, the tip clearance h increases. In addition, in the comparison of the rate of decrease of the shear force τ and the exothermic rate Q, as the h / D increases, the shear force gradually decreases and becomes constant at about 50% (the conventional half shear force), but the exothermic rate is rapidly increased. It knows that it falls and falls to about 10% or less.

In addition, when maintaining a constant shear force (tau), it turns out that h / D must be enlarged so that rotation speed may increase. This is because even in the same tip clearance, the shearing force increases with increasing rotational speed and the exothermic rate increases. Therefore, when the rotational speed is increased, it is necessary to increase the h / D to lower the shearing force and lower the exothermic rate. Because.

As mentioned above, although the heat generation of the kneaded material can be suppressed by increasing h / D, the shear force?, Which shows the kneading performance, is also reduced by increasing h / D.

Therefore, in order to suppress the heat generation of the kneaded material, h / D may be 0.01 or more, preferably 0.02 or more, and more preferably 0.04 or more. Moreover, compared with the kneading performance which the conventional kneading apparatus had, in order to suppress the fall of the kneading performance of this embodiment, h / D may be 0.12 or less, Preferably it is 0.1 or less, More preferably, it is 0.08 or less. .

By making h / D into the said range, it is possible to suppress heat generation especially, suppressing the fall of the shear force (tau) low.

In addition, in the present embodiment, since the tip clearance h is set to be relatively large, the kneaded material is ubiquitous in the chamber 3, and the kneading disc 6 is difficult to be maintained evenly in the chamber 3. Even in this case, the inner wall surface of the chamber 3 and the wing portion 7 of the kneading disk 6 can be prevented from coming into contact with each other, and the life of the device can be extended.

In addition, in this embodiment, although the example which controls the tip clearance in the kneading part 12 was disclosed, it is not limited to the kneading part 12, The screw pin 14 in the extrusion parts 11 and 13, The same control may also be performed with respect to 15).

<2nd embodiment>

4 is a schematic cross-sectional structural view showing main parts of the continuous kneading apparatus according to the second embodiment.

In the present embodiment, the blades 7 in the first embodiment are engaged with each other between two axes (between the rotary shafts 5 and 5), that is, the rotational trajectories of the two blades 7 are in front. In order to improve the kneading performance by arranging to wrap, the other components are the same as in the first embodiment, and the same reference numerals will be omitted for the same members and parts as those in FIG.

Moreover, not only the blade part 7 in the kneading part 12 but also the screw pin (broad-blade wing part) 14 and 15 in the extrusion parts 11 and 13, ie, each rotating shaft 5 It is preferable to arrange | position so that it may engage each other between two axes over the full length of (5).

Third Embodiment

5 is a schematic internal plan view of a single screw kneading extruder which is a continuous kneading apparatus according to a third embodiment. The single screw kneading extruder 20 shown in the same figure and the twin screw kneading extruder 1 shown in FIG. 2 are equivalent except that the number of shafts and the shape of the tubular barrel 2 according to it differ. Has a configuration. Therefore, a common code | symbol is attached | subjected to the corresponding structure of both.

In the kneading section 12 in the single-screw kneading extruder 20, the kneaded material is kneaded by the shear force generated between the distal end portion (wing portion) of the kneading disk and the inner wall surface of the barrel 21. Also in this embodiment, by setting it as the range of h / D which concerns on 1st Embodiment, heat generation can be suppressed especially, suppressing the fall of shear force (tau) low. In addition, the device life can be extended.

Moreover, also in this embodiment, you may control tip clearance similarly with respect to the screw pins 14 and 15 in the extrusion parts 11 and 13.

Fourth Embodiment

FIG. 6: is a 4th Embodiment, and is a schematic block diagram which shows the kneading system which applied the batch kneader to master kneading, and applied one biaxial kneading extruder to remil and final kneading. The twin screw kneading extruder 32 shown in the figure has two kneading portions of the continuous kneading apparatus according to the first embodiment, and the first kneading portion (upstream side) performs kneading corresponding to remil and performs second kneading. In the section (downstream side), kneading corresponding to final is performed.

In this kneading system, first, the raw material rubber and the compounding agent are kneaded (master kneading) using the batch kneader 30. In the batch kneader 30, the kneaded material is discharged when the BIT (Black carbon incorporate time) at which the rubber and the compounding agent are integrated is reached.

The discharged kneaded material is thrown into the twin-screw kneading extruder 32, and kneading corresponding to rimil is performed in the upstream section. Also in this kneading step, as shown in the first embodiment, since the tip clearance h is increased and h / D is set to a predetermined value, the kneading is carried out at almost the same performance as the conventional kneading performance. The kneading which suppressed the heat generation of the kneaded material is made possible. For this reason, the process can be continued continuously by the final kneading | mixing by passing a kneading part once, without having to perform a remil process several times.

Next, after the vulcanizing agent is added, kneading corresponding to final is performed in the downstream section of the twin screw kneading extruder 32. Also in this kneading step, kneading in which heat generation of the kneaded material is particularly suppressed while kneading is performed with the above-described effects, that is, substantially equivalent to conventional kneading performance, is possible. And final kneading is complete | finished and the rubber material taken out from the twin screw kneading extruder 32 is shape | molded by the shaping | molding machine 33, and is used as a material of rubber goods, such as a tire.

Moreover, you may provide the vulcanization process which crosslinks-reacts a vulcanizing agent by heating etc. in the downstream of the shaping | molding machine 33. In addition, when the biaxial kneading extruder 32 itself has a molding function, the molding machine 33 may be omitted.

As described above, according to the kneading system, since the remill process can be completed once, the process can be progressed by final kneading continuously, thereby reducing the time required for work and improving productivity.

Fifth Embodiment

FIG. 7: is a 5th Embodiment, and is a schematic block diagram which shows the kneading system which applied the batch kneader to master kneading | mixing, and applied two biaxial kneading extruders to remil and final kneading, respectively. The two twin-screw kneading extruders 32a and 32b shown in the same drawing are the kneading apparatus (refer FIG. 1 and FIG. 2) which concerns on 1st Embodiment, and it is a rimil in the twin-screw kneading extruder 32a (upstream). In the twin-screw kneading extruder 32b (downstream).

In the kneading system according to the present embodiment, master kneading is performed by the batch kneader 30, the kneaded material which has finished master kneading is fed into the twin screw kneading extruder 32a, and remilling is executed. As shown in the first embodiment, since the tip clearance h is increased and h / D is set to a predetermined value as shown in the first embodiment, the kneading step is particularly performed while kneading at a performance substantially equal to that of the conventional kneading performance. Kneading with reduced heat generation of water is possible. For this reason, the process can be continuously advanced to subsequent kneading | mixing by passing through the twin screw kneading extruder 32a once, without having to perform a remil process several times.

Next, after the vulcanizing agent is added, final kneading is performed in the twin screw kneading extruder 32b. Also in the final kneading step, kneading in which the heat generation of the kneaded material is suppressed is particularly possible while kneading is performed with the above-described effects, that is, substantially equivalent to the conventional kneading performance. And final kneading is complete | finished and the rubber material taken out from the twin screw kneading extruder 32b is shape | molded by the shaping | molding machine 33, and is used as a material of rubber goods, such as a tire.

In this embodiment, by setting it as the structure which takes out once after remilling, it is possible to design several final kneading lines, to change the kind and quantity of the additive to add, or to set several shaping | molding shapes, and the width | variety of application development Can be enlarged.

Sixth Embodiment

FIG. 8 is a sixth embodiment, applying a batch kneader to master kneading, applying one twin screw extruder to remill and final kneading, and having a mixer and a cooler downstream of the batch kneader to provide a remill. It is a schematic block diagram which shows the kneading system which implements this.

The kneading system according to the present embodiment is a modification of the kneading system according to the fourth embodiment, and an under mixer 31 and a cooling device 34 are provided between the kneader 30 and the twin screw kneading extruder 32. Doing.

In the present embodiment, the kneaded material taken out of the kneader 30 is sheeted by the under mixer 31, cooled by the cooling device 34, and then returned to the kneader 30 again to be master kneaded. do. This limit mill process is performed once or multiple times. Then, it is put into the twin screw kneading extruder 32, and is shape | molded by the molding machine 33.

The kneading system according to the present embodiment is suitable for kneading in which dispersion of the compounding agent to kneaded substances such as raw material rubber is difficult to disperse.

Seventh Embodiment

FIG. 9 is a seventh embodiment, in which a kneading kneader is applied to master kneading, two kneading kneading extruders are applied to remill and final kneading, respectively, and kneading is performed by a biaxial kneading extruder for mill. It is a schematic block diagram which shows a system.

The kneading system according to the present embodiment is a modification of the kneading system according to the fifth embodiment, and the kneaded material taken out from the twin screw kneading extruder 32a is returned to the twin screw kneading extruder 32a again. In the fifth embodiment, the remilling step in the twin screw kneading extruder 32a is only once, but in this embodiment, the remilling step is performed a plurality of times. Then, it is thrown into the twin screw kneading extruder 32b, and is shape | molded by the molding machine 33.

In addition, although the remill process shown in FIG. 9 is performed by circulating only the twin screw kneading extruder 32a, the kneaded material taken out from the twin screw kneading extruder 32a is returned to the kneading machine 30, and the twin screw kneading | mixing is carried out. It may be used as a remill process in which the extruder 32a and the kneader 30 are circulated, and as shown in FIG. 8, it may be used as a remill process in which only the kneader 30 is circulated.

The kneading system according to the present embodiment is suitable for kneading in which dispersion of the compounding agent to kneaded substances such as raw material rubber is difficult to disperse.

The continuous kneading apparatus and the kneading system using the same according to the present invention can be applied to a kneaded material made of a resin or the like, without being limited to a kneaded material made of rubber or a rubber containing various compounding agents.

Claims (9)

In a continuous kneading apparatus comprising a screw set having a wing on the outer surface of the rotary shaft and a barrel having a tubular chamber in which the screw set is disposed, H / D which is the ratio of the clearance gap h formed between the front-end | tip of the said wing | blade part, and the inner wall surface of the said chamber, and the inner diameter D of the said chamber is 0.01 or more and 0.12 or less, The continuous kneading apparatus kneads rubber or rubber-based composition, Rotational speed of the screw is characterized in that more than 50rpm 200rpm Continuous kneading device. The method of claim 1, It is a twin screw kneading extruder Continuous kneading device. The method of claim 2, The wing portion provided on the outer surface of the rotating shaft is characterized in that the structure is engaged with each other between the two axes Continuous kneading device. The method of claim 3, wherein Characterized in that the blades are engaged with each other between two axes over or over the entire length of the rotating shaft. Continuous kneading device. The method of claim 1, Characterized in that the single screw kneading extruder Continuous kneading device. delete In the kneading system, A kneader for master kneading, and a continuous kneading apparatus provided downstream of the kneading machine, The continuous kneading apparatus is the continuous kneading apparatus according to any one of claims 1 to 5, Kneading system. In the kneading system, A kneader for master kneading, a first continuous kneading apparatus provided downstream of the kneading machine and used for a remill, and a second continuous kneading apparatus provided downstream of the first continuous kneading apparatus and used for final kneading. Equipped with The said 1st continuous kneading apparatus or the 2nd continuous kneading apparatus is a continuous kneading apparatus in any one of Claims 1-5 characterized by the above-mentioned. Kneading system. In the kneading system, A kneader for master kneading, an under mixer and a cooling device provided downstream of the kneader, and a continuous kneading device provided downstream of the cooling device, The continuous kneading apparatus is the continuous kneading apparatus according to any one of claims 1 to 5, Kneading system.

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