JP2018183938A - Plasticizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasticizing apparatus for passing a material containing fibers through a flow path around a torpedo to promote melting of the material, wherein, when plasticizing a resin containing supplied fibers, breakage of the fibers is suppressed while dispersing the fibers, and the fibers can be supplied to the next step in a state where the orientations of the fibers are aligned to some extent.SOLUTION: The present invention provides a plasticizing apparatus 11 for passing a material M containing fibers through a flow path 29 around a torpedo 25 to promote melting of the material. In the apparatus, a distributed supply part 36 having a plurality of flow paths 35 is provided on the downstream side of the torpedo 25.SELECTED DRAWING: Figure 1

Description

The present invention relates to a plasticizing apparatus that allows a material containing fibers to pass through a flow passage portion around a torpedo to promote melting of the material.

A plasticizing device that allows the material to pass through the channel portion around the torpedo to promote melting of the material can be constructed relatively easily. And when a material contains a fiber, when melting material, it has the advantage that breakage of a fiber can be suppressed. As a plasticizer using the torpedo as described above, those described in Patent Document 1 and Patent Document 2 are known. The apparatus described in FIG. 6 of Patent Document 1 melts the low-melting-point metal material by advancing the plunger by a combination of the plunger and the torpedo, and supplies it to the inside of the heating cylinder. However, the apparatus shown in FIG. 6 of Patent Document 1 does not melt the material containing fibers, and does not consider any problems related to fiber dispersion and direction.

On the other hand, as a plasticizing apparatus for promoting melting of a material containing fibers by torpedo, one described in Patent Document 2 is known. Patent Document 2 describes that the molten resin passes through a high-temperature torpedo and is sufficiently plasticized. It is also described that the plasticizing device using the plunger can avoid the breakage of the long fibers due to the screw, compared to the plasticizing device using the screw.

JP-A-4-156320 (page 5, upper right column to lower left column, FIG. 6) JP 2013-86455 A (Claim 1, 0018, FIG. 1)

However, also in Patent Document 2, since the molten material containing the fiber that has passed through the torpedo portion is supplied to the injection plunger as it is, no problems regarding the dispersion and direction of the fiber are considered in the plasticizing device portion. .

Therefore, in the plasticizing apparatus of the present invention, in the plasticizing apparatus in which the material containing the fibers passes through the flow path around the torpedo to promote the melting of the material, the fiber breakage occurs when the resin containing the supplied fibers is plasticized. An object of the present invention is to provide a plasticizing apparatus capable of dispersing the fibers while suppressing the above and supplying the fibers to the next process in a state where the directions of the fibers are aligned to some extent.

The plasticizing apparatus according to claim 1 of the present invention is a plasticizing apparatus that promotes melting of a material by allowing a material containing fibers to pass through a flow path around the torpedo, and a plurality of flow paths are provided on the downstream side of the torpedo. In addition, a distributed supply unit is provided.

A plasticizing device according to a second aspect of the present invention is the plasticizing device according to the first aspect, wherein a narrowest channel is provided over the entire outer periphery of the torpedo as a part of a channel around the torpedo. The distance between the torpedo in the flow path and the outer portion of the heating cylinder is characterized in that when the supplied material includes pellets, the distance is equal to or less than the particle size of the pellets or the length in the short side direction.

The material supply device of the plasticizing device according to claim 3 of the present invention is the material supply device according to claim 1 or 2, wherein the narrowest portion of the flow path is provided as a part of the plurality of flow paths of the dispersion supply portion.
The diameter in the direction orthogonal to the material flow direction or the length in the short side direction in the narrowest channel is not more than the length of the supplied fiber.

A plasticizing device according to a fourth aspect of the present invention is the plasticizing device according to any one of the first to third aspects, wherein the torpedo has a throttle portion whose diameter or cross-sectional area is smaller than the diameter or cross-sectional area of the torpedo. It is characterized by.

The plasticizing apparatus of the present invention is a plasticizing apparatus that promotes the melting of a material by allowing a material containing fibers to pass through a flow path around the torpedo, and is provided with a dispersion supply unit provided with a plurality of flow paths on the downstream side of the torpedo. Therefore, when plasticizing the resin containing the supplied fiber, it is plasticized in a state where the orientation of the fiber is aligned to some extent while suppressing fiber breakage or in a state where the opening is good to some extent, and is supplied to the next process can do.

It is sectional drawing of the plasticizing apparatus of this embodiment. It is an expanded sectional view of the principal part of the plasticizing apparatus of this embodiment. It is an arrow view of the AA line of FIG. It is sectional drawing at the time of combining the injection apparatus of another embodiment with the plasticizing apparatus.

A plasticizing apparatus 11 according to this embodiment will be described with reference to FIGS. The plasticizing apparatus 11 of this embodiment is an apparatus attached to an injection molding machine (including an injection compression molding machine) for molding a molded article of a composite resin material containing a carbon fiber material. Although the injection device 12 of the injection molding machine is a general one, the heating cylinder 13 is a cylindrical member having a predetermined thickness, and a plurality of heaters 13a and a plurality of thermocouples (not shown) are provided, and each heater 13a has a zone. Temperature control is possible. A metering and injection screw 14 is disposed in an inner hole 13b provided at the center in the axial direction of the heating cylinder 13 so as to be rotatable and movable forward and backward. The screw 14 is provided with a flight portion 14a at a predetermined interval, and during measurement, a resin material containing carbon fiber (hereinafter simply referred to as fiber) is kneaded and measured by rotating the screw, and is sent and stored in the inner hole 13b in front of the screw. During injection, it has a role of injecting the stored material into a cavity in a mold (not shown) by advancing the screw. Therefore, the injection device 12 itself also has a plasticizing function. In this embodiment, since the resin material containing the fiber already melted is sent from the plasticizing device 11 described later to the inner hole 13b of the heating cylinder 13 of the injection device 12, the relationship between the screw length and the diameter is determined. The L / D shown is not limited to this, but may be as short as 10 to 20 as an example. The compression ratio indicating the ratio of the groove cross-sectional area between the feed zone 14b of the screw 14 and the metalling zone (not shown) is not limited to this, but may be about 1.0 to 3.0 as an example.

A nozzle (not shown) is fixed in front of the heating cylinder 13, and injection into the cavity is performed through the nozzle during the injection. In addition, a supply hole 15 for a molten resin material containing fibers is provided in an upper portion near the rear portion of the heating cylinder 13. In the present embodiment, as shown in FIG. 3, the supply hole 15 of the heating cylinder 13 is provided at a position eccentric with respect to the axis O of the screw 14. More specifically, the screw 14 is eccentrically provided in a direction in which the rotating direction of the screw 14 and the falling direction of the molten resin material containing the fibers coincide. A housing portion 16 (front plate) is fixed around a portion of the supply hole 15 of the heating cylinder 13, and a portion of the mounting hole 17 of the housing portion 16 corresponding to the supply hole 15 of the heating cylinder 13 is The tip portion of the plasticizing device 11 is fixedly attached so as to be inserted. The housing portion 16 may be provided with a cooling mechanism using a cooling fluid.

Since the drive unit and the like of the injection device 12 are well-known, description thereof is omitted, but a measuring servo motor for rotating the screw 14, an injection servo motor for moving the screw 14 back and forth, and at the time of injection In addition, a load cell that detects a force applied in the axial direction of the screw 14 during weighing, a nozzle touch mechanism that moves the entire injection device back and forth and presses the nozzle against the nozzle touch surface of the mold are provided. The injection servo motor, the weighing servo motor, the load cell, and the like are connected to a control device (not shown).

Next, the plasticizing apparatus 11 will be described. The plasticizing device 11 includes a heating cylinder 18. A plurality of heaters 18b and thermocouples (not shown) are arranged on the outer periphery of the outer portion 18a of the heating cylinder 18, and temperature control is possible for each zone of the heaters 18b. The cylinder 20 of the pushing device 19 that is operated by air or hydraulic pressure is fixed to the rear end (upper end) of the heating cylinder 18, and the piston 21 attached to the rod 20 a of the cylinder 20 moves forward and backward in the inner hole 18 c of the heating cylinder 18. It is possible.

In addition, a supply hole 22 for supplying a resin material M containing fibers is provided on the side surface of the upper portion of the heating cylinder 18 where the heater 18b is not provided. 23 is connected. A hopper 24 for storing a resin material M containing fibers is connected to the upper portion of the supply cylinder 23. Here, although the supply device and the mixing device of the fiber and the resin material to the hopper 24 are not described in detail, the fiber and the resin material are mixed and stored in the hopper 24 as a resin material M containing the fiber. .

A portion on the upper side including the supply hole 22 of the inner hole 18 c of the heating cylinder 18 is a stroke zone S of the piston 21 of the pushing device 19. The stroke zone S of the heating cylinder 18 is provided with a cooling mechanism (not shown) using a cooling fluid so that the material supplied into the inner hole 18c is not melted in the stroke zone S at an early stage. Then, the resin material M including the fiber supplied from the supply hole 22 to the stroke zone S is pushed downward by the piston 21. A torpedo 25 is disposed below the stroke zone S of the inner hole 18 c of the heating cylinder 18. The torpedo 25 is supported by the outer portion 18a of the heating cylinder 18 by a plurality of pillars (not shown), and is attached to the shaft core of the inner hole 18c. As for the shape of the torpedo 25, a cylindrical portion 26 having an equal cross-sectional area in the vertical direction is provided in the middle, and conical portions 27 and 28 are provided at the upper and lower portions of the cylindrical portion 26, respectively. A heater 30 such as a cartridge heater is provided inside the torpedo 25. Although one cartridge heater 30 is shown in FIG. 1, three or six cartridge heaters 30 may be provided in the circumferential direction in plan view. Wiring to the heater 30 is performed via the above-mentioned pillar portion (not shown). However, the heater 30 of the torpedo 25 is not essential.

Between the torpedo 25 and the outer portion 18a of the heating cylinder 18 is a flow path 29 of the resin material M containing fibers. The resin material M including the fibers in the stroke zone S is pushed into the flow path 29 a around the conical part 27 at the top of the torpedo 25 and the flow path 29 b around the cylindrical part 26. The resin material M containing the fibers fed into the flow paths 29a and 29b is heated from both the heaters 18b and 30 of the heater 30 provided in the torpedo 25 and the heater 18b provided in the outer portion 18a of the heating cylinder 18. It has come to be.

The conical portion 28 on the lower side of the torpedo 25 has a two-stage surface, and the angle of the outer peripheral surface 28a connected to the cylindrical portion 26 with respect to the horizontal plane is more obtuse than the angle of the surface 28b with respect to the horizontal plane on the tip side. Yes. On the other hand, the lower portion of the outer shell portion 18a of the heating cylinder 18 corresponding to the cylindrical portion 26 of the torpedo 25 has a reduced diameter taper portion 31 that is reduced in diameter in accordance with the shape of the conical portion 28 on the lower side of the torpedo 25. It has become. The angle of the outer peripheral surface 28 a connected to the cylindrical portion 26 of the torpedo 25 and the angle of the reduced diameter tapered portion 31 are approximate, and formed between the entire outer periphery of the outer peripheral surface 28 a of the torpedo 25 and the reduced diameter tapered portion 31. A part of the flow path 29 is the narrowest flow path 29c.

The distance between the torpedo 25 and the outer portion 18a in the narrowest channel 29c is preferably equal to or smaller than the particle size of the supplied resin pellets or the length in the short side direction, and is set to 0.5 mm to 3 mm. It is preferable. The length of the narrowest channel 29c in the material flow direction is preferably equal to or less than the length of the supplied fiber. In the present embodiment, the narrowest channel 29c is provided around the outer peripheral surface 28a connected to the cylindrical portion 26 of the conical portion 28 on the lower side of the torpedo 25. The narrowest channel may be provided between the side surface 28 b and the reduced diameter tapered portion 31. Furthermore, the narrowest channel may be provided around the entire lower portion of the cylindrical portion 26. In the present embodiment, the cylindrical portion 26 has the same cross-sectional area in the up-and-down direction, but the diameter is gradually increased downward and the flow path 29 becomes narrower. It may be different. The torpedo 25 may be provided with a flow path 29 therein, and the number of torpedo 25 is not limited to one, and a plurality of them may be provided continuously.

The outer portion 18 a of the heating cylinder 18 includes a constricted portion 32 below the reduced diameter tapered portion 31. The diameter or cross-sectional area of the flow path 33 of the throttle portion 32 is smaller than the diameter or cross-sectional area of the cylindrical portion 26 of the torpedo 25. By narrowing the cross-sectional area of the flow path 33 below the torpedo 25 in this way, heat transfer from the outer portion 18a of the heating cylinder 18 can be efficiently performed on the resin material containing the fiber once in a molten state. It has become. An enlarged portion 34 is provided below the aperture portion 32. As shown in the shape of the supply hole 15 in FIG. 3, the enlarged part 34 is a part connected to the elliptical supply hole 15 from the narrowed part 32 having a circular cross-sectional area. On the downstream side, a dispersion supply unit 36 provided with a plurality of flow paths 35 is provided.

In the present embodiment, the dispersion supply unit 36 is formed of a plate-like member 38 in which a plurality of long holes 37 are opened. The plate-like member 38 is attached so that the direction orthogonal to the flow direction of the molten resin in the enlarged portion 34 is a flat surface and the long hole 37 is the flow direction. The long hole 37 of the plate-like member 38 has a cross-sectional area that narrows downward, and the narrowest channel 35a is formed on the lower end side. The length of the short side 35a1 in the direction orthogonal to the material flow direction of the narrowest channel 35a is preferably set to be equal to or shorter than the length of the supplied fiber, and is not limited thereto. Is desirably 2 to 15 mm. The diameter when the cross-sectional shape of the narrowest channel 35a is a perfect circle is preferably 2 to 15 mm as described above. Further, the thickness of the dispersion supply part 36 plate-like member 38 (the length in the vertical direction of the long hole 37) is not limited to this, but is preferably 5 to 50 mm. Moreover, the flow path of the dispersion | distribution supply part 36 is not limited to the thing of illustration, A perfect circle, square, etc. may be sufficient besides a long hole, and the number of flow paths is not limited. Moreover, the dispersion | distribution supply part 36 may comprise what comprised the some flow path combining the some rod-shaped member.

In the above description, the portion of the heating cylinder 18 facing the stroke zone S and the torpedo 25, the reduced diameter tapered portion 31, the narrowed portion 32, and the enlarged portion 34 are described as an integral outer portion 18a. Depending on the convenience of attachment, each part may be composed of divided blocks. As an example, the upper and lower separate heating cylinders 18 may be coupled so as to sandwich the column portion of the torpedo 25.

Next, the operation of the plasticizing apparatus 11 will be described. The fiber and the resin material are stored in the hopper 24 in a mixed state. In the present embodiment, the fiber material is carbon fiber, and a material in which a plurality of fibers are bundled by a sizing agent is supplied and stored separately from the resin material. The resin material is supplied and stored with pellets of thermoplastic resin. On the other hand, the heater 18b in each zone of the outer portion 18a of the heating cylinder 18 and the heater 30 of the torpedo 25 are respectively temperature controlled to a set temperature by PID control from a control device (not shown). The stroke zone S of the heating cylinder is cooled by a cooling mechanism and temperature controlled to a set temperature.

The resin material M containing the fibers in the hopper 24 falls by its own weight through the supply cylinder 23 into the space formed by the cylinder 20 of the pushing device 19 operating and the piston 21 being pulled upward, and the heating cylinder 18. Is supplied to the stroke zone S. At this time, the piston 21 rises to the ascending limit, and the resin material M containing fibers for one shot or more is stored in the stroke zone S. The supplied resin material M including the fibers is compressed by the cylinder of the pushing device 19 being operated and the piston 21 being advanced by a set force (cylinder pressure control), and the flow path 29a around the torpedo 21 is compressed. , 29b, only one shot is sent. At this time, the material M containing fibers is sent to the flow path 29b around the torpedo 25 without receiving a large resistance locally by the conical portion 27 on the upper side of the torpedo 25.

The resin material M containing the fibers sent to the flow paths 29a and 29b is melted by heat transfer from the outer portion 18a of the heating cylinder 18 heated by the heater 18b and the cylindrical portion 26 of the torpedo 25 heated by the heater 30. Is promoted. Melting is also promoted by shearing heat generated when the resin pellets pass through the flow path 29b. In particular, the material M including the fibers sent into the flow path 29b is substantially in a molten state at least during the subsequent stay.

In addition, the resin material M containing the fiber that has been melted and stays in the flow paths 29a and 29b until the piston 21 is lowered is further pressed downward by the lowering of the piston 21, and the narrowest portion of the resin material M is pressed. By passing through the flow path 29c, it is completely melted. As described above, the resin material M containing fibers is already melted before reaching the narrowest portion 29c of the flow path 29, and the narrowest flow path 29c has the above-described distance and length in the flow direction. Therefore, even if the fiber contained in the molten resin receives a load at this portion, it is difficult to break. In addition, the resin material is not easily deteriorated because it does not receive excessive shear heat.

Since the state of the fiber in the molten resin melted using the torpedo 25 is not subjected to the shearing force due to the screw rotation as compared with the state of the fiber in the molten resin melted using the screw. The long fiber remains. However, since mixing with a screw is not performed, the use of a screw is often better in terms of fiber dispersion.

The resin material containing fibers that are completely melted using the torpedo 25 and have increased fluidity is transferred to the dispersion supply unit 36 via the flow path 33 of the throttle unit 32 provided between the torpedo 25 and the dispersion supply unit 36. Sent. Since the flow path 33 having a small cross-sectional area is provided in the vertical direction of the heating cylinder 18 in the throttle section 32, heat transfer from the outer section 18a is favorably performed. Then, the molten resin whose fluidity has increased next is pushed into each of the long holes 37 of the dispersion supply unit 36 by the pressure of the upper pushing device 19. As a result, when the molten resin containing massive fibers is dispersed and pushed into the plurality of long holes 37 of the dispersion supply unit 36, a shearing force is applied, but not completely separated, not as much as during screw rotation. Fiber dispersion is promoted. In addition, since the long holes 37 of the dispersion supply unit 36 have the shape and dimensions described above, a certain number or more of the fibers contained in the molten resin are aligned along the flow direction so that the long holes 37 It passes through the flow path 35 (including the narrowest flow path 35a) and is sent into the inner hole 13b of the heating cylinder 13.

And the resin material containing the melted fiber is separately separated once from the flow paths 35 of the plurality of long holes 37, and the molten resin material containing the fiber stored above the screw 14 in the supply hole 15. Fall on the lump. At this time, the filling degree of the molten resin material including the fibers into the supply hole 15 may satisfy a part of the volume, or may satisfy the whole volume below the dispersion supply unit 36. Alternatively, a molten resin material containing string-like fibers may be separately supplied into the groove of the screw 14. And the resin material containing the melted fiber is sent with the inner hole 13b of the heating cylinder 13 facing forward by screw rotation at the time of measurement. In these cases, as shown in FIG. 3, the supply hole 15 is provided eccentrically with respect to the axis O of the screw 14, and the center of the distribution of the long holes 37 of the dispersion supply unit 36 and the axis of the screw 14 are located. Since it is attached in an eccentric manner, the molten resin material containing fibers can be satisfactorily inserted into the inner hole 13b of the heating cylinder 13. The supply hole 15 may be provided on the axis O of the screw 14.

In the present embodiment, the supply of the molten resin material from the plasticizing device 11 to the injection device 12 by the lowering of the piston 21 of the pushing device 19 is performed in accordance with the screw rotation timing at the time of measurement of the injection device 12. However, if the lowering speed of the piston 21 of the push-in device 19 is controlled with priority given to the state of the molten resin material supplied from the plasticizing device 11 to the injection device 12, the injection of the molten resin material from the plasticizing device 11 and the injection are performed. It is difficult to always match the time when the weighing of the device 12 is completed, and the pressure control is easier as described above.

In the above-described embodiment, the plasticizing device 11 has been described as being attached to the position of the general supply hole 15 of the housing portion 16 of the injection device 12. However, the plasticizer 11 may be attached directly between the rear zone and the middle zone of the heating cylinder 13. In that case, the first material sent through the inner hole 13b of the heating cylinder 13 by the screw from the supply hole 15 at the rear of the heating cylinder 13 and the second material including the fiber supplied from the plasticizing device 11 merge. Will be mixed. Therefore, the same screw as the bent type screw is used as the screw, and the screw shaft is provided with the small diameter portion (depressurization portion) again after the large diameter portion (first metering zone) is provided in order from the rear. It is desirable that And the material from the plasticizer 11 is introduce | transduced into a small diameter part (depressurization part).

Next, the outline of another embodiment shown in FIG. 4 will be described focusing on the differences. In FIG. 4, the plasticizing device 51 is a plasticizing means of the plunger type injection device 52. Since the structure itself of the plasticizing apparatus 51 is substantially the same as the structure of the plasticizing apparatus 11 shown in FIG. The plasticizing device 51 is attached to the switching block portion 54 of the plunger device 63 in an oblique direction via a supply pipe 53. The switching block 54 is provided with a rotary valve 55 capable of switching the supply destination of the molten material. When the cylinder 56 which is the drive mechanism of the plasticizing device 51 is operated and the material containing the fibers is pressed by the piston 57, the material containing the fibers is sent forward through the flow path 59 around the torpedo 58, and The resin at the time is melted. Furthermore, by passing through the flow path of the dispersion supply unit 60, the dispersion of the fibers in the molten resin is promoted and the direction of the fibers is rectified. At this time, the rotary valve 55 is in the position shown in FIG. 4, and the sent molten material is temporarily stored in the heating cylinder 61 of the plunger device 63, and the piston 62 of the plunger device 63 moves backward. When a certain amount of molten material is stored in the heating cylinder 61, the rotary valve 55 is rotated so that the plunger device 63 and the nozzle 66 communicate with each other. Next, the piston 62 of the plunger device 63 is moved forward to inject a molten material containing fibers into a mold cavity (not shown). At the time of this injection, the piston 57 of the plasticizing device 51 is retracted, and the resin material M containing fibers to be plasticized next is supplied from the hopper 64 into the heating cylinder 65.

The plasticizing apparatus of the present invention may be further attached to a supply device of an extruder or a stamping molding machine. Even when a plasticizing device is attached to these extruders or the like, the plasticizing device is generally attached to the portion of the supply hole at the rear of the heating cylinder, but it may be attached to an intermediate portion of the heating cylinder. Good. Further, the plasticizing device may be operated only by the plasticizing device by attaching a nozzle or a die to the tip thereof. In the above-described methods of using the various plasticizing apparatuses, the plasticizing apparatus may be arranged in any of the vertical direction, the horizontal direction, and the oblique direction.

The present invention is not enumerated one by one, but is not limited to the above-described embodiment, and those combined with the above descriptions and those modified by a person skilled in the art based on the spirit of the present invention, It goes without saying that it applies.

Moreover, about the fiber supplied to the plasticizer 11, it is not limited to carbon fiber, Other glass fibers etc. may be used. Moreover, although the length of the fiber supplied is not limited, it is desirable to select from commercialized ones, and it is about 3 to 30 mm as an example. Further, the resin material melted by the plasticizing apparatus is not limited to the thermoplastic resin, and in the case of the resin material, a thermosetting material may be used. The material to be melted may be a metal material, a ceramic material, various naturally derived materials, or the like. Further, the shape of the material to be melted is not limited, but when a pellet is used, it may be any of a spherical shape, a cylindrical shape close to a spherical shape, and other shapes. The particle diameter when the pellet is spherical or nearly spherical is not limited to this, but is about 1 to 8 mm in diameter. Also in the case of a cylindrical shape, the length (diameter) in the short side direction is not limited to this, but is about 1 to 8 mm. Further, the material to be supplied may be a pellet containing a fiber material. In this case, the type of the fiber material is not limited, but the shape of the pellet is preferably within the above range. The fiber to be supplied and the material to be melted are not limited to one type, and a coloring material and a foam material may be supplied simultaneously. The plasticizing device 11 can also be used for molding a resin material that does not use fibers.

11, 51 Plasticizing device 12 Injection device 13, 18, 61, 65 Heating cylinder 14 Screw 18a Outer portion 19 Pushing device 25, 58 Torpedo 29, 29a, 29b, 33, 35 Flow path 29c, 35a Flow path in the narrowest part 32 Drawing part 36, 60 Dispersion supply part M Material containing fiber

Claims (4)

In a plasticizing apparatus that passes a material containing fibers through a flow path around a torpedo to promote melting of the material,
A plasticizing apparatus comprising a dispersion supply unit provided with a plurality of flow paths on the downstream side of a torpedo. As a part of the flow path around the torpedo, the narrowest part of the flow path is provided over the entire outer periphery of the torpedo,
The distance between the torpedo in the narrowest flow path and the outer portion of the heating cylinder is equal to or less than the particle size of the pellet or the length in the short side direction when the supplied material includes pellets. 2. The plasticizing apparatus according to 1. The narrowest channel is provided as part of the plurality of channels of the dispersion supply unit,
The diameter in the direction orthogonal to the flow direction of the material or the length in the short side direction in the flow path of the narrowest part is equal to or less than the length of the supplied fiber. Plasticizing equipment. The diameter of the flow path between the torpedo and the dispersion supply unit, the diameter or the cross-sectional area of the torpedo is provided with a throttle part smaller than the diameter or the cross-sectional area of the torpedo. Item 4. The plasticizing apparatus according to any one of Items 3.

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