JP2016108685A - Non-woven fabric production apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-woven fabric production apparatus which avoids an increase of cost and deterioration of efficiency by providing a deep support mechanism and increases workability and safety.SOLUTION: A support mechanism 5 is provided which supports a die 2 and moves the die 2 to adjust a distance between it and a collector 4 and as resin supply means 3, a flexible heat-resistant tube 6 is provided which is a tube for molten resin flow connected with the die 2 and deforms along with moves of the die 2 by the support mechanism 5. As hot air supply means 7, a flexible heat-resistant tube 8 is provided which is a tube for hot air flow connected with the die 2 and deforms along with moves of the position of the die by the support mechanism 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a nonwoven fabric manufacturing apparatus for manufacturing a nonwoven fabric by discharging and accumulating thermoplastic molten resin from a die nozzle.

  The melt-blowing method for producing nonwoven fabric is generally stretched into a filament shape by spraying a thermoplastic molten resin extruded from the nozzle head of a die with hot air, and accumulated on a conveyor to form a web by its self-bonding property. Melt spinning method (see, for example, Patent Documents 1 to 4). As shown in FIG. 7, a conventional typical melt blown nonwoven fabric manufacturing apparatus 101 melts a resin and supplies it to the die 2 and discharges the molten resin in a filament form from the nozzle (discharge port 20a) of the die 2. L1, a hot air line L2 for supplying hot air for drawing the filament-shaped molten resin discharged from the nozzle tip (discharge port 20a), a collector 4 for accumulating fibers to form a nonwoven fabric, and a winder 10.

  In the figure, reference numeral 31 denotes an extruder as the resin supply means 3 constituting the polymer line L1, and reference numeral 32 also denotes a gear pump as the resin supply means 3. Reference numeral 71 denotes a compressor as the hot air supply means 7 constituting the hot air line L2. The filament is normally discharged from the nozzle of the die 2 placed above the collector 4 toward the fiber accumulation surface 40 of the lower collector 4.

  By the way, the distance between the discharge port 20a of the die 2 and the fiber accumulation surface 40 of the collector 4 is an important condition that affects the properties of the nonwoven fabric. For example, when making a non-woven fabric having a texture such as paper, it is necessary to set this distance small and allow the fibers to be accumulated on the fiber accumulation surface 40 before the fibers are completely hardened, thereby firmly fusing the fibers together. On the other hand, when making a cotton-like non-woven fabric, it is necessary to set the distance large and solidify the fiber before reaching the fiber accumulation surface 40 so that the fibers do not fuse. Also, if the type of resin used changes, the melting point and discharge temperature also change, and the distance until solidification also changes. Therefore, it is necessary to set the optimum distance depending on the type of resin.

  Therefore, it has been carried out so that this distance can be freely adjusted. Since the die 2 side has a polymer line L1 for supplying a high-temperature molten resin and a hot air line L2 for supplying hot air as described above, the die 2 has a robust structure that can withstand high temperatures, and further maintenance work is required. The strength design takes into consideration the work space and safety, and the overall weight is heavy. If you move it, it will become a large-scale move that moves the entire floor, and it cannot be moved easily. Therefore, conventionally, the distance is adjusted by moving the collector 4 side.

JP-A-2-289107 Japanese Patent Laid-Open No. 9-49111 JP 2002-38326 A JP 2006-83511 A

  However, on the collector 4 side, the conveyor rollers 46 and 47, the driving roller 43, the guide roller 44, the tension roller 45, the conveyor belt 41 that is driven by this and functions as the fiber accumulation surface 40, the suction box 42 for suction, and the like. Although it is a facility that is much smaller and lighter than the equipment on the die 2 side, if an adjustment mechanism that moves them all up and down is provided, a heavy support mechanism and space are still required. .

  Further, the range of adjustment is normally required to be about 10 to 600 mm, and considering the workability on the upper surface side of the collector, the height of the nozzle outlet 20a of the die is 1.6 from the upper surface of the collector 4 (fiber accumulation surface 40). It will be about -1.8m, and the polymer line L1 and the hot air line L2 will also be installed above the height of about 2m from the floor. Accordingly, maintenance of the polymer line and hot air line and maintenance of the collector and the like are almost impossible on the same floor, and there are problems in workability and safety.

  Further, in the case of constituting an apparatus for producing a composite nonwoven fabric in which two or more layers of nonwoven fabrics having different fiber diameters are laminated, a plurality of the dies facing the fiber accumulation surface are provided along the web transfer direction of the fiber accumulation surface of the collector. The polymer lines and hot air lines are provided for each die. When the type of nonwoven fabric of each layer is changed in such a composite nonwoven fabric manufacturing apparatus, it is necessary to individually adjust the above-mentioned distance between each die and the collector. In this case, the collector is moved. In reality, it is not possible to achieve this, and eventually it is necessary to re-install the equipment on the die side or make extensive adjustments, which takes time and costs.

  Therefore, in view of the above-described situation, the present invention intends to solve a non-woven fabric manufacturing apparatus that can avoid cost reduction and efficiency reduction by providing a heavy support mechanism, and can improve workability and safety. The point is to provide.

  As a result of diligent investigations to solve the above-mentioned problems, the present inventor uses a flexible heat-resistant tube as a connecting part to a die for a polymer line and a hot air line, which have conventionally been known to be robust to withstand high temperatures. Thus, it has become possible to move only the die, thereby finding that the above problems can be solved, and the present invention has been completed.

  That is, the present invention relates to a die having a nozzle row for extruding a thermoplastic resin, resin supply means for supplying the molten thermoplastic resin to the die, and a fibrous thermoplastic resin discharged from the nozzle row of the die And a collector for forming a web by its self-bonding property, and a support mechanism for supporting the die and adjusting the distance between the collector by moving the die, and providing the resin A non-woven fabric manufacturing apparatus, characterized in that a flexible heat-resistant tube that deforms following the movement of the die by the support mechanism is provided as a supply means, which is a molten resin distribution tube connected to the die. provide.

  Here, it is preferable that the support mechanism includes a unit that can adjust the distance between the nozzle discharge port of the die and the fiber accumulation surface of the collector.

  Moreover, it is preferable that the flexible heat-resistant pipe is provided with a temperature adjusting means for adjusting the temperature of the molten resin flowing through the inside wall of the pipe.

  Further, it is preferable that the support mechanism is provided with a rotation mechanism that allows the die to be rotated in parallel with the fiber accumulation surface of the collector so that the direction in which the nozzle row faces can be adjusted.

  Further, a hot air supply means for supplying hot air to the thermoplastic resin extruded from the nozzle row of the die and extending into a fiber shape is provided, and the hot air supply means is a pipe for circulating hot air connected to the die. It is preferable to provide a flexible heat-resistant tube that deforms following the movement of the die position by the support mechanism.

  Further, along the web transfer direction of the fiber accumulation surface of the collector, a plurality of the dies opposed to the fiber accumulation surface are provided, the support mechanism is provided for each die, and the resin supply means is provided for each die. What provided the flexible heat-resistant tube is preferable.

  According to the nonwoven fabric manufacturing apparatus according to the present invention as described above, a support mechanism is provided that supports the die and allows the distance between the collector and the collector to be adjusted, and is connected to the die as a resin supply means. Since a flexible heat-resistant tube that deforms following the movement of the die by the support mechanism is provided, the die constituting the polymer line can be made independent of the resin supply means. It is possible to provide the flexible heat-resistant tube at a free position as long as it can be deformed. Therefore, only the die can be moved by the support mechanism and the distance from the collector can be adjusted.

  Therefore, it is not necessary to move the entire polymer line including the die, and it is also possible to avoid moving the heavy collector side as well, and move only the die that is lighter and requires less support strength. The resin supply means and collectors such as extruders, gear pumps, and pipes that occupy most of the polymer line can also be installed on the same floor, avoiding high costs and reduced efficiency, and improving workability and safety it can.

  Further, since the die support mechanism includes means for adjusting the distance between the nozzle discharge port of the die and the fiber accumulation surface of the collector, accurate adjustment according to the type of resin can be performed. .

  In addition, since the flexible heat-resistant pipe is provided with a temperature adjusting means for adjusting the temperature of the molten resin flowing through the inner wall of the pipe, it is possible to accurately control the resin temperature to be supplied as in the conventional metal pipe. Is possible.

  In addition, since the support mechanism is provided with a rotation mechanism that allows the die to rotate in parallel with the fiber accumulation surface of the collector and adjusts the direction in which the nozzle row faces, the width of the nonwoven fabric to be manufactured is adjusted. Can do. When such a rotation mechanism is provided, it is necessary to devise a seal at the connection portion with the polymer line die. However, if the flexible heat-resistant tube according to the present invention is used, the flexible heat-resistant tube itself is deformed. As a result, the rotation of the die is allowed, so that a rotary seal structure is not required, which can be realized more simply and at low cost.

  Further, a hot air supply means for supplying hot air to the thermoplastic resin extruded from the nozzle row of the die and extending into a fiber shape is provided, and the hot air supply means is a pipe for circulating hot air connected to the die. Since the flexible heat-resistant tube that deforms following the movement of the die position by the support mechanism is provided, the die can be moved independently from the hot air line (hot air supply means) even in the melt blow type apparatus. As with the polymer line, the hot air line can be installed on the same floor as the collector, so that cost and efficiency reduction can be avoided, and workability and safety can be improved.

  Further, along the web transfer direction of the fiber accumulation surface of the collector, a plurality of the dies opposed to the fiber accumulation surface are provided, the support mechanism is provided for each die, and the resin supply means is provided for each die. Since a flexible heat-resistant tube is provided, when configured as a manufacturing device for making composite nonwoven fabric, the above-mentioned distance adjustment is individually performed between each die and the collector, and the type of nonwoven fabric of each layer is changed Therefore, it is possible to easily cope with low cost.

Explanatory drawing which shows the whole structure of the nonwoven fabric manufacturing apparatus which concerns on 1st Embodiment of this invention. (A) is the front view which abbreviate | omitted the collector side of the nonwoven fabric manufacturing apparatus similarly, (b) is also a side view. Explanatory drawing which shows the principal part of the nonwoven fabric manufacturing apparatus which concerns on 2nd Embodiment of this invention. Explanatory drawing which shows the principal part of the nonwoven fabric manufacturing apparatus which concerns on 3rd Embodiment of this invention. (A) The side view which abbreviate | omitted the collector side of the nonwoven fabric manufacturing apparatus which concerns on 4th Embodiment of this invention, (b) Similarly front view. (A) is a top view similarly, (b) is AA sectional drawing of FIG.5 (b). Explanatory drawing which shows the whole structure of the conventional nonwoven fabric manufacturing apparatus.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, although the following description demonstrates the melt blown nonwoven fabric manufacturing apparatus which has a hot air line, it is not limited to this.

  First, based on FIG.1 and FIG.2, 1st Embodiment of the nonwoven fabric manufacturing apparatus which concerns on this invention is described.

  As shown in FIGS. 1 and 2, the nonwoven fabric manufacturing apparatus 1 according to this embodiment includes a die 2 having a nozzle row 20 for extruding a thermoplastic resin, and a resin supply that supplies the molten thermoplastic resin to the die 2. Means 3, hot air supply means 7 for supplying hot air to the thermoplastic resin extruded from the nozzle row 20 of the die 2 and drawing it into a fiber shape, and fibrous thermoplastic resin discharged from the nozzle row 20 of the die 2 And a collector (fiber accumulating device) 4 for accumulating and forming a web by its self-bonding property.

  Further, a support mechanism 5 is provided which supports the die 2 and can adjust the distance from the collector 4 by moving the die 2, and a molten resin flow connected to the die 2 as the resin supply means 3. A flexible heat-resistant tube 6 that is deformed following the movement of the die 2 by the support mechanism 5 is provided. Further, as the hot air supply means 7, a hot air distribution tube connected to the die 2 is provided. There is provided a flexible heat-resistant tube 8 that deforms following the movement of the die position by the support mechanism 5.

  As a result, the die 2 can be provided at any position as long as the flexible heat-resistant tubes 6 and 8 can be deformed independently of the resin supply means 3 and the hot air supply means 7. Only 2 is moved, and it is comprised so that the distance between the collectors 4 can be adjusted.

  The die 2 is a T-die that uniformly distributes the molten thermoplastic resin (molten resin) supplied by the resin supply means 3 toward the nozzle row 20, and hot air supply means 7 is provided on both sides of the nozzle row 20. An air slit (not shown) through which hot air supplied by the air blows out is provided. The present invention is not limited to the die having such a structure. A large number of pores (discharge ports 20a) of the nozzle row 20 are arranged in a direction perpendicular to the cross section of the die 2, and hot air slits (blowing ports) (not shown) are formed on both sides of the discharge port 20a. It is provided in parallel. Of course, the nozzle row 20 is not limited to a single row and may be a plurality of rows.

  The molten resin pushed out from each discharge port 20a of the nozzle row 20 is stretched by high-speed hot air blown so as to sandwich the discharge port 20a from the slits on both sides, and becomes a fine fiber. In this way, the molten resin exits from each discharge port 20a and is drawn into a fiber, and then is accumulated on the conveyor belt 41 of the collector 4 to form a nonwoven web 9.

  The support mechanism 5 includes an elevating drive unit 51 that moves the die 2 in the vertical direction and an elevating guide unit 52 that moves the die 2 up and down while maintaining the horizontal posture. In this example, a wire winding device 53 that supports the die 2 so as to be able to be pulled up from above the die 2 is provided as the lifting drive unit 51, and the lifting guide unit 52 is integrally fixed to the die, and the nozzle row direction of the die A pair of guide shafts 55 that pass through a pair of cylindrical portions 54 protruding outward from the left and right side end surfaces in the vertical direction and guide the die in a stable horizontal posture in the vertical direction via the cylindrical portions 54. Is provided.

  More specifically, a vertical frame 56 extending in the vertical direction on the rear surface side opposite to the web transfer direction by the collector with respect to the die, and an upper frame 57 projecting from the upper end or midway to the upper surface side of the die. The upper frame 57 is provided with a wire winding device 53 as an elevating drive unit 51, and an upper end is fixed to the upper frame 57, and a guide shaft 55 is erected in parallel with the vertical frame 56. ing. The lower end portion of the guide shaft 55 may be fixed to the floor, or may be fixed to the lower frame 58 on which the vertical frame 56 is erected as in this example. The support frame 50 is not limited to this. For example, the vertical frame 56 may be omitted and the upper frame 57 may be directly attached to the ceiling side.

  As for the lift drive unit 51, the wire winding device 53 that winds the wire electrically is provided in this example, but a device for winding with a chain may be provided, or a manual winding device may be used. That is, as long as the die 2 can be moved up and down, there is no particular limitation on the type thereof, and various lifting drive means such as hydraulic or air cylinders can be used. This example is also an example of the raising / lowering guide part 52, and various guiding means can be used as long as the die 2 can be raised and lowered in a stable horizontal posture. In addition, for example, as in a fourth embodiment described later, it is also preferable that the elevating drive unit 51 also serves as the elevating guide unit 52.

  The elevating drive unit 51 is also preferably provided with a limit switch (not shown) to detect the vertical position of the die and to automatically control the drive. Specifically, the adjustment of the position of the die 2 by the elevating drive unit 51 is based on the distance between the height position of the nozzle outlet 20 a of the die 2 and the position of the fiber accumulation surface 40 of the collector 4, and the upper surface of the conveyor belt 41. This is done by adjusting the height position of the nozzle discharge port 20a. A scale or mark indicating the height may be provided on the vertical frame, and the lifting drive unit 51 may be manually operated while viewing the position of the die with the eyes.

  The resin supply means 3 includes an extruder 31 that melts and extrudes the thermoplastic resin, a filter (not shown) that removes foreign matter, and a gear pump (quantitative supply machine) 32 that continuously sends a fixed amount of molten resin to the die 2. The flexible heat-resistant tube 6 is provided between the gear pump 32 and the die 2 and supplies the molten resin discharged from the gear pump 32 to the die 2. The resin supply means 3 and the die 2 constitute a polymer line L1.

  The flexible heat-resistant tube 6 is a pipe that has flexibility to deform following the movement of the die 2 by the support mechanism 5 and has heat resistance to withstand the temperature of the molten resin. The flexible heat-resistant tube 6 has a built-in heater as temperature adjusting means for adjusting the temperature of the molten resin flowing through the inner wall of the tube. As a result, the molten resin having the optimum temperature can be supplied to the die 2 and the molten resin can be prevented from solidifying inside such as when the operation is stopped.

  The hot air supply means 7 includes a compressor 71 and a flexible heat-resistant pipe 8 that is provided between the compressor 71 and the die 2 and supplies compressed air discharged from the compressor 71 to the die 2. A heater device may be interposed on the way. The hot air supply means 7 and the die 2, particularly the slit (not shown) for blowing hot air from both sides across the nozzle row 20 constitute a hot air line L 2.

  The flexible heat-resistant tube 8 is a pipe that has the flexibility to deform following the movement of the die 2 by the support mechanism 5 like the flexible heat-resistant tube 6 and has heat resistance that can withstand the temperature of hot air. is there. The flexible heat-resistant tube 8 may also have a built-in heater that heats compressed air flowing through the inner wall of the tube.

  The collector 4 includes a mesh-shaped conveyor belt 41 that becomes the fiber accumulation surface 40 and a suction box 42 that sucks air on the upper surface side of the belt from the back surface side. The molten resin exiting from the nozzle row 20 of the die 2 is stretched by hot air from the slits and is accumulated on the conveyor belt 41 as a fiber stream. The conveyor belt 41 travels in the direction of the arrow by a driving roller 43, a guide roller 44, a tension roller 45, and conveyor rollers 46 and 47.

  The polymer fiber stream accumulated on the conveyor belt 41 becomes a non-woven web 9, is discharged from the collector 4, and is wound by the winder 10 through a calendar roll (not shown). The suction box 42 is provided to ensure the accumulation of the fiber stream on the conveyor belt 41 and to cool the accumulated fiber stream, and is configured to suck air by the blower 48.

  Next, a second embodiment of the present invention will be described based on FIG.

  In the nonwoven fabric manufacturing apparatus 1 of the present embodiment, the support mechanism 5 rotates the die 2 in parallel with the fiber accumulation surface 40 of the collector 4, and the direction in which the nozzle row 20 faces the fiber accumulation surface 40 (discharge port). A rotation mechanism 11 is provided that can adjust the direction in which the two are arranged. Accordingly, the angle of the die 2 can be changed in a direction inclined with respect to the web width direction orthogonal to the moving direction of the conveyor belt, and the width dimension of the formed web can be adjusted to a dimension according to the angle of the die 2. It becomes.

  The rotating mechanism 11 is provided above the die 2 with a support member 12 in which the above-described cylindrical portion 54 guided up and down along the guide shaft 55 is fixed to the left and right. Is provided with a motor 13 with an angle adjusting function for rotating the hanger in a suspended state. The lifting drive unit 51 supports the support member 12 so that it can be lifted from above, thereby driving the die 2 up and down via the support member 12 and the motor 13.

  The rotation mechanism 11 is sufficient if it can simply rotate the die horizontally, and there is no need to provide a polymer line or hot air line seal structure. Therefore, according to the present invention, such a form of rotating the die can be easily realized. The rotation mechanism 11 is an example, and various forms are possible as long as the mechanism rotates the die. For example, a mechanism that manually rotates without using a motor or the like may be provided. Other configurations and modifications are basically the same as those in the first embodiment. The same structures in the drawings are denoted by the same reference numerals and description thereof is omitted.

  Next, a third embodiment of the present invention will be described based on FIG.

  The nonwoven fabric manufacturing apparatus 1 of the present embodiment provides a plurality of dies 2 facing the fiber accumulation surface 40 along the web transfer direction of the fiber accumulation surface 40 of the collector 4, and provides a support mechanism 5 for each die 2. Each die 2 is configured as a composite nonwoven fabric manufacturing apparatus provided with a flexible heat-resistant tube 6 as the resin supply means 3 and a flexible heat-resistant tube 8 as the hot air supply means 7.

  Since the distance between each die 2 and the fiber accumulation surface 40 of the collector can be individually adjusted, various composite nonwoven fabrics can be manufactured, and an adjustment function that cannot be realized by raising and lowering the collector 4 side as in the prior art Can be realized. Other configurations and modifications are basically the same as those in the first embodiment. The same structures in the drawings are denoted by the same reference numerals and description thereof is omitted.

  Next, based on FIG.5 and FIG.6, 4th Embodiment of this invention is described.

  The nonwoven fabric manufacturing apparatus 1 of the present embodiment is changed to the feed screw 14 in which the left and right guide shafts 55 of the first embodiment are rotationally driven, and the tubular member 54 is screwed into the feed screw 14. The wire winding device 53 as the raising / lowering drive unit 51 is changed to the driving means 16 that rotationally drives the feed screw 14 in a synchronized state. That is, the elevating guide portion 52 composed of the feed screw 14 and the nut member 15 is configured to also serve as the elevating drive portion 51.

  Each feed screw 14 is rotatably supported by a pair of bearings 57a, 58a provided on the upper frame 57 and the lower frame 58, respectively. Further, sprockets 14b and 14b are provided at the same height, in the present example, at the upper ends protruding upward from the upper frame 57, respectively, and the timing chains 14c spanned between the sprockets 14b and 14b are connected to each other. Synchronized.

  One feed screw 14 is provided with a drive motor 17 that rotationally drives the feed screw 14. Specifically, a sprocket 14d is provided at an appropriate position of the feed screw 14, in this example, near the lower end, and the feed screw 14 is connected to the sprocket 17a on the drive motor 17 side via a drive chain 17b. Driven by rotation. Thus, by connecting the feed screws 14 and 14 and between the feed screw 14 and the drive motor 17 via the chains 14c and 17b, respectively, the heat of the die 2 that becomes high temperature is hardly transmitted to the drive motor 17. It has been devised. Even when a manual handle is provided in place of the drive motor 17, workability is improved by adopting such a structure in which heat is not easily transmitted.

  Also, as for the die 2 and the nut member 15, since the heat of the die 2 is easily transmitted to the feed screw 14 when directly attached, the nut member 15 is fixed to the left and right of the support member 18 disposed above the die 2, The support member 18 is indirectly fixed to the upper surface side of the die 2 via bolt members 19.

  Other configurations and modifications are basically the same as those in the first embodiment. The same structures in the drawings are denoted by the same reference numerals and description thereof is omitted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Nonwoven fabric manufacturing apparatus 2 Die 3 Resin supply means 4 Collector 5 Support mechanism 6 Flexible heat resistant tube 7 Hot air supply means 8 Flexible heat resistant tube 9 Web 10 Winder 11 Rotating mechanism 12 Support member 13 Motor 14b Sprocket 14c Chain 14d Sprocket 15 Nut member 16 Drive means 17 Drive motor 17a Sprocket 17b Chain 18 Support member 19 Bolt material 20 Nozzle array 20a Discharge port 31 Extruder 32 Gear pump 40 Fiber accumulation surface 41 Conveyor belt 42 Suction box 43 Drive roller 44 Guide roller 45 Tension Roller 46 Conveyor roller 48 Blower 50 Support frame 51 Lifting drive part 52 Lifting guide part 53 Wire winding device 54 Cylindrical part 55 Guide shaft 56 Vertical frame 57 Upper frame 58 Lower frame 71 Compressor L1 Polymer line L2 Hot air line

Claims (6)

A die having a nozzle row for extruding a thermoplastic resin;
A resin supply means for supplying the molten thermoplastic resin to the die;
A fibrous thermoplastic resin discharged from the nozzle row of the die, and a collector for forming a web by its self-bonding property,
A support mechanism is provided that supports the die and allows the distance between the collector to be adjusted by moving the die,
Nonwoven fabric production characterized in that a flexible heat-resistant tube that deforms following the movement of the die by the support mechanism is provided as the resin supply means, which is a molten resin distribution tube connected to the die. apparatus.   The nonwoven fabric manufacturing apparatus according to claim 1, wherein the support mechanism includes means for adjusting a distance between a nozzle discharge port of the die and a fiber accumulation surface of the collector.   The nonwoven fabric manufacturing apparatus according to claim 1 or 2, wherein the flexible heat-resistant tube is provided with temperature adjusting means for adjusting the temperature of the molten resin flowing through the inner wall of the tube.   4. The rotating mechanism according to any one of claims 1 to 3, wherein the supporting mechanism is provided with a rotating mechanism that allows the die to rotate in parallel with the fiber accumulation surface of the collector so that the direction in which the nozzle row faces can be adjusted. The nonwoven fabric manufacturing apparatus as described. Comprising hot air supply means for supplying hot air to the thermoplastic resin extruded from the nozzle row of the die and drawing it into a fiber;
The flexible hot-resistant pipe which is a hot-air distribution pipe connected to the die and which deforms following the movement of the position of the die by the support mechanism is provided as the hot-air supply means. The nonwoven fabric manufacturing apparatus of any one.   A plurality of the dies facing the fiber accumulation surface are provided along the web transfer direction of the fiber accumulation surface of the collector, the support mechanism is provided for each die, and the resin supply means is flexible for each die. The nonwoven fabric manufacturing apparatus of any one of Claims 1-5 provided with a heat resistant heat pipe.

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