WO2019187887A1 - Dispositif d'étirement ainsi que dispositif de fabrication et procédé de fabrication de fibre et de bande de fibres - Google Patents

Dispositif d'étirement ainsi que dispositif de fabrication et procédé de fabrication de fibre et de bande de fibres Download PDF

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Publication number
WO2019187887A1
WO2019187887A1 PCT/JP2019/007201 JP2019007201W WO2019187887A1 WO 2019187887 A1 WO2019187887 A1 WO 2019187887A1 JP 2019007201 W JP2019007201 W JP 2019007201W WO 2019187887 A1 WO2019187887 A1 WO 2019187887A1
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Prior art keywords
yarn
passage
airflow
sectional area
airflow passage
Prior art date
Application number
PCT/JP2019/007201
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English (en)
Japanese (ja)
Inventor
田村知樹
山本拓
箭内勝文
Original Assignee
東レ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to JP2019514048A priority Critical patent/JP6965922B2/ja
Priority to CN201980019338.2A priority patent/CN111868312B/zh
Priority to KR1020207026557A priority patent/KR102391138B1/ko
Publication of WO2019187887A1 publication Critical patent/WO2019187887A1/fr

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/222—Stretching in a gaseous atmosphere or in a fluid bed
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding

Definitions

  • the present invention relates to a stretching apparatus, and a fiber and fiber web manufacturing apparatus and manufacturing method using the stretching apparatus.
  • Patent Document 1 discloses an open drawing apparatus.
  • gas is blown out into a passage in which an inlet for sucking a yarn group pushed out from a spinneret and an outlet for discharging a yarn group sucked from the inlet are formed, and a gas flow in a suction direction is formed.
  • a stretching device provided with a divergent portion in which the passage width on the outlet side is wider than the passage width on the inlet side between the gas injection port and the outlet of the passage. Has been.
  • the velocity of the mixed flow of the gas flow (primary gas flow) generated by being supplied from the injection port to the passage and the gas flow (secondary gas flow) generated by being sucked into the passage from the inlet of the passage The amount of decrease is reduced and the yarn swing in the passage is suppressed, and the secondary gas flow rate is increased, so even if the primary gas flow rate is the same, the spinning tension and spinning of the yarn group are the same. Speed can be increased and energy efficiency can be increased.
  • Patent Document 2 discloses a stretching apparatus in which the space from the spinneret to the cooling chamber and the stretching apparatus is a closed system.
  • the connection between the cooling chamber and the stretching device is closed with respect to the surroundings (a closed system in which air does not flow in and out), and at least one diffuser (flow passage restriction) is provided downstream of the stretching device. It has been proposed to provide widening. When this drawing apparatus is used, the spinning speed of the filament can be increased and a thinner filament can be obtained.
  • JP 2002-371428 A Japanese Patent No. 3704522
  • a region having a constant passage width between the gas injection port and the divergent portion is set to 1 to 10 of the passage width. It is preferably provided in the range of double (path length in the embodiment: 3 to 30 mm). That is, the idea of shortening the passage length (hereinafter referred to as a passage x) in a region having a constant passage width and increasing the passage length (hereinafter referred to as a passage y) at the divergent portion is disclosed.
  • the stretching apparatus of Patent Document 2 since the diaphragm is used and the throttle is provided in the middle of the flow path, the pressure loss increases in the throttle part, and sufficient gas cannot be supplied. Therefore, the high wind speed condition cannot be obtained, and it may be difficult to manufacture a fine filament. Furthermore, in the apparatus of Patent Document 2, the cooling chamber and the stretching apparatus become a closed system, and the filament is stretched in the stretching apparatus using the airflow supplied from the cooling chamber. There are restrictions on the amount of airflow that can be supplied, which may result in insufficient cooling of the filament. In addition, when a yarn is manufactured for a long time, filaments may accumulate on the narrowed portion, resulting in unevenness of the sheet.
  • an object of the present invention is to provide a drawing device capable of efficiently producing a pulling force on a yarn and capable of producing a yarn having a fineness with energy saving and stably.
  • Another object of the present invention is to provide a fiber and fiber web manufacturing apparatus and method using such a stretching apparatus.
  • the present invention has any one of the following configurations.
  • a passage having an inlet and an outlet for a yarn obtained by melt spinning a thermoplastic polymer an air stream is blown inward from the outside of the running path of the yarn to stretch the yarn.
  • the passage having the inlet and the outlet of the yarn includes the first airflow passage, the airflow injection port, the second airflow passage, the third airflow passage, and the fourth airflow passage with respect to the yarn traveling direction.
  • a stretching apparatus which is continuously provided in this order and satisfies the following (i) to (iv):
  • the third airflow passage has a constant flow path cross-sectional area with respect to the yarn traveling direction.
  • the second airflow passage has a flow passage cross-sectional area smaller than that of the third airflow passage, and the flow passage cross-sectional area is constant and / or gradually increased with respect to the yarn traveling direction.
  • the fourth airflow passage has a flow passage cross-sectional area larger than that of the third airflow passage, and the flow passage cross-sectional area is constant and / or gradually increased with respect to the yarn traveling direction.
  • the length L 2 of the yarn running direction of the second air flow passage, the length of the third and the yarn running direction of the length L 3 of the air flow passage, the yarn running direction of the fourth air flow path L 4 satisfies the following relational expression.
  • the passage having the yarn inlet and outlet is formed by a pair of opposed outer wall members, and one passage forming surface of the pair of outer wall members is separated from the second airflow passage in the yarn traveling direction.
  • the stretching apparatus according to any one of (1) to (3), wherein a space between the fourth airflow path and the fourth airflow path is formed as a continuous single plane parallel to the yarn traveling direction.
  • a fiber manufacturing apparatus having a spinneret, a cooling device for spun yarn, and a drawing device according to any one of (1) to (4) in the yarn traveling direction in this order. .
  • a yarn is formed by melt spinning a thermoplastic polymer from a spinneret, and the yarn is cooled and solidified, and then the yarn is stretched by the drawing apparatus according to any one of (1) to (4).
  • a method for producing a fiber A method for producing a fiber web, wherein a fiber web is produced using the apparatus according to any one of (1) to (6).
  • the “passage” refers to an airflow passage formed by an outer wall member that surrounds the outer side of the yarn travel path and having an inflow port and an outflow port that are open to the outside, in the following order: It is comprised by the continuous 1st airflow path, the airflow injection port, the 2nd airflow path, the 3rd airflow path, and the 4th airflow path.
  • the “inlet” refers to an opening that is disposed on the most upstream side in the yarn traveling direction of the passage and is open to the outside.
  • the “outlet” refers to an opening that is disposed on the most downstream side in the yarn traveling direction of the passage and is open to the outside.
  • the term “upstream” refers to a side closer to the spinneret in the main yarn traveling direction in which the thermoplastic polymer discharged from the spinneret is solidified by cooling and becomes a yarn.
  • the “downstream” means a side farther from the spinneret in the traveling direction of the main yarn that becomes a yarn by cooling and solidifying the thermoplastic polymer discharged from the spinneret.
  • the “air flow injection port” refers to an opening provided in the passage and through which gas is injected.
  • the “first airflow passage” means a portion from the inlet to the upstream end of the airflow injection port in the passage
  • the “second airflow passage” means an airflow in the passage. This refers to the interval from the downstream end of the injection port to the upstream end of the third airflow passage.
  • the “third airflow passage” refers to a portion of the passage that exists between the second airflow passage and the fourth airflow passage and has a constant cross-sectional area with respect to the yarn traveling direction.
  • the “fourth airflow passage” refers to a portion of the passage from the downstream end of the third airflow passage to the outlet.
  • the “minimum flow path cross-sectional area H 2MIN of the second air flow passage” means a flow break at a position in the second air flow passage where the cross-sectional area in the direction perpendicular to the running direction of the yarn is minimum. It refers to the area.
  • the “maximum flow path cross-sectional area H 4MAX of the fourth airflow path” means a flow path cross-sectional area at a position where the cross-sectional area in the direction perpendicular to the running direction of the yarn is maximum in the fourth airflow path.
  • the “flow passage cross-sectional area H 3 of the third airflow passage” refers to a flow passage cross-sectional area of the third airflow passage in a direction perpendicular to the yarn traveling direction.
  • the drawing device of the present invention by relatively elongating the section where the pulling force can be applied to the yarn, the yarn pulling effect in the drawing device is sufficiently expressed even if the gas supply amount is small. As a result, stable operation with energy saving becomes possible. Further, since the traction force can be sufficiently expressed, the spinning speed can be improved, and a yarn having a small single yarn fineness can be obtained. And when manufacturing a fiber web from the fiber obtained by doing in this way, it becomes possible to obtain the fiber web with a favorable texture with the reduction
  • FIG. 1 is an overall schematic cross-sectional view of a spinning device including a stretching device according to an embodiment of the present invention. It is a schematic sectional drawing of the extending
  • FIG. 1 is an overall schematic longitudinal sectional view of a spinning device provided with a stretching apparatus according to an embodiment of the present invention
  • FIG. 2 is a schematic longitudinal sectional view of the stretching apparatus used in FIG.
  • FIG.3, FIG.4, FIG.8 is a schematic longitudinal cross-sectional view of the other preferable form of the extending
  • the stretching apparatus of the present invention is used in, for example, a nonwoven fabric manufacturing apparatus, which, as shown in FIG. 1, captures fibers in a web shape on a spinneret 1, a cooling device 19, a stretching apparatus 3, and a moving net. Consists of a conveyor 4 and the like to collect. Although not shown, a mechanism for thermally bonding the fiber web is also provided on the downstream side of the conveyor 4.
  • thermoplastic polymer melt-spun from the spinneret 1, and the obtained yarn 2 is cooled by the cooling device 19 and then stretched by the stretching device 3 with tension applied.
  • the yarn 2 is then sprayed from the stretching device 3 onto the net of the conveyor 4 to form a fiber web on the conveyor 4.
  • a region where the yarn travels in the stretching device 3 a long rectangular region that is very long in the machine width direction (the depth direction of the drawing in FIG. 1) is formed.
  • the stretching device 3 has an airflow passage 9 that is sandwiched between outer wall members 5 from the upstream side to the downstream side in the yarn traveling direction, and an upstream end portion of the airflow passage 9.
  • the airflow passage 9 includes a first airflow passage 10 located downstream of the inflow port 14 in the yarn traveling direction, an airflow injection port 7 that communicates with the first airflow passage 10 and blows an airflow onto the yarn, and an airflow injection port. 7, the second airflow passage 11 located downstream in the yarn running direction, the third airflow passage 12 located downstream in the yarn running direction of the second airflow passage 11, and the downstream side of the third airflow passage 12.
  • the third airflow passage 12 has a constant flow path cross-sectional area in a direction perpendicular to the yarn traveling direction with respect to the yarn traveling direction, and the second airflow passage 11 is more in the yarn traveling direction than the third airflow passage 12.
  • the fourth airflow passage 13 includes a part of the outlet 15 through which the yarn flows out, and is perpendicular to the yarn traveling direction as compared with the third airflow passage 12.
  • the channel cross-sectional area of is large.
  • the gas introduced into the buffer unit 6 of the airflow supply means is then injected into the airflow passage 9 from the airflow injection port 7 through the gas supply pipe. Then, it passes through the second airflow passage 11, the third airflow passage 12, and the fourth airflow passage 13 and is discharged from the outlet 15 to the outside. According to the flow of the airflow, the yarn that flows in along with the airflow from the inlet 14 passes through the inside of the airflow passage 9 and is discharged from the outlet 15.
  • the stretching device 3 is generally called an ejector, and pulls and stretches the yarn by supplying a high-pressure compressed gas directly to the airflow passage 9.
  • a compressor is separately required, and accordingly, equipment costs are required, and utility costs are increased, leading to an increase in manufacturing costs. Therefore, in order to reduce the amount of compressed gas used, it is important to most effectively express the yarn pulling force in the drawing device 3, but the drawing force applied to the yarn by the drawing device is F, a constant.
  • the amount of gas flowing in from 14 is reduced. As a result, it has been found that there is a limit to narrowing the gap of the airflow passage 9 (that is, reducing the cross-sectional area of the flow path). Next, increasing the amount of gas supplied from the airflow injection port 7 is also considered to be an effective means for increasing the wind speed w of the gas, but naturally the amount of compressed air used is increased. This leads to an increase in manufacturing cost.
  • the present inventors have focused on the length and gap of the airflow passage 9.
  • the present inventors have found that by optimizing these, the amount of gas flowing in from the inlet 14 can be increased, and as a result, the traction force F of the yarn in the drawing device 3 can be increased.
  • the important point is the configuration of the second airflow passage 11, the third airflow passage 12, and the fourth airflow passage 13 from the downstream end 8 of the airflow injection port to the outlet 15.
  • the third airflow passage 12 has a constant cross-sectional area with respect to the yarn traveling direction.
  • the second airflow passage 11 has a flow passage cross-sectional area smaller than that of the third airflow passage 12, and the flow passage cross-sectional area is constant and / or gradually increased with respect to the yarn traveling direction.
  • the fourth air flow passage 13 has a flow passage cross-sectional area larger than that of the third air flow passage 12, and the flow passage cross-sectional area is constant and / or gradually increased with respect to the yarn traveling direction.
  • the length of the third airflow passage 12 in the yarn traveling direction can be increased while maintaining the state where the static pressure in the airflow passage 9 is lowered. It becomes possible to maintain the high wind speed level of the airflow in the third airflow passage 12 for a long time. As a result, the yarn pulling force F can be effectively expressed.
  • the airflow passage 9 has a higher pressure than the outside, and gas may flow out from the inlet 14. As a result, the wind speed w of the gas in the third airflow passage 12 decreases, and the yarn pulling force cannot be obtained.
  • (L 3 + L 4 ) / (L 2 + L 3 + L 4 ) sufficiently secures a section in which the traction force with respect to the yarn is large (that is, the second airflow passage 11 having a high wind speed) and sufficiently exerts the traction force on the yarn. Therefore, it is preferably 0.99 or less.
  • L 4 / (L 2 + L 3 + L 4 ) is sufficient to sufficiently secure the section of the fourth airflow passage 13 and stabilize the flow in the fourth airflow passage 13 to sufficiently exhibit the diffuser effect. Moreover, it is preferable that it is 0.01 or more.
  • the second air flow passage 11 and the fourth air flow passage 13 each have a constant flow path cross-sectional area toward the downstream side in the yarn running direction in FIG. 2, but as shown in FIG. You may increase gradually as it goes to the downstream of a direction. In this case, the diffuser effect is easily exhibited in the second air flow passage 11 and the fourth air flow passage 13, and the static pressure in the air flow passage 9 is further reduced, so that the inflow amount of gas flowing in from the inflow port 14 is increased.
  • the taper is gradually increased.
  • the present invention is not limited to this, and the taper may be gradually increased.
  • FIG. 3 although it may increase gradually over the full length of the 2nd airflow path 11 and the 4th airflow path 13, only one part may increase gradually in a taper shape as shown in FIG.
  • the flow passage sectional area on the downstream side in the yarn traveling direction may be expanded at a stretch as shown in FIG. 2, or the second airflow passage may be configured as shown in FIGS. 11 and the fourth airflow passage 13 may be configured such that at least the vicinity of the communicating portion with the third airflow passage 12 is tapered so that the cross-sectional area of the flow path gradually increases. Moreover, the structure in which these were combined may be sufficient.
  • Forming the outer wall member 5 so that the cross-sectional area of the flow path is expanded at a stretch only at the communication portion has an advantage that it is easy to process in manufacturing the outer wall member 5, and is tapered in the vicinity of the communication portion.
  • the turbulent vortex is less likely to be generated when the gas passes, and the yarn disturbance can be suppressed.
  • the length of the yarn running direction of the second air flow passage 11 L 2 and the yarn running direction of the length L 3 of the third airflow passageway 12 yarn running direction of the fourth air flow passage 13 it is preferable that the sum of the length L 4 of the (mm) satisfies the following relation. L 2 + L 3 + L 4 ⁇ 100 With this configuration, the above-described yarn pulling force can be effectively generated.
  • the configuration satisfies the above relational expression, and that the sum is 250 or more.
  • the total length of the second airflow passage 11, the third airflow passage 12, and the fourth airflow passage 13 is preferably 1500 mm or less, and more preferably 1000 mm or less.
  • the minimum flow path cross-sectional area H 2MIN of the second air flow passage 11, the flow path cross-sectional area H 3 of the third airflow passageway 12 and the maximum flow path cross-sectional area H 4MAX fourth airflow passage 13 It is preferable that the following relational expression is satisfied. 1.05 ⁇ H 3 / H 2MIN 1.05 ⁇ H 4MAX / H 3 With this configuration, the above-described yarn pulling force can be generated more effectively.
  • the ratio of the cross-sectional area of each flow path is less than 1.05, the flow path is not sufficiently enlarged toward the downstream side in the yarn traveling direction when viewed as the entire airflow passage.
  • the ratio of the respective channel cross-sectional areas is preferably 3 or less.
  • one passage forming surface of the pair of outer wall members 5 forming the air flow passage is in the running yarn direction between the second air flow passage 11 and the fourth air flow passage 13 as shown in FIG. It is preferable that it is formed in one continuous plane parallel to the running yarn direction so that the distance from the yarn is constant. With this configuration, a portion where the flow path does not expand is continuously formed on one side of the yarn in the second air flow passage 11 to the fourth air flow passage 13, and as a result, in the vicinity of the portion. An air flow with less turbulence is continuously formed, and it becomes possible to express traction force to the yarn more efficiently.
  • various materials such as metals, alloys, ceramics, and resins can be employed as the material of the outer wall member 5.
  • metals are preferable from the viewpoints of strength and wear resistance.
  • the cross-sectional shape of the airflow passage 9 in the direction perpendicular to the yarn running direction various shapes such as a round shape and a rectangular shape can be adopted.
  • a rectangular shape is preferable from the viewpoint that the amount of compressed air used is relatively small and the yarns are not easily fused or scratched.
  • the length of the first airflow passage 10 in the yarn traveling direction is shortened, the pressure loss in the flow path is reduced, and the amount of gas flowing in from the inlet 14 is increased. Therefore, the length is 100 mm. It is preferable to make it below, and it is more preferable to make it below 50 mm.
  • the cross-sectional area of the first airflow passage 10 in the direction perpendicular to the yarn traveling direction can be set within a range in which the yarn can flow. Since the pressure loss in the first airflow passage 10 decreases and the amount of gas flowing in from the inlet 14 increases, the minimum cross-sectional area in the direction perpendicular to the yarn traveling direction of the second airflow passage 11 is reduced. On the other hand, it is preferably wide, and more preferably wider than the maximum cross-sectional area in the direction perpendicular to the yarn running direction of the fourth airflow passage 13.
  • the gas supply pipe connecting the buffer 6 and the airflow injection port 7 preferably has an angle of 30 ° or less with respect to the airflow passage 9 from the viewpoint of suppressing a decrease in wind speed in the airflow passage 9. More preferably, a decrease in wind speed can be suppressed by setting the angle to 15 ° or less.
  • the shape of the gas supply pipe the cross-sectional shape in a direction perpendicular to the air flow direction in the gas supply pipe is preferably rectangular. Such a cross-section may be enlarged as the cross-sectional area is constant with respect to the airflow direction in the gas supply pipe or toward the airflow injection port 7, but the effect of the Laval nozzle that increases the wind speed due to adiabatic expansion in the sonic region is obtained. It is more preferable to enlarge toward the airflow injection port 7 so as to be obtained.
  • Air is the most economical and preferable airflow supplied to the yarn from the airflow injection port 7, but may be mixed gas, steam, saturated steam, or heated steam.
  • air stream having a high density because the density ⁇ of the air stream is also related as in the above formula (A).
  • the temperature of the air flow is most economically preferable at normal temperature, but is not limited thereto.
  • the humidity of the airflow is not controlled because the air is taken in. However, this is not the case. For example, by using a high-humidity airflow, the traction force of the yarn is improved. It becomes possible to make it.
  • the present invention is an extremely versatile invention and can be applied to the production of all known fiber webs. Therefore, it is not particularly limited by the polymer constituting the fiber web.
  • examples of polymers constituting the fiber web include polyester, polyamide, polyphenylene sulfide, polyolefin, polyethylene, polypropylene, and the like.
  • matting agents such as titanium dioxide, silicon oxide, kaolin, anti-coloring agents, stabilizers, antioxidants, deodorants, flame retardants, yarn friction, as long as the spinning stability is not impaired.
  • Various functional particles such as a reducing agent, a color pigment, and a surface modifier, additives such as organic compounds may be contained, and copolymerization may be included.
  • the polymer constituting the fiber web may be composed of a single component or a plurality of components.
  • examples of the configuration include a core sheath and side-by-side.
  • the cross-sectional shape of the fibers forming the fiber web may be irregular, such as round, triangular, flat, or hollow.
  • the single yarn fineness of the fiber web is not particularly limited.
  • the number of single yarns of the fiber web is not particularly limited, but the difference from the conventional technology becomes clearer as the number of single yarns of the fiber web increases.
  • a polyolefin resin is melt-spun from a spinneret 1.
  • the spinning temperature at this time is preferably 200 to 270 ° C., more preferably 210 to 260 ° C., and further preferably 220 to 250 ° C.
  • the yarn 2 melt-spun from the spinneret 1 is then cooled by the cooling device 19.
  • a cooling device 19 forcibly blows cold air onto the yarn.
  • a method of natural cooling at the ambient temperature around the yarn a method of natural cooling by adjusting the distance between the spinneret 1 and the drawing device 3, and the like. A method combining these methods can also be employed.
  • the cooling conditions can be appropriately adjusted and adopted in consideration of the discharge amount per single hole of the spinneret, the spinning temperature, the atmospheric temperature, and the like.
  • the yarn cooled by the cooling device 19 is then stretched by being applied with tension by the stretching device 3 as described above, and blown onto the net of the conveyor 4 to form a fiber web on the conveyor 4.
  • the spinning speed when using the stretching apparatus 3 of the present invention is preferably 3,500 to 6,500 m / min, more preferably 4,000 to 6,500 m / min, and still more preferably 4,500 to 6,500 m / min. 500 to 6,500 m / min.
  • the spinning speed is preferably 3,500 to 6,500 m / min, more preferably 4,000 to 6,500 m / min, and still more preferably 4,500 to 6,500 m / min. 500 to 6,500 m / min.
  • the stretching apparatus according to the present invention can be used not only for the production of fiber webs but also for the production of fibers used in applications such as clothing and industry.
  • the fiber obtained by spinning, cooling, and stretching may be wound around a bobbin or the like in the same manner as the above-described nonwoven fabric production.
  • FIG. 6 shows a schematic diagram of the traction force measurement method.
  • a single nylon No. 3 nylon teg (A-154 made by Yutaka Make) 17 is fixed to a tension meter 16 (MODEL-RX-1 made by Aiko Engineering Co., Ltd.), and an air flow passage 9 is formed from the upper part of the drawing device 3.
  • the guts 17 are hung inside, and the guts 17 are cut at the lowest point (outlet 15) of the airflow passage.
  • compressed air was supplied to the stretching device 3, and the tension (N) generated at that time was measured with a tension meter 16. This measurement was repeated 5 times, and the average value (N) was taken as the traction force.
  • Spinning speed (10000 ⁇ single hole discharge amount) / single fiber fineness.
  • Example 1 A fiber web was manufactured as follows using the apparatus having the configuration shown in FIGS. Incidentally, the stretching device 3, the cross section of the air flow passage 9 is rectangular, the length L from the inlet 14 of the air flow passage 9 to the outlet port 15 200 mm, 50 mm and length L 2 of the second air flow passage 11, the 3 50 mm length L 3 of the air flow passage 12, the length L 4 of the fourth air flow passage 13 was set to 50 mm. Also, the gap W 1 of the first air flow passage 3 mm, and the gap W 2 of the second air flow passage 3 mm, 4 mm gap W 3 of the third airflow passageway, a gap W 4 of the fourth air flow passage 13 and 5 mm.
  • the installation angle of the airflow supply pipe with respect to the airflow passage 9 was 15 °, and the width of the airflow supply pipe was 0.2 mm.
  • 0.2 MPa compressed air was supplied to the air flow supply unit to the stretching device 3.
  • the static pressure in the airflow passage 9 at the downstream end 8 of the airflow injection port was ⁇ 6.3 kPa.
  • a polypropylene resin having a melt flow rate (MFR) of 35 g / 10 min was melted by an extruder and spun from a rectangular spinneret 1 with a spinning temperature of 235 ° C. and a hole diameter of 0.30 mm at a single hole discharge rate of 0.56 g / min.
  • MFR melt flow rate
  • a fiber web made of fibers was obtained.
  • the properties of the obtained polypropylene long fiber were a single fiber diameter of 16.6 ⁇ m, and a spinning speed calculated from this was 2,951 m / min.
  • Example 2 As a pattern in which the total length of the second airflow passage 11, the third airflow passage 12, and the fourth airflow passage 13 is long, the length L from the inlet 14 to the outlet 15 of the airflow passage 9 is 350 mm, and the second airflow passage 11 100mm length L 2 of the length L 3 of 100mm of the third airflow passageway 12, except that the length L 4 of the fourth air flow path 13 and 100mm were the same as in example 1.
  • the characteristics of the obtained polypropylene long fiber were a monofilament fiber diameter of 16.1 ⁇ m, and a spinning speed calculated from this was 3,043 m / min.
  • Example 3 As a pattern in which the total length of the second airflow passage 11, the third airflow passage 12 and the fourth airflow passage 13 is short, the length L from the inlet 14 to the outlet 15 of the airflow passage 9 is 140 mm, and the second airflow passage 11. length L 2 to 30mm, length L 3 of the 30mm of the third airflow passageway 12, except that the length L 4 of the fourth air flow path 13 and 30mm were the same as in example 1.
  • the properties of the obtained polypropylene long fiber were as follows: the single fiber diameter was 17.4 ⁇ m, and the spinning speed calculated from this was 2816 m / min.
  • Example 4 One passage forming surface of the pair of outer wall members 5 forming the air flow passage 9 is formed by a continuous single plane parallel to the traveling yarn direction between the second air flow passage 11 and the fourth air flow passage 13. The same pattern as that of Example 1 was used except that a stretching apparatus 3 as shown in FIG.
  • the properties of the obtained polypropylene long fiber were a single fiber diameter of 16.3 ⁇ m, and a spinning speed calculated from this was 3,005 m / min.
  • the properties of the obtained polypropylene long fiber were a single fiber diameter of 17.6 ⁇ m, and a spinning speed calculated from this was 2,783 m / min.
  • Example 2 Not larger fourth airflow channel 13 (i.e., not provided substantially fourth airflow passage) as a pattern, a gap W 4 of the fourth air flow path 13 and 4 mm, the third air flow passage and the fourth air flow path in FIG. 2 Example 1 was the same as Example 1 except that the cross-sectional shape and the cross-sectional area were the same.
  • the properties of the obtained polypropylene long fiber were as follows: the single fiber fiber diameter was 18.6 ⁇ m, and the spinning speed calculated from this was 2,634 m / min.
  • the traction force As a result of measuring the traction force, it was 32 mN as shown in Table 1.
  • the static pressure in the airflow passage 9 at the downstream end 8 on the airflow injection port was ⁇ 5.5 kPa.
  • the single fiber fiber diameter was 18.1 ⁇ m, and the spinning speed calculated from this was 2,707 m / min.
  • the properties of the obtained polypropylene long fiber were as follows: the single fiber fiber diameter was 18.4 ⁇ m, and the spinning speed calculated from this was 2,663 m / min.
  • the stretching device of the present invention can be applied not only to stretching yarns for nonwoven fabrics but also to stretching yarns for other uses such as various woven and knitted fabrics.

Abstract

Afin de fournir un dispositif d'étirement qui permet d'appliquer efficacement une force de traction à des fils, ce qui permet ainsi de fabriquer de manière stable des fils fins tout en économisant de l'énergie, la présente invention concerne un dispositif d'étirage qui étire un fil obtenu en soumettant un polymère thermoplastique à un filage par fusion et en soufflant de l'air sur le fil vers l'intérieur depuis l'extérieur d'un trajet de transfert du fil dans un canal ayant une entrée et une sortie pour le fil, le dispositif d'étirage étant caractérisé en ce que le canal ayant l'entrée et la sortie pour le fil est doté d'un premier canal de flux d'air, d'un trou d'éjection de flux d'air, d'un deuxième canal de flux d'air, d'un troisième canal de flux d'air et d'un quatrième canal de flux d'air, de manière continue dans cet ordre le long de la direction de transfert de fil, et en ce que les étapes suivantes (i) à (iv) sont satisfaites. (i) Le troisième canal de flux d'air a une zone transversale de canal de flux fixe le long de la direction de transfert de fil. (ii) Le deuxième canal de flux d'air a une zone transversale de canal de flux plus petite que le troisième canal de flux d'air, et la zone transversale de canal de flux de celui-ci est fixe et/ou augmente progressivement le long de la direction de transfert de fil. (iii) Le quatrième canal de flux d'air a une zone transversale de canal de flux plus grande que celle du troisième canal de flux d'air, et la zone transversale de canal de flux de celui-ci est constante et/ou augmente progressivement le long de la direction de transfert de fil. (iv) La longueur L2 du deuxième canal de flux d'air dans la direction de transfert de fil, la longueur L3 du troisième canal de flux d'air dans la direction de transfert de fil et la longueur L4 du quatrième canal de flux d'air dans la direction de transfert de fil satisfont les relations suivantes : (L3 + L4) / (L2 + L3 + L4) ≥ 0,6 et L4 / (L2 + L3 + L4) ≤ 0,4.
PCT/JP2019/007201 2018-03-29 2019-02-26 Dispositif d'étirement ainsi que dispositif de fabrication et procédé de fabrication de fibre et de bande de fibres WO2019187887A1 (fr)

Priority Applications (3)

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JP2019514048A JP6965922B2 (ja) 2018-03-29 2019-02-26 延伸装置、ならびに、繊維および繊維ウェブの製造装置および製造方法
CN201980019338.2A CN111868312B (zh) 2018-03-29 2019-02-26 拉伸装置、以及纤维及纤维网的制造装置及制造方法
KR1020207026557A KR102391138B1 (ko) 2018-03-29 2019-02-26 연신 장치, 그리고 섬유 및 섬유 웹의 제조 장치 및 제조 방법

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JP2018-064188 2018-03-29
JP2018064188 2018-03-29

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KR (1) KR102391138B1 (fr)
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933712B1 (fr) * 1970-12-26 1974-09-09
JPS60394U (ja) * 1983-06-15 1985-01-05 旭化成株式会社 糸条引取ノズル装置
JPH05321014A (ja) * 1992-05-08 1993-12-07 Toray Ind Inc 紡糸装置および紡糸方法
JP2001303420A (ja) * 2000-04-26 2001-10-31 Mitsui Chemicals Inc 高均一性不織布の製造方法およびその装置
JP2002371428A (ja) * 2001-06-08 2002-12-26 Kobe Steel Ltd 糸条延伸装置
JP2003520303A (ja) * 2000-01-20 2003-07-02 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー ２成分繊維の高速紡糸方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1760483A1 (de) * 1968-05-25 1971-04-08 Lutravil Spinnvlies Fasern
JPH05230710A (ja) * 1992-02-14 1993-09-07 Mitsubishi Rayon Co Ltd 熱可塑性重合体繊維の製造方法
US5397413A (en) * 1992-04-10 1995-03-14 Fiberweb North America, Inc. Apparatus and method for producing a web of thermoplastic filaments
DE4414277C1 (de) * 1994-04-23 1995-08-31 Reifenhaeuser Masch Nach dem Ruhedruckprinzip arbeitende Spinnvliesanlage für die Herstellung einer Nonwoven-Spinnvliesbahn
FR2792655B1 (fr) * 1999-04-23 2001-06-01 Icbt Perfojet Sa Installation pour la fabrication d'une nappe textile non tissee et procede de mise en oeuvre d'une telle installation
JP3623402B2 (ja) * 1999-07-15 2005-02-23 ユニ・チャーム株式会社 冷却延伸装置
US6499981B1 (en) * 1999-07-26 2002-12-31 Kabushiki Kaisha Kobe Seiko Sho Drawing unit
DE50211394D1 (de) * 2002-02-28 2008-01-31 Reifenhaeuser Gmbh & Co Kg Anlage zur kontinuierlichen Herstellung einer Spinnvliesbahn
KR20050016507A (ko) * 2002-06-03 2005-02-21 도레이 가부시끼가이샤 사조 제조 방법 및 장치
EP1510603A4 (fr) * 2002-06-03 2006-12-13 Toray Industries Dispositif et procede de fabrication de fil
DE602006012527D1 (de) * 2006-12-15 2010-04-08 Fare Spa Vorrichtung und Prozess zur Herstellung einer Spinnvliesmatte
US8246898B2 (en) * 2007-03-19 2012-08-21 Conrad John H Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit
BR112012011531B1 (pt) * 2009-12-09 2019-08-20 Toray Industries, Inc Método para produzir um tecido não tecido de fibra longa por fiação

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933712B1 (fr) * 1970-12-26 1974-09-09
JPS60394U (ja) * 1983-06-15 1985-01-05 旭化成株式会社 糸条引取ノズル装置
JPH05321014A (ja) * 1992-05-08 1993-12-07 Toray Ind Inc 紡糸装置および紡糸方法
JP2003520303A (ja) * 2000-01-20 2003-07-02 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー ２成分繊維の高速紡糸方法
JP2001303420A (ja) * 2000-04-26 2001-10-31 Mitsui Chemicals Inc 高均一性不織布の製造方法およびその装置
JP2002371428A (ja) * 2001-06-08 2002-12-26 Kobe Steel Ltd 糸条延伸装置

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CN111868312B (zh) 2022-05-31
JPWO2019187887A1 (ja) 2021-02-12
KR20200138204A (ko) 2020-12-09
CN111868312A (zh) 2020-10-30
KR102391138B1 (ko) 2022-04-28

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