JP2010077553A - Apparatus and method for producing filament yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing a filament yarn by which a multifilament yarn having excellent symmetric properties in the thicknesses and physical properties of the yarn, and qualities such as strength and elongation can be produced stably, and to provide a method for producing the filament yarn. <P>SOLUTION: A plurality of arrays of extruding holes bored in a spinning cap 1 is separated to at least two groups by unbored parts, and non-traveling zones of the filament yarns are formed along the traveling passages of the filament yarns so as to correspond to the unbored parts. A ring-shaped inward-blowing cooling means 8 having a ring-shaped air flow-blowing face for cooling the filament yarns spun from the spinning cap by blowing the air flow inward from the outer periphery side is arranged, and an air flow-regulating means 5 extended along the traveling passages of the filament yarns and having air permeability is arranged at least at the non-traveling region of a connecting part for connecting the inside non-traveling region and the outside non-traveling region of the traveling passages of the filament yarns separated to the two or more groups, and a part of the vicinities of the outside and the inside of the non-traveling region of the connecting part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filament yarn manufacturing apparatus and method.

  Multifilament yarns composed of thermoplastic polymers such as polyester and polyamide are generally melt-spun, that is, the molten thermoplastic polymer supplied to the spin pack is spun as multifilament yarns from the spinneret installed in the spin pack. Then, after cooling and solidifying by a cooling means for blowing an air flow, an oil agent is applied, etc., and it is stretched and wound up as necessary in the same step or another step.

  Filament yarns composed of thermoplastic polymers as described above are used in a very wide range of fields such as clothing and industrial fields. For example, in the field of clothing, the purpose is to provide a soft texture. Attempts have been made to increase the fineness of single yarn and to increase the number of filaments. Further, in recent years, in order to realize high production efficiency and low production cost, attempts have been made to form a plurality of filament yarns from a single spinneret.

  However, it is known that the following problems occur in the melt spinning process when the fineness of single yarn is reduced and the number of filaments is increased, which hinders the improvement of quality and productivity, as well as the expansion of sales and applications. ing. The main problem is that when the number of filaments is increased, it becomes difficult to uniformly perform cooling performed by melt spinning on each single yarn of the multifilament yarn, which causes cooling spots and yarn fluctuations. The problem that a thickness spot etc. will deteriorate extremely is mentioned.

  In order to solve these problems, various methods have been proposed which have attempted to improve the cooling means and the like.

  In general, as a cooling means in melt spinning, a means for cooling a multifilament yarn spun from a circular spinneret by blowing an air flow from one direction is known. This cooling means is hereinafter referred to as a uniflow cooling means. This Uniflo cooling means has a very simple structure, and is the cooling means most applicable to cooling of melt spinning. However, among the multifilament yarns, the single yarn on the side close to the air flow blowing surface is sufficiently cooled, but the far side single yarn is not sufficiently cooled. Moreover, since the surface opposite to the air flow blowing surface is open, it is easy to be subjected to disturbance of the field atmosphere. For this reason, particularly when the number of filaments is increased, cooling spots, thread wobbles, and the like occur, and the thread thickness spots and the like are extremely deteriorated.

  On the other hand, in order to perform uniform cooling, the discharge holes for spinning the single yarns of the multifilament yarn are arranged circumferentially around the spinneret centered on the spinneret center, and a cylindrical airflow blowing part There is known a means for cooling the multifilament yarn by blowing an air flow from the inner peripheral side or the outer peripheral side. The means for cooling the multifilament yarn by blowing an air flow from the inner peripheral side will be referred to as an outer blown annular cooling means, and the means for cooling by blowing an air flow from the outer peripheral side will be called an inner blown annular cooling means. According to these means, the multifilament yarns are arranged in a circular shape, and can be cooled over the entire circumference by the air flow from the inner peripheral side or the outer peripheral side. It is considered a high-potential means that can be expected to be suppressed. However, since the outer blown annular cooling means cools by blowing an air flow from the inner peripheral side of the multifilament yarn arranged in a circle, the air flow diffuses radially toward the outer peripheral side of the multifilament yarn and decelerates. Therefore, there is a problem that the cooling capacity is low and the versatility such as compatibility with various types is lacking. In addition, as described above, the air flow diffuses radially toward the outer peripheral side and is decelerated, and as a result of being an open system, there is a problem that it is susceptible to disturbance of the on-site atmosphere as in the case of the Uniflow cooling means. On the other hand, according to the knowledge of the present inventors, the inner blown annular cooling means blows and cools the airflow from the outer peripheral side of the circumferentially arranged multifilament yarn. Since it is merged and accelerated toward the inner circumference of the yarn, it has a high cooling capacity and versatility such as multi-product compatibility, and an air flow blowout part is arranged on the outer circumference side of the multifilament yarn. Hard to be disturbed. Therefore, the inner blown annular cooling means is considered to be a cooling means with high potential that is excellent in uniform cooling, cooling capacity, versatility and the like.

  In addition, it is known that various problems occur with respect to the formation of multiple yarns, and the arrangement of the discharge holes for spinning each single yarn of the filament yarn drilled in the spinneret is divided into at least two groups. Since the filament yarn has a non-running area along the running path direction of the filament yarn corresponding to the discharge hole non-perforated portion provided for this purpose, the filament yarn has a non-running area in the non-running area of the filament yarn. The wind speed of the airflow that passes through the non-running area of the connecting portion that connects the inner non-running area and the outer non-running area of the travel path of the divided filament yarn is greater than the wind speed of the airflow that passes through the filament yarn running area. The wind speed spot in the circumferential direction becomes larger. Further, since the single yarn near the non-running region of the connecting portion is rapidly cooled, the cooling spots between the single yarns become large. As a result, cooling spots, thread wobbles, etc. occur, and the thread thickness spots etc. are extremely deteriorated. Further, the air temperature of the airflow passing through the connecting portion non-running region is lower than the air temperature of the airflow passing through the filament yarn running region and receiving heat from the filament yarn, and in the non-running region of the filament yarn. Since the accompanying airflow in the direction of the filament yarn travel path is small, the airflow that has passed through this non-running region of the connecting portion is likely to become an upward airflow immediately below the spinneret as a shortcut, and the lower temperature of the spinneret lowers. There has been a problem that it is easy to cause temperature spots, degradation of yarn-making stability, and increase in cooling spots between single yarns.

  This will be described with reference to the drawings. FIG. 3 (a) is an example of a configuration of a melt spinning used in the related art, and is a schematic diagram of a cross section perpendicular to the traveling path direction of the filament yarn and an example of an undesired flow form. FIG. 3B is a conceptual diagram of the DD cross section of FIG. 3A schematically illustrating an example of the form of the flow formed around the spinneret related to the configuration of the melt spinning used in the past. FIG. 3C is a conceptual diagram of the EE cross section of FIG. 3A schematically illustrating an example of the form of the flow formed around the spinneret according to the conventionally used melt spinning structure.

  As shown in FIG. 3 (a), the wind speed of the airflow 19 passing through the connecting portion non-running area 17 is higher than the wind speed of the airflow 20 passing through the filament yarn running area 16, so that the wind speed spots in the circumferential direction are growing. Moreover, since the single yarn 18 in the vicinity of the connecting portion non-running region 17 is rapidly cooled, the cooling spots between the single yarns increase. Furthermore, since the air temperature of the airflow 19 passing through the connecting portion non-traveling region 17 is lower than the air temperature of the airflow 20 that passes through the traveling region 16 of the filament yarn and receives heat from the filament yarn, Cooling spots increase. By the way, the suction of air from the downstream side in the traveling path direction of the filament yarn 12 from the downstream side in the traveling path direction according to the amount of air taken out from the region immediately below the spinneret 1 to the downstream side in the traveling path direction of the filament yarn, that is, Ascending airflow is generated, and a flow as shown in FIG. 3B is formed in the vicinity of the spinneret 1. However, for example, in the EE cross section of FIG. 3A passing through the connecting portion non-running region 17, the magnitude of the accompanying airflow in the running path direction of the filament yarn is small, so that it passes through the connecting portion non-running region 17. Since the air flow 19 that is generated tends to be the upward air flow as described above, a flow as shown in FIG. 3C is formed in the vicinity of the spinneret 1, for example. As a result, there has been a problem that the lower surface temperature of the spinneret 1, temperature unevenness, degradation of yarn-making stability, and increase in cooling unevenness between individual yarns are likely to occur.

  Hereinafter, the air flow generated by the suction of air from the downstream side to the upstream side in the traveling path direction of the filament yarn is referred to as an updraft.

  Therefore, according to the knowledge of the present inventors, techniques such as Patent Documents 1 and 2 have been proposed in order to solve these problems. In Patent Document 1, in melt spinning using an externally blown annular cooling means, a cooling wind blocking means for blocking the entry of cooling air to the upstream side is provided, and the melt spinning is performed in which the spinneret surface is cooled and temperature spots are prevented from being generated. A device has been proposed. Further, FIG. 1 in the specification of Patent Document 1 shows a plate-shaped cooling air blocking means according to the knowledge of the present inventors. That is, according to the knowledge of the present inventors, a plate-shaped cooling air blocking means extending in a direction perpendicular to the filament yarn traveling path direction is disposed in the filament yarn non-traveling region upstream of the cooling device. Is the method. However, according to the knowledge of the present inventors, in this method, since most of the passage of the upward airflow directly below the spinneret is blocked and the airflow passage cannot be secured, the region that interferes with the traveling region of the filament yarn In addition, there is a problem in that a stable airflow cannot be formed, such as an updraft, and cooling spots and yarn fluctuations occur between single yarns, resulting in extremely worsening of the yarn thickness unevenness. . Furthermore, problems such as the above-described problem of lack of versatility such as low cooling capacity and compatibility with various types of products and the tendency to be subject to disturbances in the field atmosphere have not been solved. Further, according to the knowledge of the present inventors, if this plate-like cooling air blocking means is applied to the inner blown annular cooling means, it rises directly below the spinneret in a form of a shortcut from the outer peripheral side of the filament yarn traveling region. Since a stable air current cannot be formed, such as when an air current is generated, there are problems such as cooling spots and thread swaying, and deterioration of physical properties such as deterioration of thread thickness spots and strength / elongation. is there.

In Patent Document 2, in melt spinning using an outer blown annular cooling means, a cooling partition member is provided for partitioning each yarn group of filament yarn spun from the spinneret along the traveling direction of the spun filament yarn, There has been proposed a melt spinning apparatus that can suppress unevenness in yarn quality by uniformly distributing cooling air to each single yarn while suppressing yarn fluctuation. Further, FIG. 1 of Patent Document 2 shows a plate-like cooling partition member according to the knowledge of the present inventors. That is, according to the knowledge of the present inventors, it is a method of partitioning each traveling region of each yarn group by disposing a plate-like cooling partition member along the traveling path direction of the filament yarn. However, according to the knowledge of the present inventors, this method does not solve the problems such as the above-described outer blowing annular means that the cooling capacity is low and the versatility such as compatibility with various types is lacking. Furthermore, in Patent Document 2, by providing a heat insulating partition member at the upper part of the airflow blowing cylinder, the cooling air enters the region directly below the spinneret, prevents the ambient temperature from being lowered, and can melt temperature spots on the spinneret surface. A spinning device has been proposed. Further, in FIG. 1 in the specification of Patent Document 2, according to the knowledge of the present inventors, a plate-like heat insulating partition member is illustrated in the upper part of the airflow blowing cylinder. However, according to the knowledge of the present inventors, the method of providing the heat insulating partition member of Patent Document 2 is a proposal similar to that of Patent Document 1 described above, and thus the above-described problems similarly occur.
JP 2004-84134 A JP 2006-241611 A

  The object of the present invention is to solve the above-mentioned problems, suppress temperature fluctuations on the spinneret surface, and suppress yarn fluctuations of the spinning filament yarn, thereby achieving uniformity in the thickness unevenness and physical property unevenness of the yarn. Filaments that can produce multifilament yarns composed of thermoplastic polymers, which are single yarn fineness and multifilaments with excellent quality such as strength, elongation, etc., with good stability and versatility It is providing the manufacturing apparatus and manufacturing method of a thread | yarn.

In order to achieve the above object, the present invention provides an apparatus for producing a filament yarn by melt spinning a thermoplastic polymer, which satisfies the following requirements (1) to (3): A yarn manufacturing apparatus is provided.
(1) The filament yarn travel path corresponds to a non-perforated portion in which the discharge holes are not perforated in the arrangement of the plurality of ejection holes for spinning each filament yarn perforated in the spinneret. It is divided into at least two groups by the non-piercing portion so as to have a non-running region of the filament yarn along the direction.
(2) Disposing an internal blow cooling means having an air flow blowing surface for cooling the filament yarn spun from the spinneret by blowing an air flow inward from the outer peripheral side of the filament yarn traveling path.
(3) a non-running region of the filament yarn, and a connecting portion non-running region that connects an inner non-running region and an outer non-running region of the traveling path of the filament yarn divided into two or more groups; An air flow rectifying means having air permeability extending along the traveling path direction of the filament yarn is disposed in at least a part of the vicinity of the outer side and the inner side of the connecting portion non-traveling region.

  Moreover, according to the preferable form of this invention, the manufacturing apparatus of the filament yarn characterized by arrange | positioning the airflow heating means to the said airflow rectification means is provided.

  According to another aspect of the present invention, there is provided a method for producing a filament yarn by melt spinning a thermoplastic polymer, wherein a plurality of discharge holes for spinning each single yarn of the formed filament yarn are provided. The array is divided into at least two groups by the non-perforated portion so as to have a non-traveling region of the filament yarn along the traveling direction of the filament yarn corresponding to the non-perforated portion where the discharge hole is not perforated. An inner blower having an airflow blowing surface that spins the filament yarn from the spinneret and cools the filament yarn spun from the spinnerette by blowing an airflow inward from the outer peripheral side of the filament yarn traveling path. The filament yarn is cooled using a cooling means and is in the non-running region of the filament yarn, and is divided into the two or more groups, the inner non-running region and the outer non-running region of the filament yarn traveling path A non-running region that connects the regions, and an air flow rectifier having air permeability that extends along the running path direction of the filament yarn at least in the vicinity of the outside and near the inside of the non-running region of the connecting portion. The present invention provides a method for producing a filament yarn, characterized by rectifying an air flow blown to the filament yarn by means.

  In the present invention, the “non-perforated portion” means that each single yarn, which is provided to divide the array of a plurality of discharge holes for spinning each single yarn of the filament yarn into at least two groups on the spinneret surface, is spun. This refers to a region where no discharge hole is formed.

  In the present invention, the “filament yarn traveling path” refers to the combined traveling path of each filament yarn, and the outermost peripheral surface of the filament yarn traveling path and the innermost filament thread traveling path. An area surrounded by the circumference. Here, a region surrounded by the outermost peripheral surface of the filament yarn traveling path and the innermost peripheral surface of the filament yarn traveling path may be referred to as a “filament yarn traveling region”. The “outermost peripheral surface of the filament yarn travel path” refers to a surface that passes through the travel path of the filament yarn that travels on the outermost periphery as viewed from the travel path of the filament yarn and surrounds the travel path of the filament yarn from the outer periphery side. Say. The “innermost circumferential surface of the filament yarn traveling path” refers to the filament yarn traveling path on the inner circumferential side through the traveling path of a single filament yarn traveling on the innermost circumference as viewed from the filament yarn traveling path. The surface that surrounds.

  In the present invention, “non-running region of filament yarn” refers to a combination of regions in which filament yarns do not run. The filament yarn travel path is divided into an inner non-running area and an outer non-running area, and a connecting part non-running area connecting them.

  Further, in the present invention, the “inner non-running region of the filament yarn traveling path” refers to a non-running region on the opposite side of the airflow blowing surface as viewed from the filament yarn traveling path.

  In the present invention, the “outer non-running region of the filament yarn traveling path” refers to a non-running region on the airflow blowing surface side as viewed from the filament yarn traveling path.

  In the present invention, the “filament yarn travel path direction” refers to the direction in which the filament yarn spun from the spinneret travels. The traveling path direction of the filament yarn may be perpendicular to the spinneret surface, or may be slightly inclined due to the provision of means for applying the thread oil agent, converging, guiding, guiding, and the like.

  According to the present invention, as described below, the temperature uniformity on the spinneret surface is suppressed, and the yarn swing of the spun filament yarn is suppressed, so that the uniformity and strength of the yarn thickness unevenness, physical property unevenness, etc. -Manufacture of filament yarns that can produce multifilament yarns composed of thermoplastic polymers that are single filament fineness and multifilament with excellent quality such as elongation, with good yarn stability and versatility. An apparatus and a manufacturing method can be obtained.

  Hereinafter, an example of the best embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic view schematically illustrating an example of a preferred melt spinning configuration of the present embodiment.
FIG. 2 (a) is a schematic diagram of an AA arrow view of FIG. 1 and a preferred flow diagram schematically illustrating an example of a melt spinning configuration around a spinneret according to an example of the present embodiment. is there. FIG. 2B is a conceptual diagram of the BB cross section of FIG. 2A schematically illustrating an example of a flow form formed around the spinneret according to an example of the present embodiment. FIG. 2C is a conceptual diagram of the CC cross section of FIG. 2A schematically illustrating an example of a flow form formed around the spinneret according to an example of the present embodiment.

  FIG. 3 (a) is an example of a configuration of a melt spinning conventionally used, schematically showing a cross-sectional view in a direction perpendicular to the traveling path direction of the filament yarn and an example of an unfavorable flow form. FIG. 3B is a conceptual diagram of the DD cross section of FIG. 3A schematically illustrating an example of the form of the flow formed around the spinneret according to the conventional melt spinning structure. FIG. 3C is a conceptual diagram of the EE cross section of FIG. 3A schematically illustrating an example of the form of the flow formed around the spinneret according to the conventional melt spinning structure.

  1-3, 1 is a spinneret, 2 is a spin pack, 3 is a spin block, 4 is a heating device or a heating cylinder, 5 is an air flow rectifying means, 6 is an air flow blowing portion, and 7 is blown from an air flow blowing surface. 8 is an inner blowing annular cooling means, 9 is an air flow chamber, 10 is an annular air blowing surface (surface on the filament yarn side where the air flow of the air blowing portion 6 is blown out), 11 is an air flow supply port, and 12 is a filament. Yarn, 13 is means for applying, bundling, guiding, guiding, etc., 14 is thread take-up means, 15 is thread take-up means, 16 is a filament yarn traveling area, 17 is a connecting part non-running area, and 18 is a connecting part non-connecting area. Single yarn in the vicinity of the traveling region, 19 is an airflow passing through the non-traveling region of the connecting portion, 20 is an airflow passing through the traveling region of the filament yarn, 21 is an airflow passing through the airflow rectifying means, and 22 is an installation range of the airflow rectifying means It is. QTD is a cooling start distance.

  In FIG. 1, the filament yarn 12 spun from the spinneret 1 is cooled and solidified by the air flow 7 blown from the air flow blowing surface 10 through the air flow supply port 11, the air flow chamber 9, and the air flow blowing portion 6. Thereafter, the yarn is taken up as a package by the yarn winding means 15 through the means 13 for applying the thread oil agent, converging, guiding, guiding, etc., and the yarn take-up means 14. Further, the wound filament yarn 12 is then subjected to a treatment such as heat treatment or stretching in a separate step (not shown) as necessary.

  In addition, in FIGS. 1-3, although the extruder, pump, filter piping, etc. which supply the thermoplastic polymer which comprises a filament thread | yarn, the discharge hole drilled in a spinneret, etc. are not illustrated, of course, It may be provided. In addition, spinning pack heaters, heat insulation members, heat insulation members, etc. that heat and heat the spin pack, air flow generating means such as fans and blowers that supply air flow, air flow piping, air flow filters, air flow components and temperature, humidity, flow rate Although air flow adjusting means such as the flow rate, the flow direction, and the distribution thereof are not shown, they may be provided. In general, in melt spinning, heating provided for the purpose of slow cooling, etc., aiming to increase the strength of spinning yarn, spinning blocks, cooling means, filament yarn, etc. in order to prevent disturbance effects such as the on-site atmosphere. In many cases, sealing is performed around an apparatus, a heating cylinder, a heat insulating cylinder, and the like, but this is not shown in FIGS. 1 to 3, but may be performed.

  In addition, in FIG. 1 to FIG. 3, a heat insulating member, a heat retaining member, a heating member, a cooling member, a heating device, a cooling device, a temperature measuring device, a heating device, a heating tube, a heat retaining tube, etc. , Yarn heating means such as a heating roller and a heating tube, yarn humidifying means, yarn relaxing means, yarn path ducts, yarn drawing means such as drawing rollers, yarn suction means such as a suction gun, yarn sending means for sending filament yarns by airflow Inert gas such as noble gas, nitrogen or steam for the purpose of suppressing dirt on the lower surface of the spinneret due to yarn conveying means such as conveyors, moving means for moving cooling means, etc., or monomers generated from filament yarn, There may be one or more monomer suppressing means for supplying air, moisture containing air, etc. to the vicinity of the lower surface of the spinneret, and monomer sucking means for sucking and removing monomers etc. It may be provided a plurality of types. In the present embodiment, “solidification” refers to a state in which the filament yarn composed of a thermoplastic polymer and each single yarn thereof are below the glass transition temperature.

  Now, a first embodiment of the present invention will be described. As shown in FIG. 1 and FIG. 2 (a), for example, the first embodiment of the present invention includes a spinneret for spinning a molten thermoplastic polymer as a filament yarn, and an outer peripheral side of the filament yarn traveling path. An apparatus for producing filament yarn having at least an inner blown annular cooling means provided with an annular airflow blowing surface for blowing the airflow inwardly to cool the filament yarn, each filament yarn perforated in a spinneret The arrangement of the plurality of discharge holes for spinning the single yarn has a non-running region of the filament yarn along the running path direction of the filament yarn corresponding to the non-piercing portion where the discharge hole is not drilled. The filament yarn is divided into at least two groups by a non-piercing portion, and is in the non-running region of the filament yarn and is not on the inner side of the running path of the filament yarn divided into the two or more groups. A breathable portion extending along the travel path direction of the filament yarn at least in the vicinity of the outside and near the inside of the connecting portion non-running region connecting the region and the outer non-running region An apparatus for producing a filament yarn, characterized in that an air flow rectifying means having

  The features and effects of the first embodiment of the present invention will be described. The air flow rectifying means 5 having air permeability and extending along the traveling path direction of the filament yarn 12 is arranged in the connecting portion non-running region 17 and at least a part near the outside and the inside of the connecting portion non-running region. By setting, for example, as shown in FIG. 2 (a), by making the wind speed of the airflow 21 passing through the airflow rectifying means 5 equal to the wind speed of the airflow 20 passing through the traveling region 16 of the filament yarn 12, The air velocity introduced to the inner peripheral side of the traveling region 16 of the filament yarn 12 is made uniform in the circumferential direction, and passes through the traveling region of the filament yarn 12 as shown in FIGS. 2 (b) and 2 (c). Since the airflow and the airflow passing through the airflow rectifying means 5 have the same form in the traveling path direction of the filament yarn 12 and can form a stable airflow, the yarn yarn 12 can be prevented from wobbling. Done . Here, the arrangement range of the airflow rectifying means is, for example, an area indicated by 22 in FIG. Here, it is preferable that the pressure loss when the airflow passes through the airflow rectifying means 5 and the pressure loss when the airflow passes through the traveling region 16 of the filament yarn 12 are equal. Moreover, it can suppress that the single yarn 18 of the connection part non-running area | region 17 vicinity is cooled rapidly, and can suppress the cooling spot between each single yarn. Furthermore, since the wind speed of the airflow 21 passing through the airflow rectifying means 5 is smaller than the windspeed of the airflow 19 passing through the connecting portion non-running region 17 in the conventional melt spinning structure of FIG. The air temperature introduced to the inner peripheral side of the traveling region 16 of the yarn 12 becomes higher on average, and the lower surface temperature of the spinneret 1 due to the rising air flow generated on the inner peripheral side of the filament yarn traveling region 16 is reduced. It is possible to suppress temperature unevenness, degradation of yarn-making stability, and increase in cooling unevenness between individual yarns.

  Next, a second embodiment of the present invention will be described. The second embodiment of the present invention is an apparatus for producing a filament yarn, characterized in that an airflow heating means is provided in the airflow rectifying means.

  The features and effects of the second embodiment of the present invention will be described. By providing the airflow heating means in the airflow rectifying means 5, it is possible to suppress the single yarn 18 in the vicinity of the connecting portion non-running region 17 from being rapidly cooled, to suppress the cooling spots between the single yarns, By making the air temperature passing through the airflow rectifying means 5 equal to the air temperature of the airflow 20 passing through the traveling region 16 of the filament yarn 12, the airflow introduced into the inner peripheral side of the traveling region 16 of the filament yarn 12 is reduced. The air temperature can be made uniform in the circumferential direction, and cooling spots between the single yarns of the filament yarn 12 can be suppressed. Further, the lowering of the temperature of the lower surface of the spinneret 1 due to the rising air flow generated on the inner peripheral side of the traveling region 16 of the filament yarn 12, temperature fluctuations, deterioration of the yarn production stability, and the increase of cooling spots between the single yarns are suppressed. I can do it.

  Next, another embodiment of the first and second embodiments of the present invention will be described.

  This embodiment is not particularly limited by the airflow rectification means 5 having air permeability. It is suitable for various airflow rectifying means, and is not particularly limited by the number, outer shape, mounting direction, mounting position, outer dimensions, cross-sectional shape, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. The external shape of the airflow rectifying means is not particularly limited, but preferably it does not become a resistance to the airflow from the upstream side to the downstream side in the filament yarn traveling path direction, and the occurrence of fluff or the like due to the yarn hitting or catching the filament yarn As shown in FIG. 2 (c), for example, the cross-sectional area in the direction perpendicular to the filament yarn traveling path direction decreases smoothly toward the upstream side in the filament yarn traveling path direction. It should be streamlined. Similarly, the support member of the air flow rectifying means is preferably a streamlined type such as a triangular prism, a round cross section, or an elliptic cross section. In the present embodiment, the “upstream side in the running path direction of the filament yarn” means the spinneret side as viewed from the running path of the filament yarn, and the “downstream side in the running path direction of the filament yarn” means the filament yarn This means the side of the means for applying the thread oil agent, focusing, guiding, guiding and the like. The direction in which the airflow rectifying means is attached is not particularly limited, but is preferably perpendicular to the spinneret surface as shown in FIG. 1, and more preferably filament yarn by disposing means such as application of thread oil agent, bundling, guide, guide, etc. It is good to arrange | position so that it may extend along the inclination of this. The attachment position of the airflow rectifying means is not particularly limited, but at least in the filament yarn traveling path direction, it extends from the upper end of the airflow blowing surface 10, that is, from the vicinity of the cooling start position along the downstream side in the filament yarn traveling path direction. It is preferable to arrange so as to. Alternatively, from the viewpoint of rectification of the updraft upstream from the cooling start position, the upper end of the airflow rectification means may be as close as possible to the spinneret surface. Further, the attachment position of the airflow rectifying means in the direction perpendicular to the filament yarn traveling path direction passes through the connecting portion non-traveling region 17 and is within the filament yarn traveling region 16, for example, as shown in FIG. It is preferable to arrange the airflow introduced to the peripheral side at a position where the airflow can be sufficiently rectified. That is, from the viewpoint of airflow rectification on the inner circumference side of the filament yarn, it is better to align the inner circumference surface of the airflow rectifying means with the innermost circumferential surface of the filament yarn running area, and the filament yarn running area outer circumference From the viewpoint of airflow rectification on the side, the outer peripheral surface of the airflow rectifying means is preferably aligned with the outermost peripheral surface of the filament yarn traveling region. In addition, from the viewpoint of suppressing the rising airflow generated on the outer peripheral side of the air flow area of the filament yarn, the outer peripheral surface of the airflow rectifier may be as close as possible to the airflow blowing surface. Alternatively, from the viewpoint of suppressing the rapid cooling of the single yarn 18 in the vicinity of the connecting portion non-running region, the single yarn 18 may be disposed only on the outer portion in the air flow rectifying means arrangement range 22, that is, on the side close to the air flow blowing surface. The number of the airflow rectifying means is not particularly limited, but from the viewpoint of rectification of the accompanying flow generated in the traveling region of the filament yarn, or in the vicinity of the connecting portion non-traveling region in the second embodiment of the present invention. From the viewpoint of uniform heating, it is preferable to use a single member. Moreover, it is good also as a several plate-shaped member from a viewpoint that it is easy to finely adjust the pressure loss when an airflow passes the airflow rectification | straightening means. For example, when the discharge holes are arranged in a plurality of rows as shown in FIG. 2A, a plurality of plate-like members may be used in accordance with the number of rows in the ring arrangement. Although the external dimensions of the airflow rectifying means are not particularly limited, preferably, the airflow 19 that has passed through the connecting portion non-running region 17 becomes an ascending airflow, and the lower surface temperature of the spinneret 1, temperature fluctuations, deterioration in yarn production stability, and the like The length in the traveling path direction of the filament yarn of the airflow rectifying means is set to a length that can rectify the airflow even at the lower end position of the rising airflow shown in FIGS. 2 (b) and 2 (c). Is good. More preferably, in the entire air blowing region of the inner blown annular cooling means 8, the filament yarn is extended in the traveling path direction of the filament yarn so as to suppress an increase in the filament yarn cooling spots and yarn fluctuations due to the wind velocity spots in the circumferential direction of the air flow. It is preferable that the length of the airflow rectifying means is equal to the length of the airflow blowing portion 6 in the traveling path direction of the filament yarn, and at this time, the lower end of the airflow rectifying means is upstream of the lower end of the airflow blowing portion. It may be on the downstream side. The outer dimensions of the airflow rectifying means and the support member of the airflow rectifying means are not particularly limited, but preferably, the cross-sectional area in the direction perpendicular to the traveling path direction of the filament yarn is changed from the upstream side to the downstream side in the traveling path direction of the filament yarn. It is good to make it as small as possible within the range which does not impair the effect of this invention so that it may not become resistance of the flowing airflow. The cross-sectional shape of the airflow rectifying means is not particularly limited, but preferably a shape that can evenly rectify the airflow that passes through the airflow rectifying means and is introduced to the inner peripheral side as shown in FIG. 2 (a). And good. Further, the shape of the corner portion of the airflow rectifying means section may be smoothed within a range not impairing the effect of the present invention so as not to cause generation of fluff or the like due to the yarn being hit or caught by the filament yarn. The cross-sectional area in the direction perpendicular to the filament yarn travel path direction of the airflow rectifying means is not particularly limited, but the pressure loss when the airflow passes through the filament yarn travel region becomes downstream as the filament yarn deforms and solidifies. From the viewpoint of decreasing along the traveling path direction of the filament yarn, the cross-sectional area of the airflow rectifying means may be reduced in accordance with the change in the sectional area of the filament yarn. The member of the air flow rectifying means is not particularly limited, and a plurality of wires, threads, and other linear bodies may be arranged to have the same density as the filament yarn, and members composed of holes, orifices, slits, etc. Metal mesh, punching metal, rectifying grid such as honeycomb, porous member composed of particles, fibers, plates, etc., nonwoven member, porous member composed of woven or knitted fibers, porous member having porosity, cellulose A porous member constructed by laminating sheets, rings, ribbons, etc., a metal sheet or thin plate having slit-like grooves, a porous member constructed by laminating rings, ribbons, etc., metal particles, metal fibers, etc. are laminated. It is also suitable for a porous member constituted by, a porous member constituted by winding a metal linear body, a metal ribbon or the like, or a member close thereto, or a single member, a plurality of members, or a plurality of members Be et configured present embodiment is preferred. The material of the airflow rectifying means is not particularly limited, and metals such as aluminum, copper, bronze, brass, iron, carbon steel, bonde steel, stainless steel, stainless alloy, tungsten, tungsten alloy, cement, synthetic resin, natural resin, Fibers, chemical fibers, natural fibers, paper, wood, cellulose, ceramics, carbon, etc. are also suitable, and this embodiment is suitable even if they are composed of a single material or a plurality of materials.

  In addition, the heating method of the airflow heating means provided in the airflow rectification means in the second embodiment of the present invention is not particularly limited. Various heating methods such as an electric type, a heat medium type, a far-infrared type, and an induction heating type can be used. The electric type is not particularly limited. For example, heat sources such as heating wires and heaters are cast in, embedded in, or built into metals such as aluminum, copper, bronze, brass, iron, carbon steel, stainless steel, stainless steel alloy, tungsten, tungsten alloy, etc. It may be hardened, embedded, built-in or equipped with cement, synthetic resin, ceramic, carbon or the like. The heat source may be a heating wire such as a nichrome wire, a sheathed heater, a band heater, a space heater, a cartridge heater, a flexible sheathed heater, etc. The materials are aluminum, copper, bronze, brass, iron, carbon steel, bonde steel, stainless steel. Stainless steel alloy, tungsten, tungsten alloy, ceramic, carbon, etc. may be used. As stainless steel, SUS304, SUS304L, SUS310S, SUS316, SUS316L, SUS321, SUS430, SUS630, or the like may be used. The stainless alloy may be Nichrome, “Inconel (registered trademark)”, “Hastelloy (registered trademark)”, or the like. The heat medium type is not particularly limited. For example, the heating medium may be a heating medium such as “Dowsum (registered trademark)”. Further, it is also preferable that a single heat insulating member, a heat retaining member, a measuring means such as a temperature, a pressure and a flow velocity, an air flow adjusting means, and the like are provided.

  This embodiment is not particularly limited by the configuration of melt spinning. In the melt spinning process, a low-oriented undrawn yarn (hereinafter referred to as UDY) or a partially oriented yarn (hereinafter referred to as POY: Partially Oriented Yarn) is obtained. It is also suitable for a configuration of direct spinning drawing (hereinafter referred to as DSD: Direct Spin Draw) in which Full Oriented Yarn) is obtained in one step, and a configuration corresponding to OSY (One Step Yarn) which has a high spinning speed and does not require stretching. In FIG. 1, the configuration corresponding to UDY, POY, and OSY is illustrated, but the present embodiment is not limited to this. Further, the present embodiment is not particularly limited depending on the spinning speed, and is suitable even in a range of about 300 to 10,000 m / min. In the polyester filament yarn, the spinning speed is generally about 300 to 1800 m / min in the configuration corresponding to UDY, about 1800 to 5000 m / min in the configuration corresponding to POY, and about 300 to 1800 m / min in the configuration of DSD (in addition, The winding speed is about 2000 to 5000 m / min), and the configuration corresponding to OSY is about 3000 to 10000 m / min, but the above is only an example, and it is composed of polyester or other thermoplastic polymer In the filament yarn, UDY, POY, DSD, and OSY having a spinning speed exceeding the above speed range are also suitable. In the present embodiment, the “spinning speed” indicates the yarn speed when the filament yarn is solidified for the first time after being spun from the spinneret or the yarn speed at the yarn take-up means that passes for the first time.

  This embodiment is not particularly limited by the thermoplastic polymer constituting the filament yarn 12, and is also suitable for polyester, polyamide, polyphenylene, polyolefin, polystyrene, polyketone, cellulose ester-based thermoplastic polymer containing a plasticizer, and the like. It is suitable for chemical fibers such as synthetic fibers and semi-synthetic fibers that are melt-spun by spinning. Examples of polyesters suitable for this embodiment include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, polyethylene naphthalate, polybutylene naphthalate, polypropylene terephthalate, and the like. Examples of polyamides include nylon 6 and nylon 66. The present embodiment is also suitable for copolymerized polyamide. Examples of polyphenylene include polyphenylene sulfide, examples of polyolefin include polyethylene, polypropylene, and polystyrene include polystyrene.

  Moreover, this embodiment is suitable even if other copolymerization components are contained in the thermoplastic polymer in the range which does not impair the spinning stability. An example of polyester is a polyester cation dyeable yarn that can be dyed with excellent sharpness, and this embodiment is also used in the case where sodium sulfonate isophthalic acid or polyethylene glycol that are generally copolymerized is included. Is preferred. Further, matting agents such as titanium dioxide, silicon oxide, kaolin, anti-coloring agents, stabilizers, antioxidants, deodorants, flame retardants, yarn friction reducing agents, coloring pigments, as long as the yarn-making stability is not impaired. It is suitable even if various functional particles such as surface modifiers and additives such as organic compounds are contained.

  Further, the present embodiment is not particularly limited by the component configuration of each single yarn of the filament yarn 12. The component constituting each single yarn may be singular or plural. For example, a composite configuration such as a core-sheath type composite, a sea-island type composite, or a side-by-side type composite is suitable. Moreover, it is also suitable for a structure such as an alloy or blend in which a plurality of components are mixed. It is also preferable that each composite component is composed of a plurality of components such as alloys and blends.

  This embodiment is not particularly limited by the number of single yarns of the filament yarn 12, and is also suitable for monofilament yarns and multifilament yarns. Moreover, it is also suitable for filament yarns having several thousand yarns, for example, about 2000, as in the field of staples. In addition, the more the number of single yarns of filament yarns or the total number of single yarns spun from the spinneret, the more distinct the difference from the prior art. Further, in the fields of apparel and industrial use other than staples, there are many filament yarns in the range of 1 to 1000 or 1 to 600 single yarns. Further, the present embodiment is not particularly limited by the single yarn fineness of each single yarn of the filament yarn 12, and is preferably in the range of about 0.1 to several hundred dtex. Dtex indicates decitex. For example, it is also suitable for filament yarns having a single yarn fineness after melt spinning of about 0.1 to 16 dtex, 0.1 to 10 dtex, or 0.1 to 3.5 dtex. The smaller the single yarn fineness, the clearer the difference from the prior art. In addition, after melt spinning, the obtained filament yarn is further stretched to about 1.7 to 6 times, or about 1.2 to 2 times, or drawn / false twisted, etc. The filament yarn has a single yarn fineness of 0.1 to 2.6 dtex, or 0.1 to 1.6 dtex, and 0.1 to 1.1 dtex. In addition, the present embodiment is not particularly limited by the cross-sectional shape of each single yarn of the filament yarn 12, and is a round cross-section, a polygonal cross-section such as an ellipse or a triangle, a multi-leaf cross-section such as a six-leaf, an elliptic multi-leaf cross-section such as an ellipse eight-leaf. It is also suitable for character-type cross sections such as C-type, Y-type, and cross-shaped, cross-sections having hollow portions, and cross sections close to these.

  This embodiment is not particularly limited by the number of filament yarns 12 spun from the spinneret 1, and may be one or more. For example, it is suitable even if the number of yarns is 1-8 yarns, 1-6 yarns, or 1-4 yarns. In addition, it is also preferable that a filament yarn or a single yarn, which is a combination of the above-described forms related to the filament yarn or the single yarn, is spun. This embodiment is suitable even when a plurality of types of filament yarns and single yarns are spun.

  This embodiment is not particularly limited by the spinneret 1. It is suitable for various spinnerets, and is not particularly limited by the number of spinnerets, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finish, surface treatment, structure, member configuration, material, and the like. Further, the present invention is not particularly limited by the discharge hole formed in the spinneret 1. It is suitable for various discharge holes, and is not particularly limited by the number of discharge holes, outer shape, outer dimensions, hole diameter, hole length, surface shape, surface finish, surface treatment, structure, member configuration, material, and the like. In the present embodiment, the lower surface of the spinneret is entirely the lower surface of the spinneret, which is a surface in the direction perpendicular to the traveling path direction of the filament yarn, downstream of the traveling path direction of the filament yarn of the spinning nozzle. Even if there are irregularities or curved surfaces on the lower surface of the spinneret, the entire lower surface of the spinneret including them is shown.

  This embodiment is not particularly limited by the arrangement of the discharge holes formed in the spinneret 1. From the viewpoint of uniform cooling of each single yarn, an annular arrangement is preferred, but it is also suitable for other various arrangements, and this embodiment is also suitable for various arrangements such as a lattice arrangement and a staggered arrangement. . In addition, the arrangement in which non-perforated portions in which the discharge holes are not partially drilled or the distribution in which the number of ejection holes are formed is provided in a range that does not impair the quality, the stability of yarn production, etc. Is preferred. Moreover, the non-perforated part and the density of the perforated number may be provided singly, plural or plural kinds. 1 to 3 and the like, the filament yarn 12 is illustrated by several straight lines, but this shows only how the filament yarn is spun, and the number of filament yarns and the number of filament yarns are shown. The number, the bundled form of the filament yarn, the deflection state, and the like, and the number of the discharge holes and the number of the arranged forms are not limited. The present embodiment is not limited to this. The present embodiment is not particularly limited by the arrangement of the discharge holes drilled in the spinneret 1. For example, particularly when there are a plurality of single yarns spun from one spinneret, it is preferable to use filament yarns. As long as the outermost peripheral surface of the traveling path of the air does not interfere with spinning or traveling of the filament yarn, the traveling direction of the filament yarn is applied to the airflow blowing surface 10 or the inner surface of the upstream member of the inner blown annular cooling means 8. It is preferable to arrange the discharge holes formed in the spinneret 1 so as to be close to each other in a direction perpendicular to the spinneret. Further, the present embodiment is not particularly limited by the arrangement of the discharge holes drilled in the spinneret 1, but preferably a non-running region of the filament yarn inside the innermost circumferential surface as seen from the filament yarn running path is formed. It is preferable to arrange the discharge holes drilled in the spinneret 1 so as to be larger. More preferably, the discharge holes drilled in the spinneret 1 may be arranged so that the non-running region of the filament yarn outside the outermost peripheral surface viewed from the filament yarn running path is as small as possible.

  This embodiment is not particularly limited by the spinning pack 2. It is suitable for various spinning packs, and is not particularly limited by the number of spinning packs, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like.

  This embodiment is not particularly limited by the spin block 3. It is suitable for various spin blocks, and is not particularly limited by the number of spin blocks, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. Although not shown in FIGS. 1 to 3, etc., a spinning pack heater that heats and keeps a spinning pack normally disposed in the spin block, a supply pipe for a thermoplastic polymer, a heat insulating member, a heat retaining member, etc. Further, a pump or the like, an additional heating member, a heating means, or the like may be provided, and the present embodiment is not particularly limited by these. In addition, illustration of the spinneret 1, the spin pack 2, and the spin block 3 in FIGS. 1 to 3 and the like is merely an example, and forms such as outer shapes of the spinneret 1, the spin pack 2, and the spin block 3 are limited. However, the present embodiment is not limited to this.

  It is not particularly limited by the heating device or the heating cylinder 4. It is suitable for various heating devices and heating cylinders, and is not particularly limited by the number, outer shape, outer dimensions, mounting position, surface shape, surface finish, surface treatment, structure, member configuration, material, and the like. The heating method of the heating device or the heating cylinder is not particularly limited. Various heating methods such as an electric type, a heat medium type, a far-infrared type, and an induction heating type can be used. The electric type is not particularly limited. For example, heat sources such as heating wires and heaters are cast in, embedded in, or built into metals such as aluminum, copper, bronze, brass, iron, carbon steel, stainless steel, stainless steel alloy, tungsten, tungsten alloy, etc. It may be hardened, embedded, built-in or equipped with cement, synthetic resin, ceramic, carbon or the like. The heat source may be a heating wire such as a nichrome wire, a sheathed heater, a band heater, a space heater, a cartridge heater, a flexible sheathed heater, etc. The materials are aluminum, copper, bronze, brass, iron, carbon steel, bonde steel, stainless steel. Stainless steel alloy, tungsten, tungsten alloy, ceramic, carbon, etc. may be used. As stainless steel, SUS304, SUS304L, SUS310S, SUS316, SUS316L, SUS321, SUS430, SUS630, or the like may be used. The stainless alloy may be Nichrome, “Inconel (registered trademark)”, “Hastelloy (registered trademark)”, or the like. The heat medium type is not particularly limited. For example, the heating medium may be a heating medium such as “Dowsum (registered trademark)”. Further, it is also preferable that a single heat insulating member, a heat insulating member, a measuring means such as a temperature, a pressure, a flow velocity, or the like is provided.

  The present embodiment is not particularly limited by the air flow blowing surface 10 that is the filament yarn side surface from which the air flow of the air flow blowing portion is blown. It is suitable for various airflow blowing surfaces, and is not particularly limited by the number of airflow blowing surfaces, outer shape, external dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. In the inner blow annular cooling means, the outer shape of the air flow blowing surface is generally annular. This is because each filament yarn is easily cooled uniformly in the annular direction surrounding the traveling path of the filament yarn, and air current is easily supplied uniformly in the annular direction. Accordingly, the outer shape of the airflow blowing surface is preferably an annular shape, but is not particularly limited, for example, an ellipse or a polygonal shape as long as the shape of the cross section in the direction perpendicular to the traveling path direction of the filament yarn on the airflow blowing surface does not deviate from the ring, Or even if it is a shape close | similar to it, this embodiment is suitable. In addition, when the shape of the cross section in the direction perpendicular to the traveling path direction of the filament yarn on the airflow blowing surface is an ellipse, a polygonal shape, or a shape close to the shape without departing from the annular shape, the traveling path of the filament yarn on the airflow blowing surface For the inner diameter in the direction perpendicular to the direction, the diameter of the inscribed circle or circumscribed circle in the cross section in the direction perpendicular to the direction of the filament yarn traveling path on the airflow blowing surface is applied. Also, it is preferable that the outer shape of the airflow blowing surface changes along the traveling path direction of the filament yarn, and the distance between the airflow blowing surface and the filament yarn changes along the traveling path direction of the filament yarn. Is also suitable. In addition, this embodiment is suitable even if the change is singular, plural or plural.

  The present embodiment is not particularly limited by the airflow blowing unit 6. It is suitable for various airflow blowing portions, and is not particularly limited by the number of airflow blowing portions, outer shape, external dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. Further, the outer shape of the airflow blowing surface of the airflow blowing portion is as described for the outer shape of the airflow blowing surface, and the above description generally applies to the outer shape of the airflow blowing portion as a whole. In addition, the external shape of the surface other than the airflow blowing surface of the airflow blowing portion is not particularly limited, and the shape of the facing surface of the airflow blowing surface to which the airflow of the airflow blowing portion is supplied is not particularly limited. For example, the filament on the facing surface This embodiment is suitable even if the shape of the cross section in the direction perpendicular to the traveling path direction of the yarn is slightly deviated from the ring shape. In the inner blow annular cooling means, the outer shape of the air flow blowing portion and the shape of the surface facing the air flow blowing surface to which the air flow of the air flow blowing portion is supplied are generally annular. Each single yarn of the filament yarn is easily cooled uniformly in the annular direction surrounding the traveling path of the filament yarn, and it is easy to give a pressure loss to the air flow uniformly in the annular direction, and the air flow uniformly in the annular direction. This is because it is easy to supply. In addition, this embodiment is suitable even if the shape of the cross section in the direction perpendicular to the traveling path direction of the filament yarn of the airflow blowing portion is partially different, and this embodiment is suitable, even if there are one or a plurality of different portions. Is preferred. In addition, this embodiment is suitable even if the shape of the cross section in the direction perpendicular to the traveling path direction of the filament yarn in the airflow blowing portion changes singly, plurally, or plural types along the traveling path direction of the filament yarn. The length of the airflow blowing part is not particularly limited, but the yarn stress near the solidification position of each single yarn has a deep correlation with the quality such as strength and elongation, and the quality increases when the cooling spots between each single yarn increase. For reasons known to lead to a decrease, it is preferable that the length be such that rectification by airflow is possible at least near the solidification position. In addition, the member of the airflow blowing portion is not particularly limited, a member composed of holes, orifices, slits, etc., a rectifying grid such as a wire mesh, punching metal, honeycomb, etc., a porous member composed of particles, fibers, plates, etc. A porous member constituted by weaving or knitting fibers, a porous member having porosity, a porous member constituted by laminating cellulose sheets or rings, ribbons, etc., a metal sheet having slit-like grooves, Porous members constructed by laminating thin plates, rings, ribbons, etc., porous members constructed by laminating metal particles, metal fibers, etc., porous members constructed by winding metal linear bodies, metal ribbons, etc. Even if it is a member close | similar to these, even if it is comprised from a single or multiple or multiple types of member, this embodiment is suitable. The material of the airflow blowing part is not particularly limited, and metals such as aluminum, copper, bronze, brass, iron, carbon steel, bonde steel, stainless steel, stainless alloy, tungsten, tungsten alloy, cement, synthetic resin, natural resin, Fibers, chemical fibers, natural fibers, paper, wood, cellulose, ceramics, carbon, etc. are also suitable, and this embodiment is suitable even if they are composed of a single material or a plurality of materials. Further, even if a heat insulating member, a heat retaining member, a heating member, a cooling member, a heating unit, a cooling unit, a measuring unit such as a temperature, and the like are provided, this embodiment is suitable. Further, it is preferable that the air flow blowing portion is composed of one or a plurality of or a plurality of types of air flow blowing portions, and it is also preferable that the air flow blowing portion is provided in the cooling means. Even if a single, a plurality, or a plurality of types of air blowout portions are provided for a single, a plurality, or a plurality of types of spinneret or spin pack, this embodiment is suitable.

  This embodiment is not particularly limited by the airflow 7 blown out from the airflow blowing portion. It is suitable for various airflows, and is not particularly limited by airflow components, temperature, humidity, flow velocity, flow rate, flow direction, etc., their distribution, and the like. For example, the components of the airflow may be components such as air or oxygen contained in normal air, air containing moisture, inert gas such as noble gas or nitrogen, steam, or a mixture thereof. Is preferred. In general, air or dry air is often used. The temperature of the airflow is, for example, generally about several degrees C or about 10 degrees C to about 20 degrees C or about 30 degrees C, but is not particularly limited. For example, this embodiment is suitable even when a high-temperature airflow higher than the above temperature is used for the purpose of slow cooling or the like. For example, the flow rate of the airflow is generally about 1 to 5 m / min to about 100 to 200 m / min in many cases, but is not particularly limited. This embodiment is suitable even when a flow rate within the above range or other ranges is used depending on the number of single filament yarns, single yarn fineness, spinning speed, cooling start distance QTD, and the like. The flow direction of the airflow is not particularly limited. For example, the horizontal direction, the horizontal direction from the horizontal direction, the upstream direction of the filament yarn, the downstream direction, the downward direction, the perpendicular direction to the traveling direction of the filament yarn and each single yarn thereof. This embodiment is also suitable for the direction, the upstream side upward direction, the downstream side downward direction, the traveling direction of the filament yarn and each single yarn thereof, and the like. Although not particularly limited, preferably, the flow direction of the airflow is preferably a direction perpendicular to the traveling direction of the filament yarn or each single yarn thereof, or a downstream downward direction. This is because if the flow direction of the air flow is set to the upper upstream side from the direction perpendicular to the traveling direction of the filament yarn and each single yarn, the air resistance acting on the filament yarn and each single yarn increases. Distributions of airflow components, temperature, humidity, flow velocity, flow rate, flow direction, etc. are not particularly limited, and this embodiment is suitable for various distributions. The flow velocity distribution in the traveling direction and the traveling path direction of the filament yarn of the air current is not particularly limited, and the filament yarn distribution or the filament yarn having almost no change along the traveling direction or the traveling path direction of the filament yarn as long as the stability of the yarn production is not impaired. The distribution increases or decreases gradually from the upstream side to the downstream side in the traveling direction or the traveling path direction, or the increase or decrease of the filament yarn from the upstream side to the downstream side in the traveling direction or the traveling path direction is single or plural or plural. Even a distribution with a species is suitable. The flow velocity distribution in the annular direction surrounding the traveling path of the filament yarn of the air current is not particularly limited, and similarly, this embodiment is suitable for various distributions within a range that does not impair the yarn production stability. Although not particularly limited, in the inner blown annular cooling means, the flow velocity distribution in the annular direction surrounding the travel path of the filament yarn of the airflow is generally made uniform, and it is preferable to do so. This is because it is easy to cool each single yarn of the filament yarn uniformly in the annular direction. In general, the components, temperature, humidity, flow velocity, flow rate, flow direction, dynamic pressure, static pressure, etc. of the airflow and their distribution are generally adjusted, controlled, and managed. Moreover, it is often adjusted depending on the type of filament yarn. In addition, in FIGS. 1 to 3 and the like, the air flow 7 blown out from the air flow blowing portion is illustrated by a large number of arrows, but this simply shows how the air flow is blown out. It does not limit forms, such as a flow rate and a flow direction, and this embodiment is not restricted to this.

  This embodiment is not particularly limited by the inner blown annular cooling means 8. It is suitable for various internal blown annular cooling means, and is not particularly limited by the number, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. In addition, in the inner blown annular cooling means and its surroundings, there are members such as a heat insulating member, a heat retaining member, a heating member, a heating means, a cooling member, a cooling means, a measuring means such as temperature, and the air flow passage of the inner blown annular cooling means. Members such as labyrinth structures, rectifier lattice structures such as honeycombs, pressure loss members, etc., members as described in the members of the air flow blowing part, heat insulating members, heat retaining members, heating members, heating means, cooling members, cooling means, temperature, etc. It is also preferable that a single member, a plurality of members, or a plurality of members such as measuring means are provided. Further, the present embodiment is not particularly limited by the upstream member of the inner blowing annular cooling means, the inner side surface of the upstream member, and the like. Although not particularly limited, the traveling path direction of the filament yarn on the inner surface of the upstream member of the inner blowing annular cooling means at the lower end downstream of the traveling path direction of the filament yarn on the inner surface of the upstream member of the inner blowing annular cooling means. The inner diameter in the direction perpendicular to the air flow is preferably provided so as to be the same as or smaller than the inner diameter in the direction perpendicular to the traveling path direction of the filament yarn on the airflow blowing surface at the upper end of the airflow blowing surface. This is because the upstream member of the inner blowing annular cooling means can more reliably support, hold, seal, etc. the air flow blowing surface 10 and the air flow blowing unit 6. Also, the direction perpendicular to the traveling path direction of the filament yarn on the inner side surface of the upstream member of the inner blown annular cooling means at the lower end on the downstream side in the traveling path direction of the filament yarn on the inner side surface of the upstream member of the inner blowing annular cooling means The upstream member of the inner blown annular cooling means is arranged so that the inner diameter of the inner airflow blowing surface is the same as or smaller than the inner diameter of the airflow blowing surface at the upper end of the airflow blowing surface. By doing so, the outermost peripheral surface of the filament yarn traveling path and the inner surface of the upstream member of the inner blown annular cooling means are closer, and the outermost peripheral surface of the filament yarn travel path and the upstream side of the inner blown annular cooling means The flow path between the inner surface and the inner surface of the member is further narrowed, causing yarn fluctuations, cooling spots, etc. in the non-traveling region of the filament yarn outside the outermost peripheral surface viewed from the filament yarn travel path. Factors and updraft is difficult to form made is because it is possible to further difficult to generate these problems. In addition, the present embodiment is also an inner blown annular cooling means in which the above-mentioned various forms related to the inner blown annular cooling means are combined, including each form such as the airflow blowing surface, the airflow blowing portion, the airflow chamber, and the airflow supply port. Is preferred. In addition, this embodiment is suitable even if single, plural or plural kinds of inner blown annular cooling means are provided for one or plural or plural kinds of spinneret or spin pack. In addition, illustration of the airflow blowing surface 10, the airflow blowing part 6, the airflow chamber 9, the airflow supply port 11, the inner blowing annular cooling means 8 etc. in FIGS. 1-3 is an example to the last, such as these external shapes, etc. A form is not limited and this embodiment is not limited to this. Moreover, the arrow described in the airflow supply port 11 in FIG. 1 simply indicates how the airflow flows, and does not limit the flow rate, flow rate, flow direction, and the like of the airflow. Not limited to.

  This embodiment is not particularly limited by the airflow chamber 9 and the airflow supply port 11. It is suitable for various airflow chambers and airflow supply ports, and is not particularly limited by the number, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. Also, members such as labyrinth structures and rectifier lattice structures such as honeycombs, pressure loss members, etc., members as described above for members of the airflow blowing part, heat insulating members, heat retaining members, heating members, cooling members, heating means, cooling means, temperature It is also preferable to provide one or more or a plurality of types of measuring means such as pressure, flow velocity, etc., airflow adjusting means, and the like. Further, pressure loss is caused in the air flow chamber 9 and the air flow passage in the inner blown annular cooling means 8 so that the flow velocity distribution in the annular direction surrounding the traveling path of the filament yarn of the airflow 7 blown out from the air flow blowing surface becomes uniform. A member etc. may be provided. In addition, the configuration in which the size of the airflow passage in the airflow chamber 9 and the inner blown annular cooling means 8 hardly changes along the traveling direction and the traveling path direction of the filament yarn, the traveling direction and the traveling path of the filament yarn Such as a configuration that expands and contracts from the upstream side to the downstream side in the direction, or a configuration that has one or more or multiple types of expansion and contraction from the upstream side to the downstream side in the traveling direction or the traveling path direction of the filament yarn. Is also suitable. Further, it is also preferable that a single or plural or plural kinds of air flow chambers and air flow supply ports are provided for the single or plural or plural kinds of cooling means or air flow blowing portions, and the single or plural or plural kinds of air flows. This embodiment is suitable even when one or a plurality of or a plurality of types of air currents, for example, air currents having different materials and compositions, temperatures, flow velocities, flow rates, and the like are supplied to the chamber and the air current supply port.

  This embodiment is not particularly limited by the means 13 for applying the thread oil agent, converging, guiding, guiding, and the like. It is suitable for various means, and is not particularly limited by the number of means, outer shape, outer dimensions, mounting position / orientation, surface shape, surface finishing, surface treatment, structure, member configuration, material, and the like. The thread oil agent applying means may be either a guide oil supply system or a roller oil supply system, and the present embodiment is preferable whether the thread oil agent application / focusing / guide / guide means is non-rotating means or rotating means. In addition, the above means may be provided without being provided, and when provided, any means such as application of a thread oil agent, focusing, guide, guide, etc. may be provided, or any one of them may be provided, or they may be provided. Even if a single, a plurality, or a plurality of types are provided, means in which the above embodiments are combined may be provided in the same manner, and is not particularly limited.

  This embodiment is not particularly limited by the yarn take-up means 14 and the yarn take-up means 15. Suitable for various thread take-up means, thread take-up means, not limited by the number of means, external shape, external dimensions, mounting position and orientation, surface shape, surface finish, surface treatment, structure, member configuration, material, etc. For example, the yarn take-up means is preferably a yarn suction means such as a roller or a suction gun, a yarn feed-out means for sending filament yarn by airflow, a yarn transport means such as a conveyor, etc. For example, the yarn take-up means is a filament This embodiment is also suitable for yarn winding means such as a winder type that winds a yarn or a can type that receives a filament yarn in a container such as a bag. Further, it is preferable that the filament yarn is hung on the roller of the yarn take-up means a plurality of times, and it is also preferred that the yarn take-up means also serves as the drawing means. In addition, thread oiling means, thread winding means, thread oiling means, bundling, guiding and guiding means, heating roller, heating tube and other thread heating means, thread humidifying means, thread relaxing means, thread stretching means, thread suction It is also preferable that a single means, a plurality of yarn feeding means, a yarn conveying means, or the like is provided. Further, it is preferable that a single, a plurality, or a plurality of types of yarn take-up means and yarn take-up means are provided, or that a thread take-up means and a yarn take-up means in which the above embodiments are combined are provided in the same manner.

  The present invention is an extremely versatile invention and is suitable for many filament yarns obtained by melt spinning. In particular, the uniformity of yarn thickness and quality, the quality of strength and elongation, the quality of fluff and the like, the fineness of single yarn, multifilamentized filament yarn and single yarn irregular cross section It is suitable for producing difficult-to-spun filament yarns such as filament yarns, filament yarns modified with thermoplastic polymers, and filament yarns composed of special thermoplastic polymers such as high glass transition temperature. In addition, the present invention is not particularly limited by the configuration of melt spinning of the filament yarn, and is not limited to the configuration of melt spinning corresponding to UDY or POY, but can also be applied to the configuration of melt spinning corresponding to DSD and OSY. The application range is not limited to these.

It is the schematic which illustrated typically an example of the structure of the preferable melt spinning of this embodiment. FIG. 2 is a schematic diagram of an AA arrow view of FIG. 1 and a preferred flow schematically illustrating an example of a configuration of melt spinning around a spinneret according to an example of the present embodiment. It is a conceptual diagram of a BB section of Drawing 2 (a) showing typically an example of a form of a flow formed in the circumference of a spinneret concerning one example of this embodiment. It is the conceptual diagram of CC cross section of Fig.2 (a) which illustrated typically an example of the form of the flow formed around the spinneret which concerns on one Example of this embodiment. It is an example of the form of the cross-sectional schematic of the direction perpendicular | vertical to the running path | route direction of a filament yarn, and the example of the unpreferable flow which illustrated typically the example of the structure of the melt spinning used conventionally. It is a conceptual diagram of a DD section of Drawing 3 (a) which illustrated typically an example of a form of a flow formed around a spinneret concerning the composition of melt spinning used conventionally. It is a conceptual diagram of an EE section of Drawing 3 (a) which illustrated typically an example of a form of a flow formed in the circumference of a spinneret concerning the composition of melt spinning used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spinneret 2 Spin pack 3 Spin block 4 Heating apparatus and heating cylinder 5 Airflow rectification means 6 Airflow blowing part 7 Airflow blown out from the airflow blowing part 8 Inner blown annular cooling means 9 Airflow chamber 10 Airflow blowing surface 11 Airflow supply port 12 Filament yarn 13 Means for applying oil, converging, guiding, guiding, etc. 14 Taking-up means 15 Winding means 16 Filament yarn traveling area 17 Non-running area of connecting part 18 Single yarn near non-running area of connecting part 19 Non-running area of connecting part Airflow passing 20 Airflow passing the filament yarn traveling region 21 Airflow passing the airflow rectification means 22 Range of airflow rectification means QTD Cooling start distance

Claims (3)

An apparatus for producing filament yarn by melt spinning a thermoplastic polymer, which satisfies the following requirements (1) to (3):
(1) The filament yarn travel path corresponds to a non-perforated portion in which the discharge holes are not perforated in the arrangement of the plurality of ejection holes for spinning each filament yarn perforated in the spinneret. It is divided into at least two groups by the non-piercing portion so as to have a non-running region of the filament yarn along the direction.
(2) Disposing an internal blow cooling means having an air flow blowing surface for cooling the filament yarn spun from the spinneret by blowing an air flow inward from the outer peripheral side of the filament yarn traveling path.
(3) a non-running region of the filament yarn, and a connecting portion non-running region that connects an inner non-running region and an outer non-running region of the traveling path of the filament yarn divided into two or more groups; An air flow rectifying means having air permeability extending along the traveling path direction of the filament yarn is disposed in at least a part of the vicinity of the outer side and the inner side of the connecting portion non-traveling region. The apparatus for producing a filament yarn according to claim 1, wherein an airflow heating means is disposed in the airflow rectifying means. A method for producing a filament yarn by melt-spinning a thermoplastic polymer, wherein a plurality of discharge holes for spinning each single yarn of the formed filament yarn are not provided with no discharge holes. The filament yarn is spun from a spinneret divided into at least two groups by the non-perforating portion so as to have a non-traveling region of the filament yarn along the traveling path direction of the filament yarn corresponding to the perforated portion, The filament yarn spun from the spinneret is cooled using an internal blow cooling means having an air flow blowing surface for blowing and cooling an air flow inward from the outer peripheral side of the filament yarn traveling path, Non-traveling region, a connecting portion non-traveling region that connects an inner non-traveling region and an outer non-traveling region of the travel path of the filament yarn divided into two or more groups The air current blown to the filament yarn is rectified by air flow rectifying means having air permeability extending along the traveling path direction of the filament yarn in at least a part of the vicinity of the outer side and the inner side of the connecting portion non-traveling region. A method for producing a filament yarn, comprising:

Images