JP2006249617A - Method and apparatus for producing high-property filament at high draw ratio - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a high-property drawn filament at a high draw ratio to be easily and continuously obtained without requiring a special, high-accuracy and high-level apparatus by a simple means; and to provide a means for drawing a multifilament, a functional filament, a high-modulus filament or the like having the high properties at the high draw ratio. <P>SOLUTION: The filament with the high properties is produced at the high draw ratio by heating a raw filament with bundles of far infrared rays from several positions, drawing the filament at a constant draw ratio of five times or more by a taking-up device, and gradually decreasing the output of the bundles of the far infrared rays so that the properties may be most suitable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a high-magnification and high-filament manufacturing method and an apparatus for manufacturing the same, and in particular, by an infrared method, multifilaments, functional filaments such as split filaments and core-sheath filaments, or high-elastic filaments at high magnification. The present invention relates to means for producing filaments having good physical properties.

  Various methods have been proposed for drawing filaments by the infrared method (for example, JP-A 63-249732, International Publication WO 00/73556 A1). However, these drawing means are difficult to adapt to multifilaments, and when applied to core-sheath filaments, there are various problems such as the balance between the core and the sheath being lost. Was not obtained.

  The inventor has also invented a means for obtaining ultrafine filaments at a very high draw ratio of 1,000 times or more with molecular orientation by the infrared method (for example, JP2003-166115A, JP2004). -107851, International Publication WO 2004/085723 A1). From these, filaments with extremely fine molecular orientation were obtained by simple means. In the present invention, functional filaments such as split filaments and core-sheath filaments, highly elastic filaments, etc. have a draw ratio higher than the draw ratio of ordinary filaments (less than 10 times), and the physical properties of these filaments. An object of the present invention is to provide a stretching means that can be maximized.

JP-A-63-249732 (first page, FIG. 1). International Publication WO 00/73556 A1 (pages 22-24, FIGS. 1 and 3). JP 2003-166115 A (page 1-2, FIGS. 4 and 5). JP 2004-107851 A (page 1-2, FIGS. 1 and 3). International Publication WO 2004/085723 A1 (pages 27-30, FIGS. 1 and 2). Akiyasu Suzuki and 1 other "Journal of Applied Polymer Science", vol. 88, p. 3279-3283, 2003 (USA). Akiyasu Suzuki and 1 other "Journal of Applied Polymer Science", vol. 92, p. 1449-1453, 2004 (USA). Akiyasu Suzuki and 1 other "Journal of Applied Polymer Science", vol. 92, p. 1534-1539, 2004, (USA).

  The present invention is a further development of the above-described prior art, and the object of the present invention is to easily obtain a high draw ratio by a simple means without requiring a special high-precision and high-level apparatus. Thus, a stretched filament having high physical properties can be obtained continuously. Another object of the present invention is that it has been difficult to draw multifilaments, split filaments, core-sheath filaments, or highly elastic filaments using conventional infrared stretching methods. It is intended to provide a means for stretching a material at high magnification with high physical properties.

  The present invention has been made in order to achieve the above object, and features as a method for producing a filament are as follows. The present invention includes a step in which the original filament is sent out by the filament feeding means, a step in which the sent out original filament is heated with infrared light beams from a plurality of locations, and the heated filament is more than five times by a take-up device. A filament having a high magnification and high physical properties, including a step of stretching at a constant magnification and a step of reducing the output of the infrared light beam so that the physical properties are most suitable by measuring the physical properties of the stretched filament. It relates to the manufacturing method. The present invention also relates to a method for producing a filament having a high magnification and high physical properties, wherein the original filament is a multifilament. The present invention also relates to a method for producing a high-magnification filament having high physical properties, wherein the original filament is a functional filament. The present invention also relates to a method for producing a filament having high physical properties and high magnification, wherein the original filament is a high modulus filament. The present invention also relates to a method for producing a filament with high magnification and high physical properties, wherein the heating by the infrared light flux from the plurality of locations is radiation from a direction symmetrical to the traveling axis of the filament. The present invention also relates to a method for producing a filament with high magnification and high physical properties, wherein the drawn filament is heat treated by a heating device after the drawing. Furthermore, this invention relates to the manufacturing method of the nonwoven fabric which consists of a continuous filament by the said extending | stretching filament optimized by the said means being integrated | stacked on a conveyor.

The present invention has been made to achieve the above object, and features as a filament manufacturing apparatus are as follows.
The present invention includes an original filament delivery means, an infrared radiation device configured such that the delivered original filament is heated by infrared light beams from a plurality of locations, and the heated filament is a constant that is five times or more. A take-up device that draws the film so as to be drawn at a magnification; a device that measures the physical properties of the drawn filament; and a control device that controls the output of the infrared light beam so that the physical properties of the drawn filament are most suitable. The present invention relates to an apparatus for manufacturing filaments having high magnification and high physical properties. The present invention also relates to an apparatus for manufacturing a filament having high magnification and high physical properties, wherein the infrared radiation device is a carbon dioxide laser oscillation device. Further, the present invention provides a high-magnification, high-physical filament in which radiation from a plurality of locations of the infrared luminous flux is collected on the original filament by reflecting the luminous flux emitted from one direction using a mirror It relates to a manufacturing apparatus. The present invention also relates to an apparatus for manufacturing a filament with high magnification and high physical properties, wherein the radiation from a plurality of locations of the infrared light flux is a light flux from a plurality of infrared light flux radiation devices. In the present invention, the drawing device is further provided with a heat treatment device, and the filament drawn under the optimum conditions is heat treated by passing through the heat treatment device, and the drawing device is high in magnification and high. The present invention relates to a filament manufacturing apparatus. Furthermore, the present invention relates to an apparatus for producing a nonwoven fabric comprising continuous filaments, wherein the filament production apparatus is further provided with a conveyor, and the filaments stretched under optimum conditions are arranged on the conveyor.

  The present invention provides a drawn filament having high physical properties at a high magnification by drawing an original filament. In the present invention, the original filament may be one that has already been manufactured as a filament and wound on a reel or the like, or a melted or dissolved filament that has become a filament by cooling or solidification in the spinning process. It is used subsequently in the spinning process and can be used as a raw material for the stretching means of the present invention. Here, the filament is a substantially continuous fiber, and is distinguished from a short fiber having a length of several millimeters to several tens of millimeters. The original filament is desirably present alone, but it can be used even if it is assembled into several to several tens. In addition, the case where the filament in this invention is a single filament which consists of one filament, and the case where it is the multifilament which consists of a some filament are included. In the filament drawing in the infrared method, it was difficult to draw a multifilament at a high magnification, but the present invention is characterized in that it is made easy. The tension applied to a single filament is expressed as “per filament”, but for a single filament, it means “per filament”, and for a multifilament, the “individual” "Per filament".

  The raw filaments of the present invention include polyesters including polyethylene terephthalate and aliphatic polyester, polyamides including nylon (including nylon 6, nylon 66), polyolefins including polypropylene and polyethylene, polyvinyl alcohol polymers, acrylonitrile polymers, fluorine polymers, Any filament made of a thermoplastic polymer such as a vinyl chloride polymer, a styrene polymer, a polyoxymethylene, or an ether ester polymer can be used. In particular, polyethylene terephthalate, nylon (including nylon 6, nylon 66), and polypropylene have good stretchability and good molecular orientation, and are particularly suitable for the production of the drawn filament of the present invention. In addition, biodegradable polymers such as polylactic acid and polyglycolic acid, biodegradable and absorbable polymers, and the like have good stretchability by the infrared beam of the present invention, and are particularly suitable for the production of filaments having high magnification and high physical properties of the present invention.

  The stretching means of the present invention is particularly suitable for stretching functional filaments and highly elastic filaments. For these filaments, the selection of stretching conditions is very important in order to obtain the desired high physical properties. In addition to stretching conditions, it is particularly important to heat uniformly during stretching. The functional filament refers to a filament that can exhibit a special function by having various structures such as a core-sheath filament, a hollow filament, a modified cross-section filament, a split filament, and a sea-island filament. If these filaments are not drawn under the optimum drawing conditions, for example, the positional relationship between the core and sheath of the core-sheath filament will be greatly destroyed, the hole of the hollow filament will be perforated, or the splitting properties due to the stretching of the split filaments Because it gets worse. The high modulus filament is a filament that exhibits a high modulus of elasticity when stretched, and is 100 cN / dtex or more, preferably 200 cN / dtex or more, and most preferably 300 cN / dtex or more. These are distinguished from filaments for clothing having an elastic modulus of about several tens of cN / dtex. Examples of the high elastic modulus filament include aramid filaments, wholly aromatic polyesters, heterocyclic polymers such as poly-p-phenylenebenzobisoxazole, and filaments obtained by ultradrawing ultrahigh molecular weight polyethylene.

In the continuous method of the present invention, drawing is performed on the original filament sent out from the sending means. As the delivery means, various types can be used as long as the filament can be delivered at a constant delivery speed such as a combination of a nip roller and several stages of driving rollers.

  In the stretching of the present invention, it is preferable to provide a guide for regulating the position of the original filament immediately before the infrared heating. The heating by the infrared light beam is characterized in that it is heated in a very narrow range, and since the stretching tension is small at the start of stretching, the stretched portion is likely to shake, so a guide tool for regulating the position of the filament is provided. The guide can be a combination of thin tubes, grooves, combs, and thin bars.

  The original filament of the present invention is heated to an appropriate stretching temperature by an infrared light beam irradiated by an infrared heating means (including a laser). Infrared rays heat the original filament, but the range heated to an appropriate stretching temperature is preferably within 4 mm (length 8 mm) in the axial direction of the filament at the center of the filament, more preferably 3 mm or less, most preferably Preferably it is heated at 2 mm or less. The present invention makes it possible to stretch with a high degree of molecular orientation by abruptly stretching in a narrow region, and to reduce stretching breaks even with ultrahigh magnification stretching. When the filament irradiated with the infrared light beam is a multifilament, the center of the filament means the center of the filament bundle of the multifilament.

  For the infrared heating of the present invention, heating with a laser is particularly preferred. Among these, a carbon dioxide laser with a wavelength of 10.6 μm and a YAG (yttrium, aluminum, garnet) laser with a wavelength of 1.06 μm are particularly preferable. Lasers can narrow the radiation range to a small size, and are concentrated on a specific wavelength, so there is little wasted energy. The carbon dioxide laser of the present invention has a power density of 10 W / cm 2 or more, preferably 20 W / cm 2 or more, and most preferably 30 W / cm 2 or more. This is because the high magnification stretching of the present invention can be achieved by concentrating high power density energy in a narrow stretching region. In addition, the power density at the time of irradiating on a filament from several places shows each power density in total.

  In this case, the infrared light beam is preferably irradiated from a plurality of locations. This is because heating from only one side of the filament makes stretching difficult due to asymmetric heating when the melting temperature of the polymer is high or when uniform heating is required to obtain good physical properties. In addition, it is preferable that the irradiation from several places is irradiation from a symmetrical direction with respect to the traveling axis of a filament. This is because it is necessary to thoroughly carry out symmetrical heating in order to obtain a filament with high physical properties at a high magnification. Such irradiation from a plurality of locations may be performed from a plurality of light sources of infrared light beams, but a light beam from one light source is reflected by a mirror, and is irradiated a plurality of times along the path of the original filament. Can also be achieved. As the mirror, not only a fixed type but also a rotating type such as a polygon mirror can be used.

  As another means for irradiation from a plurality of places, there is a means for irradiating a light source from a plurality of light sources to the original filament from a plurality of places. A high-power light source can be obtained by using a plurality of sets of stable and inexpensive laser oscillators with a relatively small laser light source.

  In the present invention, the drawn filament obtained is drawn at a high magnification of 5 times or more, preferably 10 times or more, more preferably 30 times or more, and most preferably 50 times or more. In normal drawing of synthetic fibers, it is 3 to 7 times, and in super drawing of PET fibers, it is drawn about 10 times, but it is not expected to have high physical properties. The prior invention of the present inventors (Patent Documents 1 to 3) aims to obtain ultrafine filaments by performing ultra-high draw ratios such as several hundreds or thousands of times. In the present invention, since a stretching means for obtaining high physical properties is provided, high-strength stretching is not necessarily required. The draw ratio of the apparatus is determined by the feeding means and the take-up means of the original filament. In the present invention, the draw ratio is 5 times or more, preferably 10 times or more, under the conditions that the physical properties are best. In the high modulus filament, the physical properties may be best in the range of 5 to 10 times.

  In the present invention, the film is initially stretched by an infrared light beam having a sufficient excess energy at a constant stretching ratio of 5 times or more. From the stable stretched state where there is no stretch break, the energy output of the infrared light beam is gradually lowered, and the physical properties of the stretched filament are measured to study the optimum stretch conditions. As for the physical properties of the drawn filament in the present invention, birefringence is effectively used for filaments that are prominent in birefringence of the drawn filament, such as polyester, polyamide, and polyolefin. Since birefringence can be measured even in-line, an optimum value can be obtained by providing birefringence measuring means in the subsequent process of the stretching means of the present invention and continuously measuring it. For filaments characterized by strength and elastic modulus, the elastic modulus is measured. The elastic modulus can be measured in-line by a vibration method or a sonic method, but the strength and elastic modulus can also be obtained by measuring the drawn filaments dynamically in a batch.

  For functional filaments such as core-sheath filaments, hollow filaments, irregular cross-section filaments, split filaments, sea-island filaments, etc., in addition to the above-mentioned birefringence and elastic modulus, for example, splitting filaments have splitting properties. Can be used as physical properties. In the case of a core-sheath filament, the degree of eccentricity can be made a physical property based on the positional relationship between the core and the sheath. These physical properties are selected appropriately depending on the type of the target filament and are desirably measured in-line, but can also be measured in batches.

In addition, the orientation degree f measured by the birefringence of the original filament in the present invention is represented by the following formula. In this equation, correction of density is necessary, but it is complicated and is ignored.
f (%) = (Δn / Δnc) × 100
Here, Δn is the birefringence obtained by actual measurement, and Δnc is the birefringence of the crystal of each polymer, which is obtained from theoretical values, etc., and these values do not necessarily match, but are generally used values. Polyethylene terephthalate has a value of 0.24, nylon 6 or 66 has a value of 0.096, and isotactic polypropylene has a value of 0.042. Further, the draw ratio λ in the present invention is represented by the following formula from the diameter do of the original filament and the diameter d of the filament after drawing. In this case, the density of the filament is calculated as constant. The fiber diameter is measured with a scanning electron microscope (SEM) using an average value of 10 points based on a photograph taken at 350 times the original filament and 1000 times the drawn filament.
λ = (do / d) 2

  After the drawing step of the present invention, a heating device having a heating zone can be provided to heat-treat the drawn filament. Heating can be performed by means such as passing through a heated gas, radiation heating such as infrared heating, passing over a heating roller, or a combination thereof. The heat treatment brings about various effects such as reducing the thermal shrinkage of the drawn filament, increasing the crystallinity, reducing the change with time of the filament, and improving the Young's modulus.

  The stretched filament of the present invention can also be wound after further stretching. As the means for stretching in the subsequent stage, the stretching means performed in the previous stage can be used. However, when the stretching is sufficiently high in the previous stage, stretching between rollers such as a normal godet roller or pin stretching is performed. Etc. can also be used. Moreover, it is desirable to use the zone extending | stretching method and zone heat processing method by this inventor (nonpatent literature 1, 2, 3) as a means of the post extending | stretching of this invention.

  In the subsequent process, the drawn filament of the present invention is wound on a bobbin, cheese, reel, or the like (hereinafter may be represented by a reel) to obtain a product in the form of a reel or cheese roll. In these windings, the drawn filaments are preferably wound while being traversed. It is because a uniform winding form can be ensured by traversing. When winding the multifilament, it is desirable to wind the filament by interlacing the filaments using an air entanglement nozzle or the like. The filament winding speed in the present invention is a means for winding the filament at a constant feeding speed such as a combination of a nip roller and several stages of driving rollers.

  The filaments drawn under the optimum conditions of the present invention or the filaments drawn and heat-treated as necessary can be accumulated on a conveyor to form a nonwoven fabric composed of continuous filaments. A spunbonded nonwoven fabric, which is a typical nonwoven fabric made of conventional filaments, has an insufficient filament strength of 1 to 2 cN / dtex. However, in the present invention, it can provide sufficient strength. Moreover, the nonwoven fabric in this invention can provide the nonwoven fabric which consists of continuous filaments, such as a core sheath filament, a split filament, a hollow filament, and a deformed cross-section filament, by a simple means.

  As described above, the present invention is characterized in that a filament having high physical properties can be easily obtained at a high magnification by a simple means without requiring a special high-precision and high-level apparatus. Further, it has been difficult for conventional filament stretching means by the infrared method to stretch multifilaments, filaments with different diameters, split filaments, hollow filaments, core-sheath filaments, or highly elastic filaments. Then, it is providing the means of extending | stretching those filaments with high physical property and high magnification. Moreover, the core-sheath filament as a functional filament can raise crimpability by making eccentricity large. Further, when the sheath is an adhesive polymer, it can be a filament in which the strength of the core polymer is sufficiently increased. Further, in the split filament, the obtained filament has good splittability, and is easily split into fine filaments due to a tapping effect by a loom or a water jet in a subsequent process. Moreover, the long-fiber nonwoven fabric composed of filaments optimally stretched according to the present invention can be a nonwoven fabric composed of filaments having high filament strength and various functions.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the continuous process of the present invention. The original filament 1 is fed out from the state wound on the reel 11, and is fed out from the feeding nip rollers 13a and 13b through the comb 12 at a constant speed. The original filament 1 may be a single filament or a multifilament. Further, the reels 11 may be fed out from a plurality of reels 11, combined with a comb 12, and sent to the next process. The delivered original filament 1 is regulated in position by the guide 15 and descends at a constant speed. The guide 15 accurately determines the irradiation position of the laser and the traveling position of the filament. In the drawing, an injection needle having an inner diameter of 0.5 mm is used, but a thin pipe, a comb, a snail wire, or the like can also be used. A laser beam 6 is irradiated from the laser oscillation device 5 to the heating region M having a certain width from the laser oscillation device 5 directly below the guide tool 15. This laser beam 6 is reflected by mirrors 22, 24, 25, etc., which will be described in detail in FIG. 2, and irradiates the filament 1 from a plurality of locations. The original filament 1 heated by the laser beam 6 is drawn at a constant draw ratio of 5 times or more determined by the sending nip roll 13 and the take-up nip roller 16, and descends as a drawn filament 17. In the descending process, a birefringence measuring device 18 is provided to measure birefringence. In this first stage, the output of the laser beam 6 of the laser oscillation device 5 is maintained at a large value that does not cause stretching. After that, the output of the laser beam 6 of the laser oscillation device 5 is lowered so that the birefringence measured by the birefringence measuring device 18 approaches the target birefringence, and the drawn filament 17 having the optimum birefringence is obtained. Is wound on the take-up reel 19.

  In the present invention, in the process in which the stretched filament 17 is wound around the take-up reel 19, it is omitted in the figure, but a heat treatment process may be provided. As another heat treatment means, the filament wound on the take-up reel can be heat-treated by being heated with hot air generated by a hot air generator or the like. This heat treatment takes a long time to be wound, so that heat treatment can be performed for a long time.

  FIG. 2 shows an example of means for irradiating the original filament from a plurality of locations with the infrared light beam employed in the present invention. FIG. A is a plan view and FIG. B is a side view. The infrared light beam 21 a irradiated from the infrared irradiator passes through the region P (inside the dotted line) through which the original filament 1 passes, reaches the mirror 22, becomes the infrared light beam 21 b reflected by the mirror 22, and is reflected by the mirror 23. Thus, an infrared light beam 21c is obtained. The infrared light beam 21c passes through the region P and irradiates the original filament 120 degrees after the irradiation position of the first original filament. The infrared light beam 21c having passed through the region P is reflected by the mirror 24 to become an infrared light beam 21d, and reflected by the mirror 25 to become an infrared light beam 21e. The infrared light beam 21e passes through the region P and irradiates the original filament 1 after 120 degrees opposite to the infrared light beam 21c at the irradiation position of the first original filament. Thus, the original filament 1 can be heated uniformly from a symmetrical position by 120 degrees by the three infrared light beams 21a, 21c, and 21e. As described above, it is important that the original filament 1 can be irradiated with the infrared light beam 21 from the symmetrical position. If it is asymmetric, it is difficult to obtain a filament having good physical properties without uniform heating.

  FIG. 3 is a plan view showing an example of using a plurality of light sources as another example of means for irradiating the original filament from a plurality of locations with the infrared light beam employed in the present invention. The infrared light flux 27 a emitted from the infrared radiation device is emitted to the original filament 1. Further, an infrared light beam 27 b emitted from another infrared radiation device is also emitted to the original filament 1. Further, an infrared light beam 27 c emitted from another infrared radiation device is also emitted to the original filament 1. Thus, the radiation from a plurality of light sources can be made into a high-power light source by using a plurality of stable and low-cost laser transmitters with a relatively small-scale light source. Although the figure shows a case where there are three light sources, two light sources or four or more light sources can be used. In particular, in the multiple stretching, such stretching with a plurality of light sources is particularly effective.

FIG. 4 shows an example of a functional original filament used in the present invention. Fig. A shows an example of a core-sheath type composite filament, and Fig. B shows an example of a cider-by-side type filament. FIG. C is an example of a hollow filament, and FIG. D is an example of another form of hollow filament. FIG. E shows an example of a split filament made of a hollow filament, which is divided into a hatched portion and a portion not a hatched portion by drawing and subsequent processes. FIG. F is an example of a peelable split filament. FIG. G is an example of a sea-island filament. FIG. H shows an example of a filament having a triangular cross-section with a notch that generates a silk shear sound as an example of the irregular cross-section filament. These have anisotropy in shape and heat transfer, and uniform heating from various directions is required.

Using a composite filament (filament diameter of 154 μm) whose core is polypropylene and whose sheath is polyethylene as the original filament, stretching was performed using the apparatus of FIG. The laser was manufactured by Onizuka Glass Co., Ltd., and a carbon dioxide laser oscillator stretching ratio of 10 W at maximum was used. At this time, the beam diameter was 4 mm and the power density was 23.7 W / cm 2. In this state, the draw ratio is set to 11 times and the original filament is drawn, and the power density is gradually reduced at that ratio. Then, in each stretched state, the eccentricity of the core sheath, the presence or absence of peeling of the sheath portion, the strength of the obtained filament, the elastic modulus, etc. are measured. When the power density was 6.4 W / cm @ 2, those physical properties could be most balanced.

  These stretched filaments having high physical properties are used not only in the clothing field but also in a wide field such as industrial materials.

The process conceptual diagram of the continuous method for manufacturing the stretched filament which improved the physical property at the high magnification of this invention. The example of arrangement | positioning of the mirror for irradiating the infrared rays light beam to the original filament of this invention from several places is shown, A figure is shown with a top view and B figure is shown with a side view. This is another example of irradiating the original filament of the present invention with infrared rays from a plurality of locations, and shows a plan view in the case of having a plurality of light sources. The conceptual diagram which shows the example of various types of the functional filament of this invention.

Explanation of symbols

1: Original filament, 5: Laser oscillator device, 6: Laser beam,
11: reel, 12: comb, 13a, 13b: feeding nip roll,
15: Guide tool, 16a, 16b: Take-up nip roll,
17: drawn filament 18: birefringence measuring device
19: Take-up reel,
21a, 21b, 21c, 21d, 21e: infrared luminous flux,
22, 23, 24, 25: mirror, P: region.
27a, 27b, 27c: infrared light flux, Q: region.

Claims (13)

A step in which the original filament is sent out by the filament sending means;
A step of heating the sent-out original filament with infrared rays from a plurality of locations;
A step of drawing the heated filament by a take-up device at a constant ratio of 5 times or more;
Measuring the physical properties of the stretched filament to reduce the output of the infrared luminous flux so that the physical properties are most suitable;
A method for producing filaments having high physical properties with high magnification.   A method for producing a filament having high physical properties and high magnification, wherein the original filament of claim 1 is a multifilament.   A method for producing a high-magnification filament having high physical properties, wherein the original filament of claim 1 is a functional filament.   A method for producing a filament with high magnification and high physical properties, wherein the original filament of claim 1 is a high elastic modulus filament.   The method for producing a filament with high magnification and high physical properties, wherein the heating by the infrared light beams from the plurality of locations in claim 1 is heating from a direction symmetrical to the traveling axis of the filament.   The method for producing a filament having high magnification and high physical properties, wherein the drawn filament is heat-treated by a heating device after the drawing in claim 1.   The manufacturing method of the nonwoven fabric which consists of a continuous filament by the said extending | stretching filament optimized in Claim 1 being integrated | stacked on a conveyor. A means for delivering the original filament;
An infrared radiation device configured to heat the original filament that has been sent out by infrared light beams from a plurality of locations;
A take-up device for taking up the heated filament so as to be drawn at a constant ratio of 5 times or more;
An apparatus for measuring physical properties of the drawn filament;
A control device for controlling the output of the infrared luminous flux so that the physical properties of the drawn filament are most suitable;
Manufacturing equipment for filaments with high physical properties and high magnification.   The apparatus for producing a filament with high magnification and high physical properties, wherein the infrared radiation device according to claim 8 is a carbon dioxide laser oscillation device.   The radiation of the infrared light flux from a plurality of locations according to claim 8 is obtained by reflecting the light flux emitted from one direction using a mirror and collecting it on the original filament. Manufacturing equipment.   The apparatus for manufacturing a filament with high magnification and high physical properties, wherein the radiation from the plurality of locations of the infrared light fluxes according to claim 8 is a light flux from a plurality of infrared light flux radiation devices.   The drawing apparatus according to claim 8, further comprising a heat treatment device, wherein the filament drawn under optimum conditions is heat treated by passing through the heat treatment device, and has high physical properties at a high magnification. Filament manufacturing equipment. The said filament manufacturing apparatus in Claim 8 is further equipped with a conveyor, The manufacturing apparatus of the nonwoven fabric which consists of a continuous filament comprised so that the said filament extended | stretched on optimal conditions might be integrated | stacked on this conveyor.

Images