KR100525061B1 - A reflective filament yarn and its manufacturing method - Google Patents

Abstract

The present invention relates to a retroreflective synthetic fiber filament yarn and a method for manufacturing the same, more specifically, a spherical particle having a particle size of 30 to 50 μm, a refractive index of 1.5 to 2.2, and a 1/4 to 1/2 of the total surface area. Reflective synthetic fiber filament yarn and a method of manufacturing the reflective synthetic fiber filament yarn containing 5 to 25% by weight of glass beads vacuum-deposited with a metallic material having a reflective function uniformly, the metallic material having the reflective function It relates to a retroreflective synthetic fiber filament yarn and a method of manufacturing the same, characterized in that the deposition surface of the glass bead vacuum deposition is aligned in a predetermined direction.

The reflective synthetic fiber filament yarn according to the present invention can achieve an omnidirectional reflection by expressing the retroreflective effect and egg reflection at the same time between the fibers, the texture is good, weaving into the fabric is significantly improved workability, and the embroidery yarn It can be applied to machine embroidery, computer embroidery and sewing, and it is easy to wash, excellent washing fastness and function does not change after washing, and it can be applied to various fields and mass production for industrialization is possible. have.

Description

Retroreflective synthetic fiber filament yarn and its manufacturing method {A reflective filament yarn and its manufacturing method}

The present invention relates to a reflective fiber yarn and a method of manufacturing the same, more specifically, the spherical particle size is 30 ~ 50㎛, the refractive index is 1.5 to 2.2 sphere, the area of 1/4 ~ 1/2 of the total surface area is reflected Reflective synthetic fiber filament yarn containing 5 to 25% by weight of glass beads in which vacuum is deposited by a metal material having a function, and a method of manufacturing the same; and glass beads 5 ~ by vacuum deposition of a reflective film by a metal material having the reflective function In the reflective synthetic fiber filament yarn containing 25% by weight uniformly, the retroreflective synthetic fiber filament yarn and its manufacture, characterized in that the reflective film of the glass bead vacuum-deposited with a metal material having the reflective function is aligned in a predetermined direction It is about a method.

In general, reflective materials having a reflective function are widely used in safety-related products for the prevention and safety from various accidents at night, and their demand is also increasing rapidly. For example, when traffic police officers or environmental sanitation workers work or work at night, or when senior citizens or children are exposed to cars or other vehicles at night, drivers may not be able to identify the cause of various accidents as well as personnel accidents. It is also widely used in various traffic signs, various sportswear, personal items such as sports equipment and bags, military identification marks, and the like.

Currently, many kinds of light reflecting materials are known, and research on materials with high reflectance is ongoing. Among them, a film or sheet-shaped reflective material has been put into practical use and used for various purposes. However, the fiber yarn (thread) reflective material has not been commercialized yet, and the application to a thread or a woven fabric is hardly achieved.

It is common to manufacture and use a reflective material having a film or sheet shape as shown in FIGS. 1 and 2 as a conventional reflective fiber, but these are films or sheets rather than fibers, or a degree of slitting these films or sheets. Was. That is, as shown in FIG. 1, although the reflective sheet having the aluminum paste coating layer 70 formed on the one surface of the thin synthetic resin sheet 60 as a reflective film is manufactured and used, since the diffuse reflection is made through the reflective film, the actual reflectance is achieved. This weakness and weak reflection luminance not only have a problem in that there is a limit in actual application, but also have a disadvantage in that the aluminum paste coating layer 70 is easily separated or damaged so that the reflection efficiency is rapidly reduced and the washing fastness is low.

Also, as shown in FIG. 2, an aluminum paste coating layer 70 is formed on one surface of the thin synthetic resin sheet 60 as a reflective film, and the reflective sheet coated with the glass bead 40 by mixing with a transparent polyurethane or the like is also used. However, this has the effect of reflex reflection and good reflection efficiency, but the material of the synthetic resin sheet 60 has only a hard material such as polyethylene terephthalate or polyvinyl chloride. It is not good, the processability is lowered, the wash fastness is low, and there is a disadvantage that it is difficult to be applied to the use of embroidery.

In addition, although the synthetic resin fabric is used instead of the synthetic resin sheet 60, this also has good reflection efficiency, but due to problems such as deterioration in texture and processability, inapplicability to other uses, low fastness to washing, etc., it is difficult to apply it in practice. .

As such, there is a reflective woven fabric disclosed in U.S. Patent No. 4,187,332, which is a reflective woven fabric made by applying reflective glass beads to a woven fabric and drying it.

In another conventional reflective fiber, an aluminum paste coating layer is formed on one surface of a thin synthetic resin film or sheet as a reflective film, and glass beads are mixed with a transparent polyurethane or adhesive to prepare a reflective film or sheet. Next, the film or sheet is slitted to have a width of 0.25 to 0.37 mm and a thickness of 3 to 5 mm to be used as it is, or it is used as it is, or it is spliced or twisted with a conventional synthetic fiber and slit. thread). However, this is also weak due to the tensile strength is easily broken, even when used by weaving or twisting, the tensile strength is improved, but the texture does not reach the fiber, the problem that the aluminum paste coating layer or glass bead is easily separated or damaged still remain, if separated by material Since it does not belong to the textile fabric area because it is a tape or plate, it was not a fiber as a whole.

As such an example, there is US Patent No. 4,336,092. This discloses laminating a retroreflective agent in the form of a thin film on a polyester film, and then cutting it into a thin strip to combine with other fibers to create a retroreflective yarn. In addition, US Patent No. 4,546,042 discloses that the sheet coated with the retroreflective agent is thinly cut to make a thread.

Accordingly, there has been a demand for the emergence of fiber yarns such as filament yarns that have excellent reflection function and have no limit in function as fiber yarns, rather than slitting the film or sheet.

For this reason, it has been suggested to produce a retroreflective yarn through compound spinning as in Korean Patent Registration No. 10-355011. It comprises a mixture of retroreflective material that is glass beads or mica and a first polymer material capable of spinning; And a retroreflective filament prepared by complex spinning the second polymer material capable of spinning in a volume ratio of 5 to 95:95 to 5. However, the retroreflective filament manufactured in this manner is complicated in the manufacturing process, and with the current technology, it is possible to make a yarn having a thickness as large as a fishing line, and thus, as a yarn such as embroidery, sewing, weaving, and knitting. It was somewhat unreasonable to use.

Accordingly, the present invention is to solve the problem of the reflective material used for the conventional fiber, the particle size is 30 ~ 50㎛, a spherical refractive index of 1.5 to 2.2, the area of 1/4 ~ 1/2 of the total surface area is reflected Reflective synthetic fiber filament yarn containing 5 to 25% by weight of glass beads in which vacuum is deposited by a metallic material having a function uniformly and a method of manufacturing the same; and Glass beads 5 in which a reflective film is vacuum deposited by a metallic material having the reflective function In the reflective synthetic fiber filament yarn uniformly containing ~ 25% by weight, the retroreflective synthetic fiber filament yarn, characterized in that the reflective film of the glass bead vacuum-deposited with the reflective metal material is aligned in a predetermined direction It is to provide a manufacturing method.

The object of the present invention is a glass bead having a particle size of 30 ~ 50㎛, a spherical refractive index of 1.5 to 2.2 spheres, 1/4 ~ 1/2 of the total surface area is a metal material having a reflective function vacuum-deposited glass film 5 to 25% by weight of the synthetic resin capable of forming fibers and uniformly melt melt spinning according to a known melt spinning method to produce filament yarns, or 5 to 25% by weight of the glass beads and synthetic resin capable of forming fibers uniformly In the method of manufacturing the filament yarn by mixing the melt spinning by melt spinning method, before the melt spinning filament solidifies, the glass bead contained in the filament is rotated, the reflective film of a metallic material having a reflecting function is aligned in one direction This can be achieved by passing the electric field as much as possible.

The retroreflective synthetic fiber filament yarn according to the present invention is a synthetic fiber filament yarn containing glass beads, wherein the area of 1/4 to 1/2 of the total surface area is vacuum-deposited glass bead with a metallic material having a reflective function. It is characterized by containing 25% by weight.

In addition, the present invention is a reflective synthetic fiber filament yarn containing 5 to 25% by weight of the glass bead vacuum deposited with a metal material having a reflective function of 1/4 ~ 1/2 of the total surface area, the reflective function It includes a retro-reflective synthetic fiber filament yarn, characterized in that the deposition surface of the glass bead vacuum deposited with a metal material is aligned in a predetermined direction.

The method of manufacturing the retroreflective synthetic fiber filament yarn according to the present invention is a metal material having a reflecting function on the surface of spherical glass beads having a particle size of 30 to 50 μm and a refractive index of 1.5 to 2.2 1/4 of the total surface area. After forming the deposition surface so that the area of ~ 1/2 is vacuum deposited, it is uniformly mixed with a synthetic resin capable of forming fibers (hereinafter referred to as "synthetic resin") and melt-spun according to a known melt spinning method to filament yarn Or by uniformly mixing the glass beads and the synthetic resin and melt spinning according to a melt spinning method to produce a filament yarn, wherein the filament yarn contained in the filament yarn is passed through an electric field before the melt spinning filament yarn is solidified. The deposition surface of the glass bead is characterized in that the alignment in one direction.

The retroreflective synthetic fiber filament yarn according to the present invention has a structure as shown in FIGS. 3 to 5 in which the glass beads 20 vacuum-deposited with the reflective metal material are uniformly distributed on the filament yarns 10, or The vapor deposition surface 22 of the glass bead 20 vacuum-deposited with a metallic material having a reflective function has a structure as shown in FIG. 6 aligned in one direction.

In particular, the retroreflective filament yarn 10 shown in FIG. 6, in which the deposition surface 22 of the glass bead is aligned in one direction, has the majority of the glass beads 20 with the deposition surface 22 perpendicular to the axial direction. It is a characteristic configuration that it is aligned only in one direction. Accordingly, when the beam-shaped light is emitted in one direction, such as a headlight of an automobile, all glass beads 20 reflect the light in the same direction. There is.

Glass beads used in the present invention are preferably spherical. Metallized glass beads (20), in which a part of the surface is vacuum-deposited by a metallic material having a reflective function, must be spherical to be retroreflected and contained in various directions or in one direction in a chamber in which the deposition surface is manufactured. As a result, diffuse reflection or retroreflection is expressed, which is effective for overall reflection.

It is preferable that the particle size of the glass beads 20 and 40 is 30 to 50 μm, and when the particle size is less than 30 μm, the reflex reflection and omnidirectional reflection effects are excellent, and the degree of compatibility with the synthetic resin is not so severe that the synthetic resin Although it is easy to mix with and dispersibility and lubricity is not greatly reduced, but it is not easy to manufacture glass beads to have a low particle size while maintaining a spherical shape, there is a disadvantage that is not economical, the particle size is 50㎛ If it exceeds, the thickness of the yarn to be produced is not only too large, but the degree of compatibility with the synthetic resin is so severe that the mixing with the synthetic resin is not easy and the dispersibility and lubricity are greatly reduced, making it difficult to form fibers. There are disadvantages.

In addition, the glass bead is not particularly limited, but preferably has a refractive index of 1.5 to 2.2, which proceeds into the glass bead 30 after the irradiated light is refracted by the synthetic resin 30, and the reflective film deposition surface 22 This is because it is preferable to select the glass bead 20 having an optimal refractive index according to the refractive index of the synthesizing resin 30 because it proceeds through the synthesizing resin 30 again after being reflected. The glass beads 20 satisfying such conditions had an amount of about 10 to 15% of TiO 2 (titanium dioxide) and BaO (barium oxide) and about 85 to 90% of SiO 2 (silicon oxide). . However, it is not limited thereto.

In the present invention, the glass bead is formed using a deposition surface 22 formed by vacuum depositing a portion of the surface with a metallic material having a reflective function. As the metal material having the reflective function, a high purity metal material such as titanium, chromium, silver or aluminum can be used, but in consideration of reflection efficiency, specific gravity, ease of deposition, deposition power, in particular, conductivity and economy, Is most preferred.

The deposition surface vacuum-deposited with the metal material having the reflective function serves as a reflective film for the retroreflective function of the incident light. Therefore, in the present invention, the "reflective film" means a "deposition surface" in which spherical glass beads are vacuum-deposited with a metallic material having an area of 1/4 to 1/2 of the total surface area. In general, when using only glass beads on which no reflective metallic material is deposited, the reflectance is only about 10 to 20 candela / lux square meters (cd / lx · m²). The reflectance in the case of formation is about 450-600 candela / lux * m <2>, and it is known that it shows a reflectance of 500-550 candela / lux * m <2> on average.

The method of forming the reflective film on the glass bead surface with the metal material having the reflective function is vacuum deposition, ion plating, sputtering, vapor deposition, evaporation, ion-beam deposition, molecular beam epitaxy. Various known vacuum metallization methods such as Molecular Beam Epitaxy, Activation Reaction Deposition (ARE), etc. can be used, and those skilled in the art of vacuum deposition can easily deposit metal on the surface of glass beads. A reflective film can be formed. As an example of a method for forming a reflective film, which is an aluminum deposited surface on glass beads, 2 to 25 μm of polyethylene is coated on a polyethylene telephthalate (PET) sheet, and 2 to 5 g / m 2 is applied with a silane silicon coating agent. To disperse the glass beads uniformly in a plane thereon, use a vibrator and disperse the glass beads 3/4 to 1/2 using a heat roller, etc. It can deposit by a vapor deposition method. The deposition surface constitutes an aluminum deposition portion that reflects incident light.

In manufacturing the glass bead 20 in which the reflective film is formed, it is preferable that the deposition surface 22 serving as the reflection film has an area of 1/4 to 1/2 of the total surface area of the glass bead, and the deposition surface 22 is If the glass bead is less than 1/4 of the total surface area, the amount of light reflected back is small and reflectance is not only deteriorated. In addition, diffuse reflection occurs mainly. Therefore, a large amount of glass bead must be added to obtain an appropriate reflectance. Problem occurs, the texture of the yarn is also degraded, there is a disadvantage that is not economical, if it exceeds 1/2, the reflective film is not easy to deposit, and also the amount of light reflected back is less reflectance is reduced Of course, the cost of the reflective film is expensive, there is a disadvantage that is not economical.

The amount of the glass bead 20 on which the reflective film is deposited is effective to use 5 to 25% by weight. When the amount is less than 5% by weight, the reflection effect to be obtained in the present invention is not satisfactory. If it exceeds the%, the synergistic effect of the excess content is negligible.

Synthetic resin that can be used in the present invention can be used without particular limitation synthetic resins that can form fibers such as polyester, polyamide (nylon), vinylon, acrylic, polyolefin, vinyl chloride, vinylidene chloride, urethane.

The reflective film-deposited glass beads 20 and the non-reflective film-deposited glass beads 40 used in the present invention do not have good compatibility with the synthetic resin 30, resulting in poor dispersibility during melt spinning as a fiber, and lack of flexibility. Since the application is not easy, the present invention uses a dispersing agent and a softening agent. That is, since the specific gravity of the reflective film-deposited glass beads 20 is about 3 to 5 times higher than that of the synthetic resin 30 to be used as about 4.2, for the purpose of providing flexibility during uniform mixing and spinning thereof and improving the flexibility of the yarn to be manufactured. 0.5 wt% softener is used, and 0.2 to 0.5 wt% dispersant is used to assist the mixing of the reflective film deposition glass beads 20 and the synthetic resin 30 having the fiber forming function to be evenly mixed in the extruder. do.

Softeners and dispersants may be used both softeners and dispersants commonly used in the art, but it was most effective to use dioctylphthalate (DOP) as a softener and Ca lubricant as a dispersant. If the amount of use exceeds the above range, the desired effect is weak or the synergistic effect of the addition is not economical, and the physical properties of the manufactured yarn are lowered.

In addition, in the present invention, 0.2 to 0.5% by weight of various functional enhancers, such as a sunscreen agent, an antistatic agent, an air freshener, a deodorant, a deodorant, etc., to improve various required physical properties of the yarn, may be added to prevent the degradation of physical properties and economical efficiency. It can be improved.

In the present invention, even if only the glass bead 20 on which the metal reflective film is deposited can be used to obtain the desired reflective effect, in order to further improve the reflective effect, the non-reflective film undeposited glass bead 40 and / or pearl particles 50 1 or a mixture thereof may be added to the reflective film-deposited glass beads 20 and used. The reflective film undeposited glass beads 40 are preferably the same as the glass beads used for the reflective film deposited glass beads 20. When the non-reflective film bead glass beads 40 are added, light refraction occurs through the non-reflective film bead glass beads 40, and the refracted light is incident on the non-reflective film undeposited surface 21 of the reflective film bead glass beads 20. Retroreflection is caused by the reflective film deposition surface 22 to increase the reflection effect in the fabric produced. On the other hand, the pearl particles that can be used in the present invention is a pearl particle 50 of 30 ~ 50㎛, when the pearl particles are added may exhibit the effect of the reflector. The pearl particle 50 has a disadvantage in that the reflection brightness is lower than that of the reflective film deposition glass beads 20, but it is used in addition to the reflective film deposition glass beads 20 to be used in combination with the coloring pigments in addition to the reflection effect and various colorants. This can be used for other purposes. For example, red, yellow, blue, black, white and other combinations of colors are represented on the back as it is particularly suitable for use in clothing, bags, shoes and the like. It is preferable that the total amount of the glass beads 20 and the non-reflective glass beads 40 and / or pearl particles 50 on which the reflective film is deposited may be used in the present invention, not to exceed 35% by weight. When the total amount of use exceeds 35% by weight, the physical properties of the synthetic resin 30 are greatly different, so that it is not easy to form a fiber, and the thread is not easily formed. The problem may occur that the physical properties of the yarn, such as the tensile strength of the remarkably decreases. Metal undeposited glass beads (40), in which a reflective film is not formed, are also used as spherical as possible for the reflection.

The following describes a method of manufacturing the retroreflective synthetic fiber filament yarn containing the glass beads 20 as described above.

The omnidirectional reflective fiber yarn having a structure as shown in FIG. 3 in which the glass beads 20 are uniformly distributed on the synthetic fiber filament yarn 10 has a particle size of 30 to 50 μm and a refractive index of 1.5 to 2.2. The area of 1/4 to 1/2 of the total surface area can be prepared by melt spinning 5-25 wt% of the glass beads vacuum-deposited with a metal material having a reflecting function with a synthetic resin by a conventional known method.

The retroreflective synthetic fiber filament yarn of the present invention shown in FIG. 6 in which the reflective film 22 of the glass bead is aligned in one direction is vacuumed with a metallic material having a reflection function contained in the filament yarn before the filament yarn solidifies during melt spinning. It can be produced by passing an electric field so that the reflective film of the deposited glass beads is rotated and aligned in one direction.

In order to align the reflective film of the glass bead in one direction, as shown in FIG. 7, the glass bead and the synthetic resin are melted and spun through the spinning nozzle 11 at the end of the nozzle 11. It can be obtained by installing the negative electrode plate 12 and the positive electrode plate 13 facing each other around the unsolidified filament yarn 10 to connect a DC power source to form an electric field around. When the electric field is connected to the power source, free electrons in the metal material of the metal deposition surface 22 deposited on the glass bead 20 are attracted to the positive electrode plate 13, and polarization phenomenon occurs in the glass bead 20. This results in the glass bead 20 acquiring an induced dipole monent.

The induction dipole moment has a force to align in the positive (long) direction in the external electric field, and when a mixture of the synthetic resin 30 and the glass bead 20 in the liquid state is injected through the spinning nozzle 11 Since the filament yarn 10 near the nozzle 11 is in a liquid state, the glass beads 20 are sufficiently rotated and aligned in the same direction. In order to generate the induction dipole moment as described above, it is preferable to apply a high voltage of DC 3000 volts to 20000 volts and a low current of 3 mA to 5 mA, and at this time, the distance between the negative electrode plate 12 and the positive electrode plate 13 is 1 mm to 5 mm. It is preferable to arrange | position to an extent.

8 is a plan view of the end of the spinning nozzle 11 for spinning the retroreflective filament yarn 10 according to an embodiment of the present invention, a plurality of nozzle holes are formed in one row or two rows. The arrangement of the nozzle holes in one row or two rows as described above allows the filament yarns 10 radiated from each nozzle hole to pass through the same space between the positive electrode plate 13 and the negative electrode plate 12 constituting the electric field at equal intervals. This is to ensure that the glass beads 20 in the interior are all affected by the electric field.

9 shows a retroreflective filament yarn according to an embodiment of the present invention, showing that eighteen filaments 10 constitute one filament yarn. As can be seen from the cross-sectional view taken along the line A-A ', the glass beads 20 contained in each filament 10 are not all aligned in a direction effective for retroreflective reflection (radial view relative to the entire filament yarn). It can be seen that the filaments 10 aligned in the effective direction can all function as the glass bead 20 contained therein.

As described above, the filament yarn of the present invention, in which the deposition surface 22 of the glass bead is aligned in one direction, becomes a retroreflective fiber, and when the filament yarn of the present invention is spliced, the light retroreflected from each filament yarn of the present invention It is reflected back again on other filament yarns, so that the omnidirectional reflection effect is expressed.

The following examples illustrate the invention in more detail, but do not limit the scope of the invention.

Example 1

In order to manufacture a polypropylene (PP) yarn having an omni-directional reflection function, first, a vacuum film of a reflective film was deposited on aluminum by about one third of the surface of glass beads having an average particle size of about 40 μm and a particle size distribution of 30 to 50 μm. After obtaining glass beads, separately put 85% by weight of polypropylene resin into the stirrer, add 0.5% by weight of dioctyl phthalate to the polypropylene resin, and rotate it for about 30 minutes with a rotational force of about 100rpm to form a thin oil film on the surface of the polypropylene resin. After forming, 15 wt% of the glass beads on which the reflective film was deposited was added and rotated at the same speed for about 30 minutes, and the reflective film deposition glass beads were evenly distributed on the surface of the polypropylene resin using the oil component of the oil film formed on the resin surface. To be intact.

This process can replace the method of melt spinning using the existing master batch, and because it does not need to manufacture the master batch, it is not only low processing cost but may also occur when extrusion to make the master batch By preventing the deterioration of the resin present, it is possible to obtain a yarn with more transparency.

Put the pre-processed reflective film deposition glass bead and polypropylene resin mixture in the extruder in the same manner as described above and melt spinning at a temperature of 210 ℃, 430 denier / 18 filament at a flux of about 600 ~ 800m / min After the undrawn yarn of the filament was obtained, it was stretched 2.3 times using a drawing machine to obtain a 180 denier drawn yarn having a strength of 3 g / denier.

Example 2

In order to manufacture the polyester yarn having the omnidirectional reflection function, the polyethylenephthalate resin having an intrinsic viscosity of 0.77 and the reflective film-deposited glass beads used in Example 1 were put in each drying furnace, and dried for about 10 hours to obtain a moisture content of 25 ppm or less. After drying as completely as possible, the dried polyethylene terephthalate resin was discharged from the extruder at a temperature of 285 ° C., and the dried reflective film-deposited glass beads were uniformly charged by 15% by weight through a side feeder and the yarn speed was 600 to 800 m / min. To that extent, an undrawn yarn of 450 denier / 18 filaments was obtained, and then drawn by 2.1 times using a drawing machine to obtain a 200 denier drawn yarn having a strength of 3.0 g / denier.

Example 3

In order to manufacture the polyester yarn having the omnidirectional reflection function, the polyethylenephthalate resin having an intrinsic viscosity of 0.77 and the reflective film-deposited glass beads used in Example 1 were put in each drying furnace, and dried for about 10 hours to obtain a moisture content of 25 ppm or less. After drying as much as possible, the dried polyethylene terephthalate resin was discharged from the extruder at a temperature of 285 ° C., and the dried reflective film-deposited glass beads were uniformly charged by a side feeder at 15% by weight, followed by two pairs of hot Godet rollers. (pair hot godet roller) was stretched while drawing a draw ratio of 2.1 times directly to obtain a 200 denier drawn yarn of strength 3.0g / denier.

Example 4

In order to manufacture a polyamide (nylon) yarn having an omni-directional reflection function, 15 weights of dried reflective film-deposited glass beads through a side feeder were discharged from an extruder at a temperature of 265 ° C. in a nylon chip having a relative viscosity of 2.4. % Uniformly charged to obtain a polyamide yarn of 180 denier / 18 filaments.

[Examples 5 to 8]

In Examples 1 to 4, synthetic fiber filament yarn was obtained in the same manner as in Examples 1 to 4, except that 5 wt% of the non-reflective film undeposited glass beads were added.

The synthetic fiber filament yarns were found to increase the reflection effect of light, and thus the degree of reflection effect of light can be controlled by changing the amount of reflective film deposition and / or undeposited glass beads used according to the user's request. It can be seen that it can produce a variety of products according to.

Example 9

The unstretched yarn melt-spun by the same method as described in Example 1 was cut while drawing through a drawing machine to obtain a staple fiber cut into mono denier 7, 52 mm long.

Next, the staple fiber having the reflection function obtained above was heat-treated with a calender roll at 145 ° C to obtain a 0.13 mm thick nonwoven fabric.

In addition, the non-woven fabric was obtained by using a thermal fusion method, which is a conventional fiber manufacturing method using the staple fiber obtained above, such a non-woven fabric is convenient to use to replace the rigid reflective fabric of the PET system and has good processability.

Such a nonwoven fabric is safer as it has a very soft fiber function compared to a conventional PET sheet (one surface of which is coated with aluminum reflector and the other side of which glass beads are applied to have retroreflective function) or PVC sheet. It can be seen that there is an advantage that it is easy to process clothing and safety marks, and the application field is greatly expanded.

[Examples 10 to 18]

Examples 1 to 9 except that the non-reflective film glass beads and pearl particles were uniformly mixed at a weight ratio of 70:30, and then uniformly added at a rate of 2% by weight through a side feeder together with a yellow pigment master chip. In the same manner as in the yellow and pearl-colored mixed dyeing fiber filament yarn was obtained.

Example 19

To produce polypropylene (PP) yarn having a retroreflective function, first, about one third of the surface of glass beads having an average particle size of about 40 μm, a spherical refractive index of 1.5 to 2.2, and a particle size distribution of 30 to 50 μm is used. After obtaining the glass beads by vacuum-depositing the reflective film with aluminum, separately put 85% by weight of polypropylene resin into the stirrer, add 0.5% by weight of dioctylphthalate to the polypropylene resin, and rotate it for about 30 minutes at a rotational force of about 100rpm. After forming a thin oil film on the surface of the propylene resin, 15 wt% of the glass beads on which the reflective film was deposited was added and rotated at the same speed for 30 minutes. It is made to spread | distribute evenly on the resin surface, and to apply | coat.

Put the reflective film deposited glass beads and polypropylene resin mixture pre-processed in the above manner into an extruder and melt spinning at a temperature of 210 ° C. at 600 to 800 m / min, but before spinning the filament to be melt spun An undrawn yarn of 430 denier / 18 filaments was prepared by passing an electric field installed around the nozzle (see FIG. 7).

The unstretched yarn was stretched 2.3 times using a drawing machine to obtain a 180 denier stretched yarn having a strength of 3 g / denier.

Example 20

In order to prepare a polyester (PET) yarn having a retroreflective function, a polyethylene phthalate resin having an intrinsic viscosity of 0.77 and a reflective film-deposited glass bead prepared in Example 19 were put in each drying furnace and dried for about 10 hours so that the moisture content was 25 ppm or less. After drying completely, the dried polyethylene terephthalate resin was discharged from the extruder at a rate of 600 to 800 m / min at a temperature of 285 ° C, and 15 wt% of the dried reflective film-deposited glass beads were uniformly introduced through a side feeder. However, before filament melted and spun through the spinning nozzle was solidified, an undrawn yarn of 450 denier / 18 filaments was prepared by passing an electric field installed around the spinning nozzle. The undrawn yarn was stretched 2.1 times using a drawing machine to obtain a 200 denier drawn yarn having a strength of 3.0 g / denier.

Example 21

In order to prepare a polyester (PET) yarn having a retroreflective function, a polyethylene phthalate resin having an intrinsic viscosity of 0.77 and a reflective film-deposited glass bead prepared in Example 19 were put in each drying furnace and dried for about 10 hours so that the moisture content was 25 ppm or less. After drying completely, the dried polyethylene terephthalate resin was discharged from the extruder at a temperature of 285 ° C., and 15% by weight of the dried reflective film-deposited glass beads were uniformly added through a side feeder, and the filament melt-spun through the spinning nozzle. The filament was manufactured by passing an electric field installed around the spinning nozzle before solidification. The filament was stretched by direct stretching to a draw ratio of 2.1 times with a two-stage pair hot godet roller to obtain a 200 denier drawn yarn having a strength of 3.0 g / denier.

Example 22

Dried reflective film deposited glass prepared in Example 19 through a side feeder while discharging a nylon chip having a relative viscosity of 2.4 from a extruder at a temperature of 265 ° C. to prepare a polyamide (nylon) yarn having a retroreflective function. The beads were added uniformly to 15% by weight, but the polyamide yarn of 180 denier / 18 filaments was obtained by passing an electric field installed around the spinning nozzle before the filament melted and spun through the spinning nozzle was solidified.

As described above, in the present invention, glass beads 5 having a particle size of 30 to 50 μm, a refractive index of 1.5 to 2.2 spheres, and an area of 1/4 to 1/2 of the total surface area are vacuum-deposited with a metallic material having a reflective function In the reflective synthetic fiber filament yarn uniformly contained in the 25 ~ 25% by weight of the retroreflective synthetic fiber filament yarn and 5 to 25% by weight of the glass bead vacuum vacuum deposited with the reflective metal material, the reflective function Retroreflective synthetic fiber filament yarn, characterized in that the vacuum deposition surface of the glass bead vacuum deposition of a metal material having a predetermined direction is aligned between the synthetic fiber filament and at the same time the reflection effect of the conventional {thin surface of the synthetic resin film or sheet An aluminum paste coating layer was formed as a reflective film on the surface, and glass beads were mixed thereon and mixed with a transparent polyurethane or adhesive. After the surface-coated reflective film or sheet is manufactured, the film or sheet is cut into lengths of 0.25 to 0.37 mm in width and 3 to 5 mm in thickness, or it is spun or twisted with ordinary synthetic fiber 지지) It is not inferior to the slit thread}, and because it is between synthetic fiber filaments, the texture is much better than the conventional one, and it is easy to weave into fabric, and it can be applied to embroidery thread. Embroidery, computer embroidery and sewing are possible, and it is easy to wash as well as excellent washing fastness and function does not change even after washing, can be applied to various fields, mass production is possible, and the price is low.

In addition, the following table shows the luminance in EN471 standard of the woven fabric made of filament yarn according to Examples 19 to 22 of the present invention and compares the case where the glass beads are aligned with the case where they are not aligned. Photometry was performed under conditions of an incident angle of 5 ° and an observation angle of 0.2 °.

Example Classification Reflective performance {cd / (lux · ㎡)} Glass Bead Alignment Glass Beads Unaligned Example 19 280 130 Example 20 250 100 Example 21 260 120 Example 22 240 90

As described above, when the glass beads impregnated with the filaments are aligned, the luminance is improved by 100% or more.

1 is a schematic diagram for explaining a concept of reflection in a conventional reflective fiber material,

2 is a schematic diagram illustrating the concept of reflection when applied to a slit thread or fabric in a conventional reflective fiber material,

3 and 4 are schematic diagrams for explaining the concept of reflection in the omnidirectional reflective fiber yarn (synthetic filament) according to the present invention.

It is sectional drawing which showed hollow fiber as a schematic diagram for demonstrating the concept of reflection in the omnidirectional reflective fiber yarn (synthetic filament) which concerns on this invention.

6 is a view showing one filament of the retroreflective filament yarn according to an embodiment of the present invention;

7 is a view showing aligning reflective glass beads impregnated in each filament of the retroreflective filament yarn according to the embodiment of the present invention;

8 is a plan view of an end of a spinning nozzle for spinning a retroreflective filament yarn according to an embodiment of the present invention;

9 is a perspective view and a cross-sectional view taken along line A-A 'showing the retroreflective filament yarn according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

10. Filament 11. Spinning nozzle

12. Negative plate 13. Positive plate

20. Reflective film deposition glass bead 21. Reflective film not deposited

22. Reflective film deposition section 30. Synthetic resin

40. Reflective film undeposited glass beads 50. Pearl particle

60. Synthetic resin sheet 70. Aluminum paste coating layer

Claims (8)

In a reflective synthetic fiber filament yarn manufactured by melting and spinning a mixture of glass beads and a synthetic resin having a vacuum deposition surface with a metal material having a reflective function through a spinning nozzle by melt spinning, during melt spinning through the spinning nozzle A retroreflective synthetic fiber filament yarn, characterized in that the glass beads contained in the filament are rotated so that the deposition surface of the glass beads is aligned in the direction of the electric field by passing an electric field installed around the spinning nozzle before the filament to be solidified. 2. The retroreflective synthetic fiber filament yarn according to claim 1, wherein the glass bead containing 5 to 25% by weight of glass beads having a deposition surface formed of a metallic material having a reflective function is contained. 2. The retroreflective synthetic fiber filament yarn of claim 1, wherein the glass beads have a spherical particle size of 30 µm to 50 µm and a refractive index of 1.5 to 2.2. 2. The retroreflective synthetic fiber filament yarn of claim 1, wherein the reflective metal material is one selected from aluminum, nickel, and silver. A spherical glass bead having a particle size distribution of 30 to 50 μm and a refractive index of 1.5 to 2.2 is formed on a 1/4 to 1/2 area of the surface area with a metal material having a reflective function, and then the deposition surface is 5 to 25% by weight of the formed glass beads and 95 to 75% by weight of the synthetic resin uniformly mixed, melt spinning through a spinning nozzle according to the melt spinning method in the filament manufacturing method, wherein the melt-spun filament is solidified The glass beads contained in the filament yarn is rotated by passing through the electric field so that the deposition surface of the glass beads is aligned in the direction of the electric field, characterized in that the manufacturing method of retroreflective synthetic fiber filament yarn. 6. The electric field of claim 5, wherein the electric field is disposed below the discharge port of the spinning nozzle so as to face the positive electrode plate 13 and the negative electrode plate 12 at a distance of 1 mm to 5 mm. Method for producing a retroreflective synthetic fiber filament yarn, characterized in that the current of ~ 5mA applied. The method of manufacturing a retroreflective synthetic fiber filament yarn according to claim 6, wherein the ejection openings of the spinning nozzle are formed in one row or two rows. According to claim 5 or 6, Dioctyl phthalate (DOP) as a softening agent and Ca as a dispersant in order to impart uniformity to the mixture of the glass bead and synthetic resin and to improve the flexibility of the synthetic fiber filament yarn produced during spinning Method for producing a retroreflective synthetic fiber filament yarn, characterized in that the lubricant is used 0.2 to 0.5% by weight of the mixture, respectively.