Fiber for identifying the authenticity of raw fabric and raw fabric authenticity identification system using the same

Abstract

The present invention relates to a fiber for identifying the authenticity of a greige fabric that exhibits the authenticity identification functionality of the greige fabric by mixing special pigments into the fiber, and an authenticity identification system for the greige fabric using the same. The fiber for identifying the authenticity of the greige fabric containing the infrared emitter of the present invention is contained inside the yarn or the greige fabric and can provide an authenticity identification or forgery prevention effect. For example, in the case of a specific functional product, analysis was complicated and impossible after the greige fabric was manufactured, but rapid and accurate identification is possible with the fiber for identifying the authenticity of the greige fabric of the present invention.

Description

Technical Field

[0001] The present invention relates to a fiber for discriminating the authenticity of a raw fabric and a raw fabric authenticity discrimination system using the same. More specifically, the present invention relates to a fiber for discriminating the authenticity of a raw fabric that exhibits the authenticity discrimination functionality of a raw fabric by mixing a special additive that emits infrared rays into the fiber, and a raw fabric authenticity discrimination system using the same.

Background Art

[0002] Security fibers for preventing forgery or discriminating the authenticity of securities, high - value - added products, etc. are known. Such security fibers are produced by including special substances in the fibers, or by dyeing or coating the fibers, and are sensitive to the wavelength of the electromagnetic field or thermal conditions to emit light, change color, fluoresce, and phosphoresce, or exhibit partial characteristics.

[0003] Patent Document 1 discloses a technique for imparting a function of preventing forgery and alteration by using a fluorescent substance that emits light when there is an external stimulus, a phosphorescent substance that has a different emission wavelength from the fluorescent substance and emits light after the external stimulus is removed, and a fluorescent synthetic resin containing a thermoplastic resin or a thermosetting resin.

[0004] However, it has a problem that the forgery prevention function is somewhat insufficient.

[0005] Patent Document 2 discloses a method for manufacturing a security fiber containing a fluorescent substance excited by infrared rays, visible light, or ultraviolet rays. However, such a security fiber has a limitation that special equipment must be used to determine whether it can be forged or altered.

[0006] Domestic recycled yarn has no characteristics compared to general yarn and imported recycled yarn. However, when a clothing manufacturing company wants to use domestic recycled yarn and purchases a raw fabric from a raw fabric manufacturing company, if the raw fabric is manufactured from general yarn by the raw fabric manufacturing company, it is difficult to distinguish the authenticity of the corresponding product.

[0007] There has been technology related to security fibers for preventing forgery of conventional securities, high - value - added products, etc., but in the fiber field, there is no technology for identifying the authenticity of yarns or greige goods.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0009] The present invention is for solving the above - mentioned problems of the prior art. One object of the present invention is to provide a fiber for identifying the authenticity of greige goods that can identify the authenticity of yarns or greige goods.

[0010] Another object of the present invention is to provide a method for manufacturing the fiber for identifying the authenticity of greige goods.

[0011] Another object of the present invention is to provide an authenticity identification system for greige goods that uses the fiber for identifying the authenticity of greige goods.

Means for Solving the Problems

[0012] One aspect of the present invention for achieving the above - mentioned object is a fiber made of a fiber - forming polymer, containing 50 - 1000 ppm of a phosphor represented by any one of the following Chemical Formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm, and an emission wavelength of 800 nm to 2500 nm, related to a fiber for identifying the authenticity of greige goods. (Chemical Formula 1) Y X V Y O3:Sb (wherein 0 < X ≦ 1, 0 < Y ≦ 1); (Chemical Formula 2) YbYX V Y Si2O7:M (where 0 < X ≤ 1, 0.01 < Y ≤ 1, M is Nd 3+ or Er 3+ ); (Formula 3) Yb 2-x Y y V Z Si2O7:M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, M is Nd 3+ or Er 3+ ); (Formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

[0013] The color L value of the phosphor is preferably 50 or more, and the fineness of the fiber is in the range of 1 to 4 deniers.

[0014] The fiber-forming polymer is selected from the group consisting of polyester-based, acrylic-based, polyamide-based, polyvinyl alcohol-based, acetate-based, polypropylene-based, polyolefin-based, polycarbonate-based, and cellulose-based.

[0015] The polyester-based fiber-forming polymer is one or more selected from the group consisting of polyethylene terephthalate homopolymer, polyethylene terephthalate copolymer, polybutylene terephthalate, polycyclohexylene cyclohexanedicarboxylate, polycyclohexylene terephthalate, and polytrimethylene terephthalate.

[0016] Another aspect of the present invention relates to a method for manufacturing a fiber for discriminating the authenticity of a raw fabric, which comprises introducing a phosphor represented by any one of the following Chemical Formulas 1 to 4 having an average particle size of 0.5 μm or more and less than 5 μm and an emission wavelength of 800 nm to 2500 nm in a polymerization step to produce an infrared light-emitting chip, and then spinning the chip to produce a fiber. (Chemical Formula 1) Y X V Y O3:Sb (where 0 < X ≦ 1, 0 < Y ≦ 1); (Chemical Formula 2) YbY X V Y Si2O7:M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2-x Y y V Z Si2O7:M (where 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≦ 1, 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ).

[0017] Another aspect of the present invention relates to a method for manufacturing a fiber for discriminating the authenticity of a raw fabric, which comprises compounding a phosphor powder represented by any one of the following Chemical Formulas 1 to 4 having an average particle size of 0.5 μm or more and less than 5 μm and an emission wavelength of 800 nm to 2500 nm to produce an infrared light-emitting chip, and then spinning the chip to produce a fiber. (Chemical Formula 1) Y X V Y O3:Sb (where 0 < X ≦ 1, 0 < Y ≦ 1); (Chemical Formula 2) YbY X V Y Si2O7:M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 3) Yb 2-x Y y V Z Si2O7:M (where 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≦ 1, 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ).

[0018] Another aspect of the present invention relates to a method for manufacturing fibers for discriminating the authenticity of raw yarns, which includes the steps of compounding a fiber-forming polymer chip with a phosphor powder represented by any one of the following Chemical formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm and an emission wavelength of 800 nm to 2500 nm, to form a light-emitting masterbatch, and then blending the light-emitting masterbatch with a general chip and spinning them. (Chemical formula 1) Y X V Y O3:Sb (where 0 < X ≦ 1, 0 < Y ≦ 1); (Chemical formula 2) YbY X V Y Si2O7:M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 3) Yb 2-x Y y V Z Si2O7:M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

[0019] Another aspect of the present invention relates to a raw material authenticity discrimination system for a raw material using a fiber for discriminating the authenticity of a raw material of the present invention, including a raw material containing the fiber for discriminating the authenticity of the raw material of the present invention described above, an infrared light source unit that emits infrared rays to the raw material to be discriminated for authenticity, an infrared light receiving unit that receives infrared rays reflected from the raw material to be discriminated for authenticity, and a control unit that controls the infrared light source unit and the infrared light receiving unit and discriminates the authenticity of the raw material to be discriminated for authenticity using the infrared rays received by the infrared light receiving unit.

Advantages of the Invention

[0020] The fiber for discriminating the authenticity of a raw material containing the infrared light emitter of the present invention can be contained inside the raw yarn or the raw material to provide an authenticity discrimination or forgery prevention effect. For example, in the case of a specific functional product, analysis was complicated and impossible after the raw material was manufactured, but the fiber for discriminating the authenticity of the raw material of the present invention enables quick and accurate discrimination.

[0021] In addition, the fiber for discriminating the authenticity of a raw material that emits near-infrared rays of the present invention can provide a remarkable advantage of being excellent in spinning processability and maintaining the physical properties of the raw yarn.

[0022] According to the present invention, it is possible to quickly and easily discriminate whether the raw material required for portable equipment is made of the raw yarn.

Modes for Carrying Out the Invention

[0023] The present invention will be described in more detail below.

[0024] Throughout this specification, when a part "includes" a certain component, this means that, unless otherwise stated to the contrary, it does not exclude other components, but may further include other components.

[0025] One aspect of the present invention relates to a fiber made of a fiber-forming polymer, containing 50 to 1000 ppm of a phosphor represented by any one of the following Chemical Formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm, and an emission wavelength of 800 nm to 2500 nm, for authenticating the authenticity of a roving. (Chemical Formula 1) Y X V Y O3:Sb (In the formula, 0 < X ≦ 1, 0 < Y ≦ 1); (Chemical Formula 2) YbY X V Y Si2O7:M (In the formula, 0 < X ≦ 1, 0.01 < Y ≦ 1, M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2-x Y y V Z Si2O7:M (In the formula, 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Y x V y Si Z O4:M (In the formula, 0 < a ≦ 1, 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ).

[0026] The fiber for discriminating the authenticity of the raw material of the present invention contains an infrared emitter and exhibits infrared fluorescence characteristics, so it can be used as a security yarn, a spun yarn, or a security fiber for preventing forgery of the raw yarn or the raw material.

[0027] In the present invention, the emission wavelength of the emitter is 800 nm to 2500 nm, more preferably 800 nm to 1500 nm. If the emission wavelength of the emitter is less than 800 nm, it is in the visible light region, so the emission color is prominent (fluorescence). If it exceeds 2500 nm, the energy of the wavelength is weak and it may be difficult to detect.

[0028] The average particle size of the emitter used in the present invention is 0.5 μm or more and less than 5 μm, more preferably 0.5 to 3 μm. If the average particle size of the emitter is less than 0.5 μm, the emission intensity may become weak and it may be difficult to discriminate the authenticity of the raw yarn. If the average particle size of the emitter is 5.0 μm or more, the yield may decrease during spinning and it may be difficult to ensure the physical properties of the raw yarn.

[0029] The content of the emitter contained in the fiber for discriminating the authenticity of the raw material of the present invention is 50 to 1000 ppm. If the content of the emitter is less than 50 ppm, the emission intensity is weak and it is difficult to discriminate with the raw yarn. Conversely, if it exceeds 1000 ppm, there is no economic efficiency.

[0030] The emitter of the present invention has a color L value of 50 or more, more preferably a color L value of 70 or more. If the color L value is less than 50, the color of the raw yarn may become dark and the application may be restricted.

[0031] The fineness of the fiber for discriminating the authenticity of the raw material of the present invention is 1 denier to 4 denier. If the fineness of the fiber for discriminating the authenticity of the raw material is less than 1 denier, the spinning processability deteriorates. Conversely, if it exceeds 4 denier, it is not suitable for industrial use.

[0032] The fiber-forming polymer that constitutes the fiber for authenticity identification of the base fabric of the present invention can be one or more selected from the group consisting of polyester-based, acrylic-based, polyamide-based, polyvinyl alcohol-based, acetate-based, polypropylene-based, polyolefin-based, polycarbonate-based, and cellulose-based.

[0033] Specific examples of the polyester-based fiber-forming polymer include, but are not necessarily limited to, polyethylene terephthalate homopolymer, polyethylene terephthalate copolymer, polybutylene terephthalate, polycyclohexylene cyclohexanedicarboxylate, polycyclohexylene terephthalate, and polytrimethylene terephthalate.

[0034] Another aspect of the present invention relates to a method for manufacturing a fiber for authenticity identification of a base fabric containing a light emitter.

[0035] In the method of one aspect of the present invention, in the polymerization step, a light emitter represented by any one of the following Chemical Formulas 1 to 4 having an average particle size of 0.5 μm or more and less than 5 μm and an emission wavelength of 800 nm to 2500 nm is introduced to manufacture an infrared light-emitting chip, and then the chip is used for spinning to manufacture a fiber. (Chemical Formula 1) Y X V Y O3:Sb (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical Formula 2) YbY X V Y Si2O7:M (In the formula, 0 < X ≤ 1, 0.01 < Y ≤ 1, M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2-x Y y V Z Si2O7:M (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Yx V y Si Z O4:M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

[0036] In the present invention, the phosphor can be added in a content of about 50 to 1000 ppm, thoroughly mixed with the fiber-forming resin, and then extruded by an extruder to produce a masterbatch. At this time, the operating conditions of the extruder can be adjusted according to the type of synthetic resin. The synthetic resin discharged through the nozzle of the extruder as described above can be processed into chip form for the spinning process, which is a fiber manufacturing step. The size per chip can be about 5 mm 3 to 15 mm 3 and, more specifically, can be about 8 mm 3 to 12 mm 3 . The manufacturing conditions can be somewhat modified and utilized in the manufacturing process. In the method of the present invention, the spinning process for manufacturing fibers means the process of fiberizing a masterbatch in which a phosphor and a fiber-forming resin are mixed.

[0037] In another embodiment, the fiber for authenticating the authenticity of the raw material of the present invention may be manufactured by compounding a fiber-forming polymer chip and a phosphor powder having an average particle size of 0.5 μm or more and less than 5 μm and a light emission wavelength of 800 nm to 2500 nm, represented by any one of the following Chemical Formulas 1 to 4, to manufacture an infrared light-emitting chip, and spinning the chip to produce fibers. (Chemical Formula 1) Y X V Y O3:Sb (where 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical Formula 2) YbY X V Y Si2O7:M (where 0 < X ≤ 1, 0.01 < Y ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2-x Yy V Z Si2O7:M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ );

[0038] In addition, the method for manufacturing fibers for discriminating the authenticity of other raw fabrics includes the steps of compounding a fiber-forming polymer chip with a phosphor powder represented by any one of the following Chemical formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm and an emission wavelength of 800 nm to 2500 nm, to produce a luminous masterbatch, and then blending the luminous masterbatch with a general chip and spinning. (Chemical formula 1) Y X V Y O3:Sb (where 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical formula 2) YbY X V Y Si2O7:M (where 0 < X ≤ 1, 0.01 < Y ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 3) Yb 2-x Y y V Z Si2O7:M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical formula 4) Yb a Y x V y Si Z O4:M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

[0039] Furthermore, the fiber for discriminating the authenticity of the original fabric of the present invention may further include a step of dyeing or coating the spun fiber. For this purpose, a normal infrared light-emitting phosphor can be added to the outer surface of the fiber by means of a dyeing or coating method.

[0040] Still another aspect of the present invention relates to a raw fabric authenticity discrimination system using the fiber for discriminating the authenticity of the original fabric of the present invention, the raw fabric including the fiber for discriminating the authenticity of the original fabric, an infrared light source unit that emits infrared rays to the raw fabric to be discriminated for authenticity, an infrared light receiving unit that receives infrared rays reflected from the raw fabric to be discriminated for authenticity, and a control unit that controls the infrared light source unit and the infrared light receiving unit and discriminates the authenticity of the raw fabric to be discriminated for authenticity using the infrared rays received by the infrared light receiving unit.

[0041] The infrared light source unit can emit infrared rays at one or more points of the raw yarn or the raw fabric, and the infrared light receiving unit can receive near-infrared rays or infrared rays reflected from the raw yarn or the raw fabric.

[0042] The authenticity discrimination system of the present invention can accurately detect the presence or absence of the phosphor in the raw yarn or the raw fabric sample by irradiating light on the surface of the raw yarn or the raw fabric including the phosphor and detecting the spectrum of a special wavelength emitted from the raw yarn or the raw fabric sample.

[0043] The authenticity discrimination system of the present invention may include a display unit that displays the detection amount, an operation unit that receives input from a user, a communication unit that is connected to the control unit and is responsible for communication between the control unit and an external information processing device, a power supply unit that is connected to the control unit and supplies power, and the like.

[0044] The "~ part" used in this embodiment includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables.

[0045] Hereinafter, the present invention will be described in more detail through embodiments.

[0046] This embodiment is for explaining the present invention in more detail, and the scope of the present invention is not limited to these embodiments.

[0047] Examples Examples 1 to 3 To 100 parts by weight of polyethylene terephthalate resin, 1 part by weight of YVO3:Yb (IRumina 1050S manufactured by Nanocms) with an average particle size of 1.0 μm was mixed with a melt extruder to produce a masterbatch. The masterbatch containing the phosphor was mixed at a content of 1.0 part by weight (Example 1), 2.5 parts by weight (Example 2), and 5.0 parts by weight (Example 3) with respect to 100 parts by weight of a conventional general polyethylene terephthalate resin, melted at a temperature of 280 °C, and spun through a spinning die at a speed of 3200 m / min to produce semi-drawn yarn.

[0048] It was false-twisted at a draw ratio of 1.70, a draw temperature of 220 °C, and a false-twist speed of 500 m / min to obtain a false-twisted yarn of 75 denier / 36 filaments.

[0049] Comparative Example 1 A false-twisted yarn of 75 denier / 36 filaments was obtained in the same manner as in Example 1, except that only a conventional general polyethylene terephthalate resin was used without using a phosphor.

[0050] Comparative Example 2 Except for mixing a masterbatch containing a light emitter at a content of 0.4 parts by weight with 100 parts by weight of polyethylene terephthalate resin, the same procedure as in Example 1 was carried out to obtain a false-twisted yarn of 75 denier / 36 filaments.

[0051] Comparative Examples 3 to 4 Except for using YVO3:Yb with an average particle size of 0.1 μm (Comparative Example 3) and 5 μm (Comparative Example 4) as the light emitter, the same procedure as in Example 1 was carried out to obtain a false-twisted yarn of 75 denier / 36 filaments.

[0052] Experimental Example 1 For the false-twisting yarns of the raw fabrics produced in Examples 1-3 and Comparative Examples 1-4, the physical properties were measured by the following method, and the results are shown in Table 1 below.

[0053] * Strength and elongation: Using Instron 5565 manufactured by Instron, evaluated according to KS K 0412 standard, and the strength and elongation of the recycled polyester long fiber were measured.

[0054] * Workability: Measured by the ratio of the raw yarn produced to the input raw materials.

[0055] Good: Yield 90% or more, Poor: Yield less than 90% * Infrared detection amount: The false-twisting yarns for authenticity identification of the raw fabrics produced in Examples 1-3 and Comparative Examples 1-4 were irradiated with near-infrared light of 980 nm wavelength, and the intensity of near-infrared light at 1020 nm was calculated as the detection amount. The measured value at this time was corrected with respect to the value detected in Example 1, and the relative value was recorded.

[0056]

Table 1

[0057] Although the present invention has been described with reference to specific embodiments, these are merely exemplary, and those having ordinary knowledge in the art should understand that various modifications and changes are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the appended claims.

Claims

1. A fiber made of a fiber-forming polymer, containing 50 to 1000 ppm of a light-emitting substance represented by any one of the following Chemical Formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm, and having an emission wavelength of 800 nm to 2500 nm. A fiber for discriminating the authenticity of a raw fabric. (Chemical Formula 1) Y X V Y O 3 : Sb (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical Formula 2) YbY X V Y Si 2 O 7 :M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2－x Y y V Z Si 2 O 7 :M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Y x V y Si Z O 4 :M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

2. The color L value of the light-emitting substance is 50 or more. The fiber for discriminating the authenticity of a raw fabric according to Claim 1.

3. The fineness of the fiber is 1 denier to 4 deniers. The fiber for discriminating the authenticity of a raw fabric according to Claim 1.

4. The fiber-forming polymer is selected from the group consisting of polyester-based, acrylic-based, polyamide-based, polyvinyl alcohol-based, acetate-based, polypropylene-based, polyolefin-based, polycarbonate-based, and cellulose-based. The fiber for discriminating the authenticity of a raw fabric according to Claim 1.

5. The polyester-based fiber-forming polymer is one or more selected from the group consisting of polyethylene terephthalate homopolymer, polyethylene terephthalate copolymer, polybutylene terephthalate, polycyclohexylene cyclohexanedicarboxylate, polycyclohexylene terephthalate, and polytrimethylene terephthalate. The fiber for discriminating the authenticity of a raw fabric according to Claim 4.

6. After manufacturing an infrared light-emitting chip by introducing a light-emitting substance represented by any one of the following Chemical Formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm, and having an emission wavelength of 800 nm to 2500 nm, in the polymerization step, the chip is used for spinning to produce a fiber. A method for manufacturing a fiber for discriminating the authenticity of a raw fabric. (Chemical Formula 1) Y X V Y O 3 : Sb (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical Formula 2) YbY X V Y Si 2 O 7 :M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 3) Yb 2－x Y y V Z Si 2 O 7 :M (wherein 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Y x V y Si Z O 4 :M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

7. A fiber-forming polymer chip is compounded with a light-emitting substance powder represented by any one of the following Chemical Formulas 1 to 4, having an average particle size of 0.5 μm or more and less than 5 μm, and having an emission wavelength of 800 nm to 2500 nm to manufacture an infrared light-emitting chip, and the chip is used for spinning to produce a fiber. A method for manufacturing a fiber for discriminating the authenticity of a raw fabric. (Chemical Formula 1) Y X V Y O 3 : Sb (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1); (Chemical Formula 2) YbY X V Y Si 2 O 7 :M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, M is Nd 3+ or Er 3+ ) (Chemical Formula 3) Yb 2－x Y y V Z Si 2 O 7 :M (where 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ); (Chemical Formula 4) Yb a Y x V y Si Z O 4 :M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

8. A step of compounding a fiber-forming polymer chip with a phosphor powder having an average particle size of 0.5 μm or more and less than 5 μm and represented by any one of the following Chemical Formulas 1 to 4 and having an emission wavelength of 800 nm to 2500 nm to produce a light-emitting masterbatch, and a step of spinning after blending the light-emitting masterbatch and a general chip. A method for manufacturing a fiber for discriminating authenticity of a raw fabric. [Chemical Formula 1] Y X V Y O 3 : Sb (In the formula, 0 < X ≤ 1, 0 < Y ≤ 1); [Chemical Formula 2] YbY X V Y Si 2 O 7 :M (where 0 < X ≦ 1, 0.01 < Y ≦ 1, M is Nd 3+ or Er 3+ ); [Chemical Formula 3] Yb 2－x Y y V Z Si 2 O 7 :M (wherein, 0 < X ≦ 1, 0 < Y ≦ 1, 0 < Z ≦ 1, and M is Nd 3+ or Er 3+ ); [Chemical Formula 4] Yb a Y x V y Si Z O 4 :M (where 0 < a ≤ 1, 0 < X ≤ 1, 0 < Y ≤ 1, 0 < Z ≤ 1, and M is Nd 3+ or Er 3+ ).

9. A raw fabric including the fiber for discriminating authenticity of a raw fabric according to any one of Claims 1 to 5, An infrared light source unit that emits infrared rays to the raw fabric to be discriminated for authenticity, An infrared light receiving unit that receives infrared rays reflected from the raw fabric to be discriminated for authenticity, A control unit that controls the infrared light source unit and the infrared light receiving unit and discriminates the authenticity of the raw fabric to be discriminated for authenticity by using the infrared rays received by the infrared light receiving unit. A system for discriminating authenticity of a raw fabric using the fiber for discriminating authenticity of a raw fabric.

Images