KR101067588B1 - Fiber for counterfeit discrimination and it's making method - Google Patents

Abstract

The present invention relates to an authenticity identifying fiber and a method of manufacturing the same.

In the authenticity identifying fiber of the present invention, a first inorganic pigment that is excited in infrared light and emits visible light, a second inorganic pigment that is excited in ultraviolet light and emits visible or infrared light, and a low melting point resin are disposed in the center, X And a third inorganic pigment that is excited by the beneficiation and emits visible light, and a high melting point resin is disposed at the periphery outside the center portion.

According to the present invention, an inorganic pigment that is excited in infrared rays and emits visible light and an inorganic pigment that is excited in ultraviolet rays and emits visible or infrared light are disposed at the center together with a low melting point resin, and are excited by X-ray light to emit visible light. Inorganic pigments and high-melting point resins are arranged at the periphery of the center, providing position identification fibers with high authenticity identification and manufacturing methods to improve the security of security products, thereby establishing sound securities and security products distribution order. Will contribute to

More specifically, first, inorganic pigments excited by infrared light to emit visible light, inorganic pigments excited by ultraviolet light to emit visible light or infrared light, and inorganic pigments excited by X-ray light to emit visible light are included. When irradiated with light of different wavelengths, the fluorescence property is shown to improve the security performance compared to when the conventional two types of light are irradiated. Second, a pigment that is excited by infrared rays and emits visible light, and is excited by ultraviolet rays. Inorganic pigments that emit infrared light have poor fluorescence properties at high temperatures and are easy to change in physical properties. They are placed at the center with low melting point resins, and inorganic pigments which are excited by X-ray light and emit visible light are changed at high temperatures. Does not occur and it has fluorescence characteristics. In the case of observation with an electron microscope of about 1,000 times under different light irradiation conditions, the arrangement of pigments excited in infrared rays and ultraviolet rays and pigments excited in X-ray light is divided into the center and the surroundings. High security performance is difficult to identify, and third, inorganic pigments excited in infrared rays or ultraviolet rays are changed at high temperature, but inorganic pigments excited in X-ray light have high temperature. In the manufacturing by using a small change in the physical properties it can be easily produced without manufacturing difficulties.

Security, fluorescent, fiber, wavelength

Description

Fiber for counterfeit identification and its manufacturing method {Fiber for counterfeit discrimination and it's making method}

The present invention is to prevent the forgery of security products such as banknotes, checks, gift certificates, etc., or to prevent the forgery of security products such as passports, certificates, etc., the authenticity of the textile and its identity to be applied to the manufacturer's clothing made of various fibers and the like It relates to a manufacturing method.

The main characteristics of security fibers to prevent counterfeiting of security products such as banknotes, checks, gift certificates, etc., or security products such as passports, certificates, etc., include the manufacture of fibers, including special materials, or the dyeing coating of special materials on the fibers. It provides a function as a security element through a method that emits light, discolors, fluoresces and phosphoreses or has partial characteristics in response to specific wavelengths or thermal conditions.

As a related art, US Patent US4655788 discloses a method for producing a fluorescent fiber comprising a fluorescent material excited by infrared light, visible light, ultraviolet light.

In addition, the present application filed and registered 'color copper gifts and its method of manufacturing honcho paper' (Korea Patent Publication No. 10-259825) discloses a method for producing a fiber having a plurality of fluorescent colors using partial dyeing technology have.

However, there is a problem that counterfeiting is possible when using one containing a special material having luminescent properties.

Accordingly, the present invention is filed and registered in the 'multi-luminescent gift and its manufacturing method' (Korea Patent Publication No. 10-574411) is a fluorescent material that is excited by a visible light source and emits infrared light, and is excited by an infrared light source visible light Disclosed is a technology for producing a security fiber comprising a fluorescent material emitted to.

This technique further reduces the possibility of counterfeiting by including two special materials that are excited and emitted from different light sources.

However, with the recent development of synthetic technology, commercial fluorescent materials are widely used.

Therefore, although the commercial orphans are lagging behind in luminescent properties and quality compared to the security materials, they are enough to deceive the general public, and thus, there is a need for further strengthening the security of security products.

The authenticity identifying fiber of the present invention and its manufacturing method are intended to solve the problems caused in the prior art as described above, inorganic pigments that are excited in infrared light to emit visible light, and inorganics that are excited in ultraviolet light to emit visible light or infrared light. Pigment is placed in the center with low melting point resin, and the inorganic pigment and high melting point resin, which are excited by X-ray light to emit visible light, are arranged in the periphery of the center and the position identification fiber having high authenticity discrimination and its manufacture It aims to contribute to the establishment of sound securities and security product distribution order by providing a method to improve the security of security products.

More specifically, first, inorganic pigments excited by infrared light to emit visible light, inorganic pigments excited by ultraviolet light to emit visible light or infrared light, and inorganic pigments excited by X-ray light to emit visible light are included. When irradiating light of different wavelengths, the fluorescence property is shown to improve security performance when compared to the conventional two types of light irradiation.

Second, pigments that are excited in infrared light to emit visible light and inorganic pigments that are excited in ultraviolet light to emit visible light or infrared light have a low fluorescence at high temperatures and are easily changed in physical properties. -Inorganic pigments excited by beneficiation to emit visible light have no fluorescence properties even at high temperatures, and thus have fluorescence properties. In this case, the arrangement of pigments excited in infrared rays and ultraviolet rays and pigments excited in X-ray light is divided into a center and a periphery, thereby providing a high level of security that is generally difficult to identify.

Third, inorganic pigments excited in infrared rays or ultraviolet rays generate physical properties at high temperatures, while inorganic pigments excited in X-ray light are manufactured using low changes in physical properties even at high temperatures. It is intended to be easy to manufacture without.

In order to solve the above problems, the authenticity identifying fiber of the present invention is a first inorganic pigment that is excited in infrared light to emit visible light, a second inorganic pigment that is excited in ultraviolet light to emit visible light or infrared light, and a low melting point resin. Is disposed in the center portion, and a third inorganic pigment that is excited by X-ray light and emits visible light, and a high melting point resin are disposed in the periphery of the center portion.

At this time, the first inorganic pigment and the second inorganic pigment disposed in the center is characterized in that it comprises 0.01 to 20 parts by weight based on 100 parts by weight of the low melting point resin.

In addition, the third inorganic pigment disposed in the peripheral portion is characterized in that it comprises 0.5 to 2.5 parts by weight based on 100 parts by weight of the high melting point resin.

In addition, the diameter of the peripheral portion including the central portion inward is characterized in that it has a thickness of 3 to 50 denier.

In addition, the low melting point resin is characterized in that any one selected from polyolefin-based resin, low melting point polyester resin having a melting point of 180 to 210 degrees Celsius.

In addition, the high melting point resin is characterized in that any one selected from polyamide resin, a high melting point polyester resin having a melting point of 230 to 260 degrees Celsius.

In addition, the infrared ray that the first inorganic pigment is excited to emit light is characterized in that it has a wavelength in the range of 700 ~ 1,500 nm.

In addition, the ultraviolet light that the second inorganic pigment is excited to emit light is characterized in that it has a wavelength in the range of 200 ~ 400 nm.

The method for manufacturing authenticity identifying fibers of the present invention includes a first inorganic pigment that is excited in infrared light and emits visible light, a second inorganic pigment that is excited in ultraviolet light and emits visible or infrared light, and a melting point of 180 to 210 degrees Celsius. Preparing a first master batch by preparing and mixing any one of the low melting point resins selected from polyester resins and polyolefin resins, and then extruding them; A third inorganic pigment that is excited by X-ray light to emit visible light and a high melting point resin selected from a high melting point polyester resin or a polyamide resin having a melting point of 230 to 260 degrees Celsius are prepared, mixed, extruded, and prepared. Preparing a two masterbatch; In the spinning machine equipped with a deep nozzle and a peripheral nozzle to supply the raw material to the center and the periphery thereof, the prepared first master batch is fed to the deep nozzle and the second master batch is spun to produce the fibers. It consists of.

According to the present invention, an inorganic pigment that is excited in infrared rays and emits visible light and an inorganic pigment that is excited in ultraviolet rays and emits visible or infrared light are disposed at the center together with a low melting point resin, and are excited by X-ray light to emit visible light. Inorganic pigments and high-melting point resins are arranged at the periphery of the center, providing position identification fibers with high authenticity identification and manufacturing methods to improve the security of security products, thereby establishing sound securities and security products distribution order. Will contribute to

More specifically, first, inorganic pigments excited by infrared light to emit visible light, inorganic pigments excited by ultraviolet light to emit visible light or infrared light, and inorganic pigments excited by X-ray light to emit visible light are included. When irradiated with light of different wavelengths, the fluorescence property is shown, so that the security performance is improved as compared with the conventional two types of light irradiation.

Second, pigments that are excited in infrared light to emit visible light and inorganic pigments that are excited in ultraviolet light to emit visible light or infrared light have a low fluorescence at high temperatures and are easily changed in physical properties. -Inorganic pigments excited by beneficiation to emit visible light have no fluorescence properties even at high temperatures, and thus have fluorescence properties. Observed by, the arrangement of pigments excited in infrared and ultraviolet and pigments excited in X-ray light can be divided into the center and the surroundings, thereby providing a high level of security that is generally difficult to identify.

Third, inorganic pigments excited in infrared rays or ultraviolet rays generate physical properties at high temperatures, while inorganic pigments excited in X-ray light are manufactured using low changes in physical properties even at high temperatures. It can be manufactured easily without.

Hereinafter, the authenticity identifying fiber of the present invention will be described.

The inventors of the present invention, while studying inorganic pigments for various authenticity identification, inorganic pigments excited by infrared light to emit visible light, or inorganic pigments excited by ultraviolet light to emit infrared light or visible light, the change of physical properties at the high melting point is severe While the fluorescence properties are deteriorated or damaged, it has been found that inorganic pigments excited by X-ray light can be used to produce a security product with a high level of security by using small changes in physical properties even at high melting points.

In other words, the manufacturing characteristics of the conventional security fiber is only a simple mixing of various inorganic pigments having different fluorescence characteristics, but by applying the characteristics according to the melting point of each inorganic pigment and the resin having different melting points It has been found that the placement of each inorganic pigment provides a high degree of security that can be recognized by an electron microscope.

As shown in FIG. 1, the authenticity identifying fiber of the present invention has a single-sided structure divided into a central portion 10 and a peripheral portion 20.

The first inorganic pigment 12, the second inorganic pigment 13, and the low melting resin 11 are disposed in the central portion 10, and the third inorganic pigment 22 and the high melting resin 21 are disposed in the peripheral portion 20. ) Is arranged.

The first inorganic pigment 12 is applied with a pigment having the property of being excited in infrared light to emit visible light, the second inorganic pigment 13 is applied with a pigment having the property of being excited in ultraviolet light to emit visible light or infrared light.

The third inorganic pigment 22 is applied with a pigment having the property of being excited by X-ray light to emit visible light.

The first inorganic pigment 12 and the second inorganic pigment 13 disposed in the central portion 10 have a weight ratio of 1: 1, or a weight ratio of 1:10 to 10: 1, and the mixed weight of the two inorganic pigments is It is added in the range of 0.01 to 20 parts by weight based on 100 parts by weight of the total low melting point resin.

At this time, the weight sum of the first inorganic pigment 12 and the second inorganic pigment 13 is most preferably in the range of 0.01 to 5 parts by weight based on 100 parts by weight of the low melting point resin.

This is an optimal range for maintaining fiber strength because the strength of the fiber is lowered when the amount of the inorganic pigments is added too much.

On the other hand, the third inorganic pigment 22 disposed in the peripheral portion 20 is preferably configured to contain 0.5 to 2.5 parts by weight based on 100 parts by weight of the high melting point resin.

The inner core 10 is disposed inside, and the authenticity identification fiber of the present invention, the periphery 20 is formed on the outside of the center 10 is preferably such that the overall diameter has a thickness of 3 to 50 denier.

In the above configuration, the low melting point resin may be any one selected from a low melting point polyester resin having a melting point of 180 to 210 degrees Celsius or a polyolefin resin.

In addition, the high melting point resin is any one selected from a high melting point polyester resin or a polyamide resin having a melting point of 230 to 260 degrees Celsius.

Examples of low melting polymers include low melting point polyesters such as polymerization products of aliphatic diols and aliphatic dicarboxylic acids having 4 or more carbon atoms, copolymers of aliphatic diols, aliphatic dicarboxylic acids and aromatic dicarboxylic acids having 4 or more carbon atoms, and polyethylene. And polyolefin fibers such as polypropylene, polystyrene, ethylene acetate-ethylene copolymer, and the like.

Examples of high melting point polymers include polyamides, also called nylons, and high melting point polyesters, which are polymerization products of aliphatic diols and aromatic dicarboxylic acids.

Representative examples of high-melting polyesters are polyethylene terephthalates, so-called 'general polyesters'.

On the other hand, the first inorganic pigment 12 is characterized in that it is excited in the infrared range of 700 ~ 1,500 nm to emit light in the visible light.

Fluorescent materials that are excited in the infrared range of 700 to 1,500 nm and emit light in visible light in the range of 400 to 700 nm include LUMILUX RED UC-6 (trade name: manufactured by Honeywell, Germany), UPC-300 (manufactured by cultivation chemical) Etc.

In addition, the second inorganic pigment 13 is characterized in that it is excited in the ultraviolet light in the range of 200 ~ 400 nm to emit light in the infrared or visible light.

Fluorescent materials that are excited in ultraviolet light in the range of 200 to 400 nm and emit light in the infrared light in the range of 700 to 1,500 nm include LUMILUX CD142 (trade name: manufactured by Honeywell, Germany), and are excited in the ultraviolet light in the range of 200 to 400 nm. Fluorescent materials having characteristics that emit light in the visible range of 400 ~ 700 nm include LUMILUX CD128, CD116, CD139 (trade name: manufactured by Honeywell, Germany), PTB460, PTG505, PTR625 (trade name: manufactured by PHOSPHOR THCHNOLOGY), PANAK245 (Uksung) Chemical production).

In addition, the third inorganic pigment 22 is characterized in that it is excited in the X-ray of 100 pm ~ 100nm range and emit light in the ultraviolet ray of 400 ~ 700nm range.

Materials having such fluorescence properties include LUMILUX Green RGS-4, Red RGS-4 (trade name: manufactured by Honeywell, Germany), UKL63 (trade name: manufactured by PHOSPHOR THCHNOLOGY), and the like.

As described above, two kinds of inorganic pigments, ie, the first inorganic pigment, the second inorganic pigment, and the low melting point resin, which maintain the fluorescent characteristic at the high melting point but maintain the fluorescent characteristic at the low melting point, are disposed at the center of the fiber, and the high melting point is By placing a third inorganic pigment and a high melting point resin at the periphery of the fiber that can maintain the fluorescence characteristics in the vicinity of the fiber is not only fluorescence when irradiated with ultraviolet, infrared, X-ray, but also when viewed with an electron microscope of about 1,000 times The arrangement of pigments excited in ultraviolet light and pigments excited in X-ray light looks divided into the center and the periphery, providing a high degree of security that is generally difficult to identify.

Hereinafter, a manufacturing method for manufacturing the authenticity identifying fiber of the present invention as described above will be described.

The method for producing authenticity-identifying fibers of the present invention comprises a first masterbatch manufacturing step, a second masterbatch manufacturing step, and a fiber manufacturing step through spinning.

Iii) manufacturing stage of the first masterbatch

A first inorganic pigment 12 excited by infrared rays to emit visible light, a second inorganic pigment 13 excited by ultraviolet rays and emitting visible or infrared rays, and a low melting point resin having a melting point of 180 to 210 degrees Celsius are prepared and mixed. And then extruded to produce the first masterbatch.

At this time, the operating conditions of the extruder is adjusted according to the type of synthetic resin, the master batch is processed into chips, so that the size of about 5 ~ 15 당 per chip.

The first inorganic pigment 12, the second inorganic pigment 13, and the low melting point resin are as described above.

Ii) second masterbatch manufacturing step

 A third inorganic pigment 22 which is excited by X-ray light to emit visible light and a high melting point resin having a melting point of 230 to 260 degrees Celsius are prepared, mixed, and extruded to prepare a second master batch.

The second master batch is also manufactured through an extruder like the first master batch, but uses the third inorganic pigment 22 and the above-mentioned high melting point resin.

Iii) fiber manufacturing step by spinning

Fibers are produced by spinning the prepared first master batch into the core nozzle and the second master batch into the peripheral nozzle so as to supply raw materials to the center and its periphery, respectively. .

The final thickness of the fiber produced by the spinning machine is suitably about 3 to 50 denier.

If the diameter exceeds 50 denier, the diameter of the fiber is about 80 μm or more, so that it may be easily dropped when included in the security form of paper.

Hereinafter, preferred embodiments of the present invention will be described in detail.

However, the examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

Example 1

1 g of polypropylene resin and 20 g of LUMILUX RED UC-6 (trade name: manufactured by Honeywell, Germany) are prepared as a fluorescent material having the characteristic of being excited in infrared light in the range of 700 to 1,500 nm and emitting light in the visible light in the range of 400 to 700 nm. As a fluorescence material which is excited in ultraviolet light in the range of 200 to 400 nm and emits light in the infrared light in the range of 700 to 1,500 nm, 20 g of LUMILUX CD142 (trade name: manufactured by Honeywell, Germany) is prepared, mixed and introduced into an extruder. The chip was processed to prepare a first masterbatch in the form of a chip.

At this time, the discharge nozzle of the extruder was adjusted so that the first masterbatch could have a size of 8 mm 3.

In addition, a fluorescent material having a characteristic of emitting 1 kg of nylon and X-rays in the range of 100 pm to 100 nm and emitting ultraviolet rays in the range of 400 to 700 nm, 15 g of LUMILUX Green RGS-4 (trade name: manufactured by Honeywell, Germany) After preparation, the mixture was introduced into an extruder and extruded to prepare a second masterbatch in the form of a chip.

At this time, the second master batch was to be the size of ㎣.

Prepare a spinning machine equipped with a core nozzle and a peripheral nozzle to supply raw materials to the center and its periphery, respectively, supply the first master batch with the core nozzle, and apply heat while supplying the second master batch with the peripheral nozzle. Denier thickness fibers were prepared.

At this time, the cross-sectional shape of the fiber was to be oval.

The fiber produced is excited in infrared light in the range of 700 to 1500 nm and emits in visible light in the range of 400 to 700 nm, and is excited in ultraviolet light in the range of 200 to 400 nm and emits in the infrared in the range of 700 to 1500 nm. It is excited by X-ray in the range of pm ~ 100nm and emits light in ultraviolet rays in the range of 400 ~ 700nm.

In addition, the cross-section was irradiated at 1,000 times magnification using an electron microscope, and the core was excited in infrared light to emit light in visible light, and was excited in ultraviolet light to emit light in infrared light. It emits light at.

2. Example 2

Proceed in the same manner as in Example 1, instead of LUMILUX CD142 (trade name: manufactured by Honeywell, Germany) as a fluorescent material having the property of being excited in ultraviolet light in the range of 200 ~ 400 nm and emitting in visible light in the range of 400 ~ 700 nm LUMILUX CD128 (Product name: manufactured by Honeywell, Germany) 20 g was prepared to prepare 30 denier coarse fibers in the oval form.

The fibers produced are excited in infrared light in the range of 700-1,500 nm to emit light in visible light in the range of 400 to 700 nm, and are excited in ultraviolet light in the range of 200 to 400 nm and emit in visible light in the range of 400 to 700 nm. And excited by X-rays in the range of 100 pm to 100 nm to emit light in the ultraviolet range of 400 to 700 nm.

In addition, the cross-section was irradiated at 1,000 times magnification using an electron microscope. The core was excited in infrared light to emit light in visible light, excited in ultraviolet light to emit light in visible light, and in the peripheral part, it was excited in X-ray light. It showed the property of emitting light in ultraviolet light.

1 is a schematic cross-sectional view showing a cross-sectional structure of the authenticity identification fiber of the present invention.

Figure 2 is a flow chart showing a method for producing authenticity identification fiber of the present invention.

<Detailed Description of Major Symbols in Drawing>

10 center portion 11: low melting point resin

12: first inorganic pigment 13: second inorganic pigment

20: peripheral portion 21: high melting point resin

22: third inorganic pigment

Claims (9)

In the authenticity identification fiber, A first inorganic pigment that is excited in infrared rays and emits visible light, a second inorganic pigment that is excited in ultraviolet rays and emits visible or infrared light, and a low melting point resin are disposed in the center, A third inorganic pigment that is excited by X-ray light and emits visible light, and a high melting point resin are arranged at the periphery outside the center portion, Authenticity identification fibers. The method of claim 1, The first inorganic pigment and the second inorganic pigment disposed in the central portion is characterized in that it comprises 0.01 to 20 parts by weight based on 100 parts by weight of the low melting point resin, Authenticity identification fibers. The method of claim 1, The third inorganic pigment disposed in the periphery is characterized in that it comprises 0.5 to 2.5 parts by weight based on 100 parts by weight of the high melting point resin, Authenticity identification fibers. The method of claim 1, Characterized in that the diameter of the periphery including the central portion has a thickness of 3 to 50 denier, Authenticity identification fibers. The method of claim 1, The low melting point resin is polyolefin-based resin, characterized in that any one selected from a low melting point polyester resin of 180 to 210 degrees Celsius, Authenticity identification fibers. The method of claim 1, The high melting point resin is a polyamide resin, characterized in that any one selected from a high melting point polyester resin having a melting point of 230 to 260 degrees Celsius, Authenticity identification fibers. The method of claim 1, Infrared light is excited by the first inorganic pigment is to emit light has a wavelength in the range of 700 ~ 1,500 nm, Authenticity identification fibers. The method of claim 1, Ultraviolet light emitted by the second inorganic pigment is excited and characterized in that having a wavelength in the range of 200 ~ 400 nm, Authenticity identification fibers. In the method for producing a fiber for authenticity identification of any one of claims 1 to 8, Iv) a first inorganic pigment that is excited in infrared light and emits visible light, a second inorganic pigment that is excited in ultraviolet light and emits visible or infrared light, and a low melting point polyester resin or polyolefin resin having a melting point of 180 to 210 degrees Celsius. Preparing and mixing any one low melting point resin and then extruding the first master batch; Ii) a third inorganic pigment which is excited by X-ray light and emits visible light, and a high melting point resin selected from a high melting point polyester resin or a polyamide resin having a melting point of 230 to 260 degrees Celsius, and mixed, and then extruded Preparing a second masterbatch; Iv) Spinning the fiber by supplying the prepared first masterbatch to the core nozzle and the second masterbatch to the peripheral nozzle to the spinning machine equipped with the core nozzle and the peripheral nozzle to supply the raw material to the center and the periphery thereof, respectively. It comprises; manufacturing; Authenticity identification fiber manufacturing method.

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