Functional Fiber for Preventing Forgery

Abstract

The present invention relates to a functional fiber for preventing forgery, more particularly functional fiber for preventing forgery which exerts functionality by mixing special pigments to composite fibers of side by side shape on which two components are attached. The functional fibers of two components structure according to the present invention are consisted of synthetic high molecules, and have functionality which fibers display color by colored pigments with visual or fluorescence by light of ultraviolet ray or absorbing property of infrared pigments by being produced by mixing colored pigments, fluorescent pigments, infrared pigments and the like to each resin, and then melt-spinning the said mixture, or post treating it. While such fibers according to the present invention are hard to have a property of fibers since those contain pigments above a specific concentration, the fibers have functionality for preventing forgery by mixing a monofilament which is obtained by cutting the said fibers to papers, resins of high molecules, or coating agents so that it can be used as a functional element for preventing forgery and identifying authenticity of particular product demanded security such as a bank bill, a bond, a passport, an identity card.

1 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery is produced by heating and mixing the first ingredient and the second ingredient of a form of chip made of synthetic high molecules to melt-spine it and then introducing a special pigment with a dyeing method.   
     
     
         2 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery is produced by preparing a master batch for melt-spinning which is produced by adding a special pigment to any one of the first ingredient and the second ingredient of a form of chip made of synthetic high molecules and then heating and mixing, and heating and mixing the said master batch with the other one ingredient to melt-spine it, and then introducing a special pigment with a dyeing method.   
     
     
         3 . A fiber for preventing forgery according to  claim 1 , characterized in that the said synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers are selected from polyester, nylon, polypropylene, polyethylene and polyurethane which are enable to melt and spine. 
     
     
         4 . A fiber for preventing forgery according to  claim 1 , characterized in that the said synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers use synthetic high molecules which the first ingredient and the second ingredient are same or different due to mixing property of a special pigment. 
     
     
         5 . A fiber for preventing forgery according to  claim 1 , characterized in that the said special pigment being mixed to the synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers is colored pigments, fluorescent pigments, infrared pigments and the like, and it is possible for a monofilament to have a various effect in visible ray, ultraviolet ray, infrared ray and the like by blending a special pigment differently to the synthetic high molecules of the first ingredient and the second ingredient. 
     
     
         6 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery may be produced such that half side displays blue and the other half side displays yellow by charging each master batch of the first ingredient and the second ingredient into an extruder for spinning with the ratio of 50:50 by weight and then melt-spinning such that a diameter of fibers is 30 μm (9 denier), wherein the said first ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of Phthalocyanine Blue (C.I. 74160) having blue color, colored pigment, to 95% by weight of polyester chip of synthetic high molecules and then by heating and mixing, and the said second ingredient is prepared to a master batch for melt-spinning by adding 7% by weight of Disazoyellow (C.I. 21096) having yellow color, colored pigment, to 93% by weight of polyester chip of synthetic high molecules and then by heating and mixing.   
     
     
         7 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery may be produced such that red color is displayed at visible ray, fluorescent red color is displayed at ultraviolet ray of long wavelength, and fluorescent green color is displayed at ultraviolet ray of short wavelength by charging each master batch of the first ingredient and the second ingredient into an extruder for spinning with the ratio of 50:50 by weight and then melt-spinning such that a diameter of fibers is 30 μm (9 denier), wherein the said first ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of Rhodamine B (C.I. Basic Violet 10) having red color, colored and fluorescent pigment, to 95% by weight of polyamide (Nylon 6, melting point: 250° C.) chip of synthetic high molecules and then by heating and mixing, and the said second ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of fluorescent pigment whose appearance is white and which displays fluorescent green color at ultraviolet ray of short wavelength to 95% by weight of polyamide chip of synthetic high molecules and then by heating and mixing.   
     
     
         8 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery may be produced such that white color is displayed at visible ray, red color is displayed at ultraviolet ray of short wavelength, and fluorescent green color is displayed at ultraviolet ray of long wavelength by charging each master batch of the first ingredient and the second ingredient into an extruder for spinning with the ratio of 50:50 by weight and then melt-spinning such that a diameter of fibers is 30 μm (9 denier), wherein the said first ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of fluorescent pigment whose appearance is white and which displays fluorescent blue color at ultraviolet ray of short wavelength to 95% by weight of polyamide (Nylon 6, melting point: 250° C.) chip of synthetic high molecules and then by heating and mixing, and the said second ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of fluorescent pigment whose appearance is white and which displays fluorescent green color at ultraviolet ray of long wavelength to 95% by weight of polyester chip of synthetic high molecules and then by heating and mixing.   
     
     
         9 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery may be produced such that off-white color is displayed at visible ray, red color is displayed at ultraviolet ray of long wavelength, and black color is displayed at a region of infrared ray by charging each master batch of the first ingredient and the second ingredient into an extruder for spinning with the ratio of 50:50 by weight and then melt-spinning such that a diameter of fibers is 30 μm (9 denier), wherein the said first ingredient is prepared to a master batch for melt-spinning by adding 3% by weight of fluorescent pigment whose appearance is white and which displays fluorescent red color at ultraviolet ray of short and long wavelength to 97% by weight of polyester chip of synthetic high molecules and then by heating and mixing, and the said second ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of infrared ray pigment whose appearance is brown and which absorbs infrared ray at region of near infrared ray to 95% by weight of polyamide chip of synthetic high molecules and then by heating and mixing.   
     
     
         10 . A fiber for preventing forgery that a composite fiber of side by side type being attached two components is prepared to a monofilament and it is introduced at a procedure of preparing papers,
 wherein the said fiber for preventing forgery may be produced such that red color is displayed at visible ray, red color is displayed at ultraviolet ray, and black color is displayed at region of infrared ray by charging each master batch of the first ingredient and the second ingredient into an extruder for spinning with the ratio of 50:50 by weight and then melt-spinning such that a diameter of fibers is 30 μm (9 denier), wherein the said first ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of Rhodamine B having red color, colored and fluorescent pigment, to 95% by weight of polyamide chip of synthetic high molecules and then by heating and mixing, and the said second ingredient is prepared to a master batch for melt-spinning by adding 5% by weight of infrared ray pigment whose appearance is green and which absorbs infrared ray at region of near infrared ray to 95% by weight of polyamide chip of synthetic high molecules and then by heating and mixing.   
     
     
         11 . A functional fiber for preventing forgery characterized in that it is produced by preparing the composite fibers having a cross section of a side by side type by melting and spinning a master batch of at least two kinds obtained by mixing a functional pigment to resins which have different melting point each other, and then by heat treating at thermal deformable temperature of the said resins. 
     
     
         12 . A fiber for preventing forgery according to claims  claim 11 , characterized in that the said functional pigment is at least one selected from colored pigments, fluorescent pigments, infrared pigments so that it express a different color according to wavelength of light. 
     
     
         13 . A fiber for preventing forgery according to claims  claim 12 , characterized in that the said resins be prepared by using at least one selected from polyester, nylon, polypropylene, polyethylene and polyurethane. 
     
     
         14 . A fiber for preventing forgery according to claims  claim 13 , characterized in that the said master batch is consisted of two kinds, the first master batch and the second master batch whose melting temperature is different, and the said first master batch and the said second master batch may be prepared by using the same resin or different resin. 
     
     
         15 . A fiber for preventing forgery according to  claim 11 , characterized in that the said composite fiber be produced such that it has a cross section of a side by side type by charging a master batch of two kinds or more into each extruder for spinning and by melting and spinning it through one nozzle. 
     
     
         16 . A fiber for preventing forgery according to  claim 14 , characterized in that the said first master batch and the said second master batch are charged into each extruder for spinning and then molten and spun it through one nozzle, to produce to have a cross section of a side by side type. 
     
     
         17 . A fiber for preventing forgery according to  claim 15 , characterized in that the said functional fiber for preventing forgery have a special pattern by producing a monofilament with cut of the said composite fiber being molten and spun and then heat treating at thermal deformable temperature of the said resins, or by mix-spinning the said composite fiber to occur twisting at a constant length and heat treating at thermal deformable temperature of the said resins, and then cutting it to prepare with a monofilament. 
     
     
         18 . A fiber for preventing forgery according to  claim 17 , characterized in that the said special pattern is “C” type, “O” type or “S” type. 
     
     
         19 . A fiber for preventing forgery according to  claim 2 , characterized in that the said synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers are selected from polyester, nylon, polypropylene, polyethylene and polyurethane which are enable to melt and spine. 
     
     
         20 . A fiber for preventing forgery according to  claim 2 , characterized in that the said synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers use synthetic high molecules which the first ingredient and the second ingredient are same or different due to mixing property of a special pigment. 
     
     
         21 . A fiber for preventing forgery according to  claim 2 , characterized in that the said special pigment being mixed to the synthetic high molecules of the first ingredient and the second ingredient consisting composite fibers is colored pigments, fluorescent pigments, infrared pigments and the like, and it is possible for a monofilament to have a various effect in visible ray, ultraviolet ray, infrared ray and the like by blending a special pigment differently to the synthetic high molecules of the first ingredient and the second ingredient.