A method of manufacturing a protective fiber, protective fiber and counterfeit paper

 

(57) Abstract:

The method is intended for the manufacture of protective fibers and allows you to get a protective fiber, which has a high degree of protection and is suitable for use on tamper-resistant paper, intended for the manufacture of valuable documents. According to the method is carried out plexus fibers with weight room from 5 to 30 denier for the formation of twisted yarns, dyeing woven yarn dye or pigment with the formation of dyed different colors plots fibers or unpainted section of the fiber, drying the dyed woven yarn and then cut to obtain a protective fibers in the form of staple fibers. The obtained protective fibers have shades of colors and are used in the manufacture of tamper-resistant paper. 3 S. and 4 C.p. f-crystals, 4 Il.

The scope of the invention

The invention relates to a method of manufacturing a protective fiber, protective fiber and protected from counterfeiting) paper containing such fibers.

Background of the invention

Valuable documents, such as banknotes, stocks, bonds, cheques, certificates (warrants) and identification card, must be protected against forgery and the strips or threads embedded in it.

In Japanese patent application 90-293500 described protected from counterfeit paper containing protective fibers obtained by uniform dyeing natural or synthetic fibers visible or invisible fluorescent paint and trim painted fiber into segments of a given length. However, such a single color (monochromatic) protective fibers have limited effectiveness from the point of view of preventing counterfeiting.

In Korea patent 111723 described multicolor protective fiber obtained by the process comprising the steps: placing a mask on the fiber span and staining of the open area of the first fiber paint, moving the mask on the painted area, which opens to the impact of unpainted area, painting the unpainted section of the second fiber paint and cutting the fibers into segments of the desired length to obtain a multicolor protective fibers with a high degree of security.

However, this complex process has a low productivity.

The closest analogue of the present invention can be considered a method of manufacturing a protective fiber, known from German patent 67771 is obrazovaniya protective fiber in the form of staple fiber, after dyeing the threads of her dry.

However, such Raspletina protective fiber, single-thread, have limited effectiveness from the point of view of preventing counterfeiting.

Brief description of the invention

The present invention is to develop an improved method for obtaining protective fibers, suitable for use in protected paper.

Another objective of the present invention is the development of new protective fibers, suitable for use in protected paper.

Another objective of the present invention is to develop protected from counterfeit paper containing protective fiber having a high degree of security.

In accordance with this invention features a method of manufacturing a protective fiber, according to which the exercise plexus fibers with weight room from 5 to 30 denier for the formation of twisted yarns, dyeing woven yarn dye or pigment with the formation of dyed different colors plots fibers or unpainted section of the fiber, drying the dyed woven yarn and then cut for Poluchenie implementation of the present invention proposes a method of manufacturing a protective fiber, which further comprises an operation staining of staple fibers other paint or pigment after cutting twisted yarns.

In accordance with another preferred embodiment of the present invention proposes a method of manufacturing a protective fibers, whereby the fibers are woven in the form of a twisted yarn with two or three threads. In accordance with another preferred embodiment of the present invention proposes a method of manufacturing a protective fiber, according to which the staple fibers are dyed at a temperature in the range from 80 to 100oC.

In accordance with the present invention it is also proposed protective fiber obtained in accordance with any of the above methods, and counterfeit paper containing protective fiber obtained in accordance with any of the above methods.

Brief description of drawings

The present invention will become apparent from the following description when considered in conjunction with the attached drawings:

Fig. 1 schematically shows the woven fibers in the form of a twisted yarn with two strands;

Fig. 2 schematically depicts splavleny in accordance with the present invention;

Fig.4 illustrates a variant protected from counterfeit paper containing sealed protective fibers made in accordance with the present invention.

Detailed description of the invention

In the practical implementation of the present invention, the fiber 1 with weight room from 5 to 30 denier, which may be any fiber traditionally used in this area, including natural fibers and synthetic fibers such as polyamide, viscose yarn, polyester and cotton yarn can be woven in the form of twisted yarns 21 of the two threads, as shown in Fig.1, or twisted yarns 22 of the three strands, as shown in Fig.2, or woven filaments twisted around the respective strip, for example a wire, or twisted yarns (threads) marker strip, etc.

Woven fiber is dyed with a dye or pigment in the usual way. Examples of dyes or pigments that can be used in the present invention, can be any dyes traditionally used in this area, including acid dyes and direct (substantive) dyes such as Acid Blue AS, Acid Rhodamine B, Uvitex, Papilion Yellow F, TBF (terasile brilliant flavine) and GFF.

JV is ku every fiber partially closed by the other fiber(s), and their portions are dyed to different colors depending on the degree of masking.

The shades of color in the fiber can be adjusted by adjusting the degree of twisting and time staining. In that case, when the resistance to torsion of a large and time staining brief, the area of the twisted fiber, which is tightly closed (screened) other fibers may remain unpainted, as shown in Fig.3, which shows that site 31 painted, while section 32 is not painted.

Painted fiber can be cut by using any of the conventional methods, well known in this field, into segments of desired length, preferably from 3 to 6 mm

According to the present invention painted and cut fiber can be dyed other paint/pigment to obtain fibers having different shades of two or more colors. Paint/pigment suitable for use in the second operation staining may be any dye traditionally used in this area, including acid dyes and direct (substantive) dyes such as Acid Blue AS, Acid Rhodamine B, Uvitex, Papilion Yellow F, TBF (terasile brilliant flavine) and GFF.

oWith, the fiber can be given an S-shape, which intensifies its protective properties from the point of view of preventing forgery.

Protective fibers having the shades obtained in accordance with the present invention can be used in the manufacture counterfeit-protected securities by use of any of the traditional methods of paper production, is well known in this field.

For example, security fibers of the present invention can be mixed with materials for paper production with the aim of obtaining protected from counterfeit paper containing protective fibers uniformly dispersed therein, as shown in Fig.4.

The following examples are intended to further illustrate the invention without limiting its scope.

Example 1: Obtaining protective fiber

Polyamide fiber with weight room 20 denier was woven in the form of a twisted yarn of the two threads, as shown in Fig.1.

Dye Acid Blue AS was dissolved in water with the hydrogen index 4-5 to a concentration of 1-2 wt.% to obtain a dye solution. Woven fiber was dipped in the solution and stained with tempera the dyed fiber was cut into segments of length 3-5 mm

Received the above image cut (staple) fibers were stained in a solution of TBF with a concentration of 1-2 wt.% at a temperature of approximately 90oC for 10-30 minutes, thoroughly washed with water and dried.

Example 2: Getting counterfeit-protected securities

10 wt.% a mixture of titanium dioxide, white carbon black, talc and calcium carbonate, and 0.1-1 wt.% epoxy resin was added to 0.2-1% suspension of pulp in the tank for pulp to form the raw material for paper.

Protective fiber obtained in example 1 were added to the initial mixture for the production of paper, prepared as above, to a concentration of 0.002 to 1.0%. The mixture was well mixed and molded protected from counterfeit paper with a density of 60-100 g/m2.

Although the invention has been described in connection with the above specific cases, it should be recognized that professionals in this field can be made of various modifications and changes of the invention, which are also within the scope of protection defined by the attached claims.

1. A method of manufacturing a protective fiber, according to which the exercise plexus fibers with weight but what Finance dyed to different colors plots fibers or unpainted fiber span, drying dyed woven yarn and then cut to obtain a protective fiber in the form of staple fibers.

2. The method according to p. 1, which contains activity staining of staple fibers other paint or pigment after cutting twisted yarns.

3. The method according to p. 1 or 2, according to which the fibers are woven in the form of a twisted yarn with two strands.

4. The method according to p. 1 or 2, according to which the fibers are woven in the form of a twisted yarn with three threads.

5. The method according to p. 2, according to which the staple fibers are dyed at a temperature in the range from 80 to 100oC.

6. Protective fiber obtained by the method according to any of paragraphs. 1-5.

7. Anti-forgery paper containing fibers obtained by the method according to any of paragraphs. 1-5.

 

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FIELD: protective devices, applicable in such protected documents as banknotes, passports, visas, property rights, licenses, registration papers, cheques, transfers of money, warrants, etc.

SUBSTANCE: the magnetic/metal protective device for use with an object, so as to provide a great number of protective tags has a bearing base of a certain width. The magnetic/metal protective tag has a metal layer that is positioned at least on a section of the bearing base for provision of metal protective tags. The metal layer forms a great number of conducting sections on the bearing base. These sections are separated from one another by non-conducting sections, which pass completely through the entire width of the bearing base together with the magnetic layer, which is positioned at least on a lesser sections at least of one of the mentioned great number combination with it for provision of magnetic protective tags. And at least a part on at least one of the conducting section has hollows, which form visually recognizable tags.

EFFECT: enhanced reliability of protection of documents against forgery.

4 cl, 14 dwg

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