A method of manufacturing counterfeit securities and the paper is protected from a fake

 

(57) Abstract:

Security paper and method of its manufacture relate to the generation of papers, documents, and other paper products, tamper - from etching of the text. The method includes preparing a suspension of paper pulp, dosing in the paper slurry paste containing a substance that protects the paper from etching of the text with an organic solvent, glycerin or sodium carboxymethylcellulose and sodium lauryl ethylsulfonyl. When this protective substance selected from the group consisting of 1,5-di-p-toluylenediamine, 1,4-di-p-toluylenediamine or their mixture with purple dye soluble. Then prepare the paper and impregnating it with an aqueous solution of a binder, followed by drying and processing. In the junction before impregnation enter the indicator composition on the basis of salts of diphenylguanidine with the addition of indicators that change color when interacting with inorganic reagents. The technical result is simplifying the process and ensuring the protection paper from the etching substances of different breeds. 2 c. and 2 C.p. f-crystals.

The invention relates to the manufacture of valuable papers and documents that are protected from vytravlivaetsya manufacture of paper in a paper machine, the introduction to the paper during its manufacture at least one security sign, molding paper and subsequent drying (GB 2180564, class D 21 N 5/10, 1987). However, made from such paper documents have little to pollution and quickly become unfit for consumption. This disadvantage addresses the way in which paper is formed in the wet state, this paper includes one or more security features. On paper put gluing agent for sizing. Then, on one or both sides coated paper coated, containing colourless pigment polyurethane. The coating may contain functional additives with the proviso that the presence of functional additives will not lead to an increase in the opacity of paper more than 1%. After application of the polyurethane the paper is dried (EN 2138593, 1999). However, the known method is complicated and time-consuming. The task of the invention is to simplify the method and protection paper from the etching substances of different nature.

The problem is solved by the described method of manufacturing counterfeit securities, comprising preparing a suspension of paper pulp, manufacturing, impregnation water rastumani mass, contains a substance that protects the paper from etching of the text with an organic solvent in the following ratio to the components, wt. including:

The protective substance 1-3

Glycerin or noticebox

methylcellulose in the form of a 1-5% solution of 2-6

Sodium lauryl ethylsulfonyl 0,5-2

when this protective substance selected from the group of 1,5-di-p-toluylenediamine, 1,4-di-p-toluylenediamine or their mixture with purple dye soluble, and the binder is injected indicator composition in an amount of 0.3-1 wt.% on the basis of salts of diphenylguanidine with the addition of indicators that change color when interacting with inorganic reagents.

In the junction lead to the following indicator composition, wt.h.:

Titularity or

its ammonium salt of 2

P-NITROPHENOL 1

Acetate or chloride

diphenylguanidine 45-65,

or in the junction introduce the following indicator composition, wt. including:

Indicator m-crazyby purple 2

The indicator bromocresol purple 1

Acetate or chloride

diphenylguanidine 45-65

The problem is solved securities, zididada examples of the method and properties of the resulting paper.

Example 1

The paper is prepared from a suspension containing fibers of bleached sulphate pulp, ground up to 40-50°SHR. In the suspension is milled cellulose serial input chalk in the amount of 10-12% to the fiber, the dimer of alkylbetaine in the amount of 0.4-0.8% fiber, modified cationic starch in an amount of 0.4-1.0% by fiber. In the resulting paper weight enter a paste of the following composition, wt.h.:

1,4 - Di-p-toluylenediamine 1

Glycerin 4

Sodium lauryl ethylsulfonyl 1

The said composition is administered at the rate of 0.2% by weight of sulphate pulp. Then all the components are mixed with paper pulp. From the thus prepared paper pulp to the paper machine made paper. Cast paper is subjected to pressing and drying, and then soaked in size tub with a solution of a binder that contains, wt%:

Polyvinyl alcohol 1

Glycerin 1

The indicator composition 0,3

The indicator composition prepared in advance by mixing 1 wt.h. the bromocresol purple, 2 wt.h. m-crisologo purple, 45 wt.h. acetate diphenylethylene. Then the paper is dried and processed on the calender.

P the solvents (acetone, white spirit, benzene and others) on paper forms a spot of green, and, therefore, the paper is protected from etching a wide range vytravlivayutsya substances.

Example 2

The paper is prepared from a suspension containing fibers of bleached sulphate pulp and cotton pulp, ground up to 40-50°SHR. In the suspension is milled cellulose serial input chalk in the amount of 10-12% to the fiber, the dimer of alkylbetaine in the amount of 0.4-0.8% fiber, modified cationic starch in an amount of 0.4-1.0% by fiber. In the resulting pulp is injected pasta, representing the following composition, wt.h.:

1,5 - Di-p-toluylenediamine 1

Dye soluble

purple 1

An aqueous solution

Na-carboxymethylcellulose

with a concentration of 2.5% 6

Sodium lauryl ethylsulfonyl 0,5

The above-mentioned structure imposed at the rate of 0.7% by weight of sulphate pulp. Then all the components are mixed with paper pulp. From the thus prepared paper pulp to the paper machine made paper. Cast paper is subjected to pressing and drying, and then soaked in size tub aqueous mortar composition 1

when this indicator composition is made form a mixture of 1 wt.h. the bromocresol purple, 2 wt.h. meta-crisologo purple, and 65 wt. h chloride of diphenylguanidine.

The impregnated paper is dried, processed on a machine calender and cut into sheets. The resulting paper has sensitivity to the effects of vytravlivayutsya substances, namely: the effects on paper alkaline solutions (aqueous solutions of caustic soda, soda, soap, detergents) on paper forms stain dark blue color when exposed to paper household bleach (sodium hypochlorite, hydrogen peroxide) on paper forms a spot of light brown or purple-brown color when exposed to paper acid solutions (aqueous solutions of sulfuric, hydrochloric, citric acid) on paper forms stain pink, when subjected to paper organic solvents (acetone, white spirit, benzene, ethyl alcohol and other) on paper forms spots purple color, and therefore, the paper is protected from etching a wide range vytravlivayutsya substances.

Example 3

The paper is prepared from a suspension containing fibers of bleached sulphate pulp and cotton of all the% fiber, dimer of alkylbetaine in the amount of 0.4-0.8% fiber, modified cationic starch in an amount of 0.4-1.0% by fiber. In the resulting pulp is injected pasta representing the following composition, wt.h.:

1,4 - Di-p-toluylenediamine 1

Glycerin 2

Sodium lauryl ethylsulfonyl 0,5

The said composition is administered at the rate of 0.3% by weight of sulphate pulp. Then all the components are mixed with paper pulp. From the thus prepared paper pulp to the paper machine made paper. Cast paper is subjected to pressing and drying, and then soaked in size bath with an aqueous solution of a binder that contains, wt%:

Polyvinyl alcohol 1

Glycerin 1

The indicator composition 0,3

when this indicator composition is made in the form of a mixture of 1 wt.h. p-NITROPHENOL, 2 wt.h. ammonium salt of titularity and 50 wt.h. acetate of diphenylguanidine. The impregnated paper is dried, processed on a machine calender and cut into sheets. The resulting paper has sensitivity to the effects of vytravlivayutsya substances, namely: the effects on paper alkaline solutions (aqueous solutions of caustic soda, celibately (sodium hypochlorite, hydrogen peroxide) on paper forms a spot of light brown or purple-brown color when exposed to paper acid solutions (aqueous solutions of sulfuric, hydrochloric, citric acid) on paper forms stain pink, when subjected to paper organic solvents (acetone, white spirit, benzene, and others) on paper forms spots of green color, and therefore, the paper is protected from etching a wide range vytravlivayutsya substances.

Example 4

The paper is prepared from a suspension containing fibers of bleached sulphate pulp, ground up to 40-50°SHR. In the suspension is milled cellulose serial input chalk in the amount of 10-12% to the fiber, the dimer of alkylbetaine in the amount of 0.4-0.8% fiber, modified cationic starch in an amount of 0.4-1.0% by fiber. In the resulting pulp is injected pasta representing the following composition, wt.h.:

1,5 - Di-p-toluylenediamine 1

Glycerin 2

Sodium lauryl ethylsulfonyl 2

The said composition is administered at the rate of 0.3% by weight of sulphate pulp. Then all the components are mixed with paper pulp. From the thus prepared paper pulp on bulahdelah the size bath with an aqueous solution of a binder, contains, wt%:

Polyvinyl alcohol 1

Glycerin 1

The indicator composition 0,5

when this indicator composition is made in the form of a mixture of 1 wt.h. p-NITROPHENOL, 2 wt.h. titularity and 50 wt.h. acetate of diphenylguanidine.

The impregnated paper is dried, processed on a machine calender and cut into sheets. The resulting paper has sensitivity to the effects of vytravlivayutsya substances, namely: the effects on paper alkaline solutions (aqueous solutions of caustic soda, soda, soap, detergents) on paper forms a spot of bright purple color when exposed to paper household bleach (sodium hypochlorite, hydrogen peroxide) on paper forms a spot of light brown or purple-brown color when exposed to paper acid solutions (aqueous solutions of sulfuric, hydrochloric, citric acid) on paper forms stain pink, when subjected to paper organic solvents (acetone, white spirit, benzene, ethyl alcohol and other) on paper forms stains blue or dark grey in color, and therefore, the paper is protected from etching a wide range vytravlivayutsya substances.

1. Sporopollenin paper, impregnation with an aqueous solution of a binder, drying and processing, characterized in that the suspension is metered pasta in the amount of 0.2-0.7% of the weight of the paper pulp, which contains a substance that protects the paper from etching of the text with an organic solvent, in the following ratio to the components, wt.h.:

The protective substance 1-3

Glycerin or sodium carboxymethyl-

cellulose in the form of a 1-5% solution of 2-6

Sodium lauryl ethylsulfonyl 0,5-2

when this protective substance selected from the group of 1,5-di-p-toluylenediamine, 1,4-di-p-toluylenediamine or their mixture with purple dye soluble, and the binder is injected indicator composition in an amount of 0.3-1 wt.% on the basis of salts of diphenylguanidine with the addition of indicators that change color when interacting with inorganic reagents.

2. The method according to p. 1, characterized in that a binder introduce the following indicator composition, wt.h.:

Titularity or

its ammonium salt of 2

p-NITROPHENOL 1

Acetate or chloride

diphenylguanidine 45-65

3. The method according to p. 1, characterized in that a binder introduce the following indicator composition, wt.h.:

diphenylguanidine 45-65

4. Securities, protected from a fake by etching manufactured by the method described in paras.1-3.



 

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