Counterfeiting ivory board and manufacturing method thereof

Abstract

The invention discloses a counterfeiting ivory board and a manufacturing method thereof. The counterfeit ivory board comprises a core paper layer, wherein the upside and lower side of the core paper layer are combined with a face paper layer and a bottom paper layer respectively; and the outside surface of the core paper layer is dyed by dye to form counterfeiting patterns which dip-dye the inner part of the core paper layer. The manufacturing method comprises the following steps of: A, preparing materials; B, dewatering and manufacturing a piece of paper with pulp, wherein the pulp of the core paper layer, the bottom paper layer and the face paper layer are dewatered and manufactured into the core paper layer, the bottom paper layer and the face paper layer, and the core paper layer is dyed with the dye by spraying to form the counterfeiting patterns in a process of dewatering and manufacturing the core paper layer; and C, combining the core paper layer, the bottom paper layer and the face paper layer to form the counterfeiting ivory board. In the invention, by continuously improving the details and parts of the process and equipment, an optimized technical scheme is obtained in the invention, the quality of the counterfeiting patterns is relatively high, it is difficult to counterfeit the counterfeiting ivory board by general measures, mass industrial production is guaranteed, cost is lower, breakage is prevented and the counterfeiting effect is desirable.

Description

technical field [0001] The invention relates to an anti-counterfeiting white cardboard and a manufacturing method thereof, belonging to the field of anti-counterfeiting. Background technique [0002] The anti-counterfeiting technology that prior art is used for white cardboard has following several kinds: [0003] 1. Layered dyeing anti-counterfeiting method. This layered dyeing method is to add an anti-counterfeiting dyeing layer between the paper layers to form an anti-counterfeiting cardboard; the defects of this manufacturing method in the actual manufacturing process are: large dyeing range, pollution Spare parts and changing varieties need to be shut down for cleaning, waste products cannot be reused, and the anti-counterfeiting technology is simple; [0004] 2. Ming anti-counterfeiting method, the way of this kind of clear anti-counterfeiting is to set short fiber silk of different colors on the surface of the paper, such as the packaging box of Hongta brand cigarett...

AI Technical Summary

Problems solved by technology

[0003] 1. Layered dyeing anti-counterfeiting method. This layered dyeing method is to add an anti-counterfeiting dyeing layer between the paper layers to form an anti-counterfeiting cardboard; the defects of this manufacturing method in the actual manufacturing process are: large dyeing range, pollution Spare parts and changing varieties need to be shut down for cleaning, waste products cannot be reused, and the anti-counterfeiting technology is simple;

[0004] 2. Ming anti-counterfeiting method, the way of this kind of clear anti-counterfeiting is to set short fiber silk of different colors on the surface of the paper, such as the packaging box of Hongta brand cigarettes; its defects are: less anti-counterfeiting changes and high cost;

[0006] 4. The method of setting metal anti-counterfeiting threads in the paper, spraying metal fibers into the paper forming part, requires special equipment. Although the anti-counterfeiting effect is good, the equipment is complicated and the investment is large.

[0007] 5. The watermark anti-counterfeiting method is an anti-counterfeiting technology used earlier. A special watermark roller is installed on the screen, or a circular screen cage with a pattern is used to produce a watermark pattern. The disadvantage is that it is only suitable for low-quantity Paper types have certain limitations for high-quantity paper types; additional equipment and paper machine transformation are required, which is costly; and it is difficult to align and position during the production process, making it difficult to achieve accuracy

In this patent, the pigment is used as the anti-counterfeiting coating liquid, but the pigment is a kind of fine powder colored substance, which is insoluble in water, oil and solvent, and has the characteristics of hiding power and durability. The pigment only acts on the surface of the object, and cannot penetrate into the Inside the object, the color material layer sprayed out by the pigment is attached to the surface of the core paper layer, which is easy to imitate, and it also increases the difficulty of compounding the core paper layer and other surface layers, increasing the manufacturing cost

In addition, because the patent uses digital nozzles to directly spray the core paper layer on the upper part of the core paper layer, the dyeing range is large, because the pigment cannot penetrate and contains a certain amount of tiny particles, and the attached core paper layer is a part containing The semi-finished product with moisture has certain stretchability. During the process of moving with the papermaking net, the pattern sprayed by the pigment will be deformed due to the change of vehicle speed and the drying of the core paper layer. The anti-counterfeiting pattern is unstable and easy to contaminate the pattern. The part of the core paper layer loses the effect of anti-counterfeiting

Especially when spraying smaller patterns, such as patterns composed of thinner anti-counterfeiting strips and pinstripes, it is obviously difficult because the granular pigments are required to be formed independently on the core paper layer. When the thickness of the granular pigments is thin, the logo will not stand out, but When the thickness increases, it is difficult to ensure its independence and eliminate the existence of deviation due to the objective factors of preparation

Images