Magic particle feature recognition anti-counterfeiting card and preparation method thereof

Abstract

The invention belongs to the technical field of anti-counterfeiting marks, and particularly relates to a magic particle feature recognition anti-counterfeiting card and a preparation method thereof. The card comprises a local covering layer, a first plastic film layer, a local uncovering layer, a first adhesive layer, a random identification mark layer, a second printing layer and a base materiallayer which are sequentially arranged from top to bottom. The random identification mark layer comprises a first printing layer, a second plastic film layer, a random physical characteristic layer, athird plastic film layer, a color ink layer and a second adhesive layer which are sequentially arranged from top to bottom, information of the first printing layer comprises variable information, andthe random physical characteristic layer is composed of random physical characteristics and an adhesive; a corresponding relationship exists between the variable information and the random physical characteristics; the second printing layer information comprises variable information, and the variable information of the second printing layer and the variable information of the first printing layerhave a corresponding relation; the local uncovering layer is arranged above the variable information of the second printing layer; and the partial covering layer covers part or all of the variable information of the second printing layer. The anti-counterfeiting effect is good, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting marks, and in particular relates to a magic particle feature recognition anti-counterfeiting card and a preparation method thereof. Background technique [0002] With the advancement of science and technology, anti-counterfeiting means are becoming more and more advanced and diversified. In order to prevent their products from being counterfeited, various commodity manufacturers mostly use anti-counterfeiting marks to prevent counterfeiting of their products. [0003] Texture anti-counterfeiting technology is an anti-counterfeiting technology that uses the inherent texture characteristics of the material itself as an anti-counterfeiting identification mark. An important feature of using texture distribution feature patterns for anti-counterfeiting identification marks is that each piece is different. The basic principle is: randomly form a The texture distribution characteristic patte...

AI Technical Summary

Problems solved by technology

[0006]1) Since the particles have a certain thickness, the amount of glue combined with random physical characteristics is relatively small, and it is easy to cause the printing layer and the second plastic film layer to appear during the coating process. Scratches affect the surface effect of the logo, and in severe cases will interfere with the reading of the printed layer information; when the amount of glue combined with random physical features is relatively large, although the coating is relatively smooth and scratches are not easy to occur, it is squeezed or die-cut When it is used, it is easy to overflow the glue, and the logo anti-sticking phenomenon will appear in the production and processing process

[0007]2) When coating the particles, the particles are mixed in the glue. Since the density of the particles and the glue are inconsistent, it is easy to sink or float during the coating process, resulting in frequent Quality problems such as uneven coating, particles without physical characteristics or scratches caused by too many particles

At present, most of them use manual stirring to solve this problem, but there is a certain effect when directly coating after manual stirring, but after a period of time, this problem reappears, and this problem cannot be solved fundamentally

[0008]The anti-counterfeit card is thicker, and it is difficult to set the particles on-line coating, which is extremely difficult to realize. to verify authenticity

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