A kind of multi-layer color-changing anti-counterfeiting paper

Abstract

The invention discloses multilayer discolored anti-counterfeiting paper. The paper comprises paper sheets and a semitransparent anti-counterfeiting film with an image-text and characters, wherein the semitransparent anti-counterfeiting film has a color A; the image-text and the characters on the semitransparent anti-counterfeiting film have a color B which is in sharp contrast with the color A of the semitransparent anti-counterfeiting film; the semitransparent anti-counterfeiting film is put between the two paper sheets with different thickness during paper processing so as to form the anti-counterfeiting paper with the semitransparent anti-counterfeiting film. When the anti-counterfeiting paper with the semitransparent anti-counterfeiting film is observed by the eyes under natural light from one side relatively thinner than the other side, the image-test and the characters on the semitransparent anti-counterfeiting film have a color C; the image-test and the characters, which are observed by the eyes during light transmitting, on the semitransparent anti-counterfeiting film have a color D; the image-test and the characters, which are observed by the eyes during light transmitting from one side relatively thicker than the other side, have a color E. According to the multilayer discolored anti-counterfeiting paper, the semitransparent anti-counterfeiting film with the image-text and the characters is put between the two paper sheets with different thickness, the two sides of the paper are observed under natural light and in a light transmitting manner, and the image-test and the characters on the semitransparent anti-counterfeiting film can show three different colors, thereby increasing an anti-counterfeiting function of the paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a multi-layer color-changing anti-counterfeit paper. Background technique [0002] At present, the paper with anti-counterfeiting features, the features need to be exposed to reflect the color-changing function, but when it is embedded in the inner layer of the paper, the color-changing effect will be lost, and it may only be reflected in one color , and may not be able to see the graphics, characters, etc. on the original film. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned problems and provide a multi-layer color-changing anti-counterfeit paper in which the anti-counterfeit features in the anti-counterfeit paper can display multiple colors under different viewing conditions. [0004] The technical solution of the present invention is achieved in the following way: a multi-layer color-changing anti-counterfeiting pap...

AI Technical Summary

Problems solved by technology

[0002] At present, the paper with anti-counterfeiting features, the features need to be exposed to reflect the color-changing function, but when it is embedded in the inner layer of the paper, the color-changing effect will be lost, and it may only be reflected in one color , and may not be able to see the graphics, characters, etc. on the original film