Anti-counterfeiting Lyocell fiber, preparation method and anti-counterfeiting method

Abstract

The invention relates to a preparation method of an anti-counterfeiting Lyocell fiber. The method comprises the following steps of dissolving at least one amino acid metal chelate and cellulose pulp in an aqueous solution of a cellosolve to obtain a spinning solution, and then carrying out wet spinning by utilizing the spinning solution to obtain the anti-counterfeiting Lyocell fiber, wherein the amino acid metal chelate accounts for 0.2%-0.6% of the total mass of the anti-counterfeiting Lyocell fiber. The anti-counterfeiting Lyocell fiber disclosed by the invention is encrypted by utilizing the amino acid metal chelate, the process flow is simple and convenient, and the prepared Lyocell fiber can be provided with one or two passwords according to the ratios of metal ions to amino acids contained in the Lyocell fiber, so that a product prepared from the fiber has the advantages of memory tracking property, recognition function and high anti-counterfeiting degree.

Description

technical field [0001] The invention relates to an anti-counterfeit fiber, in particular to an anti-counterfeit lyocell fiber, a preparation method and an anti-counterfeit method. Background technique [0002] At present, the anti-counterfeiting label manufacturing equipment used by many anti-counterfeiting manufacturers in my country has a low level of intelligence and automation and poor technical performance. Common anti-counterfeiting fibers include heat-sensitive color-changing fibers, photosensitive color-changing fibers and fluorescent anti-counterfeiting fibers. Thermosensitive color-changing fiber is a fiber whose color changes with temperature; photosensitive color-changing fiber refers to a fiber that undergoes reversible changes under the irradiation of sunlight and ultraviolet light; fluorescent anti-counterfeiting fiber is also called visible fluorescent anti-counterfeiting fiber. If there is color, the authenticity is identified by detecting whether it emits f...

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN201120429635.5 provides a fiber anti-counterfeiting identification tape, which is easy to operate, but cannot carry out anti-counterfeiting tracking on fibers; Chinese patent CN201610442261.8 provides a preparation method of nano-fluorescence fiber anti-counterfeiting film, which does not affect the performance of the film And it is easy to identify, but its anti-counterfeiting effect is moderate; Chinese patent CN201310178819.2 makes the prepared paper products have anti-counterfeiting function by adding heat-sensitive discoloration fibers in the slurry; Chinese patent CN104894919A discloses a kind of anti-counterfeiting material. At least two light-sensitive color-changing particles are distributed at intervals in the length direction of the light-sensitive color-changing particles. These light-sensitive color-changing particles fluoresce under the action of various ultraviolet light, infrared light or sunlight, so as to achieve the effect of anti-counterfeiting

[0003] Amino acids and trace elements are essential nutrients for animals, plants, and even humans. Combining these two in a chelated manner can increase the absorption rate of trace elements. At present, amino acid metal chelates are mostly used in crop fertilizers, animal feed, etc. At present, there is no technical disclosure of the use of amino acid metal chelates in the preparation of anti-counterfeiting materials

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