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

A fiber and cellulose pulp technology, applied in the field of anti-counterfeit fibers, can solve the problems of inability to track anti-counterfeit fibers, moderate anti-counterfeiting effects, and no technical disclosure of the use of amino acid metal chelates. perceived effect

Active Publication Date: 2021-04-06
NANTONG TEXTILE & SILK IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Anti-counterfeiting Lyocell fiber, preparation method and anti-counterfeiting method
  • Anti-counterfeiting Lyocell fiber, preparation method and anti-counterfeiting method
  • Anti-counterfeiting Lyocell fiber, preparation method and anti-counterfeiting method

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preparation example Construction

[0032] Such as figure 1 Shown, the preparation method of anti-counterfeit lyocell fiber of the present invention comprises the following steps:

[0033] (1) Provide amino acid metal chelate: take the metal compound to be chelated and the ligand amino acid respectively, add deionized water to mix, fully stir to make a suspension, adjust the pH to neutral or slightly alkaline, pulverize, homogenize Quality, filtration to obtain a suspension with a solid particle size less than 30 microns; the suspension is injected into a high-pressure liquid nanomill with a high-pressure pump, the pressure is 90-130MPa, the feed rate is 1.6-5 liters per minute, and the reaction is 0.5-1.5 Hours, obtained Amino acid chelate clear night. After spray drying, the finished product of amino acid metal chelate is obtained. Among them, the amino acid can be lysine, tryptophan, phenylalanine, leucine, isoleucine, threonine, methionine, valine, aspartic acid, glutamic acid, glycine or a combination th...

Embodiment 1

[0042] The preparation method of anti-counterfeiting lyocell fiber is as follows:

[0043] (1) Preparation of anti-counterfeiting tracking agent: Ca(OH) 2 , Mg(OH) 2 , Zn(OH) 2 Mix with aspartic amino acid respectively, according to the above sequence, the molar ratio of the three hydroxides is 1:2:3, and each metal compound and amino acid are dosed according to the molar ratio of 1:2. According to the mass ratio of the above-mentioned reactant to water as 25:75, stir fully after mixing, adjust the pH of the mixed solution to 7.8, and process through colloid milling and homogenizer to fully dissolve and diffuse the reactant, and further filter the suspension to make The solid particles in the suspension are less than 30 microns, and then the suspension is injected into a high-pressure liquid nanomill, the pressure is controlled at 100 MPa, the feed rate is 3 liters per minute, and the reaction is performed for one hour to obtain aspartic acid chelated calcium and aspartic amin...

Embodiment 2

[0047] Prepare anti-counterfeit lyocell fibers according to the method of Example 1, the difference is that in step (1), three kinds of amino acids are selected to be mixed with different metal compounds, specifically Ca(OH) 2 Mixed with Lysine, Mg(OH) 2 Mixed with Isoleucine, Zn(OH) 2 It is mixed with threonine, and each metal compound and the corresponding ligand amino acid are dosed in a molar ratio of 2:3. The amino acid metal chelate used in step (2) is changed accordingly.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/10D01D5/06D02G3/44D03D15/00D04B1/14D04B21/00
CPCD01F2/10D01D5/06D02G3/44D03D15/00D04B1/14D04B21/00C08L1/02D01F2/00D01F1/10C08K5/0091C08K5/175C08L2203/12C08L2205/16D10B2201/24D10B2401/063D10B2505/00
Inventor 刘宇清何宇王钟王国和潘志娟
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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