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

A technology of modal fiber and cellulose, which is applied in the field of preparation and anti-counterfeiting modal fiber, can solve problems such as the use of amino acid metal chelate anti-counterfeiting materials that have not been disclosed in the technology, and achieve effective encryption and traceability, high anti-counterfeiting strength, and timeliness long effect

Active Publication Date: 2021-03-16
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

However, there is currently no technical disclosure of the use of amino acid metal chelates in the preparation of anti-counterfeiting materials.

Method used

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  • Anti-counterfeiting modal fiber, preparation method and anti-counterfeiting method
  • Anti-counterfeiting modal fiber, preparation method and anti-counterfeiting method
  • Anti-counterfeiting modal fiber, preparation method and anti-counterfeiting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a kind of anti-counterfeiting modal fiber and its preparation method, its technical process is as follows figure 1 As shown, the specific steps are as follows:

[0048] (1) Firstly, the auxiliary agent JL-EBZ is added to the pulp stock solution, and JL-EBZ accounts for 0.6% of the mass fraction of the pulp stock solution. Then carry out alkalization treatment with sodium hydroxide, and the pulp stock solution after alkalization treatment is aged in the aging equipment, and the pulp stock solution processed by aging is processed by CS 2 Carrying out sulfonation treatment, adding the sulfonated cellulose sulfonate into sodium hydroxide solution for dissolution treatment to obtain spinning viscose. Among them, the specific conditions of alkalization treatment, aging treatment and sulfonation treatment are as follows:

[0049] The concentration of sodium hydroxide in the alkalization treatment is 18g / L, and it is treated at 15°C for 3 hours, and t...

Embodiment 2

[0054] This embodiment provides an anti-counterfeiting modal fiber and a preparation method thereof, the specific steps are as follows:

[0055] (1) Perform the same steps as step (1) in Example 1 to prepare spun viscose.

[0056] (2) The amino acid metal chelate is a chelate of tyrosine and copper sulfate pentahydrate. Mix tyrosine and copper sulfate pentahydrate in a molar ratio of 3:1. The pH value is 10 and the temperature is 60°C. The chelation reaction was carried out under certain conditions, and the reaction time was 30 minutes. The mixed solution obtained after the reaction is centrifuged, and the supernatant is taken to obtain an amino acid chelated copper solution.

[0057] (3) the amino acid chelated copper solution obtained in step (2) is added in the spinning viscose, and the amino acid chelated copper accounts for 0.8% of the mass fraction of the spinning viscose. The remaining steps are the same as step (3) in Embodiment 1.

[0058] (4) Perform the same step...

Embodiment 3

[0060] This embodiment provides an anti-counterfeiting modal fiber and a preparation method thereof, the specific steps are as follows:

[0061] (1) Perform the same steps as step (1) in Example 1 to prepare spun viscose.

[0062] (2) Prepare two kinds of amino acid metal chelates, mix the compound amino acid and ferric chloride in a molar ratio of 2:1, and carry out the chelation reaction at a pH value of 6 and a temperature of 25°C, and the reaction time is 30 minutes , the mixed solution obtained after the reaction is centrifuged, and the supernatant is taken to obtain an amino acid chelated iron solution; the compound amino acid is mixed with copper sulfate pentahydrate in a molar ratio of 3:1, and the pH value is 11, and the temperature is 60 Under the condition of ℃, carry out chelation reaction, the reaction time is 30 minutes, wherein compound amino acid is tyrosine, lysine, leucine, valine, and the molar ratio of four in order is 4:3:2:1, will The mixed solution obta...

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Abstract

The invention relates to a preparation method of an anti-counterfeiting modal fiber. The preparation method comprises the following steps of mixing a pulp stock solution with a cellulose catalyst, carrying out alkalization treatment, aging treatment and sulfonation treatment, and dissolving in an alkaline solution to obtain a treatment solution; uniformly mixing the treatment solution with a plurality of amino acid metal chelates, and carrying out filtering, defoaming and ripening to obtain a spinning stock solution; and uniformly mixing the spinning stock solution with a spinning bath additive, performing wet spinning, and performing drafting, defoaming, desulfurization, water washing and the like to obtain the anti-counterfeiting modal fiber, wherein the amino acid metal chelates accountfor 0.5%-1.5% of the mass fraction of the spinning stock solution. The amino acid metal chelates are adopted to perform anti-counterfeiting encryption on the modal fibers, the encryption area is themodal fiber spinning stock solution, and the fiber source can be tracked and identified by detecting metal elements and amino acid types.

Description

technical field [0001] The invention relates to an anti-counterfeit fiber, in particular to an anti-counterfeit modal fiber, a preparation method and an anti-counterfeit method. Background technique [0002] At present, there are many chemical fibers in the main base material of anti-counterfeiting fibers, and most of the known anti-counterfeiting fibers carry out anti-counterfeiting marks by the color of the fibers, and their sources cannot be traced. For example, in the Chinese patent CN207193675U, the anti-counterfeiting fiber has a specific color structure, and different specific color structures have specific color characteristics perceived by the human eye under sunlight. This type of anti-counterfeiting fiber is a sphere or ellipsoid, and is mostly used in paper materials. . In Chinese patent CN205557182U, anti-counterfeiting marks are carried out by setting color points on fibers to form specific color patterns, and its application range is also based on paper produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08G01N21/73G01N27/447G01N27/62
CPCD01F2/08G01N21/73G01N27/4473G01N27/62G07D7/02G07D7/06D01F2/10D01F1/10D01D1/02D01D5/06D10B2201/22D10B2505/00
Inventor 刘宇清李琴王钟王国和潘志娟
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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