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Multifunctional food packaging tag, preparation method and application thereof

A multi-functional food and packaging labeling technology, applied in identification devices, stamps, instruments, etc., can solve problems such as hidden dangers of food, air leakage, loss of consumers and brand enterprises, and achieve good anti-counterfeiting effect.

Inactive Publication Date: 2019-05-10
金康康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many food packaging bags will leak due to quality problems or slight cuts during the handling process, making the food deteriorate in advance of the shelf life, but consumers are completely unknown, which is likely to cause food hazards
Especially in recent years, counterfeit and shoddy products have become increasingly rampant. Many lawbreakers use low-priced and substandard packaging bags to package food in counterfeit brand food bags, which has brought many losses to consumers and brand companies.

Method used

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  • Multifunctional food packaging tag, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for making a multifunctional food packaging label is as follows:

[0030] Prepare the chromogenic sheet, specifically as follows:

[0031] In the first step, ice crystals grow along a two-dimensional direction by using the ice template method. First, contact the rectangular flat copper tube with a low-temperature bath to cool down the copper tube; then add a precursor solution containing acrylamide, chemical cross-linking agent, photoinitiator and photochromic material ammonium molybdate, and the ice crystals will break the chain of the polymer during the growth process. Squeeze into loose cell walls;

[0032] Step 2, cross-linking is carried out by ultraviolet low-temperature radiation method, so that the pore walls obtained in step 1 are chemically combined, and after 5 hours of continuous light, a relatively stable pore wall is formed between the polymer chains;

[0033] In step three, freeze-drying is used to sublimate the ice crystals in step two, leavin...

Embodiment 2

[0042] A method for making a multifunctional food packaging label is as follows:

[0043] First set a two-dimensional code mask on the white color-developing film layer, and then perform ultraviolet light, so that a green two-dimensional code pattern is displayed on the white color-developing film, and finally place the color-developing film with the two-dimensional code pattern on the anti-ultraviolet light Between the film and the isolation film, the two-dimensional code pattern is close to the side of the anti-ultraviolet film, and the anti-ultraviolet film is arranged between the color-developing sheet layer and the visible window layer for packaging.

[0044] Further, the preparation method of the anti-ultraviolet film is to first mix titanium dioxide nanoparticles with absolute ethanol and then ultrasonically form a 0.2 g / mL titanium dioxide nanoparticle suspension under 200 Hz, and then add silane to the suspension , continue to ultrasonically mix at 200 Hz, react at room...

Embodiment 3

[0053] A method for making a multifunctional food label is as follows:

[0054] First set a two-dimensional code mask on the white color-developing film layer, and then perform ultraviolet light, so that a green two-dimensional code pattern is displayed on the white color-developing film, and finally place the color-developing film with the two-dimensional code pattern on the anti-ultraviolet light Between the film and the isolation film, the two-dimensional code pattern is close to the side of the anti-ultraviolet film, and the anti-ultraviolet film is arranged between the color-developing sheet layer and the visible window layer for packaging.

[0055] Further, the preparation method of the anti-ultraviolet film is to first mix titanium dioxide nanoparticles with absolute ethanol and then ultrasonically form a 0.2 g / mL titanium dioxide nanoparticle suspension under 200 Hz, and then add silane to the suspension , continue to ultrasonically mix at 200 Hz, react at room tempera...

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Abstract

The invention relates to a multifunctional food packaging tag, a preparation method and an application thereof. The tag comprises an isolating film layer, a developing sheet layer, an anti-ultravioletfilm and a visible window layer which are successively arranged. A two-dimensional code is displayed on the developing sheet layer on one side of the anti-ultraviolet film, and when the two dimensional code is in contact with oxygen-containing gas, the two dimensional code fades away gradually and disappears; the developing sheet layer is composed of a white polyacrylamide / ammonium molybdate compound aerogel sheet, wherein the polyacrylamide is of a porous sheet structure; the anti-ultraviolet film is composed of titanium dioxide nanoparticles and a polyethylene film, wherein the isolating film is a microporous polyethylene film. The food packaging multifunctional tag has the functions of preventing counterfeiting of two dimensional codes and identifying air leakage of food packaging bags, and can be also taken as a food drying agent to ensure dryness, freshness and genuineness of food, so that the tag has a huge application prospect in the fields of vacuum and inflated food packagingbags and the like.

Description

technical field [0001] The invention belongs to the field of smart labels, and in particular relates to a multifunctional food packaging label, a preparation method and an application thereof. technical background [0002] In order to ensure the freshness and shelf life of food, more and more food is packaged in vacuum or filled with nitrogen, the purpose is to isolate the air and prevent the food from being oxidized when exposed to the air, thereby prolonging the shelf life. At present, many food packaging bags will leak due to quality problems or slight cuts during transportation, which will cause food to deteriorate in advance of the shelf life, but consumers are completely unknown, which may cause food hazards. Especially in recent years, counterfeit and shoddy products have become increasingly rampant. Many lawbreakers use low-priced and substandard packaging bags to package food in counterfeit brand food bags, which has brought various losses to consumers and brand com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/02G09F3/03
Inventor 金康康
Owner 金康康
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