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Color-changeable intelligent label for indicating food freshness and preparation method thereof

A smart label, freshness technology, applied in film/sheet adhesive, identification device, ink, etc., can solve the problem of inconvenient observation of freshness, and achieve intuitive observation, excellent adhesion, and good printing effect. Effect

Pending Publication Date: 2021-10-26
SHENZHEN LICHANGSHI ADHESIVE PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the freshness of the existing food is particularly important. It is usually judged by observing the production date and shelf life of the food, and it is not convenient to observe the freshness. A color-changing indicator food freshness is proposed Degree of smart label and preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A color-changing smart label indicating the freshness of food, characterized in that it includes: glassine release backing paper; environmentally friendly coated paper; wherein, the environmentally friendly coated paper is coated with time-varying ink mixed with oxidized and discolored substances Specifically, the oxidized and discolored substance mixed in the time-varying ink is iron dioxide, which will be oxidized to form iron oxide when iron dioxide contacts air, that is, green iron dioxide is oxidized into red iron oxide; The adhesive is used to bond the glassine release backing paper and the environmentally friendly coated paper. Specifically, the adhesive is a high-viscosity acrylic environmental protection water glue, which is more convenient for sticking to the glassine release backing paper and the environmentally friendly coated paper.

[0030] With the time-varying ink set, the printing effect is good. According to the contact time with the air, an oxidative d...

Embodiment 2

[0034] A color-changing smart label indicating the freshness of food, characterized in that it includes: glassine release backing paper; environmentally friendly coated paper; wherein, the environmentally friendly coated paper is coated with time-varying ink mixed with oxidized and discolored substances Specifically, the oxidized and discolored substance mixed in the time-varying ink is iron dioxide, which will be oxidized to form iron oxide when iron dioxide contacts air, that is, green iron dioxide is oxidized into red iron oxide; The adhesive is used to bond the glassine release backing paper and the environmentally friendly coated paper. Specifically, the adhesive is a high-viscosity acrylic environmental protection water glue, which is more convenient for sticking to the glassine release backing paper and the environmentally friendly coated paper.

[0035] Through the set time-varying ink, according to the contact time with the air, an oxidative discoloration reaction occu...

Embodiment 3

[0045]A color-changing smart label indicating the freshness of food, characterized in that it includes: glassine release backing paper; environmentally friendly coated paper; wherein, the environmentally friendly coated paper is coated with time-varying ink mixed with oxidized and discolored substances Specifically, the oxidized and discolored substance mixed in the time-varying ink is iron dioxide, which will be oxidized to form iron oxide when iron dioxide contacts air, that is, green iron dioxide is oxidized into red iron oxide; The adhesive is used to bond the glassine release backing paper and the environmentally friendly coated paper. Specifically, the adhesive is a high-viscosity acrylic environmental protection water glue, which is more convenient for sticking to the glassine release backing paper and the environmentally friendly coated paper.

[0046] Through the set time-varying ink, according to the contact time with the air, an oxidative discoloration reaction occur...

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PUM

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Abstract

The invention discloses a color-changeable intelligent label for indicating food freshness and a preparation method thereof, which belong to the field of food label detection. The invention discloses a color-changeable intelligent label for indicating food freshness. The color-changeable intelligent label comprises glassine release body paper, environment-friendly coated paper and anadhesive. The environment-friendly coated paper is coated with time-varying printing ink mixed with an oxidized color-changeable substance; and the adhesive is used for bonding the glassine release body paper and the environment-friendly coated paper. The time-varying printing ink is arranged, the printing effect is good, according to the air contact time, an oxidation color-changeable reaction is generated, the label is changed from green to red within 1-5 days, the label can pass FDA verification and is free of pollution to food, the coated high-viscosity acrylic environment-friendly water glue has the ultrahigh viscosity effect and excellent attaching performance, the label is attached to a food package, the color and freshness reference index of the label can be changed due to time change, consumers can know the freshness condition of food as long as they pay attention to the color of the label, and observation is more visual.

Description

technical field [0001] The invention relates to the technical field of food labels, in particular to a color-changing intelligent label indicating food freshness and a preparation method thereof. Background technique [0002] Food labels refer to the words, graphics, symbols, and all descriptions on prepackaged food containers; [0003] With the continuous improvement of consumers' food safety awareness, food labels have become the focus of their attention. Through labels, we can learn about food information. When buying food, we often rely on the expiry date on the food package to grasp the freshness of the food; [0004] Especially for bread, fruits, vegetables, or foods that are not easy to observe internal rot, the freshness is particularly important. Usually, it is judged by observing the production date and shelf life of the food, which is not easy to observe the freshness. Contents of the invention [0005] The purpose of the present invention is to solve the probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/21C09D11/50C09D11/107C09D11/103C09D11/104C09D11/03G09F3/02
CPCC09J7/21C09D11/50C09D11/107C09D11/103C09D11/104C09D11/03G09F3/02C09J2203/334
Inventor 周荣杰黄伟
Owner SHENZHEN LICHANGSHI ADHESIVE PROD
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