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Anticorrosion label based on 4D printing

A 3D printing and labeling technology, applied in the field of labels, can solve the problems of inability to adapt to the needs of diversification and customization, limited application of food preservatives, and inability to protect products, achieve strong customizable characteristics, and avoid harm to products or humans. , the effect of reducing the cost of replacement and update

Active Publication Date: 2021-11-12
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4D printing technology has attracted people's attention since it was first proposed in 2013. It is a promising emerging technology. Because of its self-assembly, self-adaptation and self-repair characteristics, it greatly simplifies the manufacturing process. In many fields such as biomedicine, smart home, textiles, electronics, etc., but the application of food preservation is still very limited
[0004] At present, the existing new labels are mostly used in clothing, fabrics and other products that only come into contact with the human body surface, and are rarely used in fresh fruits and vegetables and other foods. They can only prevent consumers from being invaded by bacteria, and cannot protect the product itself. quality protection
At the same time, the single shape of the label produced by the fixed production line cannot meet today's growing demand for diversification and customization

Method used

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  • Anticorrosion label based on 4D printing
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  • Anticorrosion label based on 4D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Through 3D printing, an anti-corrosion label is prepared, including an upper layer, a middle layer and a lower layer. The upper layer is polytetrafluoroethylene; the middle layer is flour and yeast with a mass ratio of 100:1; the lower layer is permeable PVC.

[0033] Place 140 grams of cherry tomatoes in two film bags respectively, put the above-mentioned antiseptic label in bag A, keep it in bag B, seal the mouth of the bag tightly, store it at room temperature, observe once every 4 days, and test results As shown in Table 1.

[0034] The implementation principle of this embodiment is: the moisture produced by cherry tomato corruption and respiration passes through the lower layer of permeable medical dressing, activates the saccharomyces in the middle layer of dough to ferment (measured through one hour of fermentation, the average per gram of yeast per hour Gas production 319mL), the gas produced permeates the upper waterproof and breathable membrane, thereby incre...

Embodiment 2

[0038] Through 3D printing, an anti-corrosion label is prepared, including an upper layer, a middle layer and a lower layer. The upper layer is polytetrafluoroethylene; the middle layer is flour and yeast with a mass ratio of 100:1; the lower layer is permeable PVC.

[0039] Take the red Fuji apple as the experimental material, remove the core of the apple, peel it, cut it into small pieces with a side length of 1 cm, place 150 grams of apple pieces in two film bags respectively, put the present invention in the A bag, and put the B bag Keep it in the middle, seal the mouth of the bag tightly, store it in a refrigerator at 5°C, and observe it every 3 days. The test results are shown in Table 2.

[0040] The implementation principle of this embodiment is: the moisture produced by the corruption and respiration on the surface of the apple piece passes through the lower layer of permeable medical dressing, and activates the yeast in the middle layer of dough to ferment (measured ...

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PUM

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Abstract

The invention discloses an anti-corrosion label based on 4D printing. The anti-corrosion label comprises an upper layer, a middle layer and a lower layer. The upper layer is made of a watertight membrane material; the middle layer is a sugar-containing organic material carrying aerogenic flora; and the lower layer is made of a water-permeable membrane material. According to the anti-corrosion label, the anti-corrosion function is added on the basis of the basic function of the label, the decay process of fresh fruits and vegetables can be delayed, the shelf life is prolonged, in addition, the 3D printing technology is used for each layer, the appearance of the label can be customized, and the updating cost of a production line is reduced. According to the label printed through the method, fourth-dimension change is achieved on the basis of 3D printing, the CO2 concentration in a packaging bag can be adjusted within a short time according to humidity change, and food decay is delayed.

Description

technical field [0001] The invention relates to the technical field of labels, in particular to a 4D printing-based anticorrosion label. Background technique [0002] A label is a tool used to find and locate objects or to indicate the object classification or content of a product. In the traditional printing industry, labels are mostly printed materials used to identify products and related instructions, but at present, product labels have increasingly assumed the role of publicity and reminder information. For example, in April 2020, Shanghai scholars proposed An antibacterial label (the patent notification number is CN210429064U), which prevents the growth of bacteria inside the label body by inserting antibacterial thorns into the label body, and the nano-antibacterial material layer achieves the purpose of antibacterial by destroying the protein or tissue structure modification of bacteria or viruses . [0003] 4D printing technology, also known as variable characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/30B32B9/00B32B9/04A23B7/148G09F3/02B33Y80/00
CPCB32B27/322B32B27/304B32B9/00B32B9/045A23B7/148G09F3/02B33Y80/00B32B2519/00G09F2003/0257Y02W90/10
Inventor 刘耀文苟韬罗典陈嵘嵘李研李京缦包凯文秦文张清
Owner SICHUAN AGRI UNIV