Visual label for indicating environment temperature change

Abstract

The invention relates to the field of label materials and provides a visual label for indicating environment temperature change. The visual label at least comprises a three-layer structure formed by filter paper A, a plastic partition layer and filter paper B in sequential arrangement, and the plastic partition layer can be drawn away from the filter paper A and the filter paper B. The filter paper A contains a macromolecular polymeric material H-[OCH2-CH2-]n-OH and pigment which are uniformly mixed and used for indicating environment temperature change, and the pigment is food colorant or chemical dye. The temperature-sensitive label is adaptable to environments of food cold chain logistics, biological product cold chain logistics, refrigeration houses, refrigerator trucks, supermarket refrigerators, high-temperature cables, substations, polar regions and the like with special requirements on the temperature. Compared with existing temperature identification techniques, the visual label for indicating environment temperature change has the advantages of simplicity, quickness, convenience in use, wide application, low cost and the like.

Description

technical field [0001] The invention belongs to the field of label materials, and in particular relates to a color-visible temperature change indicator label prepared by polymer materials and its application. Background technique [0002] The storage and transportation of fresh animal food, fruits and vegetables, biological products, special medicines and reagents have certain requirements on ambient temperature conditions. For example, in the process of long-distance transportation, logistics, storage and distribution of low-temperature products, it is inevitable to temporarily store them in refrigerators (boxes) provided by dry ice, ice packs, etc., but the following problems often affect the intuitiveness of the user's exposure to the ambient temperature determination or monitoring of: [0003] (1) At present, almost all warehouses of logistics companies in my country do not have cold storage, so when low-temperature items (drugs, biological products) reach end users (or...

AI Technical Summary

Problems solved by technology

[0003] (1) At present, almost all warehouses of logistics companies in my country do not have cold storage, so when low-temperature items (drugs, biological products) reach end users (or consumers), often the dry ice and ice packs have melted, and it is impossible to know whether the low-temperature items are exposed, or even expired

[0004] (2) During the transportation of cold and fresh food, if the temperature in the refrigerated vehicle does not meet the food quality requirements or the temperature in the refrigerated vehicle is out of control, after arriving at the destination, although the items are stored and sold in the refrigerated cabinet, consumers will not Not aware that the item has actually been exposed or deteriorated

[0005] (3) In special operating environments such as distribution boxes of power supply stations, cables often cause local overheating due to line failures, debugging or other reasons. If the overheating lasts too long, it may affect the life of the cables or cause safety accidents. Daily monitoring of road cable temperature

At present, although there are commercial thermochromic powders on the market, the disadvantages of this thermochromic powder are reversible

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