CN114170889A

CN114170889A - Expansion type overtemperature prompt label

Info

Publication number: CN114170889A
Application number: CN202111649635.0A
Authority: CN
Inventors: 仝建朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-03-11

Abstract

The invention discloses an over-temperature prompt label capable of recording whether a frozen article exceeds a limited temperature during storage and transportation. Can be used for freezing food, some biological products needing to be frozen for storage and transportation, blood products and the like. The structure is a transparent plastic cavity, which comprises an expansion display area, a staining reagent area and a sealing grease isolating layer in the middle (figure 1). The swelling display area is cylindrical, and the dyeing reagent area is in a straight line shape. The swelling display area is filled with water-based solution, and the dyeing reagent area is filled with dyeing reagent. The invention has the characteristics of simple structure, safety, reliability, automatic triggering without human intervention and extremely low production and use cost.

Description

Expansion type overtemperature prompt label

Technical Field

The invention relates to the technical field of temperature monitoring, in particular to an overtemperature prompt label.

Background

Frozen food, parts of vaccines and other frozen products need to be kept in a certain low temperature range during transportation and storage. After leaving the factory, the products can reach the hands of consumers through a series of links such as storage and transportation, each link is a potential risk point, and the severe consequences such as the freshness of frozen products, the reduction of vaccines, failure and the like can be caused by the exceeding of the temperature of any link in a cold chain link. However, it is unknown whether the goods are thawed and frozen again during storage and transportation. In order to overcome the defect, the invention provides an economical and applicable over-temperature prompting cold chain label which can be packaged together with a product, so that the problem of over-temperature warning in the process of storage and transportation of frozen products is fundamentally solved, and whether the condition of temperature which does not meet the requirement exists in the previous storage and transportation link of the goods can be conveniently and visually identified through the color change of the label. Thereby judging whether the food is fresh or whether the vaccine medicine is safe and effective. And the responsibility boundary can be cleared for each link of storage, logistics and the like.

Disclosure of Invention

The invention aims to provide an over-temperature prompt label which is simple and reliable in structure and low in cost. The label can be packaged together with the product, can also be attached to the outer package of the frozen commodity or the product, and can conveniently and visually identify whether the commodity has an overtemperature phenomenon in the previous storage and transportation process through the color change of the label, thereby judging whether the frozen food is fresh and whether the vaccine medicine is safe and effective.

The technical scheme adopted by the invention is as follows: the structure is that a transparent plastic closed cavity body with two closed ends is made of low-temperature resistant materials, one end is cylindrical, the other end is in a straight line shape, and the joint of the cylindrical shape and the straight line shape is separated by sealing ester (as shown in figure 1). The cylindrical cavity is an expansion display area, and the linear cavity is a dyeing reagent area. The expansion display area is filled with expansion display liquid, and the dyeing reagent area is filled with dyeing reagent.

The expansion display liquid can be water-based solution such as sodium chloride, calcium chloride and the like, and other solutions can be selected according to actual needs. The dyeing agent can be water-soluble pigment or agent with freezing temperature far lower than that of the used label swelling liquid.

The basic working principle of the invention is as follows: the water solution with different substances and different concentrations has different freezing points, and the water solution can expand in volume when being cooled and solidified and reduce in volume when being melted again when being heated so as to mix and flow the solution.

The specific principle is as follows: after ambient temperature reached or was less than the freezing point of inflation display fluid (being the required temperature of cold chain article save), the inflation display fluid can solidify and cause the volume increase, promotes partly sealed fat and inflation fluid and gets into the dyeing reagent district, and the dyeing reagent district is the platykurtic, receives pressure can be propped up, is used for holding the volume that the inflation fluid was increased when solidifying, and the suggestion label of overtemperature gets into the trigger state this moment. When the temperature rises to exceed the freezing point of the label expansion liquid (namely exceed the temperature range required by cold chain articles), the melting volume of the expansion liquid is reduced to form negative pressure, and because the fluidity of the dyeing reagent is far better than that of the sealing grease, the dyeing reagent breaks through the sealing grease to enter the expansion display area to be mixed with the expansion display liquid under the action of the negative pressure, so that the expansion display liquid changes color. (Table 1) is a comparison table of freezing points of sodium chloride and calcium chloride under different concentrations, and proper solutions and concentrations can be selected according to actual needs. Other solutions may also be selected as desired. According to the characteristics that water solutions of different substances with different concentrations have different freezing points in the table 1, only a proper water solution needs to be filled in the cavity of the expansion display area, and the over-temperature prompt label with any temperature from zero to 55 ℃ below zero can be produced.

The working process comprises the following steps: when the frozen product is produced and packaged, the frozen product and the overtemperature prompting label which meets the requirements of the product are packaged together, the product enters a freezing link after being packaged, the overtemperature prompting label is frozen together, and the expansion shows that when the water solution in the cavity is solidified by condensation, the volume of water ice increases, the pressure increases, and the ester sealant is pushed to move to the dyeing reagent area and enter the dyeing reagent area. The dyeing reagent area is subjected to pressure uplifting, the label is automatically triggered, and the label starts to work and enters a monitoring state. When the temperature range of the label is exceeded in the transportation and storage processes of the article, the melting volume of the solution at the expansion display end is reduced to form negative pressure, and the dyeing reagent breaks through the partition layer under the action of the negative pressure of the expansion display area and is mixed with the expansion display liquid to enable the expansion display end to change color. The product is over-temperature, and the label is still in a color-changing state and can not be reversed even if the product is returned to the required temperature again.

Drawings

In the drawings:

FIG. 1 is a schematic structural diagram of an overtemperature warning label before triggering;

FIG. 2 is a schematic diagram of the expansion display fluid freezing volume expansion pushing the sealing grease into the staining reagent zone when the over-temperature indicating label is triggered to freeze;

FIG. 3 is a schematic diagram showing the entry of a staining reagent into a display area when the temperature of the label exceeds the standard, which is indicated by an over-temperature;

table 1 is a table comparing the coagulation and concentration of the aqueous solutions of calcium chloride and sodium chloride salts;

TABLE 1

Claims

1. Expansion type overtemperature prompt label, its core characterized in that includes: and the other end of the transparent plastic cavity is a dyeing reagent end.

2. The over-temperature prompting label is characterized in that the over-temperature prompting label is manufactured by utilizing the principle that the volume expands when an aqueous solution is solidified and the volume shrinks when the aqueous solution is melted.

3. The over-temperature prompting label according to claim 1, wherein after the over-temperature prompting label is packed together with a protected commodity and enters a freezing workshop, the water solution in the expansion display end reaches a freezing point and is solidified, the volume of the water solution expands to enter a dyeing reagent area, and the triggering and starting of the over-temperature prompting label are automatically completed without manual intervention.

4. The over-temperature prompting label of claim 1, wherein different water solutions with different concentrations have different freezing points, so as to realize over-temperature prompting labels with different temperature requirements.

5. The over-temperature prompting label of claim 1, wherein the dyeing reagent end is flat and is used for absorbing the part of the expansion display end which expands when the water solution reaches the freezing point and is solidified after being cooled and expanded through the bulge of the flat cavity.

6. The over-temperature prompting label of claim 1, wherein the swelling display liquid and the dyeing reagent can be selected from different solutions and reagents meeting the actual requirements, including but not limited to sodium chloride and calcium chloride.

7. The over-temperature prompting label of claim 1, which is constructed in a basic structure of a working principle, and can be made into other shapes according to the basic principle in production.

8. The over-temperature prompting label of claim 1, which is structured as a core structure, and has a protective cover for protecting the label and reducing the sensitivity of the label according to the needs of different articles.