JPH10334171A - Bar code - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable anyone to visually recognize the highest temperature at the time of preserving frozen food and to have a meal at ease by applying temperature-sensitive paint for changing colors at respective temperatures onto the surface of a bar code. SOLUTION: The temperature-sensitive coating material (irreversible type) 2 for changing the color at the respective temperatures is applied onto the surface of this bar code 1. That is, the temperature-sensitive coating material 2 for changing the color by the temperature, the temperature-sensitive coating material 2 to be changed to the respective colors corresponding to the respective temperatures, is applied onto the surface of the bar code 1. For instance, a temperature-sensitive coating material 2A for changing the color at -5 deg.C, a temperature-sensitive coating material 2B for changing the color at 0 deg.C, a temperature-sensitive coating material 2C for changing the color at 5 deg.C, a temperature-sensitive coating material 2D for changing the color at 10 deg.C and a temperature-sensitive coating material 2E for changing the color at 15 deg.C are applied in one line. In such a manner, by applying the temperature-sensitive coating material 2 (A-E) for changing the colors at the respective temperatures onto the surface of the bar code 1, the highest temperature to which the frozen food is exposed is recognized as history.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code which makes it possible for anyone to visually recognize the maximum temperature of frozen food during preservation, and to eat with confidence.

[0002]

BACKGROUND OF THE INVENTION In the present invention, in a wireless LAN system in a warehouse distribution center, a bar code attached to a product is read by a scanner to manage the date of manufacture of the product and the number of product names. . In this case, the frozen food may be exposed to the room temperature for a long time, such as when the frozen food is taken out of the freezer and packed.

[0003]

Conventionally, as described above, there are cases where frozen foods are taken out of the freezer and exposed to room temperature for a long time, such as when unpacking, and in such a situation, There were not many requests to know the maximum temperature to which frozen foods were exposed as a history.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by applying a temperature-sensitive paint (irreversible) whose color changes at each temperature to the surface of a bar code. It is.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. A temperature-sensitive coating material 2 whose color changes with temperature on the surface 1S of a bar code 1 will be described.
Is a temperature-sensitive paint that changes in color according to each temperature, for example, a temperature-sensitive paint 2 in which color changes at −5 ° C.
A, a temperature-sensitive paint 2B whose color changes at 0 ° C, a temperature-sensitive paint 2C whose color changes at 5 ° C, a temperature-sensitive paint 2D whose color changes at 10 ° C, and a color change at 15 ° C. It is applied in a line with the hot paint 2E.

[0006]

According to the present invention, as described above, a temperature-sensitive paint that changes color at each temperature is applied to the surface of a bar code, and the maximum temperature to which frozen food has been exposed is known as a history. Is now available.

[Brief description of the drawings]

FIG. 1 shows a plan view of one embodiment of the present invention.

[Explanation of symbols]

 1 Bar code 2 Thermal paint

Claims (1)

[Claims] 1. A bar code obtained by applying a temperature-sensitive paint whose color changes at each temperature to the surface of the bar code.