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Label-shaped device adapted to be applied onto object for monitoring time trend of temperature of object, and method for monitoring

A time-trend, object-based technique for detecting temperature changes that delicate materials may experience, especially during storage and transport operations, addressing irreversible changes in color, irreversible loss of magnetic properties, etc.

Active Publication Date: 2019-09-27
UNIV DEGLI STUDI DI CAGLIARI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] - Magnetic labels, but this implies an irreversible loss of magnetic properties;
[0009] - organic label, but this implies an irreversible change in colour;

Method used

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  • Label-shaped device adapted to be applied onto object for monitoring time trend of temperature of object, and method for monitoring
  • Label-shaped device adapted to be applied onto object for monitoring time trend of temperature of object, and method for monitoring
  • Label-shaped device adapted to be applied onto object for monitoring time trend of temperature of object, and method for monitoring

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Embodiment Construction

[0029] The present invention relates to a tag-like device adapted to be applied to an object for monitoring the temporal trend of the temperature of the object. The object may be, for example, a package containing delicate material.

[0030] Such as figure 1 and 2 As shown, the label has a shape similar to a parallelepiped and comprises a support substrate 1 and a layer 2 of active material applied on the support.

[0031] Substrate materials can be of different types such as:

[0032] - flexible plastics (e.g. PET, polystyrene, cellophane, etc.);

[0033] -Paper;

[0034] - thin metal (eg aluminum foil).

[0035] The substrate may be applied to the object by means of an adhesive, or it may be part of the object to be monitored, for example part of a container.

[0036] The layer of active material can be applied to the substrate by means of a binder.

[0037] Surveillance is based on two inspection systems (indicators) created by means of labeled active materials. The...

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Abstract

A label-shaped device is described, which is adapted to be applied onto an object for monitoring the time trend of the temperature of the object, the device comprising: a support substrate (1) and a layer of active material (2) applied onto the support, the active material comprising solid solutions of oxyorthosilicates and / or barium halide salts, doped with rare earths and / or transition metals; the active material being adapted to provide: a first indicator, as immediate visual information associated with the progressive change in colour related to the threshold temperature based on the progressive variation in the reflectivity of the material as a function of time and temperature, and a second indicator, based on an optically stimulated luminescence response (OSL) related to the temperature / time condition to which the object has been subjected in a given period of time, starting from an initially absorbed dose of electromagnetic radiation having an energy exceeding a minimum value dependent on the difference between energetic levels of the molecular structure of the material.

Description

technical field [0001] The present invention relates to the technical field for detecting temperature changes that fine materials may be subjected to, especially during storage and transport operations, and in particular to a tag-shaped device adapted to be applied to an object for monitoring the temporal trend of the temperature of the object, and for The method of monitoring. Background technique [0002] In particular, there is considered a need to monitor the time trend of the temperature of objects such as food or medicines that are subject to spoilage, especially when they are enclosed in containers used for transport and storage operations. [0003] Every day, millions of crates of food are distributed to supermarkets, restaurants, hospitals, universities and other catering destinations. The efficient and healthy movement of such products from producer to consumer requires an elaborate, highly connected and coordinated distribution network. Distributors act as inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K3/04G01N31/22C09K11/77
CPCG01K3/04G01N31/229C09K11/7733C09K11/77742
Inventor P·C·里奇D·基里尤C·M·卡尔博纳罗
Owner UNIV DEGLI STUDI DI CAGLIARI
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