METHOD FOR THE DETECTION OF NOXIOUS TEMPERATURE CHANGES IN THE PRESERVATION AND FROSTING OF PRODUCTS (FOODSTUFF) VIA ACCESSORIES INCORPORATED TO THE PACKAGE OR BODY THEREOF

摘要

Subject: accessory incorporated to products (e.g. foodstuff) for the detection and registering of the temperature changes responsible for the foodstuff decay.The temperature detection and registration method is based on the behaviour of metal memory alloys known as Shape Memory Alloys (SMA) the shape of which changes in correlation to temperature, or on the mechanical intervention of said alloys -throughout their change of shape- to other materials such as polymer plastics, TiO2 changing in colour when their geometrical state is changed (e.g. contraction-dilatation thereof). No external energy source is used but the exploitation of the temperature change energy, only.