Temperature Indicating Products

Temperature indicating products include labels, paints, crayons, or other markers that change color or shape when exposed to a certain temperature. Temperature indicating products are typically non-reversible and are designed for one-time use.

Temperature indicating products are used to monitor wear and friction that can arise when machinery parts are overheated, to monitor the operation of engines and valves for warranty protection, measuring surface temperatures on printed circuit boards (PCB), optimization of temperatures in processing applications, and quality control of equipment used in food preparation. A temperature indicator is an adhesive strip that can be secured to machinery or equipment and register temperature based on chemical reactions or liquid crystal indicators. A temperature indicating label may consist of a scale to show the exact temperature, or may simply produce a change in color that indicates an unsafe condition. Liquid crystal temperature indicating tape is typically a reversible type of temperature indicator.

Temperature indicating products include coatings, inks and paints that change color under specific temperature conditions. Temperature indicating products include the color changing inks used on packages of batteries. Color changing ink contains both a conductive ink and a thermochromic ink called leucodye. This temperature indicating ink is frequently used on microwave food products to indicate when food is heated to a proper temperature. Color changing paint works on a similar principle. Temperature indicating paint and coatings are used to gauge temperatures on equipment for petrochemical applications, critical electronic components, and circuit breakers.

Temperature indicating products include crayons or markers for marking surfaces. A temperature indicating crayon mark is designed to liquefy at a specified temperature. Temperature indicating crayons are typically sold as sets to accommodate a specific temperature range. Applications for temperature indicating crayons include the forging and heat treating of metals, fabrication, molding of rubbers and plastics, and laboratory heating and freezing applications.

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