TEMPERATURE-SENSITIVE LABEL

To solve the problem that in a temperature-sensitive label for irreversibly displaying the fact of excess of preset temperature by color development using melting phenomenon due to heat of wax or a chemical substance, there is a case where insufficient color development occurs by various causes and there is a case where the insufficient color development is mistook as normal color development due to excess of the preset temperature to misunderstand as the excess of the preset temperature.SOLUTION: In a temperature-sensitive label, provide is a belt like coloring part having substantially the same a color tone as a color tone when color development occurs at a side edge of a surface side of the temperature-sensitive label having a strip-like shape for irreversibly displaying the fact of excess of preset temperature through color development when exceeding the preset temperature, by using melting phenomenon of various chemical substances which is melted by heat or wax mainly including straight chain hydrocarbon.SELECTED DRAWING: Figure 4 【課題】 ワックスや化学物質の熱による融解現象を利用した発色により、設定温度超過の事実を不可逆的に表示する感温ラベルにおいては、種々の原因により不完全な発色がおこる場合があり、これを設定温度超過による正規の発色と見誤り、設定温度超過と誤認してしまう場合があった。【解決手段】直鎖状炭化水素を主体とするワックスや熱によって融解する各種化学物質の融解現象を利用して、設定温度を超えたときに発色して設定温度超過の事実を不可逆的に表示する短冊状をなした感温ラベルの表面側側縁に、発色したときとほぼ同じ色相を有する帯状の着色部分を設けた。【選択図】 図４