Time-temperature indicators activated with thermal transfer printing and methods for their production
申请人:NCR INTERNATIONAL INC.
公开号:EP1048476A1
公开(公告)日:2000-11-02
Time-temperature indicators (TTIs) which are generated by converting indicator compounds from an inactive state to an active state using a thermal transfer printing apparatus are described.
Time-temperature indicators activated with direct thermal printing and methods for their production
申请人:NCR INTERNATIONAL INC.
公开号:EP1048477A1
公开(公告)日:2000-11-02
Time-temperature indicators (TTIs) which are convertible from an inactive state to an active state by processing in a thermal imaging apparatus are described.
ROBUST, ULTRAVIOLET-PROTECTED AMBIENT CONDITION HISTORY INDICATOR AND METHOD OF MAKING SAME
申请人:TEMPTIME CORPORATION
公开号:US20130239874A1
公开(公告)日:2013-09-19
An optically readable ambient condition history indicator can have a substrate, an indicator agent on the substrate surface, and a transparent layer overlying the indicator agent. The indicator agent can be capable of changing appearance in response to exposure to an ambient condition and the transparent layer can be subject to exposure to environmental ultraviolet radiation. The indicator can also include a radiation-filtering adhesive layer overlying the indicator agent to secure the transparent layer to the indicator agent, which adhesive layer can include an adhesive and an ultraviolet radiation filter and can contact both the transparent layer and the indicator agent-bearing substrate. The radiation-filtering adhesive layer can protect the indicator agent from ultraviolet radiation transmitted through the transparent layer and provide a simple, robust construction that is easy to manufacture and resists delamination. The adhesive itself is also protected from ultraviolet radiation. A simplified manufacturing method is also disclosed.
A TIME-TEMPERATURE INDICATOR BASED ON INCREASED THERMAL REACTIVITY OF A DIACETYLENE UPON MELT RECRYSTALLIZATION
申请人:JP LABORATORIES
公开号:US20190137462A1
公开(公告)日:2019-05-09
This application relates to a time-temperature indicator based on increased thermal reactivity of a diacetylene upon melt recrystallization and a method of making it. A diacetylene is crystallized into a low thermal reactivity phase from a solvent system and converted into a higher thermal reactivity phase and low sensitivity to UV light by melt re-crystallization.