Heating Tool Composition for Odor and Aroma Stability
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Solution Overview
Problem
Disposable body warmers generate unpleasant odors and changes in aroma due to their exothermic composition, which affects user experience and fragrance retention, especially during storage.
Innovation Solution
Incorporating a metal ion sequestrant into the exothermic composition of heating tools, along with an oxidizable metal powder, water-soluble salt, and an oxidation accelerator, housed in an air-permeable container bag, helps suppress unpleasant odors and aroma changes, while maintaining desired fragrances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fragrance is added to a heating tool that uses a disposable body warmer, then the desired aroma can be enhanced, but the aroma changes over time and unpleasant odors are generated
Solution Approach 1:
The patent introduces a metal ion sequestrant as an intermediary substance that mediates between the fragrance and the exothermic composition. This sequestrant binds metal ions that would otherwise catalyze degradation reactions, thereby protecting the fragrance from changing while allowing the heating function to operate normally.
Solution Approach 2:
The patent extracts the harmful metal ions from the exothermic composition by using a metal ion sequestrant to bind and remove them. This separation eliminates the source of unpleasant odors and aroma changes while preserving the essential heating functionality of the exothermic reaction.
2Ease of operation
If the heating tool is stored for a certain period before use, then portability and convenience are maintained, but unpleasant odors and aroma changes occur during storage
Solution Approach 1:
The patent applies preliminary action by incorporating the metal ion sequestrant into the exothermic composition before storage. This pre-treatment prevents the formation of unpleasant odors and aroma changes during the storage period, ensuring the fragrance remains stable from manufacture through storage to use.
Solution Approach 2:
The metal ion sequestrant acts as an intermediary that remains active during storage, continuously binding metal ions to prevent catalytic degradation of the fragrance. This intermediary protection ensures the heating tool maintains its sensory qualities throughout the storage period.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces unpleasant odors and aroma changes, ensuring a pleasant scent and effective heating performance even after storage, by using a metal ion sequestrant in the exothermic composition of heating tools.
Implementation Method 1
the use of a metal ion sequestrant in a heating tool can suppress the generation of unpleasant odors, as well as changes in aroma in the heating tool even after storage
Implementation Method 2
disposable body warmers use an exothermic composition that generates heat in the presence of air
Implementation Method 3
an exothermic composition that generates heat in the presence of air, and a heat-keeping effect is produced through this heat-generating mechanism
Implementation Method 4
JP2002-155273 discloses an exothermic composition comprising an exothermic material, a carbonaceous component, an oxidation promoter and water
Data Source
Figure 1~4
AI summary
The present invention provides an excellent heating tool in which the generation of unpleasant odors is suppressed. The present invention also provides an excellent heating tool in which changes in aroma are suppressed. The present invention further provides an excellent heating tool in which the generation of unpleasant odors and changes in aroma are suppressed even after storage. The present invention provides a method for suppressing the generation of unpleasant odors and changes in aroma in a heating tool. The present invention provides a heating tool comprising an exothermic composition containing a metal ion sequestrant, an oxidizable metal powder, a water-soluble salt, and water, wherein at least the exothermic composition is housed in an air-permeable container bag.