Ink composition for sensing carbon dioxside gas, carbon dioxside indicator using the same, package provided with the carbon dioxside indicator, and method for sensing pinhole using the same
First Claim
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1. An ink composition for sensing carbon dioxide gas, containing a pH indicator, binder, and solvent.
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Abstract
An ink composition for sensing carbon dioxide gas contains a pH indicator formed using a combination of two or more types of pH indicator components, binder, and solvent and allows easy visual observation of color changes of an indicating portion caused by the concentration of carbon dioxide gas. When the ink composition is applied to a carbon dioxide indicator and package, a pinhole and poor seal of a carbon-dioxide-ambient package are easily found.
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Citations
37 Claims
- 1. An ink composition for sensing carbon dioxide gas, containing a pH indicator, binder, and solvent.
- 7. A carbon dioxide indicator comprising a support and an indicating portion formed using an ink composition for sensing carbon dioxide gas, which contains a pH indicator, binder, and solvent.
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19. A package comprising:
- an outer package, inner atmosphere of which contains a carbon dioxide gas; and
a carbon dioxide indicator placed in said outer package, including a support and an indicating portion formed using an ink composition for sensing carbon dioxide gas, containing a pH indicator, binder, and solvent. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- an outer package, inner atmosphere of which contains a carbon dioxide gas; and
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36. A pinhole sensing method comprising:
- forming a package by placing, in a carbon-dioxide-impermeable outer package, inner atmosphere of which containing a carbon dioxide, a carbon dioxide sensing indicator having a support and an indicating portion formed using a carbon dioxide sensing ink composition containing a pH indicator, binder, and solvent; and
sensing the formation of a pinhole in the package in accordance with the color of the indicating portion. - View Dependent Claims (37)
- forming a package by placing, in a carbon-dioxide-impermeable outer package, inner atmosphere of which containing a carbon dioxide, a carbon dioxide sensing indicator having a support and an indicating portion formed using a carbon dioxide sensing ink composition containing a pH indicator, binder, and solvent; and
Specification