Printed TTI indicators
First Claim
Patent Images
1. A TTI indicator device comprising:
- a substrate layer selected from packaging materials comprising paper, cardboard, plastic foil, metal or glass;
agent A and agent B, a diffusion layer comprising film-forming substance(s) selected from carboxymethyl cellulose, micro-crystalline cellulose, methyl cellulose, hydroxypropylmethyl cellulose, starches, corn protein, soy protein, casein, glutein, cyclodextrins, cithosan, lecithin, phospholipide, hydro-gels, sol-gels, gum Arabic and agarose dissolved in a solvent or mixture of solvents, agent A being a pH-indicator and agent B being an organic acid selected from citric acid, tartaric acid, lactic acid, acetic acid and formic acid, anda) the agent A and agent B being adjacent to each other but not in direct contact with each other and the diffusion layer being on the agent A and agent B, orb) the agent A being on top of agent B and the diffusion layer being on the agent A, or the agent B being on top of the agent A and the diffusion layer being on the agent B;
orc) a blend of the agents A and B being on the substrate layer and the diffusion layer being on the blend.
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Abstract
The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicators. The printed TTI indicator is selectively activated at the time of packaging of a perishable product or alternatively at the time of opening of the package of a perishable product.
44 Citations
27 Claims
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1. A TTI indicator device comprising:
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a substrate layer selected from packaging materials comprising paper, cardboard, plastic foil, metal or glass;
agent A and agent B, a diffusion layer comprising film-forming substance(s) selected from carboxymethyl cellulose, micro-crystalline cellulose, methyl cellulose, hydroxypropylmethyl cellulose, starches, corn protein, soy protein, casein, glutein, cyclodextrins, cithosan, lecithin, phospholipide, hydro-gels, sol-gels, gum Arabic and agarose dissolved in a solvent or mixture of solvents, agent A being a pH-indicator and agent B being an organic acid selected from citric acid, tartaric acid, lactic acid, acetic acid and formic acid, anda) the agent A and agent B being adjacent to each other but not in direct contact with each other and the diffusion layer being on the agent A and agent B, or b) the agent A being on top of agent B and the diffusion layer being on the agent A, or the agent B being on top of the agent A and the diffusion layer being on the agent B;
orc) a blend of the agents A and B being on the substrate layer and the diffusion layer being on the blend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for the manufacture of a TTI indicator device, wherein at least one stripe or dot or a geometrical figure comprising agent A and at least one stripe or dot or a geometrical figure comprising agent B are printed on a substrate layer, whereon either or both agent A and agent B a diffusion layer is provided, the diffusion layer being printed, the substrate layer being selected from packaging materials comprising paper, cardboard, plastic foil, metal or glass, the diffusion layer comprising film-forming substance(s) selected from carboxymethyl cellulose, micro-crystalline cellulose, methyl cellulose, hydroxypropylmethyl cellulose, starches, corn protein, soy protein, casein, glutein, cyclodextrins, cithosan, lecithin, phospholipide, hydro-gels, sol-gels, gum Arabic and agarose, dissolved in a solvent or mixture of solvents, the agent A being pH-indicator and the agent B being an organic acid selected from citric acid, tartaric acid, lactic acid, acetic acid and formic acid;
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the at least one stripe or dot or a geometrical figure comprising the agent A and the at least one stripe or dot or a geometrical figure comprising the agent B are printed adjacent to each other but not in direct contact with each other;
orat least one stripe or dot or a geometrical figure comprising the agent A and at least one stripe or dot or a geometrical figure comprising the agent B, one of either agent A or agent B being arranged on top of the other, are printed on top of each other on the substrate layer;
orat least one stripe or dot or a geometrical figure comprising a blend of the agent A and the agent B is printed on the substrate layer. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification