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Acid sensitive color change indicating device

A technology of color change indication and acid sensitivity, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. Issues such as the influence of the color change cycle of the indicating device

Active Publication Date: 2019-02-15
SHENZHEN NINE STARS PRINTING & PACKAGING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the air permeability speed of the protective layer will affect the discoloration period of the time indicating device, and it is difficult to adjust the air permeability speed of the protective layer

Method used

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  • Acid sensitive color change indicating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] The structure of the acid-sensitive color change indicating device of embodiment 1 is as follows: figure 1 As shown, it includes a base layer 110 , a substrate layer 120 , an indicator layer 130 , a medium layer 150 , a contrast layer 160 , a protection layer 170 , an adhesive layer 180 , a release layer 185 and an activation device 190 .

[0131] Wherein, the material of the base layer 110 is a composite material of ordinary PET / aluminum foil / heat-sealed PET, and the material of the base layer 120 is a composite material of ordinary PET / heat-sealed PET. When heat sealing, the heat-sealed PET of the base layer and the base material The layers of heat-sealed PET materials are in contact with each other, and are hot-melt bonded under the temperature and pressure of the heat-sealed plate. The indicating layer 130 includes an adsorbent and an indicating composition adsorbed on the adsorbent. The material of the adsorbent is a polytetrafluoroethylene microporous membrane wit...

Embodiment 2

[0138] The structure of the acid sensitive color change indicating device of embodiment 2 is as follows figure 1 As shown, it includes a base layer 110 , a substrate layer 120 , an indicator layer 130 , a medium layer 150 , a contrast layer 160 , a protection layer 170 , an adhesive layer 180 , a release layer 185 and an activation device 190 .

[0139] Wherein, the material of the base layer 110 is a composite material of ordinary PET / aluminum foil / heat-sealed PET, and the material of the base layer 120 is a composite material of ordinary PET / heat-sealed PET. When heat sealing, the heat-sealed PET of the base layer and the base material The layers of heat-sealed PET materials are in contact with each other, and are hot-melt bonded under the temperature and pressure of the heat-sealed plate. The indicating layer 130 includes an adsorbent and an indicating composition adsorbed on the adsorbent. The material of the adsorbent is a polytetrafluoroethylene microporous membrane with...

Embodiment 3

[0145] The structure of the acid-sensitive color change indicating device of embodiment 3 is as follows: figure 1 As shown, it includes a base layer 110 , a substrate layer 120 , an indicator layer 130 , a medium layer 150 , a contrast layer 160 , a protection layer 170 , an adhesive layer 180 , a release layer 185 and an activation device 190 .

[0146] Wherein, the material of the base layer 110 is ordinary PP / aluminum foil / heat-sealed CPP composite material, the material of the base layer 120 is ordinary PP / heat-sealed CPP composite material, and when heat-sealing, the heat-sealed CPP of the base layer and the base layer The heat-sealed CPP material is in contact, and is hot-melt and bonded under the temperature and pressure of the heat-sealed plate. The indicator layer 130 includes an adsorbent and an indicating composition adsorbed on the adsorbent. The material of the adsorbent is a glass fiber microporous membrane with a thickness of 2000 μm. The average pore size of th...

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Abstract

The invention relates to an acid-sensitive color change indicating device. The acid-sensitive color change indicating device comprises an indicating layer, a substrate layer, a base material layer and a starting device, wherein the indicating layer comprises an adsorption body and an indicating composition adsorbed to the adsorption body, the substrate layer is used for bearing the indicating layer, the indicating layer is stacked on the surface of the substrate layer, the base material layer covers the surface of the indicating layer, the base material layer is made of transparent materials, the base material layer and the edge of the substrate layer are in sealed connection to form a containing body capable of isolating gas, and the indicating layer is contained in the closed space of the containing body; the starting device is connected with the edge of the base material layer, and the starting device can drive the base material layer to move away from the substrate layer, so that the base material layer and the edge of the substrate layer are opened to form a gap for volatilizing volatile acid from the closed space. The acid-sensitive color change indicating device can conveniently adjust the color change period.

Description

technical field [0001] The invention relates to an acid sensitive color change indicating device. Background technique [0002] General products have a service life or shelf life, especially perishable products such as food, beverages and medicines are prone to spoilage during storage. In order to reduce the oxygen in the packaging and avoid deterioration in an oxygen environment, vacuum packaging or air conditioning are usually used. Packaging, and print the date of manufacture and shelf life on the outer packaging for people to judge whether it is expired. However, if the product package is opened or used, how to effectively record the time of opening or use is particularly important. [0003] The existing acid-sensitive color-changing indicating device includes a base layer, an indicating layer formed on the surface of the base layer, and a protective layer. The indicating layer includes an indicating part and a reference part. The indicating part is prepared by printing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/80
CPCG01N21/80
Inventor 刘永生郭欣刘文恒覃玲
Owner SHENZHEN NINE STARS PRINTING & PACKAGING GRP