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time lapse indicating device

A technology of indicating device and time lapse, applied in measuring device, material analysis by observing the effect on chemical indicator, instrument, etc., can solve the problems of indicating device failure, time lapse, poor light resistance of reactive dyes, etc.

Active Publication Date: 2020-11-13
SHENZHEN NINE STARS PRINTING & PACKAGING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, reactive dyes are usually used as the indicating dyes in the existing indicating layer. Reactive dyes have the problem of poor light resistance, and they are prone to photodecomposition when exposed to sunlight or light for a long time, thus making the time lapse indicating device invalid.

Method used

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Embodiment Construction

[0036] The time lapse indicating device will be further described in detail below in conjunction with specific embodiments.

[0037] see figure 1 In one embodiment, the time lapse indicating device 100 for indicating time includes a base layer 110 , an indicating layer 120 , a substrate layer 130 , an adhesive layer 140 , an adhesive layer 150 , a release layer 160 and a shielding member 170 .

[0038] The base layer 110 is used to bear the indication layer 120 . The base layer 110 has good air tightness, which can prevent gas from passing through the base layer 110 . The material of the base layer 110 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or composite materials with the above materials compounded on the surface. In one of the embodiments, the base layer 110 is made of opaque material by printing or compounding opaque material. Of course, it should be noted that the material of the base layer 110 is not limited to the above materials, an...

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Abstract

The invention relates to a time lapse indicating device. The time lapse indicating device includes: a base layer; an indicating layer which is laminated to the surface of the base layer, wherein the indicating layer includes an indicating part, the color of the indicating part changes with the difference of the contact time with air, and the indicating part contains a chromotropic dye; a substrate layer covering the surface of the indicating layer, wherein the substrate layer is made of a transparent material, the substrate layer is in sealed connection with at least one of the base layer and the indicating layer to form an accommodation body capable of obstructing the air, and the indicating part is accommodated in the sealed space of the accommodation body; and a shielding member capable of shielding the indicating part of the indicating layer. The time lapse indicating device has strong light resistance.

Description

technical field [0001] The invention relates to a time lapse 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] A conventional time lapse indicating device for indicating time includes a base layer, an indicating layer formed on the surface of the base layer, and a substrate layer. The base layer and the base layer form a container for accommodating the indicating layer. When in use, the container is communic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/775G01N2021/7756
Inventor 刘永生郭欣尚要俊刘文恒熊梅英张雪翼
Owner SHENZHEN NINE STARS PRINTING & PACKAGING GRP