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Patent Searching and Data


Title:
DISCOLORING SMART LABEL
Document Type and Number:
WIPO Patent Application WO/2018/137271
Kind Code:
A1
Abstract:
A smart label, for use in indicating the shelf life of a perishable product, comprising self-evolving discoloring indicator. The indicator comprises a metal nanomaterial, water-insoluble silver halide, a reducing agent, one or more cationic surfactants containing halide ions, water, and an optional acidity regulator. Extinction occurs in the metal nanomaterial within a wavelength range of 380 nm to 780 nm and elemental silver may epitaxially grow on the surface of the metal nanomaterial; the water-insoluble silver halide is selected from silver chloride, silver bromide, and silver iodide. The smart label may comprise an isolating and mixing device synchronize the start time of self-evolving discoloring reaction with the production time of a product. The smart label may comprise two or more self-evolving discoloring indicators having different specific components. Furthermore, a progress bar type smart label can be made by means of a particular arrangement order of a plurality of self-evolving discoloring indicators, so that the remaining shelf life of the product can be read more intuitively and accurately.

Inventors:
ZHANG, Chao (Room 2312, the 3th Floor of Building No.64 Zhongguancun North Street No.123, Haidian District, Beijing 8, 100738, CN)
TIAN, Zijian (ZHANG, ChaoRoom 2312, the 3th Floor of Building No.64, Zhongguancun North Street No.123, Haidian District, Beijing 4, 100084, CN)
GUO, Zhanyun (ZHANG, ChaoRoom 2312, the 3th Floor of Building No.64, Zhongguancun North Street No.123, Haidian District, Beijing 4, 100084, CN)
Application Number:
CN2017/075192
Publication Date:
August 02, 2018
Filing Date:
February 28, 2017
Export Citation:
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Assignee:
BEIJING LANTSAI TECH CO., LTD (ZHANG, ChaoRoom 2312, the 3th Floor of Building No.64, Zhongguancun North Street No.123, Haidian District, Beijing 4, 100084, CN)
International Classes:
G01N31/22; G01K11/12; G01N31/00
Foreign References:
CN102735796A2012-10-17
CN101495843A2009-07-29
CN101268159A2008-09-17
US3999946A1976-12-28
Attorney, Agent or Firm:
BEIJING HAN KUN LAW OFFICES (DUAN, ZhichaoRoom 906, Office Tower C1, Oriental Plaza, No.1 East Chang An Ave., Dongcheng District, Beijing 8, 100738, CN)
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