Title:
A SYSTEM FOR QUALITY MONITORING OF TEMPERATURE SENSITIVE PRODUCT AND METHOD FOR MANUFACTURING THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/224000
Kind Code:
A1
Abstract:
A time-temperature indicator (TTI) system for temperature sensitive products and methods for manufacturing thereof. In one embodiment, an activatable TTI system is provided, comprising a multilayer assembly made of at least three functional membrane layers comprising a variable-thickness layer, a time-dependent permeability membrane layer and an indicator layer, where said variable-thickness layer has a variable thickness along the surface in contact with incoming air; said time-dependent permeability membrane has pores for ceasing further air flow into the system when it is saturated with water from the incoming air; and said indicator layer contains indicating dye which changes in color shading according to ambient temperature. In another embodiment, a TTI system which is free from activation or preconditioning is provided, comprising an indicator strip, a sealing strip, a reservoir of reactant, and a driver, which are assembled on a substrate attached to or on the products. An indicating dye contained in the indicator strip is reactive to the reactant from the reservoir and the reactant is released according to the ambient temperature change over time, in order to indicate the change in ambient temperature by the change in the indicating dye color.
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Inventors:
TAN NOEL PETER BENGZON (CN)
CHEU CATHY KWAN WING (CN)
HE MISSY MINSI (CN)
LI WEI (CN)
CHRISTIANTO JONATHAN (CN)
LAU YEUK TIN (CN)
SHI XIN (CN)
CHEU CATHY KWAN WING (CN)
HE MISSY MINSI (CN)
LI WEI (CN)
CHRISTIANTO JONATHAN (CN)
LAU YEUK TIN (CN)
SHI XIN (CN)
Application Number:
PCT/CN2018/090232
Publication Date:
December 13, 2018
Filing Date:
June 07, 2018
Export Citation:
Assignee:
NANO & ADVANCED MATERIALS INST LTD (CN)
International Classes:
G01K11/12; G01N31/00
Domestic Patent References:
| WO2004077001A1 | 2004-09-10 |
Foreign References:
| US20160349225A1 | 2016-12-01 | |||
| US20140119402A1 | 2014-05-01 | |||
| CN101718597A | 2010-06-02 | |||
| CN106568529A | 2017-04-19 | |||
| CN204064505U | 2014-12-31 |
Attorney, Agent or Firm:
DHC IP ATTORNEYS (CN)
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