Packaging material for non-destructive detection of food quality, preparation method of packaging material, and detection method using packaging material
US12280929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2021 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Sep 14, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A packaging material for the non-destructive detection of food quality, a preparation method of the packaging material, and a detection method using the packaging material are provided. The packaging material includes a film material covering the outside of the food, where the film material includes a flexible base layer, an adhesive layer, a transparent conductive layer, and a nanostructured layer which are sequentially stacked from the outer side to the inner side. The flexible base layer is a polydimethylsiloxane (PDMS) layer. The adhesive layer is a polyimide (PI) layer. The transparent conductive layer is an indium tin oxide (ITO) layer. The nanostructured layer is a silver nanoparticles layer. The preparation method includes spin-coating and curing PI on PDMS, sputtering ITO, self-assembling silver nanoparticles on the transparent conductive layer, and etching according to a pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.