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Packaging material for nondestructive testing of quality of agricultural products and food, preparation method thereof and detection method

A technology for packaging materials and food quality, applied in chemical instruments and methods, packaging, wrapping paper, etc., can solve the problems of not considering spectral detection, unable to detect spectral detection, etc., to improve detection sensitivity, easy and fast operation, and ensure reliability Effect

Active Publication Date: 2021-10-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the requirements of spectral detection are not considered in the production of ordinary food packaging materials, and spectral detection cannot be carried out directly

Method used

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  • Packaging material for nondestructive testing of quality of agricultural products and food, preparation method thereof and detection method
  • Packaging material for nondestructive testing of quality of agricultural products and food, preparation method thereof and detection method
  • Packaging material for nondestructive testing of quality of agricultural products and food, preparation method thereof and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] (1) Fabrication of a flexible base layer;

[0063] Take a flat quartz or silicon wafer and place it in acetone, ethanol and water for ultrasonic cleaning for 5 minutes. After drying, spin-coat polydimethylsiloxane on the surface and heat to cure. Polydimethylsiloxane is used as a flexible substrate. bottom layer;

[0064] (2) The making of adhesive layer;

[0065] Polyimide is spin-coated on the surface of the flexible substrate and cured by heating. Polyimide is used as an adhesive for bonding packaging and transparent conductive layers;

[0066] (3) The making of transparent conductive layer;

[0067] 200nm indium tin oxide was vapor-deposited on the polyimide as a transparent conductive layer.

[0068] (4) Fabrication of nanostructure layer;

[0069] First synthesize 43nm nano-silver cubes; configure 0.1mg / mL PEG-SH chloroform solution; fully prepare the nano-silver cube solution, PEG-SH chloroform solution, and methanol solution at a volume ratio of 1:1:1 mix. ...

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Abstract

The invention discloses a preparation and detection method of a packaging material for non-destructive detection of agricultural product and food quality. The material comprises film materials that are packaged outside agricultural products or food, and a flexible substrate layer, a bonding layer, a transparent conducting layer and a nano-structure layer which are sequentially stacked from outside to inside, the flexible substrate layer is a polydimethylsiloxane layer, the bonding layer is a polyimide layer, the transparent conducting layer is an indium tin oxide layer, and the nano-structure layer is a silver nanoparticle layer; and the method is characterized by spin-coating polyimide on the polydimethylsiloxane film for curing, sputtering indium tin oxide, self-assembling silver nanoparticles on the transparent conductive layer, and etching, separating and taking down according to patterns. The packaging material disclosed by the invention can amplify a detection signal by utilizing the structure of the packaging material under the condition of complete packaging, so that the function of nondestructive detection of the quality of agricultural products and foods is realized; and the method can also be used for food package imaging, is simple, convenient and rapid to operate, and is suitable for various detection requirements.

Description

technical field [0001] The invention relates to a preparation and detection method of a packaging material used for non-destructive testing of agricultural products and food quality, in particular to the preparation of a packaging material that can amplify spectral signals and the quality inspection of food in the package when the food package is complete. method of detection. Background technique [0002] Food packaging materials refer to paper, bamboo, wood, metal, enamel, ceramics, plastic, rubber, natural fiber, chemical fiber, glass and other products used for packaging and containing food or food additives, and coatings that directly contact food or food additives. In order to maintain the quality of food, prevent food from deteriorating during storage, distribution, and sales, prevent microbial contamination, and prevent superchemical and physical changes, all kinds of food must be packaged. In order to meet the needs of food packaging, it varies according to the typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28B32B15/00B32B15/08B32B7/12B32B33/00B32B37/00B32B37/12G01N21/3586G01N21/65B65D65/40
CPCB32B27/283B32B15/00B32B15/08B32B7/12B32B33/00B32B37/00B32B37/12G01N21/3586G01N21/65B65D65/40B32B2307/40B32B2439/70B32B2037/243Y02W90/10G01N21/658C23C14/086C23C14/34C23C14/5873
Inventor 谢丽娟王英力刘湘江
Owner ZHEJIANG UNIV
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