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Disinfection method and device for food outer packaging based on combination of jet flow and coating

A disinfection device and outer packaging technology, applied in the direction of packaging sterilization, etc., to reduce the amount of application, avoid food quality damage, and prevent residual pollution

Active Publication Date: 2022-03-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the outer packaging of food, low-temperature plasma is used as the main method, and chemical disinfectant is used as the auxiliary method to realize the disinfecting method without dead ends on the outer surface of the packaging. No related reports have been seen yet.

Method used

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  • Disinfection method and device for food outer packaging based on combination of jet flow and coating
  • Disinfection method and device for food outer packaging based on combination of jet flow and coating
  • Disinfection method and device for food outer packaging based on combination of jet flow and coating

Examples

Experimental program
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Effect test

Embodiment 1

[0112] Example 1 is Figure 4 , Figure 4B A low-temperature plasma jet food packaging straight-through sterilization device shown is composed of a packaging box transmission unit 2, an image and positioning acquisition unit 3, a chemical disinfectant coating unit 4, and an atmospheric pressure low-temperature plasma jet unit 5 constitute. The packing case transmission unit 2 selects the motor-driven roller to drive the belt transmission mode to transport the packing case, and the coating unit 4 of the chemical disinfectant selects the felt roller for use. Embodiment 1 adopts the disinfection method of low-temperature plasma jet combined with brushing chemical agent on the bottom surface, that is, uses the felt roller to brush the disinfectant on the lower part, realizes the disinfection on the bottom surface of the box, and kills the top surface and side of the rack cavity Multiple atmospheric-pressure low-temperature plasma jet integrated modules 5D are installed, and each...

Embodiment 2

[0116] The difference between embodiment 2 and embodiment 1 is:

[0117] The jet head adopts a ring-ring dielectric barrier structure, and the material of the dielectric barrier is a quartz tube (outer diameter 5mm, inner diameter 3mm). The high-voltage electrode and the low-voltage electrode are both made of perforated copper plates. The copper plate passes through and is fixed in the fluidic module. Each jet module contains 25 jet heads (5×5), and the distance between each jet head is 3mm. Using a high-voltage pulse power supply as the power supply, using argon as the carrier gas, the single-tube argon gas flow rate is 4L / min, the high-voltage electrode voltage is 20kV, the output power frequency is 10kHz, and the plasma jet length can be achieved at 30mm. After the cold chain food of different shapes passes through the sterilization equipment, the sterilization efficiency of pathogenic microorganisms can reach 100%.

Embodiment 3

[0119] Example 1 is Image 6 Shown is a low-temperature plasma jet food outer packaging folding type sterilization device, which consists of a packaging box transmission unit 2, an image and positioning acquisition unit 3, a chemical disinfectant coating unit 4, and an atmospheric pressure low-temperature plasma jet unit 5 , an ozone decomposition catalytic unit 9, a Y-axis atmospheric pressure low-temperature plasma jet unit 10, a gas purification unit 11 and a Y-axis conveyor belt transmission unit 12. The packing case transmission unit 2 selects the motor-driven roller to drive the belt transmission mode to transport the packing case, and the coating unit 4 of the chemical disinfectant selects the felt roller for use. Embodiment 3 adopts the sterilization method of low-temperature plasma jet combined with brushing chemical agent on the bottom surface, that is, uses the felt roller to brush the disinfectant on the lower part, realizes the sterilization on the bottom surface ...

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Abstract

The invention discloses a food outer packaging disinfection method and device based on the combination of jet flow and coating, which can be used for disinfecting pathogenic microorganisms on the outer surface of food packaging boxes, and can also be used for disinfecting pathogenic microorganisms on the outer surfaces of other packaging boxes. The disinfection method first realizes the sterilization of pathogenic microorganisms on the bottom surface of the packaging box by coating with a chemical disinfectant, and then realizes the sterilization of the top surface and sides of the packaging box by means of a low-temperature plasma jet at atmospheric pressure. Correspondingly, the disinfection device is composed of two parts: a chemical disinfection unit and a low-temperature plasma jet disinfection unit. Wherein, the chemical disinfection unit is composed of a transfer roller partially immersed in the chemical disinfection solution and a storage container for the disinfection solution. The low-temperature plasma jet disinfection unit is composed of a channel-type low-temperature plasma disinfection machine, a transmission mechanism, and an external high-voltage power supply and gas supply equipment.

Description

technical field [0001] The invention relates to the technical field of disinfection of food outer packaging, more particularly, a method and device for food outer packaging disinfection combined with a jet unit using atmospheric pressure low-temperature plasma and a coating unit using chemical disinfectant. Background technique [0002] For the sterilization of food outer packaging, it is necessary to avoid the impact on food quality and packaging appearance. The particularity of food excludes heat disinfecting methods such as dry heat and steam; improper or excessive use of chemical reagents (ethylene oxide, hydrogen peroxide) for disinfecting will cause problems such as waste liquid and residual secondary pollution, which will affect food quality; Ultraviolet radiation disinfecting at a short distance will produce obvious thermal effects, and the disinfecting performance at a long distance does not meet the requirements. Therefore, new disinfecting techniques and equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B55/10
CPCB65B55/10
Inventor 朱天乐许勇李想申芳霞王鹏孙也王春阳揭进琦
Owner BEIHANG UNIV
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