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Low-temperature plasma mask sterilization and repair electret machine and method

A low-temperature plasma and plasma technology, which is applied in the directions of plasma, dryer, drying gas arrangement, etc., can solve the problems of inability to use non-woven materials, difficult to ensure uniform particle flow, complex shape of masks, etc. Electro-adsorption capacity, the effect of promoting high-energy electron emission and improving electron penetration

Pending Publication Date: 2020-07-10
NANJING SUMAN PLASMA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It cannot be used for the treatment of non-woven materials. The melt-blown non-woven fabric is very thin and sensitive to temperature. Once it is close to the electrode, the perforation will be damaged.
[0006] The mask itself is a non-uniform material, the used mask contains a lot of moisture, and the shape of the mask is relatively complicated. It is not suitable to use atmospheric pressure low-temperature plasma to directly treat it. The plasma highly active particles can be transported in the form of airflow and penetrate the mask for sterilization and disinfection. On the other hand, the used masks tend to have high humidity, the air resistance will increase, and there will be residual odors, which need to be properly dried and desorbed; the masks are large, and the discharge area of ​​​​atmospheric pressure plasma is usually small, which is difficult to guarantee Uniform particle flow

Method used

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  • Low-temperature plasma mask sterilization and repair electret machine and method
  • Low-temperature plasma mask sterilization and repair electret machine and method
  • Low-temperature plasma mask sterilization and repair electret machine and method

Examples

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Effect test

Embodiment 1

[0042] Combine figure 1 , figure 2 with Figure 5 In this embodiment, a low-temperature plasma mask sterilization and repair electret machine includes a housing 100 in which a power supply 200, a heating device, a blowing device, a plasma electret device 400, and a plasma electret device 400 are arranged in order from bottom to top. Mask fixing device 500, the power supply adopts DC power supply or AC power supply, combined Image 6 , Figure 7 , The AC power supply is preferably an AC pulse power supply. According to different characteristics of materials and different electret requirements, only need to adjust the power supply to reverse the output, which can realize the switching of positive / negative pulse high voltage and meet the material's requirements for electret polarity. Through power adjustment, the pulse width can be adjusted to freely control the effective electret time in a single cycle. Image 6 with Figure 7 The dotted line in the middle is a schematic diagram o...

Embodiment 2

[0049] Combine figure 1 with 2 The difference between this embodiment and embodiment 1 is:

[0050] The side wall of the casing 100 is provided with a heat dissipation port to dissipate heat from the power supply, preferably a heat dissipation grill 120, and a transformer radiator 230 is provided on the rear wall of the casing, which may be a fan structure to dissipate heat from the transformer. The top wall 110 of the housing 100 is provided with two grippers, preferably two, to facilitate the transportation of the low-temperature plasma mask sterilization repair machine.

[0051] The housing 100 is provided with a control panel 130 for timing and controlling the switching and power of the heating resistor 320, the fan 310, and the power supply 200, and the three parameters of processing time, processing temperature, and discharge power can be flexibly adjusted.

Embodiment 3

[0053] A low-temperature plasma mask sterilization and repair electret method of this embodiment,

[0054] Install the mask 600 to be processed on the mask holder 510, keep the mask in the mask holder 510 vertically placed above the plasma electrode wire array 410, and place it close to the plasma electrode wire array 410. The mask holder 510 can be used for one Preparation, or multiple preparations for one use, processing one batch at the same time prepares the rest to be processed, increasing the processing output;

[0055] For electret treatment, the plasma electrode wire array 411 is connected to the high voltage end of the power supply 200, and the casing 100 is connected to the low voltage end of the power supply 200. The power supply 200 uses a negative bias AC power supply. The plasma electrode wire array 411 is formed between the casing 100 Electric field, the mask 600 to be processed held by the mask clamp 510 is in an electric field, and electret processing is completed....

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Abstract

The invention discloses a low-temperature plasma mask sterilization and repair electret machine and method, and belongs to the technical field of medical mask sterilization and repair. The machine comprises a shell. A power supply, a blowing device, a plasma electret device and a mask fixing device are arranged in the shell. The mask fixing device is positioned above a dielectric barrier dischargedevice. An electric field generated by the plasma electret device is used for treating the surface of a to-be-treated mask, and the charged adsorption capacity of the mask can be improved. Electret treatment is performed on a non-woven fabric material, meanwhile, plasma active particles generated in the electric field are quickly adsorbed by the material, the sterilization effect can be continuously achieved after the plasma active particles are adsorbed, and the mask is free of peculiar smells. Efficient sterilization, disinfection and regeneration can be conducted on a mask used for a shorttime, mask supply tension is relieved, pollution is reduced, and meanwhile quick and portable treatment of a small number of small masks is achieved.

Description

Technical field [0001] The invention relates to the field of sterilization and restoration of medical masks, and more specifically, to an electret machine and method for sterilization and restoration of low-temperature plasma masks. Background technique [0002] In order to ensure the effective fight against the new coronavirus, people’s demand for medical masks is increasing. In order to relieve the pressure on the supply of masks, it is necessary to efficiently sterilize and regenerate the masks that have been used for a short period of time. Potential hazards to the environment and public health. [0003] For the sterilization of masks, although traditional chemical methods have a long time effect, there will be toxic chemical residues that are not conducive to secondary use. The process itself will also cause secondary pollution to the environment. Although there is no secondary pollution by the physical methods of ultraviolet irradiation, the ultraviolet penetration ability i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24A61L2/14F26B21/00
CPCH05H1/24A61L2/14F26B21/001
Inventor 万京林戴阳徐龙卞超万良淏
Owner NANJING SUMAN PLASMA TECH CO LTD
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