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Coating method and coating part

A technology of coating parts and coating chambers, which is applied in the field of coating methods and coating parts, can solve the problems of affecting the air permeability of masks and improving breathing resistance, etc., and achieves the effect of good hydrophobic effect and simple process

Inactive Publication Date: 2020-06-23
SHENZHEN AOLAN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although some existing mask treatment methods can meet the requirements of hydrophobicity, they may increase the breathing resistance, thereby affecting the air permeability of the mask.

Method used

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  • Coating method and coating part
  • Coating method and coating part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A coating method, comprising the steps of:

[0061] Arranging the nonwoven in the coating chamber 10;

[0062] Vacuumize the coating chamber 10 to reduce the pressure to below 15pa;

[0063] Feed tetrafluoromethane gas into the coating chamber 10, and keep the pressure at 20pa;

[0064] Apply radio frequency alternating current in the coating chamber 10 and keep it for 1 minute;

[0065] Turn off the radio frequency alternating current, stop feeding tetrafluoromethane gas, and vacuumize the coating chamber 10 so that the pressure is reduced to below 15pa;

[0066] Air is passed into the coating chamber 10 so that the pressure is close to the indoor atmospheric pressure, and the non-woven fabric is taken out.

[0067] The non-woven fabric is tested by the water spray test, and the test result shows that the water on the surface of the non-woven fabric forms spherical water droplets and cannot penetrate the non-woven fabric. It is proved that a hydrophobic layer is fo...

Embodiment 2

[0069] A coating method, comprising the steps of:

[0070] Ordinary dust masks are placed in the coating chamber 10;

[0071] Vacuumize the coating chamber 10 to reduce the pressure to below 15pa;

[0072] Feed octafluorocyclobutane gas into the coating chamber 10, and keep the pressure at 25pa;

[0073] Apply radio frequency alternating current in the coating chamber 10 and keep it for 1 minute;

[0074] Turn off the radio frequency alternating current, stop the introduction of octafluorocyclobutane gas, and vacuumize the coating chamber 10 to reduce the pressure to below 15 Pa;

[0075] Air is passed into the coating chamber 10 so that the pressure is close to the indoor atmospheric pressure, and the dustproof mask is taken out.

[0076] The dust mask was tested by the water spray test, and the test result showed that the water on the surface of the dust mask formed spherical water droplets, which could not pass through the dust mask. It is proved that by this coating me...

Embodiment 3

[0078] A coating method, comprising the steps of:

[0079] Ordinary dust masks are placed in the coating chamber 10;

[0080] Vacuumize the coating chamber 10 to reduce the pressure to below 15pa;

[0081] Pass oxygen and argon into the coating chamber 10 with a volume ratio of 1:1, and control the pressure in the coating chamber 10 to be 25pa, and apply radio frequency alternating current in the coating chamber 10, and keep it for 1 minute;

[0082] Vacuumize the coating chamber 10 to reduce the pressure to below 15 Pa;

[0083] Feed octafluorocyclobutane gas into the coating chamber 10, and keep the pressure at 25pa;

[0084] Apply radio frequency alternating current in the coating chamber 10 and keep it for 3 minutes;

[0085]Turn off the radio frequency alternating current, stop the introduction of octafluorocyclobutane gas, and vacuumize the coating chamber 10 to reduce the pressure to below 15 Pa;

[0086] Air is passed into the coating chamber 10 so that the pressur...

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Abstract

The present invention relates to a coating method. The method comprises the following steps of S100, placing a base body in a coating chamber, wherein the base body is prepared from an air permeable material with air vents; S200, vacuumizing the coating chamber to ensure that the pressure intensity is lowered to 15 pa or below; S300, introducing process gas into the coating chamber, and maintaining the pressure intensity to be 10-50 pa; S400, applying the radio frequency alternating current to the coating chamber, and maintaining the application for a period of time; S500, turning off the radio frequency alternating current, stopping introducing the process gas, and vacuumizing the coating chamber to ensure that the pressure intensity is reduced to 15 pa or below; and S600, introducing airinto the coating chamber to ensure that the pressure intensity is greater than or equal to 1 atmospheric pressure, and taking out the base body with a hydrophobic layer formed on the surface. A coating part comprises the base body prepared from the air permeable material with the air vents, and the hydrophobic layer attached to at least one surface of the base body and prepared from one or more of tetrafluoromethane, hexafluoropropylene, octafluorocyclobutane and paraxylene.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a coating method and a coating piece. Background technique [0002] The main difference between medical and non-medical masks in KN95 / N95 masks is that the outer surface of medical masks has undergone hydrophobic treatment. The medical surgical masks of GB19083-2010 and YY0469-2011 clearly put forward the requirement of "synthetic blood penetration", "surface Moisture resistance" parameter index, which clarifies the protective effect of medical protective masks on liquids such as blood and body fluids. In layman's terms, just like water droplets falling on the lotus leaf will roll down, the liquid cannot penetrate the surface of the mask, which can block the alcohol and blood (the blood often contains bacteria, viruses, etc.) that medical staff often touch, so as not to let the It permeates quickly; non-medical type KN95 / N95 masks do not undergo this special hydrophobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/02C08J7/12C23C14/12
CPCC08J7/123C23C14/12D06M10/025
Inventor 苏建华云洋
Owner SHENZHEN AOLAN TECH CO LTD
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