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Reusable nanofiber mask, protective film, and preparation method and application thereof

A nanofiber and nanocellulose technology, applied in applications, protective clothing, clothing, etc., can solve the problem that nanofiber filter membranes and anti-smog masks cannot be reused, so as to improve the protection performance and service life, and achieve isolation , the effect of improving efficiency

Inactive Publication Date: 2020-06-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned nanofiber filter membrane and anti-smog mask cannot be reused

Method used

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  • Reusable nanofiber mask, protective film, and preparation method and application thereof
  • Reusable nanofiber mask, protective film, and preparation method and application thereof
  • Reusable nanofiber mask, protective film, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Preparation of mask protective film

[0057] In this example, a single-channel inclined wire paper machine is used for one-time copying, and the isolation layer and the support layer are prepared respectively. The two layers are laminated and hot-pressed to obtain a mask protective film with a double-layer structure. The specific preparation method is as follows:

[0058] Step a: According to the raw material formula, the raw materials of the isolation layer and the support layer are mixed with water respectively to obtain the slurry of the isolation layer and the support layer, the slurry concentration of the isolation layer is 0.0001wt%, and the slurry concentration of the support layer is 0.01wt%;

[0059] Step b: Separately load the slurry of the isolation layer and the support layer into the single-pass inclined wire paper machine, such as figure 1 As shown, a single-layer isolation layer and a support layer are obtained after one-time copying, pressing, drying, an...

Embodiment 2

[0061] Preparation of mask protective film

[0062] In this embodiment, a multi-channel inclined wire paper machine is used for one-time copying to realize the compounding of the isolation layer and the support layer, and obtain a mask protective film with a double-layer structure. The specific preparation method is as follows:

[0063] Step a: According to the raw material formula, the raw materials of the isolation layer and the support layer are mixed with water respectively to obtain the slurry of the isolation layer and the support layer, the slurry concentration of the isolation layer is 0.0026%, and the slurry concentration of the support layer is 0.055%;

[0064] Step b: Separately load the slurry of the isolation layer and the support layer into the inclined wire paper machine, such as figure 2 As shown, the isolation layer slurry is loaded into the first layer, and the support layer slurry is loaded into the second layer, so that the two layers of slurry are stacked...

Embodiment 3

[0066] Preparation of mask protective film

[0067] This embodiment is basically the same as Embodiment 2, except that the formulations of the isolation layer and the support layer are different, and the hot-pressing parameters are different.

[0068] The formula of embodiment 1-3, compound mode and hot pressing parameter, as shown in table 1 below

[0069] Table 1

[0070]

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Abstract

The invention provides a reusable nanofiber mask, a protective film and a preparation method and application thereof. The mask protective film is composed of an isolation layer and a supporting layer.The isolation layer is composed of nano polytetrafluoroethylene fibers or nano cellulose fibers modified by a silane coupling agent, the quantification is 5-8 gsm, the thickness is 5-10 microns, andthe pore diameter is 100-200 nanometers. The supporting layer is composed of polyethylene glycol terephthalate fibers and double-melting-point PET fibers, the quantification is 20-30 gsm, the thickness is 50-80 micrometers, and the pore diameter is 3-20 micrometers. The mask protective film is formed by an isolation layer and a supporting layer through papermaking of a multi-flow-channel inclinedwire paper machine, or is obtained by hot-pressing compounding of the isolation layer and the supporting layer. The mask protective film is used in cooperation with a general mask, the isolation layeris attached to the face, the filtering efficiency of the mask exceeds 95%, and droplets are isolated. The mask protective film can be repeatedly used for 5-10 times after being subjected to ultraviolet or dry heat sterilization.

Description

technical field [0001] The invention belongs to the fields of labor protection, medical hygiene and daily life, and specifically relates to a reusable nanofiber mask and protective film, a preparation method and application thereof. Background technique [0002] With the development of economic activities, environmental pollution is becoming more and more serious, smog pollution occurs frequently, people's awareness of hygiene is gradually improving, and the use of masks is gradually increasing. Commonly used masks include cotton masks, industrial masks, medical masks, etc. Cotton masks and industrial masks have poor protection, and medical masks have good protection, but due to direct contact with the face, they need to be replaced frequently, resulting in a great waste of resources. Especially during an outbreak, the one-time use of masks will exacerbate the strain on medical resources. [0003] CN206996064U discloses a nanofiber filter membrane and an anti-smog mask. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11A41D31/02A41D31/30
CPCA41D13/11A41D31/02A41D31/30
Inventor 王习文
Owner SOUTH CHINA UNIV OF TECH
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