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EP-4122344-B1 - MASK CONTAINING NANO DRIED METAL CHLORIDE SALT

EP4122344B1EP 4122344 B1EP4122344 B1EP 4122344B1EP-4122344-B1

Inventors

  • BYEON, JEONG HOON

Dates

Publication Date
20260506
Application Date
20210318

Claims (4)

  1. A method for attaching metal chloride nanoparticles comprising steps of: preparing a solution in which sodium chloride is dissolved in a solvent; producing a fiber material by a roll-to-roll process; spraying the solution on the lower portion of the fiber material, thereby attaching the sprayed liquid droplets to the fiber material; and generating suction on the upper portion of the fiber material to remove the solvent from the attached liquid droplets.
  2. A method for attaching metal chloride nanoparticles comprising steps of: preparing a solution in which sodium chloride is dissolved in a solvent; producing a fiber material by a roll-to-roll process; spraying the solution on the upper portion of the fiber material, thereby attaching the sprayed liquid droplets to the fiber material; and generating suction in the lower portion of the fiber material to remove the solvent from the attached liquid droplets.
  3. A method for attaching metal chloride nanoparticles comprising steps of: preparing a solution in which sodium chloride is dissolved in a solvent; spraying the solution on one side of a substrate and attaching one side of the substrate to which the sprayed liquid droplets are attached to a fiber material, thereby transferring the liquid droplets to the fiber material; and heating the fiber material to remove the solvent.
  4. A method for manufacturing a mask comprising steps of: preparing, as a laminate for the mask, an outer layer serving to support the laminate; and an inner layer positioned to face the outer layer; and placing the fiber material resulting of the method of any one of claims 1 to 3 as an intermediate layer between the outer layer and the inner layer, and then combining the outer layer or the inner layer thereto.

Description

Technical Field The present application relates to methods for attaching metal chloride nanoparticles to a substrate, as well as a method using the intermediate product of said methods for manufacturing a mask. Background Art In general, a mask is an instrument for protecting the respiratory tract of the human body from polluted air or cold air, which is classified, typically, as a cold protection mask for protecting the respiratory tract from cold air, a dust mask for protecting the respiratory tract from dust and the like, and a medical mask that blocks the penetration of foreign substances or bacteria and simultaneously blocks secretions or bacteria from the user from being discharged to the outside. Recently, environmental pollution has emerged as a serious problem, and the environmental atmosphere, where ordinary people live, contains a lot of foreign substances such as fine dust, so that such fine dust and yellow sand are introduced into the human respiratory system, thereby having fatal adverse effects on humans, such as causing various diseases. Here, the fine dust is small and fine dust particles that are invisible to our eyes, which includes numerous air pollutants along with sulfurous acid gas, nitrogen oxides, lead, ozone, carbon monoxide, and the like, the exhaust causes of which are divided into artificial occurrence that occurs in automobiles or factories and natural occurrence, such as yellow sand from sandstorm dust, volcanic ashes, and dust from forest fire, and when a person inhales the fine dust generated in this way, it penetrates deep into the alveoli, causing various respiratory diseases, such as asthma, headache and atopy, and in particular, if the old and the weak continuously inhale it, there is a serious problem that leads to death from lung diseases by lowering immune function. Particularly, mask wearing becomes more and more common, because air pollution caused by yellow sand, fine dust or pollution, and the like has recently become more and more serious, and due to the epidemic called COVID-19. Moreover, it can be said that it is urgent to develop a mask with better functionality while being safer to keep pace with the emergence of new highly contagious diseases due to the gradual increase in bacterial resistance and the occurrence of mutants. Disclosure Technical Problem According to one example of the present application, it is intended to provide a mask containing a nano dried metal chloride salt, capable of promoting the inactivation of bacterial substances, such as viruses, adhering to the outer surface of the mask during use of the mask, and simultaneously removing moisture coming in and out therethrough during use of the mask, and a dry manufacturing process therefor. Technical Solution The invention is defined by the appended independent claims 1-4. Advantageous Effects According to one example of the present application, it is possible to promote inactivation of bacterial substances, such as viruses, adhering to the surface during use of the mask. According to one example of the present application, it is possible to remove moisture coming in and out therethrough during use of the mask. According to one example of the present application, it is possible to provide a mask having excellent comfortableness. Description of Drawings Figure 1 is a schematic diagram of a laminate for a mask, which is one example of the present application.Figure 2 is a schematic diagram of a laminate for a mask, which is another example of the present application.Figure 3 is a schematic diagram of a laminate for a mask, which is another example of the present application.Figure 4 is SEM images of a laminate for a mask, which is another example of the present application.Figure 5 is a flowchart of a method for attaching metal chloride nanoparticles, which is another example of the present application.Figure 6 is a schematic diagram of a method for attaching metal chloride nanoparticles, which is another example of the present application.Figure 7 is a flowchart of a method for attaching metal chloride nanoparticles, which is another example of the present application.Figure 8 is a schematic diagram of a method for attaching metal chloride nanoparticles or metal chloride nanocomposite particles, which is another example of the present application.Figure 9 is a schematic diagram of a method for attaching metal chloride nanoparticles or metal chloride nanocomposite particles, which is another example of the present application.Figure 10 is a flowchart of a method for attaching metal chloride nanoparticles, which is another example of the present application.Figure 11 is a schematic diagram of a method for attaching metal chloride nanoparticles or metal chloride nanocomposite particles, which is another example of the present application.Figure 12 is a schematic diagram of a method for attaching metal chloride nanoparticles or metal chloride nanocomposite particles, which is another example of the