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Face mask

a mask and face technology, applied in the field of mask construction, can solve the problems of insufficient antibacterial and antiviral effects of inorganic antimicrobial agents against pathogens such as bacteria and viruses, secondary infection, wearers may touch the mask body, etc., to achieve high antibacterial and antiviral effects, improve air permeability, and capture efficiency and productivity.

Inactive Publication Date: 2012-07-19
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a mask that can be worn on a wearer's face to prevent bacteria and viruses from staying on its outer surface. The mask has a mask body that covers at least the mouth and nose of the wearer and ear straps that extend from both sides of the mask body. The mask body is made of a sheet-like structure formed by fixing or entangling fibers by mechanical, chemical, or heat treatment. The mask body includes a first fiber sheet and a second fiber sheet, with the second fiber sheet containing an inorganic antimicrobial agent. The mask can capture dust and other particles in the air and has high antibacterial and antiviral effects. It also has high air permeability and productivity.

Problems solved by technology

Therefore, even if this nonwoven fabric is used to form a mask, the antibacterial and antiviral effects of the inorganic antimicrobial agent against pathogens such as bacteria and viruses are not fully achieved.
Further, when the mask is worn, the wearer may touch the mask body (mask cup).
In this case, if any bacterium or virus adheres to the outer surface of the mask body and stays on it, the bacterium or virus may cause secondary infection.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0058]As for a specimen of example 1, a polypropylene meltblow nonwoven fabric sheet (fiber diameter: 1.5 μm, basis weight: 1.5 g / m2, particle diameter of the inorganic antimicrobial agent: 1.0 μm, particle diameter of the inorganic antimicrobial agent / fiber diameter: 0.7) is used as the nonwoven fabric sheet corresponding to the first fiber layer 14 of the intermediate-layer sheet 13. Further, a polypropylene meltblow nonwoven fabric sheet (fiber diameter: 3.5 μm, basis weight: 15 g / m2) is used as the nonwoven fabric sheet corresponding to the second fiber layer 15 of the intermediate-layer sheet 13. This specimen has the total basis weight of 84.1 g / m2 and contains the inorganic antimicrobial agent of 0.15 g / m2.

example 2

[0059]As for a specimen of example 2, a polypropylene meltblow nonwoven fabric sheet (fiber diameter: 0.5 μm, basis weight: 1.5 g / m2, particle diameter of the inorganic antimicrobial agent: 0.2 μm, particle diameter of the inorganic antimicrobial agent / fiber diameter: 0.4) is used as the nonwoven fabric sheet corresponding to the first fiber layer 14 of the intermediate-layer sheet 13. Further, as the nonwoven fabric sheet corresponding to the second fiber layer 15 of the intermediate-layer sheet 13, the same nonwoven fabric sheet as in the specimen of example 1 is used. This specimen has the same total basis weight and contains the same amount (g / m2) of the inorganic antimicrobial agent as the specimen of example 1.

example 3

[0060]As for a specimen of example 3, a polypropylene meltblow nonwoven fabric sheet (fiber diameter: 1.5μm, basis weight: 1.5 g / m2, particle diameter of the inorganic antimicrobial agent: 0.2 μm, particle diameter of the inorganic antimicrobial agent / fiber diameter: 0.13) is used as the nonwoven fabric sheet corresponding to the first fiber layer 14 of the intermediate-layer sheet 13. Further, as the nonwoven fabric sheet corresponding to the second fiber layer 15 of the intermediate-layer sheet 13, the same nonwoven fabric sheet as in the specimen of example 1 is used. This specimen also has the same total basis weight and contains the same amount of the inorganic antimicrobial agent as the specimen of example 1.

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Abstract

A mask has a mask body and a pair of ear straps. The mask body includes an outer layer sheet and an intermediate layer sheet. The outer layer sheet is formed of hydrophobic fibers. The intermediate layer sheet is laid on the outer layer sheet so as to be located on a wearer's side of the outer layer sheet when the mask is worn. The intermediate layer sheet includes a first fiber layer which is formed of polyolefin fibers containing an inorganic antimicrobial agent and a second fiber layer which is formed of polyolefin fibers and has a larger fiber diameter than the first fiber layer. The fiber diameter of the first fiber layer is within a range of 0.5 to 2.8 μm and the ratio of a particle diameter of the inorganic antimicrobial agent with respect to the fiber diameter is within the range of 0.1 to 6.0.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a technique of constructing a mask to be worn on a wearer's face, and more particularly to a mask having antibacterial and antiviral effects.BACKGROUND OF THE INVENTION[0002]Japanese laid-open Patent Publication No. 2007-37737 discloses a three-dimensional mask which covers wearer's mouth and nose. Recently, responding to rising consciousness of hygienic environment, and epidemics of colds and influenza and further to outbreaks of new infectious diseases such as avian influenza and coronavirus, masks having antibacterial and antiviral effects have been actively developed.[0003]For example, Japanese laid-open Patent Publication Nos. 1993-153874 and 1996-325915 disclose nonwoven fabric which is formed of polyolefin fibers containing an inorganic antimicrobial agent. In this nonwoven fabric, however, most of the inorganic antimicrobial agent present inside of the fibers is covered with polyolefin, so that only a small amount ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A41D13/11
CPCA41D13/113A62B23/025A41D31/0083A41D13/1192A41D31/305A41D13/11A41D2400/52
Inventor SHIBATA, AKIRAISHIGAMI, MAKOTOTAKEUCHI, NAOHITO
Owner UNI CHARM CORP
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