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Wash-durable face mask with antimicrobial properties and/or improved washability

An antimicrobial agent and face mask technology, which is applied in the field of finishing fabric materials, can solve the problems that antimicrobial fibers are not washable and face masks cannot be reused

Inactive Publication Date: 2019-06-07
LIVINGUARD AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the antimicrobial fibers are not washable, and masks made from such fibers are not reusable

Method used

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  • Wash-durable face mask with antimicrobial properties and/or improved washability
  • Wash-durable face mask with antimicrobial properties and/or improved washability
  • Wash-durable face mask with antimicrobial properties and/or improved washability

Examples

Experimental program
Comparison scheme
Effect test

example

[0330] A series of different fabric materials were finished and the finished fabric materials, different multi-layer filter materials and different face masks were tested according to the test protocol described herein. The collation process and test results as well as the reference to the basic test scheme are summarized in Figure 3 to Figure 12 in the table. All finished fabric materials are treated with antimicrobial agents and can be used in multi-layer filter materials and face masks. Multilayer filter materials are assembled by sandwiching one to four layers of granular filter material between two layers of finished fabric material. The layers were joined to each other using ultrasonic welding in a rectangular shape of approximately 144 mm x 76 mm to form a pad. The pad is equipped with straps on all four corners of the pad, thus forming a mask that can fit over the wearer's mouth and nose.

[0331] The finishing process is summarized above each table under the "Appl...

experiment example 1

[0363] EXPERIMENTAL EXAMPLE 1: DIFFERENT COMBINATIONS OF ANTIMICROBIAL AGENTS

[0364] For Experimental Example 1, the effect of applying different amounts of reagents to the starting fabric material was investigated. The agents applied to polyester materials were taken from the group of silver, quaternary ammonium organosilanes and propiconazole, which are the three most preferred antimicrobial agents for treating polyester fabric materials.

[0365] (1) fabrics were treated with each agent from the corresponding group individually, (2) fabrics were treated with all triplet combinations of agents from each group, and (3) fabrics were treated with all three agents from each group together. The total amount of chemicals in all experiments was 6% o.w.f. Therefore, in the case of a single agent applied to the fabric, the corresponding chemical is used at 6% o.w.f; in the case of a combination of two agents applied to the fabric, the respective two chemicals are used at 3% o.w.f...

experiment example 2

[0371] Experimental Example 2: Particle Penetration and Breathing Resistance

[0372] The purpose of Experimental Example 2 was to study the effect of different grades of particulate filter material used in the multi-layer filter material of face masks on particle penetration and breathing resistance. Testing is performed according to standard test IS 9473:2002.

[0373] Figure 6 The data of Experimental Example 2 are shown, in which the inner layer material of the multi-layer filter material is N95 grade granular filter material. One, two, three or four layers of this N95 grade particulate filter material are sandwiched by fabric material. Breathing resistance is significantly increased by using more than one layer of N95-grade particulate filter material between two layers of outer fabric material. The required filtration efficiency of at least 95% is achieved by using at least two layers of N95-rated particulate filter material between two layers of outer fabric materia...

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Abstract

The present invention is directed to a face mask comprising a multi-layer filter material. One or more antimicrobial and / or hydrophilic and / or stain release agents are adhered to a textile material that forms the outer layers of the multi-layerfilter material. The agent(s) is / are adhered to the textile material in such a manner that they are not released from the textile material even if the facemask is washed, so that the face mask as such is re-usable. The particular arrangement of textile layers of the face mask according to the present invention also allows that the face mask can be washed. That is, the textile and the overall structure of the face mask is preserved albeit the physical stress applied during washing. In preferred embodiments, where one or more antimicrobial agents areadhered to the textile material, the face mask can be used to protect the wearer against airborne particulate and microbial pollution, and, in particular, sanitize the inhaled air. Likewise, the environment, such as other persons, are protected from particles and microbes that are exhaled by the wearer of a face mask according to the present invention. Washability and / or usability of the textile material within the multi-layerfilter material of the face mask is / are improved when one or more hydrophilic and / or stain release agents are adhered to the textile material, which is particularly advantageous to ensure that the face mask is rendered as clean as possible during wash, i.e. that absorbed or adsorbed stains are released from the textile. The invention further relates to a method of finishing a textile material by applying and binding antimicrobial and / or hydrophilic and / or stain release agents to the textile material so that the agents are essentially irreversibly adhered to the finished textile material.

Description

field of invention [0001] The present invention relates to a mask comprising multiple layers of filter material. One or more antimicrobial and / or hydrophilic and / or soil release agents are adhered to the fabric material to form the outer layer of the multilayer filter material. The one or more agents are adhered to the fabric material such that they are not released from the fabric material even if the mask is washed, so that such a mask can be reused. The particular arrangement of the fabric layers of the mask of the invention also allows the mask to be washable. That is, despite the physical stress applied during washing, the overall structure of the fabric and mask is preserved. In preferred embodiments, face shields may be used to protect the wearer from airborne particulate and microbial contamination, particularly to disinfect inhaled air, with one or more antimicrobial agents adhered to the fabric material . Likewise, the environment, such as other people, is protec...

Claims

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Application Information

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IPC IPC(8): A41D13/11A61K8/02A62B23/02D06M11/13A01N25/24A01N25/34A01N33/12A01N47/44A01N59/16A61L2/16D06M13/256D06M13/352D06M16/00
CPCA01N25/24A01N25/34A01N33/12A01N47/44A01N59/16A41D13/11A41D13/1192A62B23/025A61L2/16D06M11/13D06M13/256D06M13/352D06M16/00B01D2239/0442B01D2239/065
Inventor S·斯瓦米
Owner LIVINGUARD AG
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