Anti Viral Face Masks
Such further materials could also be woven or non-woven materials. Examples of non-woven materials embody polypropylene, polyethylene, polyester, nylon, PET and PLA. Such a cloth may be in the form of a non-woven sheet or pad. Suitable grades of non-woven polypropylene embody the well-known grades generally used for surgical face masks and the like.
A masks in accordance with declare 11 whereby the acidic polymer contains Gantrez™ S- 97. A mask based on claim 9 wherein the acidic polymer relies on maleic acid moieties including -[-CH. COOH-]- units, and/or salts or esters of such items, or such units in anhydride type by which COOH teams on adjoining carbon atoms are cyclised to form a -CH.CO-O-CO.CH- ring system. A mask in accordance with declare 7 whereby the acidic polymer includes a homopolymer of acrylic acid crosslinked with an allyl ether.
Superior Viraloff® Antiviral Technology
A filter materials in accordance with any one of claims whereby the whole loading of the acidic polymer plus any carboxylic acid if any and plus any surfactant if any on the substrate of the filter materials is within the range g/m2. Respective samples of a non-woven polypropylene of a standard type as used for surgical masks were coated with each of those solutions, the pattern was allowed to drain off extra liquid, and then allowed to air dry. This procedure utilizing the above solutions resulted in a ca. 10% w/w deposition of the acidic polymer onto the substrate materials. WO-A-2001/07090 discloses a filter for eradicating micro-organisms comprising a substrate having a reactive floor and a polymer on its surface which includes cationic groups for attracting micro organisms. WO-A-2002/ discloses an air filter with micro-encapsulated biocides.
An example of a steel salt of this kind is zinc chloride. As used herein the time period “acidic polymer” includes a polymer having acidic groups alongside its spine, e.g. as side groups. Suitable acidic teams are carboxylic acid teams. The acidic polymer may be cross-linked or linear.
An example of a copolymer of acrylic acid and sulphonic acid is commercially obtainable beneath the trade name Good-Rite™ K-776. Other acidic polymers could comprise copolymers of acrylic acid and a sulphonic acid. For instance the acidic polymer may comprise copolymers and terpolymers of maleic acid, poly(2-acrylamido-2-methylpropane sulfonic acid) (“polyAMPS”), and copolymers of acrylic acid and a pair of-acrylamido-2-methylpropane sulfonic acid. The inhalation of air contaminated by dangerous virus and/or other micro-organisms is a typical route for infection of human beings, notably health staff and others triggered to work with contaminated people or animals. Air exhaled by contaminated patients is a supply of contamination. At the present time the risk of infection by the so referred to as “bird flu” H5N1 virus is of explicit concern.
- Acidic polymers which have been discovered helpful for the purposes herein have been discovered to have molecular weights in the vary 30,000 to 2,000,000 but molecular weight doesn’t look like important, and this can be simply an exemplary range.
- 7 A masks according to claim 6 wherein the acidic polymer includes a polymer of acrylic acid or methacrylic acid.
- Further experiments had been performed using a polyester substrate materials.
- The antiviral expertise is safety of the handled product, not the wearer.
- P2F had now overcome the delay in testing, reported on 8 October, by conducting stay virus exams at two impartial UK laboratories.
- The face masks may additionally comprise a number of layer of a further material, e.g. one layer backing the filter materials, or two layers sandwiching the filter materials, optionally with one or more further layer.
This loaded material was moulded into mask shells in a traditional method known within the artwork. Further experiments had been performed using the “6% solids” loading answer referred to above, utilized by spraying or immersion to lighter polyester supplies. Such filter supplies might have independent utility, e.g. in different forms of air filter system. Therefore in an extra facet the current invention supplies a filter materials appropriate for use in the face mask of this invention. Preferred varieties, features and embodiments of such a filter materials are as discussed above. Certain filter materials disclosed herein to be used within the face mask of this invention are believed to be novel per se.
Disposable Anti Viral Face Masks For H1n1, Mrsa, Swine Flu, For Clinic
The filter 10 is of usually typical construction comprising a pad which may be connected over the nostril and mouth of a consumer by a traditional strap . The pad comprises an outer layer of the filter material of the invention stitched to an inner polyester fibre pad , the outer layer being able to intercept a stream of inhaled or exhaled respiratory air. Such a ensuing liquid composition is herein termed a “loading resolution”.
Websites for a number of antiviral masks do not provide detailed information about how researchers tested their safety or effectiveness, said Hyo-Jick Choi, a supplies science skilled at the University of Alberta. Two forms of experiments have been used to judge the antiviral exercise of the coating, deposited on disposable, filtering face piece masks , towards the SARS-CoV-2. A liquid composition based on claim 37 wherein the liquid composition comprises 0.5 – 6.zero wt% of the acidic polymer; 0 – 3.zero wt% natural carboxylic acid, and zero – three.zero wt% surfactant, e.g. wt% surfactant.
The coating transforms the bottom materials into an anti-viral, multi-functional protecting snood. So light and breathable you will not consider its virus stopping power. Proven to lure and kill airborne enveloped influenza viruses. A filter material in accordance with claim 28 wherein the acidic polymer relies on maleic acid moieties which embrace -[-CH.