CN211861881U

CN211861881U - Anti-foam antibacterial nano-film circulating protective mask

Info

Publication number: CN211861881U
Application number: CN202020224192.5U
Authority: CN
Inventors: 盛宇; 严杰; 赵素花; 张雪; 陆海明
Original assignee: Shubo Shanghai Nano Technology Co ltd
Current assignee: Shubo Shanghai Nano Technology Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-11-06
Anticipated expiration: 2030-02-28

Abstract

The utility model provides an anti-foam antibacterial nanometer membrane circulation protective facial mask, it has the gauze mask body, and the gauze mask body includes: the waterproof layer is positioned on the outer layer of the mask body and is made of fabric treated by a waterproof finishing agent; the filtering and adsorbing layer is positioned in the middle of the mask body and is of a double-layer or multi-layer structure formed by hot pressing of non-woven fabrics and nano microporous films; and the skin-friendly layer is positioned on the inner layer of the mask body. The utility model has the advantages that: 1. the protective force is increased for droplets, virus aerosol and the like so as to reach the KN95 protective level; 2. the waterproof layer positioned on the outer layer is washable, and the mask structure adopts a plug-in piece type replaceable filter element; 3. the inner layer is made of novel materials, and the antibacterial and deodorant functions are superposed while the inner layer is soft and attached to the skin; 4. adopts the waterproof technology which is environment-friendly and completely meets the standard.

Description

Anti-foam antibacterial nano-film circulating protective mask

Technical Field

The utility model relates to a gauze mask, concretely relates to prevent flying antibiotic nanometer membrane circulation protective facial mask of foam belongs to medical textile technical field.

Background

The mask on the market at present is rich in types, and comprises a KN95 mask, a medical surgical mask, a medical nursing mask, a haze-preventing mask, a common medical mask, a sponge mask, a cotton cloth mask, an activated carbon mask and the like. Because the novel pneumonia has a unique transmission mode (spray and aerosol), only KN95 mask and medical surgical mask have a better protection effect on the novel pneumonia virus. The KN95 mask is based on strong electrostatic adsorption force of an electrostatic melt-blown layer, and the common medical surgical mask is organically combined with a core layer filter layer through an outer waterproof layer, so that the purpose of effectively protecting novel pneumovirus is achieved.

As a disposable product, under the consumption demand of 14 hundred million people in China, domestic stock cannot be consumed at all, and the capacity is seriously insufficient. In epidemic prevention and control, the lack of prevention and control materials is a great resistance. On the premise that the domestic productivity is difficult to greatly improve, the key for solving the problems is how to realize sustainable use of the mask.

The patent of publication No. CN104826250A provides a long-acting sterilization pocket type multipurpose replaceable filter element mask and a mask filter sheet, and the patent achieves the purpose of sustainable use by carrying out photocatalyst treatment or silver ion long-acting antibacterial treatment on the mask and the filter sheet and combining with a pocket type structure capable of replacing the filter element. However, this method has some problems, such as incomplete photocatalytic degradation of the photocatalyst under the condition of insufficient light source, failure of silver ion antibacterial removal of fine particles, droplets, aerosol and the like attached to the mask, and actually greater protection against viruses only by the interlayer filter.

Patent publication No. CN110584239A provides an antibacterial mask and a method for manufacturing the antibacterial mask, which comprises mixing chitin or anion powder to prepare an antibacterial material, adding the antibacterial material into a film-forming agent to prepare an antibacterial coating, coating the antibacterial coating on a non-woven fabric, and making an inner layer of the mask from the dried antibacterial non-woven fabric with antibacterial function. The patent endows the non-woven fabric with an antibacterial effect in a water-based film coating mode by compounding a plurality of antibacterial components, does not influence the ventilation effect of the non-woven fabric, and is a safe function superposition. However, simple antibacterial action against the novel pneumovirus is not sufficient.

Aiming at the prevention and control of viruses, the existing mask has the following defects:

1. most masks lack protection against droplet transmission of viruses and aerosol transmission forms;

2. the existing mask is lack of sustainability, which directly results in a great deal of waste of resources and insufficient productivity all the time. The sustainability comprises the water resistance of the waterproof layer at the outer layer, the sustainable use of the filtering and adsorbing layer at the middle layer and the water resistance of a part of superposed functionality;

3. the inner layer of the existing mask is uncomfortable to wear, sweat is easy to cover, and bacteria are bred;

4. the waterproof layer of the outer layer of the existing mask is not environment-friendly, and most of the waterproof layer adopts C8 or C6 auxiliary agent containing fluorine toxic compounds.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is:

1. most of the existing masks have poor virus protection capability;

2. the waterproof layer of the mask is not environment-friendly, and some waterproof finishing agents are harmful to human bodies;

3. the disposable mask has higher comprehensive cost.

In order to solve the technical problem, the utility model provides a novel protective facial mask of circulated use has characteristics such as antibiotic deodorant, prevent droplet, breathing resistance is low, filtration efficiency is high, adsorption efficiency is high, close skin is soft, moisture absorption sweat-releasing. The technical scheme is as follows:

the utility model provides an anti-flying antibacterial nanometer membrane circulation protective facial mask, has the gauze mask body, and the gauze mask body includes:

the waterproof layer is positioned on the outer layer of the mask body and is made of fabric treated by a waterproof finishing agent;

the filtering and adsorbing layer is positioned in the middle layer of the mask body and is of a double-layer or multi-layer structure formed by hot pressing of non-woven fabrics and nano microporous membranes;

the skin-friendly layer is positioned on the inner layer of the mask body.

In some embodiments, the filtering and adsorbing layer is a replaceable insert type, and the left side and/or the right side of the mask body are/is provided with openings for inserting the filtering and adsorbing layer.

In some embodiments, the waterproof layer fabric is one of polyester/spandex woven fabric, polyester/cotton woven fabric, all-cotton woven fabric, nylon/spandex knitted fabric, polyester/nylon woven fabric and non-woven fabric.

In some embodiments, the water repellant finish is a fluorine-free wash-durable water repellant finish.

In some embodiments, the non-woven fabric in the filtration adsorption layer is electrostatic melt-blown non-woven fabric, polypropylene spun-bonded non-woven fabric or hot air cotton non-woven fabric, and the nano microporous membrane is a PTFE nano microporous membrane or an ePTFE nano microporous membrane.

In some embodiments, the filtering and adsorbing layer is a three-layer structure formed by sandwiching one ePTFE nano microporous film by two layers of hot air cotton non-woven fabrics.

In some embodiments, the grammage of the hot air cotton non-woven fabric is 10-20 gsm, the thickness of the ePTFE nano microporous membrane is 2-4 um, and the pore diameter of the ePTFE nano microporous membrane is 0.02-0.3 um.

In some embodiments, the skin-friendly layer is made of one or more blended fabrics of cotton, polypropylene, nylon and terylene.

In some embodiments, the skin-friendly layer is a blended fabric of cotton and polyester, wherein the cotton accounts for 60% by volume, the polyester accounts for 40% by volume, and the polyester is hollow polyester yarn.

The utility model has the advantages that:

1. the mask has increased protection power against droplets, virus aerosol and the like, and reaches the protection level of KN 95;

2. the waterproof layer of the outer layer of the mask is washable, and the filter element can be replaced by an insert piece type mask structure;

3. the inner layer is made of novel materials, and the antibacterial and deodorant functions are superposed while the inner layer is soft and attached to the skin;

4. adopts a waterproof technology which is environment-friendly and completely meets the standard.

Drawings

Fig. 1 is a schematic view of the overall structure of a protective mask according to a preferred embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of each layer of the face fabric of the protective mask according to another preferred embodiment of the present invention.

The reference symbols in the above figures are paraphrased:

10 waterproof layer

20 filtering and adsorbing layer

21 nonwoven fabric

Microporous 22 nm membrane

23 nonwoven fabric

30 skin-friendly layer

40 nose clip

50 ear rope

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this patent belongs. In the description of this patent, unless otherwise indicated, the words "comprise", "comprises", "comprising", "includes" and "having" and the like, mean that the elements or items listed before "including" or "having" cover the elements or items listed after "including" or "having" and their equivalents, and do not exclude other elements or items. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" means two or more.

In the description of this patent, it is to be understood that the terms "upper," "lower," "left," "right," "horizontal," "lateral," "longitudinal," "top," "bottom," "inner," "outer," "clockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

The conception, the specific structure and the technical effects produced by the present patent will be further described in conjunction with the accompanying drawings to fully understand the objects, the features and the effects of the present patent. It is noted that in the detailed description of these embodiments, not all features of an actual implementation are described in detail in the interest of brevity.

As shown in fig. 1, the anti-foam antibacterial nano-film circulation protective mask mainly comprises a mask body, a nose clip 40 positioned in the upper edge of the mask body and ear strings 50 at two sides. Further, the gauze mask body comprises the waterproof layer 10 that is located outermost, the filtration adsorbed layer 20 that is located the intermediate level and the close skin layer 30 that is located the inlayer, and this kind of composite bed structure makes the gauze mask have the anti-bacterial effect of flying the foam, and can wash and recycle, has practiced thrift the cost.

The upper and lower sides of the mask skin-friendly layer 30 are fixed to the upper and lower sides of the waterproof layer 10, respectively, and the two are fixed by sewing, hot pressing, and other common methods. One or two sides of the skin-friendly layer 30 are separated from the waterproof layer 10, so that a thin cavity and at least one opening are formed between the waterproof layer 10 and the skin-friendly layer 30, the filtering and adsorbing layer 20 is a replaceable insert, and the filtering and adsorbing layer 20 is inserted into the cavity from the opening before the mask is used. After the mask is used, the filtering and adsorbing layer 20 is pulled out of the mask body, and the waterproof layer 10 and the skin-friendly layer 30 can be cleaned by water for next recycling. The filtering and adsorbing layer 20 can be reused after being sterilized by 75% alcohol. In order to achieve a better protection effect, the filtering and adsorbing layer 20 and the skin-friendly layer 30 are basically the same in shape and size.

The waterproof layer 10 is made of one of polyester/spandex woven fabric, polyester/cotton woven fabric, all-cotton woven fabric, nylon/spandex knitted fabric, polyester/nylon woven fabric, polyester/nylon non-woven fabric, and the like. Preferably, the non-woven fabric made of the polyester staple fibers in a needling mode has a certain protective effect on water molecules and spray, has better coloring performance, and is more favorable for the superposition of a waterproof finishing agent.

The fabric of the waterproof layer 10 is padded and finished by a waterproof finishing agent. The waterproof finishing agent is one or more of DuPont Teflon three-proofing finishing agent, American nano-tex three-proofing finishing agent, transmissible TF-5025H, TF-4116G, Dajin TG-4574 and washable fluoride-free waterproof agent. The conventional C8 series waterproof agents in the market at present all contain APEO (alkylphenol polyoxyethylene ether compounds), PFOA (perfluorooctanoic acid ammonium) and PFOS (perfluorooctanoic acid). Perfluorooctanoic acid is a toxic chemical that has been severely limited by the country, is internationally banned, has bio-accumulative toxicity to the human body, and causes irreversible damage when the concentration in the body reaches 2 mg/kg. The waterproof effect of the C6 product is weaker than that of the C8 product, and correspondingly, the toxicity is weaker; although the medicine can be discharged from the body through the metabolism of the human body, so as not to cause some adverse symptoms, the medicine still has slight toxicity.

The product properties of the mask product generally need to be worn for a long time, and frequent respiratory convection increases the absorption of the human body to the perfluorooctanoic acid, thereby greatly increasing the health hidden trouble. Therefore, a waterproof treatment method for the outer layer of the mask, which does not contain toxic substances and has a completely qualified waterproof property, is required to be selected. Preferably used as a wash-resistant fluoride-free water-proofing agent in the German department

And (5) processing the outer-layer fabric of the mask. Washable fluoride-free water-proofing agent German's family

The fabric has the advantages of no fluorine, environmental protection, 3-4 waterproof performance and low influence on the touch of fabrics after being washed for more than 30 times, and has the defect of poor water pressure resistance, but the defect does not influence the protection of conventional foams and aerosol. Experiments show that the washable fluoride-free waterproof agent is used in the German department

The treated mask outer layer can effectively prevent the mask protective capability from losing efficacy due to the fact that the water-based liquid reaches the filtering and adsorbing layer after being soaked.

As shown in fig. 2, the filtering and adsorbing layer 20 has a double-layer or multi-layer structure formed by laminating a non-woven fabric and a nano microporous film. The non-woven fabric is selected from electrostatic melt-blown non-woven fabric, polypropylene (PP) spun-bonded non-woven fabric or hot air cotton non-woven fabric. The nano microporous membrane is PTFE nano microporous membrane or ePTFE nano microporous membrane. The ePTFE (expanded polytetrafluoroethylene) film is made up by using PTFE (polytetrafluoroethylene) as raw material, and making it pass through a certain technological process to make it be expanded into a microporous low-density film, and said film possesses the inherent properties of PTFE, such as smooth surface, excellent chemical stability, very low friction coefficient, high-low temp. resistance and ageing-resistant property. The ePTFE membrane is composed of a plurality of very fine fibers, the surface of the ePTFE membrane has a spider-web type microporous structure, the porosity can reach 90%, the pore diameter is generally between 0.5 and 3um, the minimum pore diameter can reach 0.02um, the ePTFE membrane is an ideal filtering material, and the filtering effect reaches KN95 level. In addition, the ePTFE film integrates excellent waterproof and moisture-permeable performances, so that water vapor can penetrate through the ePTFE film quickly, and a human body does not feel stuffy.

Preferably, a three-layer structure of hot air cotton non-woven fabric, an ePTFE (expanded polyethylene) nano microporous membrane and hot air cotton non-woven fabric is adopted, the gram weight of the hot air cotton non-woven fabric is 10-20 gsm, and the thickness of the ePTFE nano microporous membrane is 2-4 um. Further, the hot air cotton non-woven fabric 21 close to the waterproof layer 10, the ePTFE nano microporous membrane 22 and the hot air cotton non-woven fabric 23 close to the skin-friendly layer 30 are combined together through a hot pressing technology, and a replaceable insert type filter disc is manufactured. The two layers of hot air cotton non-woven fabrics are selected to sandwich one layer of ePTFE nano microporous membrane, and the advantages are that: greatly increasing the adsorption purification rate of the whole system. Because the ePTFE nano microporous membrane and the hot air cotton non-woven fabric have certain orientation to dust and aerosol with different particle sizes (for example, the hot air cotton non-woven fabric only has better protection effect to larger particles, and the ePTFE nano microporous membrane can block smaller pore sizes), but the ePTFE membrane is thinner, if the ePTFE nano microporous membrane has blocking effect to particles with all particle sizes, the pore blocking is easily caused, and the service life of the mask is greatly shortened. Consequently adopt three layer construction, two-way protection, outer hot-blast cotton non-woven fabrics 21 separation large granule dust, virus aerosol, the dust etc. of smaller granule is adsorbed in the separation of ePTFE nanometer microporous membrane 22, and the non-woven fabrics combines with the organic of nanometer microporous membrane the two, can increase gauze mask life again by a wide margin when increasing the separation ability by a wide margin.

In an alternative embodiment, the filtering and adsorbing layer 20 is a polypropylene (PP) spun-bonded non-woven fabric + ePTFE nano microporous membrane. Compared with hot air cotton non-woven fabric, the polypropylene spun-bonded non-woven fabric is stiffer and stiffer, is mainly used as a supporting layer of the ePTFE nano microporous membrane, and increases the dust holding capacity of the ePTFE nano microporous membrane because the upper limit of dust particles adsorbed on the surface is improved. If polypropylene spun-bonded non-woven fabric is not used as a supporting layer, a single layer of ePTFE nano microporous membrane is too thin and is easy to adsorb and saturate, so that the replacement type mask filter element is not suitable to be made.

The skin-friendly layer 30 is positioned at the innermost layer of the mask and is attached to the skin of a user, and the skin-friendly layer 30 is made of one or more blended fabrics of cotton, polypropylene, nylon and terylene. Preferably, the CVC fabric is selected, and the component proportion (volume ratio) of the CVC fabric is 60% of cotton and 40% of polyester. More preferably, the terylene is hollow terylene yarn. The hollow pores of the hollow polyester yarns are filled with nano functional powder materials, so that the antibacterial, deodorant and negative ion functions are superposed. Because the yarns are filled in a hollow mode, the antibacterial and negative ion functions have washing fastness and the moisture absorption and skin affinity of cotton.

The outer droplet of preventing of gauze mask that this patent provided reaches more than 95% separation rate to particulate matter more than 0.3um, can wash. The inner layer is skin-friendly, antibacterial, deodorant, and can also be washed with water. The middle layer is provided with a nano microporous membrane with high air permeability and moisture permeability, and the membrane can be subjected to disinfection treatment such as boiling water, alcohol and the like, can be repeatedly used for dozens of times and cannot damage the filtering performance.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides an antibiotic nanometer membrane circulation protective facial mask of anti-foam has the gauze mask body, its characterized in that, the gauze mask body includes:

the skin-friendly layer is positioned on the inner layer of the mask body.

2. The anti-entrainment antibacterial nanomembrane circulation protective mask according to claim 1, wherein the filtering and adsorbing layer is a replaceable insert type, and the left side and/or the right side of the mask body has an opening for inserting the filtering and adsorbing layer.

3. The anti-entrainment antibacterial nano-film circulation protective mask according to claim 1, wherein the waterproof layer fabric is one of polyester-spandex woven fabric, polyester-cotton woven fabric, all-cotton woven fabric, nylon-spandex knitted fabric, polyester-nylon woven fabric and non-woven fabric.

4. The anti-foam antibacterial nanomembrane cyclic protective facial mask according to claim 1, wherein the waterproof finish is a fluorine-free washable waterproof finish.

5. The anti-foam antibacterial nano-film circulation protective mask as claimed in claim 1, wherein the non-woven fabric in the filtration and adsorption layer is electrostatic melt-blown non-woven fabric, polypropylene spun-bonded non-woven fabric or hot air cotton non-woven fabric, and the nano-microporous film is a PTFE nano-microporous film or an ePTFE nano-microporous film.

6. The anti-entrainment antibacterial nano-membrane circulation protective mask as claimed in claim 5, wherein the filtration and adsorption layer is a three-layer structure of two layers of hot air cotton non-woven fabrics sandwiching one layer of ePTFE nano-microporous membrane.

7. The anti-entrainment antibacterial nanomembrane circulation protective facial mask as claimed in claim 6, wherein the three layers are integrated by hot pressing.

8. The anti-entrainment antibacterial nanomembrane circulation protective mask according to claim 6, wherein the grammage of the hot-air cotton nonwoven fabric is 10 to 20gsm, the thickness of the ePTFE nanoporous membrane is 2 to 4um, and the pore diameter of the ePTFE nanoporous membrane is 0.02 to 0.3 um.

9. The anti-entrainment antibacterial nano-film circulation protective mask as claimed in claim 1, wherein the skin-friendly layer is made of one or more blended fabrics of cotton, polypropylene, nylon and terylene.