CN111150947A

CN111150947A - Reusable antibacterial haze-preventing and anti-virus mask and preparation method thereof

Info

Publication number: CN111150947A
Application number: CN202010178983.3A
Authority: CN
Inventors: 欧阳林
Original assignee: Beijing Taijie Environmental Protection Technology Co ltd
Current assignee: Beijing Taijie Environmental Protection Technology Co ltd
Priority date: 2020-03-15
Filing date: 2020-03-15
Publication date: 2020-05-15

Abstract

The invention relates to a reusable antibacterial haze-preventing and anti-virus mask and a preparation method thereof. The antibacterial haze-preventing and anti-virus mask comprises a separated silica gel mask body, a face cover and a replaceable antibacterial blocking filter disc, wherein the replaceable antibacterial blocking filter disc is sealed between the mask body and the face cover through the physical size matching of the mask body and the face cover. The separated silica gel cover body and the face cover can be cleaned and sterilized by conventional methods such as washing, cooking, alcohol and the like, and can be repeatedly used for a plurality of times, so that the service life is prolonged; the 3D ergonomically designed silica gel mask body is reasonable in structure, high in sealing degree with the face, large in air inlet and outlet amount of the face cover with multiple holes, and well harmonizes the protection efficiency and the air permeability of the mask; and the separation filter disc can be replaced independently and periodically, and can be cut by using a common medical mask or a medical surgical mask to replace emergency, so that the average comprehensive use cost is greatly reduced. The mask can be repeatedly used and has good antibacterial, haze-preventing and virus-preventing functions.

Description

Reusable antibacterial haze-preventing and anti-virus mask and preparation method thereof

Technical Field

The invention relates to the field of masks and a preparation method thereof, in particular to a reusable (recyclable) antibacterial haze-preventing anti-virus mask which is provided with a replaceable antibacterial blocking filter sheet and can be cleaned, sterilized, splash-preventing and separated from a silica gel mask body and a mask cover, and a preparation method thereof.

Background

The mask is a common sanitary protective article, and especially during the period of infectious disease outbreak and epidemic situation, wearing the mask is one of the indispensable effective means of personal protection. In addition, with the development of industrialization and urbanization, the quality of atmospheric air is increasingly deteriorated, the haze weather frequently appears, and a large amount of inhalable particles, sulfuric acid, nitric acid, organic hydrocarbons and other particles contained in the haze cause great harm to the health of people. People often need to wear the mask when going out. The commonly used protective mask mainly comprises a common mask, a disposable medical mask, a medical surgical mask, a particulate matter protective mask, a medical protective mask and the like, and the anti-haze electric mask is high in cost and heavy in self weight. Common cotton cloth, gauze or non-woven fabric masks are gradually eliminated because haze and bacterial viruses cannot be effectively blocked. The mask in the prior art has the following problems: 1. most of the products are disposable products, can not be cleaned and disinfected by conventional methods such as cooking, alcohol and the like, and have short service time, thereby causing great waste of resources; 2. most of the devices are integrated structures, cannot be reused, and have high average comprehensive use cost; 3. Due to low fit degree with the face, common medical masks and medical surgical masks cannot effectively block haze particles and pathogenic microorganisms smaller than 2.5 microns, and are easy to cause water mist of the glasses; 4. the protective efficiency and the air permeability cannot be well combined, the particulate protective mask, the medical protective mask and the like have good protective performance, but the air permeability is poor and is easy to suffocate, and the breath is also easy to be condensed into water, gas and condensed water on the face and is not suitable for being worn for a long time; 5. the electrostatic cotton is mainly used for adsorbing and blocking haze particles and bacteria and viruses by means of polypropylene melt-blown electrostatic cotton, the method is single, and the electrostatic layer is easily damaged by water vapor and the like to cause the failure of the protective effect of the mask; 6. most of the masks need to be produced and processed by using a specially-made mask machine, medical materials and the like, and when the demand of the mask for epidemic outbreak is suddenly and greatly increased, the mask cannot be rapidly put into production to increase the productivity.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a reusable antibacterial haze-preventing and anti-virus mask which adopts a separated mask body, a mask cover structure and an antibacterial blocking filter disc which can be conveniently replaced, and has a good function of blocking bacteria, viruses, spray, aerosol and haze particles; the silica gel cover body and the face cover with the separated structure can be repeatedly cleaned and disinfected by conventional methods such as cooking, alcohol and the like, and can be repeatedly used for multiple times, so that the service time is prolonged, and the average comprehensive use cost is greatly reduced; the 3D human face engineering designed silica gel cover body is reasonable in structure, the food-grade silica gel material is skin-friendly and comfortable, the degree of close fit with the face is high, the air inlet and outlet amount of the face cover with multiple holes is large, and the protection efficiency and the air permeability of the mask are well coordinated; and the bottom of the cover body is provided with a groove for collecting condensed water, so that the face is prevented from generating water vapor. The mask has compact structure and light self weight, and can be worn for a long time.

The invention also aims to provide the antibacterial haze-preventing and anti-virus mask and the preparation method of the antibacterial barrier filter sheet thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a repeatedly usable's antibiotic haze antivirus gauze mask of preventing, includes the cover body and the face lid of disconnect-type and passes through the cover body with the physical dimension cooperation of face lid and sealed the cover body with the antibiotic separation filter element that can conveniently change between the face lid.

According to the antibacterial haze-preventing and anti-virus mask, the mask body is in an oblique cone shape designed by 3D human face engineering and is made of silica gel, and preferably food-grade silica gel is integrally formed by injection molding, jetting and injecting;

according to the antibacterial haze-preventing and anti-virus mask, the mask body is provided with a rear opening used for being attached to a face and a front opening connected with the face cover; the upper end of the rear opening of the mask body is provided with a concave nose support, the lower end of the rear opening of the mask body is provided with a concave chin support, and the whole rear opening is closely attached to a human face to well prevent side air leakage;

according to the antibacterial haze-proof and anti-virus mask, the front opening of the mask body is provided with the reinforcing rib convex clamping ring and the reinforcing rib concave clamping groove which are used for being matched and hermetically connected with the mask cover; preferably, the bottom of the cover body is provided with a concave cavity for collecting condensed water;

according to the antibacterial haze-proof and anti-virus mask, the two side parts of the mask body are respectively provided with two silica gel hangers and two hanger holes or grooves for the hangers to pass through; preferably, the ear hanging belt is made of silica gel or rubber elastic bands and can be round or flat, and protrusions are preferably arranged on the upper portion of the ear hanging belt in a segmented mode and used for adjusting the length of the ear hanging belt, so that the mask can be conveniently fixed on the ear or the head;

according to the antibacterial haze-proof and anti-virus mask, the bottom or the side part of the mask body can be provided with the one-way air outlet valve.

According to the antibacterial haze-proof and anti-virus mask, the face cover is made of silica gel or high-polymer plastic resistant to high temperature of more than 100 ℃, and preferably food-grade silica gel is integrally formed by injection molding, jetting and injecting;

according to the antibacterial haze-proof and anti-virus mask, the front part of the mask cover is of an arc convex structure, and the front surface is uniformly and densely provided with the hollow through holes, so that the ventilation quantity can be increased; the middle part of the face cover is of a groove structure, and is provided with a groove ring for accommodating and fixing the blocking filter disc; the face lid rear portion is open structure, be provided with the strengthening rib draw-in groove ring be used for with the preceding opening cooperation sealing connection of the cover body can ensure the face lid with the absolute sealing connection of the cover body prevents gas leakage, can take off the face lid more easily again, conveniently changes the separation filter element.

According to the antibacterial haze-proof and anti-virus mask, the blocking filter is located between the mask body and the face cover, and is formed by compounding the outer layer, the middle layer and the inner layer, the blocking filter is sequentially overlapped together in sequence and is formed into an integrated sheet through ultrasonic spot welding, gluing or sewing, and the blocking filter is cut into a size and a shape which are matched with the groove ring in the middle of the face cover, so that air leakage from the periphery of the blocking filter is prevented. The face cover can be conveniently replaced after being opened.

According to the antibacterial haze-proof and anti-virus mask, the outer layer and the inner layer of the barrier filter sheet are respectively cut from water-repellent non-woven fabrics, and polypropylene spun-bonded non-woven fabrics are preferably selected, so that external spray and liquid splashing can be effectively prevented, static electricity of the middle layer can be prevented from being damaged by internal breathing moisture and water permeation, and the service life of the mask is prolonged. In order to further increase the antibacterial performance of the barrier filter disc, the outer layer and the inner layer of the barrier filter disc are preferably subjected to antibacterial finishing by adopting a padding process in advance, and are padded with a composite catalytic catalyst material or a commercially available bactericide such as one or more of a nano-silver bactericidal solvent, benzalkonium chloride, a double-chain quaternary ammonium salt, an organosilicon quaternary ammonium salt and the like.

According to the antibacterial haze-proof and virus-proof mask, the middle layer of the blocking filter sheet is made of the electrostatic filter cotton, preferably 1-3 layers of the electrostatic filter cotton, preferably the melt-blown polypropylene non-woven fabric subjected to electrostatic electret treatment is selected, and the anti-bacterial haze-proof and virus-proof mask is superfine electrostatic fiber cloth and can well capture dust, adsorb and block microparticle aerosols such as viruses by utilizing electrostatic adsorption.

Or preferably, the middle layer is a Polytetrafluoroethylene (PTFE) film prepared by a unidirectional or bidirectional stretching method, PTFE has excellent high temperature resistance, chemical resistance, non-adhesion and hydrophobic performance, the surface of the PTFE film has a spider-web-type micropore (100-200 nanometers) structure, and the three-dimensional structure has very complicated changes such as net-shaped communication, hole bushing, pore channel bending and the like, so that the PTFE film has an excellent surface filtering function, high blocking efficiency, long service life, light weight, thinness and air permeability.

Or preferably, in order to achieve a better anti-haze and anti-virus effect, the middle layer sequentially comprises the electrostatic filter cotton, the activated carbon felt and the sterilization layer. The electrostatic filter cotton is used for adsorbing and blocking virus, haze and other microparticle aerosols, and preferably a melt-blown polypropylene non-woven fabric subjected to electrostatic electret treatment; the activated carbon felt is used for adsorbing inhalable particles in haze, particles such as sulfuric acid, nitric acid and organic hydrocarbon and odor, so that the dust holding capacity is greatly increased; the sterilization layer is made of non-woven fabrics, preferably spunlace non-woven fabrics with strong hygroscopicity or polypropylene spun-bonded non-woven fabrics subjected to hydrophilic treatment, and is impregnated and coated with one or more of composite catalytic catalyst materials or commercially available bactericides such as nano-silver sterilization solvent, benzalkonium chloride, double-chain quaternary ammonium salt, organosilicon quaternary ammonium salt and the like in advance.

The preparation method of the composite catalytic catalyst material preferably adopted by the invention refers to the technical scheme recorded in the authorization notice No. CN101474419B, and the composite catalytic catalyst material is nontoxic, tasteless and non-irritant, can quickly, continuously and thoroughly eliminate free formaldehyde, benzene series, ammonia and TVOC harmful gas and peculiar smell, and has a bacteriostasis rate of 99.99%.

According to the antibacterial haze-preventing and virus-preventing mask, the mask body and the mask cover are preferably made of food-grade silica gel (the liquid silica gel is integrally formed by injection molding, spraying and injecting), are skin-friendly and comfortable, can be cleaned and sterilized by using conventional methods such as washing, cooking and alcohol, and have the functions of preventing spray and liquid splashing.

The preparation method of the antibacterial haze-preventing and virus-preventing mask comprises the steps of manufacturing the mask body and the mask cover and manufacturing the antibacterial blocking filter.

According to the preparation method of the antibacterial haze-preventing and anti-virus mask, the mask body is made of silica gel, after an inclined cone-shaped die designed according to 3D human face engineering is opened, preferably food-grade silica gel is manufactured by adopting an injection molding, jetting or injection integrated forming process; the surface cover is made of silica gel or high-polymer plastic resistant to high temperature of more than 100 ℃, and after a mould is opened according to the design, food-grade silica gel is preferably manufactured by adopting an injection molding, jetting or injection integral molding process.

The manufacturing of the barrier filter disc is the key technology of the method, and the barrier filter disc is prepared according to the following steps:

the blocking filter disc is formed by compounding an outer layer, a middle layer and an inner layer.

The outer layer and the inner layer are made of water-repellent non-woven fabrics, and are pre-padded, baked, coated with a composite catalytic catalyst material or a commercially available bactericide and subjected to water-repellent finishing for later use.

The middle layer is made of 1-3 layers of electrostatic filter cotton or polytetrafluoroethylene PTFE films or composed of the electrostatic filter cotton, an activated carbon felt and a non-woven fabric sterilization layer in sequence, and the non-woven fabric sterilization layer is soaked in advance, baked, coated with a composite catalytic catalyst material or a commercially available bactericide and dried for later use.

The outer layer, the middle layer and the inner layer are sequentially overlapped together, are integrated into a whole by using an ultrasonic non-woven fabric spot welding machine in a spot welding mode, or are integrated by using glue or sewing, and are cut according to the size and the shape of the middle groove ring of the surface cover in a matched mode to prepare the flaky antibacterial blocking filter disc.

Particularly, when the mask resource shortage needs emergency, the blocking filter can be replaced by cutting a common medical mask or a medical surgical mask according to the shape and size of the blocking filter, and one common medical mask or medical surgical mask can be cut into 4 pieces to replace the blocking filter, so that emergency is met, and the use cost can be greatly reduced.

And (3) placing the blocking filter disc in the groove ring in the middle of the face cover, fastening the back part of the face cover and the front opening of the mask body, and threading an ear hanging belt in the ear hanging hole or groove of the mask body to obtain the reusable antibacterial haze-proof anti-virus mask.

By adopting the scheme, the separated silica gel cover body and the face cover can be cleaned and sterilized by conventional methods such as washing, stewing, alcohol and the like, and can be repeatedly used for multiple times, so that the service life is prolonged; the barrier filter disc can be replaced independently and periodically, and the ordinary medical mask or the medical surgical mask can be used for cutting to replace emergency, so that the average comprehensive use cost is greatly reduced; the water-repellent non-woven fabrics of the external layer and the internal layer of the barrier filter disc can effectively prevent external spray and liquid from splashing and protect the electrostatic cotton of the middle layer; the composite catalytic catalyst material coated by the blocking filter disc and the electrostatic cotton on the middle layer can effectively adsorb haze particles and kill and inhibit bacteria and viruses; the silica gel cover body designed by 3D human face engineering is reasonable in structure, the skin-friendly and comfortable degree of the food-grade silica gel material and the close fit degree of the face are high, the air inlet and outlet amount of the porous face cover is large, the respiratory resistance is small, and the protection efficiency and the air permeability of the mask are well coordinated; the bottom of the cover body is provided with a groove for collecting condensed water, so that the face is prevented from generating water vapor; the mask has compact structure and light self weight, and can be worn for a long time. The mask can be repeatedly used and has good antibacterial, haze-preventing and virus-preventing functions. And the production and processing do not need to use a special customized machine, and the production can be rapidly put into operation to increase the productivity.

Through detection, the antibacterial haze-preventing and anti-virus mask has a bacteria reduction rate of 99.95%; the filtration efficiency of non-oily particles is 99.99%, the filtration efficiency of oily particles is 99.96%, and the protection effect exceeds the KN95 national standard.

Drawings

FIG. 1 is a schematic view of an explosion structure of the antibacterial haze-preventing and virus-preventing mask of the present invention;

FIG. 2 is a side perspective view of the antimicrobial haze-preventing and anti-virus mask of the present invention;

FIG. 3 is a front view of the antibacterial, haze-preventing and anti-virus mask of the present invention;

FIG. 4 is a rear view of the antibacterial, haze-preventing and anti-virus mask of the present invention;

FIG. 5 is a perspective view of the antibacterial, haze-preventing and anti-virus mask of the present invention;

fig. 6 is a schematic view of the blocking filter of the antibacterial haze-preventing and anti-virus mask of the present invention.

In the figure, 1, a silica gel cover body, 2, a separation filter disc, 3, a face cover, 4, a silica gel hanging lug and a hanging lug hole or groove, 5, a reinforcing rib convex clamping ring of a front opening of the cover body, 6, a reinforcing rib concave clamping groove of a front opening of the cover body, 7, a reinforcing rib concave clamping groove of a back part of the face cover, 8, a reinforcing rib convex clamping ring of a back part of the face cover, 9, a hollow through hole of a surface of the face cover, 10, a back opening of the cover body, 11, a front opening of the cover body, 12, a concave nose support, 13, a concave chin support, 14, a concave cavity, 15, a reinforcing rib ring of a front opening of the cover body, 16, an inner vertical surface of a concave groove ring of a middle part of the face cover, 17, an inner plane of the concave groove ring of the middle part of the face cover, 18, an inner layer of the separation filter disc, 19, a middle layer of the separation filter disc, 20, an outer layer.

Detailed Description

The invention is explained in detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1 to 6, a reusable antibacterial haze-preventing and anti-virus mask includes: the silica gel cover body 1 and face lid 3 to and the separation filter 2 of sealing between the silica gel cover body and face lid through the physical dimension cooperation of the cover body and face lid.

Wherein: the mask body 1 is an oblique cone designed by 3D human face engineering, and is made of food-grade silica gel by adopting an injection molding, jetting or injection integral molding process; the cover body is provided with a rear opening 10 and a front opening 11; the upper end of the rear opening is provided with a concave nose support 12, the lower end of the rear opening is provided with a concave chin support 13, and the whole rear opening is closely attached to a human face to well prevent side air leakage; a reinforcing rib ring 15 is arranged in the front opening, and a reinforcing rib convex clamping ring 5 and a reinforcing rib concave clamping groove 6 are arranged outside the front opening; the bottom of the cover body is provided with a concave cavity 14 for collecting condensed water; two silica gel hangers and hanger holes or grooves 4 are respectively arranged on the side parts of the two sides of the mask body, so that a hanger belt can pass through the two silica gel hangers and the mask can be conveniently adjusted and fixed on the ear part or the head part; a one-way outlet valve 22 may be provided at the bottom or side of the housing.

The surface cover 3 is made of food-grade silica gel by adopting an injection molding, jetting or injection integral molding process, and the front part of the surface cover is of an arc convex structure; the front surface of the face cover is uniformly and densely distributed with hollow through holes 9, so that the ventilation quantity can be increased; the middle part is provided with groove rings 16 and 17 for accommodating and fixing the blocking filter disc; the rear portion is open structure, be provided with the strengthening rib card groove ring and be used for with the cover body front opening's cooperation sealing connection, wherein the internal diameter and the groove height of face lid rear portion strengthening rib female snap-in groove 7 should slightly be less than the external diameter and the ring height of the protruding snap-in ring 5 of the cover body front opening's strengthening rib respectively, the internal diameter and the ring height of the protruding snap-in ring 8 of face lid rear portion strengthening rib should match with the external diameter and the groove height of the preceding open-ended strengthening rib female snap-in groove 6 of the cover body respectively (promptly the internal diameter of the protruding snap-in ring 8 of face lid rear portion strengthening rib should equal or slightly be greater than the external diameter of the preceding open-ended strengthening rib female snap-in groove 6 of the cover body, and the ring height of the protruding snap-in ring 8 of face lid rear portion strengthening rib should equal or slightly be less than the groove height of the.

The blocking filter disc 2 is hermetically positioned between the cover body 1 and the face cover 3, consists of an outer layer 20, a middle layer 19 and an inner layer 18, and is sequentially overlapped together in sequence to be compounded into an integral sheet through ultrasonic spot welding, gluing or sewing. The size and shape of the outer diameter of the blocking filter sheet are cut to be matched with the size and shape of the inner vertical surface 16 of the groove ring in the middle of the surface cover (namely the size and shape of the outer diameter of the blocking filter sheet are equal to or slightly smaller than the size and shape of the inner vertical surface 16 of the groove ring in the middle of the surface cover), and the thickness of the blocking filter sheet is slightly larger than the height of the inner vertical surface 16 of the groove ring in the middle of the surface cover, so that sealing can be well realized, and air leakage from the periphery of the blocking filter sheet is prevented.

The separation filter disc is flatly placed in the groove ring in the middle of the face cover, the outer layer 20 of the separation filter disc is in close contact with the inner plane 17 of the groove ring in the middle of the face cover, the rear part of the face cover is fastened with the front opening of the cover body, and the ear hanging belt is threaded in the ear hanging hole or groove of the cover body, so that the reusable antibacterial haze-preventing and anti-virus mask is manufactured.

If the thickness of the blocking filter disc 2 cannot be slightly larger than the height of the inner vertical surface 16 of the groove ring in the middle of the face cover due to the selection of filter materials, the outer diameter and the shape of the blocking filter disc are cut into the outer diameter and the shape which are equal to or slightly larger than the outer diameter and the shape of the reinforcing rib convex snap ring 5 of the front opening of the cover body, the inner layer 18 of the blocking filter disc is in close contact with the outer plane 21 of the reinforcing rib convex snap ring of the front opening of the cover body to be flatly placed, and then the rear part of the face cover is fastened with the front opening of the cover body, so that sealing can.

Examples

Several specific examples of making barrier filters are given below, but the invention is not limited to these examples, which are for illustrative purposes only and are not intended to be limiting.

Example 1

The external layer and the internal layer of the separation filter disc are made of polypropylene spun-bonded non-woven fabrics, and the composite catalytic catalyst material is pre-padded, baked and coated and subjected to water repellent finishing;

the middle layer is made of a layer of melt-blown polypropylene non-woven fabric subjected to electrostatic electret treatment, a layer of activated carbon felt and a layer of hygroscopic spunlace non-woven fabric, and the spunlace non-woven fabric is soaked in advance, baked and then coated with a composite catalytic catalyst material.

Sequentially overlapping the polypropylene spunbonded non-woven fabric of the outer layer, the melt-blown polypropylene non-woven fabric, the carbon felt, the spunlace non-woven fabric and the polypropylene spunbonded non-woven fabric of the inner layer, and spot-welding the non-woven fabrics into a whole by using an ultrasonic non-woven fabric spot welding machine, or gluing or sewing the non-woven fabrics into a whole. The blocking filter disc is cut according to the inner size and the shape of the inner vertical surface 16 of the groove ring in the middle of the surface cover.

Example 2

The outer layer and the inner layer of the barrier filter sheet are made of polypropylene spun-bonded non-woven fabrics, and the outer layer and the inner layer are pre-padded, baked and coated with a commercially available antibacterial agent and subjected to water repellent finishing; the middle layer is 3 layers of melt-blown polypropylene non-woven fabrics subjected to electrostatic electret treatment.

The polypropylene spunbonded non-woven fabric of the outer layer, the polypropylene melt-blown non-woven fabric of the 3 layers and the polypropylene spunbonded non-woven fabric of the inner layer are sequentially overlapped together and are integrated into a whole by spot welding through an ultrasonic non-woven fabric spot welding machine or are integrated by gluing or sewing. The blocking filter disc is cut according to the inner size and the shape of the inner vertical surface 16 of the groove ring in the middle of the surface cover.

Example 3

The external layer and the internal layer of the separation filter disc are made of polypropylene spun-bonded non-woven fabrics, and the composite catalytic catalyst material is pre-padded, baked and coated and subjected to water repellent finishing; the middle layer is 1 layer of polytetrafluoroethylene PTFE nano film.

Sequentially overlapping the polypropylene spunbonded non-woven fabric as the outer layer, the polytetrafluoroethylene PTFE nano film as the 1 layer and the polypropylene spunbonded non-woven fabric as the inner layer, and performing spot welding by using an ultrasonic non-woven fabric spot welding machine to form a whole or bonding by using glue. The blocking filter disc is cut into a matched blocking filter disc according to the size and the shape of the outer diameter which is equal to or slightly larger than the reinforcing rib convex clamping ring 5 of the front opening of the cover body.

The inner layer 18 of the separation filter disc is closely contacted and flatly placed with the outer plane 21 of the convex snap ring of the reinforcing rib of the front opening of the mask body, the rear part of the face cover is tightly fastened with the front opening of the mask body, and the ear hanging belt is threaded in the ear hanging hole or groove of the mask body, so that the reusable antibacterial haze-preventing and anti-virus mask is manufactured.

Example 4

The composite filter cloth of a common medical mask or a medical surgical mask is used for emergency of the blocking filter.

The nose bridge batten and the elastic band part of the disposable common medical mask or the medical surgical mask are firstly cut off, the rest composite filter cloth is unfolded, the matched emergency separation filter disc is cut out according to the size and the shape of the outer diameter of the reinforcing rib convex clamping ring 5 slightly larger than the front opening of the mask body, and one common medical mask can be cut into 4 emergency separation filter discs approximately.

The inner layer 18 of the emergency separation filter disc is in close contact with the outer plane 21 of the convex snap ring of the reinforcing rib of the front opening of the mask body and is horizontally placed, the rear part of the face cover is fastened with the front opening of the mask body, and the ear hanging belt is threaded in the ear hanging hole or groove of the mask body, so that the antibacterial haze-preventing and anti-virus mask for emergency use is manufactured.

The above embodiments should not be construed as limiting the scope of the present invention, and it is obvious to those skilled in the art that any alternative modifications or changes made to the embodiments of the present invention, such as changing the number of layers of the blocking filter or the structure of the filter, changing the size and shape of the face cover and the cover body, and increasing or decreasing the number of the one-way air outlet valves, fall within the scope of the present invention.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. The utility model provides a repeatedly usable's antibiotic haze antivirus gauze mask that prevents which characterized in that: which includes a separate cover and face cap and a replaceable barrier filter sealed between the cover and the face cap by physical sizing of the cover and the face cap.

2. The antibacterial haze-preventing and anti-virus mask according to claim 1, which is characterized in that: the mask body is an oblique cone designed by 3D human face engineering and is made of silica gel, and preferably food-grade silica gel is integrally formed by injection molding, jetting and injecting; the mask body is provided with a rear opening for being attached to a human face and a front opening connected with the face cover; the upper end of the rear opening of the mask body is provided with a concave nose support, the lower end of the rear opening of the mask body is provided with a concave chin support, and the whole rear opening is closely attached to a human face, so that side air leakage is prevented; the front opening of the cover body is provided with a reinforcing rib convex clamping ring and a concave clamping groove which are used for being matched and hermetically connected with the face cover; preferably, the bottom of the cover body is provided with a concave cavity for collecting condensed water; preferably, the side parts of the two sides of the cover body are respectively provided with a silica gel hanging lug and a hanging lug hole or groove for the hanging lug belt to pass through; preferably, the ear hanging belt is made of silica gel or rubber elastic bands, is preferably round or flat, and is preferably provided with protrusions in sections for adjusting the length of the ear hanging belt, so that the mask can be conveniently fixed on the ear or the head; preferably, the bottom or the side part of the cover body can be provided with a one-way air outlet valve.

3. The antibacterial haze-preventing and anti-virus mask according to claim 1, which is characterized in that: the surface cover is made of silica gel or high-molecular plastic resistant to high temperature of more than 100 ℃, and preferably, food-grade silica gel is integrally formed by injection molding, jetting and injecting; preferably, the front part of the surface cover is of an arc-shaped convex structure, and hollow through holes are uniformly and densely distributed on the surface of the front part; preferably, the middle part of the face cover is of a groove structure, and is provided with a groove ring for accommodating and fixing the blocking filter disc, and the groove ring is used for accommodating and fixing the blocking filter disc; the rear part of the face cover is of an opening structure, and a reinforcing rib clamping groove ring is arranged and used for being matched and hermetically connected with the front opening of the cover body.

4. The antibacterial haze-preventing and anti-virus mask according to claim 1, which is characterized in that: the blocking filter sheet consists of an outer layer, a middle layer and an inner layer, the outer layer, the middle layer and the inner layer are sequentially overlapped and compounded into an integrated sheet, the integrated sheet is preferably compounded into an integrated sheet through ultrasonic spot welding, gluing or sewing, the integrated sheet is cut into a size and a shape which are suitable for the groove structure in the middle of the face cover, the blocking filter sheet is fixed between the cover body and the face cover, air leakage from the periphery of the blocking filter sheet is prevented, and the face cover can be conveniently replaced after being opened.

5. The antibacterial haze-preventing and anti-virus mask according to claim 4, wherein: the external layer and the internal layer of the barrier filter sheet are both formed by cutting water-repellent non-woven fabrics, and polypropylene spun-bonded non-woven fabrics are preferred; preferably, the outer layer and the inner layer of the barrier filter disc are subjected to antibacterial finishing by adopting a padding process in advance, and the composite catalytic catalyst material or a commercially available bactericide such as one or more of a nano-silver bactericidal solvent, benzalkonium chloride, a double-chain quaternary ammonium salt, an organosilicon quaternary ammonium salt and the like is/are coated by padding.

6. The antibacterial haze-preventing and anti-virus mask according to claim 4, wherein: the middle layer of the barrier filter disc is composed of multiple layers of electrostatic filter cotton, preferably 1-3 layers of electrostatic filter cotton, and preferably melt-blown polypropylene non-woven fabric subjected to electrostatic electret treatment; or the middle layer is 1 layer of polytetrafluoroethylene PTFE film prepared by a unidirectional or bidirectional stretching method; or the middle layer is sequentially composed of electrostatic filter cotton, an activated carbon felt and a non-woven fabric sterilization layer.

7. The method for preparing the reusable antibacterial haze-preventing and anti-virus mask according to any one of claims 1 to 6, wherein the method comprises the following steps: the mask body and the mask cover are made of food-grade silica gel, and are integrally formed by injection molding, jetting or injection technology through liquid silica gel after the mask body and the mask cover are opened with a mold according to the 3D human face engineering design.

8. The method for preparing the antibacterial haze-preventing and virus-preventing mask according to claim 7, wherein the method comprises the following steps: the separation filter disc is composed of an outer layer, a middle layer and an inner layer in a composite mode, the outer layer, the middle layer and the inner layer are overlapped together in sequence, the outer layer, the middle layer and the inner layer are welded into a whole through an ultrasonic non-woven fabric spot welding machine in a spot welding mode, or gluing or sewing are used, the separation filter disc is cut according to the size and the shape of the middle groove structure of the face cover in a matched mode, and the sheet-shaped antibacterial separation filter disc is prepared.