CN212306876U - Long-acting dual-antibacterial protective mask with valve - Google Patents

Abstract

The utility model provides a take long-term dual antibiotic protective facial mask of valve 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 a first fabric treated by a waterproof antibacterial compound 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 thermally pressing a second fabric and a microporous membrane; wherein the second fabric is adjacent to the waterproof layer; the skin-friendly layer is positioned on the inner layer of the mask body and is made of a third fabric with an antibacterial effect; and the one-way breather valve is arranged on one side of the central seam of the mask body and is close to the central seam. The utility model has the advantages that: the outer layer is waterproof and antibacterial, and has water resistance for more than 50 times; the middle layer has a separation rate of more than 95% for particles with a particle size of more than 0.3 um; the inner layer is skin-friendly, antibacterial and deodorant; the breather valve can effectively reduce the breathing resistance of the cloth mask, and the tightness of the strap can be adjusted to optimize the tightness.

Description

Long-acting dual-antibacterial protective mask with valve

Technical Field

The utility model relates to a gauze mask, concretely relates to take long-term dual antibiotic protective facial mask of valve belongs to medical treatment fabrics technical field.

Background

Under the national regulation and control and the efforts of numerous textile enterprises, the productivity of the mask gradually keeps up with the demand, and the epidemic situation is also gradually controlled. However, the influence of epidemic situations on people is long-term, and people pay more attention to protective articles such as masks and the like, so that the demands of the masks are always high. Under the sufficient condition of domestic productivity, after the epidemic situation is mild for a period of time, people are more beginning to pay attention to comfort level, convenience, life-span, pleasing to the eye etc. that the gauze mask wore outside having guaranteed up to standard safeguard effect. Current KN95 masks and medical surgical masks have many problems, such as the tendency of the glasses to fog up on the mask wearer; the breathing is not smooth; the rope belt is not suitable for the head shape, and the back ears are easily injured when the mask is worn for a long time; the skin-sticking layer of part of the mask is easy to fluff and prick, so that the skin is stimulated; short service life of the mask and the like.

Therefore, it is urgently needed to develop a mask which is comfortable, convenient and long in service life and can ensure the necessary protective effect.

SUMMERY OF THE UTILITY MODEL

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

(1) the existing mask is uncomfortable to wear, and the length of a strap cannot be adjusted by most masks, so that people with partial large or small faces are very uncomfortable to wear;

(2) if the existing mask is worn for a long time, the belt tightens the back ear, so that discomfort such as skin inflammation, skin damage and the like is caused;

(3) the existing mask is lack of sustainability, short in service life and high in resource loss;

(4) the existing mask has poor air tightness, and the glasses are easy to fog during breathing; and poor air permeability and breathing discomfort;

(5) the existing mask has single functionality;

(6) the respirator is not provided with an expiratory valve, and the exhaled damp and hot air can be discharged from the filter cotton, so that the filter cotton is easily wetted, bacteria are proliferated, and the respiratory resistance is increased.

In order to solve the technical problem, the utility model provides a take long-term dual antibiotic protective facial mask of valve, this gauze mask have prevent droplet, dual long-term antibiotic, the soft characteristic of close skin, also have higher guard action to virus, the aerosol of small particle diameter, and can used by recycle, reduce use cost. The specific technical scheme is as follows:

the utility model provides a take long-term dual antibiotic protective facial mask of valve, 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 a first fabric treated by a waterproof antibacterial compound 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 thermally pressing a second fabric and a microporous membrane; wherein the second fabric is adjacent to the waterproof layer;

the skin-friendly layer is positioned on the inner layer of the mask body and is made of a third fabric with an antibacterial effect;

the one-way breather valve is arranged on one side of the central seam of the mask body and is close to the central seam.

In some embodiments, the first fabric comprises an air permeable woven fabric. Preferably, the breathable woven fabric is a four-side stretch woven polyester fabric with the gram weight of 160gsm and the fineness of 40D.

In some embodiments, the water-proof finishing agent in the compound agent is a fluorine-free water-proof agent or a C6 series water-proof agent, and the antibacterial agent in the compound agent is one or more of a chitosan natural antibacterial agent, a silver ion antibacterial agent and a copper ion antibacterial agent. Preferably, the compound agent is obtained by compounding a fluorine-free waterproof agent and a chitosan natural antibacterial agent. Furthermore, the compound agent contains nonionic penetrant and textile special-purpose stiffening resin slurry.

In some embodiments, the second fabric is selected from electrostatic melt-blown nonwoven, spun-bonded nonwoven, or absorbent cotton, and the microporous membrane is an ePTFE microporous membrane. Preferably, the filter adsorption layer is formed by hot-pressing and attaching spun-bonded non-woven fabric and an ePTFE microporous membrane; wherein, the thickness of ePTFE microporous membrane is 3 ~ 5um, and the aperture is 0.02 ~ 3um, and the spun-bonded non-woven fabrics gram weight is 10 ~ 20 gsm.

In some embodiments, the third fabric is one of cotton, antibacterial cotton, polypropylene, nylon, and polyester.

In some embodiments, the left side and the right side of the mask body are respectively connected with a flat elastic bridle which is strung with a movable silica gel button for adjusting the length of the flat elastic bridle; the upper edge of the mask body is internally provided with a metal strip.

The utility model has the advantages that: the outer layer is waterproof and antibacterial, and has water resistance for more than 50 times; the middle layer has a separation rate of more than 95% for particles with a particle size of more than 0.3 um; the inner layer is skin-friendly, antibacterial and deodorant; the valve can effectively reduce the breathing resistance of the cloth mask; the tightness of the binding belt can be adjusted, and the sealing performance is optimized.

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 the fabric of each layer of the protective mask according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the outer cover of the one-way breather valve of the respirator according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of a bottom cover of a one-way breather valve of a protective mask according to a preferred embodiment of the present invention;

fig. 5 is a schematic view of a cross section of a one-way breather valve of a protective mask according to a preferred embodiment of the present invention.

The reference symbols in the above figures are paraphrased:

100 mask body

110 waterproof layer

120 filtering adsorption layer

121 nonwoven fabric

122 microporous membrane

130 skin-friendly layer

140 metal strip

200 one-way breather valve

210 bottom cover

211 bottom cover air hole

220 outer cover

221 outer cover air hole

230 middle shaft

240 elastic sheet

240a elastic piece middle part

240b elastic sheet edge

300 ear rope

310 elastic belt

320 silica gel button

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.

The utility model provides a take long-term dual antibiotic gauze mask of valve, its overall structure is shown as figure 1. In order to improve the wearing comfort of the conventional mask, a one-way breather valve 200 is installed on the mask body 100. In addition, the mask further comprises ear cords 300 installed on the left and right sides of the mask body 100. What plays long-term dual antibiotic effect is gauze mask body 100, as shown in fig. 2, gauze mask body 100 is multilayer composite construction: a waterproof layer 110 at the outermost layer, a filtering and adsorbing layer 120 at the middle layer, and a skin-friendly layer 130 at the inner layer. The waterproof layer 110 and the skin-friendly layer 130 are made of antibacterial materials, namely, the inner layer and the outer layer are double antibacterial, and the service life of the mask is effectively prolonged. The composition of each layer of the mask body 100 will be described in detail below.

The waterproof layer 110 on the outer layer of the mask is made of low-density woven fabric with good air permeability. The woven fabric has a certain shape, is not easy to deform under the influence of positive and negative breathing pressure, effectively maintains the shape of the mask, is beneficial to realizing the sealing performance of the mask, and reduces the process difficulty in mask manufacturing. The low-density woven fabric is good in air permeability, and the problem that breathing is affected when the mask is attached to the mouth and the nose during breathing is effectively solved by combining the stiffness of the woven fabric. Preferably, the waterproof layer 110 fabric is made of a four-side stretch woven polyester fabric with the gram weight of 160gsm and the fineness of 40D, so that the fabric is thin, breathable and textured, has better coloring performance, and is favorable for energizing functional auxiliaries. Herein, the unit gsm means grams per square meter, i.e. grammage. The fineness 40D means that the 9000 m yarn or fiber has a weight of 40 g in grams at a official moisture regain, and the yarn or fiber is thicker as the gram weight is larger.

The fabric of the waterproof layer 110 is treated by adopting a compounding process of a waterproof auxiliary agent and an antibacterial auxiliary agent. The waterproof assistant in the compounding process is fluorine-free nanometer waterproof agent or C6 series waterproof agent. The domestic C8 series waterproof agents have accumulated toxins PFOA and PFOS which are not metabolized by human bodies, so the C6 series waterproof agents and the fluorine-free nano waterproof agents are relatively environment-friendly choices. The antibacterial auxiliary agent in the compounding process is one or more of chitosan natural antibacterial agent, silver ion antibacterial agent, copper ion antibacterial agent and the like.

Preferably, the fluorine-free nano waterproof agent is selected to be compounded with the chitosan natural antibacterial agent. Wherein, the fluorine-free nano waterproof agent is selected from fluorine-free washable hydrophobic auxiliary agent (see the hydrophobic auxiliary agent disclosed in the patent of patent application No. 201811347432.4 'preparation and application of organic silicon polymer super-hydrophobic fabric finishing agent'), and the compound concentration is 10%. The chitosan natural antibacterial agent is selected from Beijing Jieershuang SCJ-920, and the compound concentration is 4%. The waterproof layer fabric treated by the compounding process has a waterproof grade of 3-4, the living environment of bacteria can be dry due to the waterproof property of the fabric, and the bacteria can be more effectively inhibited by matching the antibacterial effect of chitosan. Through detection, the inhibitor has over 90 percent inhibition rate on three major strains of staphylococcus aureus, escherichia coli and candida albicans, and has the washing resistance effect for over 50 times.

After being treated by the compound agent, 0.5 percent of nonionic penetrant and 0.5 percent of textile special-purpose stiff resin slurry are added according to the adjustment of the stiffness and the hydrophobicity of the cloth surface. The penetration agent is added, so that the problem that the liquid carrying rate is too low to influence the water resistance due to the fact that silicone oil or slurry is left on the surfaces of some fabrics can be avoided. The addition of the resin further strengthens the stiffness of the outer layer fabric.

As shown in fig. 2, the filtering and adsorbing layer 120 is a double-layer structure formed by heat pressing a non-woven fabric 121 and a microporous membrane 122, wherein the non-woven fabric 121 is adjacent to the waterproof layer 110, and the microporous membrane 122 is adjacent to the skin-friendly layer 130. The nonwoven fabric 121 is electrostatic melt-blown nonwoven fabric or spun-bonded nonwoven fabric, or absorbent cotton may be used instead of the nonwoven fabric. The microporous membrane is ePTFE microporous membrane.

The ePTFE (expanded polytetrafluoroethylene) microporous membrane is a microporous low-density membrane made of PTFE (polytetrafluoroethylene) through certain process expansion, and has the inherent properties of PTFE, such as smooth surface, excellent chemical stability, extremely low friction coefficient, high and low temperature resistance, aging resistance and the like. The ePTFE microporous membrane consists of a plurality of very fine fibers, the surface of the ePTFE microporous membrane has a spider-web type microporous structure, the porosity can reach 90 percent, the pore diameter is generally between 0.5 and 3um, and the minimum pore diameter can reach 0.02 um. The ePTFE microporous membrane adopts a physical filtration mode, achieves more than 95% filtration efficiency on particles with the particle size of more than 0.3um, achieves the KN95 grade filtration effect, and is an ideal filtration material. In addition, the ePTFE microporous membrane integrates excellent waterproof and moisture-permeable performances, so that water vapor can penetrate through the ePTFE microporous membrane quickly, and a human body does not feel stuffy.

Preferably, the filtration and adsorption layer 120 is formed by hot-pressing a spun-bonded nonwoven fabric and an ePTFE microporous membrane. The thickness of the ePTFE microporous membrane is 3-5 um, and the pore diameter is 0.02-3 um. The gram weight of the spun-bonded non-woven fabric is 10-20 gsm, and the non-woven fabric mainly plays a role in supporting the ePTFE microporous membrane. The filter and adsorption layer 120 adopts a double-layer structure of spun-bonded non-woven fabric and ePTFE microporous membrane hot-press lamination, and has the advantages that: greatly increasing the adsorption purification rate of the whole system. The reason is that the ePTFE microporous membrane and the spun-bonded non-woven fabric have certain orientation to dust and aerosol with different particle sizes, for example, the spun-bonded non-woven fabric has better protective effect to larger particles, while the ePTFE microporous membrane can block smaller pore size; however, the ePTFE microporous membrane is relatively thin, and if particles of all sizes are filtered only by the ePTFE microporous membrane, the pores are easily blocked, and the service life of the mask is greatly shortened.

The skin-friendly layer 130 is made of one of cotton, antibacterial cotton, polypropylene, nylon and terylene. Preferably, the antibacterial cotton is prepared by adding the bacteriostatic agent into the spinning solution by a pre-spinning injection method on the basis of viscose rayon, uniformly mixing, and then drawing to form. In the process of solidification and forming, the effective groups of the bacteriostatic agent are firmly combined with the active groups in the cellulose molecules through chemical bonds. The antibacterial cotton has biodegradability, is smooth and soft to human skin, has an antibacterial rate of over 90 percent to staphylococcus aureus, escherichia coli and candida albicans, and is unchanged after being washed for 50 times.

As can be seen from the above description of the various layers of the mask body 100, the filtering and adsorbing layer 120 includes an ePTFE microporous membrane 122, which can be water-washed and sterilized; the outer waterproof layer 110 is treated by a waterproof and antibacterial compound process, and is washable for 50 times; the antimicrobial cotton used for the skin-friendly layer 130 also has 50 wash fastness. Under the condition that the disinfection method is correct, the mask has reusability as a whole.

The one-way breather valve 200 is installed at one side of the central slit of the mask body 100 and is as close as possible to the central slit. The one-way breather valve 200 in figure 1 is located near the right of the central seam of the mask body, and because the mask body 100 is in a raised three-dimensional shape, the position is the position farthest away from the skin, so that the problem that the one-way breather valve 200 is cold when the mask is worn in winter is avoided. This position is also the closest to the expiratory airflow, ensuring smooth breathing.

As shown in fig. 3 to 5, the one-way breather valve 200 is a one-way air flow valve, and is composed of a bottom cover 210, an outer cover 220, a central shaft 230, and an elastic sheet 240. The bottom cover 210 and the outer cover 220 are made of plastic, and the elastic piece 240 is made of rubber. The edge of the bottom cover 210 extends outward, and the edge of the bottom cover presses the surface of the skin-friendly layer 130 of the mask and passes through the breather valve mounting hole on the mask body 100. The edge of the outer cover 220 also extends outwards, the edge of the outer cover presses on the surface of the waterproof layer 110 of the mask, and is simultaneously buckled on the bottom cover 210 to form a cavity with the bottom cover 210, and the elastic sheet 240 is located in the cavity. The central shaft 230 is located at the central shaft of the bottom cover 210 or the outer cover 220, and the elastic sheet 240 has a hole at the center, by means of which the central shaft 230 is sleeved. The bottom cover 210 has bottom cover air holes 211 as shown in fig. 4. The outer lid 220 is provided with outer lid air holes 221 as shown in fig. 3. The central portion 240a of the elastic piece is thinner, and the edge 240b of the elastic piece is thickened, and the portion around the central axis 230 is thickened. As the elastic piece 240 is deformed, the elastic piece edge 240b may fit the bottom cover 210 to block the bottom cover air holes 211.

The one-way breather valve 200 functions by the following mechanism: the positive pressure of the air exhaled by the mouth and nose part blows the elastic sheet 240 to expose the gap, and water vapor in the mask is rapidly exhausted from the gap to the outside of the mask through the outer cover air hole 221, so that the stuffiness of the mask during use is reduced; the negative pressure during inhalation will automatically suck the elastic sheet 240 back, the edge 240b of the elastic sheet is attached to the bottom cover 210, the air hole 211 of the bottom cover is blocked, and the one-way breather valve 200 is closed at this time, so as to prevent the pollutants sucked into the external environment from entering the inlet cover. The one-way breather valve 200 effectively reduces the breathing resistance of the mask, is more comfortable to wear, and also avoids fogging on the lenses of the glasses wearers.

When the waterproof layer 110 of the outer layer is sewn with the skin-friendly layer 130 of the inner layer, holes are reserved on the left and right sides of the mask body 100, and the ear strings 300 pass through the holes. The ear rope 300 is composed of a flat elastic band 310 and a movable silica gel button 320, and the movable silica gel button 320 is threaded on the flat elastic band 310 and can move to adjust the length of the flat elastic band 310 and the tightness of the mask. The flat elastic belt 310 is attached to the skin, has a large force-bearing area, has little oppression on the back ear, and is comfortable to wear for a long time.

The upper edge of the mask body 100 is provided with a metal strip 140, which is inserted into the waterproof layer 110 of the outer layer of the mask body 100 and the skin-friendly layer 130 of the inner layer when being sewn. The metal strip 140 is located the bridge of the nose department that the gauze mask wore, can make the gauze mask go up along more laminating facial profile through pinching it, effectively increases the gas tightness of gauze mask, prevents to fog on glasses person's the lens.

Compared with the prior mask, the utility model provides a take long-term dual antibiotic protective facial mask of valve has following a plurality of advantages:

(1) the bridle adopts an adjustable silica gel slipknot;

(2) the strap is an elastic flat strap, and the strap is made of soft all-cotton material which is close to skin, so that the ear tightening problem caused by wearing the mask for a long time is effectively relieved;

(3) the outer layer is waterproof and antibacterial, the waterproof treatment can dry the living environment of bacteria, the survival rate of the bacteria is reduced, and the antibacterial effect can be greatly enhanced by matching with antibacterial components;

(4) the inner layer adopts antibacterial cotton, so that bacteria on the face of the mask close to the skin can be effectively prevented from breeding, and the stimulation of the fabric to the skin is reduced;

(5) the design of the valve is adopted, so that the breathing resistance of the mask is greatly reduced, the breathing is smoother, and the problem of fogging of glasses wearing the mask is alleviated.

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 (7)

1. The utility model provides a take long-term dual antibiotic protective facial mask of valve has the gauze mask body, its characterized in that, the gauze mask body includes:

the waterproof layer is positioned on the outer layer of the mask body and is made of a first fabric treated by a waterproof antibacterial compound 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 thermally pressing a second fabric and a microporous membrane; wherein the second fabric is proximate to the waterproof layer;

the skin-friendly layer is positioned on the inner layer of the mask body and is made of a third fabric with an antibacterial effect;

the one-way breather valve is installed on one side of the center seam of the mask body and close to the center seam.

2. The valved, long-lasting, dual-antibacterial protective mask according to claim 1, wherein said first fabric comprises a breathable woven fabric.

3. The long-acting dual-antibacterial protective mask with a valve according to claim 2, wherein the air-permeable woven fabric is a four-side stretch woven polyester fabric with a grammage of 160gsm and a fineness of 40D.

4. The mask of claim 1, wherein the second fabric is selected from the group consisting of electrostatic melt-blown nonwoven, spun-bonded nonwoven, and absorbent cotton, and the microporous membrane is an ePTFE microporous membrane.

5. The long-acting dual-antibacterial protective mask with a valve according to claim 4, wherein the filter adsorption layer is formed by hot-pressing and attaching the spun-bonded non-woven fabric and the ePTFE microporous membrane; wherein, the thickness of ePTFE microporous membrane is 3 ~ 5um, and the aperture is 0.02 ~ 3um, the spun-bonded non-woven fabrics gram weight is 10 ~ 20 gsm.

6. The long-acting dual-antibacterial protective mask with a valve according to claim 1, wherein the third fabric is one of cotton, antibacterial cotton, polypropylene, nylon and terylene.

7. The long-acting dual-antibacterial protective mask with the valve according to claim 1, wherein the left and right sides of the mask body are respectively connected with flat elastic bands, and the flat elastic bands are strung with movable silica gel buttons for adjusting the length of the flat elastic bands; the upper edge of the mask body is internally provided with a metal strip.

Images