CN212266938U - Protective mask - Google Patents
Protective mask Download PDFInfo
- Publication number
- CN212266938U CN212266938U CN202021371286.1U CN202021371286U CN212266938U CN 212266938 U CN212266938 U CN 212266938U CN 202021371286 U CN202021371286 U CN 202021371286U CN 212266938 U CN212266938 U CN 212266938U
- Authority
- CN
- China
- Prior art keywords
- porous membrane
- layer
- membrane material
- material layer
- protective mask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model belongs to the technical field of protective articles, in particular to protective facial mask. The utility model provides a multifunctional ear rope sleeve, which comprises a main body and an ear rope sleeve, wherein the main body comprises a fabric layer, a first porous membrane material layer, a double-component fabric layer, a second porous membrane material layer and a non-woven fabric layer which are sequentially stacked from outside to inside; a hot-melt fiber net is arranged between the fabric layer and the first porous membrane material layer; the first porous membrane material layer and the second porous membrane material layer are independently a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric; at least one layer of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane. First porous membrane material layer and second porous membrane material layer form double-deck porous membrane structure, be favorable to protective facial mask to realize refusing liquid, refuse the performance of fog, when protective facial mask washs, be favorable to guaranteeing that protective facial mask layer structure does not change, and not filter through electrostatic action, can wash.
Description
Technical Field
The utility model belongs to the technical field of protective articles, in particular to protective facial mask.
Background
As an important protective article, protective masks are getting more and more attention from people. Protective mask filtration efficiency is high and the resistance of breathing in is low, then protective mask has good guard action and wears the impression, but when filtration efficiency improved, the resistance of breathing in often risees thereupon, and it is difficult two complete.
The melt-blown non-woven fabric is a fiber aggregate formed by self consolidation of superfine fibers, the specific surface area of the fibers is large, the adsorption capacity to particles is strong, the fibers are randomly distributed to form a large number of complex three-dimensional micro pores, the filtering efficiency is high, and the air suction resistance is low due to the high content of the micro pores, so that the melt-blown non-woven fabric is widely applied to a main body material of a protective mask. For example, the surface of the melt-blown polypropylene electret filter material after electrostatic treatment is electrostatically charged, and fine particles can be adsorbed by electrostatic attraction, so that the filtration efficiency is remarkably improved under the precondition that the air suction resistance is not increased. However, the high efficiency of the melt-blown polypropylene electret filter material during air filtration depends on the electric charge of the melt-blown polypropylene electret filter material to a great extent, when the melt-blown polypropylene electret filter material is exposed to a special environment, the electrostatic effect of the material can be reduced by moisture, polar solvent, oily smoke and the like, and particularly when a mask containing the filter material is cleaned, soaked and disinfected, the electrostatic effect of the filter material can be reduced, the structure of a melt-blown fiber net in the protective mask can be damaged, and the filtration efficiency of the protective mask is greatly reduced. Research shows that after the melt-blown polypropylene electret filter material is soaked in pure alcohol, the filtering efficiency of the filter material is reduced from 99.58% to 77.42%, and the filtering efficiency of the protective mask is greatly reduced.
In order to ensure the filtering efficiency of the protective mask and realize the purpose that the protective mask can be washed by water, the waterproof and breathable films for Chinese patents with the publication numbers of CN105901803A, CN106174791A, CN108354243A and CN108851288A protect the filter paper and the activated carbon cloth and prevent the filter paper and the activated carbon cloth from contacting with water, but the suction resistance of the protective mask can be increased by the technical scheme. At present, no washable protective mask which has high filtering efficiency under the condition of not increasing the air suction resistance is reported.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a protective mask, which has the features of high filtering efficiency, low air suction resistance, high efficiency, liquid and mist resistance, and cleanability.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
the utility model provides a protective mask, which comprises a main body and an ear rope sleeve, wherein the main body comprises a fabric layer, a first porous membrane material layer, a two-component fabric layer, a second porous membrane material layer and a non-woven fabric layer which are sequentially stacked from outside to inside; a hot-melt fiber net is arranged between the fabric layer and the first porous membrane material layer;
the first porous membrane material layer and the second porous membrane material layer are independently a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric; at least one layer of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane.
Preferably, the first porous membrane material layer and the second porous membrane material layer have a porosity of 80% or more and an average pore diameter of 3 to 5 μm.
Preferably, the filtration efficiency of the first porous membrane material layer and the filtration efficiency of the second porous membrane material layer are respectively 50-80%, and the air suction resistance is respectively less than or equal to 60 Pa.
Preferably, the gram weight of the melt-blown non-woven fabric is 30-50 g/m2The melt-blown nonwoven fabric of (1).
Preferably, the fabric layer is a nonwoven fabric or a woven fabric.
Preferably, the air permeability of the fabric layer is more than or equal to 500 mm/s.
Preferably, the bicomponent fabric layer comprises first fibers and second fibers;
the first fibers are low-melting-point fibers; the melting point of the low-melting-point fibers is 130-160 ℃;
the second fiber is a high melting point fiber or a non-melting fiber; the melting point of the high-melting-point fiber is higher than that of the low-melting-point fiber, and the difference of the melting points is more than or equal to 30 ℃.
Preferably, the gram weight of the bicomponent fabric layer is 30-45 g/m2。
Preferably, the nonwoven fabric layer is a melt-blown nonwoven fabric or a spunbond nonwoven fabric.
Preferably, the air permeability of the non-woven fabric layer is more than or equal to 500 mm/s.
The utility model provides a protective mask, which comprises a main body and an ear rope sleeve, wherein the main body comprises a fabric layer, a first porous membrane material layer, a two-component fabric layer, a second porous membrane material layer and a non-woven fabric layer which are sequentially stacked from outside to inside; a hot-melt fiber net is arranged between the fabric layer and the first porous membrane material layer; the first porous membrane material layer and the second porous membrane material layer are independently a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric; at least one layer of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane. In the utility model, the fabric layer provides higher strength and larger initial modulus, and can intercept larger particles through inertial collision effect as a reinforcing layer of the protective mask; the aperture is reduced in order to pursue high filtration efficiency by the traditional single-layer porous membrane, the porosity can be reduced and the air suction resistance can be improved under the condition of obtaining a small aperture, and the utility model provides a first porous membrane material layer and a second porous membrane material layer form a double-layer porous membrane structure, and the porosity is unchanged under the condition of reducing the aperture through the superposition of the double-layer porous membrane, so that the using effect of low air suction resistance is obtained under the condition of higher porosity, and the contact of water vapor and a double-component fabric layer can be blocked, thereby being beneficial to realizing the performance of liquid and mist resistance of the protective mask, and being beneficial to ensuring that the layer structure of the protective mask does not change when the protective mask is cleaned; the bi-component fabric layer and the non-woven fabric layer cooperate with other interlayer structures to further improve the filtering performance of the protective mask under the condition of smaller air suction resistance; the hot melt fiber net realizes good adhesion of the fabric layer and the first porous membrane material layer, avoids the use of protective mask adhesives, prevents the increase of the air suction resistance of the protective mask due to the existence of the adhesives, and is safer and more environment-friendly. The traditional melt-blown fabric protective mask is filtered by the electrostatic principle, and the electrostatic action disappears after washing, so that the traditional melt-blown fabric protective mask cannot be washed by water; the utility model provides a protective facial mask is different with traditional melt-blown cloth protective facial mask, reaches the filtration demand through the micropore, consequently does not receive the washing influence, still has good filtering quality and lower air suction resistance after the washing.
The test result of the embodiment shows that the utility model provides a protective mask, under the 85L/min detection flow condition, the NaCl particulate matter filtration efficiency is 97.1-98.2%, and the resistance of breathing in is 135-175 Pa; the filtering efficiency of oil particles is 98.1-98.7%, and the air suction resistance is 160-170 Pa.
Drawings
Fig. 1 is a structural schematic explosion diagram of the protective mask main body provided by the present invention, wherein 1 is a fabric layer, 2 is a first porous membrane material layer, 3 is a two-component fabric layer, 4 is a second porous membrane material layer, and 5 is a non-woven fabric layer.
Detailed Description
The utility model provides a protective mask, which comprises a main body and an ear rope sleeve, wherein the main body comprises a fabric layer, a first porous membrane material layer, a two-component fabric layer, a second porous membrane material layer and a non-woven fabric layer which are sequentially stacked from outside to inside; a hot-melt fiber net is arranged between the fabric layer and the first porous membrane material layer;
the first porous membrane material layer and the second porous membrane material layer are independently a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric; at least one layer of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane.
In the present invention, unless otherwise specified, each of the substances is a commercially available product well known to those skilled in the art.
The structure of the protective mask body according to the present invention is described below with reference to fig. 1, in fig. 1, 1 is a fabric layer, 2 is a first porous membrane material layer, 3 is a two-component fabric layer, 4 is a second porous membrane material layer, and 5 is a nonwoven fabric layer.
The utility model provides a protective mask's main part includes the fabric layer. In the present invention, the fabric layer is preferably a nonwoven fabric or a woven fabric. In the utility model, when the fabric layer is a woven fabric, the number of warp yarns and weft yarns of the woven fabric is preferably 28-36.1 tex, and more preferably 30-36.1 tex; the warp density of the woven fabric is preferably 190-200 pieces/10 cm, more preferably 190-195 pieces/10 cm, and the weft density is preferably 160-180 pieces/10 cm, more preferably 160-170 pieces/10 cm. In the present invention, when the fabric layer is a nonwoven fabric, the nonwoven fabric preferably has a grammage of 80 to 100g/m2More preferably 85 to 95g/m2。
In the present invention, the fabric layer is preferably made of a single-component material or a two-component material. When the fabric layer is made of a single-component material, the material of the fabric layer is preferably terylene. When the fabric layer is made of a two-component material, the fabric layer preferably comprises a first component and a second component; the first component is preferably a low melting point fiber; the melting point of the low-melting-point fibers is preferably 130-160 ℃, and more preferably 130-150 ℃; the second component is preferably a high melting point fiber or a non-melting fiber; the melting point of the high-melting-point fiber is higher than that of the low-melting-point fiber, and the difference of the melting points is more than or equal to 30 ℃; the first component isThe amount is preferably 30 to 50%, more preferably 30 to 40% of the total mass of the first component and the second component. In one embodiment of the present invention, the fabric layer is a bicomponent spunbond nonwoven fabric composed of polyethylene terephthalate (PET) fibers and polypropylene (PP) fibers; the melting point of the polyethylene terephthalate fiber is 230 ℃; the melting point of the polypropylene fiber is 130 ℃; the mass ratio of the polyethylene terephthalate fibers to the polypropylene fibers is 7: 3; the gram weight of the bicomponent spun-bonded non-woven fabric is 100g/m2. In the present invention, the air permeability of the fabric layer is preferably not less than 500 mm/s.
The utility model provides a protective mask's main part is including setting up the first porous membrane material layer of fabric layer internal surface. In the present invention, the first porous membrane material layer is preferably a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric. In the present invention, the porosity of the first porous film material layer is preferably not less than 80%, and the average pore diameter is preferably 3 to 5 μm, and more preferably 3.5 to 4.5 μm. In the utility model, the filtration efficiency of the first porous membrane material is preferably 50-80%, and more preferably 55-75%; the suction resistance is preferably less than or equal to 60 Pa. When the first porous membrane material layer is melt-blown non-woven fabric, the gram weight of the melt-blown non-woven fabric is preferably 30-50 g/m2More preferably 30 to 40g/m2。
In the present invention, a hot-melt fiber web is provided between the fabric layer and the first porous film material layer. In the utility model, when the fabric layer is made of single-component material, the melting point of the hot-melt fiber net is preferably the same as that of the fabric layer; when the fabric layer is made of a bicomponent material, the melting point of the hot-melt fiber net is preferably the same as that of the low-melting-point fiber. In the present invention, the gram weight of the hot-melt fiber web is preferably 10 to 15g/cm2More preferably 10 to 13g/cm2. In the present invention, the material of the hot-melt fiber web is preferably polyamide.
The utility model provides a protective mask's main part including set up in the two ingredient fabric layers of first porous membrane material layer internal surface. In bookIn the utility model, the two-component fabric layer comprises a first fiber and a second fiber. In the present invention, the first fibers are preferably low melting point fibers; the melting point of the low-melting-point fibers is preferably 130-160 ℃, and more preferably 135-155 ℃. In the present invention, the second fibers are preferably high melting point fibers or non-melting fibers; the melting point of the high-melting-point fiber is higher than that of the low-melting-point fiber, and the difference of the melting points is preferably more than or equal to 30 ℃. In the present invention, the mass of the first fibers is preferably 30 to 50% of the total mass of the first fibers and the second fibers, and more preferably 30 to 40%. In the utility model discloses in, the gram weight of two ingredient fabric layers is preferred 30 ~ 45g/m2More preferably 35 to 45g/m2. In one embodiment of the present invention, the bicomponent fabric layer is a bicomponent fiber web composed of polyethylene terephthalate (PET) fibers and polypropylene (PP) fibers; the melting point of the polyethylene terephthalate fiber is 230 ℃; the melting point of the polypropylene fiber is 130 ℃; the mass ratio of the polyethylene terephthalate fibers to the polypropylene fibers is 7: 3.
the utility model provides a protective mask's main part is including setting up the second porous membrane material layer of bi-component fabric layer internal surface. In the present invention, the second porous membrane material layer is preferably a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric. In the present invention, the porosity of the second porous film material layer is preferably not less than 80%, and the average pore diameter is preferably 3 to 5 μm, and more preferably 3.5 to 4.5 μm. In the utility model, the filtration efficiency of the second porous membrane material is preferably 50-80%, and more preferably 55-75%; the resistance is preferably less than or equal to 60 Pa. In the present invention, when the second porous film material layer is a melt-blown nonwoven fabric, the basis weight of the melt-blown nonwoven fabric is preferably 30 to 50g/m2More preferably 30 to 40g/m2。
In the present invention, at least one of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane.
The utility model provides a protective mask's main part is including setting up second porous membrane material layer internal surfaceA facial nonwoven layer. In the utility model, the air permeability of the non-woven fabric layer is preferably more than or equal to 500 mm/s. In the present invention, the nonwoven fabric layer preferably has a grammage of 80 to 100g/m2More preferably 85 to 95g/m2. In the present invention, the nonwoven fabric layer is preferably a melt-blown nonwoven fabric or a spunbond nonwoven fabric. In the present invention, the nonwoven fabric layer is preferably a bicomponent nonwoven fabric, more preferably a bicomponent spunbond nonwoven fabric; the bicomponent nonwoven fabric preferably comprises a component A and a component B; the part A is preferably low-melting-point fiber; the melting point of the low-melting-point fibers is preferably 130-160 ℃, and more preferably 130-150 ℃; the component B is preferably high-melting point fiber or infusible fiber; the melting point of the high-melting-point fiber is higher than that of the low-melting-point fiber, and the difference of the melting points is more than or equal to 30 ℃; the mass of the component A is preferably 30-50% of the total mass of the component A and the component B, and more preferably 30-40%. In one embodiment of the present invention, the nonwoven fabric layer is a bicomponent spunbond nonwoven fabric composed of polyethylene terephthalate fibers and polypropylene fibers; the melting point of the polyethylene terephthalate fiber is 230 ℃; the melting point of the polypropylene fiber is 130 ℃; the mass ratio of the polyethylene terephthalate fibers to the polypropylene fibers is 7: 3; the gram weight of the bicomponent spun-bonded non-woven fabric is 100g/m2。
In the present invention, the preferred material of the ear rope sleeve is pure cotton material.
The utility model discloses in, protective facial mask's preparation method, including following step:
laminating the layers of materials according to the laminating sequence, and then carrying out hot rolling to obtain a composite layer of the protective mask main body;
cutting the composite layer of the protective mask body according to the size of the protective mask body to obtain the protective mask body;
and connecting the protective mask main body with an ear rope sleeve to obtain the protective mask.
The utility model discloses carry out the hot rolling after with each layer material lamination according to range upon range of order, obtain protective mask main part composite bed.
The utility model discloses in, each layer material is unanimous with above-mentioned technical scheme each layer structural material of protective facial mask main part, no longer gives unnecessary details here.
The utility model discloses in, each layer material is carried through defeated net curtain after the material lamination, and feeding hot rolling system, through the last warming mill of hot rolling system and lower engraved roll add the heat and pressurize to the material (wherein warming mill and fabric layer material contact, engraved roll and non-woven fabrics layer material contact) that range upon range of placing, carries out the hot rolling. In the utility model, the temperature of hot rolling is preferably 150-160 ℃, and more preferably 150-155 ℃; the pressure is preferably 250N/cm2. The utility model discloses in, the linear velocity of going up the warming mill during hot rolling and lower engraved roll is preferred 6 ~ 8m/min, more preferred 6 ~ 7 m/min.
After obtaining protective facial mask main part composite bed, the utility model discloses it is right according to protective facial mask main part size protective facial mask main part composite bed is tailor, obtains the protective facial mask main part.
The utility model has no special limit to the size of the main body of the protective mask, and is subject to the public knowledge in the field or the requirements of customers. The utility model discloses it does not have special restriction to tailor the technology, adopt the art technical staff familiar tailor can.
After obtaining the protective mask main body, the utility model discloses will the protective mask main body is connected with the ear rope sling, obtains protective mask.
The utility model discloses it is not specially limited to be right the mode that protective facial mask main part is connected with the ear rope sling to the well-known mode of skilled person in the art can, specifically, like wear-type, ear-wearing formula or neck wear-type. The utility model discloses it is right the technology that protective facial mask main part and ear rope sling are connected does not have special limited, adopt the well-known connection technology of technical personnel in the field can, it is concrete, like hot pressing.
In order to further explain the present invention, the following detailed description is made on a protective mask according to the present invention, but it should not be construed as limiting the scope of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Sequentially stacking a fabric layer, a hot-melt fiber net, a first porous membrane material layer, a double-component fabric layer, a second porous membrane material layer and a non-woven fabric layer from outside to inside, wherein the fabric layer is made of polyester filament fabric, warp yarns and weft yarns are both 36.1tex, the warp density is 190 pieces/10 cm, and the weft density is 160 pieces/10 cm; the first porous membrane material layer is a polytetrafluoroethylene porous membrane, the average pore diameter is 3.9 mu m, and the porosity is 86%; the hot melt fiber net is a polyamide fiber net with the melting point of 130 ℃ and the gram weight of 10g/cm2(ii) a The bicomponent fabric layer is a fiber net formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, wherein the mass ratio of PET to PP is 7: 3, the gram weight of the bicomponent fabric layer is 45g/cm2(ii) a The second porous membrane material layer is a polytetrafluoroethylene porous membrane, the average pore diameter is 3.9 mu m, and the porosity is 86%; the non-woven fabric layer is a bicomponent spun-bonded non-woven fabric formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, and the gram weight is 100g/cm2；
Feeding the layered materials into a hot rolling system, heating and pressurizing by an upper heating roller and a lower engraved roller at 150 deg.C and 150N/cm, and hot rolling2The linear speed of the heating roller and the engraving roller is 6m/min, and a composite layer of the protective mask main body is obtained; cutting the composite layer of the protective mask body according to the size of the protective mask body to obtain the protective mask body; and connecting the protective mask main body with an ear rope sleeve to obtain the protective mask.
The filtration efficiency and the inhalation resistance of the obtained protective mask are tested according to GB 2626 plus 2019 respiratory protection self-priming filtration type particulate-proof respirator:
1. filtering NaCl particles, wherein the detection flow is 85L/min, the measured filtering efficiency is 98.2%, the air suction resistance is 135Pa, and the KN95 requirement is met;
2. filtering particulate matters of oil (DOP), wherein the measured flow rate is 85L/min, the measured filtering efficiency is 98.7%, the air suction resistance is 160Pa, and the requirements of KP95 are met.
Example 2
Sequentially stacking a fabric layer, a hot-melt fiber net, a first porous membrane material layer, a bi-component fabric layer, a second porous membrane material layer and a non-woven fabric layer from outside to inside, wherein the fabric layer is made of bi-component spun-bonded non-woven fabric and consists of PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, and the gram weight of the bi-component spun-bonded non-woven fabric is 100g/cm2(ii) a The first porous membrane material layer is a polytetrafluoroethylene porous membrane, the average pore diameter is 3.9 mu m, and the porosity is 86%; the hot melt fiber net is a polyamide fiber net with the melting point of 130 ℃ and the gram weight of 10g/cm2(ii) a The bicomponent fabric layer is a fiber net formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, wherein the mass ratio of PET to PP is 7: 3, the gram weight of the bicomponent fabric layer is 45g/cm2(ii) a The second porous membrane material layer is a polytetrafluoroethylene porous membrane, the average pore diameter is 3.9 mu m, and the porosity is 86%; the non-woven fabric layer is a bicomponent spun-bonded non-woven fabric formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, and the gram weight is 100g/cm2；
Feeding the layered materials into a hot rolling system, heating and pressurizing by an upper heating roller and a lower engraved roller at 150 deg.C and 150N/cm, and hot rolling2The linear speed of the heating roller and the engraving roller is 6m/min, and a composite layer of the protective mask main body is obtained; cutting the composite layer of the protective mask body according to the size of the protective mask body to obtain the protective mask body; and connecting the protective mask main body with an ear rope sleeve to obtain the protective mask.
The filtration efficiency and the inhalation resistance of the obtained protective mask are tested according to GB 2626 plus 2019 respiratory protection self-priming filtration type particulate-proof respirator:
1. filtering NaCl particles, wherein the detection flow is 85L/min, the measured filtering efficiency is 97.2 percent, the air suction resistance is 153Pa, and the KN95 requirement is met;
2. filtering particulate matters of oil (DOP), wherein the measured flow rate is 85L/min, the measured filtering efficiency is 98.1 percent, the air suction resistance is 170Pa, and the requirements of KP95 are met.
Example 3
Sequentially stacking a fabric layer, a hot-melt fiber net, a first porous membrane material layer, a bi-component fabric layer, a second porous membrane material layer and a non-woven fabric layer from outside to inside, wherein the fabric layer is made of bi-component spun-bonded non-woven fabric and consists of PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, and the gram weight of the bi-component spun-bonded non-woven fabric is 100g/cm2(ii) a The first porous membrane material layer is a polytetrafluoroethylene porous membrane, the average pore diameter is 3.9 mu m, and the porosity is 86%; the hot melt fiber net is a polyamide fiber net with the melting point of 130 ℃ and the gram weight of 10g/cm2(ii) a The bicomponent fabric layer is a fiber net formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, wherein the mass ratio of PET to PP is 7: 3, the gram weight of the bicomponent fabric layer is 45g/cm2(ii) a The second porous membrane material layer is melt-blown non-woven fabric with the gram weight of 30g/m2The filtration efficiency of the melt-blown nonwoven fabric is 81%, and the air suction resistance is 55 Pa; the non-woven fabric layer is a bicomponent spun-bonded non-woven fabric formed by mixing PET fibers with the melting point of 230 ℃ and PP fibers with the melting point of 130 ℃, and the gram weight is 100g/cm2；
Feeding the layered materials into a hot rolling system, heating and pressurizing by an upper heating roller and a lower engraved roller at 150 deg.C and 150N/cm, and hot rolling2The linear speed of the heating roller and the engraving roller is 6m/min, and a composite layer of the protective mask main body is obtained; cutting the composite layer of the protective mask body according to the size of the protective mask body to obtain the protective mask body; and connecting the protective mask main body with an ear rope sleeve to obtain the protective mask.
The filtration efficiency and the inhalation resistance of the obtained protective mask are tested according to GB 2626 plus 2019 respiratory protection self-priming filtration type particulate-proof respirator:
filtering NaCl particles, wherein the detection flow is 85L/min, the detected filtering efficiency is 97.1 percent, the air suction resistance is 175Pa, and the requirement of KN95 is met.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A protective mask comprises a main body and an ear rope sleeve, and is characterized in that the main body comprises a fabric layer, a first porous membrane material layer, a two-component fabric layer, a second porous membrane material layer and a non-woven fabric layer which are sequentially stacked from outside to inside; a hot-melt fiber net is arranged between the fabric layer and the first porous membrane material layer;
the first porous membrane material layer and the second porous membrane material layer are independently a polytetrafluoroethylene porous membrane or a melt-blown nonwoven fabric; at least one layer of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane.
2. The protective mask according to claim 1, wherein the first porous membrane material layer and the second porous membrane material layer have a porosity of 80% or more independently and an average pore diameter of 3 to 5 μm independently.
3. The protective mask according to claim 1 or 2, wherein the first porous membrane material layer and the second porous membrane material layer independently have a filtration efficiency of 50 to 80% and an air intake resistance of 60Pa or less.
4. The protective mask according to claim 1, wherein the melt-blown nonwoven fabric has a grammage of 30 to 50g/m2The melt-blown nonwoven fabric of (1).
5. The protective mask of claim 1 wherein said fabric layer is a nonwoven or woven fabric.
6. The protective mask of claim 1 or 5 wherein said fabric layer has an air permeability of greater than or equal to 500 mm/s.
7. The protective mask of claim 1 wherein said bicomponent fabric layer comprises first fibers and second fibers;
the first fibers are low-melting-point fibers; the melting point of the low-melting-point fibers is 130-160 ℃;
the second fiber is a high melting point fiber or a non-melting fiber; the melting point of the high-melting-point fiber is higher than that of the low-melting-point fiber, and the difference of the melting points is more than or equal to 30 ℃.
8. The protective mask of claim 1 or 7 wherein said bicomponent fabric layer has a grammage of 30-45 g/m2。
9. The protective mask of claim 1 wherein said nonwoven layer is a meltblown nonwoven or a spunbond nonwoven.
10. The protective mask according to claim 1 or 9, wherein the air permeability of the nonwoven fabric layer is not less than 500 mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021371286.1U CN212266938U (en) | 2020-07-13 | 2020-07-13 | Protective mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021371286.1U CN212266938U (en) | 2020-07-13 | 2020-07-13 | Protective mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212266938U true CN212266938U (en) | 2021-01-01 |
Family
ID=73900195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021371286.1U Active CN212266938U (en) | 2020-07-13 | 2020-07-13 | Protective mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212266938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674136A (en) * | 2020-07-13 | 2020-09-18 | 山东中恒景新碳纤维科技发展有限公司 | Protective mask and preparation method thereof |
-
2020
- 2020-07-13 CN CN202021371286.1U patent/CN212266938U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674136A (en) * | 2020-07-13 | 2020-09-18 | 山东中恒景新碳纤维科技发展有限公司 | Protective mask and preparation method thereof |
| CN111674136B (en) * | 2020-07-13 | 2023-09-05 | 山东中恒景新碳纤维科技发展有限公司 | Protective mask and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5875180B2 (en) | Improved filter media with nanoweb layers | |
| CN101674873B (en) | Bag house filters and media | |
| JP5710979B2 (en) | Breathable water resistant clothing | |
| CN101854818B (en) | Contamination control garments | |
| CN107645916A (en) | It is built-in with the mouth mask of adsorbed film | |
| JP2001516237A (en) | Facial masks including spunbond, meltblown and spunbond laminates | |
| JPH0360712A (en) | Filter cloth for collecting dust | |
| EP1953286A1 (en) | Fabric and mask | |
| CN111674136B (en) | Protective mask and preparation method thereof | |
| CN101983097A (en) | Air filtration medium with improved dust loading capacity and improved resistance to high humidity environment | |
| WO1987005952A1 (en) | Non-woven fabric comprising at least one spunbonded layer | |
| JP2010520385A (en) | Breathable water resistant clothing | |
| JP2007282720A (en) | Fabric for mask having moisture retentivity, and hygienic mask using it | |
| CN212266938U (en) | Protective mask | |
| CN113085306A (en) | Reusable mask filter material and preparation method thereof | |
| WO2020137605A1 (en) | Fiber structure and application thereof | |
| JPH10512018A (en) | Multilayer nonwoven web laminate | |
| CN210706410U (en) | Activated carbon non-woven fabric for mask | |
| JP6099330B2 (en) | filter | |
| US20220219105A1 (en) | Nanofiber filter material and resperatory system and air filtering article | |
| JP6011738B1 (en) | Protective material, protective clothing, and method of manufacturing regenerative protective clothing | |
| JP6776721B2 (en) | Manufacturing methods for protective materials, protective clothing, and recycled protective clothing | |
| CN212472695U (en) | PTFE membrane composite material | |
| CN220149791U (en) | Nanofiber melt-blown composite non-woven fabric | |
| JP2015073874A (en) | Mask |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |