CN111424360A

CN111424360A - Long-acting reusable N90-grade mask and preparation method thereof

Info

Publication number: CN111424360A
Application number: CN202010323820.XA
Authority: CN
Inventors: 吴宁西; 刘惠林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-07-17
Also published as: WO2021212542A1

Abstract

The invention discloses a long-acting reusable N90-grade mask and a preparation method thereof, wherein the mask comprises a mask body, the mask body is composed of an inner layer and an outer layer, the inner layer is made of superfine anhydrous drawn PP false-twist textured yarns above 75D or below, the outer layer is made of single 6 or double 6 high-strength air textured yarns above 160D or below nylon or is made of polyester fibers above 75D or below and is stacked with polypropylene false-twist textured yarns in a picking warp-weft staggered mode to achieve a single-layer structure. The disposable protective mask/medical surgical mask can thoroughly solve the problem that the filtering efficiency is reduced and the disposable protective mask/medical surgical mask directly loses efficacy after being worn for 4 hours, has a physical structure, constant density and long-acting and stable filtering effect, can be washed by water and machine and directly sprayed and killed by alcohol, can realize the pole setting and the image formation, reduce the expenditure of epidemic prevention consumption during a large-scale epidemic situation, save social cost, improve economic benefits and reduce the expenditure burden of enterprises and individuals.

Description

Long-acting reusable N90-grade mask and preparation method thereof

Technical Field

The invention relates to the field of masks, in particular to a long-acting reusable N90-grade mask and a preparation method thereof.

Background

The gauze mask on the existing market is disposable and is thrown, the dependence on the raw materials of melt-blown cloth is large, if the gauze mask is medical grade, an aseptic workshop is needed, the whole investment is large, the output cost-effectiveness ratio is low, the industrial gauze mask is the same, the gauze mask is difficult to adjust when encountering large-scale epidemic situation propagation, and is easy to produce more environmental sanitation pressure and environmental pollution, and the traditional disposable gauze mask can become a new propagation source point after being discarded.

Disclosure of Invention

The invention aims to solve the problems of the prior art by providing a long-acting reusable N90-grade mask and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a N90 level gauze mask that possesses long-term repeatedly use and preparation method thereof, includes the gauze mask body, the gauze mask body comprises inlayer and outer, the inlayer adopts the anhydrous wire drawing PP false twist texturing yarn of superfine denier more than 75D or below, outer adoption nylon 160D more than or less than 6 or two 6 high strength air texturing yarns or adopt wash more than 75D or below with utensil polypropylene fibre false twist texturing yarn throw in the crisscross stromatolite of shuttle longitude and latitude and realize the individual layer tissue.

A preparation method of a long-acting reusable N90-grade mask comprises the following specific steps:

the method comprises the following steps: the inner layer is made of superfine anhydrous drawn PP false twist textured yarn more than or equal to 75D;

step two: the outer layer adopts single 6 or double 6 high strength air textured yarns above or below nylon 160D, or adopts warp and weft staggered lamination with polypropylene false twist textured yarns above or below polyester 75D to realize single layer organization;

step three: then, two special yarns are woven in a warp-weft two-layer mutually staggered mode in a picking mode to form a single-layer double-density screen window type structure.

The invention has the beneficial effects that: the disposable protective mask/medical surgical mask can thoroughly solve the problem that the filtering efficiency is reduced and the filter is directly ineffective after the disposable protective mask/medical surgical mask is worn for 4 hours, has a physical structure, constant density and long-acting and stable filtering effect, can be washed by water and machine and directly sprayed by alcohol, can reduce the epidemic prevention consumption expenditure during a large-scale epidemic situation by standing a pole to see a shadow, saves the social cost, improves the economic benefit, reduces the expenditure burden of enterprises and individuals, calculates the use cost by one year by using a single-guide mask made of single-guide fabric, still saves the use cost by 60-80 percent compared with the existing disposable sterilization-grade surgical mask and the industrial-grade N90-95 mask respectively, and has extremely obvious social and economic benefits;

the invention can reduce the secondary recessive contact infection of sanitation workers and the environmental protection pressure in the pole setting visible ground, the best sanitation environment protection is reusable, and the disposable product is reduced;

the invention can reduce the requirement on the aseptic environment of the finished product production in the pole setting visible shadow, has the characteristic of low requirement on the large-scale batch production environment, and can completely avoid equipment and environment investment of enterprises in the aseptic workshop construction process because the finished product can be randomly sprayed and killed by alcohol, thereby reducing the negative and synergistic pole setting visible shadow;

the finished product has low production environment requirement, the yield can meet the requirement of large-scale batch production at any time, and the filtering efficiency grade is long-acting and stable, so the mask has the characteristic of storing strategic epidemic prevention materials, the traditional disposable masks and industrial masks adopt electrostatic electret, the condition of failure reduction due to electrostatic discharge adsorption exists, the single-guide isolation mask completely avoids the condition, and the mask can be used as the strategic materials for storing for a long time.

Drawings

FIG. 1 is a schematic view of a single-layer dual density window structure according to the present invention;

FIG. 2 is a schematic diagram of a single-guide double-layer four-density structure according to the present invention;

fig. 3 is a schematic diagram of a single-conductor three-layer six-density structure according to the present invention.

In the figure: 1. the mask comprises a mask body, 2, an inner layer, 3 and an outer layer.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.

Example (b): referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a possess long-term N90 rank gauze mask that can use repeatedly, includes gauze mask body 1, gauze mask body 1 comprises inlayer 2 and outer 3, and inlayer 2 adopts the anhydrous wire drawing PP false twist of superfine denier to warp more than 75D or below, and outer 3 adopts nylon 160D more than or less than single 6 or two 6 high strength air texturing or adopt wash more than 75D or below with utensil polypropylene fibre false twist texturing yarn throw the crisscross stromatolite of shuttle longitude and latitude and realize the individual layer tissue.

The working principle is as follows: a long-acting reusable N90 level mask and its preparation method, wherein the mask body 1 is composed of an inner layer 2 and an outer layer 3, the invention adopts a special single-guide material, namely a single-direction moisture-guide material, in the form of picking, two layers of special yarns are interlaced and woven to form a single-layer double-density window type structure, the inner layer in the structure adopts PP false-twist textured yarn (superfine denier waterless drawn polypropylene) more than or less than 75D, the outer layer can adopt single 6 or double 6 high-strength air textured yarn more than or less than nylon 160D, or adopt polyester false-twist textured yarn more than or less than 75D to realize single-layer structure with picking warp and weft interlacing and lamination with polypropylene false-twist textured yarn.

The yarn material selection implemented by the technology is that the forms of polypropylene fiber and polyester fiber yarn material are mainly false twist textured yarns, so that on one hand, the tightness of the filament yarns is improved by the false twist textured yarns, and the bulkiness and good elastic effect of the textured yarns are obtained; the fluffy degree is promoted, and the important function is played to the whole filter effect of improving the gauze mask. Secondly, the number of holes of the yarn material of the invention is mostly made of superfine fibers, such as 50D72F, 75D72F and 75D144F, taking the specification of 75D144F yarn material as an example, the number of fibers in one yarn reaches 144 monofilaments, the same thickness of the yarn material is obtained, the more the number of fibers is, the larger the surface area of the fiber filtration is increased, on the premise of not influencing the breathing resistance, the whole protection effect of the mask is improved, the polypropylene fiber used on the back side is used in the same thickness of the denier number because of light specific gravity, and the gram weight of the prepared fabric is lighter; thirdly, the technology of the invention also applies the air textured yarn to the outer layer of the mask for design and use, the ATY air textured yarn is prepared by FDY filament yarn by using special equipment, the air textured yarn uses compressed air to prepare fibers into fluffy yarn with similar effect, the strength of the whole fabric is not influenced, and the specific surface area is also increased. The yarn matching structure is innovatively applied to the mask, does not influence the breathing resistance, does not increase the weight, and obtains better actual filtering and protecting effects.

The woven single-guide fabric formed by the invention has the characteristic of single-layer double density, the outer layer can be subjected to any density adjustment and function adjustment, even the outer layer can be directly subjected to silica array distribution to achieve super oleophobic and super hydrophobic functions, the dust and oil and gas isolation performance is further enhanced, the PP polypropylene fiber structural density of the inner layer has the functions of secondary dust, virus, bacteria and other ultrafine particle hard isolation blocking and natural electrostatic adsorption capacity partially caused by a polypropylene fiber density surface;

the inner layer of the single-layer double-density single-conductive fabric formed by the invention is formed by taking polypropylene false-twist textured yarns as an inner layer with double density of picking interweaving layers, because the polypropylene has the characteristics of high strength and light relative density, the polypropylene has very small hygroscopicity and hardly absorbs moisture, the moisture regain is close to zero under the common atmospheric condition, the inner layer polypropylene not only can be used as an ultrafine hard secondary hard filtering layer and also can be used as an aseptic layer for bacteria, the viruses are subjected to secondary adsorption and hard isolation, under the condition of single-layer double density, the single-layer double-density polypropylene is drawn to form single-layer double-density with outer nylon or terylene or even any natural fiber, the outer layer density is responsible for hard isolation of 10-0.075 micron particles, the inner layer is responsible for secondary hard isolation and is used as a physical property layer, partial re-adsorption is realized by utilizing the characteristic of large natural electrostatic effect, the yarn is not easy to breed bacteria, the antibacterial effect detection is carried out through national standard test, GB/T20944.3-2008 oscillation method, the antibacterial ratio of staphylococcus aureus can reach more than 95%, the antibacterial ratio of escherichia coli and the antibacterial finishing, the antibacterial finishing effect detection is further capable of reaching more than 70%, the anti-virus finishing method can also can be used for improving the anti-virus finishing, the anti-virus finishing and anti-virus finishing process can be used for improving the anti-virus finishing process of the anti-virus finishing fabric, the anti-virus.

The mask product made of the single-layer double-density single-guide fabric formed by the invention can be made into a double-layer four-density and three-layer six-density structure by utilizing each single-layer double density and a multi-layer screen window type principle, under the condition that the inhalation resistance and the exhalation resistance both accord with GB2626-2006 and GB2626-2019 standards and a breather valve is not added, the current double-layer four-density screen window type structure (the outer layer is not made into silicon dioxide and is super oleophobic and water treated) can already make national CNAS laboratory test data with the KN75% (0.075 micron and 75 nanometer) filtering effect reaching 75 percent, and simultaneously can achieve the KP66% (0.185 micron and 185 nanometer) filtering efficiency reaching 66 percent level, and from the fabric principle, the structural principle proves that the screen window type structural principle utilizing the single-layer multi-density fabric can effectively isolate and effectively filter dust, viruses, bacteria and oily micro-particles, and because the material preparation is a physical structure, the density is constant, so the long-acting filtration efficiency is not reduced.

And further experimental verification proves that by adopting a three-layer six-density structure, the inhalation resistance and the exhalation resistance both accord with the national mandatory standards of national respiratory products and the medical recommended standards of GB2626-2006 and GB2626-2019 and YY/T0469-2011, the experimental data detection result proves that the KN-level filtering efficiency reaches more than 90 percent, the KP efficiency reaches more than 80 percent, and the KN-level filtering efficiency completely accords with the national corresponding international qualified standards of respiratory mandatory standards.

YY/T0469-2011 standard experiment data adopts a surface layer material with single-layer double density as a silica array embedded fiber by using a nano technology, so that the penetration of synthetic blood can be effectively prevented, the test standard result is qualified, and the BFE result in the index also meets the standard and is qualified because the inner-layer superfine denier polypropylene fiber is naturally bacteriostatic.

The mask body manufactured by the single-guide fabric screen window type principle has long-acting and constant filtering efficiency due to the physical structure, and has an active pressure difference type intelligent quick-drying working mode due to the natural ultraviolet resistance (single-layer double density) and natural bacteriostasis (inner-layer superfine denier polypropylene layer) of the characteristics of the single-guide fabric, therefore, the machine washing and the hand washing can be carried out at will, and because the single guide material formed by combining the polypropylene fibers, the nylon/polyester fibers and other fibers has certain material inertia, therefore, 75 percent of medical alcohol can be directly adopted to directly carry out microbial spray killing and inactivation on the mask made of the material, and the mask can be worn for a long time, the hot and humid air of the mouth and the nose of the face and the skin-friendly property of the face of the person have quick active discharge and active absorption, and the mouth and the nose contact surfaces can be kept effective for a long time without generating peculiar smell, so that the subjective comfort level is excellent.

The disposable protective mask/medical surgical mask can thoroughly solve the problem that the filtering efficiency is reduced and the filter is directly ineffective after the disposable protective mask/medical surgical mask is worn for 4 hours, has a physical structure, constant density and long-acting and stable filtering effect, can be washed by water and machine and directly sprayed by alcohol, can reduce the epidemic prevention consumption expenditure during a large-scale epidemic situation by standing a pole to see a shadow, saves the social cost, improves the economic benefit, reduces the expenditure burden of enterprises and individuals, calculates the use cost by one year by using a single-guide mask made of single-guide fabric, still saves the use cost by 60-80 percent compared with the existing disposable sterilization-grade surgical mask and the industrial-grade N90-95 mask respectively, and has extremely obvious social and economic benefits;

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a possess long-term N90 level gauze mask that can use repeatedly, includes gauze mask body (1), its characterized in that: gauze mask body (1) comprises inlayer (2) and outer (3), inlayer (2) adopt super fine denier anhydrous wire drawing PP false twist texturing yarn more than 75D or below, outer (3) adopt nylon 160D more than or less than 6 or two 6 high strength air texturing yarns or adopt wash more than 75D or below with utensil polypropylene fibre false twist texturing yarn throw in the crisscross stromatolite of shuttle longitude and latitude and realize the individual layer tissue.

2. A preparation method of a long-acting reusable N90-grade mask is characterized by comprising the following steps: the method comprises the following specific steps: