KR101824493B1 - Mask including hydrophobic polymer nano fiber - Google Patents
Mask including hydrophobic polymer nano fiber Download PDFInfo
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- KR101824493B1 KR101824493B1 KR1020150180063A KR20150180063A KR101824493B1 KR 101824493 B1 KR101824493 B1 KR 101824493B1 KR 1020150180063 A KR1020150180063 A KR 1020150180063A KR 20150180063 A KR20150180063 A KR 20150180063A KR 101824493 B1 KR101824493 B1 KR 101824493B1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
- A62B18/025—Halfmasks
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4358—Polyurethanes
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Pulmonology (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to a mask including nanofibers, and more particularly to a mask including hydrophobic polymer nanofibers between the substrates.
Description
The present invention relates to a mask including nanofibers, and more particularly to a mask including hydrophobic polymer nanofibers between the substrates.
Facial mask is a thing that shields nose and mouth to prevent inhalation and scattering of germs and dusts of sanitary hygiene. Facial masks have been used since the 1919 Spanish cold, when influenza was prevalent. Currently, facial masks are made of cotton, non-woven fabric, paper and the like.
Conventional facial masks prevent the cold air from being directly blown through the nasal cavity or oral cavity, so that it can prevent some of them from being caught in a cold. However, the size of the pores is much larger than that of microbes or bacteria having a size of 0.1 탆 to 1.0 탆 There is a limitation in blocking microbes such as bacteria and fine dusts.
On the other hand, a nanofiber refers to a microfiber having a diameter of only a few tens to a few hundred nanometers, and is produced by an electric field. That is, nanofibers generate electrical repulsive force inside the polymer material by applying a high voltage electric field to the polymer material, which is the raw material, and the nanofibers are manufactured and produced by breaking the molecules into a nano-sized yarn shape.
At this time, as the electric field becomes stronger, the polymer material as the raw material is finely torn, so that a nanofiber having a thinning of 10 to 1000 nm can be obtained.
In the conventional technology for spinning nanofibers, since it is limited to a small-scale working line focused on a laboratory, there is a demand for a technique of spinning nanofibers by dividing a spinning section and using a unit concept. Meanwhile, The spinning solution is electrospun on one side of the supplied substrate to form a nanomembrane to form a nanofiber. That is, the conventional electrospinning device comprises a bottom-up or top-down electrospinning device, and the spinning solution is electrospun on only the bottom surface or the top surface of the substrate supplied into the electrospinning device to form a nanomembrane by laminating the nanomembrane.
As described above, since the electrospinning device comprises the bottom-up electrospinning device or the top-down electrospinning device, the spinning solution is electrospun to the bottom surface or the top surface of the substrate supplied from the outside and transported in a predetermined direction, .
As shown in FIG. 1, the top-down electrospinning device of the bottom-up or top-down electrospinning device includes a spinning solution
In the method of manufacturing a nanomembrane through the electrospinning device 100, the polymer spinning solution filled in the spinning liquid
At this time, in the electrospinning apparatus 100, the
When the nanomembrane prepared by electrospinning the polymer spinning solution through the electrospinning device as described above is applied to a filter material used in an industrial field, the basis weight of the entire nanomembrane used as the filter material must be constant and uniform, It is possible to produce and sell the products satisfactorily. According to the filter used in the gas turbine of the thermal power plant, depending on the direction of the air flow, the position of the air inflow portion, the direction of the air exhaust portion and the position of the exhaust portion, It is necessary that the basis weight of the nanomembrane constituting the filter membrane is not necessarily constant. On the other hand, in the filter section where air filtration is active, the basis weight of the nanomembrane must be controlled to improve the air filtering efficiency, Since the air flow rate is not so large, the basis weight of the nanomembrane is greatly adjusted There is a need for a design that is more durable than the air filtration side.
SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a mask having an excellent blocking ability against fine foreign matter by including hydrophobic polymer nanofibers between the substrates.
The present invention relates to a first substrate; A nanofiber layer formed by electrospinning a hydrophobic polymer solution on the first base material; And a second substrate formed on the nano fiber layer.
Here, the hydrophobic polymer is preferably a low-melting-point polyester or a hydrophobic polyurethane.
At this time, the mask may further include an adhesive layer on the first base material and the nano fiber layer, and the adhesive layer may include a low-melting polyurethane; Low melting point polyesters; Low melting point polyvinylidene fluoride; And at least one adhesive solution selected from the group consisting of an epoxy resin and a curing agent is electrospun.
The curing agent is preferably one selected from the group consisting of an amine curing agent, an acid anhydride curing agent and an imidazole curing agent.
Here, it is preferable that the adhesive solution is electrospun on the entire surface or a part of the first base material and the nano fiber layer.
In addition, it is preferable that the adhesive solution electro-radiated to a portion of the first base material and the nano fiber layer is electrospun in the longitudinal direction or the width direction of the nano fiber layer.
In addition, the hydrophobic polymer solution is electrospun through a temperature controller at a temperature of 50 to 100 ° C.
In addition, the viscosity of the hydrophobic polymer solution through the temperature controller is preferably controlled to 1,000 to 3,000 cps.
Further, the nanofiber layer is characterized in that its basis weight is different along the longitudinal direction or the transverse direction.
The present invention can improve the durability and the productivity of the mask manufacturing by providing the mask containing the hydrophobic polymer nanofibers between the substrates, and the nanofiber layer having fine pores can capture micro-particles such as bacteria and fine dusts, It is possible to provide a mask having an excellent blocking ability against the mask.
1 is a side view schematically showing an electrospinning apparatus according to the present invention,
2 is a side sectional view schematically showing a nozzle of a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
3 is a side cross-sectional view schematically showing another embodiment according to a nozzle of a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
4 is a plan view schematically showing a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
5 is a front sectional view schematically showing a state in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
6 is a sectional view taken along the line A-A 'in Fig. 5,
7 is a front sectional view schematically showing another embodiment in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
8 is a sectional view taken along the line B-B 'in Fig. 7,
Fig. 9 is a front sectional view schematically showing another embodiment of a state in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the present invention, Fig.
10 is a sectional view taken along the line C-C 'in Fig. 9,
11 is a view schematically showing an auxiliary transfer device of an electrospinning device according to the present invention,
12 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary transfer device of the electrospinning apparatus according to the present invention,
FIG. 13 to FIG. 16 are side views schematically showing the operation of the long sheet conveying speed adjusting apparatus of the electrospinning apparatus according to the present invention,
17 is a side view schematically showing an electrospinning apparatus for manufacturing a mask including an adhesive layer according to the present invention,
18 is a perspective view schematically showing a nozzle block installed in an adhesive unit of an electrospinning apparatus according to the present invention,
19 is a plan view schematically showing a nozzle block installed in an adhesive unit of an electrospinning device according to the present invention,
20 to 21 are plan views schematically showing an operation process in which an adhesive and a polymer solution are sequentially injected through a nozzle block installed in each unit of the electrospinning apparatus according to the present invention,
22 is a plan view schematically showing another embodiment according to a nozzle body arranged in a nozzle block of an electrospinning apparatus according to the present invention,
23 is a front view of Fig. 22
24 is a side view schematically showing another embodiment according to the nozzle body arranged in the nozzle block of the electrospinning apparatus according to the present invention,
25 and 26 show an operation process (in FIG. 25, a nozzle indicated by a dashed line is a closed nozzle) in which the polymer spinning solution is electrospun on the same plane of the substrate through the nozzles of each nozzle tube of the electrospinning apparatus according to the present invention , And the nozzle indicated by the broken line in Fig. 26 is located at the lower portion of the substrate)
27 is a plan view schematically showing another embodiment according to a nozzle body arranged in a nozzle block of the electrospinning apparatus according to the present invention,
28 is a perspective view schematically showing another embodiment according to a nozzle body arranged in a nozzle block of the electrospinning apparatus according to the present invention;
FIG. 29 and FIG. 30 are plan views schematically showing another embodiment according to an operation process of electropolishing the polymer spinning solution on the same plane of the base material through the nozzles of each nozzle tube of the electrospinning device according to the present invention. FIG.
31 is a schematic view showing a mask including the hydrophobic polymer nanofibers of the present invention.
Hereinafter, the present invention will be described.
The present invention relates to a first substrate; A nanofiber layer formed by electrospinning a hydrophobic polymer solution on the first base material; And a second substrate formed on the nano fiber layer.
In this case, the mask is manufactured using an electrospinning apparatus.
The hydrophobic polymer is preferably a low-melting-point polyester or a hydrophobic polyurethane, but is not limited thereto.
The low-melting-point polyester is a hydrophobic polymer having a molecular weight of 5,000 to 50,000 and a melting point of 80 to 120 ° C, and it is preferable to use terephthalic acid, isophthalic acid and a mixture thereof. It is also possible to add ethylene glycol as a diol component to further lower the melting point.
On the other hand, the hydrophobic polyurethane used in the present invention has a structure in which a firing group is branched, which is obtained by reacting a polyalkylene oxide with a polyfunctional substance, a diisocyanate and water, and reacting the obtained product with a hydrophobic monofunctional active hydrogen- Lt; RTI ID = 0.0 > isocyanate. ≪ / RTI > The hydrophobic group may be independently selected from the group consisting of alkyl, aryl, arylalkyl, alkenyl, arylalkenyl, cycloaliphatic, perfluoroalkyl, carbocylic, polysycyl and composite resin, The aryl, arylalkyl, arylalkenyl, alicyclic, and polycyclyl hydrophobic groups include from 3 to 40 carbon atoms. The term " alkyl "
Hereinafter, the electrospinning apparatus used in the present invention will be described with reference to Figs. 1 to 17. Fig.
FIG. 1 is a side view schematically showing an electrospinning apparatus according to the present invention, FIG. 2 is a side cross-sectional view schematically showing a nozzle of a nozzle block installed in each unit of the electrospinning apparatus according to the present invention, FIG. 4 is a cross-sectional view schematically showing a nozzle block provided in each unit of the electrospinning apparatus according to the present invention. FIG. 4 is a cross- Fig. 5 is a front sectional view schematically showing a state in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the present invention, Fig. 6 is a sectional view taken on line A-A ' 7 is a schematic view schematically showing another embodiment in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the present invention. 8 is a cross-sectional view taken along the line B-B 'in Fig. 7, and Fig. 9 is a schematic view showing another embodiment of a state in which an electric heater is installed in a nozzle block installed in each unit of the electrospinning apparatus according to the
As shown in the figure, an
For this purpose, each of the
The
Here, the
On the other hand, it is preferable that the
The cellulose base material used in the present invention is preferably composed of 100% cellulose, but cellulose having a total mass ratio of 70 to 90: 10 to 30 mass% of polyethylene terephthalate (PET) It is also possible to use a substrate having a cellulose base coated with a flame retardant coating.
The binary substrate may be selected from a sheath-core type, a side by side type, and a C-type type. In the sheath-core type two-component substrate, the sheath portion is a low-melting-point polyester and the core portion is a high-melting-point polyethylene terephthalate.
At this time, the material of the polymer spinning solution to be radiated through each
The spinning solution supplied through the
2, the
Here, the
An air supply nozzle 404 surrounding the multi-tubular nozzle 500 and the overflow removing nozzles 415 and an air supply nozzle 404 located at the uppermost end of the
Further, an overflow outlet 412 for discharging the overflow liquid to the outside through the overflow removing nozzle 415 is provided.
In the embodiment of the
Here, the
22 to 30, a
A
The
Here, the
At this time, a supply amount adjusting means (not shown) is connected to the
A supply valve 122 is provided in the
That is, when the polymer spinning solution is supplied to the
For this purpose, the supply valve 122 is preferably controllably connected to a control unit (not shown). Preferably, the opening and closing of the supply valve 122 is automatically controlled by the control unit. However, It is also possible that the opening and closing of the supply valve 122 is manually controlled.
112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid
The
The polymer spinning solution supplied to the
That is, the
Here, the
The supply of the polymer solution to be supplied to each
In the embodiment of the present invention, if the amount of the spinning solution of the polymer spinning solution is easily controlled and controlled after being supplied to the
According to the structure described above, the
In an embodiment of the present invention, the
The MD direction used in the present invention means a machine direction, and means a longitudinal direction corresponding to the progress direction in the case of continuous production of fibers such as a film or a nonwoven fabric, and the CD direction means a perpendicular direction to the CD direction as a cross direction . MD is the machine direction / longitudinal direction, and CD is the width direction / transverse direction.
On the other hand, the
Although the overflow device 200 is provided in each
According to the structure as described above, the spinning liquid main tank 8 stores spinning solution to be a raw material of the nanofibers. The spinning liquid main tank 8 is provided therein with an agitating device 211 for preventing separation or coagulation of the spinning solution.
The
The second
The control method as described above is controlled according to the liquid surface height of the spinning liquid measured by the second sensor 222 provided in the intermediate tank 230 to be described later.
The intermediate tank 220 stores the spinning solution supplied from the spinning liquid main tank 8 or the regeneration tank 230 and supplies the spinning solution to the
The second sensor 222 may be a sensor capable of measuring the liquid level height, and is preferably formed of, for example, an optical sensor or an infrared sensor.
A supply pipe 240 and a
The regeneration tank 230 has an agitating device 231 therein for storing the recovered circulating fluid and preventing separation or coagulation of the circulating fluid, and a first sensor 231 for measuring the liquid level of the recovered circulating fluid, (Not shown).
The first sensor 232 may be a sensor capable of measuring the liquid level height, and is preferably formed of, for example, an optical sensor or an infrared sensor.
On the other hand, the spinning liquid overflowed in the
The first transfer pipe 251 is provided with a pipe and a pump connected to the regeneration tank 230 and the spinning liquid is transferred from the spinning liquid recovery path 250 to the regeneration tank 230 by the power of the pump .
At this time, it is preferable that at least one of the regeneration tanks 230 is provided, and when there are two or more, the first sensor 232 and the
When the number of the regeneration tanks 230 is two or more, a plurality of
Meanwhile, the VOC recycling apparatus 300 is provided in the
Here, the condenser 310 is preferably a water-cooled, evaporative or air-cooled condenser, but is not limited thereto.
The vaporized VOC generated in each of the
That is, pipes 311 and 331 for interconnecting the
In an embodiment of the present invention, the VOC is condensed through the condenser 310, and the condensed and liquefied VOC is supplied to the solvent storage device 330. However, the condenser 310 and the solvent storage It is also possible that a distillation apparatus 320 is provided between the apparatuses 330 so as to separate and sort each solvent when more than one solvent is applied.
Here, the distillation apparatus 320 is connected to the condenser 310 to vaporize the VOC in the liquefied state by the high-temperature heat and to cool it again to supply the liquefied VOC to the solvent storage apparatus 330.
In this case, the VOC recycling apparatus 300 includes a condenser 310 for supplying air and cooling water to the vaporized VOC discharged through the
Here, the distillation apparatus 320 is preferably a fractionation apparatus, but it is not limited thereto.
That is, the piping for interconnecting the
Then, the content of the solvent in the spinning liquid overflowed and recovered in the recovery tank 230 is measured. The measurement can be performed by extracting a part of the spinning solution as a sample in the recovery tank 230 and analyzing the sample. Analysis of the spinning solution can be carried out by a known method.
Based on the measurement results, the required amount of the solvent is supplied to the regeneration tank 230 through the pipe 332 in the liquefied state, which is supplied to the solvent storage device 330. That is, the liquefied VOC is supplied to the regeneration tank 230 by a required amount according to the measurement result, and can be reused and recycled as a solvent.
The case 18 constituting each
It is also possible to eliminate the insulating
As described above, the case 18 is formed of a conductor and an insulator, and the upper part of the case 18 is formed of an insulator so that the collector 18 is separately provided for mounting the
It is also possible to optimize the insulation between the
In addition, the leakage current can be stopped within a predetermined range, the current supplied from the
Here, the thickness a of the case 18 formed of an insulator is made to satisfy "a = 8 mm".
Therefore, when 40 kV is applied between the
The distance between the inner surface of the case 18 formed of an insulator and the outer surface of the
Therefore, when 40 kV is applied between the
A
4, the
Here, the flow of the polymer spinning solution in the
The polymer spinning solution supplied to each
A plurality of
In order to control the temperature control of the polymer spinning solution supplied to and introduced into the
In order to adjust the temperature of the plurality of
5 to 6, a
In the embodiment of the present invention, the
In the meantime, instead of maintaining the concentration at a constant level, the present invention uses the polymer solution having a high concentration to be reused after the overflow, and adjusts the viscosity of the polymer solution to be constant by using the
The viscosity refers to the ratio of the skew stress and the skewness rate of solute and solvent in the flowing liquid. In general, it is expressed in terms of the point dryness per cutting area, and the unit is dynscm-2gcm-1s-1 or poise (P). The viscosity decreases in inverse proportion to the temperature rise. If the viscosity of the solution is higher than the viscosity of the solvent, the flow of the liquid is distorted depending on the solute, and the flow rate of the liquid is lowered by the amount.
The viscosity of the solution is measured at various solution concentrations and extrapolated to a concentration of 0, and the relationship between the intrinsic viscosity (?) And the molecular weight M of the substance can be expressed as (?) = KMa. In this case, K, a is an integer depending on the type of solute or solvent and the temperature. Therefore, the viscosity value is affected by the temperature, and the degree of the change depends on the type of fluid. Therefore, when talking about viscosity, the values of temperature and viscosity should be specified.
When fabricating the nanofiber with the
The present invention is characterized by including a
The
In the temperature in the electrospinning region, the temperature of the region where the electrospinning occurs (hereinafter, referred to as the 'radiating region') changes the surface tension of the spinning solution by changing the viscosity of the spinning solution, . ≪ / RTI >
That is, when the temperature of the radiation region is relatively high, the nanofiber having a relatively small fiber diameter is produced when the viscosity of the solution is low, and the nanofiber having relatively large fiber diameter is produced when the viscosity of the solution is relatively high because the temperature is relatively low.
In particular, in the case of the polymer solution, the concentration of the polymer solution re-supplied through the overflow tends to increase. By measuring the concentration of the polymer solution in the intermediate tank 220 and adjusting the temperature using the temperature- The viscosity can be kept constant.
The concentration measuring device for measuring the concentration has a contact type and a non-contact type in direct contact with a solution, and a capillary type concentration measuring device and a disk (DISC) type concentration measuring device can be used as a contact type. A concentration measuring apparatus using a concentration measuring apparatus using infrared or the like can be used.
The heating device of the present invention may be an electric heater, a hot water circulating device, a hot air circulating device, or the like. In addition, devices capable of raising the temperature in the same range as the above devices may be borrowed.
As an example of the heating device, the electro-thermal heater may be used in the form of a hot wire, and coil-shaped hot wires 62a and 62b may be mounted inside the
It is also possible to have the configuration of the linear heat lines 62a and 62b and the U-shaped pipe 63.
The heating device includes a nozzle block 110 through which the polymer solution is radiated, a tank (main storage tank, intermediate tank or regeneration tank) and an overflow system 200 (in particular, a tank And a transfer pipe).
The cooling device of the present invention may be a cooling device including a chilling device, and the means for maintaining a constant viscosity of the polymer solution is usually applicable. The cooling device may be provided in at least one of the nozzle block 110, the tank, and the overflow system 200 in the same manner as the heating device, and is used to maintain a certain viscosity of the polymer solution.
In addition, the
The sensor is installed on the main storage tank 210, the intermediate tank 220, the regeneration tank 230, the nozzle block 110 or the overflow system 200 to measure the concentration of the flushing liquid in real time, The heating device and / or the cooling device is operated so that the viscosity is kept constant in the
The concentration of the polymer solution re-supplied through the overflow system 200 of the present invention is 20 to 40%, which is a high concentration solution compared to the concentration of the polymer solution used in conventional electrospinning of 10 to 18%.
Further, in order to make the viscosity of the polymer solution re-supplied according to the present invention constant, the temperature of the polymer solution according to the concentration of the polymer solution is controlled at 45 to 120 ° C, not at room temperature, To < RTI ID = 0.0 > 100 C. < / RTI >
Meanwhile, the viscosity of the polymer solution of the present invention is preferably 1,000 to 5,000 cps, more preferably 1,000 to 3,000 cps. If the viscosity is 1,000 cps or less, the quality of the nanofibers to be electrospun is poor, and if the viscosity is 3,000 cps or more, the polymer solution can not be easily discharged from the nozzle 42 during the electrospinning, resulting in a slow production rate.
In the present invention, since the viscosity of the polymer solution is constant as the electrospinning progresses, the ease of spinning during electrospinning is excellent, and the concentration of the polymer solution is increased. As a result, the amount of solids in the nanofibers accumulated in the collector increases, There is an increasing effect.
In addition, the amount of the residual solvent of the nanofibers using electrospinning is lower than that of the conventional electrospinning, and thus it is possible to produce nanofibers of excellent quality.
The
11, an auxiliary conveying device (not shown) for adjusting the conveying speed of the
The auxiliary conveying
The
In the embodiment of the present invention, five
Meanwhile, in the embodiment of the present invention, the
At this time, the
The auxiliary conveying
In addition, in the embodiment of the present invention, the
On the other hand, the thickness measuring device 70 is provided in the
When the thickness of the nanofibers discharged from the
When the thickness of the nanofibers discharged from the
Here, the thickness measuring device 9 is disposed so as to face upward and downward with the
Thus, the thickness of the
In other words, the thickness measuring device 70 measures the propagation time of the longitudinal wave and the transverse wave, and the propagation time of the longitudinal wave and the transverse wave at the reference temperature of the
The thickness of the mask of the
The elongated sheet conveying speed regulator 30 includes a buffer zone 31 formed between each
At this time, the support rollers 33 and 33 'are provided in the longitudinal direction of the
The
To this end, a sensing sensor (not shown) for sensing the feeding speed of the
In one embodiment of the present invention, the conveying speed of the
With the above structure, the detection sensor can detect the length of the long sheet (15a) in the unit (10b) in which the conveying speed of the long sheet (15a) in the unit (10a) 15b, it is possible to prevent the
On the other hand, if the conveyance speed of the
By adjusting the feeding speed of the long sheet 15b to be fed into the unit 10b located at the rear end of each of the
On the other hand, the
As described above, the conveying speed of the
When the air permeability of the mask or the mask discharged through the
When the air permeability of the mask discharged through the
As described above, it is possible to manufacture a mask having uniform air permeability by controlling the conveying speed of each
Here, when the air permeability deviation P of the mask is less than the predetermined value, the feed speed V is not changed from the initial value, and when the deviation amount P is equal to or larger than the predetermined value, It is possible to simplify the control of the conveyance speed V by the conveyance speed (V) control device.
It is also possible to control the discharge amount and the voltage of the
The main control device 7 includes a
On the other hand, in the lapping machine 100 located at the rear end of the
On the other hand, the present invention can include an adhesive layer on the nano fiber layer.
Hereinafter, an electrospinning apparatus for producing a mask including an adhesive layer will be described with reference to Figs. 17 to 21. Fig.
FIG. 17 is a side view schematically showing an electrospinning apparatus for manufacturing a mask including an adhesive layer, FIG. 18 is a perspective view schematically showing a nozzle block installed in an adhesive unit of the electrospinning apparatus according to the present invention, and FIG. 19 20 to 21 are views showing a state in which the adhesive agent and the polymeric material are adhered to each other through the nozzle block provided in each unit of the electrospinning device according to the present invention, FIG. 3 is a plan view schematically showing an operation process in which the amount of usage is sequentially sprayed.
As shown in the figure, the
In one embodiment of the present invention, the
In the embodiment of the present invention, four
Each of the
With the structure as described above, the
To this end, each
The nozzle blocks 11a in the
In an embodiment of the present invention, each of the nozzle blocks 11 installed in each of the
Here, the
The adhesive is injected in a specific region and a specific region of the first nanofiber layer in a region and a partial shape in the
In the embodiment of the present invention, the
At this time, the
When the adhesive units 10b and 10d have the same structure as the
As described above, when an adhesive is first sprayed onto a specific region and a portion on the first substrate during electrospinning of the polymeric spinning solution on the first base material, the first base material and the nano- It is possible to prevent the desorption phenomenon occurring in the fibrous layer and minimize the interference of the polymer spinning solution in which the injected adhesive is electrospun by the adhesive sprayed only on the specific region and the portion of the first substrate and thereby improve the performance and quality of the manufactured mask .
A plurality of
Here, the valves are individually provided in the supply pipes of the plurality of
Here, the
The
The main control unit is provided in the
A laminating device 90 for laminating the nanofibers electrospun on the
As described above, the
At this time, the polymer spinning solution radiated through each
The low melting point polyvinylidene fluoride (PVDF) used in the present invention has a melting point of 80 to 160 ° C.
There are a variety of ways to control the melting point of PVDF, generally using a method of manipulating the synthesis of PVDF copolymers and a method of controlling the PVDF weight average molecular weight.
As one of the methods for producing low melting point PVDF, it is desirable to control the content of comonomer to control the synthesis of the copolymer. In the present invention, it is particularly preferable to use a polyvinylidene fluoride (PVDF) -based copolymer having a comonomer content of 5 to 50% by weight as the polyvinylidene fluoride (PVDF) -based polymer. The comonomer may be at least one selected from the group consisting of tetrafluoroethylene (TFE), trifluoroethylene, hexafluoroisobutylene, perfluorobutylethylene, perfluoro (ethylene terephthalate), and the like, in addition to hexafluoropropylene (HFP) or chlorotrifluoroethylene (PPVE), perfluoroethyl vinyl ether (PEVE), perfluoromethyl vinyl ether (PMVE), perfluoro-2,2-dimethyl-1,3-dioxole (PDD), and perfluoro Methylene-4-methyl-1,3-dioxolane (PMD), etc. Among them, hexafluoropropylene (HFP) or chlorotrifluoroethylene (CTFE) , But the present invention is not limited thereto.
In the present invention, the polyvinylidene fluoride (PVDF) polymer having a melting point of 80 to 160 ° C has a weight average molecular weight of 3,000 to 30,000, which is controlled by controlling the weight average molecular weight of the polymer. . If the weight average molecular weight is more than 30,000, the melting point exceeds 160 ° C. If the weight average molecular weight is less than 3,000, the melting point becomes less than 80 ° C.
The low melting point polyester is preferably terephthalic acid, isophthalic acid or a mixture thereof. It is also possible to add ethylene glycol as a diol component to further lower the melting point.
The low-melting polyurethane uses a mixture of a polyurethane having a degree of polymerization of 80-100 ° C and a high-degree of polyurethane having a softening temperature of 140 ° C or higher.
It is needless to say that the low melting point polyvinylidene fluoride, the low melting point polyester and the low melting point polyurethane may be used alone or in combination of two or more.
At this time, the epoxy resin is an intermediate of a thermosetting resin and forms a three-dimensional network structure insoluble / infusible by reaction with a curing agent to exhibit physical properties inherent to epoxy, and the epoxy resin is adhered It has an advantage of being excellent in properties, mechanical strength, heat resistance, chemical resistance, water resistance, electric insulation property, moldability and impregnation property, easy production of a composite material, and realizing various properties according to the selection of a curing agent.
Nonlimiting examples of such epoxy resins include bisphenol A type epoxy resins, bisphenol F type epoxy resins, and bisphenol S type epoxy resins.
The above-mentioned bisphenol A type epoxy resin is represented by the following general formula (1), and the most commonly used epoxy resin is produced by a direct method or indirect method.
[Chemical Formula 1]
The bisphenol F type epoxy resin is represented by the following general formula (2) and is produced by the reaction of bisphenol F with ECH. The bisphenol F type epoxy resin has a lower viscosity than the bisphenol A type epoxy resin and theoretically has a somewhat lower mechanical and physical properties. And the like.
(2)
The bisphenol S type epoxy resin is represented by the following general formula (3), and is generally used for rapidly curing an epoxy adhesive and used as a reactant in a polymer reaction.
(3)
On the other hand, the curing agent is preferably one selected from the group consisting of an amine curing agent, an acid anhydride curing agent and an imidazole curing agent, but is not limited thereto.
Non-limiting examples of the amine-based curing agent include aliphatic polyamines, modified aliphatic polyamines, aromatic amines, tertiary amines, and secondary amines.
Examples of the aliphatic polyamines include diethylene triamine (DETA), triethylene tetramine (TETA), diethylamino propyl amine (DEAPA), Menthane diamine (MDA), N-aminoethyl piperazine Isophorone diamine (IPDA), but is not limited thereto.
Examples of the modified aliphatic polyamines include, but are not limited to, Epoxy Polyamine Adduct, Ethylene or Propylene Oxide, Polyamine adduct, Cyanoethylated Polyamine, and Ketone blocked Polyamine (Ketimine).
Examples of the aromatic amine include, but are not limited to, Meta phenylene Diamine (MPD), 4.4 'Dimethyl aniline (DAM or DDM), Diamino Diphenyl Sulfone (DDS), and Aromatic amine adduct.
Examples of the acid anhydride-based curing agent include polyamide (PA), tetrahydrophthalic anhydride (THPA), methyl tetrahydrophthalic anhydride (MTHPA), hexahydrophthalic anhydride (HHPA), and MNA.
Nonlimiting examples of the imidazole-based curing agent include 2MZ and 2E4MZ.
In addition, the curing agent solution may further include a curing accelerator.
The curing accelerator used in the present invention is not particularly limited as long as it is a curing accelerator generally used for accelerating the curing of the epoxy compound and includes, for example, tertiary amines, tertiary amine salts, imidazoles, Quaternary ammonium salts, quaternary phosphonium salts, organic metal salts, and boron compounds. The curing accelerator may be used alone or in combination of two or more.
Examples of tertiary amines include lauryldimethylamino, N, N-dimethylcyclohexylamine, N, N-dimethylbenzylamine, N, N-dimethylaniline, (N, N- dimethylaminomethyl) (N, N-dimethylaminomethyl) phenol, 1,8-diazabicyclo [5.4.0] undecene-7 (DBU), 1,5-diazabicyclo [4.3.0] 5 (DBN).
Examples of the tertiary amine salt include a carboxylate, a sulfonate, and an inorganic acid salt of the above-mentioned tertiary amine. Examples of the carboxylate include salts of carboxylic acids having 1 to 30 carbon atoms (especially 1 to 10 carbon atoms) such as octylate (particularly fatty acid salts). Examples of the sulfonic acid salt include p-toluenesulfonic acid salt, benzenesulfonic acid salt, methanesulfonic acid salt and ethanesulfonic acid salt. Representative examples of tertiary amine salts include salts of 1,8-diazabicyclo [5.4.0] undecene-7 (DBU) (for example, p-toluenesulfonic acid salt and octylic acid salt).
Examples of the metal-based curing accelerator include organic metal complexes or organic metal salts of metals such as cobalt, copper, zinc, iron, nickel, manganese and tin. Specific examples of the organometallic complexes include organic cobalt complexes such as cobalt (II) acetylacetonate and cobalt (III) acetylacetonate, organic copper complexes such as copper (II) acetylacetonate, zinc An organic iron complex such as an organic zinc complex and iron (III) acetylacetonate, an organic nickel complex such as nickel (II) acetylacetonate, and an organic manganese complex such as manganese (II) acetylacetonate. Examples of the organic metal salt include zinc octylate, tin octylate, zinc naphthenate, cobalt naphthenate, stannous stearate and zinc stearate. As the metal-based curing accelerator, cobalt (II) acetylacetonate, cobalt (III) acetylacetonate, zinc (II) acetylacetonate, zinc naphthenate and iron (III) acetylacetonate are preferable from the viewpoints of curability and solvent solubility And particularly, cobalt (II) acetylacetonate and zinc naphthenate are preferable. The metal-based curing accelerator may be used singly or in combination of two or more.
The addition amount of the metal-based curing accelerator is preferably in the range of from 25 to 500 ppm, more preferably from 40 to 200 ppm, of the metal based on the metal-based curing accelerator when the non-volatile content in the resin composition is 100 mass% . If it is less than 25 ppm, it tends to make it difficult to form a conductor layer having a low roughness with good adhesion to the surface of the insulating layer. When it exceeds 500 ppm, the storage stability and insulating property of the resin composition tend to be lowered.
Examples of the quaternary ammonium salt include tetraethylammonium bromide and tetrabutylammonium bromide.
As the quaternary phosphonium salt, for example, the following formula (1)
(Wherein R1, R2, R3 and R4 are the same or different and each represents a hydrocarbon group of 1 to 16 carbon atoms, and X represents an anion residue of a carboxylic acid or an organic sulfonic acid).
Examples of the hydrocarbon group having 1 to 16 carbon atoms include a linear or branched hydrocarbon group such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, t-butyl, pentyl, A straight chain alkyl group; Straight or branched alkenyl groups such as vinyl, allyl, and crotyl; Aryl groups such as phenyl, toluyl, xylyl, naphthyl, anthryl, phenanthryl groups; And aralkyl groups such as benzyl and phenethyl groups. Of these, a straight or branched alkyl group having 1 to 6 carbon atoms, particularly a butyl group, is preferred.
Examples of the "carboxylic acid" in the "anion residue of a carboxylic acid or an organic sulfonic acid" include aliphatic alcohols having 1 to 20 carbon atoms such as octanoic acid, decanoic acid, lauric acid, myristic acid and palmitic acid Monocarboxylic acids; 1,2,4,5-cyclohexanetetracarboxylic acid, bicyclo [2.2.1] heptane-2,3-dicarboxylic acid, methylbicyclo [2.2.1] heptane-2,3-dicarboxylate Alicyclic carboxylic acids (monocyclic alicyclic mono- or polycarboxylic acids, crosslinked cyclic mono- or polycarboxylic acids), and the like. The alicyclic carboxylic acid may have a substituent such as a linear or branched alkyl group having 1 to 4 carbon atoms such as a methyl group, an alkoxy group having 1 to 4 carbon atoms such as a methoxy group, or a halogen atom such as a chlorine atom It is possible. As the carboxylic acid, an aliphatic monocarboxylic acid having a carbon number of 10 to 18 and an alicyclic polycarboxylic acid having a carbon number of 8 to 18 are preferable.
Examples of the "organic sulfonic acid" in the above "anionic residue of a carboxylic acid or an organic sulfonic acid" include methanesulfonic acid, ethanesulfonic acid, 1-propanesulfonic acid, 2-propanesulfonic acid, 1-butanesulfonic acid, Aliphatic sulfonic acids such as 1-hexanesulfonic acid, 1-octanesulfonic acid, 1-decanesulfonic acid and 1-dodecane sulfonic acid (for example, an aliphatic sulfonic acid having 1 to 16 carbon atoms); Benzene sulfonic acid, 3- (linear or branched octadecyl) benzene sulfonic acid, 4- (straight or branched octyl) benzenesulfonic acid, 3- (linear or branched dodecyl) benzene sulfonic acid, p-toluene sulfonic acid, Benzenesulfonic acid, 4-methoxybenzenesulfonic acid, 4-ethoxybenzenesulfonic acid, 4- (4-methoxybenzenesulfonic acid), 4- Chlorobenzene sulfonic acid, and the like.
Representative examples of quaternary phosphonium salts include tetrabutylphosphonium decanoate, tetrabutylphosphonium laurate, tetrabutylphosphonium myristate, tetrabutylphosphoniumpolate, tetrabutylphosphonium cation and bicyclo [2.2 .1] heptane-2,3-dicarboxylic acid and / or methylbicyclo [2.2.1] heptane-2,3-dicarboxylic acid, a salt of an anion of tetrabutylphosphonium cation with 1,2,4 , Salts of anions of 5-cyclohexanetetracarboxylic acid, salts of anions of tetrabutylphosphonium cation and methanesulfonic acid, salts of anions of tetrabutylphosphonium cation and benzenesulfonic acid, salts of tetrabutylphosphonium cation and p-toluenesulfonic acid Salts of anions of tetrabutylphosphonium cation and 4-chlorobenzenesulfonic acid, salts of anions of tetrabutylphosphonium cation and dodecylbenzenesulfonic acid, and the like.
Examples of the boron compound include boron trifluoride, triphenylborate, and the like.
Examples of the imidazole-based curing accelerator include 2-methylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 1,2-dimethylimidazole, 2-methylimidazole, 1-benzyl-2-methylimidazole, 1-benzyl-2-methylimidazole, 2-methylimidazole, 1-cyanoethyl-2-undecylimidazole, 1-cyanoethyl-2-ethyl-4-methyl Imidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-undecylimidazolium trimellitate, 1-cyanoethyl-2-phenylimidazolium trimellitate, 2,4-diamino-6- [2'-methylimidazolyl- (1 ')] - ethyl-s-triazine, 2,4- (1 ')] - ethyl-s-triazine, 2,4-diamino-6- [2'-ethyl-4'-methylimidazolyl- , 4-diamino-6- [2'-methylimidazolyl- (1 ')] -ethyl-s-triazine isocyanuric acid adduct, Methyl-2-phenyl-4-methyl-5-hydroxymethylimidazole, 2,3-dihydro-1H- Imidazole compounds such as pyrrolo [1,2-a] benzimidazole, 1-dodecyl-2-methyl-3-benzylimidazolium chloride, 2-methylimidazoline, And adducts of a thiol compound with an epoxy resin.
Examples of amine curing accelerators include trialkylamines such as triethylamine and tributylamine; amines such as 4-dimethylaminopyridine, benzyldimethylamine, 2,4,6-tris (dimethylaminomethyl) phenol, 1,8-diazabicyclo (5,4,0) -undecene (hereinafter abbreviated as DBU), and the like.
The polymer spinning solution supplied through the
Here, an overflow device 200 is provided in the
The overflow device 200 is provided in each
The overflow device 200 is provided in a unit 10b in which adhesive is injected among the
The solution main tank 8 provided in the adhesive units 10b and 10d among the
The
The second
The
As described above, the liquid surface height of the adhesive or the polymer solution is measured through the second sensor 222 provided in the intermediate tank 230, which will be described later, under the control of the
The intermediate tank 220 separately stores the adhesive or the polymer solution used for supplying the adhesive solution or polymer solution from the solution tank 8 or the regeneration tank 230, The nozzle block 11a provided in the
Here, the second sensor 222 may be an adhesive such as an optical sensor or an infrared sensor, or a sensor capable of measuring the liquid level of the polymer solution, but is not limited thereto.
A supply pipe 240 and a
The regeneration tank 230 is provided therein with a stirring device 231 for separately storing the adhesive or the polymer solution for use recovered by the overflow and for preventing the separation or coagulation of the adhesive or the polymer solution.
Here, the first sensor 232 may be an adhesive such as an optical sensor or an infrared sensor, or a sensor capable of measuring the liquid level of the polymer solution, but the present invention is not limited thereto.
Meanwhile, the adhesive or polymer solution for overflowing in the
The first transfer pipe 251 includes a pipe (not shown) connected to the regeneration tank 230 and a pump (not shown), and the adhesive and the polymer spinning solution are mixed with the solution To the recovery tank (230) in the recovery path (250).
At this time, it is preferable that the regeneration tank 230 is provided at least more than one, and when the regeneration tank 230 is provided in two or more, the first sensor 232 and the
When the number of the regeneration tanks 230 is two, the number of the
The
Hereinafter, a method of manufacturing a mask including the hydrophobic polymer nanofibers of the present invention using the electrospinning device will be described.
In the present invention, one
First, a hydrophobic polymer solution obtained by dissolving a hydrophobic polymer in an organic solvent is supplied to a spinning liquid main tank 8 connected to a
A mask in which the number of units of the
In the
Hereinafter, the present invention will be described concretely with reference to Examples. However, the following Examples and Experimental Examples are merely illustrative of one form of the present invention, and the scope of the present invention is not limited by the following Examples and Experimental Examples .
Example 1
A spinning solution having a concentration of 15% by weight prepared by dissolving the hydrophobic polyurethane in dimethylacetamide (N, N-dimethylacetamide, DMAc) was introduced into the spinning liquid main tank of the first unit. The first unit of the
While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. Anyone with it will know easily.
1, 100: Electrospinning device 3: Feed roller
5: take-up roller 7: main control device
8: Fluid tank main tank
10a, 10b, 10c, 10d, 110, 110:
11, 11a, 11b, 111:
112, 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i:
13: collector
14, 14a, 14b, 14c, 14d and 114:
15, 15a, 15b, 115: long sheet 16: auxiliary conveying device
16a:
18: Case 19: Insulation member
30: Long sheet conveying speed adjusting device 31: Buffer section
33, 33 ': support roller 35: regulating roller
40:
43: pipe 60: thermostat
70: Thickness measuring device 80: Air permeability measuring device
90: laminating device 200: overflow device
211, 231: stirring
216: second transfer pipe 218: second transfer control device
220: intermediate tank 222: second sensor
230: regeneration tank 232: first sensor
240: Supply piping 242: Supply control valve
250: spinning liquid recovery path 251: first transfer piping
300: VOC recycling device 310: condensing device
311, 321, 331, 332: piping 320: distillation device
330: Solvent storage device 404: Nozzle for supplying air
405: nozzle plate 407: first spinning solution storage plate
408: second spinning solution storage plate 410: overflow solution temporary storage plate
411: air storage plate 412: overflow outlet
413: Air inlet 414: Nozzle support plate for air supply
415: Nozzle for Overflow Removal
416: nozzle overflow removing nozzle support plate 500: multiple tubular nozzle
501: Inner tube 502: Outer tube
503:
116a: conveying belt 116b: conveying roller
120: spinning fluid
120b: Second spinning solution
121:
121b: second supply pipe 121c: third supply pipe
122: supply valve 125: nozzle supply pipe
126: Nozzle valve
Claims (9)
A nanofiber layer formed by electrospinning a hydrophobic polymer solution on the first base material; And
And a second substrate formed on the nano fiber layer,
Wherein the nanofiber layer has a different basis weight along the longitudinal direction or the transverse direction.
Wherein the hydrophobic polymer is a low-melting-point polyester or a hydrophobic polyurethane.
Further comprising an adhesive layer on the first base material and the nano fiber layer,
Wherein the adhesive layer comprises a low melting point polyurethane; Low melting point polyesters; Low melting point polyvinylidene fluoride; And at least one adhesive solution selected from the group consisting of an epoxy resin and a curing agent.
Wherein the curing agent is one selected from the group consisting of an amine-based curing agent, an acid anhydride-based curing agent, and an imidazole-based curing agent.
Wherein the adhesive solution is electrospun on the first substrate and the front or a portion of the nanofiber layer.
Wherein the adhesive agent solution electrospun to a part of the first base material and the nano fiber layer is electrospun in the longitudinal direction or the width direction of the nano fiber layer.
Wherein the hydrophobic polymer solution is electrospun through a temperature controller at a temperature of 50 to 100 ° C.
Wherein the viscosity of the hydrophobic polymer solution is adjusted to 1,000 to 3,000 cps through the temperature controller.
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