WO2016171330A1

WO2016171330A1 - Apparatus for manufacturing mask pack comprising nanofibers and method for manufacturing same

Info

Publication number: WO2016171330A1
Application number: PCT/KR2015/007144
Authority: WO
Inventors: 박종철
Original assignee: 박종철
Priority date: 2015-04-24
Filing date: 2015-07-09
Publication date: 2016-10-27

Abstract

The present invention relates to an apparatus for manufacturing a mask pack comprising nanofibers and a method for manufacturing the same. The apparatus comprises: an overflow system for reusing a spinning solution that has not become nanofibers; and a temperature adjustment device for maintaining the viscosity of the spinning solution that is electrospun, instead of maintaining the concentration thereof, such that no diluent is used. In addition, the present invention relates to a method for manufacturing a mask pack comprising nanofibers using electrospinning and, more particularly, to a method for manufacturing a nanofiber filter wherein an upward electrospinning device, which comprises a plurality of nozzle tube bodies inside the upward electrospinning device, is used such that the basis weight of a nanofiber differs in the longitudinal direction (MD) or in the transverse direction (CD), the method being characterized in that a nozzle block is designed to comprise two, three, or nine parts in the longitudinal direction (MD) or in the transverse direction (CD), and the basis weight of a specific part of the same nanofiber can be adjusted differently such that the basis weight of the nanofiber differs in the longitudinal direction (MD) or in the transverse direction (CD).

Description

[Correction 24.07.2015 by Rule 26] 규칙 Manufacturing device and method for manufacturing mask packs containing nanofibers

The present invention relates to a manufacturing apparatus and a method for manufacturing a mask pack including nanofibers, and more particularly, to a mask pack by electrospinning a spinning solution containing a high concentration of a polymer at a temperature higher than room temperature, which is a conventional electrospinning temperature It relates to a manufacturing apparatus and a manufacturing method for producing a.

In addition, an overflow system for reusing non-nanofiber spinning solutions is available.

Compared to maintaining the concentration of the electrospinning spinning solution, by including a temperature control device for maintaining the viscosity of the spinning solution, by using a diluent in the manufacturing apparatus and method for manufacturing a mask pack comprising a nanofiber It is about.

In addition, the nozzle body provided with a plurality of pin-shaped nozzles is arranged in the MD direction or the CD direction on the substrate provided in the unit of the electrospinning apparatus, and each nozzle body and nozzles are controlled to control the MD or CD direction of the substrate. The present invention relates to a manufacturing apparatus and a manufacturing method of a mask pack including nanofibers for controlling the basis weight of the mask pack to be laminated on the substrate by controlling the radiation amount of the electrospinning polymer spinning solution.

A mask pack wraps the skin like a face and supplies moisture and beauty ingredients to the skin.

To clean and beautify skin and restore skin physiology

to be. Such a mask pack is prepared by impregnating a variety of nutrients good for skin care in synthetic fibers such as non-woven fabrics, as disclosed in Patent Publication No. 10-2011-0122473, and exerts a skin care effect by using a certain time attached to the face.

In general, the existing mask pack manufacturing method is a face-shaped nonwoven fabric or equivalent

The backing film is folded with a non-woven fabric and folded by hand, and these are manually inserted into the packaging material, filled with contents, and then commercialized. At this time, the nonwoven fabric used has a disadvantage that the thickness is thick (15-50), the surface area per volume is small, and even a slight facial movement may fall off the facial skin tissue. In addition, there is a problem that the long-lasting effect of the cosmetic liquid after adhesion is also lowered.

In order to solve the above problem, Japanese Patent Application Laid-Open No. 2007-70347 discloses a skin pack mask pack including a nanofiber layer. However, the nanofiber-coated nonwoven mask pack has a possibility that delamination may occur when impregnated with a liquid cosmetic formulation because the adhesion between the nanofiber and the nonwoven fabric is only dependent on the electrostatic force. Is the reality.

In addition, as the electrospinning to form the nanofiber layer was performed at room temperature, the diluent had to be used excessively in order to maintain a constant viscosity of the polymer solution. Too much use of the diluent reduces the concentration of the polymer solution, which decreases the efficiency of electrospinning and causes a problem of environmental pollution.

Recently, a nanofiber layer is used a lot to manufacture a mask pack. The use of the nanofiber layer greatly improves skin adhesion, impregnation efficiency of moisturizing ingredients and various nutrients, and can provide a mask pack with excellent diffusion effect of nutrients through the skin.

The nanofiber layer is formed through electrospinning to contain the skin moisturizing component and nutrients as much as possible. Conventional electrospinning places a certain number of nozzles in a particular direction within the unit for electrospinning and radiates at a constant speed and time to the front of the substrate.

Conventional electrospinning devices are formed by laminating a nanofiber layer on a substrate by electrospinning a specific polymer solution under appropriate conditions due to the configuration of a unit for electrospinning and a nozzle and a nozzle block installed in the unit.

At this time, the nanofibrous layer laminated on the substrate by electrospinning is more effective in filtering foreign matters if the concentration of the polymer solution per unit area, that is, the basis weight, is different depending on the concentration of the pollutants and the degree of generation of the foreign matters. However, in the conventional nanofiber filter, since the polymer solution was uniformly electrospun in forming the nanofiber layer, the polymer solution was inevitably used, and thus the production cost was inevitably increased. In addition, there was an inevitable problem of environmental pollution caused by the use of an excess solvent.

However, there has not been any report on a device for manufacturing a mask pack using a polymer nanofiber layer having a different basis weight in manufacturing a mask pack.

Accordingly, the present invention has been made to solve the above problems, in the electrospinning apparatus including the overflow system, the polymer solution that is not electrospun and falls to the nozzle block is recovered and reused as an electrospinning, as well as a viscosity control system. An object of the present invention is to provide a device capable of manufacturing a mask pack comprising a.

It is another object of the present invention to provide an apparatus for manufacturing a nanofiber filter, wherein the adhesion between the substrate and the nanofiber layer and the nanofiber layer is adhered through an adhesive layer formed by electrospinning a low melting polymer solution.

In addition, the present invention has been made to solve the above problems, in order to increase the wear resistance and productivity when manufacturing the mask pack, the basis weight in the longitudinal direction (MD) or width direction (CD) of the planar direction of the mask pack filter layer It is an object to provide a method for producing different mask packs.

According to a preferred embodiment of the present invention to achieve the above object, in the manufacturing apparatus of the mask pack, the manufacturing apparatus comprises a spinning solution unit and a temperature control device for forming a nanofiber layer, the room The working liquid unit is connected to a tank for storing the solution, a nozzle block through which the solution is discharged, a collector, a power supply, and an overflow system, and the temperature control device constants the viscosity of the spinning solution recovered through the overflow system. It provides a mask pack manufacturing apparatus, characterized in that it comprises a heating device and a cooling device to maintain.

In this case, the manufacturing apparatus further includes a low melting point polymer unit for forming an adhesive layer, the low melting point polymer electrospun from the low melting point polymer unit forms an adhesive layer between the substrate and the nanofiber layer and nanofiber layers The low melting point polymer forming the adhesive layer is characterized in that at least one selected from the group consisting of a low melting point polyester, a low melting point polyurethane, a low melting point polyvinylidene fluoride, the viscosity of the polymer solution is spun 1,000 cps To 3,000 cps is characterized in that it is constantly adjusted, the heating device is characterized in that selected from any one of the heat transfer heater, hot water circulation device and hot air circulation device.

In addition, the cooling device is characterized in that the chilling (Chilling) device.

According to another suitable embodiment of the present invention, in the method for manufacturing a mask pack comprising a substrate and at least one nanofiber layer, the nanofiber layer is a nozzle for connecting a spinning solution having a polymer content of 20 to 40% by weight with a spinning solution unit Feeding the block; Electrospinning the spinning solution supplied to the nozzle block to a collector at a temperature of 50 to 100 ° C; It comprises, and the spinning solution does not include a diluent in the tank, the viscosity of the electrospun polymer solution provides a mask pack manufacturing method characterized in that it is constantly adjusted to 1,000 cps to 3,000 cps.

At this time, the bonding between the substrate and the nanofiber layer and the nanofiber layer is characterized in that the low melting point polymer solution is bonded through the adhesive layer formed on the substrate and the nanofiber layer by electrospinning, the low melting point polymer to form the adhesive layer Is at least one member selected from the group consisting of a low melting point polyester, a low melting point polyurethane, and a low melting point polyvinylidene fluoride.

According to another suitable embodiment of the present invention, in an electrospinning apparatus for manufacturing a mask pack, the electrospinning device comprises a spinning solution unit, and the spinning solution unit comprises a nozzle block, a main tank, a collector, It includes a voltage generator and an auxiliary transfer device, the spinning solution unit provides a mask pack manufacturing apparatus characterized in that the basis weight is differently radiated in the longitudinal or transverse direction.

In this case, the electrospinning device further includes a low melting polymer unit, wherein the low melting polymer unit includes a nozzle block, a main tank, a collector, a voltage generator and an auxiliary feeder, and the low melting polymer unit is low Electrospinning of the low-melting-point polymer solution selected from one or more of melting point polyurethane, low-melting point polyester, low-melting point polyvinylidene fluoride to form an adhesive layer, the electrospinning of the low-melting point polymer solution And it is characterized in that the radiation on a portion or the front surface of the nanofiber layer.

According to a preferred embodiment of the present invention, in the method of manufacturing a mask pack comprising a substrate and a plurality of nanofiber layers, the nanofiber layer is formed by electrospinning a polymer solution in a basis weight or in a transverse direction differently. It provides a manufacturing method of a mask pack.

At this time, the bonding of the substrate, the nanofiber layer and the nanofiber layer is through an adhesive layer formed by electrospinning a low melting polymer solution selected from at least one selected from a low melting point polyester, a low melting point polyvinylidene fluoride, and a low melting point polyurethane. It characterized in that the electrospinning of the low-melting polymer solution is characterized in that the spinning on a portion or the front surface of the base and the nanofiber layer, the polymer for forming the nanofiber layer is selected from hydrophilic polymer, hydrophobic polymer, heat-resistant polymer It is done.

In addition, the hydrophilic polymer is selected from any one of polyacrylonitrile, polyvinyl alcohol, polyamide, hydrophilic polyurethane, the hydrophobic polymer is selected from any one of polyvinylidene fluoride, low melting point polyester, hydrophobic polyurethane The heat resistant polymer is selected from polyamic acid, metaaramid, and polyether sulfone.

The present invention provides a mask pack manufacturing apparatus including a temperature control device, by maintaining a constant concentration of the polymer solution to suppress the use of a diluent and to form an adhesive layer electrospun a low melting polymer solution between the substrate and the nanofiber layer This has the advantage of providing a robust mask pack.

In addition, by providing a method of manufacturing a mask pack having a different basis weight in the longitudinal direction or the width direction, it is possible to improve the durability and productivity of nanofiber production.

1 is a view of the overflow system and the temperature control apparatus according to the present invention,

2 is a side view schematically showing an electrospinning device according to the present invention;

3 is an electrospinning apparatus having a temperature adjusting device according to the present invention, the nose

Front sectional view showing the tubular body equipped with one type of heating wire,

4 is a side cross-sectional view taken along line AA ′ of FIG. 2;

5 is a front sectional view showing a tubular body equipped with a linear heating wire in the electrospinning apparatus having a temperature adjusting device according to the present invention;

6 is a side cross-sectional view taken along line B-B 'of FIG. 4;

7 is a plan view schematically illustrating a connection relationship with other components of a nozzle installed in a spinning solution unit of the present invention;

8 is a layout view of a nozzle block installed in a low melting polymer unit of the present invention;

9 is a plan view showing an electrospinning operation according to the arrangement of the nozzle block as shown in FIG.

10 is a plan view showing a state in which the nozzle in the spinning solution unit of the present invention is turned on and off in the CD direction,

FIG. 11 is a plan view illustrating an operation process in which the basis weight of the polymer is differently electrospun in the CD direction according to the operation of the nozzle in the spinning solution unit as shown in FIG. 10;

FIG. 12 is a plan view illustrating an operation process in which the nozzles in the spinning solution unit of the present invention are electrospun with different basis weights of polymer in the MD direction. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only, and various modifications may be made without departing from the technical gist of the present invention.

1 is a view of the overflow system and the temperature control device according to the present invention. As shown, the electrospinning apparatus 1 for manufacturing the nanofiber layer of the present invention includes a case 102, a nozzle block 110, a collector 150, a power supply device 160 and an auxiliary belt device 170 and a wire. The low melting point polymer unit 100, the spinning solution unit 100 ′, the main storage tank 210, the second transfer pipe 216, the second transfer control device 218 and the regeneration tank 230 therein Consists of an overflow system 200 made of.

The low melting polymer unit 100 is electrospun with a low melting polymer solution for forming an adhesive layer for adhesion between the substrate and the nanofiber layer.

The low melting polymer is selected from low melting polyesters, low melting polyurethanes and low melting polyvinylidene fluorides.

The spinning solution unit 100 ′ electrospins a polymer solution to form a nanofiber layer. The electrospun polymer may be formed as long as it can form a nanofiber layer, for example, polypropylene (PP), polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinylacetate, polymethylmethacryl Latex, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, polyvinyl chloride, polyethyleneimine, polyolefin, polylactic acid (PLA), polyvinyl acetate (PVAc) ), Polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimide (PEI), polycaprolactone (PCL), polylactic acid glycol (PLGA), silk, cellulose, chitosan, etc. Among them, polypropylene (PP) material and polyamide, polyimide, polyamideimide, poly (meth-phenylene isophthalamide), polysulfone, polyether Tone, a polyether imide, polyethylene, aromatic polyester, such as ethylene with polytetrafluoroethylene such as terephthalate, polytrimethylene terephthalate, polyethylene naphthalate can be used.

In addition, the nozzle 42 of the nozzle block 110 can be both a bottom-up, a top-down and a horizontal, and in particular, in the electrospinning apparatus to which the overflow system 200 is applied, upward electrospinning is preferable. A plurality of nozzles 42 are installed in a bottom-up, top-down or horizontal manner, and receives the spinning solution from the main storage tank 210 or the regeneration tank 230.

The tip portion of the electrospinning nozzle 42 is preferably formed by cutting the cylinder along a plane intersecting the cylinder axis at an angle, but the tip portion of the nozzle 42 of the nozzle block 110 has a shape of a fallopian tube. It is also possible to have. The nanofibers produced through the nozzle 42 for discharging the nanofibers from the discharge port toward the collector 150 upward from the discharge port are deposited on the long sheet and move while maintaining a uniform thickness.

The power supply device 160 applies a high voltage between the collector 42 and the nozzles 42 arranged in a plurality of nozzle blocks 110 upwardly. The positive electrode of the power supply device 160 is connected to the collector 150, and the negative electrode of the power supply device 160 is connected to the nozzle block 110 through the case 102.

In general, existing inventions during electrospinning include diluents and concentration controllers to maintain a constant concentration of the polymer solution. However, the present invention is to increase the efficiency of electrospinning by using a high concentration of the polymer solution to be reused after the overflow instead of maintaining a constant concentration, but by constantly adjusting the viscosity of the polymer solution using the temperature control device (60) To provide. To this end, in the electrospinning apparatus of the present invention, a temperature control device is attached.

Hereinafter will be described a temperature control device and a viscosity control method of the polymer solution through the same.

3 is a front sectional view showing a tube body equipped with a coiled heating wire in an electrospinning apparatus having a temperature adjusting device according to the present invention, and FIG. 4 is a sectional view taken along line AA ′ of FIG. 3. In addition, Figure 5 is a front sectional view showing a tubular body equipped with a linear heating wire in the electrospinning device having a temperature control device according to the present invention, Figure 6 is a side cross-sectional view taken along line B-B 'of FIG. to be.

The temperature control device of the present invention includes a heating device and a cooling device, the heating device may be composed of a heat transfer heater, a hot water circulation device or a hot air circulation device, etc. In addition to the temperature can be increased in an equivalent range with the devices Devices can be borrowed.

As an example of the heating device, the electric heating heater may be used in the form of a hot wire, and the

coil wires

62a and 62b may be mounted inside the tubular body 43 of the nozzle block 110, which may be transformed into a jacket.

Such a heating apparatus includes a nozzle block 110 in which the polymer solution is radiated, a tank (main storage tank, an intermediate tank or a regeneration tank) in which the polymer solution is stored, and an overflow system 200, in particular, transferred from the recovery part to the regeneration tank. It may be provided in any one or more of the transfer piping).

As the cooling device of the present invention, a cooling means including a chilling device and the like may be used, and a means for maintaining a constant viscosity of the polymer solution is usually applicable. The cooling device may be provided in any one or more 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 constant viscosity of the polymer solution.

In addition, the temperature control device 60 of the present invention includes a sensor for measuring the concentration and thus a temperature control controller (not shown) for controlling the temperature.

The sensor is installed in the main storage tank 210, the intermediate tank 220, the regeneration tank 230, the nozzle block 110 or the overflow system 200, and the like to measure the concentration of the spinning solution in real time to adjust the temperature Operate the heating and / or cooling device at 60 to keep the viscosity constant.

The concentration of the polymer solution re-supplied through the overflow system 200 of the present invention is 20 to 40%, which is a higher concentration of solution than the concentration of 10 to 18% of the polymer solution used in conventional electrospinning.

In addition, in order to keep the viscosity of the polymer solution resupply of the present invention, the temperature of the polymer solution according to the concentration of the polymer solution is characterized in that it is adjusted to 45 to 120 ℃, not room temperature.

The polymer solution of the present invention preferably has a viscosity of 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 laminated by electrospinning is poor, and if the viscosity is 3,000 cps or more, the discharge of the polymer solution from the nozzle 42 is not easy during electrospinning, and thus the production speed is slowed.

2 is a side view schematically showing an electrospinning device according to the present invention. As shown is a side view schematically showing an electrospinning device according to the present invention.

As shown, the electrospinning apparatus 1 according to the present invention consists of a bottom-up electrospinning apparatus 1, at least one of the low melting point polymer unit 10a and the spinning solution unit 10b are sequentially spaced at regular intervals. The low-melting polymer unit 10a and the spinning solution unit 10b are provided to individually discharge the low-melting polymer or the polymer spinning solution to produce a nanofilter.

The low-melting polymer unit and the spinning solution unit is a low-melting polymer or polymer spinning solution filled therein the main tank 8 and the low-melting polymer or polymer spinning solution filled in the main tank 8 in a quantitative manner A nozzle block 11 for discharging a low melting point polymer or polymer spinning solution filled in the metering pump (not shown) and the main tank 8 for supplying, and having a plurality of nozzles 12 formed in a pin shape; In order to accumulate the polymer spinning solution sprayed from the nozzle 12 includes a collector 13 spaced apart from the nozzle 12 and voltage generators (14a, 14b) for generating a voltage to the collector 13 Consists of the configuration.

By the structure as described above, the electrospinning apparatus 1 according to the present invention includes a plurality of nozzles in which the low melting polymer or polymer spinning solution filled in the main tank 8 is formed in the nozzle block 11 through a metering pump ( 12) a long sheet of continuous low-molecular-weight polymer or polymer spinning solution supplied and discharged onto the collector 13 in which a high voltage is applied through the nozzle 12 and moved on the collector 13 ( 15) A nanofiber nonwoven fabric is formed on the nanofiber nonwoven fabric, which is formed of a filter or a nonwoven fabric.

The low melting polymer solution of the present invention is a low melting polymer solution selected from a low melting polyester, a low melting polyurethane, and a low melting polyvinylidene fluoride in a main tank to form an adhesive layer for bonding between the substrate and the nanofiber layer and the nanofiber layer. Is stored.

In the spinning solution unit of the present invention, a hydrophilic polymer, a hydrophobic polymer, and a heat resistant polymer solution are stored in the main tank.

The hydrophilic polymer is selected from polyacrylonitrile, polyvinyl alcohol, polyamide, hydrophilic polyurethane.

The hydrophobic polymer is selected from polyvinylidene fluoride, low melting polyester, hydrophobic polyurethane.

The heat resistant polymer is preferably selected from polyamic acid, metaaramid, polyethersulfone.

7 is a plan view schematically illustrating a connection relationship with other components of the nozzle installed in the spinning solution unit of the present invention. As shown, the nozzles 12 are arranged in a line along the nozzle tube 40, and the spinning solution can be electrospun from the nozzle 12 over the entire surface of the substrate.

8 is a layout view of a nozzle block installed in the low melting polymer unit of the present invention.

The nozzle disposed on the low melting polymer unit may be applied to the front surface of the substrate, but is preferably applied to a specific portion of the substrate as necessary. In FIG. 8, the nozzles are divided into five groups of nine, and are arranged in two at the top and two at the bottom. However, the arrangement of the nozzle and the nozzle block is not necessarily limited thereto, and a person skilled in the art may design and change the arrangement appropriately in consideration of the number of nozzles and the amount of low melting polymer to be radiated.

FIG. 9 is a plan view illustrating an electrospinning operation process according to the arrangement of the nozzle block as shown in FIG. 8. The

nozzle body

112a, 112b, 112c, and 112d are formed in a rectangular parallelepiped, and a plurality of nozzles are linearly provided on the upper surface thereof. , 112e, 112f, 112g, 112h, 112i are arranged in the nozzle block in the length and width direction of a base material, and each said

nozzle body

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i ) Is connected to the spinning solution main tank (8) to supply the polymer spinning solution filled in the spinning solution main tank (8).

At this time, a supply amount adjusting means (not shown) is provided in the supply pipe 240 delivered from the spinning solution main tank 8 to each

nozzle pipe

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i. Is provided, the supply amount adjusting means is composed of valves (212, 213, 214, 233).

In this way, the

valves

212, 213, 214, 233 are supplied to the supply pipe 240 which is discharged from the spinning solution main tank 8 to the

nozzle pipes

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i. Each of the

valves

212, 213, 214, and 233 is supplied to the

nozzle solution

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i from the spinning solution main tank 8. The supply of polymer spinning solution is controlled by an on-off system which is regulated and controlled.

That is, the spinning solution when the polymer spinning solution is supplied from the spinning solution main tank 8 to each

nozzle tube

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i through the supply pipe 240. Opening / closing

valves

212, 213, 214, and 233 provided in the supply pipe for extending the main tank 8 and the

nozzle pipes

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, and 112i. Of the

nozzle pipes

112b, 112d, 112f, 112g, 112h, 112i at a specific position among the

nozzle pipes

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i arranged in the nozzle block 111 by The

nozzles

112a, 112b, 112c, 112d, 112e, and the like in the spinning solution main tank 8 by opening and closing the

valves

212, 213, 214, and 233. The supply of the polymer spinning solution to 112f, 112g, 112h, 112i) is controlled and controlled.

That is, the nozzles 111a provided in the supply pipe 240 and the

nozzle pipes

112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, and 112i are spoken, but the supply pipe 240 is a nozzle. It is branched to correspond to the number of 111a.

In the present invention, the radiation dose adjusting means is composed of valves (212, 213, 214, 233), if it is easy to control and control the radiation dose of the polymer spinning solution that is radiated after being supplied to the nozzle (111a) from the supply pipe 240 The radiation dose adjusting means may be made of various other structures and means, but is not limited thereto.

The nanofiber layer of the present invention is characterized in that the basis weight in the longitudinal direction or width direction, that is, the MD and CD direction are electrospun differently laminated.

The MD direction used in the present invention means Machine Direction, which means the longitudinal direction corresponding to the advancing direction in the case of continuous production of fibers such as film or nonwoven fabric, and the CD direction means the cross direction perpendicular to the MD direction. . MD may also be referred to as machine direction / longitudinal direction, and CD as width direction / lateral direction.

Basis Weight or Grammage is defined as mass per unit area, ie grams per square meter (g / m 2) as preferred units.

10 is a plan view showing a state in which the nozzle in the spinning solution unit is turned off in the CD direction, Figure 11 is a basis weight of the polymer in the CD direction according to the operation of the nozzle in the spinning solution unit as shown in FIG. 12 is a plan view showing a spinning process, Figure 12 is a plan view showing a working process in which the nozzle in the spinning solution unit of the present invention electrospun differently the basis weight of the polymer in the MD direction, as described above of the nozzle in the spinning solution unit The operation can be electrically ON-OFF controlled to form nanofiber layers with different basis weights in the MD or CD direction.

Hereinafter will be described in more detail through embodiments of the present invention. However, the embodiments are only examples of the present invention, and the scope of the present invention is not limited thereto.

Example 1

A low melting point polyurethane solution having a softening temperature of 80-100 ° C. was dissolved in 15% by weight of a solvent of DMAc (N, N-dimethylaceticamide) to prepare a low melting point polymer solution. It was put in a tank. In addition, polyvinylidene fluoride having a weight average molecular weight of 50,000 and a melting point of 160 ° C. was dissolved in dimethylacetamide (N, N-Dimethylacetamide, DMAc) to prepare a spinning solution having a concentration of 20% by weight and a viscosity of 1000 cps. Into the main tank connected to the unit (100 ').

In the low melting polymer unit 100, the distance between the electrode and the collector was electrospun at 40 cm, an applied voltage of 20 kV, and 70 ° C. to form an adhesive layer having a basis weight of 0.1 g / m ² on the substrate, and then the electrode in the spinning solution unit 100 ′. The distance between the collector and 40 cm, applied voltage 25kV, 70 ℃ was electrospun to form a nanofiber layer having a basis weight of 0.5g / m ² .

After the electrospinning in the spinning solution unit, the concentration of the remaining solution was 25% by weight, the viscosity was changed to 2000cps, and the temperature was increased to 65 ° C. through a temperature control system to perform the electrospinning while maintaining the viscosity at 1000cps to form a nanofiber layer. The mask pack was prepared.

Example 2

A polyurethane solution having a weight average molecular weight of 157,000 was dissolved in dimethylformamide (DMF) to prepare a polyurethane solution. The polyurethane solution was added to each of the spinning solution main tanks, and the nozzle block was separated into two parts in the CD direction. An applied voltage of 20 kV was applied to a nozzle block including an on-off system designed to be connected to the main tank, and electrospun onto a substrate having a basis weight of 3 g / m 2. On the electrospun collector, 1m in one direction of the CD direction is 0.2g / m 2 of polyurethane nanofibers, and 1m in the other direction is 2m of polyurethane nanofibers having a CD width of 0.5g / m 2 of nanofibers. It was formed to laminate a polyurethane nanofiber layer on the substrate to prepare a mask pack. At this time, the distance between the electrode and the collector was 40cm, a bottom-up electrospinning was carried out under the condition of the temperature of 22 ℃.

Example 3

A polyurethane solution was prepared by dissolving a polyurethane having a weight average molecular weight of 157,000 in dimethylformamide (DMF) to prepare a polyurethane solution. The polyurethane solution was poured into each of the spinning solution main tanks, and the nozzle block was separated into two parts in the MD direction. An applied voltage of 20 kV was applied to a nozzle block including an on-off system designed to be connected to the main tank, and electrospun onto a substrate having a basis weight of 3 g / m 2. On the electrospun collector, 1m in one direction of the MD direction is 0.2g / m 2 of polyurethane nanofibers, and 1m in the other direction is 2m of polyurethane nanofibers having MD width of 0.5g / m 2 of nanofibers. It was formed to laminate a polyurethane nanofiber layer on the substrate to prepare a mask pack. At this time, the distance between the electrode and the collector was 40cm, a bottom-up electrospinning was carried out under the condition of the temperature of 22 ℃.

Claims

In the mask pack manufacturing apparatus,

The manufacturing apparatus comprises a spinning solution unit and a temperature control device for forming a nanofiber layer,

The spinning solution unit is connected to a tank for storing a solution, a nozzle block for discharging the solution, a collector, a power supply, and an overflow system,

The temperature control device is a mask pack manufacturing apparatus, characterized in that it comprises a heating device and a cooling device to maintain a constant viscosity of the spinning solution recovered through the overflow system.
The method of claim 1,

The manufacturing apparatus further includes a low melting polymer unit for forming an adhesive layer,

The low melting polymer electrospun from the low melting polymer unit forms an adhesive layer between the substrate, the nanofiber layer, and the nanofiber layers,

The low melting point polymer forming the adhesive layer is a mask pack manufacturing apparatus, characterized in that at least one selected from the group consisting of low melting point polyester, low melting point polyurethane, low melting point polyvinylidene fluoride.
The method of claim 1,

The viscosity of the polymer solution to be emitted is a mask pack manufacturing apparatus, characterized in that it is constantly adjusted to 1,000 cps to 3,000 cps.
The method of claim 1,

The heating device is a mask pack manufacturing apparatus, characterized in that selected from any one of the electric heater, hot water circulation device or hot air circulation device.
The method of claim 1,

The cooling device is a mask pack manufacturing apparatus, characterized in that the chilling (Chilling) device.
In the method of manufacturing a mask pack comprising a substrate and at least one nanofiber layer,

Supplying the spinning solution having a polymer content of 20 to 40% by weight to the nozzle block connected to the spinning solution unit;

Electrospinning the spinning solution supplied to the nozzle block to a collector at a temperature of 50 to 100 ° C; Made, including

The spinning solution does not contain a diluent in the tank,

The viscosity of the electrospun polymer solution is a mask pack manufacturing method, characterized in that it is constantly adjusted to 1,000 cps to 3,000 cps.
The method of claim 6,

Bonding between the substrate and the nanofiber layer and the nanofiber layer is a mask pack manufacturing method characterized in that the low melting point polymer solution is bonded through the adhesive layer formed on the substrate and the nanofiber layer by electrospinning.
The method of claim 7, wherein

The low melting point polymer forming the adhesive layer is a mask pack manufacturing method, characterized in that at least one selected from the group consisting of low melting point polyester, low melting point polyurethane, low melting point polyvinylidene fluoride.
In the electrospinning apparatus for manufacturing a mask pack,

The electrospinning device is configured to include a spinning solution unit,

The spinning solution unit includes a nozzle block, a main tank, a collector, a voltage generator and an auxiliary transport device,

The spinning solution unit is a mask pack manufacturing apparatus, characterized in that the basis weight is radiated differently in the longitudinal or transverse direction.
The method of claim 9,

The electrospinning further comprises a low melting polymer unit,

The low melting polymer unit includes a nozzle block, a main tank, a collector, a voltage generator and an auxiliary transport device,

The low melting point polymer unit is a mask pack manufacturing apparatus, characterized in that to form an adhesive layer by electrospinning at least one low melting point polymer solution selected from low melting point polyurethane, low melting point polyester, low melting point polyvinylidene fluoride .
The method of claim 10,

Electrospinning of the low melting polymer solution is a mask pack manufacturing apparatus, characterized in that the spinning on a portion or the front surface of the substrate and the nanofiber layer.
In the method of manufacturing a mask pack comprising a substrate and a plurality of nanofiber layers,

The nanofiber layer is a method of manufacturing a mask pack, characterized in that the polymer solution is formed by electrospinning different basis weight in the longitudinal or transverse direction.
The method of claim 12,

Combination of the substrate, the nanofiber layer and the nanofiber layer is made through an adhesive layer formed by electrospinning a low melting polymer solution selected from at least one selected from a low melting point polyester, a low melting point polyvinylidene fluoride, and a low melting point polyurethane. ,

Electrospinning of the low melting polymer solution is a method of manufacturing a mask pack, characterized in that the spinning on a portion or the front surface of the nanofiber layer.
The method of claim 12,

The polymer for forming the nanofiber layer is a method of manufacturing a mask pack, characterized in that selected from hydrophilic polymer, hydrophobic polymer, heat resistant polymer.
The method of claim 14,

The hydrophilic polymer is selected from polyacrylonitrile, polyvinyl alcohol, polyamide, hydrophilic polyurethane,

The hydrophobic polymer is selected from polyvinylidene fluoride, low melting polyester, hydrophobic polyurethane,

The heat-resistant polymer is a method of manufacturing a mask pack, characterized in that selected from any one of polyamic acid, meta aramid, polyether sulfone.