KR20170105372A - Manufacturing method of nanofiber fabric for bedclothes - Google Patents

Manufacturing method of nanofiber fabric for bedclothes Download PDF

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Publication number
KR20170105372A
KR20170105372A KR1020160028515A KR20160028515A KR20170105372A KR 20170105372 A KR20170105372 A KR 20170105372A KR 1020160028515 A KR1020160028515 A KR 1020160028515A KR 20160028515 A KR20160028515 A KR 20160028515A KR 20170105372 A KR20170105372 A KR 20170105372A
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South Korea
Prior art keywords
electrospinning
nanofiber
spinning solution
support
polymer spinning
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KR1020160028515A
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Korean (ko)
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KR101811652B1 (en
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박종철
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(주)에프티이앤이
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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
    • D04H1/70—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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0015—Electro-spinning characterised by the initial state of the material
    • D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • 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
    • D04H1/425—Cellulose series
    • 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
    • D04H1/4282—Addition polymers
    • D04H1/4318—Fluorine series
    • 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
    • D04H1/4334—Polyamides
    • 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
    • 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
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/13—Physical properties anti-allergenic or anti-bacterial
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2503/00—Domestic or personal
    • D10B2503/06—Bed linen

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The present invention relates to a method for producing a bedding nanofiber fabric. The present invention relates to a method for manufacturing a nanofiber web, comprising the steps of rotating a support or a substrate on which a nanofiber web is laminated and sequentially arranging two or more top-down and bottom-down electrospinning devices on the same surface, The present invention relates to a bedding-type nano-fiber fabric prepared by laminating a plurality of nano-sized bed-type nanofibers, and the manufacturing process can be simplified and the manufacturing time can be reduced.

Description

Technical Field [0001] The present invention relates to a nanofiber fabric for bedclothes,

The present invention relates to a method for producing a bedding-type nano-fiber fabric, which is a structure in which two or more top-down and bottom-up electrospinning apparatuses are alternately arranged to manufacture nanofibers and a nanofiber web is laminated on one surface of the substrate .

Generally, the size of house dust mite is about 100-300 ㎛, but the excrement and dead body of house dust mites are about 40 ㎛ or less in size and are very small because they are visually distinguished. There is a problem that the possibility of infiltration into the bedding is increased and the laundry is not removed by the washing. In the case of house dust mites, there is a problem of causing diseases such as atopy, rhinitis and asthma by creating a harmful environment inside the house. Mite excreta or carcass debris can cause ailments if it enters a person's respiratory tract or touches the skin. In the case of bedding, especially quilt, it is necessary to manage bedding cleanly because it provides an environment suitable for propagation of bacteria such as ticks.

To this end, efforts have been made to prevent the propagation of bacteria by using nanofibers on bedding. There has been a problem that production speed and production amount according to the bottom-up type are lowered when nanofibers are produced by a conventional bottom-up electrospinning apparatus in producing bedding nanofiber fabrics used in bedding.

In addition, in the case of a technique for spinning conventional 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 zone and using a unit concept.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for manufacturing an electrospinning device, Which is an advantage of a bottom-up electrospinning apparatus, and a mass production method which is an advantage of a top-down electrospinning apparatus, which is advantageous of a bottom-up electrospinning apparatus, And a method for producing the same.

According to a preferred embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: preparing a support; Forming a nanofiber web on the upper surface of the support by electrospinning a polymer spinning solution with a top-down electrospinning device; And a step of sequentially laminating a nanofiber web by electrospinning a polymer spinning solution with a bottom-up electrospinning device on a nanofiber web laminated on the support, wherein the polymer spinning solution is electroless- And a step of laminating a nanofiber web by electrospinning a polymer spinning solution with a bottom-up electrospinning device is alternately formed in two or more stages, Wherein the step of passing the support through the rotating device between the step of forming the fibrous web and the step of forming the fibrous web is rotated by 180 degrees to the lower surface.

According to another preferred embodiment of the present invention, the total basis weight of each nanofiber web is less than 0.1 g / m < 2 > and less than 1.0 g / m < 2 >, the support is a thermoplastic polyurethane base, The polymer spinning solution is the same material and is characterized by being composed of polyurethane or polyvinylidene fluoride.

According to another preferred embodiment of the present invention, each of the polymer spinning solution includes an antibacterial substance, and each of the nanofiber webs has a different basis weight on the same plane in the longitudinal direction or the width direction of the support, Further comprising the step of separating the support on which the nanofibrous web is laminated from the support and separately positioning the laminate on the substrate and laminating the laminate after continuous lamination; .

According to another preferred embodiment of the present invention, the polymeric spinning solution is electrospun through a temperature controller at a temperature of 45 to 120 ° C.

As described above, according to the present invention having the above-described structure, the support on which the nanofiber web is laminated is rotated to continuously manufacture the nanofiber web by the top-down and bottom-up electrospinning apparatus on the same surface, It is possible to simplify the manufacturing process and reduce the manufacturing time.

In addition, since the rotating device for rotating the support is installed between the electrospinning devices, the space utilization of the electrospinning device can be installed in a horizontally or vertically arranged layered structure on the plane, It is easy and at the same time, there is a margin in the installation space. In other words, it is possible to install and operate the electrospinning device in a narrow space and to produce a mass production of the bedding nano fiber fabric.

1 is a side view schematically showing an apparatus for producing nanofibers according to the present invention,
2 is a plan view schematically showing a nozzle block installed in each electrospinning device of the nanofiber manufacturing apparatus of the present invention,
3 is a front sectional view schematically showing a state in which a heating wire for temperature control is installed in a nozzle block installed in each electrospinning device of the nanofiber manufacturing apparatus of the present invention,
4 is a sectional view taken along the line A-A 'in Fig. 3,
5 and 6 are cross-sectional views schematically showing a flip device used as an embodiment of a rotating device of a nanofiber manufacturing apparatus of the present invention,
7 is a plan view showing a state in which the tube body of the nozzle block of the present invention is turned on and off in the CD direction,
FIG. 8 is a plan view showing a process of electrospinning of a nozzle in a nozzle block, as shown in FIG. 7,
FIG. 9 is a plan view showing a process of electrospinning of a nozzle in a nozzle block in the nozzle block according to an embodiment of the present invention,
10 is a side view schematically showing the arrangement of the apparatus for producing nanofibers of the present invention in the vertical direction,
Fig. 11 is a bird's-eye view schematically showing the arrangement of a case where the apparatus for producing nanofibers of the present invention is arranged in a U-shape with respect to the horizontal direction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the scope of the present invention, but is merely an example, and various modifications can be made without departing from the technical spirit of the present invention.

2 is a plan view schematically showing a nozzle block installed in each electrospinning apparatus of the nanofiber manufacturing apparatus of the present invention. FIG. 3 is a cross- FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, and FIGS. 5 and 6 are cross-sectional views taken along line AA 'in FIG. FIG. 7 is a cross-sectional view schematically showing a flip device 20-1, which is an embodiment of a rotating device 20 used in the nanofiber manufacturing apparatus of the present invention. FIG. 7 is a cross- FIG. 8 is a plan view showing a process of the electrospinning of the nozzles in the nozzle block, as shown in FIG. 7, 9 is a plan view showing a working process of the electrospinning process of the nozzles in the nozzle block in the nozzle block according to the present invention, in which the basis weight is different in the MD direction according to the operation, FIG. 10 is a cross- And FIG. 11 is a bird's-eye view schematically showing the arrangement of a case where the apparatus for producing nanofibers of the present invention is arranged in a U-shape with respect to the horizontal direction.

As shown in the figure, the nanofiber manufacturing apparatus 1 according to the present invention includes a top-down electrospinning device 10 and a bottom-up electrospinning device 30, The bottom-up electrospinning device 30 is arranged at a predetermined interval.

The top-down electrospinning device 10 and the bottom-up electrospinning device 30 are arranged to discharge the polymer spinning solution in the spinning solution main tanks 11, 31 in which the polymer spinning solution (not shown) is filled, A nozzle block 13,33 in which a plurality of nozzles 15,35 are arranged and a nozzle block 15,35 positioned in the upper end of the nozzle 15,35 in the case of a bottom-up electrospinning device and the bottom of the nozzle 15,35 in the case of a top- (17, 37) spaced apart from the nozzles (15, 35) in order to accumulate the polymer spinning solution to be injected, and a voltage generating device (14) for generating a voltage in the collectors .

According to the structure as described above, the nanofiber manufacturing apparatus 1 according to the present invention is characterized in that the nanofiber manufacturing apparatus 1 according to the present invention comprises a spinning solution The polymer spinning solution supplied continuously and quantitatively in the plurality of nozzles 15 and 35 to which a high voltage is applied through the metering pump is supplied to the nozzles 15 and 35 through the nozzles 15 and 35, And is then radiated and focused on the collectors 17 and 37 to form a nanofiber web, and the formed nanofiber is embossed or needle punched into a nonwoven fabric.

On the other hand, the nozzle blocks 13 and 33 in which the nozzles 15 and 35 are disposed in the respective electrospinning devices are provided with a temperature control device 60 in each tube 112. That is, in order to adjust the temperature of the polymer spinning solution in the tubular body of the nozzle blocks 13 and 33 provided in the respective electrospinning devices 10 and 30 and supplied with the polymer spinning solution by the plurality of nozzles 15 and 35, A temperature control device is provided. Here, the flow of the polymer spinning solution in the nozzle blocks 13 and 33 is supplied from the spinning liquid main tanks 11 and 31 in which the polymer spinning solution is stored to each tube through a spinning solution flow pipe (not shown). The polymer spinning solution supplied to each tube is radiated and discharged through a plurality of nozzles 15 and 35, and is accumulated on the support 3 in the form of a nanofiber web. At this time, the plurality of nozzles (15, 35), which are spaced apart from each other at a predetermined interval in the longitudinal direction, are mounted on the tubular body in a state of being electrically connected and electrically connected. Here, the temperature controller 60 is provided in the shape of a heat ray 113 on the inner circumference of the tube to control the temperature control of the polymer solution for supplying and flowing into the tubes. 3 to 5, a temperature regulating device 60 composed of a hot wire is formed on the periphery of the inside of the tubular body of the nozzle blocks 13 and 33 in a spiral manner on the inner circumference of the tubular body of the nozzle blocks 13 and 33 Thereby controlling the temperature of the polymer spinning solution supplied and introduced into the tubular body. In the present invention, it is common to spin at room temperature, but it is also possible to spin at a high temperature, preferably 45 to 120 ° C.

In an embodiment of the present invention, a temperature regulating device 60 consisting of a hot line is spirally arranged on the inner circumference of the tubular body of the nozzle blocks 13 and 33. However, the temperature regulating device 60 is formed in a hot line shape, The temperature regulating device (60) is formed in a substantially C-shaped plate-like shape, and the inner surface of the tube body And the temperature of the polymer spinning solution may be adjusted.

Meanwhile, a down-type electrospinning device 10 is disposed at a front end of the nanofiber manufacturing apparatus 1, a bottom-up electrospinning device 30 is disposed at a rear end thereof, a polymer spinning solution is injected from each electrospinning device, A winding roller 9 for winding a support 3 on which nanofibers are laminated is provided at the rear end of the nanofiber manufacturing apparatus 1 Respectively.

In the present invention, two downward-type electrospinning apparatuses 10 and a bottom-up electrospinning apparatus 30 are alternately arranged, but three or more top-down electrospinning apparatuses, a bottom-up electrospinning apparatus, and a bottom- It is possible to arrange it.

The supporting body 3 on which the polymer spinning solution of the top-down electrospinning device 10 and the bottom-up electrospinning device 30 are laminated is preferably made of nonwoven fabric or fabric, but not limited thereto, Or it can be used directly as a fabric.

As the above substrate, it is possible to use cellulose, a synthetic substrate (synthetic substrate), a polyethylene terephthalate substrate, a bicomponent substrate, a thermoplastic polyurethane (TPU) substrate and the like. The two-component base material is most preferably polyethylene terephthalate in which two components having different melting points are combined. The polyethylene terephthalate two-component substrate may be classified into a sheath-core type, a side-by-side type, a C-type, and the like. In the case of the sheath-core type two-component substrate, the sheath portion is a low melting point polyethylene terephthalate, and the core portion is made of general polyethylene terephthalate. Wherein the sheath portion is about 10 to 90 wt%, and the core is about 90 to 10 wt%. The sheath portion acts as a thermal binder to form the outer surface of the binder fiber, has a melting point of about 80 to 150 占 폚, and the core has a melting point of about 160 to 250 占 폚. The CIS type heterogeneous base material used as an embodiment in the present invention includes an amorphous polyester copolymer in which a melting point is not exhibited by a conventional melting point analyzer in the sheath portion and preferably a relatively high melting point component Is a thermally adhesive composite fiber to be used.

The polyester copolymer contained in the sheath portion is a copolyester in which 50 to 70 mol% is a polyethylene terephthalate unit. As the copolymerizable acid component, isophthalic acid is preferably used in an amount of 30 to 50 mol%, but any other conventional dicarboxylic acid may be used.

As a high melting point component used as a core component, a polymer having a melting point of 160 ° C or higher is suitable. Examples of the high melting point component include polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene terephthalate copolymer and polypropylene.

The basis weight of the two -component base is preferably 10 to 50 g / m 2 , and the basis weight of the polyethylene terephthalate base is preferably 50 to 300 g / m 2 .

In the present invention, a thermoplastic polyurethane (TPU) is preferably used as the most preferable example. The TPU substrate is preferably produced in a meltblown manner.

In the present invention, a thermoplastic polyurethane (TPU) is preferably used as the most preferable example. The TPU substrate is preferably produced in a meltblown manner.

First, the polyurethane is a polymer of a urethane bond formed by the reaction of a polyisocyanate and a polyalcohol. Polyurethane is excellent in elasticity, abrasion resistance, and processability, and is widely used in industrial, consumer products, and parts. Since the properties of polyurethane vary depending on the type of polyurethane, selection of a product suitable for the application is important.

The polyurethane is classified into two types, thermoplastic polyurethane and thermosetting polyurethane. The thermoplastic polyurethane has excellent characteristics such as strength, formability, chemical resistance, oil resistance and wear resistance. BACKGROUND ART Flexible nonwoven fabrics made of thermoplastic polyurethane (hereinafter referred to as "TPU") have been used for applications including clothing, sanitary materials and sporting goods materials due to their high elasticity, low residual strain and excellent air permeability

The process for producing the thermoplastic polyurethane is well known. That is, it is prepared by reacting a linear polyol containing a hydroxy end group such as a polyester polyol or a polyether polyol with a diisocyanate compound containing an isocyanate group at both terminals, and optionally, a chain extender, a monoamine compound Terminal stopping agents, and other additives.

Examples of the polyol include various diols comprising a linear homo or copolymer such as a polyester diol, a polyether diol, a polyester amide diol, a polyacryl diol, a polythioester diol, a polythioether diol, a polycarbonate diol, ≪ / RTI > may be used. More specific examples include polyalkylene ether glycols such as polyoxyethylene glycol, polyoxypropylene glycol, polytetramethylene ether glycol, copolymer polyether glycol composed of tetramethylene group and 3-methyl tetra ketylene group.

As the diisocyanate compound serving as a hard segment, an aromatic, aliphatic or alicyclic diisocyanate is used, for example, 4,4'-diphenyl ketadiisocyanate, 1,3- and 1,4-cyclohexylene diisocyanate, 1,6-hexamethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, isophorone diisocyanate, and the like, but are not limited thereto.

Examples of the chain extender include a diamine compound or a diol compound. Examples of the chain extender include a diamine compound such as methylene diamine, ethanol diamine, 1,2-propylene diamine and the like, and a diamine compound such as ethylene glycol, 1,3-propanediol, , Neopentyl glycol, and the like, but are not limited thereto.

Examples of the terminal terminating agent include monoamine compounds such as monoethanolamine, diethanolamine and diisopropylamine.

On the other hand, the number average molecular weight of the thermoplastic polyurethane is preferably 1,000 to 100,000.

In the present invention, such a thermoplastic polyurethane is used as a base material. The nonwoven fabric is produced by preparing a web (a state in which fibers are repeatedly laminated) and entangling the fibers physically and chemically together.

Typical nonwoven fabrication processes involve web formation and web bonding processes. The general process is used only for single-fiber nonwovens, and this process is not necessary because longwoven nonwovens use filaments by spinning. In the case of non-woven fabric, it is put in a compressed bale state, so that the nonwoven fabric must undergo the process of compressed fibers. The formation process of the web is a necessary process for forming the nonwoven fabric. The dry nonwoven fabric forms the web in the air, whereas the wet nonwoven fabric disperses the fibers to obtain the web. Therefore, in the dry nonwoven fabric, the arrangement of the fibers is mostly directional, but the wet nonwoven fabric has a random irregular arrangement of the fibers. However, the development of a random card machine for dry nonwovens also makes it possible to obtain a web having no directionality depending on its application.

As a method of forming the web, a spun bond method using long fibers produced by dissolving radiation from raw pellets, a dry method of forming a web by arranging short fibers in a predetermined direction in a card machine or the like, And a wet method in which the water is homogeneously dispersed and drained to form a web.

Methods for entangling the fibers include a thermal bond method in which a thermally soluble fiber is mixed with a web and a thermal roll is used, a chemical bond method in which a binder is bonded (adhered fat), a barb of a needle A meltblown method capable of forming webs randomly by impacting filaments with high-pressure air at the time of producing fibers, and capable of producing a web having a diameter of 0.5 to 30 microns, etc. .

Among them, the thermoplastic polyurethane base used in the present invention is preferably produced by the meltblown method, the spunbond method and the needle punch method among the above methods. The principle of the meltblown method is a melt spinning method using a thermoplastic resin, in which a high-temperature and high-pressure airflow is introduced into the outlet of the spinning nozzle to stretch and open the fibers, and then the fibers are accumulated on a collecting conveyor. The nonwoven fabric by this method has an advantage of being excellent in flexibility, impermeability and insulation.

On the other hand, the spunbond method is a method in which a raw material is spun and self-bonded by heat to form a nonwoven fabric. It is a technology to form a web by spinning self-adhesive polypropylene or polyethylene terephthalate by heat, and it has an advantage of easy fabric design.

In addition, in the case of the needle punching method, fibers are physically manufactured by combining webs using special needles, and it is possible to diversify the thickness of the product by the number of punching of needles and the density of needles.

The thermoplastic polyurethane nonwoven fabric produced by such a nonwoven fabric manufacturing method is preferably used as the base material used in the present invention. The basis weight of the base material is preferably 10 to 150 g / m < 2 >. If the basis weight is less than 10 g / m < 2 >, the physical properties of the base material are poor. If the basis weight is more than 150 g / m &

The thermoplastic polyurethane nonwoven fabric can be hydrophobic or hydrophilic, can be introduced in color, and can be partially melted in a high-temperature laminating environment due to its thermoplastic characteristics, so that the thermoplastic polyurethane non- There is a possible advantage.

At this time, the top-down electrospinning device 10 and the bottom-up electrospinning device 30 are arranged symmetrically with respect to the collectors 17 and 37 in the upward and downward directions, respectively. That is, the top-down electrospinning device 10 has the collector 17 positioned at the top of the nozzle 15 and the bottom-up electrospinning device 30 has the collector 37 positioned at the bottom of the nozzle 35.

On both sides of the collectors 17 and 37, conveying rollers 7 are provided and the nano-fibers are stacked on the respective collectors 17 and 37 via the conveying rollers 7, (3) is transported in the horizontal direction. That is, the polymer spinning solution injected from the nozzle 15 of the top-down electrospinning device 10 is laminated on the support 3 of the collector 17, (37), and conveying rollers (7) for repeatedly and continuously advancing the above process are provided at both ends of the respective collectors (17, 37).

In the meantime, the present invention is characterized in that a rotating device 20 is provided between the top-down electrospinning device 10 and the bottom-up electrospinning device 30. The rotating device 20 is disposed between the electrospinning devices and rotates the supporting body 3 by 180 degrees so that the upper surface of the support body is rotated to the lower surface and the lower surface is rotated to the upper surface to be.

5 and 6 are cross-sectional views schematically showing a flip device 20-1 used as an embodiment of a rotating device. 5 is a cross-sectional view showing an initial operation of the flip device 20-1, and FIG. 6 is a cross-sectional view showing a process of the flip device 20-1 in the latter stage of operation.

The flip device 20-1 used as an embodiment of the rotating device is formed as a cylindrical body having a hollow inside and is provided at its central portion with both ends of the support 3 inserted in the horizontal both- Left and right guide members 21 and 21 having guide grooves are formed so as to protrude inwardly. The left guide member 21 of the left and right guide members 21 and 21 formed to protrude inwardly from the inner periphery of the flip device 20-1 is formed to extend upward along the inner periphery, So that the right guide member 21 is extended in the downward direction along the inner periphery and then spirally rotated so as to extend upward in the upward direction And is located at the initial position and direction of the left guide member 21. [

The one end and the other end of the support inserted into the guide grooves 22 and 22 of the left and right guide members protruding inwardly from the inner periphery of the flip device 20-1 by the above- The upper and lower surfaces of the support body 3 are reversed by rotating the inner periphery of the flip device 20-1 in a spiral manner so as to face each other while being guided by the right guide members 21 and 21.

In the present invention, the flip device 20-1 is used as the rotating device 20 for rotating the electrospun nanofibrous web 180 degrees between the electrospinning devices. However, the present invention is not limited to this, It is also possible to use an apparatus which rotates by 90 degrees in the advancing direction of the support by a device or a torsion roller.

The polymer spinning solution filled in the spinning solution main tank 11 of the top-down type electric device 10 is sprayed onto the support 3 of the collector 17 through the nozzle 15, The supporting body 3 on which the nanofiber webs are laminated after the polymer spinning solution injected onto the support 3 of the collector 17 is accumulated is formed on the support body 3 of the collector 17 by the rotation device 20, The upper surface of the support 3 on which the web is laminated is rotated 180 degrees to the lower surface. And then transferred onto the collector 37 of the bottom-up electrospinning device 30 through the conveying roller 7 and onto the support 3 on which the nanofibers transferred onto the collector 37 are laminated, The polymer spinning liquid filled in the spinning liquid main tank 31 of the spinning apparatus 30 is electrospun through the nozzle 35, and the above-mentioned process is continuously and repeatedly performed to produce the final product.

The nanofibers produced while passing through the top-down electrospinning apparatus 10, the rotating apparatus 20 and the bottom-up electrospinning apparatus 30 of the nanofiber manufacturing apparatus 1 according to the present invention by the above-described structure are supported by a support 3 is sprayed on the surfaces of the supports 3 on the collectors 17 and 37 through the nozzles 15 and 35 of the top-down electrospinning device 10 and the bottom- The polymeric spinning solution injected from the nozzles 15 and 35 of the top-down electrospinning device 10 and the bottom-up electrospinning device 30, such as the continuous formation of the fibrous webs, is laminated, Nanofiber products are manufactured.

According to an embodiment of the present invention, the voltage of the top-down electrospinning device is higher than the voltage of the bottom-up electrospinning device so that the diameter of the nanofibrous web produced by the top- It is possible to make the nanofibrous web narrower than the diameter of the nanofibrous web produced by the method.

In the meantime, it is possible to fill the spinning liquid main tanks 11 and 31 of the bottom-up electrospinning device 10 and the bottom-up electrospinning device 30 with the same type of polymer spinning solution, The nanofibers produced through the nanofiber manufacturing apparatus 1 can be manufactured in various ways according to their characteristics.

However, the present invention is characterized in that the polymer spinning solution injected from the top-down electrospinning device 10 and the polymer solution injected from the bottom-up electrospinning device 30 are made of the same kind of polymer spinning solution.

Here, the polymer spinning solution is not particularly limited, and examples thereof include polypropylene (PP), polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinylacetate, polymethylmethacrylate, (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, polyvinyl chloride, polyethyleneimine, polyolefin, polylactic acid (PLA), polyvinyl acetate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimide (PEI), polycaprolactone (PCL), polylactic acid glyceric acid (PLGA), silk, cellulose and chitosan. (PP) materials and heat-resistant polymer materials such as polyamide, polyimide, polyamideimide, poly (meta-phenylene isophthalamide), polysulfone, polyether ketone, polyether Aromatic polyesters such as polyethylene terephthalate, polyethylene terephthalate and polyethylene naphthalate, polytetrafluoroethylene, polydiphenoxaphospazene, polybis [2- (2-methoxyethoxy) phosphazene] , A polyurethane copolymer including polyurethane and polyether urethane, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and the like, are preferably used in a commercial manner. More preferably, one or more selected from the group consisting of polyurethane, polyvinylidene fluoride and nylon is preferably used.

The polymer spinning solution is a solution prepared by dissolving a polymer, which is a synthetic resin material capable of electrospinning, in a suitable solvent, and the type of solvent is not limited as long as it can dissolve the polymer. For example, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, isopropyl, n-butyl, isobutyl, sec-butyl, Isobutyl alcohol, isopropyl alcohol, methyl alcohol, ethanol, aliphatic compounds such as hexane, tetrachlorethylene, acetone, and glycol groups such as propylene glycol, diethylene glycol, isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group, m- Ethylene glycol, and halogen compounds such as trichlorethylene, dichloromethane, aromatic compounds toluene, xylene, alicyclic compounds such as cyclohexanone, cyclohexane and esters such as n-butyl acetate, ethyl acetate, aliphatic ether Butyl cellosolve, acetic acid 2-ethoxy ethanol, 2-ethoxy ethanol, amide dimethyl formamide, dimethylacetamide, etc. And, it is possible to use a mixture of a plurality kinds of solvents. The polymer spinning solution preferably contains, but is not limited to, an additive such as a conductivity improver.

In the present invention, it is preferable that an additive such as an antimicrobial agent is contained in the polymer spinning solution. When the polymer spinning solution is electrospun, the antimicrobial agent is spun together to prevent the problem of microbial growth which is a problem of the bedding nano fiber fabric.

Antimicrobial agents can be broadly divided into organic antimicrobial agents and inorganic antimicrobial agents. Organic antimicrobial agents are mainly in liquid form and are added to products that require antimicrobial activity in a short time. Organic antimicrobial agents are temporarily higher in antibacterial activity than inorganic antibacterial agents, but have a very short persistence of antibacterial activity. In addition, there are concerns about generation of resistant bacteria and acute toxicity, resulting in problems in human safety. Due to these problems, the use area of organic antibacterial agents is being reduced.

Inorganic antibacterial agent is a product made by replacing metal ions such as silver, zinc, copper, etc., which are antibacterial effects on minerals such as zeolite, calcium phosphate, zirconium phosphate and silica gel, and is currently used in various fields such as plastic products, paper and textile . Inorganic antimicrobial agents have a lower temporary antimicrobial activity than organic antimicrobial agents, but have high human safety, do not show resistant bacteria, and have a semi-persistent period of antimicrobial use.

These inorganic antimicrobial agents mainly include zeolite, calcium phosphate and zirconium phosphate. Most of them are zeolite inorganic antibacterial agents.

Inorganic antibacterial agents based on calcium phosphate are disadvantageous in that the concentration of substitution metal ions is lower than that of zeolite inorganic antibacterial agents, and the antibacterial activity is lower than that of zeolite agents. Inorganic antibacterial agents of zirconium phosphate also have low antibacterial activity, high unit cost, And has a disadvantage of high hardness.

In contrast, zeolite-based inorganic antimicrobial agents have many advantages such as no discoloration problem, high antibacterial activity and low particle hardness compared with other antimicrobial agents, and are excellent in application method and safety problem since they are the most widely applied antimicrobial agents It is an antibacterial agent.

It is also possible to prepare a bedding nanofiber fabric having antimicrobial properties by adding the antibacterial agent as described above to the polymer spinning solution.

In the present invention, the polymer spinning solution filled in the spinning solution main tank 11 of the top-down electrospinning device 10 and the solution of the polymer spinning solution filled in the spinning solution main tank 31 of the bottom- And the types are the same or different types.

Each of the nozzle blocks 13 and 33 of the present invention includes a tubular body 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i having a plurality of nozzles 15, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i are connected to the spinning liquid main tanks 11, 31 And the polymer spinning solution filled in the spinning solution main tanks 11 and 31 is supplied.

Here, the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i are connected to the spinning liquid main tanks 11, 31 by a supply pipe (not shown) Is branched into a plurality of tubes to connect the tubular bodies 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i and the spinning liquid main tanks 11,

At this time, a supply pipe adjusting means (not shown) is provided in the supply piping which is communicated to the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tanks 11, Wherein the supply amount adjusting means is constituted by a valve.

In this way, valves are respectively provided in the supply liquid piping leading to the tubular bodies 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tanks 11, 31, By the on-off system in which supply of the polymer solution to be supplied to the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tanks 11, Respectively.

That is, when the polymer solution is supplied from the spinning solution main tanks 11 and 31 to the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i through the supply pipe, The nozzle blocks 13 and 33 are opened and closed by the valves provided in the supply pipes for supplying the tubes 11 and 31 and the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i. 112b, 112d, 112f, 112g, 112h, and 112i of the tubular bodies 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tanks 11, 13 by opening and closing of the valves 212, 213, 214, The supply of the polymer spinning solution to be supplied is controlled and controlled.

By using the structure as described above, the waste liquid main tanks 11 and 31 and the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i are provided, Valves are provided for supplying the polymer solution to the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tanks 11, 112d, 112f, 112g, 112h, 112i, 112f, 112g, 112h, 112i of the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i arranged in the nozzle blocks 13, The supply of the polymer spinning solution is only supplied to the tubes 112a, 112c and 112e at specific positions in the tubular body arranged in the nozzle blocks 13 and 33 by closing the specific valve, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i from the spinning liquid main tanks 11, Is regulated and controlled.

That is, each of the nozzles 15 and 35 provided in the supply pipe and the pipes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i is spoken, As shown in FIG.

The radiation amount regulating means is constituted by a valve. In this way, the supply of the polymer spinning solution supplied to the nozzles 15 and 35 from the supply pipe by the opening and closing of the valve is individually controlled by the valve being provided as the radiation amount adjusting means, Preferably, the opening and closing of the valve is automatically controlled by the control unit, but it is also possible that the opening and closing of the valve are manually controlled according to the situation of the field and the operator's request.

In the present invention, if the amount of the spinning solution of the polymer spinning solution is easily controlled and controlled after the spinning amount control means is provided as a valve but is supplied to the nozzles 15 and 35 in the supply pipe, But is not limited thereto.

In the present invention, a valve is provided in the supply piping so that the tubes 112, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i of the nozzle blocks 13, 33 in the spinning liquid main tanks 11, And a valve is provided in the supply pipe to supply a supply amount of the polymer solution for the respective nozzles supplied from the tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i of the tubular body 112a, 112b, 112c, 112d, 112h, 112i by controlling and controlling the radiation amount of the polymer solution, A nano-fiber web having different polymer types or basis weights is laminated in the width direction or the longitudinal direction of the support 3 by an electrospinning polymer spinning solution.

The nanofiber web produced according to the present invention is characterized in that it has a different basis weight in the width direction, that is, in the CD direction or in the transverse direction, or is electrospun and laminated in the longitudinal direction, that is, in the MD direction. The CD direction is the cross direction, which means the direction perpendicular to the MD direction (Machine Direction). The MD direction is the longitudinal direction / longitudinal direction, and the CD direction is the width direction / transverse direction.

Basis Weight or Grammage, on the other hand, is defined as the mass per unit area, that is, the preferred unit, grams per square meter (g / m 2).

In the production of the bedclothes nanofiber fabric of the present invention, the basis weight of the total stacked nanofiber web is preferably 0.1 g / m 2 or more and 20.0 g / m 2 or less, more preferably 0.1 g / m 2 or more and less than 1.0 g / m 2 . Here, when the basis weight of the total nanofiber web is less than 0.1 g / m < 2 > or 1.0 g / m < 2 >, there is a disadvantage in that mechanical properties and antibacterial effect are not large.

7 is a plan view showing a state in which the nozzles 15 and 35 in the electrospinning apparatus according to the present invention are turned on and off in the CD direction and Fig. 8 is a cross- As described above, the operation of the nozzle in the electrospinning device is electrically turned on and off so that the nanofiber web having a different type or basis weight of the polymer spinning solution in the CD direction . 9 is a plan view showing a state in which the nozzles in each electrospinning apparatus of the present invention are turned on and off in the MD direction. As described above, the operation of the nozzles in the electrospinning apparatus is electrically turned on and off, It is possible to form a nanofiber web different in kind or basis weight.

A laminating apparatus 50 for laminating the nanofiber web and the support 3 formed through the top-down electrospinning apparatus 10 and the bottom-up electrospinning apparatus 30 constituting the nanofiber manufacturing apparatus of the present invention, The laminating apparatus 50 is located at the rear end of the apparatus 1 for manufacturing nanofibers according to the present invention and performs post-processing.

The top-down electrospinning apparatus 10 and the bottom-up electrospinning apparatus 30 constituting the nanofiber manufacturing apparatus 1 may be arranged in parallel to one another in the horizontal direction, or may be arranged in a vertical direction Or the respective electrospinning devices are arranged in the U direction in the same layer. The fact that they can be arranged in the vertical direction for each layer or in the U direction in the same layer has the advantage that the productivity can be increased in a limited area.

That is, the rotary device is characterized in that the support rotates 180 degrees or vertically rotates in the U-turn direction by the flip device.

In an embodiment of the present invention, a laminating device 50 is provided at a rear end of the nanofiber manufacturing apparatus 1 and is fabricated through a down-type electrospinning device 10 and a bottom-up electrospinning device 30, (Not shown) for supplying a base material (not shown) to the lower side of the laminating apparatus 50, and a base material (not shown) supplied through the supply roller is provided on the lower side of the laminating apparatus 50. [ The nanofiber web is directly electrified and laminated, and the laminate is laminated in multiple layers through the laminating device 50.

The laminating device 50 is provided with a supply roller for supplying another substrate (not shown) on the upper side of the laminating device 50 to laminate the base material on the support 3 on which the nano- Layer laminate.

Hereinafter, a method of fabricating the bedding nano fiber fabric through the operation of the nanofiber manufacturing apparatus of the present invention will be described.

First, the support 3 is supplied to the top-down electrospinning device 10 through the feed roller 5 provided at the tip of the nanofiber manufacturing apparatus 1 according to the present invention. At this time, it is preferable that the support 3 is made of a nonwoven fabric or a fabric, but it is not limited thereto, and it is possible to use the support 3 as a substrate or a fabric.

On the other hand, the support 3 or the substrate, which is fed through the feed roller 5 to the top-down electrospinning apparatus 10, is located on the bottom surface of the collector 17. At this time, a high voltage of the voltage generator (not shown) is generated on the nozzle 15 and the collector 17, and the polymer spinning solution filled in the spinning liquid main tank 11 on the collector 17 flows into the nozzle block 13 via a nozzle 15.

Here, the spinning liquid to be filled in the spinning liquid main tank 11 is continuously supplied in a constant amount into a plurality of nozzles 15 to which a high voltage is applied through a metering pump (not shown) The spinning solution is radiated and focused on the collector 17 with a high voltage applied thereto through the nozzle 15 and the first nanofiber web is laminated on the lower surface of the support 3.

As described above, the support 3, on which the first nanofiber web is laminated, is moved to the rotating device 20 through the down-type electrospinning device 10.

The support 3 on which the first nanofiber web is laminated on the lower surface is passed through the rotating device 20 and the first nanofiber web 3 located on the lower surface of the support 3, Is reversed in the lower surface direction.

As described above, the support 3, whose upper surface is rotated to the lower surface through the rotary device 20, is then fed to the bottom-up electrospinning device 30 by the conveying roller 7, 30 is positioned on the lower surface of the collector 37. The collector 3 is provided on the lower surface of the collector 37,

The high voltage of the voltage generator is generated in the nozzle 35 and the collector 37 and the polymer spinning solution filled in the spinning liquid main tank 31 on the collector 37 generating the high voltage is supplied to the nozzle block 33 Through the nozzle 35 of the spray nozzle.

Each of the voltage generators has a structure similar to that of a general electrospinning device and generates a high voltage in the collectors 17 and 37 through the nozzles 15 and 35 and a nozzle 15 and 35 and the collector located below or above the nozzle blocks 13 and 33, preferably a voltage of 1 kV or more, more preferably 20 kV or more.

On the other hand, the spinning liquid to be filled in the spinning liquid main tank 31 is continuously and constantly supplied in a plurality of nozzles 35 to which a high voltage is applied through the metering pump, and the spinning solution supplied from the nozzle 35 is supplied to the nozzle On a first nanofiber web which is laminated by downward electrospinning on the lower surface of the support 3 while being radiated and focused on a collector 37 with a high voltage applied by an electrospinning device 35, The web is laminated.

The polymer constituting the first nanofiber web and the second nanofiber web is preferably one selected from the group consisting of polyurethane, polyvinylidene fluoride and nylon. Particularly, when a polyurethane is used as a nanofiber web and a thermoplastic polyurethane base is used as a base material, due to the similarity of materials of the base material and the nanofiber web, separation between the base material and the nanofiber is not easily caused by the laminating process There is an advantage in that the thermoplastic polyurethane base acts as an adhesive layer even if a raw material used for cellulose or bedding is placed on the outer surface of the substrate and laminated together.

At this time, the conveyance of the support 3 to the downward-type electrospinning device 10, the conveyance to the rotary device 20 and the conveyance to the bottom-up electrospinning device 30 are performed by the conveying roller 7.

In the present invention, it is preferable that the top-down electrospinning device 10 and the bottom-up electrospinning device 30 are arranged in a straight line in the horizontal direction, but they may be arranged in a vertical direction in which the respective electrospinning devices are positioned in layers, And the electrospinning device is arranged in the U direction. The fact that they can be arranged in the vertical direction for each layer or in the U direction in the same layer has the advantage that the productivity can be increased in a limited area.

That is, the rotary device is characterized in that the support rotates 180 degrees or vertically rotates in the U-turn direction by the flip device.

As described above, by repeating the process of successively laminating the nanofibers on one surface of the support 3 while the support 3 is being transferred to the top-down electrospinning device 10 and the bottom-up electrospinning device 30, The nanofibrous web is laminated in a plurality of layers.

In the present invention, the spinning liquid main tanks 11 and 31 of the bottom-up electrospinning device 10 and the bottom-up electrospinning device 30 are filled with the same type of polymer spinning solution.

That is, the polymer spinning solution injected from the top-down electrospinning device 10 and the polymer solution injected from the bottom-up electrospinning device 30 are made of the same kind of polymer spinning solution.

As described above, through the nanofiber manufacturing apparatus 1 having the down-type electrospinning apparatus 10 and the bottom-up electrospinning apparatus 30, which are alternately and continuously arranged, the support member 3 Is wound on the take-up roller 7, and the produced nanofiber is embossed or needle-punched to produce a nonwoven fabric.

Here, the support 3 on which the nanofiber web prepared through the down-type electrospinning device 10 and the bottom-up electrospinning device 30 are laminated is subjected to a post-process by laminating the support 3 with the laminating device 50 .

Also, it is possible to further include an air permeability measuring device 70 for measuring an abnormality such as air permeability of the manufactured nanofiber web, and other process devices for other post-processes.

In the case of the bedding nanofiber fabric prepared according to the present invention, it is preferable that the fabric is used by placing and laminating cellulose, cloth, cloth, knitted fabric, nonwoven fabric, scrim fabric and the like. In the case of cellulose, cloth, cloth, knitted fabric, nonwoven fabric, scrim fabric and the like which can be laminated on the fabric, it is preferable that the basis weight is 100 to 400 g / m 2.

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.

[Example 1]

13% by weight of polyurethane (Pellethane 2363-80AE from DOW, USA) was dissolved in 87% by weight of NN-dimethylacetamide (DMAc) to prepare a polymer solution having a concentration of 13% And the same polymer spinning solution was provided in the raw material tank of the bottom-up electrospinning device at the rear end. Thereafter, a first polyurethane nanofiber web was laminated on a TPU substrate (IOH10UM4 manufactured by Bluecher) having a basis weight of 30 g / m < 2 > in a top-down electrospinning device placed at the front end, The laminate is rotated 180 degrees. In the bottom-up electrospinning device located at the rear end, the second polyurethane nanofiber web is electrospun on the first polyurethane nanofiber web to form a bedding nanofiber fabric. At this time, the distance between the nozzle block and the collector was 20 cm and the applied voltage was 15 kV. The basis weight of total nanofiber web was 0.5 g / m2. Thereafter, a cloth fabric having a basis weight of 150 g / m < 2 > was placed on the TPU substrate, and then laminated to produce a bedding nanofiber fabric.

[Example 2]

The polymer spinning solution used for the bottom-up electrospinning device at the front end contains polyurethane to have a concentration of 13%, and the polymer spinning solution used for the top-down electrospinning device at the rear end contains polyvinylidene fluoride The fabric of the bedding nanofiber was prepared in the same manner as in Example 1,

[Example 3]

A bedding nanofiber fabric was prepared in the same manner as in Example 1, except that an inorganic antibacterial agent, which is an antibacterial substance, was included in the polymer spinning solution.

[Example 4]

13% by weight of polyurethane (Pellethane 2363-80AE from DOW, USA) was dissolved in 87% by weight of NN-dimethylacetamide (DMAc) solvent to prepare a polymer spinning solution having a concentration of 13% Is applied to the nozzle block containing the on-off system designed to be connected to the independent main tank, separated into two parts by the nozzle block in the direction of the CD, into the spinning liquid main tanks of the top down electrospinning device and the bottom- 15 kV, and electrospun on a TPU substrate (IOH10UM4, manufactured by Bluecher) having a basis weight of 30 g / m < 2 > On the electrospun collector, the basis weight of the polyurethane nanofiber web is 1 g / m 2 in one direction in the CD direction, and the remaining 1 m in one direction is the polyurethane nanosheet having a CD width of 2 m with a basis weight of 0.5 g / A fibrous web was laminated on the TPU substrate, and a cloth weave having a basis weight of 150 g / m < 2 > was placed on the TPU substrate and laminated to produce a bedding nanofiber fabric.

[Example 5]

A bedding nanofiber fabric was prepared in the same manner as in Example 1, except that the electrospinning environment was changed to a temperature of 75 캜 and spinning at a high temperature.

[Example 6]

13% by weight of polyurethane (Pellethane 2363-80AE from DOW, USA) was dissolved in 87% by weight of NN-dimethylacetamide (DMAc) solvent to prepare a polymer spinning solution having a concentration of 13% , And the same polymer spinning solution was provided in the raw material tank of the bottom-up electrospinning apparatus. Thereafter, the first polyurethane nanofiber web was laminated on a TPU substrate (IOH10UM4 manufactured by Bluecher) having a basis weight of 50 g / m < 2 > in a top-down electrospinning device located at the front end, The laminate is rotated 180 degrees. In the bottom-up electrospinning device positioned at the rear end, the second polyurethane nanofiber web is electrospun on the first polyurethane nanofiber web, and the laminate is rotated 180 degrees through the rotating device. In the top-down electrospinning device located at the rear end, a third polyurethane nanofiber web is electrospun on the second polyurethane nanofiber web to form a bedding nanofiber fabric. At this time, the distance between the nozzle block and the collector was 20 cm and the applied voltage was 15 kV. The basis weight of total nanofiber web was 0.9 g / m2. Thereafter, a cloth fabric having a basis weight of 150 g / m < 2 > was placed on the TPU substrate, and then laminated to produce a bedding nanofiber fabric.

[Comparative Example 1]

After the polyurethane adhesive solution was applied, the bedding fabrics prepared by electrospinning and calendering the nylon 6,6 nanofiber web in a downward direction were used so that a basis weight of the fabric was 150 g / m < 2 > on a basis weight of 0.5 g / .

1) Comparison of production time

The nanofiber webs of Example 1 and Comparative Example 1 were weighed to a basis weight of 0.5 g / m < 2 >, and the time taken for the entire support to wrap around the winding roller was measured and compared.

Example 1 Comparative Example 1 Production time 10 minutes 22 minutes

The bedding-type nanofiber fabric according to the embodiment was found to be free from desorption of nanofibers even though a separate adhesive was not used because the TPU base was used. Also, after 5 times of washing the bedding nanofiber fabric prepared according to Examples 1 to 6, the air permeability efficiencies were all 90% or more, indicating excellent durability. In addition, by using both the bottom-up type and the bottom-up type simultaneously to manufacture the nanofibers, the quality of the nanofiber web, which is an advantage of the bottom-up type, is high and the production efficiency is higher than that of Comparative Example 1 by using the top-down type.

As described above, the method of fabricating the bedding nanofiber fabric according to the present invention is not limited to the configuration and method of the embodiments described above, but the embodiments can be applied to various implementations All or some of the examples may be selectively combined.

1: a nanofiber manufacturing apparatus, 3: a support,
5: feed roller, 7: feed roller,
9: take-up roller, 10: top-down electrospinning device,
11: tank main tank, 13: nozzle block,
14: voltage generating device, 15: nozzle,
17: collector, 20: rotating device,
20-1: Flip device,
21, 21 ': left and right guide members,
22, 22 ': left and right guide grooves,
30: bottom-up electrospinning device, 31: spinning liquid main tank,
33: nozzle block, 35: nozzle
37: collector, 50: laminating device,
60: Temperature control device,
70: air permeability measuring device,
112, 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i:
113: Heat line.

Claims (11)

Preparing a support;
Forming a nanofiber web on the upper surface of the support by electrospinning a polymer spinning solution with a top-down electrospinning device; And
And a step of sequentially laminating a nanofiber web by electrospinning a polymer spinning solution with a bottom-up electrospinning device on the nanofiber web laminated on the support,
The step of electrospinning the polymer spinning solution with the top-down electrospinning device to form a laminate of nanofiber webs and the step of electrospinning a polymer spinning solution with a bottom-up electrospinning device to laminate the nanofiber webs are alternately performed in two or more stages Respectively,
Wherein the step of rotating the upper surface of the supporting body through the rotating device and the lower surface of the supporting body rotates by 180 degrees between the steps of stacking the nanofiber webs by the respective electrospinning apparatuses .
The method according to claim 1,
Wherein each of the nanofiber webs has a different basis weight on the same plane in the longitudinal direction or in the width direction of the support.
The method according to claim 1,
Further comprising the step of separating the support on which the nanofiber webs are laminated from the support and separately positioning and laminating the support on a substrate after the step of forming the nanofiber webs continuously, A method of manufacturing a textile fabric.
The method according to claim 1,
Wherein the total basis weight of the nanofiber web is from 0.1 g / m < 2 > to 20.0 g / m < 2 >.
5. The method of claim 4,
Wherein the total basis weight of the nanofiber web is less than 0.1 g / m < 2 > and less than 1.0 g / m < 2 >.
The method according to claim 1,
Wherein the support is one or more selected from the group consisting of a cellulose base, a synthetic base, a polyethylene terephthalate base, a bicomponent base, and a thermoplastic polyurethane base.
The method according to claim 1,
The first polymer spinning solution and the second polymer spinning solution may be the same or different and may be selected from the group consisting of polypropylene (PP), polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinyl acetate, (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, polyvinyl chloride, polyethyleneimine, polyolefin, polylactic acid (PLA), polyvinyl acetate (PVAc), polyacrylonitrile ), Polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimide (PEI), polycaprolactone (PCL), polylactic acid glyceric acid (PLGA), silk, cellulose and chitosan Wherein the fiber bundle is one or more selected from the group consisting of fibers, fibers, and fibers.
8. The method of claim 7,
Wherein each of the polymer spinning solution is the same material and is one or more selected from the group consisting of polyurethane polyvinylidene fluoride and nylon.
The method according to claim 1,
Wherein each polymer spinning solution comprises an antibacterial substance.
The method according to claim 1,
Wherein each of the polymer spinning solution is electrospun through a temperature controller at a temperature of 45 to 120 ° C.
11. A bedding nanofiber fabric produced according to the method of any one of claims 1 to 10.
KR1020160028515A 2016-03-09 2016-03-09 Manufacturing method of nanofiber fabric for bedclothes KR101811652B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112376118A (en) * 2020-04-13 2021-02-19 广东三水合肥工业大学研究院 Electrostatic spinning equipment

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JP5860604B2 (en) * 2011-03-20 2016-02-16 国立大学法人信州大学 Separator manufacturing equipment
KR101478942B1 (en) * 2014-01-23 2015-01-02 해성엔터프라이즈 주식회사 Method of antibacterial Monofilament and antibacterial Monofilament

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112376118A (en) * 2020-04-13 2021-02-19 广东三水合肥工业大学研究院 Electrostatic spinning equipment
CN112376118B (en) * 2020-04-13 2022-05-10 广东三水合肥工业大学研究院 Electrostatic spinning equipment

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