KR101876411B1 - An airpermeable and waterproof textile for the uppers of shoes - Google Patents

Abstract

The present invention provides an air permeable and waterproof fabric for a shoe upper comprising a sandwich mesh composed of polyester, a nanofiber membrane, and a herringbone composed of nylon and polyester. The nanofiber membrane used in the fabric for shoe upper according to the present invention is characterized in that a nozzle tube body having a plurality of fin-shaped nozzles arranged in the width direction or longitudinal direction of the collector supplied in the unit of the electrospinning device is arranged, A nanofiber membrane having different basis weights on the same plane in the longitudinal direction of the base material is manufactured by controlling the supply amount of the supplied polymer spinning solution and adjusting the amount of spinning of the polymer spinning solution electrospun through each nozzle, Can be produced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air permeable and waterproof fabric for a shoe upper,

The present invention relates to a fabric for a shoe upper which has air permeability and waterproof property, and a shoe upper which is superior in waterproof property than a conventional product by using a nanofiber membrane as a raw fabric for a shoe upper, It is about the fabric. In addition, the present invention relates to a fabric for a shoe upper which can be manufactured in a customized manner by producing a nanofiber membrane with different weights.

Upper, which is usually used for shoes, is called the upper, which means upper and upper parts of the shoes. It protects the shape and shape of appearance and protects the foot and joints. The basic items that the shoe upper should provide include bearing capacity, protection, ventilation, and lightness. There are many types of upper, such as mesh, leather, artificial leather, etc., and breathability is very important in the upper of the shoe. In addition to the breathability, the needs for shoes with both waterproof and ventilating functions have increased. Therefore, ventilation and waterproof materials have been used and applied to the upper.

It is an object of the present invention to provide a fabric for a shoe upper comprising a nanofiber membrane manufactured by electrospinning and having air permeability and waterproofness.

According to a preferred embodiment of the present invention, a sandwich mesh composed of polyester; A nanofiber membrane on the sandwich mesh; And a herringbone composed of nylon and polyester on the nanofiber membrane. The present invention also provides an air permeable and waterproof fabric for a shoe upper. Wherein the nanofiber membrane is fabricated by electrospinning the polymeric spinning solution in a transverse or longitudinal direction with different basis weights. The sandwich mesh has a basis weight of 400 to 450 g / m 2, the herringbone has a basis weight of 130 to 150 g / m 2, and the herringbone has a mixing ratio of nylon and polyester of 30:70 to 40:60.

According to another preferred embodiment of the present invention, the nanofiber membrane is one or more selected from the group consisting of polyurethane, polyvinylidene fluoride and polyethylene terephthalate, and the basis weight of the nanofiber membrane is 3 to 15 g / m 2 , An air permeability of 0.1 to 2 cm < 3 > / cm < 2 > / sec and a moisture permeability of 20,000 or less, wherein the adhesive is applied and laminated on one side or both sides of the nanofiber membrane. Air permeable and waterproof shoe upper fabric.

The nanofiber membrane used in the fabric for the shoe upper of the present invention has the effect of providing air permeability and waterproof property by laminating nanofibers by electrospinning.

The nanofiber membrane used in the fabric for the shoe upper according to the present invention is characterized in that a nozzle tube body having a plurality of fin-shaped nozzles arranged in the width direction or longitudinal direction of the collector supplied in the unit of the electrospinning device is arranged, By controlling the amount of the polymer spinning solution supplied to the tubular body and adjusting the spinning amount of the polymer spinning solution electrospun through each nozzle, nanofiber membranes having different basis weights on the same plane in the longitudinal direction of the substrate are manufactured, It is possible to manufacture.

1 is a side view schematically showing an electrospinning apparatus for manufacturing a nanofiber membrane of a fabric for a shoe upper according to the present invention,
FIG. 2 is a plan view schematically showing the connection relationship with other components of the nozzle provided in the spinning solution unit of the present invention,
3 is a layout diagram of a nozzle block installed in the unit of the present invention,
FIG. 4 is a plan view showing a process of electrospinning work according to the arrangement of the nozzle blocks as shown in FIG. 3;
5 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. 6 is a plan view showing a work process in which the basis weight of the polymer is electrospun in the CD direction according to the operation of the nozzle in the spinning solution unit shown in FIG. 5,
7 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 MD direction.

Hereinafter, the present invention will be described in detail.

The air permeable and waterproof fabric for a shoe upper of the present invention comprises a sandwich mesh composed of polyester, a nanofiber membrane, and a herringbone composed of nylon and polyester.

First, in the case of fabrics close to the jacket from the upper fabric used in the present invention, a sandwich mesh composed of polyester is used. The sandwich mesh is made of a mesh material, so it has an excellent ventilation and an excellent comfort.

In the case of the sandwich mesh used in the present invention, it is preferable that it is composed of 100% of polyester, and the basis weight is preferably 400 to 450 g / m 2. When the basis weight is less than 400 g / m 2, or when the basis weight is more than 500 g / m 2, the mechanical properties are poor or too stiff because of the use of the shoe upper.

Beneath the sandwich mesh is a nanofiber membrane fabricated by electrospinning, and below the nanofiber membrane is a herringbone lining. Herringbone means a fabric with a tissue effect resembling the bone of a herring, and means a twine with a pattern of fish bone or a pattern of arrows. The herringbone used in the present invention is characterized in that each yarn composed of nylon and polyester is mixed, and the mixing ratio of nylon and polyester yarn is 30:70 to 40:60. In the case where the mixing ratio is not 30:70 to 40:60, the proportion of nylon is increased, which leads to a problem of deteriorating physical properties of the lining support. The herringbone used in the present invention has a basis weight of 130 to 150 g / m < 2 >. When the weight of the herringbone is less than 130 g / m 2 or exceeds 150 g / m 2, Lt; / RTI > It is also possible to use a bristle treated herringbone, and it is also preferable to use a waterproofed one

Meanwhile, the nanofiber membrane used in the present invention is characterized by being formed by electrospinning.

Hereinafter, the electrospinning apparatus for producing the nanofiber membrane of the present invention will be described first.

1 is a side view schematically showing an electrospinning device for producing a nanofiber membrane of the present invention. And is a side view schematically showing the electrospinning device as shown. As shown in the figure, the electrospinning apparatus 1 according to the present invention comprises a bottom-up electrospinning apparatus 1, and at least one front end unit 10a and a rear end unit 10b are sequentially spaced apart from each other And the front end unit 10a and the rear end unit 10b can produce nanofiber membranes by individually spinning the polymer spinning solution.

The front end unit and the rear end unit include a main tank 8 in which a polymer solution is filled, a metering pump 8 for supplying a low melting point polymer or polymer solution used in a predetermined amount into the main tank 8, (Not shown) and a polymer spraying liquid filled in the main tank 8, the nozzle block 11 having a plurality of nozzles 12 arranged in a pin shape, And a voltage generator 14a and 14b for generating a voltage to the collector 13 and a collector 13 spaced apart from the nozzle 12 by a predetermined distance in order to integrate the spinning solution.

The electrospinning device 1 according to the present invention has a structure in which the polymeric spinning liquid filled in the main tank 8 is continuously fed into the plurality of nozzles 12 formed in the nozzle block 11 through the metering pump And the supplied polymer spinning liquid is radiated and focused on the collector 13 with a high voltage applied thereto through the nozzle 12 and is discharged onto the long sheet 15 moved on the collector 13 as a nanofiber membrane .

Here, the long sheet 15 can be used in place of the base material, the support, etc. used in the present invention.

The nanofiber membrane of the present invention is a fiber having an average diameter of 50 to 1000 nm manufactured by spinning a synthetic resin material capable of being electrospun and the synthetic resin material capable of electrospinning is not limited to a specific material. For example, polypropylene (PP) , Polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinyl acetate, polymethylmethacrylate, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT) (PVA), polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimine (PVA), polyvinyl butyral, polyvinyl chloride, polyethyleneimine, polyolefin, (PE), polycaprolactone (PCL), polylactic acid glyceric acid (PLGA), silk, cellulose and chitosan. Among them, polypropylene (PP) Aromatic polyesters such as polyacrylates, polyamides, polyamides, polyimides, polyimide, poly (meta-phenylene isophthalamide), polysulfone, polyether ketone, polyetherimide, polyethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate , Polyphosphazenes such as polytetrafluoroethylene, polydiphenoxaphospazene and polybis [2- (2-methoxyethoxy) phosphazene], polyurethane copolymers including polyurethane and polyether urethane , Cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate and the like are widely used commercially.

More preferably, it is one or more selected from the group consisting of polyurethane, polyvinylidene fluoride and polyethylene terephthalate.

First, polyurethanes are collectively referred to as polymer compounds bonded by an urethane bond formed by the combination of an alcohol group and an isocyanate group. Typically, there are spandex made of synthetic fibers, and urethane-based synthetic rubber is widely used. In other words, the polyurethane is collectively referred to as a polymer compound having a urethane bond (-NHCOO-) group during the repeating of the main chain. Such a polyurethane exhibits properties intermediate between polyamide and polyester, and hygroscopicity is smaller than that of polyamide and exhibits 1 to 1.5% at relative humidity of 65%. It has the advantages of abrasion resistance, chemical resistance, solvent resistance, aging resistance and oxygen stability.

On the other hand, polyvinylidene fluoride (PVDF) (hereinafter referred to as PVDF) is one of the fluorine-based polymers, and the fluororesin contains fluorine, which is excellent in thermal and chemical properties.

Reaction 1. Manufacture of PVDF

PVDF is prepared by the same process as in the above reaction formula 1, and has a melting point (177) and a density (1.78) lower than those of other fluororesin, and is cheap in chemical cost and low in unit cost. It is also used as an advanced paint for exterior walls.

In addition, PVDF is a representative organic material exhibiting piezoelectricity, and many studies have been conducted since the 1960s. In PVDF polymer, four kinds of crystals are mixed, and it can be divided into at least four types of α, β, γ and δ type depending on crystal form. Among them, β-type crystals of PVDF are filled with trans-type molecular chains in parallel, and all of the permanent dipoles of the monomers are aligned in one direction and exhibit large spontaneous polarization. This means that PVDF molecules are arranged regularly through stretching to impart piezoelectricity by giving anisotropy to the aggregated state. In order to improve such piezoelectric properties, various methods for increasing the? -Form crystal in the PVDF fiber have been studied.

Polyethylene terephthalate is also called PET (polyethylene terephthalate), which is a saturated polyester obtained by condensing terephthalic acid with ethylene glycol. Poly (ethylene terephthalate) is obtained by heating dimethyl and terephthalic acid at 150 to 230 ° C for ester exchange reaction to obtain bis (beta -hydroxyethyl) terephthalate. When bis (? -Hydroxyethyl) terephthalate is heated to 270 to 300 占 폚 at 1 torr or lower, polycondensation is carried out, and ethylene glycol is emitted to obtain PET. Another method of obtaining Bis (beta -hydroxyethyl) terephthalate is to react at about 230 [deg.] C while applying pressure to high purity terephthalic acid and ethylene glycol. Such polyethylene terephthalate is excellent in heat resistance, rigidity and electrical properties, and has an advantage that the extreme strength is slightly reduced even at a high temperature for a long time.

On the other hand, the spinning solution is prepared by dissolving the polymer in a solvent, and the type of the solvent is not limited as long as it can dissolve the polymer, and examples thereof include phenol, formic acid, sulfuric acid, m-cresol, Methyl isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group, m-butyl alcohol, isobutyl alcohol, isobutyl alcohol, isobutyl alcohol, isopropyl alcohol, Hexane, tetrachlorethylene, acetone, propylene glycol, diethylene glycol, ethylene glycol as a glycol group, trichlorethylene as a group of halogen compounds, dichloromethane, aromatic compounds such as methylene chloride, Toluene, xylene, aliphatic cyclic compound groups such as cyclohexanone, cyclohexane and ester groups such as n-butyl acetate, ethyl acetate, Group ether group in salbeu, ethyl 2-butyl-cell-ethoxyethanol, may be used. Ethoxyethanol, dimethylformamide to, dimethylacetamide or the like 2 can be used a mixture of a plurality kinds of solvents. The spinning solution preferably contains an additive such as a conductivity improver.

2 is a plan view schematically showing a connection relationship with other components of the nozzle provided in the spinning solution unit of the present invention. As shown in the drawing, 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.

3 is a layout diagram of a nozzle block installed in the low melting point polymer unit of the present invention. The nozzle arranged in the low melting point polymer unit may be applied to the front face portion of the substrate, but is preferably applied to a specific portion of the substrate if necessary. In Fig. 3, the nozzles are divided into five groups of nine nozzles, one at the center and two at the bottom in the upper part. However, the arrangement of the nozzle and the nozzle block is not limited thereto, and it is obvious that those skilled in the art can appropriately design, change and arrange the nozzle in consideration of the number of the nozzles and the amount of the low melting point polymer to be radiated.

FIG. 4 is a plan view showing the electrospinning process according to the arrangement of the nozzle blocks shown in FIG. 3. The nozzle tubes 112a, 112b, 112c, and 112d are formed in a rectangular parallelepiped shape and have a plurality of nozzles linearly arranged on the top surface thereof. 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i, 112f, 112g, 112h, 112i are arranged in the nozzle block in the length and width direction of the substrate, Is connected to the spinning liquid main tank 8 and supplied with the polymer spinning solution filled in the spinning liquid main tank 8.

The nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i are connected to the spinning liquid main tank 8 through a supply pipe 240, A plurality of nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i and a spinning liquid main tank 8 are branched.

At this time, the supply piping 240, which is communicated to the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i in the spinning liquid main tank 8, And the supply amount adjusting means comprises valves 212, 213, 214, and 233.

The valves 212, 213, 214 and 233 are connected to the supply pipe 240 which is communicated to the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h and 112i in the spinning liquid main tank 8, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tank 8 by the respective valves 212, 213, 214, 233, Is controlled by an on-off system in which the supply of the polymer solution is controlled and controlled.

That is, when the polymer spinning solution is supplied to the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tank 8 through the supply pipe 240, The opening and closing of the valves 212, 213, 214 and 233 provided in the supply pipe for supplying the main tank 8 and the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, The nozzle tubes 112b, 112d, 112f, 112g, 112h, 112i, 112f, 112g, 112h, 112i at specific positions among the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112b, 112c, 112d, 112e, 112e, 112c, 112d, 112e, 112e, 112e, 112e, 112e, 112e, 112e, 112e, 112f, 112g, 112h and 112i of the polymeric spinning solution is controlled and controlled.

The spray liquid main tank 8 and the nozzle tubes 112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, and 112i are connected to the supply pipe 240 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i in the spinning liquid main tank 8 are provided with valves 212, 213, 214, The nozzle tubes 112a, 112b, 112c, 112d, and 112d, which are arranged in the nozzle block 111 by opening specific valves 212, 213, 214, and 233 among the plurality of valves 212, 213, 214, 112b, 112d, 112f, 112g, 112h, 112i of the nozzle tubes 112a, 112b, 112e, 112f, 112g, 112h, 112i, 213, 214, and 233, such as blocking the supply of the polymer solution, to only the nozzle tubes 112a, 112c, and 112e at specific positions in the nozzle tube body arranged in the nozzle block 111, Room used by In the main tank 8 is supplied to the polymer spinning solution to be supplied to each nozzle tube (112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i) is adjusted 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 addressed, (111a).

The means for regulating the amount of radiation comprises valves 212, 213, 214 and 233.

By providing the valves 212, 213, 214 and 233 as the radiation amount adjusting means, it is possible to supply the respective nozzles 111a from the supply pipe 240 by opening and closing the valves 212, 213, 214 and 233 The valves 212, 213, 214 and 233 are controllably connected to a controller (not shown), and the valves 212, 213, 214, It is also possible that the opening and closing of the valves 212, 213, 214, and 233 are manually controlled according to the situation of the field and the operator.

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

In the present invention, valves 212, 213, 214 and 233 are provided in the supply pipe 240 so that the nozzle tubes 112a, 112b, 112c, 112d, and 112d of the nozzle block 111 in the spinning liquid main tank 8, 112, 112f, 112g, 112h, 112i, and the valves 212, 213, 214, 233 are provided in the supply pipe 240 to control the flow rate of the polymer tubing liquid supplied to the nozzle tubes 112a, 112b, 112c, 112c, 112c, 112d, 112c, 112d, 112e, 112f, 112g, 112h, 112i and regulating and controlling the radiation amount of the polymer spinning solution which is electrospun through each nozzle 111a, The nanofiber membranes having different basis weights are formed in the width direction of the base material 115 by the polymer spinning solution which is electrospun in the respective nozzles 111a of the base materials 111a to 112d, 112e, 112f, 112g, 112h and 112i.

The nanofiber membranes produced according to the present invention are characterized in that they have different basis weights in the width direction, i.e., the CD direction or the transverse direction, or are electrospun and stacked in the longitudinal direction, that is, 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).

FIG. 5 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, and FIG. 6 is a plan view showing a state in which the basis weight of the polymer in the CD direction, As described above, the operation of the nozzles in the spinning solution unit can be electrically turned on and off to form nanofiber membranes having different basis weights in the CD direction. 7 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 MD direction. As described above, the operation of the nozzle in the spinning solution unit is electrically turned on and off, Nanofiber membranes can be formed.

The nanofiber membrane thus prepared preferably has a basis weight of 3 to 15 g / m < 2 >, and the thickness of the nanofiber membrane to be produced is preferably 3 to 20 mu m. If the basis weight is less than 3 g / m < 2 > or the thickness is less than 3 mu m, the mechanical properties are deteriorated. If the basis weight exceeds 15 g / m 2 or the thickness exceeds 20 m, the properties of air permeability and waterproofness are deteriorated. The air permeability of the nanofiber membrane produced by the present invention is preferably 0.1 to 2 cm 3 / cm 2 / sec and the moisture permeability is 20,000 or less.

The nanofiber membrane prepared as described above is composed of a polyester sandwich mesh and a herringbone layer to form a three-layer fabric for a shoe upper. Here, it is also possible that an adhesive is applied to one side or both sides of the nanofiber membrane constituting the intermediate layer of the three-layer fabric and laminated.

The adhesive may be applied by applying a low-melting-point polymer or an adhesive, or alternatively, a material used as an adhesive may be separately electrospun.

The present invention relates to an electrospinning apparatus for manufacturing a nanofiber membrane used as a component of a shoe upper member. In the case where a basis weight of a nanofiber membrane used in a shoe upper member is different, Or a tailor made for a custom shoe upper.

In the fabricated nanofiber membrane and support, the nanofiber membrane is separated from the support and the sandwich mesh and herringbone are laminated on both sides of the separated nanofiber membrane, and the fabric for the shoe upper is produced by laminating the sandwich mesh and the herringbone. It is also possible to use a sandwich mesh or a herringbone as the support and fabricate the direct nanofiber membrane by electrospinning.

Hereinafter, a method of manufacturing a fabric for a shoe upper according to an embodiment of the present invention will be described.

A step of preparing a support, a step of moving the support to an electrospinning device, electrospinning a polymer spinning solution on one surface of a support, laminating a nanofiber membrane, separating a laminate on which the nanofiber membrane is laminated, And attaching a sandwich mesh and a herringbone to both surfaces of the nanofiber membrane, and laminating the laminate, wherein the polymer is one or more selected from the group consisting of polyurethane, polyvinylidene fluoride, and polyethylene terephthalate Wherein the nanofiber membrane is formed by electrospinning the polymer spinning solution with different basis weights in the transverse direction or the longitudinal direction. The present invention also provides a method for manufacturing a fabric for a shoe upper.

In addition, the nanofiber membrane may be electrospun to be transversely or longitudinally biased. Finally, a nanofiber membrane having different basis weights is formed on the substrate, and then a sandwich mesh and a herringbone are respectively attached to both sides of the nanofiber membrane The shoe upper fabric is manufactured in accordance with the intention of the user who desires to increase or decrease the waterproofing and dustproofing performance of customized or specific parts due to differences in basis weight of the nanofiber membrane.

Since the fabric for the shoe upper manufactured as described above is used as a shoe upper, it is suitable to be used as a fabric for a shoe upper because it satisfies both waterproof property and air permeability at the same time.

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

[Example 1]

20% by weight of polyurethane was dissolved in 80% by weight of NN-dimethylacetamide (DMAc) solvent to prepare a polymer spinning solution having a concentration of 20% and a viscosity of 1000 cps. The polymer spinning solution was added to each spinning solution main tank The nozzle block including the on-off system designed to separate the nozzle block into two parts in the direction of the CD and to be connected to each independent main tank was applied with an applied voltage of 20 kV and electrospun on the art paper used as the support. On the electrospun collector, polyurethane nanofibers having a basis weight of 3 g / m < 2 > of 20 inches in one direction of the CD direction and a CD of 42 inches having a basis weight of 10 g / . The prepared polyurethane nanofiber membrane was separated from the support and a polyester sandwich mesh having a basis weight of 423 g / m < 2 > and a width of 62 inches was laminated on one side of the prepared nanofiber membrane. On the other side of the nanofiber membrane, a nylon 70 denier yarn and a polyester 75 denier yarn are positioned at a mixing ratio of 35:65. Where the herringbone had a basis weight of 140 g / m 2 and a width of 65 inches. The polyester sandwich mesh and the herringbone were placed on both sides of the nanofiber membrane as described above, and the laminated laminate was laminated to fabric the shoe upper fabric.

[Example 2]

A fabric for a shoe upper was prepared in the same manner as in Example 1 except that the polyurethane used as a spinning solution was changed to polyvinylidene fluoride.

[Example 3]

A fabric for shoe upper was prepared in the same manner as in Example 1, except that the polyurethane used as the spinning solution was changed to polyethylene terephthalate.

[Example 4]

A fabric for a shoe upper was prepared in the same manner as in Example 1, except that an epoxy adhesive was applied to both sides of the nanofiber membrane and the laminated laminate was laminated by placing the jacquard fabric and herringbone.

[Comparative Example 1]

A fabric for a shoe upper was prepared in the same manner as in Example 1 except that a polytetrafluoroethylene film was used in place of the nanofiber membrane.

Air permeability and moisture permeability of the fabric for shoe upper fabric manufactured by Examples and Comparative Examples were measured.

1. Measurement of air permeability

Air permeability was measured with a gas permeance analyzer (GPA-2001, B, S Chem. Co., LTD).

2. Measurement of moisture permeability

The moisture permeability was measured according to JIS L1099A-1.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Air permeability (cm3 / cm2 / sec) 1.9 0.9 0.5 0.2 - Water vapor permeability (mmH2O) 9500 13000 11000 9000 25000

Thus, in Examples 1 to 4 of the present invention, the fabric for a shoe upper comprising a manufactured nanofiber membrane has excellent air permeability, whereas Comparative Example can not measure air permeability. The water vapor permeability is lower than that of the comparative example in that the water vapor permeability is more excellent. Also, in Examples 1 to 4, since the range of the air permeability and the moisture permeability are controlled by varying the basis weight of the nanofiber membrane, it is advantageous in that it can be used in a portion where high air permeability and moisture permeability are required for use in shoes Effect.

As described above, the fabric of the shoe upper 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 all or part of the embodiments so that various modifications can be made. Some of which may be selectively combined.

1: electrospinning device, 3: feed roller,
5: take-up roller, 7: main control device,
8: Main tank,
10a: front end unit 10b: rear end unit
11: nozzle block, 12: nozzle,
13: collector, 14, 14a, 14b: voltage generator,
15, 15a, 15b: long sheet, 16: auxiliary conveying device,
16a: auxiliary belt, 16b: auxiliary belt roller,
18: case, 19: insulating member,
30: Long sheet conveying speed adjusting device, 31: Buffer section,
33, 33 ': support roller, 35: regulating roller,
40: tube body, 41, 42: heat wire,
43: pipe, 60: temperature control device,
70: thickness measuring device, 80: air permeability measuring device,
90: laminating device, 111: nozzle block,
111a: nozzle, 112: nozzle tube,
112a, 112b, 112c, 112d, 112e, 112f, 112g, 112h, 112i:
115: substrate, 115a, 115b, 115c: nanofiber membrane,
200: overflow device,
211, 231: stirring device, 212, 213, 214, 233: valve,
216: second transfer pipe, 218: second transfer control device,
220: intermediate tank, 222: second sensor,
230: regeneration tank, 232: first sensor,
240: supply piping, 242: supply control valve,
250: circulating fluid recovery path, 251: first transfer pipe,
300: VOC recycling apparatus, 310: condensing apparatus,
311, 321, 331, 332: piping, 320: distillation device,
330: solvent storage device, 404: air supply nozzle.

Claims (7)

Sandwich mesh composed of polyester;
A nanofiber membrane on the sandwich mesh; And
And a herringbone consisting of nylon and polyester on the nanofiber membrane,
The basis weight of the sandwich mesh is 400 to 450 g / m ² ,
The herringbone is the mixing ratio of nylon and polyester 30:70 to 40:60, the basis weight is from 130 to 150g / m ^2,
Wherein the nanofiber membrane is one or more selected from the group consisting of polyurethane, polyvinylidene fluoride and polyethylene terephthalate, the basis weight is 3 to 15 g / m ² , the thickness is 3 to 20 탆,
Wherein the shoe upper has an air permeability of 0.1 to 2 cm ³ / cm ² / sec and a moisture permeability of 20,000 mmH ₂ O or less.
The method according to claim 1,
Wherein the nanofiber membrane is fabricated by electrospinning the polymeric spinning solution in a transverse or longitudinal direction with different basis weights.
delete delete delete delete The method according to claim 1,
Characterized in that an adhesive is applied and laminated on one or both sides of the nanofiber membrane, and the fabric is air permeable and waterproof.

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