KR101791645B1 - Manufacturing of conductive coating glove and conductive coating glove manufactured by the same - Google Patents

Abstract

The present invention provides a method for manufacturing conductive coating gloves and to the conductive coating gloves manufactured by the method, wherein the conductive coating gloves comprise: a fibrous layer made of nonmetallic fibers and formed in the form of gloves; and a plurality of coating layers respectively formed on fingertips on a palm side of the fibrous layer, wherein the coating layer comprises a conductive material and a polyurethane binder, and the surface resistivity of the coating layer is in the range of 1.0x10^5 to 1.0x10^6 ohm/sq, so that even if the gloves are worn, it is possible to perform a touch operation stably in the same manner as when a touch-type electronic device or a device is manually operated, thereby having no need to take off the gloves.

Description

TECHNICAL FIELD [0001] The present invention relates to a conductive coating glove and a conductive coating glove manufactured by the method.

The present invention relates to a conductive coating glove manufactured by a method and a manufacturing method thereof, and more particularly to a conductive coating glove prepared by coating a coating layer The present invention also relates to a conductive coating glove produced by the method and a method for manufacturing the conductive coating glove.

As the use of smart phones, etc. increases, the smart devices are used by touching methods at various work sites where workers wear gloves. Since the touch operation is not performed when the gloves with the surface coating are worn, workers can use gloves It is inevitable that there is a lot of hassle to worn it according to.

To solve this problem, there is disclosed a glove in which a fibrous layer is coated with a conductive metal or a metal fiber is stitched together. However, since the conventional gloves have a touch performance in the fibrous layer itself, not only the production cost is high, but also when the coating layer is formed thickly on the fibrous layer, there may arise a problem that the conductivity is not realized properly. The metal layer may be oxidized or peeled off from the fiber layer, so that durability and lifetime are not strong.

Also, as a glove capable of touching the surface of a smart device, there is an antistatic glove in which a carbon dispersion is attached to a fibrous layer, or a glove which is surface-treated with a secondary coating. However, most of these gloves are intended to prevent static electricity. Since they have a high surface resistance, they are unstable for touching electronic devices such as smart phones, and it is difficult to ensure stable touch performance performance due to environmental changes and deteriorated physical properties after washing, In order to realize a certain level of touch performance, there is a problem in that the efficiency of the process is low, for example, the coating layer must be formed in two or more layers.

In addition, the content of only the general conductive carbon species can be increased to form the main coating layer to produce the conductive glove. However, the conductivity of the conductive carbon has low self-conductivity, so that the content of the conductive carbon should be increased to obtain a certain level of performance. In this case, there is a problem in that it is difficult to realize a product of gray color which is a required color of the main consumer layer because the basic content of the glove becomes weaker and the color becomes black only because of a too high carbon content relative to the binder content.

Korean Registered Utility Model No. 20-0474208 Korean Patent Registration No. 10-1397262

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a coating layer that implements surface resistance and conductivity similar to human bare hands by a single coating process at the fingertips, And an object of the present invention is to provide a conductive coating glove and a method of manufacturing the same.

Another object of the present invention is to provide a method for producing a conductive coating glove capable of realizing gray color with high basic durability and strength and a conductive coating glove produced by the method.

According to an aspect of the present invention, there is provided a fibrous layer formed of nonmetallic fibers and formed in the form of a glove; And a coating layer formed on an end of at least one of the fingers on the palm side of the fibrous layer; Wherein the coating layer comprises a conductive material and a polyurethane binder, wherein the coating layer has a surface resistance of from 1.0 x 10 ⁵ to 1.0 x 10 ⁶ ohm / sq.

According to a preferred aspect of the present invention, the conductive material of the coating layer is selected from the group consisting of acetylene black, oil black, thermal black, conductive carbon, Ketjen black, channel black, graphite, carbon nanotubes, conductive titanium oxide, Carbon fiber, or a composite material of two or more of them.

According to a preferred aspect of the present invention, the coating layer may comprise 10 to 25 parts by weight of the conductive material dispersion and 10 to 25 parts by weight of the additive, based on 100 parts by weight of the polyurethane binder.

According to another aspect of the present invention, there is provided a method for manufacturing a semiconductor device, comprising: preparing a coating liquid by integrating a conductive material dispersion prepared by milling a conductive material and a polyurethane binder; Attaching the endothelium knitted with nonmetal fiber to a mold formed in a glove shape and injecting the coating liquid into a position corresponding to a fingertip portion; Coagulating the coating liquid at 30 to 50 ° C, removing the used diluting solvent at 55 to 70 ° C, and removing moisture at 100 to 130 ° C to form a coating layer; Wherein the coating layer has a surface resistance of 1.0 x 10 ⁵ to 1.0 x 10 ⁶ ohm / sq.

According to a preferred aspect of the present invention, the coating layer may be formed by injecting the coating solution into the mold having the inner film, and solidifying the coating solution, removing the diluting solvent, and removing the moisture only once.

According to a preferred aspect of the present invention, in the step of preparing the coating liquid, the conductive material is at least one selected from the group consisting of acetylene black, oil black, thermal black, conductive carbon, Ketjen black, channel black, graphite, carbon nanotubes, , Conductive zinc oxide, and fine carbon fibers, or a composite material of two or more of them may be used.

According to a preferred aspect of the present invention, the coating liquid may include 10-25 parts by weight of the conductive material dispersion, 10-25 parts by weight of the additive and 120-220 parts by weight of the diluting solvent, based on 100 parts by weight of the polyurethane binder.

The conductive coated glove manufactured according to the present invention can be operated in a stable manner by touching the touch-type electronic device or the device even when wearing the coating glove, so that it is not necessary to remove the gloves, Can be dramatically increased.

In addition, according to the manufacturing method of the present embodiment, a desired level of conductive performance can be achieved by a single coating process rather than a multi-coating (twice or three times) method, and a metal yarn There is an effect that the manufacturing cost can be reduced.

In addition, since only a small amount of high-performance conductive agent is used, it is possible to realize a product of gray color which is the most sold, as well as a product of black color, and there is no damage of conductivity permanently even after washing, It can provide a level similar to that of conventional non-conductive gloves in terms of length, fit and strength.

1 is a perspective view schematically showing a conductive coating glove according to an embodiment of the present invention.
2 is a sectional view showing the layer structure of part A of Fig.
FIG. 3 is a flowchart illustrating a method of manufacturing a conductive coated glove according to an embodiment of the present invention.

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

Prior to the description of the present invention, the following specific structure or functional description is merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms , And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Conductive Coated Gloves

1 and 2, the coating glove 100 of the present embodiment includes a fibrous layer 10 and a plurality of coating layers 20 formed on the fingertip side of the fibrous layer 10, respectively. The surface resistance of this coating layer 20 is 1.0 x ¹⁰ < ⁵ > to 1.0 x ¹⁰ < ⁶ > ohm / sq, which is similar to the surface resistance of human hands.

At this time, the coating layer 20 may be formed over the entire surface of the palm if necessary. However, in general, since the finger is used when using the touch-type electronic device, the formation of the coating layer 20 only on the fingertip portion as in the present embodiment will increase the touch efficiency while reducing the cost.

In addition, the coating layer 20 includes a conductive material and a polyurethane binder. The coating layer 20 of the present embodiment may include 10 to 25 parts by weight of the conductive material dispersion and 10 to 25 parts by weight of the additive with respect to 100 parts by weight of the polyurethane binder.

If the content of the conductive material dispersion is less than 10 parts by weight, the conductive performance may not be achieved properly. If the content of the conductive material dispersion exceeds 25 parts by weight, The color of the coating layer 20 may not be uniform as a whole, may be stained, and the manufacturing cost may be increased.

The conductive material dispersion may be one of acetylene black, oil black black, thermal black, conductive carbon, Ketjen black, channel black, graphite, carbon nanotubes, conductive titanium oxide, conductive zinc oxide and fine carbon fibers, Or a combination thereof.

The additive may be at least one or more of a defoaming agent, an intensifier, a cell modifier, a softener, a conductive additive, an anti-blocking agent, and a touch modifier. If the content of the additive is less than 10 parts by weight, problems may occur such as surface defects such as bubbles or unevenness on the surface of the formed coating layer and strength of the coating layer. When the content of the additive exceeds 25 parts by weight, There may be a problem of deterioration of the touch sensitivity and a problem of deterioration of the display which may contaminate the display surface. The above-mentioned property is a characteristic that when the additive components are included in an excessive amount, it is transferred to the adherend upon migration and the extent to which the adherend can be contaminated.

Manufacturing method of conductive coated gloves

Hereinafter, a method for manufacturing a conductive coating glove according to an embodiment of the present invention will be described in detail.

Referring to FIG. 3, the method for manufacturing the conductive coating glove according to the present embodiment includes a knitting step (S5), a coating liquid manufacturing step (S10), and a coating layer forming step (S70) for coating the coating liquid on the fiber layer.

The knitting step S5 is a step of forming a fiber layer which is an inner skin of the glove. The fiber layer may be one of polyamide-based fibers such as cotton, nylon, polyester, spandex- At least three or more of the fibers may be used in combination to form a fiber layer. At this time, the metal-related fibers are not used, and only the non-metal-based fibers can be knitted to form the fibrous layer.

The step (S10) of producing the coating liquid is a step of producing a coating liquid by integrating the conductive material and the polyurethane binder. For this purpose, first, a conductive material dispersion and a polyurethane binder are provided.

The conductive material may be a conductive carbon black based material. Examples of the conductive carbon black based conductive material include an acetylene black, an oil black black, a thermal black, a conductive carbon, a hollow cell type particle structure having a needle-shaped particle structure and a compatibility and oil absorption of a predetermined level or more, Channel black, graphite, carbon nanotubes, conductive titanium oxide, conductive zinc oxide, and fine carbon fibers, which have compatibility and oil absorption of at least the same level as that of carbon black.

The carbon nanotubes are multi-wall carbon nanotubes (MWCNTs) (MWCNTs), preferably nanomaterials having a diameter of several nanometers, Can be used. Even if a small amount of such a carbon nanotube is injected to form a coating layer, the surface resistance of the coating layer may be low and there is no problem in dispersion performance and compatibility when forming a coating layer.

The graphite has a low thermal expansion coefficient due to the relationship between the crystal structure and the atomic value, and has excellent thermal conductivity and thermal shock resistance.

On the other hand, among the conductive materials, the conductive paste which is a metal powder such as copper, gold, silver, aluminum and nickel, or a composite of metal and polymer, which is a metal material itself, has high sedimentation tendency and corrosive taste of the metal material, Inappropriate. In addition, the organic conductive polymer composite material among the conductive materials is not suitable for this embodiment because it is mostly removed in the washing process during the glove manufacturing process.

When the particle size of the conductive material is small, there is no abnormality after the formation of the coating layer. However, when the particle size of the conductive material exceeds the reference value (to the extent that the coating film has a uniform coating composition of the glove) or the dispersion property of the conductive material is poor This may cause defective glove surface to become uneven after coating.

Thus, it is possible to carry out a work of making a dispersion of a uniform size through a milling process before coating the conductive material. The milling process may be performed, for example, using a triple mill, a dyno mill, a homomixer, and a basket-bead mill, and the milling method of the present invention is not limited thereto. If necessary, the polyurethane binder, which is a main coating polymer, may be added to the conductive material by a small amount before the milling process.

The polyurethane binder is required to have excellent adhesion, flexibility and abrasion even when a large amount of conductive material is added thereto, and one to three kinds of polyurethane resins can be used in combination.

The polyurethane resin is synthesized by reacting a polyol with isocyanate. The polyol may be a polyether polyol, a polyester polyol, a polycarbonate polyol, or the like. The isocyanate may be a polyisocyanate of at least two functional groups. The isocyanate may be an aromatic isocyanate such as toluene diisocynate (TDI), methylene diphenyl diisocynate (MDI), an aliphatic isocyanate, an alicyclic isocyanate And derivatives thereof. As the chain extender, ethylene glycol, diethylene glycol, 1,4-butanediol, 1.6 hexanediol, neopentanediol, and dipropylene glycol may be used.

The polyurethane binder of the present embodiment is a solution type flexible polyurethane binder having a number average molecular weight of 200,000 to 100,000,000, a solid content of 25 to 35% by weight, a 100% modulus value of 10 to 60 Kgf / cm ² < / RTI >

Next, a coating solution is prepared by using the conductive material dispersion and the polyurethane binder prepared as described above.

First, the conductive material dispersion, the additive, the diluting solvent, and the like are mixed in the polyurethane binder, and then the mixture is stirred evenly for 1 hour or more in a high-speed mixer. In this case, the mixing ratio of each material may be 10 to 25 parts by weight of the conductive material dispersion, 10 to 25 parts by weight of the composite additive, and 120 to 220 parts by weight of the diluting solvent, based on 100 parts by weight of the polyurethane binder.

When the content of the conductive material dispersion is less than 10 parts by weight, the conductive performance may not be realized properly. If the content of the conductive material dispersion exceeds 25 parts by weight, defects may occur on the surface of the coating layer, Can be formed entirely nonuniformly and the manufacturing cost can also be increased.

The additive may be at least one or more of a defoaming agent, an intensifier, a cell modifier, a softener, a conductive additive, an anti-blocking agent, and a touch modifier. If the content of the additive is less than 10 parts by weight, problems may occur such as surface defects such as bubbles or unevenness on the surface of the formed coating layer and strength of the coating layer. When the content of the additive exceeds 25 parts by weight, There may be a problem of deterioration of the touch sensitivity and a problem of deterioration of the display which may contaminate the display surface.

If the content of the diluting solvent is less than 120 parts by weight, the touch may become hard and the feeling of wearing may be deteriorated. If the content of the diluting solvent exceeds 220 parts by weight, the strength of the coating layer may be excessively decreased, . In addition, since the coating layer is formed only on the fingertip portion of the glove, the amount of the diluting solvent and the additive can be increased by increasing the viscosity of the coating liquid when the coating layer is formed on the palm side of the glove have.

On the other hand, the coating liquid may further include a toner in order to match the hue desired to be implemented in the coating layer. The conductive white toner may be prepared by combining a conductive pigment and a conductive auxiliary agent so as to improve conductivity, and performing a milling process in advance. In this embodiment, 10 to 30 parts by weight of toner may be further added to 100 parts by weight of the polyurethane binder to form gray color.

The viscosity of the coating solution thus prepared is preferably 300 to 600 cps / 25 占 폚 for a product in which a coating layer is formed only at the fingertip, and 700 to 1500 cps / 25 占 폚 for a palm coating product.

Next, the knitted fabric is mounted on the mold formed in the form of a glove (S20). Then, the previously prepared coating liquid is put into the dipping coating tank to perform coating (S30).

Next, the coating layer is solidified through a wet coagulation step in which the coating layer is passed through a coagulation bath at 30 to 50 DEG C for about 10 minutes (S40). At this time, DMF (Di-methyl formamide) may be preferably used as the diluting agent for the wet coagulation step. If the solidification temperature is less than 30 ° C, the solidification rate may be too slow and the strength of the coating layer may be lowered. If the solidification temperature exceeds 50 ° C, the solidification rate becomes too fast, The wear comfort of the wearer may be deteriorated.

Next, a water washing step of passing the water bath of 55 to 70 DEG C for 10 minutes or longer is performed to remove the used diluting solvent component (S50). If the temperature of the water washing step is less than 55 ° C, defective solvent may be insufficient to cause surface defects of the coating layer. If the temperature of the water washing step exceeds 70 ° C, the water evaporation amount increases and the fuel cost increases. Can rise.

Next, water is removed through a drying line (drying chamber) at 100 to 130 ° C to dry the glove on which the coating layer is formed (S60). If the drying temperature is less than 100 ° C., the drying may not be performed properly. If the drying temperature is more than 130 ° C., the glove may become hard and the wearing feeling may be deteriorated. On the other hand, if the removal of residual solvent and moisture is insufficient in accordance with the process line, the washing and drying process can be further performed.

Thereafter, the product is demolded from the mold, quality inspection is performed, and packaging is performed. At this time, the surface resistance of the coating layer formed on the conductive coating glove may be 1.0 x 10 ⁵ to 1.0 x 10 ⁶ ohm / sq. The conductive coating glove manufactured by the above method has excellent appearance, soft feeling and strength, and the surface resistance of the glove material is 10E ⁵ / sq when measured according to the ASTM D257 method. Performance is derived.

In this embodiment, since the coating liquid is formed by compounding the conductive material in the main coating system in the form of an inner coat, the coating liquid is put into the mold with the inner film, and the coating liquid coagulation, diluting solvent removal, A single coating process can form a coating layer that exhibits semi-permanent conductive properties, so that the performance is maintained even after washing. Therefore, manufacturing cost and time can be saved compared to the conventional coating method of 2-3 times or more.

Experimental Example

The coating liquid used for forming the coating layer is a conductive coating material prepared by dispersing the conductive material dispersion 20 (100 parts by weight) in 100 parts by weight of a polyurethane binder (B-1035H, 25 parts by weight of the conductive white toner, 20 parts by weight of the additive and 170 parts by weight of the diluting solvent are mixed and then mixed at a high speed for 30 to 60 minutes.

The conductive material dispersion was prepared by mixing 20 wt% of a polyurethane binder (Besthane-1050N) with 2 wt% of carbon nanotubes (K-Nanos 100, KKPC) and 8 wt% of acetylene black (Shawinigan Black, CP Chem) And 1% by weight of a dispersant (BYK-9076, Byk) and a diluting solvent (DMF, Samsung Fine Chemical) are further mixed and milled to prepare the mixture.

Comparative Example 1 is a glove made only of a carbonaceous inner skin without a conductive material, Comparative Examples 2 to 4 are manufactured by the same method as in Examples, and the conductive material dispersions are made different as shown in Table 1, respectively. The conditions of the coating liquids of Comparative Examples 1 to 4 and Examples, the appearance of the gloves, the surface resistance of the coating layer, and the touch performance are shown in Table 1 below. In Table 1 below, # 1 to # 4 show results for Comparative Examples 1 to 4, respectively, and # 5 shows matters for Examples.

# The content of the conductive material dispersion
(Parts by weight) The state of the coating liquid Gloved
Exterior Surface resistance
(Ω / sq) Touch performance One 0 - Good 5.0x10 ⁹ Bad 2 4 Good Good 9.0x10 ¹⁰ Bad 3 8 Good Good 5.0x10 ⁹ Bad 4 35 Increased plasticity Bad 1.0x10 ⁵ Good 5 20 Good Good 6.0x10 ⁵ Good

Referring to Table 1, in the case of # 1 of Comparative Example 1, the appearance of the glove was good, but the surface resistance of the glove was within the antistatic range (1.0 × ^{10 9} to 9.0 × ^{10 10} ). Thus, the antistatic performance is realized, but the touch function is not properly implemented.

In the case of Comparative Examples 2 and 3, the content of the conductive material dispersion was less than the preferred value of the present invention. Although the appearance of the glove was good, the surface resistance of the coating layer was high, I did. Particularly, in the case of # 2 having a relatively small amount of the conductive material dispersion, the surface resistance of the coating layer is greatly increased and the antistatic performance can not be stably achieved.

In the case of Comparative Example 3, # 4, the content of the conductive material dispersion exceeded the desirable value of the present invention. The surface resistance of the coating layer was within the range of the touch function, but the appearance of the glove was poor. In addition, the gray color of the coating layer can not be realized due to an increase in the rickleness of the coating liquid. Further, if the content of the conductive material dispersion is increased, the manufacturing cost of the glove can be increased.

On the other hand, in the case of the embodiment # 5, the appearance of the glove was good and the surface resistance of the coating layer was within the scope of the touch function realization, and the touch performance was good.

The present invention is not limited by the above-described embodiment and the accompanying drawings, but is intended to be limited by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

10: fibrous layer
20: Coating layer
100: Coated gloves

Claims (7)

Preparing a coating liquid by integrating a conductive material dispersion prepared by milling a conductive material and a polyurethane binder;
Attaching the endothelium knitted with nonmetal fiber to a mold formed in a glove shape and injecting the coating liquid into a position corresponding to a fingertip portion;
Coagulating the coating liquid at 30 to 50 ° C, removing the used diluting solvent at 55 to 70 ° C, and removing moisture at 100 to 130 ° C to form a coating layer; Lt; / RTI >
Wherein the coating layer has a surface resistance of 1.0 x 10 ⁵ to 1.0 x 10 ⁶ ohm / sq. The method according to claim 1, wherein the coating layer is formed by injecting a coating solution into a mold having an inner film, and removing the coagulating solution, the diluting solvent, and the moisture removing step. The method according to claim 1, wherein in the step of preparing the coating liquid, the conductive material is selected from the group consisting of acetylene black, oil black, thermal black, conductive carbon, Ketjen black, channel black, graphite, carbon nanotubes, Zinc oxide, and fine carbon fibers, or a composite material of two or more thereof. The coating liquid according to claim 1, wherein the coating liquid comprises 10 to 25 parts by weight of a conductive material dispersion, 10 to 25 parts by weight of an additive and 120 to 220 parts by weight of a diluting solvent, based on 100 parts by weight of the polyurethane binder. A method for manufacturing a coated glove. A conductive coated glove made according to claim 4,
The polyurethane binder is a flexible polyurethane binder of the solution type, the number average molecular weight and 20,000 million to 100,000, only a solid content is 25 to 35wt%, and wherein 100% modulus (Modulus) with a value of 10 to 60Kgf / cm ² Conductive coated glove delete delete

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