KR102432694B1 - Nano lacquering method of leather and products manufactured by it and the machine - Google Patents

Abstract

The present invention relates to a method for coating leather with usushi nano lacquer and an apparatus for manufacturing usushi nano lacquer. More specifically, the present invention relates to an improved method for coating leather with usushi nano lacquer configured to increase the glossiness and clarity of color as well as the strength of the usushi nano lacquer by coating the surface of leather products with usushi nano lacquer, and to an improved apparatus for manufacturing usushi nano lacquer, wherein the leather products include a leather bag, a leather handbag, and a leather coffee machine, and the like. According to the present invention, it is possible to implement high quality leather products having waterproofing, air-permeable, and complementary color properties, while maintaining the texture of genuine leather.

Description

Nano lacquering method of leather and products manufactured by the same, and nano lacquer manufacturing apparatus {Nano lacquering method of leather and products manufactured by it and the machine}

The present invention relates to a nano-lacquer method for leather, a product manufactured by the method, and a nano-lacquer manufacturing apparatus, and more particularly, to a leather bag, handbag, coffee product, etc. It relates to a nano-lacquer method for leather improved to realize high-quality leather products with waterproof, breathable and complementary color properties while maintaining the texture of natural leather by increasing the strength of the leather, and to a product manufactured by the method and a nano-lacquer manufacturing apparatus.

Traditionally, lacquer lacquer is completed through refining and transparent lacquering through the same process as in the example of FIG.

At this time, the purification for lacquer is very important because the quality of the lacquer product is different as shown in the figure below according to the precision and the ratio of ingredients according to the refining process of lacquer.

[Comparison photo of particle homogeneity and microstructure of coating film before and after purification]

In addition, as shown in Table 1 below, lacquer is very superior to petrochemical paints in terms of oil resistance and eco-friendliness, so it is widely used in expensive products.

division heat resistance corrosion resistance oil resistance Eco japan <200℃ Great Great O Epochy 150~300℃ Great usually X Polyurethane lowness Great usually X

Nevertheless, lacquer lacquer traditionally can only be completed through 36 processes, so it faces productivity problems due to the production period and repair of defects.

If some processes are shortened in order to increase productivity, glossiness of color, transparency, etc. are deteriorated, and furthermore, the strength of the lacquered coating film is lowered and durability is deteriorated.

Therefore, it is urgent to study a lacquer method that can have characteristics equal to or higher than that of traditional lacquer even if the process is shortened while taking advantage of such advantages of lacquer so that it can be applied to a wide variety of industries, especially leather craft products, to realize high quality and luxury. It's time to do it

In particular, in the case of leather, if it is dyed or coated using dyes, it is difficult to maintain the texture of natural leather, and the complementary color property of maintaining the original color is also deteriorated while the color is discolored. There is also the disadvantage of weakening the durability of the leather.

Domestic Registered Patent No. 10-2151924 (2020.08.29.) Manufacturing method of molding lacquered leather fabric

The present invention was created to solve the problems in the prior art as described above, by lacquering the surface of leather such as leather bags, handbags, and coffee products to increase the glossiness, transparency, and strength of the lacquer layer. Its main purpose is to provide a nano-lacquer method for leather improved to realize high-quality leather products with waterproof, breathable and complementary color properties while maintaining the texture of natural leather, a product manufactured by the method, and a nano-lacquer manufacturing apparatus.

The present invention is a means for achieving the above object, prepare a wooden mold, pull leather to the wooden mold and fix it, tie it with a rubber band, and dry it for 20-30 days in a shady place with ventilation; When the backbone is produced, the outer surface of the leather fixed to the backbone is primed with a raw lacquer, dried and then polished to prime the skin and grind the unglazed surface; The chaebol undercoating and grinding process of chaebol undercoating and grinding of the chaebol undercoating with P320 sandpaper after drying the chaebol chilmyeon on the polished primed lacquer; Chochilmyeon with a particle size of 210-250nm mixed with selected lacquer liquid and turpentine in a weight ratio of 3:1 is applied to the polished chaebol chilmyeon, then dried in a chiljang, and then the chochilmyeon is ground with P600 sandpaper. process; A re-coating and re-coating process of using the lacquer solution on the polished lacquer surface as it is, repainting it once again, drying it, and polishing it with P600 sandpaper; When the re-painting is completed, the wooden mold removal process is to remove the leather fixed on the wooden mold and arrange and trim the inside of the leather; An endothelial priming saengchil solution in which raw chil and pine essential oil are mixed in a weight ratio of 3:1 is applied to the endothelium, dried in a chiljang, and the endothelial primed saengchil catfishing and priming saengchil lacquer grinding process are performed by grinding the inner priming saengchil lacquer with P320 sandpaper; Endothelial chaebol saengchil catfish and chaebol saengchil catfish and chaebol saengchil chaebol grinding process of performing the same process again as the grinding process of chaebol saengchil catfish and chaebol saengchil catfish; An endothelial lacquering and chochil-myeon grinding process in which raw lacquer and turpentine are mixed in a weight ratio of 4:1 on the endothelium, and after drying, the chochil-myeon is polished; The same process as the second coating of the endothelium and the grinding of the top layer of the skin is performed again, but the middle coating of the endothelium and the grinding of the middle layer of the skin with a medium coating solution having a particle size of 160-200 nm; When the middle coating is completed, fresh lacquer and pine essential oil are mixed in a weight ratio of 4:1, and then topcoat with a topcoat solution with a particle size of 100-150nm that is aged for 1 day. turkey grinding process; It provides a nano-lacquer method of leather, characterized in that it includes; a polishing agent is applied to a cotton wool or cotton cloth and rubbed the painted surface to make it shiny.

At this time, in the endothelial chochil and chochil-myeon grinding process, the grinding of chochil-myeon is characterized by uniformly grinding with water sandpaper of P600-P1000.

In addition, the raw lacquer used in the priming and grinding of the raw lacquer is characterized in that it further comprises 20 parts by weight of petroleum sulfonate and 25 parts by weight of zinc sulfate with respect to 100 parts by weight of the raw lacquer.

In addition, the present invention also provides a product manufactured by the nano-lacquer method of leather described above.

According to the present invention, by lacquering the surface of leather, such as a leather bag, handbag, coffee product, etc., the glossiness, transparency, and strength of the lacquer layer are increased to maintain the texture of natural leather while maintaining waterproof, breathable and complementary color properties. An improved effect can be obtained to realize leather products.

1 is a schematic process diagram showing the generalization of the conventional traditional lacquer method.
2 is a flowchart showing a method of lacquering leather according to the present invention.
3 is a schematic perspective view showing an apparatus for manufacturing leather nano lacquer.
Fig. 4 is a cross-sectional view taken out of the roller of Fig. 3;
5 is a schematic cross-sectional view showing an air circulation unit covered in the nano lacquer manufacturing apparatus of FIG. 3 .
6 and 7 are partial cross-sectional views of FIG. 5 .

Hereinafter, preferred embodiments according to the present invention will be described in more detail.

The nano lacquer method for leather according to the present invention shortens the refining time according to the composition of the raw lacquer, and since the physical properties of the lacquer are changed, the curing time of the lacquer is shortened through process improvement, thereby realizing high productivity and high added value. .

In particular, when applied to leather crafts such as leather bags, handbags, and coffee products, high-quality leather products with waterproof, breathable and complementary color properties while maintaining the texture of natural leather by increasing the gloss, transparency, and strength of the lacquer layer. can be implemented

The lacquer method according to the present invention uses a nano lacquer method. In other words, nano-lacquer has an average particle size of 10㎛ collected from lacquer tree, and the purified liquid is further refined and processed to have a particle size of 100-250 nanometers.

The characteristics of such nano lacquer are well shown in Table 2 below.

industry Performance Advantages of nano lacquer indoor upholstery
interior
electronics case
coffee supplies reinforcing Conventional dish washing was possible 2-3 times, but the color of nano lacquer does not change even after washing 1,000 times or more. durability Resistance to direct sunlight is increased by 70-80%, improving durability UV UV resistant colour Securing color diversity with different colors in the same color scheme drying time Reduced drying time and improved productivity Eco As a natural sap, there are no harmful substances such as atopy, breathing difficulties, and carcinogens from chemical paints abrasive It is a coating agent for anti-corrosion, anti-corrosion and anti-corrosion, and has strong abrasion resistance.

The lacquer lacquer method according to the present invention is characterized in that the number of steps is greatly reduced from the traditional 36 processes to 12 processes. In particular, the biggest feature is that it maintains the texture of natural leather while maintaining waterproof, breathable and complementary color properties.

In addition, it is characterized in that the abrasion resistance is also strengthened by configuring the lacquer layer to further increase the strength and hardness when exposed to ultraviolet rays.

More specifically, the lacquering method according to the present invention includes a white bone manufacturing process, as illustrated in FIG. 2 .

The white bone manufacturing process is a process of preparing a product to be lacquered, that is, a product to be lacquered. In the present invention, the white bone becomes a leather product.

In other words, in the field of lacquer, baekgol means the original wood to be lacquered, but it is commonly referred to as a lacquer material.

The white bone production process according to the present invention is a process of preparing a wooden mold, pulling and attaching leather thereto, fixing it, and drying it for 20-30 days in a ventilated shaded place with a rubber band.

At this time, not only the wooden mold but also the iron mold may be used.

In this way, when the white bone is manufactured, the outer surface of the leather article fixed to the white bone is primed with raw lacquer, dried and then polished, followed by priming and grinding of the primed surface.

Here, the skin undercoating may be completed by raw lacquering and coloring, or by transparent lacquering and black lacquering.

In this case, raw lacquer refers to lacquer liquid that has not been broiled, color lacquer refers to colored lacquer liquid, and black lacquer refers to lacquer liquid that expresses black color by adding iron oxide, iron hydroxide, silver oxide, and podium as colorants.

In particular, in the present invention, 20 parts by weight of petroleum sulfonate and 25 parts by weight of zinc sulfate may be further added to 100 parts by weight of the raw paint.

This is to enhance chemical resistance and chemical resistance while preventing discoloration in the case of petroleum sulfonate; Zinc sulfate is to prevent the migration of harmful components while blocking the penetration of foreign substances and strengthening adhesion.

When the outer skin is primed, it is put in a chiljang to dry. When drying is complete, it is taken out of the chiljang and dried in a ventilated place for 1-2 days, then lightly sanded with P320 sandpaper.

At this time, P320 refers to the roughness of sandpaper, and is classified according to the US STD CAMI, which is the US standard, and the larger the number, the finer the grind.

Next, the chaebol undercoating and grinding process of the chaebol undercoating and grinding of the chaebol undercoating are performed in which the polished primed lacquer is painted with raw lacquer, dried in a chiljang, and then the dried chaebol chilmyun is softened with P320 sandpaper.

After that, the chaebol lacquer noodles are coated with a lacquer liquid mixed with selected turpentine and turpentine in a weight ratio of 3:1, dried in a chiljang, and then the chochil noodles are lightly polished with P600 sandpaper. is carried out

Here, the particle size of the vinegar liquid is preferably 210-250 nm.

In this case, the reason for limiting the particle size of the priming liquid is that if it exceeds 250 nm, there is a high possibility of microcracks, and if it is less than 210 nm, the adhesion with the heavy coating interface may be lowered during heavy coating, so it should be limited to the above range.

In this case, the selected lacquer liquid may be any one of raw lacquer, coloring, transparent lacquer, and black lacquer.

However, in the present invention, saengchil is illustrated as a preferred embodiment.

And turpentine is a natural volatile diluent made by distilling conifers and pine trees. However, if turpentine is contained more than raw chil, it must be contained less than raw chil because it can cause discoloration and discoloration as it is oxidized.

At this time, since the leather product is coated with lacquer, cracking or interfacial separation should not occur.

Therefore, in the present invention, in order to prevent this, in the present invention, 20 parts by weight of dihydroxybutanedioic acid, 15 parts by weight of sodium cocoylethionate, 15 parts by weight of sodium cocoylethionate, An additional 10 parts by weight of the nacite fine powder may be used.

In this case, the dihydroxybutanedioic acid prevents a decrease in voids due to adsorption between particles during mixing, thereby strengthening anchoring properties, and increasing heat resistance and cold resistance to increase adhesion and adhesion stability.

In addition, sodium cocoyl isethionate (Sodium Cocoyl Isethionate) is a white powder obtained through the combination of fatty acids extracted from coconut oil and isethionic acid. While increasing, it suppresses microcracks and cracks and enhances the effect of inhibiting interfacial separation.

In addition, the bastnasite fine powder is a rare earth mineral pulverized to a particle size of 0.1 μm, and it contributes to strengthening stability and adhesion by increasing the bonding force between the components.

Next, the re-coating and re-coating process of re-coating the polished cho-chil surface using the cho-chill liquid as it is, drying it, and polishing it with P600 sandpaper are performed.

In this way, when the repainting is completed, the wooden mold removal process of removing the leather fixed to the wooden mold and arranging and trimming the leather is performed.

Then, the endothelial priming lacquer solution mixed with saengchil and pine oil in a weight ratio of 3:1 is applied to the endothelium, dried in a chiljang, and the endothelial primed saengchil catfish and primed saengchil catfish are polished with P320 sandpaper. A grinding process is carried out.

Here, pine essential oil refers to essential oil obtained by rectifying rosin with steam, and the reason for using pine essential oil is not only for dilution, but also for strengthening durability of lacquer and increasing transparency.

Next, the endothelial chaebolsaengchil catfishing and chaebolsaengchil catfishing catfishing and chaebolsaengchil catfishing catfishing and chaebolsaengchil chaebol saengchil grinding process of performing the same process again as the grinding process of the chaebolsaengchil catfish are performed.

At this time, with respect to 100 parts by weight of the endothelial priming solution, 15 parts by weight of gesso and 15 parts by weight of sulforaphane may be further added.

In this case, Gesso is a kind of acrylic binder emulsion resin, which maintains the uniformity of the base surface to increase color clarity and also increases water resistance.

In addition, sulforaphane (C ₆ H ₁₁ NOS ₂ ) increases resistance to UV rays to maintain discoloration resistance, durability, and crack resistance.

Thereafter, the endothelial lacquer solution in which raw chile and turpentine are mixed in a weight ratio of 4:1 is painted on the endothelium, and after drying, the endothelial lacquering and chochil-myeon grinding processes are performed. At this time, it is preferable that the endothelial vinegar has the same particle size as that applied to the outer skin.

Here, it is necessary to use water sandpaper, not general sandpaper, for polishing the first surface, which is for uniformly grinding the second surface.

To this end, the dried chochil surface is uniformly ground with water sandpaper of P600-P1000, and water sandpaper means sanding while spraying water.

Subsequently, the endothelial chungchil and chungchil-myeon grinding process of performing the same process as the endothelial priming and chochil-myeon grinding process is performed again.

Here, it is preferable that the particle size of the heavy coating liquid is 160-200 nm.

In this case, the reason for limiting the particle size of the heavy coating solution is that if it is less than 160 nm, a layer pattern defect may occur at the interface, and if it exceeds 200 nm, the adhesion with the top coating interface during top coating may decrease, so it should be limited to the above range.

In this way, when the middle coating is completed, the inner and outer shell top coating and the top coating surface grinding process are performed.

In this process, the selected lacquer liquid (this description is limited to raw lacquer) and pine essential oil in a weight ratio of 4:1 is mixed, aged for 1 day, and then polished evenly with P1500-2000 sandpaper so that the underlying coating is not exposed. is a process that

Here, the particle size of the supernatant is preferably 100-150 nm.

In this case, the reason for limiting the particle size of the supernatant liquid is that when it exceeds 150 nm, interfacial protection and decorativeness are deteriorated, and even if it is less than 100 nm, it is not a problem, but it is preferable to maintain an appropriate particle size according to the degree of advancement.

When the topcoating is completed through this process, finally, the roughing process and the chaebol polishing process are performed, which is a process of applying a polishing agent to a cotton or cotton cloth and rubbing the painted surface to make it shiny.

As a result of comparing the physical properties between the nano lacquer method according to the present invention and the general lacquer method, the color clarity and transparency by the nano lacquer method according to the present invention were significantly higher.

In addition, in the case of the coating film strength applied to the leather, the nano lacquer method according to the present invention was much higher, and in the case of the coating film strength after UV irradiation, the strength decreased in the case of general lacquer, but greatly increased in the case of nano lacquer. .

In addition, the process was simplified, the drying time was shortened, and above all, it was possible to realize high-quality leather products with waterproof, breathable and complementary color properties while maintaining the texture of natural leather.

3 is a schematic perspective view showing an apparatus for manufacturing leather nano lacquer.

The nano lacquer manufacturing apparatus of the present invention is configured to include three rollers 100 for making the tablet lacquer into nano lacquer having smaller nanoparticles.

Preferably, the rollers 100 are arranged side by side on the same horizontal line, are arranged to form a nano-gap with each other and are arranged to be in close contact with each other and to rotate in opposite directions to each other.

For example, the first roller 100 is arranged to rotate in a clockwise direction, the second roller 100 in close contact with the first roller 100 is arranged to rotate in a counterclockwise direction, and the third roller 100 in close contact with the second roller 100 is arranged to rotate in a counterclockwise direction. The roller 100 is arranged to rotate in a clockwise direction.

At this time, a main gearbox 20 for transmitting a rotational force to each roller 100 and controlling a gap between each roller 100 is disposed on one side of the rollers 100, and the other side of the rollers 100 Auxiliary gearbox 21 for adjusting the gap between each roller 100 is disposed on the side.

Preferably, an adjustment knob 22 for adjusting the gap between the rollers 100 is mounted on the front portions of the main gearbox 20 and the auxiliary gearbox 21 .

In addition, a driving motor 10 for applying rotational power to the main gear box 20 is connected to the outer portion of the main gear box 20 .

On the other hand, although the first roller 100 and the second roller 100 are in close contact with each other, the tablet coating is injected into the valleys formed, and it is necessary to prevent the injected tablet coating from being pushed out.

To this end, the first and second hopper plates 31, 31 of the same shape that block the tablet coating from being pushed outward, respectively, on both sides of the trough formed by the first roller 100 and the second roller 100 being in close contact with each other. 32) is placed.

Preferably, the lower ends of the first and second hopper plates 31 and 32 are formed in a sharp shape so that the first roller 100 and the second roller 100 are in close contact with the valleys formed in close contact with each other.

In particular, the upper ends of the first and second hopper plates 31 and 32 are movably connected to the main gearbox 20 and the auxiliary gearbox 21 by a support plate 33, respectively, the support plate ( 33 is composed of a vertical plate 34 fastened to the upper end of each of the hopper plates 31 and 32 , and a horizontal plate 35 having a long hole 36 .

At this time, the position movement of the first and second hopper plates 31 and 32 is controlled according to the amount of the first tablet applied to the trough formed by the first roller 11 and the second roller 12 being in close contact with each other. This can be done.

To this end, in a state in which the horizontal plate 35 of the support plate 33 is in close contact with the main gearbox 20 and the auxiliary gearbox 21 , the fixing knob is passed through the long hole 36 formed in the horizontal plate 35 . After inserting the threaded part of (37), by rotating the fixing knob (37) so that the threaded part of the fixing knob (37) is fastened to the threaded hole formed on the main gearbox (20) and the auxiliary gearbox (21), the support plate (33) and the hopper plates 31 and 32 fastened thereto are in a state where the position is fixed.

On the other hand, after rotating the fixing knob 37 in the releasing direction, the support plate 33 and the hopper plates 31 and 32 coupled thereto are moved to a desired position along the left and right directions, and then the fixing knob 37 is again rotated. By rotating in the fastening direction to press the horizontal plate 35, the support plate 33 moved to a desired position and the hopper plates 31 and 32 coupled thereto are in a state in which they are fixed again.

On the other hand, the process of the refining coating passing between the first roller 100 and the second roller 100, and passing between the second roller 100 and the third roller 100, the front part (second If the process of being discharged through the roller 100 and the side that is not in close contact) is repeated, the tablet lacquer is made of nano-lacquer having smaller nanoparticles.

At this time, since the tablet coating and nano coating are in a state having a certain level of viscosity, after passing between the second roller 100 and the third roller 100, the front part of the third roller 100 (the second roller 100 and When the nano lacquer is discharged through the non-adherent side), it may not be smoothly discharged because it is pressed against the third roller 100 .

To this end, a scraper 40 is mounted on the front portion of the third roller 100 to scrape and easily discharge the nano-lacquer pressed to the surface of the third roller 100 .

Preferably, the scraper 40 is supported on a support 42 connected between the main gearbox 20 and the auxiliary gearbox 21 and is fixed through a bolt or the like, and the front end of the scraper 40 is a third roller ( 100) is in close contact with the surface of the front part.

Accordingly, when the nano lacquer is discharged through the front part (the side that is not in close contact with the second roller 100) of the third roller 100 after passing between the second roller 100 and the third roller 100, the third roller As the nano-lacquer adhered to 100 is scraped by the front end of the scraper 40 , the nano-lacquer can be easily separated from the third roller 100 , and the separated nano-lacquer is the rear end of the scraper 40 . It can be easily discharged along the wealth.

4 is an excerpted cross-sectional view of the roller 100 of FIG. 3 . The roller 100 is provided with an outer roller 110 and an inner roller 120 .

The outer roller 110 communicates left and right to form a hollow inside.

Since the inner roller 120 is formed with a hollow interior and the outer diameter is smaller than the inner diameter of the outer roller 110 and is built in, a flow path A through which the coolant flows between the inner peripheral surface of the outer roller 110 is provided. do. That is, since the inner circumferential surface of the outer roller 110 and the outer circumferential surface of the inner roller 120 are spaced apart by a predetermined interval, a flow path A through which the cooling water flows is formed.

And both ends of the inner roller 120 are closed by a disc-shaped finishing plate 130, which is formed with an appropriate diameter so as to be joined by welding to both inner diameters of the outer roller 110, the inner It is preferable to finish both ends of the roller 120 and the outer roller 110 at the same time.

In addition, the first shaft 150 and the second shaft 170 are fixed to both side finishing plates 130 and rotate integrally with the inner roller 120 and the outer roller 110 . Here, an inlet 151 is formed in the first shaft 150 to introduce cooling water supplied from the outside, and an outlet 171 is formed in the second shaft 170 to discharge cooling water from the second distribution pipe 180 . to the outside, these inlets 151 and outlets 171 are connected to a circulation tank (not shown).

In addition, a plurality of exhaust holes are radially formed in the finishing plate 130 to discharge air that may be generated during the processing of the inner roller 120 to the outside. And a plurality of support bars are provided inside the inner roller 120 to firmly support the inner circumferential surface of the inner roller 120 , and a plurality of connection holes are radially provided in this support bar to continuously communicate with the exhaust hole of the finishing plate 130 . is formed, and the air generated inside the inner roller 120 is exhausted to the outside through the connection hole and the exhaust hole.

A plurality of gap maintaining pieces 111 are interposed between the outer circumferential surface of the inner roller 120 and the inner circumferential surface of the outer roller 110 configured as described above to maintain the gap of the flow path A, and these gap maintaining pieces 111 are constant Since the length is formed radially along the axial direction of the inner and outer rollers 120 and 110 , the flow path A is firmly supported between the inner and outer rollers 120 and 110 . Optionally, it is preferable that the gap maintaining piece 111 is formed in a spiral shape to guide the spiral flow of the coolant introduced into the flow path A, thereby smoothly promoting the flow of the coolant.

The plurality of first distribution pipes 160 are radially connected to the inlet 151 of the first shaft 150 to branch the coolant flowing into the inlet 151 , and these first distribution pipes 160 are connected to the first It is connected to the inlet 151 so as to be divided at the same angle from the center of the shaft 150 to branch the coolant into several branches.

The first chamber 140 is formed in a ring shape along the periphery of the left end of the outer roller 110 so that a plurality of first distribution pipes 160 are connected, and accordingly, the coolant branched from the first distribution pipe 160 is The coolant is collected in the first chamber 140 , and the coolant collected in the first chamber 140 passes through a plurality of first acceleration holes 131 to be described later and is evenly distributed to the flow path A .

The plurality of first acceleration holes 131 are formed in the closing plate 130 to connect the first chamber 140 and the flow path A, and these first acceleration holes 131 are the edges of the closing plate 130 . The speed of the coolant collected in the first chamber 140 is increased by being inclined outwardly at regular intervals along the . That is, since the first acceleration hole 131 has a narrower cross-sectional area than that of the first chamber 140 , the speed of the coolant reaching the first acceleration hole 131 is rapidly increased, so that the coolant smooth the flow.

It is preferable that the first acceleration hole 131 has an inner diameter that is narrower than that of the first chamber 140, but optionally, the first acceleration hole 131 has a cross-sectional area of the inner diameter of the inner diameter sharply decreases and then in the central part. It becomes a minimum cross-sectional area and may be formed in a structure in which the cross-sectional area is gradually enlarged again.

As such, the cooling water flowing through the flow path A due to the increased flow rate in the first acceleration hole 131 is collected into the second chamber 142 of the finishing plate 130 provided on the right side of the outer roller 110. The second chamber 142 is formed in a ring shape along the periphery of the left end of the outer roller 110 , like the shape of the first chamber 140 , and collects the coolant flowing through the flow path A in one place.

Here, the second chamber 142 and the flow path A are connected to the second acceleration hole 135 to increase the flow rate of the discharged coolant.

The plurality of second acceleration holes 135 are formed in the finish plate 130, and are inclined inwardly at regular intervals along the edge of the finish plate 130 like the above-described first acceleration holes 131 to form a flow path. (A) and the second chamber 142 are connected. That is, the second acceleration hole 135 has a narrow cross-sectional area compared to the inner diameter of the flow path A, and increases the speed of the coolant reaching the second acceleration hole 135 to facilitate the flow of the coolant. Optionally, the second acceleration hole 135 may be formed in a structure in which the cross-sectional area of the inner diameter is rapidly reduced, becomes the minimum cross-sectional area in the central portion, and the cross-sectional area is gradually enlarged again.

The plurality of second distribution pipes 180 connecting the second chamber 142 and the outlet 171 of the second shaft 170 as described above radially connect the second chamber 142 and the outlet 171 to each other. The collected cooling water is discharged to the outside through the outlet 171 .

In the roller 100 of the present invention as described above, the coolant flowing in from the inlet 151 increases the flow velocity in the first acceleration hole 131 and the second acceleration hole 135 and flows smoothly through the flow path A without clogging. There is a very useful effect that can maximize the cooling action of the inner and outer rollers (120, 110).

In addition, in the present invention, since the cooling water flowing through the flow path (A) is guided in a spiral flow by the spirally wound gap maintaining piece 111, there is an effect that can promote a smooth flow of the cooling water.

5 is a schematic cross-sectional view showing the air circulation unit 400 covered with the nano lacquer manufacturing apparatus of FIG. 3, and FIGS. 6 and 7 are partial cross-sectional views of FIG. 5 .

The air circulation unit 400 is provided with a cover 240 to cover the base plate and a plurality of parts installed on the base plate. A blowing fan 250 is provided on one side of the upper portion of the cover 240, an air chamber 300 is provided on a lower portion of one side of the cover 240, and an exhaust port 200 is provided on the other upper portion of the cover 240. have.

An air passage is formed inside the cover 240 between the blower fan 250 and the air chamber 300 so that the air supplied from the blower fan 250 moves toward the air chamber 300 , and the air passage has an internal air passage. 220 and an external air passage 210 are formed. In addition, the opening and closing door 230 is coupled to the air passage by a hinge 232, and when the opening and closing door 230 is operated to form a vertical, the internal air passage 220 is opened and the external air passage 210 is closed, and the opening and closing door When the 230 is operated to be horizontal, the internal air passage 220 is closed, and the external air passage 210 is opened. The opening/closing door 230 may be provided to automatically open and close when a remote control or an opening/closing button is operated.

When the air circulation unit 400 naturally circulates around the nano lacquer manufacturing apparatus, the opening/closing door 230 rotates in the horizontal direction to close the internal air passage 220 and open the external air passage 210 . In this case, the outside air flows into the air chamber 300 through the external air passage 210 , and the outside air introduced into the air chamber 300 flows into the inside of the cover 240 and then is discharged through the exhaust port 200 .

When the air circulation unit 400 forcibly circulates around the nano lacquer manufacturing apparatus, the opening/closing door 230 is rotated in the vertical direction to open the internal air passage 220 and close the external air passage 210 . Then, by driving the blower fan 250 to allow outside air to flow into the air chamber 300 through the internal air passage 220 , the outside air introduced into the air chamber 300 is forcibly introduced into the inside of the cover 240 . It is discharged to the exhaust port 200 .

In the present invention, since the air circulation unit 400 is further provided, it is possible to optimize the air condition around the nano lacquer manufacturing apparatus by naturally circulating or forcibly circulating according to the air condition around the nano lacquer manufacturing apparatus.

On the other hand, inside the cover 240 of the air circulation unit 400, a sound absorbing layer may be provided. A needle punch nonwoven fabric may be used as the sound absorbing layer.

The type of fiber constituting the sound absorbing layer made of the needle punch nonwoven fabric is formed of polypropylene fibers.

It is preferable that the thickness of the said sound-absorbing layer is 0.5-18 mm. When the thickness of the sound-absorbing layer is less than 0.5 mm, sufficient sound-absorbing effect is not obtained, and when it exceeds 18 mm, the space inside the cover 240 is not sufficiently obtained, which is not preferable.

The unit weight of the sound-absorbing layer is preferably 15 ~ 900g / m ² It is. If it is less than 15g/m ² , sufficient sound absorption effect is not obtained, and if it exceeds 900 g/m ² , it is not preferable because the lightness of the cover 240 cannot be ensured.

The fineness of the fibers constituting the sound-absorbing layer is preferably in the range of 0.5 to 28 decitex. If it is less than 0.5 decitex, it is difficult to absorb low-frequency noise, and since cushioning property is also reduced, it is unpreferable. In addition, if it exceeds 28 decitex, it is not preferable because it is difficult to absorb high-frequency noise.

The tensile strength of the nonwoven fabric of the sound absorbing layer is formed as 9Kgf/cm 2 , and the noise reduction coefficient (NRC) is formed as 0,680.

Since the sound-absorbing layer is provided on the inside of the cover 240, it is possible to reduce the driving noise of the nano lacquer manufacturing apparatus.

The reason for limiting the constituent components such as nonwoven fabric, thickness, weight, and fineness constituting the sound-absorbing layer and limiting the numerical value of the composition ratio is that the present inventors repeatedly failed several times and analyzed through test results, as a result, the constituents and It showed the optimal sound absorption effect at the numerically limited ratio.

In addition, a vibration absorbing part made of a rubber material may be further installed on the bottom of the base plate of the lacquer manufacturing apparatus.

The vibration absorbing part may be made of a rubber material, and the raw material content ratio of this vibration absorbing part is rubber 55% by weight, 2-mercaptobenzothiazole 7% by weight, hexamethylenetetramine 6% by weight, carbon black 21% by weight, 3C (N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) 5% by weight and 6% by weight of precipitated sulfur are mixed.

Carbon black is added to increase or improve abrasion resistance, thermal conductivity, etc., and 2-mercaptobenzothiazole and hexamethylenetetramine are added to improve acceleration.

3C (N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) is added as an antioxidant, and precipitated sulfur is added to act as an accelerator.

Therefore, in the present invention, the elasticity, toughness and rigidity of the vibration absorbing part are increased, so that durability is improved, and thus the life of the vibration absorbing part is increased.

The tensile strength of the rubber material is 150Kg/cm2.

The reason for limiting the rubber material constituents and constituents and limiting the numerical value of the mixing ratio is that the present inventor repeatedly failed several times and analyzed the test results to find the optimal effect in the composition and numerical limit ratio. indicated.

Claims (5)

The process of preparing the wooden mold, pulling the leather to the wooden mold and fixing it, and then tying it with a rubber band and drying it in a shady place with ventilation for 20-30 days; When the backbone is produced, the outer surface of the leather fixed to the backbone is primed with a raw lacquer, dried and then polished to prime the skin and grind the unglazed surface; The chaebol undercoating and grinding process of chaebol undercoating and grinding of the chaebol undercoating with P320 sandpaper after drying the chaebol chilmyeon on the polished primed lacquer; Chochilmyeon with a particle size of 210-250nm mixed with selected lacquer liquid and turpentine in a weight ratio of 3:1 is applied to the polished chaebol chilmyeon, then dried in a chiljang, and then the chochilmyeon is ground with P600 sandpaper. process; A re-coating and re-coating process of using the lacquer solution on the polished lacquer surface as it is, repainting it once again, drying it, and polishing it with P600 sandpaper; When the re-painting is completed, the wood mold removal process of removing the leather fixed on the wood die and arranging and trimming the inside of the leather; An endothelial priming saengchil solution in which raw chil and pine essential oil are mixed in a weight ratio of 3:1 is applied to the endothelium, dried in a chiljang, and then the primed saengchil endothelium is polished with P320 sandpaper. Endothelial chaebol saengchil catfish and chaebol saengchil catfish and chaebol saengchil chaebol grinding process of performing the same process as the grinding process of chaebol saengchil catfish and chaebol saengchil catfish again; An endothelial lacquering and chochil-myeon grinding process in which raw lacquer and turpentine are mixed in a weight ratio of 4:1 on the endothelium, and after drying, the cho-chil-myeon is polished; The same process as the second coating of the endothelium and the second coating of the second layer is performed again, but the middle coating of the inner layer and the middle layer of grinding process of painting with a medium coating solution having a particle size of 160-200 nm; When the middle coating is completed, fresh lacquer and pine essential oil are mixed in a weight ratio of 4:1, and then topcoat with a topcoat solution with a particle size of 100-150nm that is aged for 1 day. turkey grinding process; Nano lacquer method for leather, comprising: a step of polishing and polishing a chaebol to apply a varnish to a cotton wool or cotton cloth and rub the painted surface to shine.
According to claim 1,
In the endothelial lacquering and lacquer grinding process, the lacquering of the lacquer surface is uniformly grinded with water sandpaper of P600-P1000.
According to claim 1,
The raw lacquer used in the priming and grinding of the raw lacquer for the skin further comprises 20 parts by weight of petroleum sulfonate and 25 parts by weight of zinc sulfate with respect to 100 parts by weight of the raw lacquer.
A product manufactured by the nano-lacquering method of leather according to any one of claims 1 to 3.
An apparatus for manufacturing a nano-lacquer used in the nano-lacquer method of leather according to claim 1,
The rollers 100 are arranged side by side on the same horizontal line, and are arranged to rotate in opposite directions while forming a nano-gap and being in close contact with each other;
a main gearbox 20 connected to one side of the roller 100 to transmit a rotational force to each roller 100 and at the same time control a gap between each roller 100;
an auxiliary gearbox 21 connected to the other side of the rollers 100 to adjust the gap between each roller 100;
it is disposed on the outer side of the main gear box 20 and includes a driving motor 10 for applying rotational power to the main gear box 20;
The process of passing between the first roller 100 and the second roller 100 and the process of passing between the second roller 100 and the third roller 100 and discharging through the front part of the third roller 100 By repeating, the lacquer is made of nano-lacquer with nanoparticles;
The roller 100 is
an inner roller 120 having a first shaft having an inlet and a second shaft having an outlet on both sides; an outer roller 110 that is hollow and rotates integrally with the inner roller 120 so that a flow path through which the cooling water flows is provided between the inner roller 120; a plurality of first distribution pipes (160) connected to radially branch the coolant introduced into the inlet (151) of the first shaft (150); a first chamber 140 provided along the circumference of one end of the outer roller 110 to evenly distribute the coolant branched from the first distribution pipe 160 to the flow path; a second chamber 142 provided at the other end of the outer roller 110 to collect the coolant distributed from the first chamber 140 and flowing through the flow path A; a second distribution pipe 180 connected to discharge the coolant collected in the second chamber 142 to the outlet 171 of the second shaft 170; A plurality of gap maintaining pieces 111 are interposed between the outer circumferential surface of the inner roller 120 and the inner circumferential surface of the outer roller 110 to maintain the gap of the flow path A, and the gap maintaining piece 111 is the flow path ( It is formed while spirally wound to guide the spiral flow of the coolant introduced into A); The first chamber 140 and the flow path A are connected by a plurality of first acceleration holes 131 disposed along the circumference to increase the flow rate of the coolant; The first acceleration hole 131 is formed in the finishing plate 130 for closing both sides of the inner roller 120; The flow path A and the second chamber 142 are connected by a plurality of second acceleration holes 135 disposed along the circumference, thereby increasing the flow rate of the coolant; The second acceleration hole 135 is formed in the finish plate 130 for closing both sides of the inner roller 120; the second distribution pipe 180 is formed in plurality so as to be radially connected to the second chamber 142 and the outlet 171;
A leather nano lacquer manufacturing apparatus, characterized in that the air circulation unit 400 is further coupled to the circumference of the manufacturing apparatus made of a plurality of parts to forcibly circulate internal and external air or to circulate naturally.

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