KR101756877B1 - A method of processing a feeling of washing on leather fabrics and leather fabrics manufactured thereby - Google Patents

Abstract

Forming a silver surface smoothly on the hairy portion of the leather so as to have a washout with pure water and a dye thickener without using a pigment or a pigment by a minimum process time; A primary drum milling step after the silver surface formation; The first toggle stage; A buffering step; Steps of ironing of primary and secondary; A plurality of roll-tapping steps; A secondary drum milling step; Spraying through the primary and secondary sprays; A third drum milling step; And a second toggle buckling step, wherein the leather fabric is provided with a method of processing the washington and a leather fabric produced thereby.
Accordingly, it can have a texture like a cloth, and can be used comfortably without causing skin troubles even when wearing a product.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of processing a leather in a leather fabric and a leather fabric produced by the method,

The present invention relates to a method of processing a leather fabric so as to have a washtone, and more particularly, to a method of manufacturing a leather which is capable of having a washton with pure water and a dye thickener without using a pigment or a pigment A method of processing a washington on a fabric, and a leather fabric produced thereby.

Generally, leather is one of the fabrics used for jackets, underwear, etc., furniture such as sofas, beds, carpets, as well as accessories such as wallets, hats and shoes.

Leather is largely made of natural leather and artificial leather. Artificial leather is more affordable and easier to handle than natural leather, so its use is gradually expanding.

Leather fabrics are designed to be more natural in nature, or to meet the needs of a wide range of consumers, it is important to have a cloth-like feel and flexibility.

Conventional prior arts for processing leather fabrics include those which are made of sheepskin as apparent in the Korean Utility Model Registration No. 20-0363492 (hereinafter referred to as "Prior Art Document 1"), , A jeans fabric capable of manufacturing high-quality jeans excellent in warmth and stretchability, satisfying the taste of a consumer who seeks new fashion by being able to wear more than conventional jeans and having various designs, has been proposed.

In addition, as disclosed in Korean Patent Registration No. 10-1188359 (hereinafter referred to as "Prior Art Document 2"), a pattern printed on a film is printed by applying heat and pressure to the film, A technique such as a method of printing a pattern on a leather or a textile fabric capable of solving the problems of remaining adhesive or the like when the film is dropped when the film is adhered to the fabric of the film and the cost problem due to the adhesion process of the film can be solved There is a bar.

In addition, as disclosed in Korean Patent No. 10-1262830 (hereinafter referred to as "Prior Art Document 3"), it is possible to form a wrinkle on a leather fabric which can conveniently form a wrinkle of a desired shape without using a complicated machine Techniques such as the method and the leather fabric produced thereby have also been proposed.

Korean Utility Model Registration No. 20-0363492 Korean Patent Publication No. 10-1188359 Korean Patent No. 10-1262830

However, the prior art document 1 has a disadvantage in that the processing process is considerably cumbersome and inconvenient, and the dyeing process for applying color is repeated, thereby causing skin troubles to wearers with weak skin due to dyeing.

Prior Art Document 2 In addition, it has a disadvantage in that it can be easily deformed even in a small error when thermocompression, as well as being inconvenient and inconvenient in processing.

The prior art document 3 has a disadvantage of providing only a simple design.

The main object of the present invention to overcome the above-mentioned problems of the prior art is to provide a leather fabric which is capable of having a washout with pure water and a dye thickener without using a pigment or pigment in a minimum process time, And a leather fabric produced by the method.

Another object of the present invention is to enable the leather fabric to have a more soft and cloth-like flexibility.

Yet another object of the present invention is to make it possible to control the concentration of the washington easily.

According to an aspect of the present invention, there is provided a method of manufacturing a leather, comprising: forming a silver surface on a hairy portion of a leather; A primary drum milling step to impart flexibility to the leather after the silver surface formation; A primary toggle step for spreading the leather to the original surface after the drum milling; A buffing step of machining by a polishing paper in a silver surface after the toggle visor; An ironing step of first and second pressing by heat to maintain a uniform thickness and smoothness of the leather after the buffing; Roll-tipping at least one or more times to color the silver surface after the ironing; A second drum milling step to impart softness to the leather after the roll tipping; Spraying the primary drum and the secondary drum in order to have a water-repellent effect while preventing wash-out of the dye while the secondary drum is milled; A third drum milling step to provide flexibility to the leather after auto spraying; And a secondary toggle step for spreading the surface of the leather after the third drum milling.

The primary drum milling step is 7 to 12 hours, the temperature is 40 to 45 DEG C, the drum rotation number is 16 to 17 rpm, and the humidity is 25 to 35%, depending on the thickness of the leather.

The abrasive used for the buffing is 240 to 280 times.

The iron phase is pressurized to a secondary pressure of 50 bar at a primary pressure of 30 bar at a temperature of 120 < 0 > C.

The plurality of roll tipping steps may be performed by a first roll tipping step by a printing roller having a pattern or a shape formed by a first light color dye solution, a second roll tipping step by a printing roller in which a pattern or a shape is formed into a darker color dye than a second- A third roll-tipping step, and a third roll-tipping by a printing roller having a pattern or shape formed of dyes of a darker color than the tertiary second.

The dye solution is water 800, a dye 100-200, and an emulsifying thickener 20 parts.

And between each roll tipping of the first to third rolls in the roll tipping step, the surface having a non-uniform thickness is further rubbed to have flatness.

The secondary drum milling step is 7 hours, the temperature is 40 to 45 DEG C, the drum rotation number is 16 to 17 rpm, and the humidity is 25 to 35%.

The autospray step includes a spray micro-binder 200 wax 200 for preventing the dyes from being sprayed, a first auto spray step with 600 parts of water, a second auto spray step of spraying a water repellent agent to have a water- .

The third drum milling step is 3 hours, the temperature is 40 to 45 DEG C, the drum rotation number is 16 to 17 rpm, and the humidity is 25 to 35%.

The present invention can provide a cloth-like texture by using only pure water and a dye thickener without using a coloring matter or a pigment by a minimum process time, thereby causing a cloth-like texture and causing skin troubles even when the product is worn So that it can be used comfortably.

In addition, by allowing the leather fabric to have a more soft and cloth-like flexibility, it is also possible to prevent the stiffness felt in conventional leather when worn.

In addition, by adjusting the concentration of the washtone to be easily made, it is possible to provide a wider variety of products.

1 is a block diagram for explaining a processing step of the present invention;
2 is a partially enlarged photograph of a leather fabric processed by the processing method of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The present invention is not limited to the embodiments.

Fig. 1 is a block diagram for explaining a processing step of the present invention, and Fig. 2 is a partially enlarged photograph of a leather fabric processed by the processing method of the present invention.

As shown, a leather fabric such as natural leather or artificial leather is processed to provide a cloth-like feeling and flexibility.

The present invention is to enable leather fabrics to have a washout with pure water and dye thickener without the use of pigments or pigments for a minimum of processing time.

In the method of working a leather fabric according to the present invention, first, a step S1 of forming a silver surface smoothly on the hairy surface of the leather outer surface is performed.

That is, the hairs on the outer surface of the leather are completely removed from the hairs by a known depilator or depilator to form a smooth silver surface.

In other words, the leather before forming the silver surface is contained in a fleece and fleece that removes the fat layer in the backside layer of the raw hide, which is well known to those skilled in the art of leather making in the known manner A soaking process is performed in which impurities, bacteria, salts and the like are removed and converted to a bare skin condition.

A liming process of removing the hair roots after the soaking process and spreading the wrinkles of the leather and dividing the leather according to the purpose of use; Followed by a deliming process to remove the lime components after removing the root roots and the dirt.

In addition, a tanning process for performing tanning by using a tanning agent such as a chromium compound in order to impart flexibility and heat resistance to the leather after completion of the demineralization process, and a step of passing the leather after the tanning process through the rollers, After the step of removing moisture, remaining hairs remaining on the outer surface of the leather are removed to form a smooth silver surface.

After the silver surface is formed, a conventional primary drum milling step (S2) is carried out so as to impart flexibility to the leather. At this time, the primary drum milling step may be a method of passing between a pair of drums provided in a conventional chamber, or a method of pressing the drum with a single drum so as to have flexibility, 12 hours, temperature 40 ~ 45 ℃, drum rpm 16 ~ 17 rpm and humidity 25 ~ 35%.

The reason for milling time between 7 and 12 hours is determined by the difference in thickness and strength of the leather. In other words, strong leather does not soften for less than 7 hours. In addition, the leather is too soft when it is more than 12 hours, which is not suitable for processing.

When the drum rotation speed is set to 16 to 17 rpm, when the drum speed is less than 16 rpm, the drum does not receive sufficient action to produce the desired quality of leather. If the leather is in the drum, it must fall off a certain height to get the action. If it is slow, it will fall off the low height and the action is less. Also, even at 17 rpm or more, the leather will not gather enough action in the drum. It is attached to the bottom of the drum by the centrifugal force and the leather is not dropped, and the action is reduced. Accordingly, the ideal number of revolutions is preferably 16 to 17 rpm.

When the humidity is 25% to 35%, when it is less than 25%, the pattern of the dongle dongle which occurs on the leather surface is caught too much, causing problems in the appearance of the product. If it is more than 35%, the above range will be appropriate because the pattern of the dongle dongle on the leather surface is caught too much and the shape of the product is problematic and it is not natural.

Then, after the drum milling, a normal primary toggle step S3 for uniformly spreading the surface of the leather to the original state is performed. That is to say, the toggle cuff pulls the loosened leather and stretches it evenly so that it does not climb.

Thereafter, the buffing step (S4) is performed by machining such as a conventional buffing machine by a polishing paper such as ordinary sandpaper or the like with a silver surface after the toggle stick. At this time, it is preferable to use sandpaper 240-280 for the abrasive paper used for the buffing. When the number of the sandpaper is 240 or less, it takes a long time to process the surface to be too smooth, and when the number of the sandpaper is 280 or more, the work is too rough.

Accordingly, it is preferable to use the sandpaper within the above-mentioned range. This is a work for smoothing the silver surface and smoothly impregnating the dye of the required color.

After the buffing, a step S5 is performed to pressurize the leather primarily and secondarily by keeping the uniform thickness and smoothness of the leather. At this time, the iron phase is pressurized to a secondary pressure of 50 bar at a primary pressure of 30 bar at a temperature of 120 ° C.

As a result of the above-mentioned ironing test several times, the above conditions were not satisfied because the silver surface was rough in performing the roll-tipping process. On the other hand, when the above conditions are exceeded, the leather is deformed due to the temperature and the pressure, so that the condition is not suitable.

That is, this long step is performed by passing through a normal heating roller or by pressing.

So that the thickness of the leather can be made to have a comparatively uniform thickness and to have a smooth and smooth smoothness.

In addition, a step (S6) of performing roll-tipping at least once a plurality of times in order to color the silver surface after the ironing is performed.

The roll tipping step S6 is performed by a primary roll tipping step (S6a) by a conventional printing roller having a pattern or shape formed by a dye solution of a primary color of a desired color, a dye of a darker color than a secondary primary A second roll tipping step (S6b) by a normal printing roller having a pattern or a shape formed thereon, and a third roll tipping step (S6b) by a normal printing roller in which a pattern or shape is formed with a darker color dye than a tertiary second S6c. At this time, the dye solution is water 800, dye 100-200, and emulsion thickener 20 parts.

In other words, it was the most suitable value when working with the numerical values through several machining operations. Here, part means 1 g per 1 kg. In the case of water and dye, the color is determined. In the case of the concentration of the emulsifying thickener, when the viscosity is lower than the above-mentioned standard, the viscosity becomes thinner and a problem arises in the case of roll-tipping. On the other hand, in the case of the above-mentioned reference value, the viscosity is too high, and the problem that the chemicals do not aggregate uniformly occurs.

Further, between the roll tipping of the first to third rolls in the roll-tipping step, each of the flatness-type pads further includes a flatness step (S61) so as to have a flat surface with a non-uniform thickness.

As shown in FIG. 2, a pattern or shape of a washington is formed in the roll tipping step, and various patterns or shapes can be formed due to repeated repetition. It can also be adjusted to darker and darker depending on the dye concentration.

This is one of the important processes to determine the actual washington.

After the roll tipping, a secondary drum milling step (S7) is performed so as to have soft texture, i.e., flexibility, on the leather. This proceeds in the same manner as the first drum milling step. At this time, the secondary drum milling step is less than the time of the first drum milling step, that is, 7 hours, the temperature is 40 to 45 ° C, the drum rotation number is 16 to 17 rpm, and the humidity is 25 to 35%.

Among the above conditions, the temperature, the drum rotation speed and the humidity are as described above, and the time is secondary drum milling. When the time is 7 hours or less, the silver surface after the tipping does not feel like cloth, The silver halide state is excessively inflated and the feeling of being washed is less so that the above conditions will be appropriate.

After the secondary drum milling, a normal auto spraying step (S8) is carried out through the primary and secondary to have a water repellent effect while preventing the dye from being deposited while having a wash tone.

The auto-spraying step S8 includes a conventional spray micro-binder 200 wax 200 for preventing the coloring of the colored dyes in the roll-tipping step, a first auto spray step S8a with 600 parts of water, And a second auto spray step (S8b) in which the water repellent agent is sprayed in a conventional manner so as to have a water repellent function.

The primary auto spray is intended to have the effect of keeping the effect of burying and soft touch. When the microbinder is less than 200, it becomes buried. When the microbinder is more than 200, the binder causes the leather to feel strong. Also, if the wax is less than 200, the leather becomes stronger. If it is more than 200, it becomes too soft and not suitable. In addition, the secondary auto spray has a water repellent effect. When the water repellency is less than the above value, the water repellent effect is less, and the water repellent effect becomes rough.

Accordingly, it is possible to prevent the dyed pigment from being processed and to prevent the dyed product from being produced after the production of the product, and also to have a water-repellent function for discharging the moisture inside from the outside, thereby enabling the wearer of the product to maintain a comfortable state at all times .

After the auto spraying, the third drum milling step (S9) is performed so as to have flexibility again so as to have a soft feeling like cloth on the leather. At this time, the third drum milling step is 3 hours shorter than the second drum milling time, the temperature is 40 to 45 ° C, the drum rotation number is 16 to 17 rpm, and the humidity is 25 to 35%.

Among the above conditions, the temperature, the drum rotation speed and the humidity are as described above. When the time is less than 3 hours, the rough surface is not smooth and the natural taste is poor. Since the surface is dirty due to excessive milling time when it is longer than 3 hours, .

In other words, the third drum milling is a process in which the overall texture of the leather is soft and has a texture like cloth, and finally has a cloth-like texture in the state of passing through primary and secondary. This is done in the same manner as the first order described above.

Finally, a second toggle step S10 for evenly spreading the surface of the leather after the third drum milling. This is also done in the same way as the first toggle step.

In other words, the second toggle is intended to finalize the product, so as to keep the flattened part by pulling it without stretching.

Thus, when the second toggle stage is completed, the product is completed, which is wound around a bobbin or a roll by a known method and supplied to a necessary place so that it can be manufactured into various products required.

Accordingly, the present invention provides leather fabrics 1 that can have a washout in pure leather and dye thickener without the use of pigments or pigments for a minimum amount of time in the processing of leather, Of course, have the same texture and feel as cloth.

1: Leather Fabric

Claims (11)

Forming a silver surface smoothly on the hairy portion of the leather;
A primary drum milling step to impart flexibility to the leather after the silver surface formation;
A primary toggle step for straightening the leather to the original state after the primary drum milling;
A buffing step of machining by a polishing paper in a silver surface after the toggle visor;
An ironing step of firstly and secondarily pressing by heat to maintain a uniform thickness and smoothness of the leather after the buffing;
Roll-tapping to color the silver surface after the ironing;
A second drum milling step to impart softness to the leather after the roll tipping;
Spraying the primary drum and the secondary drum in order to obtain a water repellent effect while preventing the dye from being deposited while having a wash tone after the secondary drum milling;
A third drum milling step to provide flexibility to the leather after auto spraying; And
And a second toggle bucket step for spreading the surface of the leather after the third drum milling, the method comprising the steps of:
The roll tipping may be performed by a primary roll tipping step by a printing roller having a pattern or a shape formed by a dye solution of a primary light color, a secondary roll by a printing roller having a pattern or shape formed with a darker color dye than a secondary primary, A tipping step and a third roll tipping by a printing roller having a pattern or shape formed with a dye of a darker color than a tertiary secondary,
The dye solution is composed of water 800, a dye 100 to 200, and an emulsifying thickener 20 parts,
Wherein each of the first to third roll tipping in the roll tipping step further includes a respective flattening step so as to have a flat surface by rubbing a surface having a non-uniform thickness with the pad. The method according to claim 1,
The primary drum milling step may be performed for 7 to 12 hours, at a temperature of 40 to 45 DEG C, at a drum rotation rate of 16 to 17 rpm, and at a humidity of 25 to 35%
The secondary drum milling step is performed for 7 hours, at a temperature of 40 to 45 DEG C, at a drum rotation number of 16 to 17 rpm, and at a humidity of 25 to 35%
Wherein the third drum milling step is performed for 3 hours, at a temperature of 40 to 45 DEG C, at a drum revolution of 16 to 17 rpm, and at a humidity of 25 to 35%. The method according to claim 1,
Wherein the abrasive cloth used in the buffing is 240 to 280 times. The method according to claim 1,
Wherein the ironing step presses the washington into a leather fabric pressurized to a secondary pressure of 50 bar at a primary pressure of 30 bar at a temperature of 120 ° C. delete delete delete delete The method according to claim 1,
The autospray step includes a spray micro-binder 200 wax 200 for preventing the dyes from being sprayed, a first auto spray step with 600 parts of water, a second auto spray step of spraying a water repellent agent so as to have a water repellent effect after the first auto spray step A method of processing a washington in a leather fabric. delete A leather fabric processed by the method of any one of claims 1 to 4 and 9.

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