KR20140086642A

KR20140086642A - Printing method for leather and printed leather using the same

Info

Publication number: KR20140086642A
Application number: KR1020120157369A
Authority: KR
Inventors: 박기철
Original assignee: 주식회사 하나텍
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2014-07-08

Abstract

The present invention relates to a method of printing patterns on leather fabrics and to leather fabrics printed thereon. A method of printing patterns on a leather fabric according to the present invention and a leather fabric printed by the method are coated on an object to be printed without applying a coating treatment to the object to be printed at a low temperature (120 to 140 ° C) As a method of transferring a photograph, there is no discoloration or discoloration at all, and deformation and alteration of natural leather can be minimized, and strong discoloration and discoloration due to ultraviolet rays or heat from the outside can be prevented.

Description

The present invention relates to a method for printing a pattern on a leather fabric,

The present invention relates to a method of printing patterns on leather fabrics and to leather fabrics printed thereon.

Leather is widely used because of its various uses. However, such a leather product has a disadvantage in that the pattern can not be varied because the color is applied by a method of dyeing the leather fabric.

In order to overcome such disadvantages, a method of printing a pattern on a leather fabric itself has recently been proposed. In Korean Patent Laid-Open Publication No. 10-1999-0045903, a composition ink using a polyurethane resin, a hardener, A method of screen printing on the surface of a substrate is described. However, such a printing method has advantages of being prominent in gloss and dimensional sensation, but since a polyurethane resin is used as a binder, there is a problem that leather is stretched and deformed in a process of being cured at a high temperature in a printing process. Therefore, . In addition, although the curing at room temperature is possible by the use of the curing agent, there is a problem that the productivity is deteriorated due to the problem that it is required to be dried for a long time.

Korean Patent Laid-Open Publication No. 10-2000-0024411 provides a method of printing a leather using a method of applying a paint to the surface of a rubber plate and a leather, then covering the transfer paper and heating and pressing the paper with a heating press. However, in such a case, when the pattern of the transfer paper is thermally transferred by heating and pressing by the heating press, the transfer paper is pressed against the rubber plate or the leather surface due to heat so that the transfer paper does not fall off. Even if the pattern is thermally transferred to the leather surface, .

Korean Patent Registration No. 10-221666 also provides a method of printing on leather by a method of dye penetration into leather so as to have a saturation of 2 to 5 degrees. This is accomplished by preparing a first semi-finished product having an aqueous dye layer, then using a urethane adhesive, drying the second semi-finished product using a water-based brightener, and then ironing using a hot- And then the dye is printed on the surface of the leather with a roller press to print an arbitrary speckle pattern. However, this has the disadvantage that the manufacturing process is too complicated. Particularly, a roller printing machine is used in the process of applying a dye, and only a desired pattern is to be engraved on the surface of the roller, so that a product can not produce various patterns. In order to produce a pattern other than a pattern engraved on a roller A separate pattern must be used on the surface of the roller again so that it is not only costly to manufacture but also difficult to cope with the desire of the purchaser.

In addition, in the case of the above-described techniques, there is a problem that the heat transferred pattern gradually fades away due to ultraviolet rays as time goes by. Accordingly, there is a need for developing a method of transferring a pattern to a leather fabric, which can be retained in a pattern for the first time even after a long period of time.

Accordingly, the present inventors have found that, when an intermediate intermediate layer is coated on an object and the pattern is printed on a leather fabric in a low-temperature manner by focusing on the output coating rather than the object coating instead of the high-temperature sublimation transfer method, And discoloration and discoloration do not occur, and the texture of the natural leather is maintained. Thus, the present invention has been completed.

It is an object of the present invention to provide a method of printing a pattern so that the pattern can be retained over time on the leather fabric, and to provide a leather fabric printed thereon.

The present invention provides a method of printing patterns on a leather fabric and a printed leather fabric thereby.

A method of printing patterns on a leather fabric according to the present invention and a leather fabric printed by the method are coated on an object to be printed without applying a coating treatment to the object to be printed at a low temperature (120 to 140 ° C) As a method of transferring a photograph, there is no discoloration or discoloration at all, and deformation and alteration of natural leather can be minimized, and discoloration or discoloration due to ultraviolet rays or heat from the outside can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic representation of a method for printing patterns on a leather fabric according to the present invention.

The present invention relates to a method of printing a pattern on a leather fabric,

(D-Ethylene Glycol), GL (Glycerin), BC (Butyl Carbitol), T-20 (Dispersants-20), FW-50 (Formula weight-50), EAY (Pentahydrate) (Para-400) and Rajin 180. The step of printing a pattern to be printed with a leather printing ink includes:

(b) applying an intermediate coating solution containing cellulose, an organic solvent, ananine and chloroprene rubber to the output output in the step (a); And

(c) pressing the output coated with the intermediate coating solution on the natural leather using a press machine in the step (b); The method comprising the steps of:

The present invention also provides a leather fabric printed with patterns by the printing method.

Hereinafter, the present invention will be described in detail.

In the method of printing a pattern on a leather fabric of the present invention, the step (a) is a step of outputting a pattern to be printed on a leather fabric with a pigment-based leather printing ink.

The leather printing ink uses a pigment-based sublimation transfer ink for leather which is not a conventional dye-sublimation transfer ink.

Preferably, the leather printing ink contains color materials such as DEG, GL, BC, T-20, FW-50, EAY, P-400 and Rajin 180, 15 to 20% by weight of glycerin, 1 to 3% by weight of GL (glycerin), 1.5 to 2.5% by weight of BC (butylcarbitol), 0.3 to 0.7% by weight of T-20 (Dispersants- More preferably 30 to 50% by weight of EAY (Phenol), 0.3 to 0.7% by weight of EAY (Pentahydrate), 5 to 15% by weight of P-400 and 200 to 15% by weight of Ranjin- .

The step (b) is a step of applying the intermediate coating solution to the output product of the step (a), and the intermediate coating solution of the present invention is applied to the output By applying it directly, it is possible to minimize the sublimation and disappearance, to maintain natural inherent color, and to maintain the natural leather texture.

The intermediate coating solution preferably contains cellulose, an organic solvent, ananine, and chloroprene rubber. The organic solvent is preferably butyl acetate and acetone. The organic solvent is preferably 25-35 wt% based on the total weight of the intermediate coating solution, By weight to 40% by weight, an agonist by 10% by weight to 20% by weight, and chloroprene rubber by 15% by weight to 25% by weight.

The dye ink responds to ultraviolet rays because the molecular structure of the dye is not constant, so that when the dye receives heat, the molecular structure becomes stronger in moving activity, so that the dye has a structure that diffuses fine cracks. However, the intermediate coating liquid prevents discoloration or discoloration by suppressing such activity.

In the step (c), the output coated with the intermediate coating solution in the step (b) is pressed onto natural leather using a press machine.

In the present invention, it is preferable that the pressing is performed at 110 to 150 ° C. for 600 to 800 kg for 15 to 19 seconds. The step (c) of the present invention can prevent the deformation of the natural leather by performing the compression for a short time under the condition of low heat and low pressure as compared with the conventional method.

After step (c), step (d) may further include removing steam remaining after the pressing in step (c).

In the step (d), when the transfer paper remaining after the pressing (printing) is removed, the leather is peeled off using steam, thereby helping the moisture retained in the leather to be retained again, thereby maintaining the essence of the natural leather.

The leather fabric printed by the above-described method is stable in output, does not cause discoloration or discoloration, minimizes deformation or degeneration of natural leather, and does not cause discoloration or discoloration due to ultraviolet rays or heat from the outside .

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

< Example 1 > Manufacture of printed leather fabrics using pattern printing on leather fabrics

20 wt% of color raw material, 17 wt% of DEG (Diethylene Glycol), 3 wt% of GL (glycerin), 2 wt% of BC (butylcarbitol), 0.5 wt% of T-20 (Dispersants- 40% by weight of Formula weight-50, 0.5% by weight of EAY (Pentahydrate), 10% by weight of P-400 (Para-400) and 7% by weight of Ranjin 180 were mixed to prepare a leather printing ink. Using the manufactured leather printing ink, a pattern to be output was outputted as an output.

Thereafter, an intermediate coating solution to be applied to the printed product was prepared by mixing 30 wt% of cellulose, 25 wt% of butyl acetate, 10 wt% of acetone, 15 wt% of cyclohexanone and 20 wt% of chloroprene rubber with respect to the total weight of the intermediate coating solution, .

The output coated with the intermediate coating solution was pressed on an untreated leather fabric using a press at 130 DEG C under a pressure of 700 kg for 17 seconds to produce a patterned leather fabric.

Claims

A method of printing a pattern on a leather fabric,
(D-Ethylene Glycol), GL (Glycerin), BC (Butyl Carbitol), T-20 (Dispersants-20), FW-50 (Formula weight-50), EAY (Pentahydrate) (Para-400) and Rajin 180. The step of printing a pattern to be printed with a leather printing ink includes:
(b) applying an intermediate coating solution containing cellulose, an organic solvent, ananine and chloroprene rubber to the output output in the step (a); And
(c) pressing the output coated with the intermediate coating solution on the natural leather using a press machine in the step (b); Wherein the pattern is printed on a leather fabric.

The ink for leather printing according to claim 1, wherein the leather printing ink comprises 9 to 30% by weight of color materials, 15 to 20% by weight of DEG (Di Ethylene Glycol), 1 to 3% by weight of GL (Glycerin) 1.5 to 2.5% by weight of BC (butylcarbitol), 0.3 to 0.7% by weight of T-20, 30 to 50% by weight of FW-50 (Formula weight-50), 0.3 to 0.7% by weight of EAY (Pentahydrate) (Para-400) of 5 to 15% by weight and Ranjin-180 of 2 to 15% by weight.

The method according to claim 1, wherein the organic solvent in step (b) is butyl acetate and acetone.

The method according to claim 1, wherein the intermediate coating solution in step (b) comprises 25 to 35% by weight of cellulose, 30 to 40% by weight of organic solvent, 10 to 20% by weight of an organic solvent and 15 to 25% by weight of chloroprene rubber, Wherein the pattern is printed on a leather fabric.

The method according to claim 1, wherein the pressing in step (c) is performed at a temperature of 110 to 150 ° C for 600 to 800 kg for 15 to 19 seconds.

The method of claim 1, further comprising: after step (c); (d) removing steam remaining after pressing in step (c); &Lt; / RTI > The method of claim 1, further comprising printing a pattern on the leather fabric.

A patterned leather fabric produced by the method of any one of claims 1 to 6.