KR20160149501A - method of printing and apparatus suited for the same - Google Patents

Abstract

Characterized in that all the printing dyes suitable for two or more materials contained in the target fabric are all prepared in the printer for digital textile and the printing is performed by spraying the printing dyes on the respective printing target points and a printing method in which the target fabric is conveyed in the opened state A dye transfer means for transferring the dye, a transfer means for transferring the dye, a dye transfer means for transferring the dye transfer means, a dye transfer means for transferring the dye transfer material, And a controller for causing the nozzle to position the nozzle at a required position in consideration of the position of the target material and for allowing the nozzle to jet the dye. The dye-jetting means includes a plurality of dyes and dye-specific nozzles A printing apparatus characterized by:
According to the present invention, the fabric including two or more materials can be printed by the digital textile printing method, and the quality of the printing can be uniformly maintained in the printing operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a printing method,

The present invention relates to a printing method and printing apparatus using a digital textile printing (DTP) method, and more particularly, to a printing method using a digital textile printing method for a fabric having a plurality of different materials, that is, To a printing apparatus.

Printing means partial dyeing on the fabric, which is a concept corresponding to the dyeing which causes dyeing as a whole. Traditional printing methods include silk-screen printing, roller printing, and warrior printing. Recently, with the development of electronic printer technology, digital deck-style printing methods such as printing on a fabric or a garment itself, .

In such a digital deck style printing, the fabric and the nozzle are moved relative to each other as if printing on paper, and the dye is sprayed on the necessary portion of the fabric to dye the portion. Printing As with monochrome printing and color printing, monochromatic or multicolored printing can be performed on the fabric.

In order to relatively move the fabric relative to the nozzle, for example, the fabric can be moved in one direction, the nozzle can be moved in a direction perpendicular to the direction, and the dye is jetted at a predetermined coordinate or position, The desired printing can be done for all areas of the fabric.

For example, if nozzles for three primary colors of black, red, yellow and blue are provided, if the resolution of the printing point is sufficient, black and white printed dots The combination allows printing in virtually any color.

However, in the digital deck style printing, since the printing object is not a substantially homogeneous object of paper, but a fabric which can be made into various kinds of yarns of different materials, the kind of dyes also needs to be changed depending on the material of the fabric. To print fabrics of different materials with a single printing device, it is necessary to clean the dye container and its associated nozzles and to print different fabric fabrics while feeding with different dyes.

However, in the case of a composite material in which the fabric to be printed includes two or more different kinds of yarns, for example, in the case of a mixed yarn or two or more yarns which are woven by mixing two or more heterogeneous fibers, There is a problem that it is difficult to dye all of these yarns with the same kind of dye. For example, natural fibers such as cotton, silk, wool, and rayon are mainly dyed in response to reactive dyes, and chemical fiber yarns such as polyester and nylon are dyed in response to disperse dyes, , Nylon, etc., are dyed in response to acid dyes, so it is generally difficult to dye polyester yarn together with cotton dyes.

In order to solve the problem of printing in the case of a composite material in which the fabric to be printed includes two or more different kinds of yarns, a method of dyeing the fabric by mixing the dyes for the cotton and the polyester fibers may be considered . However, in most cases, it is difficult to mix these dyes because of the nature of the dyes themselves, and even if they can be mixed, it is difficult to dye them sufficiently for coloring or to dye the same in different yarns, There is a falling problem.

Therefore, in the case of a composite material, printing using a conventional printing method such as a silk screen is performed, but printing of the DTP method is not realized in reality.

Korean Patent No. 10-0144743: Recording apparatus and recording method

It is an object of the present invention to provide a printing method capable of printing a fabric including two or more materials using a digital textile printing method and uniformly maintaining the quality of printing, and an apparatus suitable for the printing method.

The present invention relates to a method for printing a fabric comprising two or more materials by printing with a printer using a printing dye suitable for each material when printing is performed by a digital textile printing method, It is an object of the present invention to provide a printing method and a printing apparatus capable of printing.

In order to achieve the above object,

Characterized in that all of the printing dyes suitable for two or more materials contained in the target fabric are all prepared in the printer for digital textile and are respectively sprayed to the printing target points to perform printing.

In the printing method of the present invention, when the printing nozzles are moved to the printing dye for each material, printing nozzles can be positioned once at the same point on the fabric.

In the present invention, when the degree of mixing of two or more materials on the target fabric is dense and homogeneous, two or more materials are placed together at substantially the same target point. In this case, So that the printing is performed.

In this way, when the dye-jetting means, for example, a dye head having nozzles for jetting the dye-containing container and the dye-containing dye, respectively, ejects dyes for two materials onto one portion of the fabric, And to spray the dye for another material after a certain period of time.

In the present invention, when the dye is sprayed on one side of the fabric, vacuum is applied to the other side to apply a pressure difference through the fabric, and the dye injected on the fabric is rapidly transferred So that it can quickly spread out of the fabric during the process. At this time, when the sprayed dye collides with the fabric and a part of the scattered particulate is scattered in the periphery, it is also possible to prevent the scattered particulates from being caught by vacuum suction or sticking to the fabric again to pollute the surrounding environment.

In the present invention, at least one of the fabric transfer path and the dye injection means can be heated to the fabric. For example, when a dye is sprayed from a nozzle, heating can be performed around the nozzle to quickly remove moisture or other solvent components from the dye sprayed onto the fabric.

According to an aspect of the present invention,

A dye transfer means for transferring the target fabric in a unfolded state, a dye injection means having a nozzle and a dye for injecting dye into the fabric during the transfer process, a dye transfer means for controlling the movement of the dye injection means, And a controller for using the coloring material and positioning the nozzle at a necessary position in consideration of the feeding speed and the position of the target fabric, and causing the nozzle to jet the dye,

Wherein the dye spraying means comprises a plurality of dyes and dye-specific nozzles for dyeing two or more dyes, and the controller is configured to spray the dyes by the respective nozzles to the corresponding points while the dyes are being transported do.

The dye-jetting means in the printing apparatus of the present invention comprises a plurality of dyes and an injection nozzle, and the positions of the injection nozzles associated with the dyes are spaced apart from each other so that even when the dye is injected to the same point of the fabric, To be sprayed.

In the present invention, it is possible to further include a vacuum applying means for applying a vacuum to the lower side of the dye injecting means through the fabric at the opposite side of the dye injecting means with respect to the fabric so as to apply a vacuum pressure thereto. At this time, in the present invention, the far-end conveying means may be a conveyor belt made of a mesh, a synthetic resin having a hole or a rubber belt so that a vacuum pressure can be applied to the fabric.

In the present invention, at least one of the dye injecting means and the far-end feeding means may further include a heating means for raising the temperature so that moisture or solvent components in the dye can be quickly removed from the fabric.

According to the present invention, the fabric including two or more materials can be printed by the digital textile printing method, and the quality of the printing can be uniformly maintained in the printing operation.

According to the present invention, in performing a printing operation using a digital textile printing method for a fabric including two or more materials, the same fabric may be repeatedly printed on a printer for printing with a printing dye suitable for each material, It becomes unnecessary to print while passing through the printer, and it becomes possible to perform a uniform print of a certain degree or more on both materials by using a single printing printing in one printing printer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram schematically showing an apparatus configuration of an embodiment of the present invention;
2 is a plan view of an apparatus according to an embodiment of the present invention,
3 is a front view of an apparatus according to an embodiment of the present invention,
FIG. 4 is a front view of an apparatus constituting another embodiment of the present invention;
5 is a front view of an apparatus constituting another embodiment of the present invention;
Figures 6 and 7 are conceptual plan views schematically illustrating another example of the form in which the dye-jetting means of the present invention is coupled to the dye transfer means.
8 is a flow chart illustrating each step of a method of making another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 3, a printing apparatus according to an embodiment of the present invention includes a far-end feeding unit 10, a dye-feeding unit 20, a dye-feeding unit 30 ) And adjusting means (not shown), such as a controller, for controlling the driving of these means according to the printing design. However, in the dye spraying means, a plurality of dyes corresponding to the material are prepared so as to print on a plurality of materials.

Here, the far-end feeding means 10 performs a function of feeding the dye-ejecting means 20 for printing in a state in which the fabric, which is an object to be printed, is fed. The fabric conveying means 10 has a conveyor belt 11 for moving the fabric in a stretched state and a roller assembly for moving the conveyor belt 11. The roller assembly is composed of a plurality of rollers 13, the roller 13 is driven by a motor, and the motor is driven by receiving power adjusted according to a signal of the controller. This far-end feeding means 10 functions in a manner similar to the feeding device of a general printer.

The conveyor belt 11 is coated with point-wax so that the fabric can be stably stuck without being slid while the fabric is being conveyed thereon. The roller (13) rotates to move the conveyor belt (11) by using the friction between the surface and the conveyor belt (11). When the conveyor belt 11 coupled to the roller 13 is moved in an endless track form, the fabric seated on the surface of the conveyor belt 11 also moves under the dye spraying means.

The conveyor belt 11 is divided into three sections so as to have a gap at the positions of the two heads 21 and 23 of the dye-ejecting means 20 described later.

The dye-jetting means 20 is normally viewed as a head of a printer, and functions similar to an ink cartridge of a printer for paper printing. A nozzle for spraying the dye, a nozzle for spraying the dye, and a nozzle for spraying the dye. The nozzle is provided with a bubble jet or a piezoelectric piezo effect. Jet method. Usually, the nozzles of the head are constructed by arranging a plurality of individual nozzles in a matrix form, and when the resolution is high, more nozzles are arranged in the same area. Inside the head, black and head for each color for the three primary colors can be prepared separately.

However, unlike the conventional digital textile printer, in the present invention, individual dye spraying means for spraying a dye suitable for each material constituting the fabric is provided.

For example, in the present embodiment, it is assumed that the material constituting the fabric to be printed is a polyester and a face, and a first head 21 including a dye and a nozzle for taking charge of the face, and a dye and a nozzle And the second head 23 including the two heads are provided.

Each head is coupled to a first dye transfer means 31 and a second dye transfer means 33, which are respective individual dye transfer means. The dye transfer means 30 transfers the heads 21 and 23 up and down in the y-axis direction if the far-end transferring means 10 transfers the far end from the left to the right in the x-axis direction, The pinion mounted on the step motor shaft may be configured to move precisely and the friction lane formed on the guide shaft may be configured to move the frictionally rubbed rubber wheel attached to the shaft of the step motor.

At this time, each of the heads moves together with the step motor of the dye transfer means 30, and moves to the step motor by a required distance by the signal of the controller according to time.

Below the first dye transfer means 31 and the dye injection means (first head) 21, the second dye transfer means 33 and the dye injection means (second head) 23, And a vacuum applying means 40 such as vacuum inhalers 41 and 43 for applying vacuum so as to pass through the fabric at the opposite side.

Therefore, when the dye is sprayed on one side of the fabric, the vacuum is suctioned on the other side to apply a pressure difference through the fabric, and the dye sprayed on the fabric rapidly moves in the direction of passing through the fabric And are absorbed or spread rapidly in the fabric during the process.

On the other hand, if the dye injected from the nozzle collides with the fabric, a part of the dye may be scattered in the surrounding state. If the vacuum applying means 40 is provided as in the present embodiment, it is also possible to prevent the scattered fine particles from being caught by vacuum suction or sticking to the fabric again to pollute the surrounding environment.

The controller (not shown) transfers x-direction of the raw material through the far-end feeding means 10, y-direction feeding of the dye-feeding means 20 through the dye feeding means 30 according to a rip program, The nozzles of the nozzle 20 are controlled so as to perform printing on the fabric so that a specific pattern can be expressed on the fabric. This particular type of pattern can be pre-entered into the information storage device in the form of data and programs and recognized by the controller. In this sense, the information storage device corresponds to the computer's hard disk or other storage device, the controller corresponds to the computer's processor, and therefore the control means of the printing apparatus can be realized by a computer. The computer calculates the positions of all the heads and the fabrics, and according to the design information (data) and the program input to the storage device, all the heads are moved in accordance with the movement of the fabric, So that the dye is injected. Since the operation of such a controller is well known through a normal printer printing, a more detailed description will be omitted.

In the present embodiment, a specific area of the fabric is conveyed by the conveyor belt 11 once to the position of the first dye transfer means and through the first head 21, , That is, the printing is performed. This particular area then goes to the position of the second dye transfer means and allows printing (printing) with polyester or black dye on the polyester through the second head 23 which is joined together here.

Thus, in this particular area of the fabric, the same color and the same type of printing is made with the dye for each material through the first head 21 and the second head 23, ) Is not greatly affected by the printing operation by the first head 21. In particular, in this embodiment, when the vacuum application means 40 sucks air under the head, the dye injected from the first head 21 is quickly absorbed into the fabric and moisture is easily evaporated, so that moisture (or solvent) The tendency to spread the dye sprayed from the second head can be reduced. As a result, both the cotton and polyester materials in this particular area are dyed in the same color and shape.

Figure 4 shows another embodiment of the present invention. Here, a heating means 50 is provided below the conveying belt 11 for conveying the fabric and above the fabric.

The conveyor belt 11 for conveying the fabric is used as a warm conveyor belt to maintain the fabric always at a constant temperature by using a heater 51 (heater) provided under a rubber or metal mesh belt. A combination of an infrared lamp and a fan or a hot air fan 53 is further provided on the fabric transfer belt above the fabric heating means, for example, to blow warm air at a predetermined temperature to the fabric spread on the belt.

The heating means 50 maintains the fabric at a desired temperature, minimizes changes in pretreatment properties of the pretreated fabric, and prevents bleeding due to moisture at the fabric during dye injection, thereby maintaining high printing resolution.

When operating the heating means 50, it is possible to heat the entire portion of the conveyor belt 11 intensively rather than heating the same portion. The heating means is installed on the conveyor belt which runs from the rear side of the dye injection, so that the moisture in the dye can be quickly evaporated to improve the sharpness of the dye printing.

Particularly, in the section of the conveyor belt behind the first head 21, the moisture of the dye injected from the first head 21 is quickly removed even at a short distance and during a time period, It is possible to concentrate the heating means 51 in order to eliminate as much as possible.

Figure 5 shows another embodiment of the present invention.

Here, unlike the embodiment of FIGS. 1 to 3, the conveyor belt 11 'installed from the lower side of the first head 21 to the second head 23 is made of a metal mesh such as stainless steel or aluminum instead of rubber , A vacuum applying means or a vacuum inhaler 40 'acts under the conveyor belt 11' to apply a suction force through the entire belt.

In this case, the surface of the conveyor belt 11 'on which the fabric is placed can be prevented from sliding or wrinkling of the fabric through the suction force, so that the use of the adhesive wax used for the rubber conveyor belt for the ordinary friction force can be avoided, 21), and the bleeding or other influences in dye printing on the second head 23 can be better excluded.

Although not directly illustrated, the present invention is not limited to the first to second head portions, and the front and rear conveyor belt portions may be made of metal mesh such as stainless steel or aluminum instead of rubber, have.

6 is a conceptual plan view showing an example of the form in which the dye-jetting means of the present invention is coupled to the dye transfer means.

1 to 3, the first head is connected to the first dye transfer means, the second head is connected to the second dye transfer means, and the first dye transfer means and the second dye transfer means are spaced apart from each other in the x- The first head 121 and the second head 123 are provided in one dye transfer means 130. [ However, the first head 121 and the second head 123 are still spaced from each other in the x-axis direction.

In this embodiment, since there is only one dye transfer unit 130, there is an advantage that it is more similar to the conventional DTP printer and has a simple structure. However, since the first head 121 and the second head 123 are spaced apart from each other in the x-axis direction, the first head 121 and the second head 123 are spaced apart from each other by a predetermined distance, You will receive a print.

Thus, in such a configuration, the software for operating the two heads 121 and 123 can be operated similarly, and the greater the degree that the dye of the first head 121 and the dye of the second head 123 do not affect each other, .

As another example of the form in which the dye-jetting means of the present invention is coupled to the dye transfer means, in Fig. 7, the first head and the second head are provided in parallel to each other in the y-axis direction in the same dye transfer means.

On the other hand, although not shown separately, they may be installed and operated in a staggered manner in the x-axis and y-axis directions to the same dye transfer means. In the case of parallel mounting or staggering, both heads must be able to transport a wider range than the y-axis range of the fabric in the dye transfer means in order to cover the full range of the y-axis direction of the fabric.

8 is a flow chart showing each step of an embodiment of the printing method of the present invention.

Referring to this flow chart,

First, a preprocessing step (S10) is performed in which a pretreatment liquid (a foaming agent) is deeply dipped into a raw material, sprayed as a whole, or applied by a padding method. The pretreatment solution of the pretreatment step (S10) may be different depending on the raw fabric, but it is also possible to use a common pretreatment solution.

An unwinding step (S20) is performed in which the preprocessed fabric is mounted on an unwind machine portion in a roll state and is spread, and the tip end is adhered to the conveying conveyor in a full adhesive manner.

A preheating step (S30) is performed for uniformly controlling the temperature of the fabric before uniformly printing the dye on the conveying belt while uniformly controlling the humidity of the fabric by uniformly controlling the quality of the fabric .

A first dye printing step (S40) for the first material, such as cotton fibers, is carried out in the first head as the fabric is transported and passed to the first head position. At this time, a vacuum inhaler operates at the lower side of the fabric to help penetrate the dye into the interior of the fabric, and to prevent contamination of the surroundings by sucking the dye fine particles scattered from the fabric.

Next, a thermal drying step (S50) is performed. In this step, the temperature of the fabric lowered due to the first dye printing is raised again to a preferable temperature, and the first dye solvent or moisture is removed to prevent the dye printing state from deteriorating due to the dye spreading in the second dye printing step (S60) do.

A second dye printing step (S60) is carried out in which the fabric is transported and passed to the second head position and dyeing of the second head is carried out. At this time, the vacuum inhaler operates under the fabric.

Next, a drying step S70 similar to the above-described thermal drying step S50, a rewinding step S80 for winding the flattened loose material back into a roll form, and a post-finishing step S90 are performed.

In the rewinding step (S80), drying can be further performed in the dryer. In the post-processing step (S90), the fabric is heat-treated at a temperature considering the raw material in the steam boiler, , Dehydration, and tender processing are generally performed.

According to the present invention, the dyeing of one yarn is performed first by the printer, and the printing of the other yarn is not performed by another printer at a later time. In a single printer, the first printing position and the second printing position It is possible to precisely align the dyeing position sufficiently with the present printer printing technique even when considering that the fabric is mostly elastic.

In addition, since the problem of excessive cost, time and effort due to double printing can be solved, it is possible to perform printing processing that fully takes advantage of digital textile printing suitable for a small variety of designs.

Further, in the first dye printing and the second dye printing in the present invention, when a difference in air pressure is provided on the front and rear sides of the cloth to help penetrate the dye and actively remove water and solvent through the cloth heating, the method and apparatus of the present invention It is possible to apply even when double application of white ink and color ink of pigments dyes can be widened.

In addition, in the present invention, in order to increase the utilization of the equipment, the main purpose is to print a composite material by using a plurality of dyes having different properties, and even when there is no composite material printing operation, Alternatively, the printing operation may be divided by dividing a region in the traveling direction of the fabric while supplying the same kind of printing dye to a plurality of different head portions. In particular, when printing is performed by dividing the printing area by the head, it is possible to have a unique advantage that the double-speed printing operation can be carried out at a speed of high printing speed compared to the speed of general printing, Thereby increasing the absorption rate of the dye and heating the periphery to promote drying.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. .

10: fabric conveying means 11, 11 ': conveyor belt
13: roller 20: dye injection means
21, 121: first head 23, 123: second head
30, 130: dye transfer means 40; Vacuum applying means
50: heating means 51:
53: Hot air fan

Claims (9)

A printer for digital textiles is provided with a plurality of printing dyes suitable for two or more materials contained in a target fabric in one printer,
And printing is performed on each of the points to be printed on the fabric, thereby printing is performed. The method according to claim 1,
A plurality of printing dyes respectively suitable for two or more materials are sprayed onto the same printing target point of the fabric by respective nozzles to perform printing,
Wherein the nozzle is positioned at the same point on the fabric while moving the spray nozzle to the printing dye. 3. The method according to claim 1 or 2,
Characterized in that a dye for one material is first sprayed and a dye for another material is sprayed with a time difference, and a printing method of a digital textile printing method for a composite material. 3. The method according to claim 1 or 2,
Wherein when the dye is sprayed on one side of the fabric, vacuum suction is applied to the other side to apply a pressure difference through the fabric. 3. The method according to claim 1 or 2,
Wherein the fabric is heated by a heating means at least one of a feeding path of the fabric and an injection position of the dye. A far-end conveying means for conveying the target fabric in a stretched state,
A dye injecting unit including a nozzle and a dye for injecting dye into the fabric during the transfer of the fabric using the fabric transferring unit,
A dye transfer means for controlling the movement of the dye injection means,
And a controller for using the pattern or coloring material of the target fabric to use the dye and spraying the dye at a predetermined position of the target fabric in consideration of the transfer speed and position of the fabric,
Wherein the dye spraying means comprises a plurality of dyes and a nozzle for each dye. The method according to claim 6,
The dye-jetting means is configured to jet the plurality of dyes and the spray nozzles with a predetermined time difference between dyes suitable for the dyes when the positions of the dyes associated with the respective dyes are spaced from each other and the dyes are sprayed to the same point of the dyed A printing method of a digital textile printing system for a composite material. The method according to claim 6,
And a means for applying a wind pressure or a suction force to the dye spraying means or the upper or lower portion of the raw material transfer means so as to generate an air pressure difference through the raw material on the opposite side of the dye spray means with respect to the raw material. Digital textile printing system for composite materials. The method according to claim 6,
Characterized in that at least one of the fabric transferring means and the dye injecting means is provided with a heating means for heating the fabric.

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