JP2003342882A - Method for dye-processing fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for dye-processing a fabric, not exhibiting discrepancy in patterns between the surface side and back surface side. <P>SOLUTION: This method for dye-processing the fabric comprises separating warp yarns wound on a same beam 5a into surface pile warp yarns 1 and back surface pile warp yarns 2 in sheet states, dyeing for forming the same pattern as the pattern expressed on the surface of the fabric, and then winding on a finish beam 5b. Since the pile warp yarns 1, 2 are drawn out under a fixed tension and transported at a same speed, the dyed patterns of the surface pile warp yarns and the back surface pile yarns do not get discrepancy. Therefore, the patterns expressed on the surface and back surface of the pile fabric are made so as not to form the discrepancy between the surface and the back surface. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dyeing a woven fabric such as towels, towelettes, sheets, clothes, curtains and carpets.

[0002]

2. Description of the Related Art A woven fabric is a woven design in which warp yarns and weft yarns are vertically orthogonally arranged in accordance with a certain rule, and typical production processes thereof are a warping process, a weaving process and a dyeing process. is there.

The warping step is a preparation step for the weaving step, in which the necessary number of warp threads is corrected, the intervals, lengths, tensions, etc. are adjusted appropriately and aligned, and wound up into a beam or the like.
The weaving process is a process of forming a weaving design, and the warp and the weft, which have been warped in the warping process, are vertically crossed to each other so as to be woven. The dyeing step is a step of coloring a yarn or a fabric with a dye or the like by a method such as dipping or printing.

In the dyeing process, there are cases of coloring before weaving into a woven fabric and cases of coloring after weaving into a woven fabric.
Specifically, (1) yarn dyed at the stage of yarn (dyed yarn)
On a dobby loom or a jacquard loom to express a pattern, (2) to print a woven fabric to give a pattern, and (3) to dye and dye the woven fabric. It was

However, the above dyeing method has drawbacks. That is, according to the method (1), even if the fabric can be used in multiple colors, each thread constituting the fabric has one color, so that a complicated pattern full of colors can be expressed. Was difficult. Further, a pattern symmetrical to the front surface is expressed on the back surface of the fabric, and it is not possible to express a pattern only on the front surface or a completely different pattern on the front and back surfaces.

Further, according to the method (2), a complicated pattern full of colors can be expressed, but the dye penetrates only into the surface of the woven fabric, so that the color is different from that of the dyed fabric. Was lacking in depth. This is remarkably observed in thick or long woven fabrics such as pile fabrics, and the collapse of the handle occurs due to the piles or fluffs falling over during dyeing. In order to improve this, there is a method of printing after shirring (cutting the surface of piles or fluffs), but the thinner the fabric, the more the dye can penetrate to the inside, but it is not perfect. Further, there is a problem that the water retention rate and heat retention of the woven fabric itself are reduced by cutting the surface of the pile or the fluff.

The pile woven fabric is a kind of woven fabric and is composed of warp yarns composed of pile warp yarns and ground yarns and weft yarns, forming piles (wanna) on the cloth surface of the woven fabric,
It has good touch and heat retention. The pile is formed by causing tension of the pile warp to be much looser than that of the base yarn so that part of the pile warp jumps out in a loop shape on the surface of the fabric.

Furthermore, according to the method (3), when the whole can be dyed in only one color and a pattern is desired to be expressed, the weaving method should be devised to express the pattern or character, or is represented by embroidery. It depends on the post-process, which is troublesome.

Japanese Patent Laid-Open No. 5-86538 discloses a method for producing a woven fabric which can express a complicated pattern full of colors and is dyed even inside the woven fabric. In the method for manufacturing a woven fabric described in JP-A-5-86538, a pile warp yarn is divided into two groups of yarn sheets, and printing is performed on each of them.
Place one of these two groups of pile warps on the front side,
By arranging the other side on the back side and weaving a double-sided pile towel fabric together with the ground warp and the weft, it is possible to reveal the pattern, characters, or both of the two sides of the fabric based on the printing of the pile warp asymmetrically. A method for producing a characteristic printing towel fabric.

More specifically, as shown in FIG. 7, in the first step, the pile warp yarns 1 of the first group wound around the blank beam 11a are sent in the form of a yarn sheet, and the desired number of flat type screen printing machines 12 are used. Printing the pattern, the first beam 13a
Roll it up. Similarly, in the second step, the blank beam 1
1b The pile warp yarns 2 of the second group are printed, and the second beam 13b
Roll it up. Then, in the third step, the first beam 1
The yarns 3 and 2 are simultaneously sent out from the second beam 13b so that the two groups of yarn sheets 1 and 2 are placed one above the other, and wound into one weaving beam (finished beam) 5 for the weaving process.

According to this method, since the pattern of the printing applied to the pile warp yarns divided into the two groups of yarn sheets appears on the surface of the towel fabric as it is, it is possible to express a complicated pattern full of colors. Further, by printing the pile warp yarn in the form of a yarn sheet, the pile yarn in the printing portion is colored to the root,
The base of the pile of towel fabric is colored. Further, the pile warp is divided into two groups of yarn sheets, each of which is subjected to printing, and one of the two groups of the printed pile warps is arranged on the front side, and the other is arranged on the back side. Since the towel fabric is woven, all the prints applied to one group appear on the front side, and all the prints applied to the other group appear on the back side, and there is no relation between the two. Therefore, it is possible to have a pattern, a character, or both of them, which are based on the printing of pile warp yarns, on both sides of the woven fabric asymmetrically.

[0012]

However, since the pile warp yarns of the first group and the pile warp yarns of the second group are wound into separate beams (first beam and second beam) during the printing process, both groups are It is difficult to keep the tension of the pile warp yarns the same. This is because the tension of the thread varies even with subtle differences in atmosphere such as temperature and humidity.

Therefore, even if wound on the same completed beam thereafter, the printing pattern applied to both groups is displaced, and one of the pile warps of both groups is on the front side of the towel fabric and the other is on the back side. When the towel cloth is placed, the pattern shifts between the front surface and the back surface of the towel fabric. Further, when the first beam and the second beam are wound on the same weaving beam, it is time-consuming and difficult to align the pattern on the front surface with the pattern on the back surface.

When the patterns on the front side and the back side of the towel woven fabric are misaligned in this way and the towel woven fabric is cut into pieces one by one, as shown in FIGS. Was cut off on the way and was not for sale. Normally, if the deviation between the front and back patterns is 5 mm or more, it cannot be sold.

Further, in the method for producing a woven fabric described in JP-A-5-86538, a flat screen printing machine is used as a printing means, and several flat screen printing machines are used.
Dye each color. With the flat screen printing machine,
Since the belt stops during squeezing and moves after squeezing is completed, the beam is repeatedly sent out for hundreds of kilometers of pile warp, where rapid braking and rapid starting are repeated, but print misalignment occurs. If it is 1 cm, it will not be a product, so precision is required to send out the beam, which is very difficult. Further, due to the sudden braking and the sudden start, there is a possibility that the front pile warp and the back pile warp are stretched differently, which also causes the shift of the handle.

Further, when performing printing with a flat screen printing machine, the sheet of pile warp must be firmly fixed to the belt with glue so as to prevent the sheet of pile warp from slipping in order to perform squeezing. However, when the pile warp yarns are fed into the loom in the subsequent weaving process, the pile warp yarns must be completely separated so that each one can be independently put into a comb-shaped reed having 50 yarns in 3.79 cm. After drying, when peeling the thread fixed to the belt with glue and separating the threads from each other because the threads are also glued together, it is extremely difficult to completely separate the threads without cutting them. It is a skill. Even if a reed is installed and dried before being dried, the reed is stained in various colors due to the print, so that the reed is contaminated and the subsequent yarn is contaminated.

Further, according to the flat screen printing, the print glue is accumulated between the yarns of the pile warp yarns, the print glues are not absorbed by the yarns, and the back surface of the succeeding screen is contaminated. Will contaminate the yarn. In this way, using a flat screen printing machine,
It is very difficult to print a sheet of yarn.

In view of the above, it is an object of the present invention to provide a method for dyeing and processing a woven fabric in which the front pattern and the back pattern are not displaced.

[0019]

In order to solve the above-mentioned problems, the present invention separates a warp wound on the same beam into a front yarn and a back yarn in a sheet shape, dyes the same, and then It is a method for dyeing and processing a woven fabric, which comprises winding the finished beam. By winding the front yarn and the back yarn wound on the same beam on the same completed beam, they will be wound under the same atmosphere such as temperature and humidity, and the tension of the front yarn and the back yarn between the beams and the The speed of movement can be kept the same. Therefore, between the beams, the pattern dyed at the same distance from the finished beam by the front yarn and the back yarn is wound up on the finished beam at the same time, so that the patterns appearing on the front side and the back side of the fabric are misaligned. Absent.

Further, the warp thread hung on the creel is divided into a front thread and a back thread in a sheet shape, dyed under the same tension and the same speed, and then wound into the same completed beam. May be. By making the tensions of the front yarn and the back yarn the same and moving speeds the same, the pattern dyed at the same distance from the finished beam by the front yarn and the back yarn is simultaneously wound up on the finished beam. Therefore, the patterns appearing on the front side and the back side of the fabric do not shift.

As the dyeing means, hand printing (hand screen), auto screen, rotary screen,
Roller printing, transfer printing, printer, discharge printing, dye-proofing,
Although various dyeing methods such as waxing and casting can be used, it is optimal to use a non-contact printer in which the header dyes the fabric in a non-contact manner. In other words, non-contact type ink jet printers, etc. do not jet the dye to the fabric and dye it without contacting the fabric, so that the tension of the warp does not fluctuate and the sheet is placed on the belt like a flat screen printing machine. It is not necessary to glue the warp-shaped warp with glue. Therefore, there is no need for a work process of separating the yarn before weaving.

Further, since the ink jet printer can print the sheet-like warp while transferring the sheet-like warp at a constant speed without repeating sudden braking and sudden start, it is unlikely that the pattern of the printing will be displaced, and There is no unreasonable growth. Therefore, the pattern does not shift on the front and back surfaces of the fabric.

Further, in the flat screen printing machine, since it is necessary to directly contact the warp by squeezing, the back side of the subsequent screen is contaminated by the print paste accumulated between the warps as described above, and the subsequent warp is contaminated. However, if an inkjet printer is used, such a problem does not occur because it is not in contact with the fabric. A dye and a pigment can be used as the raw material for dyeing.

When the front yarn and the back yarn are pile yarns, the back yarn is hidden on the surface of the woven fabric by the pile formed by the front yarn, and the back yarn of the woven fabric is covered by the pile formed by the back yarn. Since it is hidden, the pattern dyed on the front yarn can be exposed only on the front surface of the fabric, and the pattern dyed on the back yarn can be exposed only on the back face of the fabric.

If the front yarn and the back yarn are dyed with different designs, a pattern is formed on the front and back surfaces of the fabric, and different designs can be expressed on the front and back surfaces.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. A method for dyeing a pile fabric will be described as an example of a method for dyeing a fabric according to the present invention. As shown in FIG. 5, the pile woven fabric has a weaving structure in which a warp composed of a front pile warp 1, a back pile warp 2 and a base yarn 3 and a weft 4 are orthogonal to each other. It is formed through the steps, and if necessary, other steps such as a sizing step or an embroidery step are performed.

As shown in FIGS. 1 and 2, the method for dyeing and processing the pile fabric of the present invention is to separate the warp of the beam 5a after the warping step into a sheet shape into a front pile warp thread 1 and a back pile warp thread 2, After dyeing each, they are wound on the same finished beam 5b for weaving.

That is, the warp of the beam 5a is separated into the front pile warp 1 and the back pile warp 2 and passed through the reed 6 to form a sheet. The sheet-shaped warp yarns 1 and 2 are dyed by an inkjet printer 7, further dried by a dryer 8 provided on the downstream side, and then wound on the same completed beam 5b.

The ink jet printer 7 dyes the front pile warp yarns 1 and the back pile warp yarns 2 arranged in a sheet in the same pattern as the pattern expressed on the finished pile fabric surface. At this time, the sheet-like front pile warp yarns 1 and back pile pile warp yarns 2 are dyed so that the front surface and the back surface of the pile fabric face each other at the same distance to the completed beam 5b. When the pile is formed, the pattern on the fabric surface shrinks and warps in the warp direction. Therefore, it is preferable to dye the adjusted pile pattern on the front pile warp yarn 1 in consideration of the rate of the distortion. Although the inkjet printer 7 is used as the dyeing means, other dyeing means may be used.

Although the front pile warp 1 and the back pile warp 2 in sheet form are arranged vertically, they may be arranged side by side as shown in FIG. At this time, one inkjet printer may dye both simultaneously.

The finished beam 5b, on which the front pile warp yarn 1 and the back pile warp yarn 2 which have been subjected to the above dyeing process are wound up, is then subjected to a weaving process. The weaving step is a step of forming a woven structure, and is performed using a loom (not shown). The front pile warp 1 and the back pile warp 2 wound up on the finished beam 5b are set on the loom as they have been warped in the warping step, and the ground yarn 3 and the weft 4 are also set on the loom. Then, a pile weaving design composed of the front pile warp yarn 1, the back pile warp yarn 2, the ground yarn 3 and the weft yarn 4 is formed by the basic motions of the loom opening motion, weft insertion motion, and beating motion.

According to the above structure, when the same beam 5a is rewound into the same completed beam 5b, the front pile warp yarn 1 and the back pile warp yarn 2 between the beams 5a and 5b can be kept at a constant tension. Further, since it can be drawn out into a sheet shape at the same moving speed, if dyeing is performed by the ink jet printer 7 between the beams 5a and 5b, the finished beam 5b is simultaneously wound and the front pile warp 1 and The pattern dyed on the back pile warp yarn 2 does not shift. Therefore, the patterns expressed on the front and back surfaces of the pile fabric can be prevented from shifting.

Then, the front pile warp yarn 1 and the back pile warp yarn 2 wound and dyed on the finished beam 5b are arranged in an array,
Since the weaving is performed while maintaining the space and tension, the patterns dyed on the sheet-shaped front pile warp yarns 1 and back pile pile warp yarns 2 appear on the front and back surfaces of the fabric without shifting. Further, as shown in FIG. 6, the portion of the front pile warp 1 passing behind the wefts 4 is hidden by the pile of the back pile warp 2, so that the color of the front pile warp 1 is less likely to reverberate on the back surface. Conversely, the back pile warp 2 weft 4
The portion passing through the front side is hidden by the pile of the front pile warp yarns 1, so that the color of the back pile warp yarns 2 is less likely to affect the front surface. Further, unlike the case where the pattern is expressed by using the yarn-dyed yarn, the weaving can be performed without worrying about the arrangement of the yarns, so that the weaving is easy. At this time, different dyes can be expressed on the front and back sides by dyeing different colors on the front pile warp yarn 1 and the back pile warp yarn 2.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, in the above embodiment, dyeing is performed when the beam 7 after warping is rewound on the completed beam 5b, but dyeing may be performed during the warping step as shown in FIG. That is, the warp thread hung on the creel is separated into a front thread and a back thread in a sheet shape, dyed under the same tension and the same speed, and then wound into the same completed beam.

The warping step is a step in which the required number of warp yarns is corrected, the intervals, lengths, tensions, etc. during weaving in the weaving step are appropriately adjusted and arranged in a sheet shape, and wound up into a finished beam for weaving. is there. First, as shown in FIG. 4, for each of the front pile warp yarn 1 and the back pile warp yarn 2, the necessary number of cheeses or corns 9 are set on a creel 10 (frame for setting a large amount of 8 such as cheese). The thread is divided into two sheets and pulled out. One sheet-shaped yarn is the front pile warp 1 and the other sheet-shaped yarn is the back pile warp 2. At this time, the two sheets 1 and 2 are pulled out while measuring a certain length under a certain yarn interval and a certain tension, and the yarn interval is adjusted by the reed 6. Then, the sheet-like front pile warp 1 and the back pile warp 2 are wound on the same completed beam 7. The yarn from the cheese or the corn 9 is also warped in the warping process for the ground yarn 3,
It is wound up in a beam.

The step of dyeing the warp yarns 1 and 2 is provided in the middle of the warping step. Ie cheese or corn 8
On the front pile warp yarns 1 and the back pile warp yarns 2 arranged in a sheet shape until the yarn is pulled out from the fabric under a constant tension and a constant tension and is wound up on the finished beam 7 as a dyeing means. The inkjet printer 7 is provided, and the dryer 8 is provided downstream of the yarn flow.

According to this construction, the front pile warp yarn 1 and the back pile warp yarn 2 are dyed under the same tension and the same speed and wound on the same completed beam as in the above. There is no misalignment of the patterns on the front and back of the fabric.

The method of dyeing and processing the present fabric is not limited to the pile fabric, and may be a fabric not forming a pile.

[0039]

As is apparent from the above description, according to the present invention, it is desired to express the front pile warp yarns and the back pile warp yarns wound on the same beam as separate sheets and draw them on a woven surface. After dyeing the same pattern as the one, it is wound into the same completed beam. Since the tension and the moving speed of the front pile warp and the back pile warp between the beams can be kept the same, the pattern of the front pile warp and the pattern of the back pile warp do not shift. Therefore, the patterns expressed on the front and back surfaces of the pile fabric can be prevented from shifting.

[Brief description of drawings]

FIG. 1 is a diagram showing a dyeing process of the present embodiment.

[Figure 2] Schematic diagram

FIG. 3 is a diagram showing a dyeing process of another embodiment.

FIG. 4 is a diagram showing a dyeing process of another embodiment.

FIG. 5 is a tissue cross-sectional view of a pile fabric.

FIG. 6 is a perspective view of a pile fabric.

FIG. 7 is a schematic diagram of the configuration of a conventional dyeing process.

FIG. 8: (1) Conventional pile fabric in which the patterns on the front and back surfaces are not displaced (a) A plan view of the front surface thereof, (b) A plan view of the back surface thereof (2) Misalignment of the patterns on the front and back surfaces occurs Conventional pile fabric (a) Plan view of the front surface thereof, (b) Plan view of the back surface thereof (3) Conventional pile fabric with front and back patterns displaced (a) Its front surface Plan view, (b) Plan view of the back surface

[Explanation of symbols]

1 Front pile warp 2 Back pile warp 3 ground yarn 4 weft 5b completed beam 7 inkjet printer 8 dryer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) D06P 5/00 127 D06P 5/00 127 F term (reference) 4H057 AA02 DA01 DA33 EA21 FA26 FA31 GA06 GA17 GA20 4L052 BA01 BB04 MA01 PA05

Claims (5)

[Claims] 1. A method for dyeing a woven fabric, characterized in that a warp wound on the same beam is separated into a front yarn and a back yarn in a sheet shape, dyed, and then wound on the same finished beam. . 2. A warp thread hung on a creel is separated into a front thread and a back thread in a sheet shape, dyed under the same tension and the same speed, and then wound into the same finished beam. Characteristic textile dyeing method. 3. The method for dyeing a woven fabric according to claim 1, wherein the dyeing means uses an inkjet printer in which the header dyes the woven fabric in a non-contact manner. 4. The method for dyeing and processing a woven fabric according to claim 1, wherein the front yarn and the back yarn are pile yarns. 5. The method of dyeing a woven fabric according to claim 1, wherein the dyeing is performed by applying different patterns to the front yarn and the back yarn.