JPH0791790B2 - How to print acrylic fiber - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acrylic fiber printed by printing a pile of acrylic fiber with a cationic dye to discharge the surface portion of the pile and to apply a heavy color to the discharged portion of the surface. It is about the method.

[0002]

2. Description of the Related Art FIG. 6 shows an example of a screen printing apparatus, which includes a flat screen printing machine 11, a dryer 12, and a steamer.
13 and open soaper 14 are arranged in series. The conventional general printing method using this screen printing device is that the cloth 15 wound in a roll shape at the left end is conveyed to the flat screen printing machine 11 to dye dye paste, and the printed dye paste is dried. After that, the discharge paste is further printed on the printing portion to discharge the dye. The cloth that has undergone the above steps is dried by the dryer 12, steamed by the steamer 13 to dye the dye, and then washed and washed with the open soaper 14.

FIG. 7 shows another screen printing apparatus, which does not have a drying device 12 as compared with the above-mentioned apparatus. This Figure 7
The conventional printing method using the screen printing device shown in is called the wet-on-wet method, in which the dye paste is printed by the flat screen printing machine 11, and the printing portion of this dye paste is further discharged in the wet state. The paste is printed and the dye is discharged. Then, after being steamed by the steamer 13 without going through the drying process, it is washed with water and washed by the open soaper 14.

What is common to this conventional printing method is that when the dyed portion dyed with the dyeing paste is discharged with the discharging paste, the entire pile surface to the root is discharged.

[0005]

However, in the conventional dyeing method, when the pile is dyed with a dye and discharged with a discharge agent, the pile is discharged from the tip to the root of the pile. Discoloring the part and blurring the color to make it dull, or discharging and lightening only the central part from the surface of the pile, that is, the upper half of the pile, and dyeing this part again and applying a heavy color to various It was not possible to dye shades.

The present invention has been made to solve the above problems, and has as its object to provide a printing method of an acrylic fiber which can make a color dim or give a heavy color.

[0007]

According to the present invention, a pile of acrylic fibers is printed with a cationic dye of one or more colors by a printing device, and the wet process until the cationic dye is dyed onto the acrylic fibers. The entire or part of the imprinted part in a stable state is phenolsulfonate or condensed
A formalin condensate obtained by condensing any compound of ammonium phthalene sulfonate and dihydroxyphenyl sulfone with formalin, and a discharge agent consisting of a mixture of CMC (carboxyl methyl cellulose), from the surface portion of the pile or from the surface to the central portion. Discharge or re-dye this discharge area.

In the present invention, the acrylic fiber covered with pile is printed with a cationic dye of one or more colors by a printing device, and the cationic dye is printed in a wet state until it is dyed on the acrylic fiber. Phenol sulfonate or condensed naphthalene
Discharging is performed from the surface portion of the pile or from the surface portion to the central portion by a discharge agent composed of a mixture of formalin condensate obtained by condensing any compound of ammonium ruphonate and dihydroxyphenyl sulfone with formalin and CMC (carboxyl methyl cellulose). .

[0009]

[Function] Acrylic fiber dyed by the above method is
Sulfonic acid salt or condensed naphthalene sulfonic acid
A formalin condensate condensed compound of any of ammonium salt and a dihydroxy phenylalanine sulfonate formalin, by discharging the discharging agent consisting of a mixture of CMC, discharging the discharging effect of the discharging agent to the surface portion or the central portion of the pile You can do it. Therefore, the surface of the cloth can be blurred. Furthermore, by re-dying the discharged portion, the upper half and the lower half of the pile can be dyed with different colors to give a heavy color.

[0010]

EXAMPLE An example of the present invention will be described below. 1 to 5 are cross-sectional views of a fabric showing a process of multicolor printing of the present invention, in which 1 indicates a woven portion of acrylic fiber and 2 indicates a pile of acrylic fiber. ing.

In this embodiment, printing is carried out using the conventional screen printing apparatus shown in FIG. Therefore, the device and its drawing number will be described with reference to FIG. First, as shown in FIG. 1, the flat screen printing machine 11 drops a printing paste in which a yellow cationic dye is mixed in the Y portion of the pile 2 from a No. 1 type scooter and prints it in yellow. And
Further, as shown in FIG. 2, the flat screen printing machine 11
The printing paste mixed with the blue cationic dye is dropped from the No. 2 type scoon on the B portion. FIG. 3 shows that the yellow and blue printing pastes are dropped as described above, and the superposed G portion becomes green and has three hues. In addition,
The printing process of FIGS. 1 to 3 is exactly the same as the conventional screen printing.

By the way, the cationic dye becomes very fast when the acrylic fiber is completely dyed. Therefore, discharge printing is performed by destroying the dye before the cationic dye is dyed on the acrylic fiber. That is,
The cationic dye decomposes the cationic dye before the secondary dislocation point of the acrylic fiber (a temperature of 70 ° C to 80 ° C at which the acrylic fiber molecules move violently in the steamer of the dyeing process and the cationic dye easily enters the fiber). Need to be erased.

Therefore, prior to the steaming step of FIG. 7, as shown in FIG. 4, the aromatic sulfonic acid condensation level obtained by adding CMC (carboxyl methyl cellulose) from the surface to the central portion of the Y portion, B portion and G portion of the pile is increased. Lightening is performed with a discharge agent made of a molecular compound or the like. The lightened Y, B, and G portions are light yellow, light blue, and light green.

The discharging agent used in the present invention is an aromatic sulfonate, an aromatic polymer condensate, a phenol derivative, an allyl sulfonate condensate, a modified condensed sodium naphthalene sulfonate, or a condensed naphthalene sulfonate ammonium salt. It consists of a formalin condensate obtained by condensing one compound selected from the group and dihydroxyphenyl sulfone with formalin.

More specifically, when formalin condensation is performed by adding formalin to sodium phenolsulfonate and dihydroxyphenylsulfone, 1-phenolsulfonate sodium 1-dihydroxyphenylsulfone 2-
Formalin can be obtained, and this formalin condensate is used as a discharge agent.

The aromatic sulfonic acid-condensed polymer compound thus obtained has an excellent discharge effect, and has a discharge effect even with respect to a cationic dye, which is currently impossible to discharge. In particular, the effect was remarkable for a cationic dye having an azo group (-N = N-). Moreover, this compound did not cause yellowing of the white discharge-printed portion over time.

Further, CMC (carboxyl methyl cellulose) is added to the above discharge agent. CM for discharge agent
By adding C, it is possible to discharge only the intermediate portion, that is, the upper half of the pile, from the surface of the pile.

After the upper portion of the pile is lightened as described above, the lightened portion is dyed with a red dye, as shown in FIG. When a red dye that is not discharged is mixed in the discharge agent, it can be dyed in red simultaneously with discharge by colored discharge. By dyeing red, the O portion becomes orange, the Br portion becomes brown, and the V portion becomes purple.

In the above embodiment, an example of dyeing with 5 colors has been shown, but the number of colors can be further increased by increasing the number of screen molds. Further, although the case where the O portion, the Br portion, and the V portion are light-colored is shown in the above-mentioned embodiment, the light-colored portion may be colored without being light-colored and dyed red. Whether to lighten the color or remove the color depends on the CMC discharge printing agent, which will be described later, and the mixing ratio of the diluted paste.

Further, in the above-mentioned embodiment, the light-colored or discharge-printed part is dyed again, but the surface of the pile fabric may be finished without being dyed again.

Using the printing method as described above, multicolor printing, rag printing, and reversible printing (pile 2 is dyed into two colors and half of pile 2 is woven part 1)
Can be performed by pulling out to the back side to make the front and back colors different, and performing a three-dimensional print (displaying a perspective by partially discharging the surface).

Table 1 below shows an example of the blending ratio for the above dyeing method by adding CMC to the discharge agent.

[0023]

[Table 1] The diluted paste (A) is a 4% solution of CMC as described above, and various dyes can be dyed according to the density of pile length cloth by changing the blending ratio of CMC-added discharge agent and diluted paste (A). Becomes Also, the screen-type mesh is variously changed to adapt to piles and the like.

Dyeing method 1 is a composition for the purpose of blanking half of the pile. Dyeing method 2 shows an example of a blending ratio for the purpose of color discharge printing, and a disperse dye which is not discharge-printed is mixed in a discharge agent.

Dyeing method 3 shows an example of the blending ratio of a multicolor print in which various colors are overlaid. Dyeing method 4 shows an example of a blending ratio for lightening, and can be dyed with various intermediate colors as described above.

Dyeing method 5 shows a blending ratio in the case of performing discharge printing and semi-discharge printing in combination with designing and patterning technology to perform animal-like printing.

[0027]

The acrylic fiber printing method according to the present invention is carried out by discharging the surface portion of the pile to blur the color to finish it in a rag, or discharging from the surface of the pile to the central portion.
Alternatively, it is possible to lighten the color, dye this portion again, and apply a heavy color to dye with various shades.

[Brief description of drawings]

FIG. 1 is a first printing method according to an embodiment of the present invention.
It is sectional drawing of the cloth which shows a process.

FIG. 2 is a second printing method according to an embodiment of the present invention.
It is sectional drawing of the cloth which shows a process.

FIG. 3 is a cross-sectional view of the cloth after the first step and the second step.

FIG. 4 is a third printing method according to an embodiment of the present invention.
It is sectional drawing of the cloth which shows a process.

FIG. 5 is a fourth printing method according to an embodiment of the present invention.
It is sectional drawing of the cloth which shows a process.

FIG. 6 is a schematic view showing a conventional screen printing device.

FIG. 7 is a schematic view showing another conventional screen printing device.

[Explanation of symbols]

 1 Woven part 2 Pile Y Yellow dyed part B Blue dyed part G Green dyed part O Orange dyed part V Purple dyed part Br Brown dyed part

Claims (2)

[Claims] 1. An acrylic fiber covered with a pile is printed with a cationic dye of one or more colors by a printing device,
The entire or part of the printing portion in a wet state until the cationic dye is dyed on the acrylic fiber is treated with phenol.
Sulfonate or condensed naphthalene sulfonic acid ammone
A discharge agent consisting of a mixture of a formalin condensate obtained by condensing any compound of a nickel salt and dihydroxyphenyl sulfone with formalin, and a mixture of CMC (carboxyl methyl cellulose), is discharged on the surface portion of the pile, or from the surface to the central portion, A method for printing an acrylic fiber, which comprises dyeing the discharge-printed portion again. 2. An acrylic fiber covered with pile is printed with a cationic dye of one or more colors by a printing device,
The entire or part of the printing portion in a wet state until the cationic dye is dyed on the acrylic fiber is treated with phenol.
Sulfonate or condensed naphthalene sulfonic acid ammone
Discharging from the surface part of the pile, or from the surface to the central part, with a discharge agent composed of a mixture of formalin condensate obtained by condensing any compound of a ammonium salt and dihydroxyphenyl sulfone with formalin and CMC (carboxyl methyl cellulose). Characteristic acrylic fiber printing method.