JP2011038191A - Printed woven or knitted fabric and printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed woven or knitted fabric on whose front and back sides patterns symmetrical to each other have been printed, wherein the patterns have different colors on the front and back sides and to provide a printing method therefor. <P>SOLUTION: The printing method includes the first printing step for printing first printing paste on a first printing site from one of the front and back sides of the woven or knitted fabric, the subsequent second printing step for printing second printing paste on a second printing site from the same side as the printing side of the first printing step in a state superposed on the first printing site, and the subsequent third printing step for printing third printing paste from the same side as the printing side of the second printing step in a state superposed to the first and second printing sites, wherein the second and third printing pastes each contain reactive dyes developed in different colors. The third printing paste contains an alkali catalyst, and the first printing paste contains an acid or an acid-generating agent for neutralizing the alkali catalyst. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a printed woven or knitted fabric having front and back symmetrical patterns on the front and back surfaces. The present invention also relates to a textile printing method for imparting a symmetrical pattern to a woven or knitted fabric.

  In dyeing a woven or knitted fabric, a plain woven fabric is dyed by dip dyeing and has the same color on both sides. On the other hand, the printed woven or knitted fabric is dyed with a clear pattern composed of a plurality of colors on the surface, and an unclear pattern including a non-dyed portion or a wrinkled portion appears on the back surface thereof. Therefore, dyeing of a clear pattern on the front surface and the back surface is also required in textile printing knitted fabrics.

  In a thick knitted or knitted fabric, if printing is performed twice from both sides separately, a clear pattern can be dyed on both sides, but a symmetrical pattern cannot be dyed. On the other hand, in thin knitted and knitted fabrics, if printing is performed twice from both sides separately, the patterns on the front and back sides will affect the opposite sides, and the patterns on both sides will be unclear. .

  Therefore, in order to dye a clear pattern on both the front and back sides of a thin knitted or knitted fabric, it is necessary to print a symmetrical pattern. Various methods for printing such a woven or knitted fabric have been proposed. For example, Patent Document 1 below proposes a continuous printing method and apparatus for a strip-shaped fabric that prints on both sides of the fabric symmetrically using an inkjet nozzle. Patent Document 2 below proposes a double-sided printing method and a double-sided printed fabric in which positioning marks are placed at predetermined positions on both sides of a fabric, the surface is inkjet printed, the fabric is turned over, and the back side is inkjet printed again. Has been.

JP-A-11-81162 JP 2001-336073 A

  By the way, in the method and apparatus of the said patent document 1, the special apparatus for performing the printing by an inkjet nozzle from both front and back both sides of the cloth which runs in a elongate direction is required, and the expense of an installation surface increases. There was a problem.

  On the other hand, in the method of Patent Document 2, the fabric is turned over after the first printing and mounted on the printing machine for the second printing. At this time, there is a problem that the position of the pattern is easily shifted and the processing time is long and the productivity is poor. Furthermore, the method of Patent Document 2 has a problem that it is impossible to continuously print a long fabric.

  Furthermore, the printed products printed by the methods of Patent Documents 1 and 2 are printed with symmetrical patterns, but these patterns have the same color. That is, each of the above methods is based on ink jet printing suitable for printing a front / back symmetrical pattern. In this ink jet printing, the viscosity of the ink is low, and the ink easily penetrates into the back surface after the first printing from the front surface. However, the back surface is not dyed to the same extent as the front surface, and an insufficient portion of the back surface is dyed by the second printing from the back surface. Therefore, in the methods of Patent Documents 1 and 2, a woven or knitted fabric having colors with different front and back symmetric patterns could not be dyed.

  In view of the above, the present invention provides a printed woven or knitted fabric in which a symmetric pattern is printed on the front and back surfaces of the woven or knitted fabric, and this pattern has different colors on the front and back surfaces. The purpose is to do. Another object of the present invention is to provide a printing method for printing a woven or knitted fabric by printing a symmetrical pattern on the front and back.

  In solving the above-mentioned problems, the present inventors, as a result of diligent research, have printed a symmetrical pattern composed of different colors by printing the printing paste from either the front or back side of the woven or knitted fabric. As a result, the present inventors have found that a printed woven or knitted fabric can be obtained.

That is, the present invention, according to claim 1,
A textile fabric knitted fabric having a symmetrical pattern on the front and back surfaces,
The pattern includes first and second printing parts penetrating both front and back sides,
The first printed part has the same achromatic color or the same chromatic color on both the front and back sides,
The second printing part has a chromatic color in which the color of the front surface and the color of the back surface are different,
The printed woven or knitted fabric according to the second printing part, wherein the color of one surface of the front surface or the back surface is a mixed color of the color of the other surface and a color different from this color.

  According to the said structure, the 1st and 2nd printing site | part has penetrated both front and back both sides in this textile fabric, and the pattern symmetrical with front and back is printed clearly. The first printed part has the same color on both sides, but the second printed part has different colors on the front and back sides. Therefore, it is possible to provide a printed woven or knitted fabric having patterns with different colors on both the front and back surfaces.

Moreover, according to the description of claim 2, the present invention is the printed woven or knitted fabric according to claim 1,
The first printing part is characterized by comprising a fine line or contour line having a line width of 0.3 mm to 3 mm, or a small handle having a minor axis of 0.3 mm to 3 mm.

  Here, the small pattern refers to all patterns having a small area regardless of the shape, such as a small polka dot pattern (also referred to as a dot pattern) or a small star pattern.

  According to the said structure, the effect similar to the invention of Claim 1 can be achieved also in the textile printing knitted fabric which has delicate patterns, such as a thin line, an outline, or a small pattern. Here, the fine line, the contour line, the small pattern, or the like is formed in the first printing portion having the same color (achromatic color or chromatic color) over both the front and back surfaces.

Moreover, according to the description of claim 3, the present invention is the printed woven or knitted fabric according to claim 1 or 2,
It consists of a woven or knitted fabric mainly composed of cellulosic fibers, and the woven or knitted fabric has a thickness of 100 micrometers or more and 300 micrometers or less.

  According to the said structure, it is a thin woven or knitted fabric mainly composed of cellulosic fibers, and when the thickness is in the above range, patterns with different colors can be expressed on both the front and back surfaces. The same effect as that of the present invention can be achieved.

According to the description of claim 4, the present invention provides
A printing method for imparting a symmetrical pattern to the front and back surfaces of a woven or knitted fabric mainly composed of cellulosic fibers,
A first printing step of printing the first printing paste on the first printing site from one of the front and back surfaces of the woven or knitted fabric;
Subsequent to the first printing step, the second printing paste is printed on the second printing portion while overlapping the first printing portion from the same surface as the printing surface of the first printing step. 2 stamping process,
Subsequent to the second printing step, the third printing paste is printed on the same surface as the printing surface of the second printing step so as to overlap the first printing portion and the second printing portion. With three stamping processes,
The second printing paste and the third printing paste contain reactive dyes having different colors,
The third printing paste contains an alkali catalyst,
The first printing paste contains an acid or an acid generator for neutralizing the alkali catalyst.

  According to the above configuration, all of the first to third printing pastes are printed on the first printing part from the same surface, and the second and third printings are printed on the second printing part from the same surface. The paste is overprinted. On the other hand, the first printing paste contains an acid or an acid generator for neutralizing the alkali catalyst contained in the third printing paste.

  Accordingly, in the first printing portion where the first printing paste is printed first, the alkali catalyst contained in the third printing paste is neutralized by the acid or acid generator contained in the first printing paste. Therefore, the reactive dye contained in the second and third printing pastes cannot develop color.

  Therefore, this 1st printing part will have the same color (achromatic color or chromatic color) over both front and back. That is, if the first printing paste contains a color pigment, the color of the pigment is obtained, and if the first printing paste contains no color pigment, the color becomes white.

  On the other hand, in the second printing part where the first printing paste is not printed, the second and third printing pastes are printed from the same surface, so that they are contained in the second and third printing pastes on the printing surface. The color is mixed with reactive dyes. On the other hand, on the surface that is not the printing surface, the second printing paste printed earlier is extruded by the third printing paste printed later, and on this surface, the reaction contained in the second printing paste. Only the color of the dye appears.

  Here, although the reactive dye and the alkali catalyst are contained in the third printing paste, the reactive dye and the alkali catalyst may not be contained in the second printing paste. Even when the second printing paste initially printed at the second printing site does not contain an alkali catalyst, the alkali catalyst contained in the third printing paste printed later is contained in the second printing paste. The reactive dye contained in the second printing paste can be reacted by migrating.

  Therefore, in the printing method according to the fourth aspect, it is possible to provide a printed woven or knitted fabric having clear patterns with different colors on both the front and back surfaces.

According to the description of claim 5, the present invention is the textile printing method according to claim 4,
The second printing paste contains an alkali catalyst.

  According to the above configuration, in the first printing portion where the first printing paste is printed first, the alkali catalyst contained in the second printing paste and the third printing paste contains the acid or the acid contained in the first printing paste. Neutralized by acid generator. On the other hand, in the second printing part where the first printing paste is not printed, the reactive dye contained in the second and third printing pastes develops color, and the same effect as the invention of claim 4 is achieved. obtain.

According to the description of claim 6, the present invention is the printing method according to claim 4 or 5,
Printing is performed in the first to third printing steps using a roller printing machine.

  According to the above configuration, by adopting a roller printing machine from among various printing machines, the expression accuracy of the fine line pattern and the small pattern is improved, and the same effect as the invention according to claim 4 or 5 is further improved. Can be achieved.

In one Embodiment of the textile printing method which concerns on this invention, it is the schematic which shows the cross section of the cotton fabric before printing. In the said embodiment, it is the schematic which shows the cross section of the cotton fabric after a 1st printing process. In the said embodiment, it is the schematic which shows the cross section of the cotton fabric after a 2nd printing process. In the said embodiment, it is the schematic which shows the cross section of the cotton fabric after a 3rd printing process. It is the schematic which shows an example of the front and back symmetrical pattern of the printed cotton fabric printed in the said embodiment.

  Hereinafter, a textile printing knitted fabric and a textile printing method according to the present invention will be described with reference to an embodiment of the textile printing method. The present embodiment relates to a printing method for imparting a front and back symmetrical pattern to a thin cotton fabric using a roller printing machine.

The printing method according to the present embodiment includes a printing paste preparation step, a printing step, a fixing step, and a cleaning step. Hereinafter, each step will be described.
(A) Printing paste preparation step In the printing paste preparation step in this embodiment, the first to third printing pastes were prepared.

a. Preparation of the first printing paste The first printing paste printed on the first printing site is a so-called acid-proofing dyeing paste and contains an acid or an acid generator. This acid or acid generator neutralizes the alkaline catalyst contained only in the second and third printing pastes or the third printing paste when the first printing paste overlaps with the second and third printing pastes on the cotton fabric. Used to do.

  As the acid, for example, non-volatile organic acids such as tartaric acid, citric acid and malic acid are used. The acid generator neutralizes the alkali catalyst by generating an acid by heating in the fixing step after printing. Examples of the acid generator include salts such as ammonium chloride, ammonium sulfate, and ammonium nitrate.

  The amount of acid or acid generator used in the first printing paste is such that when the first printing paste overlaps the second and third printing pastes on the cotton fabric, the second and third printing pastes or the third printing paste. The amount is not particularly limited as long as it is sufficient to neutralize the alkali catalyst contained only in the catalyst. For example, when tartaric acid or ammonium chloride is used, the amount used is about 3 to 10% by weight based on the first printing paste.

  The first printing paste is divided into a white printing paste that leaves the first printing part white and a colored printing paste that colors the first printing part. The white antifouling paste contains the above-mentioned acid or acid generator, a paste that gives viscosity to the printing paste, and water for adjustment. In addition, a white pigment such as titanium oxide or a fluorescent brightening agent may be mixed in some cases.

  In the white dyeing paste of this embodiment, 6% by weight of tartaric acid is used as the acid with respect to the first printing paste, and a mixture of sodium alginate and O / W emulsion used as a paste in ordinary reactive dye printing. A half emulsion paste, which is a paste, was used. Here, the O / W emulsion is an “oil-in-water” type emulsion in which mineral terpenes made from petroleum are dispersed in water using an emulsifier.

  On the other hand, the color-resisting paste contains the above-mentioned acid or acid generator, a reducer that gives viscosity to the printing paste, a color pigment, a binder for fixing the pigment, and water for adjustment. In the colored anti-staining paste of this embodiment, tartaric acid was used as an acid in an amount of 6% by weight based on the first printing paste, and an O / W emulsion was used as a reducer. The pigment is appropriately selected and blended according to the required color and concentration. As a binder for fixing the pigment, 15% by weight of Ryudye-W Binder RA-TE (acrylic resin emulsion, DIC Corporation) is used with respect to the first printing paste. used.

b. Preparation of second printing paste The second printing paste first printed on the second printing site contains reactive dyes, glues, dyeing assistants and the like. As the dyeing assistant, there are usually alkali, hydrotrope, anti-reducing agent, sequestering agent and the like which are catalysts for reactive dyes.

  The reactive dye contained in the second printing paste has a different color from the reactive dye contained in the third printing paste described below. Thus, when the colors of the second and third printing pastes are different, the colors of the front and back symmetrical patterns of the printed cotton fabric are different.

  The reactive dye used in this embodiment is a dye having at least one reactive group that reacts with cellulose, and these reactive dyes include monoazo, polyazo, anthraquinone, phthalocyanine, and formazan. Or there is a dioxazine type. Here, typical reactive groups for cellulose include a chlorotriazine group, a chloropyrimidine group, a vinylsulfone group, and the like, but are not limited thereto, and any type may be used. Further, it may be a bifunctional dye having a vinyl sulfone group and a monochlorotriazine group.

  The amount of the reactive dye used is appropriately determined depending on the hue of the desired printed pattern and the dyeing density. These dyes may be used in combination with a plurality of dyes in order to match the required hue.

  The paste as the thickening component of the second printing paste may be any paste as long as it does not affect the coloring of the reactive dye, but is used in ordinary reactive dye printing. It is preferable to use a half-emulsion paste that is a mixed paste of sodium alginate and an O / W emulsion.

  Here, the second printing paste may contain an alkali catalyst of a reactive dye, or may not contain an alkali catalyst. In a normal reactive dye printing paste, the reactive dye cannot develop color unless it always contains an alkali catalyst. However, in the present invention, it is contained in the third printing paste printed over the second printing paste. The alkali catalyst to be moved migrates to the second printing paste portion in the reactive dye fixing step, and the reactive dye contained in the second printing paste can be colored.

  In the second printing paste of the present embodiment, the reactive dye is appropriately selected and blended depending on the required color and concentration, and the half emulsion paste used in normal reactive dye printing is used as a paste. In the second printing paste of this embodiment, no alkali catalyst and hydrotrope were used.

c. Preparation of third printing paste The third printing paste to be subsequently printed on the second printing site contains reactive dyes, pastes, dyeing assistants and the like. Examples of the dyeing assistant include alkalis, hydrotropes, anti-reducing agents, and sequestering agents that are catalysts for reactive dyes.

  In the third printing paste, as described above, a reactive dye having a color different from that of the second printing paste is used. Other pastes and dyeing assistants may be the same as the second printing paste. Thus, when the colors of the second and third printing pastes are different, the colors of the front and back symmetrical patterns of the printed cotton fabric are different.

  The reactive dye used in this embodiment is the same as the reactive dye used in the above-mentioned second printing paste. The amount of the reactive dye used is appropriately determined depending on the hue of the desired printed pattern and the dyeing density. These dyes may be used in combination with a plurality of dyes in order to match the required hue.

  As for the paste as a thickening component of the third printing paste, any paste can be used as long as it does not affect the coloring of the reactive dye as in the second printing paste. It is preferable to use a half-emulsion paste which is a mixed paste of sodium alginate and O / W emulsion used in ordinary reactive dye printing.

  In addition, the third printing paste must contain an alkali catalyst of a reactive dye. As described above, the second printing paste may not contain an alkali catalyst, but even in this case, the third printing paste must contain the reactive dye alkali catalyst. In general, sodium carbonate or sodium hydrogen carbonate is used as the alkali catalyst. For example, when using sodium carbonate or sodium hydrogen carbonate, the amount used is about 1.5 to 2.5% by weight based on the third printing paste. Furthermore, various hydrotropes may be contained in the printing paste in order to improve the fixing of the reactive dye.

In the third printing paste of the present embodiment, the reactive dye is appropriately selected and blended according to the required color and density, and the half emulsion paste used in normal reactive dye printing is used as a paste. As an alkali catalyst, 2% by weight of sodium hydrogen carbonate was used with respect to the third printing paste. In addition, 10% by weight of urea was used as a hydrotrope with respect to the third printing paste.
(B) Printing process In the printing process in this embodiment, a normal roller printing machine is used. In this roller printing machine, a cotton fabric is continuously run in the longitudinal direction, and a portion to be printed is fixed to a large drum bed and printing paste is printed on the cotton fabric. The cotton fabric after printing is dried by a drier installed at the rear of the roller printing machine.

  The roller printing machine used in the present embodiment employs a printing method using an intaglio engraved on a copper roll, and it is easy to control the printing amount of the printing paste. In addition, fine line patterns and pattern outlines can be clearly printed, which is also effective for printing continuous patterns such as stripe patterns.

  Here, the printing process of this embodiment will be described in detail with reference to the drawings. 1 to 4 show cross sections of the cotton fabric before printing and after the first, second, and third printing processes in the printing process of the present embodiment, respectively. FIG. 1 schematically shows a cross section of a cotton fabric before printing. The cotton fabric 10 is fixed to a drum bed 20 of a roller printing machine (not shown). Here, among the front and back surfaces of the cotton fabric 10, the surface not fixed to the drum bed 20 is referred to as the front surface 11, and the surface fixed to the drum bed 20 is referred to as the back surface 12.

a. First Printing Process In the first printing process, the first printing paste is printed from the surface 11 side of the cotton fabric 10. FIG. 2 schematically shows a cross section of the cotton fabric after the first printing process. Here, in the first printing part 30, the first printing paste 31 is printed so as to penetrate from the front surface 11 side to the back surface 12 side. On the other hand, the printing paste is not yet printed on the second printing portion 40. In FIG. 2, the arrow indicates the printing direction of the first printing paste 31. The first printing paste 31 printed on the first printing site 30 is a white dyeing paste or a coloring dyeing paste.

b. Second Printing Process In the second printing process, the second printing paste is printed from the surface 11 side of the cotton fabric 10. FIG. 3 schematically shows a cross section of the cotton fabric after the second printing step. In the second printing process, the second printing paste 41 is printed on the first printing site 30 together with the second printing site 40. In FIG. 3, the arrow indicates the printing direction of the second printing paste 41. The second printing paste 41 printed on the first printing site 30 and the second printing site 40 is a printing paste containing a reactive dye.

  Here, in the first printing part 30, only the first printing paste 31 is printed on the back surface 12 side, but the first printing paste 31 and the second printing paste 41 are mixed on the front surface 11 side. It is printed in the form. This is because the second printing paste 41 printed later cannot penetrate the back surface 12 due to the presence of the first printing paste 31 previously printed. On the other hand, in the second printing portion 40, the second printing paste 41 is printed so as to penetrate from the front surface 11 side to the back surface 12 side.

c. Third Printing Process In the third printing process, the third printing paste is printed from the surface 11 side of the cotton fabric 10. FIG. 4 schematically shows a cross section of the cotton fabric after the third printing step. In the third printing process, the third printing paste 42 is printed on the first printing portion 30 together with the second printing portion 40. In FIG. 4, the arrow indicates the printing direction of the third printing paste 42. The third printing paste 42 printed on the first printing portion 30 and the second printing portion 40 is a printing paste containing a reactive dye having a hue different from that of the second printing paste 41.

  Here, in the first printing part 30, only the first printing paste 31 is printed on the back surface 12 side, and the first printing paste 31 and the second printing paste are provided in the intermediate part between the front surface 11 and the back surface 12. 41 is mixed and printed on the surface 11 side in a mixed form of the first printing paste 31, the second printing paste 41 and the third printing paste 42. This is because the third printing paste 42 printed last can not penetrate to the center due to the presence of the first printing paste 31 and the second printing paste 41 previously printed. This is because the state of the first printing portion 30 of 3 is pushed down as it is.

On the other hand, in the second printing portion 40, only the second printing paste 41 is printed on the back surface 12 side, but the second printing paste 41 and the third printing paste 42 are mixed on the front surface 11 side. It is imprinted in the form. This is because the third printing paste 42 printed later cannot penetrate the back surface 12 due to the presence of the second printing paste 41 previously printed.
(C) Fixing process In the subsequent fixing process, the reactive dye in the second and third printing pastes is fixed to the cotton fabric at the second printing site after the printing process. The reactive dye is usually fixed by steaming. In this steaming heat treatment, the cotton fabric is generally treated in a normal pressure saturated water vapor at about 100 to 130 ° C. or in a normal pressure heated water vapor for 1 to 20 minutes, preferably 3 to 10 minutes. In this embodiment, it processed for 8 minutes in the normal-pressure heating water vapor | steam of 103 degreeC using the continuous normal-pressure steam-heater.

  Here, when using a white dyeing paste as the first printing paste, it is only necessary to perform the above steaming heat treatment, but when using a coloring dyeing paste containing a pigment in the first printing paste. Needs to fix the pigment to the cotton fabric. Therefore, dry heat treatment for fixing the binder is performed in addition to steaming heat treatment in the fixing step after printing. In this dry heat treatment, the cotton fabric is generally treated in heated air at about 130 to 180 ° C. for 30 seconds to 10 minutes, preferably 1 to 5 minutes. In this embodiment, it was performed at 160 ° C. for 2 minutes using a continuous baking apparatus.

  As a result of this fixing step, the alkaline catalyst contained in the third printing paste 42 is neutralized by the acid contained in the first printing paste 31 at the first printing portion 30, and the second printing paste 41 and the third printing paste 41 The reactive dye contained in the printing paste 42 cannot develop color. Therefore, when the first printing paste 31 is a white dyeing paste, the first printing part 30 is white, and when the first printing paste 31 is a colored dyeing paste, the first mark is printed. The printing part 30 becomes the color of the pigment contained in the first printing paste 31.

  On the other hand, in the second printing part 40, the color of the surface 11 is a mixed color of the reactive dye color contained in the second printing paste 41 and the reactive dye color contained in the third printing paste 42. It becomes. On the other hand, the color of the back surface 12 is the color of the reactive dye contained in the second printing paste 41.

As described above, in the present embodiment, the third printing paste contains the reactive dye and the alkali catalyst, but the second printing paste contains only the reactive dye and contains the alkaline catalyst. Absent. However, in this fixing step, the alkali catalyst contained in the third printing paste migrates into the second printing paste, and the reactive dye contained in the second printing paste can be reacted. At this time, it is considered that when the third printing paste contains hydro and a rope agent, it effectively acts on migration of the alkali catalyst.
(D) Washing process In the subsequent washing process, the cotton fabric after the fixing process is washed. In general, the reactive dye is washed with cold water after removing a rough paste and the like, and then sufficiently washed with warm water of about 80 to 100 ° C. In some cases, a detergent or a detergent such as sodium tripolyphosphate may be used in combination. In this embodiment, it was sufficiently washed with cold water and warm water (90 ° C.) with a continuous spread washer. The washed cotton fabric was dehydrated and dried to obtain a printed cotton fabric.

Hereinafter, in the printing method according to the present embodiment, printed cotton fabrics of the following examples were prepared. The cotton fabrics used were those that had been desizing, scouring, bleaching, and mercerizing processed in the usual manner.
Example 1:
As the cotton fabric, a 60th-law loan fabric (woven standard; 60 × 60/90 × 88) was used. The thickness of the 60th lone woven fabric was 180 micrometers.

  For the first printing paste, the above white anti-resisting paste was used. In the second printing paste, 7% by weight of Cibacron Red P-6B 33% liq. (C.I. Reactive Red 218, Ciba Specialty Chemicals Co., Ltd.) was used as a red reactive dye. In the third printing paste, 7% by weight of Cibacron Yellow P-6GS 33% liq. (C. I. Reactive Yellow 95, Ciba Specialty Chemicals Co., Ltd.) was used as a yellow reactive dye.

 In the printing by the roller printing machine, first, a vertical stripe pattern having a width of 0.5 mm is printed with the first printing paste, then the entire surface is printed with the red second printing paste, and further with the yellow third printing paste. Imprinted on the entire surface.

After fixing, washing, and drying, the 60th lone woven fabric has an orange ground color mixed with red of the second printing paste and yellow of the third printing paste on the front side. It was printed. On the other hand, a white stripe pattern having a width of 0.5 mm was printed on the back side of the red ground color of the second printing paste. In addition, the white stripe pattern having a width of 0.5 mm formed a symmetrical pattern. An outline of the printed cotton fabric of Example 1 is shown in FIG. In FIG. 2, a stripe pattern 13 symmetric with respect to the front and back is printed on the front surface 11 and the back surface 12 of the cotton fabric 10.
Example 2:
As a cotton fabric, a 40th French twill fabric (woven standard; 40 × 40/100 × 70) was used. The thickness of this 40th French twill fabric was 245 micrometers.

  For the first printing paste, the above white anti-resisting paste was used. In the second printing paste, 7.5% by weight of Kayacion Turquois Blue P-3GF 33% liq. (C.I.No. unpublished, Nippon Kayaku Co., Ltd.) was used as a reactive dye of turkis blue. In the third printing paste, 7% by weight of Cibacron Yellow P-6GS 33% liq. (C. I. Reactive Yellow 95, Ciba Specialty Chemicals Co., Ltd.) was used as a yellow reactive dye.

 In the printing with the roller printing machine, first, a small polka dot pattern with a diameter of 1.5 mm is printed with the first printing paste, then the entire surface is printed with the second printing paste of turkis blue, and further the third yellow printing. The entire surface was printed with glue.

After fixing, washing and drying, the 40th French twill fabric has a clear green ground color with 1.5mm diameter white mixed with turkis blue of the second printing paste and yellow of the third printing paste on the front side. The small polka dot pattern was printed. On the other hand, a white small polka dot pattern with a diameter of 1.5 mm was printed on the back surface of turkis blue as the second printing paste. In addition, the white small polka dot pattern with a diameter of 1.5 mm formed a symmetrical pattern.
Example 3:
As the cotton fabric, a 30th sheeting fabric (woven standard; 30 × 30/68 × 68) was used. The thickness of the 30th sheeting fabric was 300 micrometers.

  For the first printing paste, the above white anti-resisting paste was used. In the second printing paste, 7% by weight of Cibacron Yellow P-6GS 33% liq. (C.I. Reactive Yellow 95, Ciba Specialty Chemicals Co., Ltd.) was used as a yellow reactive dye. In the third printing paste, 7.5% by weight of Kayacion Turquois Blue P-3GF 33% liq. (C.I.No. unpublished, Nippon Kayaku Co., Ltd.) was used as a reactive dye of turkis blue.

 In the printing by the roller printing machine, first, a vertical stripe pattern with a width of 1.5 mm is printed with the first printing paste, followed by printing on the entire surface with the yellow second printing paste, and further with the third printing of Turkis blue. The entire surface was printed with glue.

The 30th sheeting fabric after fixing, washing and drying has a white surface of 1.5mm width on a clear green ground color in which yellow of the second printing paste and turkis blue of the third printing paste are mixed on the front side. A vertical stripe pattern was printed. On the other hand, a white vertical stripe pattern with a width of 1.5 mm was printed on the yellow background of the second printing paste on the back surface. In addition, the white vertical stripe pattern with a width of 1.5 mm constituted a symmetrical pattern.
Example 4:
As the cotton fabric, 30th fine fabric fabric (woven standard; 30 × 30/69 × 52) was used. The thickness of the 30th fine fabric was 280 micrometers.

  For the first printing paste, the above white anti-resisting paste was used. In the second printing paste, 7% by weight of Cibacron Red P-6B 33% liq. (C.I. Reactive Red 218, Ciba Specialty Chemicals Co., Ltd.) was used as a red reactive dye. In the third printing paste, 8% by weight of Cibacron Blue P-3R 40% liq. (C. I. Reactive Blue 49, Ciba Specialty Chemicals Co., Ltd.) was used as a blue reactive dye.

 In the printing with a roller printing machine, first, a 3 mm diameter polka dot pattern is printed with the first printing paste, then the entire surface is printed with the red second printing paste, and then the entire surface is printed with the blue third printing paste. I stamped it.

The 30th fine fabric after fixing, washing and drying is printed on the front side with a white polka dot pattern with a diameter of 3mm on a purple ground color in which the red of the second printing paste and the blue of the third printing paste are mixed. It was. On the other hand, a white polka dot pattern with a diameter of 3 mm was printed on the back side of the red ground color of the second printing paste. Further, the white polka dot pattern with a diameter of 3 mm constituted a symmetrical pattern.
Example 5:
As the cotton fabric, an 80-counter woven fabric (woven standard; 80 × 80/90 × 88) was used. The thickness of the 80th lone woven fabric was 150 micrometers.

  For the first printing paste, the above white anti-resisting paste was used. In the second printing paste, 7% by weight of Cibacron Red P-6B 33% liq. (C. I. Reactive Red 218, Ciba Specialty Chemicals Co., Ltd.) was used as a red reactive dye. In the third printing paste, 7% by weight of Cibacron Yellow P-6GS 33% liq. (C. I. Reactive Yellow 95, Ciba Specialty Chemicals Co., Ltd.) was used as a yellow reactive dye.

  In the printing with a roller printing machine, first, a 15 mm diameter polka dot pattern is printed with the first printing paste, then the entire surface is printed with the red second printing paste, and then the entire surface is printed with the yellow third printing paste. I stamped it.

After fixing, washing, and drying, the 80th knitted fabric is printed on the front side with a white polka dot pattern with a 15mm diameter on an orange ground color, which is a mixture of the second printing paste red and the third printing paste yellow. It was. On the other hand, a white polka dot pattern with a diameter of 15 mm was printed on the back side of the red ground color of the second printing paste. Further, this white polka dot pattern with a diameter of 15 mm constituted a symmetrical pattern.
Example 6:
As the cotton fabric, a 30th-numbered dobby fabric (woven standard; 30 × 30/105 × 70) was used. The thickness of the 30th dobby fabric was 290 micrometers.

  For the first printing paste, a colored anti-staining paste containing 3% by weight of Ryudye-W Yellow FRT (C.I.No. unpublished, DIC Corporation) was used as a yellow pigment. In the second printing paste, 8% by weight of Cibacron Blue P-3R 40% liq. (C.I. Reactive Blue 49, Ciba Specialty Chemicals Co., Ltd.) was used as a blue reactive dye. In the third printing paste, 7% by weight of Cibacron Red P-6B 33% liq. (C. I. Reactive Red 218, Ciba Specialty Chemicals Co., Ltd.) was used as a red reactive dye.

  For printing with a roller printing machine, first, a 1 mm contour line of the petal pattern is printed with the first printing paste, then the entire surface is printed with the blue second printing paste, and then the entire surface is printed with the red third printing paste. Imprinted on.

  In Example 6, since the colored antifouling paste containing the pigment is used, it is necessary to fix the pigment to the cotton fabric. Therefore, in addition to the steaming heat treatment in the fixing step after printing, a dry heat treatment for fixing the binder was performed at 160 ° C. for 2 minutes.

  The 30th dobby fabric after fixing, washing and drying has a yellow outline with a petal pattern of 1 mm in width on the front side and a purple ground color in which the blue of the second printing paste and the red of the third printing paste are mixed. It was printed. On the other hand, the petal pattern was printed with a yellow outline of 1 mm width on the blue background of the second printing paste. Moreover, the petal pattern drawn with the yellow outline of 1 mm width comprised a front-back symmetrical pattern.

  As described above, each of the printed cotton fabrics of Examples 1 to 6 was clearly printed with a symmetrical pattern. The stripe pattern, the polka dot pattern, and the contour line are white or yellow and have the same color on both sides, but the ground color portion was printed with different colors on the front and back sides. Therefore, in the said embodiment, the printed cotton fabric which has a clear pattern from which a color differs on both front and back can be provided.

In implementing the present invention, not only the above-described embodiment but also the following various modifications can be mentioned.
(1) In the above embodiment, a roller printing machine is used in the printing process. However, the present invention is not limited to this, and a flat screen, a rotary screen, or the like may be used.
(2) In the above embodiment, the first and second printing parts are provided in one set of colors, but these first and second printing parts are different colors on the same printed cotton fabric. A plurality of locations may be provided.
(3) In the above embodiment, a cotton fabric is used. However, the present invention is not limited to this. In addition to cotton, cellulosic fibers such as hemp, rayon, cupra, polynosic, and solvent-spun cellulose are used. There may be. Moreover, you may make it use the textile fabric or knitted fabric which consists of the single use of these cellulosic fibers or these composite use, or the composite use of these and another fiber.

  DESCRIPTION OF SYMBOLS 10 ... Cotton fabric, 11 ... Front surface, 12 ... Back surface, 20 ... Drum bed, 30 ... First printing part, 31 ... First printing paste, 40 ... Second printing part, 41 ... Second printing paste, 42 ... First 3 printing paste.

Claims (6)

A textile fabric knitted fabric having a symmetrical pattern on the front and back surfaces,
The pattern comprises first and second printing parts penetrating both front and back sides,
The first printing part has the same achromatic color or the same chromatic color over both front and back sides,
The second printing part has a chromatic color in which the color of the front surface and the color of the back surface are different,
The printed woven or knitted fabric characterized in that, in the second printing portion, the color of one of the front and back surfaces is a mixed color of the color of the other surface and a color different from this color.   2. The first printing part is provided with a fine line or contour line having a line width of 0.3 mm to 3 mm, or a small handle having a minor axis of 0.3 mm to 3 mm. Printed woven or knitted fabric described in 1.   3. The textile printing knitted fabric according to claim 1 or 2, comprising a woven or knitted fabric mainly composed of cellulosic fibers, wherein the woven or knitted fabric has a thickness of 100 micrometers or more and 300 micrometers or less. A printing method for imparting a symmetrical pattern to the front and back surfaces of a woven or knitted fabric mainly composed of cellulosic fibers,
A first printing step of printing the first printing paste on the first printing site from one of the front and back surfaces of the woven or knitted fabric;
Subsequent to the first printing step, the second printing paste is printed on the second printing portion while overlapping the first printing portion from the same surface as the printing surface of the first printing step. 2 stamping process,
Subsequent to the second printing step, the third printing paste is printed from the same surface as the printing surface of the second printing step so as to overlap the first printing portion and the second printing portion. With three stamping processes,
The second printing paste and the third printing paste contain reactive dyes having different colors,
The third printing paste contains an alkali catalyst,
The printing method according to claim 1, wherein the first printing paste contains an acid or an acid generator for neutralizing the alkali catalyst.   The printing method according to claim 4, wherein the second printing paste contains an alkali catalyst.   6. The printing method according to claim 4, wherein printing is performed in the first to third printing steps using a roller printing machine.

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