JP2006219809A - Method for producing cloth on which three-dimensional pattern is formed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a cloth on which a fine three-dimensional pattern is formed, by clearly separating a fiber discharge processed area from an unprocessed area of fiber discharge around the processed area, independently of a kind of a fiber used in the cloth, a fineness of the fiber, a fineness of yarn, a manner in which the yarn is twisted, and a procedure in which the cloth is woven or knitted. <P>SOLUTION: This method for producing the cloth on which the three-dimensional pattern is formed includes a process for furnishing the fiber discharge processed area of the cloth with an ink containing an alkaline fiber discharging agent by means of an inkjet system and a process for furnishing an area other than the fiber discharge processed area with an ink containing a salt of which the pH is 3.0 to 8.0 when dissolved in water by means of the inkjet system. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for producing a three-dimensional pattern forming fabric, and more particularly, to a method for producing a three-dimensional pattern forming fabric obtained by applying a discharging agent that dissolves, shrinks, or decomposes fibers using an inkjet method.

  In ink-jet textile printing, a processing method of applying an ink agent, dissolving, shrinking, or decomposing fibers constituting a fabric to form a three-dimensional pattern having irregularities on the fabric, and a composite using two or more types of fibers There is known a processing method in which only one type of fiber is dissolved, shrunk or decomposed in a material to express a so-called opal-like transparency on the fabric. These processing methods have various methods because the chemicals and processing conditions to be used differ depending on various kinds of conditions such as the type of fiber to be melted, shrunk or decomposed and the configuration of the yarn or fabric. For example, Patent Document 1 discloses a method using a fiber shrinking agent.

  Among them, in particular, processing using fiber decomposition by an agent containing an alkali as a main component is generally performed on a fabric made of polyester fibers (including cationic dyeable polyester fibers, hereinafter referred to as PET fibers). Widely used. Typical processed fabrics for PET fibers include pile fabrics of PET fibers and composite materials. The former decomposes and removes the napped fibers to form a napped fabric with a concavo-convex surface, and the latter is a PET. Only the system fibers are dissolved, shrunk or decomposed, leaving other fibers to form an opal pattern.

  Examples of the alkali-based agent include alkali salts typified by sodium hydroxide and potassium hydroxide, and solutions containing the same, and at the same time, alkali hydrolysis reaction accelerators such as cationic surfactants ( (Weight loss accelerator) may be used.

  As a specific processing method, after applying the alkali-based agent and, if necessary, a fiber decomposing agent including a weight loss accelerator to a region to be subjected to a discharge process on a PET fiber fabric, a steamer is used. The fibers in the region are removed by heat treatment and then washing and weight reduction. As a result, only the fibers in the area where the fiber decomposing agent is applied are decomposed and removed on the cloth, and the fibers in the area where the fiber decomposing agent is not applied remain on the cloth. Therefore, the pile cloth or the opal-like pattern having the uneven three-dimensional pattern A composite fabric having a pattern is obtained.

  In addition, according to the inkjet method, for the PET-based fibers in the region where the fiber is not decomposed, the coloring process with the colored ink can be performed simultaneously with the fiber discharging process, so that various patterns are expressed.

  By the way, the problem at the time of applying the ink-type fiber discharging agent to the fabric using the ink jet method is not limited to the fiber discharging process but is a general problem in the textile printing field using the ink jet method. It is easy for ink to bleed. When the ink-dissipated fiber discharging agent is applied onto the fabric by an ink jet method, the applied fiber discharging agent bleeds in the plane direction in the fiber direction or tissue direction of the fabric together with the ink solvent. As a result, the area to be removed is easier to expand than the target area.

  The degree of bleeding is caused by various conditions such as the viscosity of the solvent used when the fiber discharging agent is converted into ink. Therefore, the degree of bleeding tends to decrease by increasing the viscosity of the ink. However, in the case of the inkjet method, there is an upper limit on the viscosity of the ink depending on the discharge conditions of each inkjet printing machine. It is also caused by the type of fiber constituting the fabric, the thickness of the single yarn, the thickness of the yarn, how the yarn is twisted, and how the yarn is woven or knitted. It is possible to improve to some extent by changing. However, when handling a wide variety of fabrics, it is very difficult to find an optimum condition in consideration of bleeding each time, and it is very difficult to finely suppress the bleeding range. Furthermore, the high temperature steam at the time of heat treatment with the steamer may contribute to the expansion of the fiber removal processing range, and the range control becomes more difficult. For these reasons, although there are differences depending on the structure of the fabric, the type of yarn used, the processing conditions, the thickness, and the like, it is very difficult to express the finely-extracted pattern by pushing them side by side.

  In addition, when performing color expression using a colored ink on the unexposed portion of the fiber on the fabric at the same time as the fiber discharging process, the dye is discolored or has a concentration due to alkali in the area adjacent to the fiber discharging process portion. Since there is a risk of lowering, it is necessary to use a dye that is resistant to alkali, which is the main component of the fiber removal agent. As described above, when coloring the unprocessed portion of fiber removal, the usable dyes are limited, so that the color expression range is narrowed. Furthermore, at the boundary between the fiber discharging portion and the color expression processing portion using the colored ink, a large amount of ink, that is, the ink containing the fiber discharging agent and the colored ink are applied, which causes bleeding. The amount of ink solvent is also very large. Therefore, there is a problem that the boundary between the fiber-exhaust processed part and the fiber-extracted unprocessed part (color expression processed part) is easily shifted to the region side of the fiber-extracted unprocessed part, and the boundary becomes unclear.

  In the three-dimensional pattern forming technology using the fiber discharging process, the fineness of the three-dimensional pattern is required, and technical development that satisfies this requirement is required.

JP-A-10-298863

  The present invention relates to a fiber discharging region and its surrounding fiber removal regardless of the type, thickness, yarn thickness, yarn twisting method, and weaving or knitting method used in the fabric. It is an object of the present invention to provide a method for producing a fabric in which a fine three-dimensional pattern is formed in which a non-etched region is clearly divided.

  That is, according to the present invention, a step of applying an ink containing an alkaline fiber removal agent to a fiber removal region by an inkjet method on a fabric, and a pH when dissolved in water is 3.0 to 8.0. It is related with the manufacturing method of the three-dimensional pattern formation fabric including the process of providing the ink containing the salt which is this to area | regions other than this fiber discharging process area | region by an inkjet system.

  Furthermore, it is preferable to include the process of providing the ink containing a coloring agent with an inkjet system.

  It is preferable that the alkaline fiber extractant is guanidine carbonate.

  It is preferable that the fabric includes a polyester fiber.

  The present invention also relates to a three-dimensional pattern forming fabric obtained by the manufacturing method described above.

  The present invention relates to a fiber discharging region and its surrounding fiber removal regardless of the type, thickness, yarn thickness, yarn twisting method, and weaving or knitting method used in the fabric. It is possible to provide a method for manufacturing a fabric in which a fine three-dimensional pattern is formed, which is clearly divided from an unetched region.

  In the present invention, the step of applying an ink containing an alkaline fiber removal agent to a fiber removal processing region by an inkjet method on a fabric, and the pH when dissolved in water is 3.0 to 8.0. It is a manufacturing method of the three-dimensional pattern formation fabric including the process of providing the ink containing a salt to areas other than this fiber discharging process area | region by an inkjet system.

  The fabric used in the present invention is not particularly limited as long as it contains fibers that are discharged with an alkaline fiber discharging agent. Above all, because it is excellent in strength, weather resistance and chemical resistance, it can be used in various applications such as sports apparel, fashion apparel, inner apparel, automobile interior materials and advertising curtains. From polyethylene terephthalate etc. It is preferable that the polyester fiber and polyester type fiber, such as a normal pressure type or a high pressure type cationic dyeable polyester fiber, are included. Examples include 100% polyester pile fabric, polyester fiber / nylon fiber composite fabric, and polyester fiber / cotton composite fabric.

  When the polyester fiber is included, the single yarn fineness is preferably 3 dtex or less, and more preferably 2 dtex or less. The lower limit is preferably 0.1 dtex, and more preferably 0.7 dtex. When the single yarn fineness exceeds 3 dtex, it may be difficult to completely disassemble and remove, and this tends to cause problems visually, tactilely or functionally. The total fineness is 170 dtex or less, and preferably 110 dtex or less. The lower limit is preferably 22 dtex, and more preferably 56 dtex. When the total fineness exceeds 170 decitex, the texture of the fabric becomes hard, which may cause variations and defects in the degradation of the polyester fibers.

  In the fabric used in the present invention, the fibers to be discharged are preferably contained in an amount of 25% by weight or more, more preferably 25 to 80% by weight. If less than 25% by weight of fibers are removed, there is a tendency that the three-dimensional pattern cannot be clearly expressed.

  In addition, when using a composite fabric, these dissimilar fibers can be combined by a method such as blending, blending, knitting, knitting or knitting.

  Examples of the fabric used in the present invention include knitted fabrics, woven fabrics, and nonwoven fabrics, but are not particularly limited. Examples of the woven fabric include plain weave, twill weave and satin weave. Examples of the knitted fabric include weft knitting such as flat knitting, rubber knitting, and pearl knitting, warp knitting such as tricot knitting, cord knitting, atlas knitting, chain knitting, and inlay knitting. Among them, a reversible structure in which one side of the fabric is mainly composed of polyester-based fibers and the other side of the fabric is mainly composed of non-extracted fibers in that a variety of three-dimensional patterns can be formed. The knitted fabric is preferable. That is, it is a knitted fabric composed of a layer made of polyester fiber and a layer made of nylon fiber. A known method can be used to form a reversible knitted fabric, and is not limited. However, a plating method (also called splicing knitting) is preferable because it has excellent strength retention and less pilling due to wear such as washing. . As the shape of the fabric, a napped fabric is preferable in that the texture is good. The raised fabric refers to a fabric having a raised fabric in which the ground structure is composed of a woven or knitted fabric or a nonwoven fabric. In addition, since napping is also called a pile, a napping cloth is also called a pile cloth.

  The thickness is preferably 5 mm or less, and more preferably 3 mm or less. As a minimum, it is preferred that it is 0.5 mm, and it is more preferred that it is 1 mm. If the thickness exceeds 5 mm, there will be a variation in the permeability of the ink that removes the fibers, which will be described later, and the fibers will tend to be insufficiently removed. If it is thinner than 0.5 mm, it tends to be difficult to clearly express the portion with the three-dimensional pattern visually and tactilely.

  The alkaline fiber discharging agent is preferably an alkali exhibiting a pH of 10 or more in the state of an aqueous solution. When the pH is lower than 10, the fiber discharging process is not performed, or the degree of processing is very weak and tends to be in an incomplete processing state. Specific examples include weak guanidine acid salts, phenols, alcohols, alkali metal hydroxides such as sodium hydroxide or potassium hydroxide, and alkaline earth metal hydroxides. Of these, sodium hydroxide, potassium hydroxide, or guanidine weak acid salt is preferable, and guanidine weak acid salt is preferable because it has a large unevenness effect and is excellent in terms of environment and safety. Among them, compared to other strong alkalis such as caustic soda, the pH of the aqueous solution is as low as 10 to 13, the work safety and the device are not easily corroded, and the effect on the dye used when coloring the fiber. In particular, guanidine carbonate is preferable because it has a small amount. The fiber is decomposed by this guanidine carbonate. As a reason, it is supposed that the guanidine carbonate is decomposed into urea and ammonia in the heat treatment step performed after the application of guanidine carbonate, so that it changes into a strong alkali. This is probably because of this.

  In addition, the fiber discharging agent is dissolved in water and subjected to ink treatment in that stable discharge can be performed for a long time. The concentration of the fiber discharging agent is preferably in the range of 10 to 35% by weight, and more preferably in the range of 15 to 30% by weight. If the amount is less than 10% by weight, there is a tendency that sufficient unevenness effect cannot be obtained. Conversely, if the amount exceeds 35% by weight, the fiber removal agent is close to the solubility limit in water, and precipitates are generated. It causes nozzle clogging and tends to make it difficult to discharge stably for a long time.

  An ink containing a salt having a pH of 3.0 to 8.0 when dissolved in water used in the present invention (hereinafter referred to as a fiber discharge inhibiting ink) neutralizes the alkaline fiber discharge agent. An acidic substance or an acidic ion to be supplied is provided, and the discharging by the fiber discharging agent is suppressed. The salt contained in the fiber discharge inhibiting ink has a pH in the range of 3.0 to 8.0 when dissolved in water, and is neutral or weakly acidic. At this time, the salt concentration when used as an ink, specifically, as described later, the pH is preferably in the range of 3.0 to 8.0 at a concentration of preferably 10 to 50% by weight. More preferably, the pH at a concentration of 10% by weight is in the range of 3.0 to 8.0. Examples of the salt include ammonium sulfate, magnesium sulfate, and sodium chloride. Especially, the salt which produces | generates the anion of strong acid, such as a sulfate ion, a nitrate ion, or a chlorine ion, when ionizing is preferable, and ammonium sulfate and magnesium sulfate are preferable. Furthermore, ammonium sulfate is preferable. The pH is preferably 4.5 to 7.5. If the pH is less than 3.0, the surface of the fiber is liable to be deteriorated and the equipment may be damaged. If the pH is more than 8.0, a sufficient fiber discharge inhibiting effect cannot be obtained.

  The concentration of the salt is preferably in the range of 10 to 50% by weight, and more preferably in the range of 20 to 40% by weight. If the amount is less than 10% by weight, it tends to be difficult to obtain a sufficient fiber discharge suppression effect. If the amount exceeds 50% by weight, the limit is close to the solubility in water. This tends to make it difficult to discharge stably for a long time.

  The viscosity of the ink containing the fiber discharging agent (hereinafter referred to as fiber discharging ink) and the fiber discharging inhibiting ink is preferably 1 to 10 cps, more preferably 1 to 5 cps at 25 ° C. . If it is less than 1 cps, the ejected ink droplets are split during the flight, and the sharpness of the three-dimensional pattern tends to be inferior. If it exceeds 10 cps, the ink tends to be difficult to eject from the nozzle due to high viscosity.

  It is preferable to contain urea in the fiber discharging ink and the fiber discharging inhibiting ink in order to stably dissolve in water. Urea is optimal because it has little influence on viscosity and surface tension, which are important for inkjet inks. The urea content is preferably in the range of 0.1 to 10% by weight, and more preferably in the range of 0.5 to 5% by weight. When urea is less than 0.1% by weight, the effect as a solubilizer is poor, and it tends to cause nozzle clogging. When it exceeds 10% by weight, the original three-dimensional pattern of the fabric becomes insufficient. There is a tendency.

  Furthermore, these inks may contain at least one selected from the group consisting of polyhydric alcohols, polyhydric alcohol derivatives, and surfactants to which ethylene oxide is added from the viewpoint of preventing nozzle clogging. desirable. The content is preferably in the range of 0.1 to 10% by weight, more preferably in the range of 0.5 to 5% by weight. If the amount is less than 0.1% by weight, the effect of preventing air clogging of the nozzle tends to be low, and the ink tends to cause air clogging. If the amount exceeds 10% by weight, the ink becomes highly viscous, and the ink from the nozzle Dispensing tends to be difficult.

  Examples of the polyhydric alcohol or polyhydric alcohol derivative usable in the present invention include glycerin, diethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol, triethylene glycol dimethyl ether, triethylene glycol monomethyl ether, propylene glycol, propylene glycol. Examples thereof include monomethyl ether, dipropylene glycol, tripropylene glycol, trimethylene glycol, polyethylene glycol, and polyethylene glycol dimethyl ether.

  The surfactant that can be used in the present invention is preferably an ethylene oxide adduct of a nonionic or cationic surfactant. This is because anionic surfactants may have problems in terms of compatibility with the fiber extractant and foaming properties.

  Examples of the nonionic surfactant to which ethylene oxide is added include ether type nonionic surfactants such as polyoxyethylene alkyl ether, ether ester type nonionic surfactants such as polyoxyethylene glycerin fatty acid ester, and polyethylene. Examples thereof include ester type nonionic surfactants such as glycol fatty acid esters.

  Examples of the cationic surfactant to which ethylene oxide is added include ethylene oxide adducts such as aliphatic amine salts and aliphatic quaternary ammonium salts.

  Among these, propylene glycol is more preferable from the viewpoint of excellent work safety. In addition, an ethylene oxide adduct of an aliphatic quaternary ammonium salt is more preferable in terms of high stability in an alkaline aqueous solution.

  The surfactant is particularly preferably a low viscosity having a number average molecular weight of 5000 or less. When the number average molecular weight is 5000 or more, the viscosity of the ink increases and the ink ejection stability tends to be lacking.

  In addition to the fiber discharging ink and the fiber discharging inhibiting ink, a drying inhibitor, a preservative, a water-soluble pigment, and the like can be added as necessary.

  The fiber discharging ink and the fiber discharging inhibiting ink are applied to the fabric by an ink jet method. That is, a step of applying an ink containing an alkaline fiber discharging agent to a fiber discharging region by an inkjet method on a fabric, and a salt having a pH of 3.0 to 8.0 when dissolved in water. A step of applying the ink to the region other than the fiber-exhaust processed region by an ink jet method.

  By using the inkjet method, the depth and width of the unevenness can be freely adjusted. In addition, a precise three-dimensional pattern at the level of one pixel can be freely expressed without restrictions on the pattern as in the printing type. Furthermore, since the depth of the unevenness can be gradually changed, it is also possible to express a gradation pattern due to the unevenness in addition to the expression range that is possible with the conventional roll or screen system. In addition to time, cost, and workability, a large amount of drainage is not produced, so that it can be said that it is superior to the conventional method in terms of environment.

  Further, the fiber discharge ink is applied to the region where the fiber is desired to be discharged on the fabric, and the fiber discharge inhibiting ink is applied to the other region where the fiber is not discharged. Even if bleeding occurs on the fabric through the fiber, the fiber discharging is invalidated by the fiber discharging inhibiting ink. This is because the discharging action by the fiber discharging ink proceeds in a heat treatment step to be described later, and at that time, the acid substance that neutralizes the alkali contained in the fiber discharging ink from the fiber discharging inhibiting ink at the same time. Or by the provision of acidic ions. As a result, the fiber-exhaust processed region and the surrounding fiber-extracted unprocessed region are clearly divided, so that the pattern of the unevenness is clear and a fine three-dimensional pattern can be formed.

  Further, as described above, the fiber discharging ink and the fiber discharging inhibiting ink may be applied to the fabric before the heat treatment step, and the order of the applying steps is not particularly limited. After the step of applying the fiber discharging ink to the fiber discharging region by the ink jet method, the step of applying the fiber discharging inhibiting ink to the region other than the fiber discharging region by the ink jet method may be performed. And vice versa. Moreover, you may carry out simultaneously. In particular, it is preferable to perform the fiber discharging ink applying step and the fiber discharging suppressing ink applying step at the same time in that the application region of the fiber discharging ink and the fiber discharging suppressing ink can be controlled more precisely. Specifically, it is preferable to prepare an ink set including the fiber discharging ink and the fiber discharging inhibiting ink, and appropriately select and print the ink according to the presence or absence of unevenness.

The application amount of the fibers the fiber-decomposed ink is preferably in the range of 1 to 50 g / m ^2, more preferably 5 to 30 g / m ^2. When the applied amount is less than 1 g / m ² , it is difficult to obtain a sufficient unevenness effect. Conversely, when the applied amount exceeds 50 g / m ² , the amount is more than necessary, so that the cost tends to increase.

The application amount of the fiber fiber-decomposed inhibiting ink is preferably in the range of 1 to 30 g / m ^2, more preferably 10 to 20 g / m ^2. When the applied amount is less than 1 g / m ² , there is a tendency that a sufficient fiber discharge inhibiting effect cannot be obtained, and when it exceeds 30 g / m ² , the cost tends to increase.

  The fiber discharge inhibiting ink is preferably applied to the entire region other than the fiber discharge processing region (hereinafter also referred to as a region not subjected to fiber discharge processing). In the case where the applied amount is suppressed, a region having a width of at least 3 mm from the boundary to the region not subjected to the fiber discharging process over the entire boundary line between the fiber discharging region and the region not subjected to the fiber discharging process. It is preferable to give as. Moreover, when coloring ink is applied as will be described later, and coloring ink is applied to a region not subjected to fiber discharging, it is preferably applied to the entire region to which the coloring ink is applied. The degree varies depending on the colorant used and the concentration of the colorant used, but the color density may vary depending on the presence or absence of the fiber discharge inhibiting ink. In the case where the applied amount is suppressed, a region having a width of at least 5 mm from the boundary to the region not subjected to the fiber discharging process over the entire length of the boundary line between the fiber discharging region and the region not subjected to the fiber discharging process. It is preferable to give as.

  In addition, it is preferable to further include a step of applying an ink containing a colorant (hereinafter referred to as a colored ink) by an ink jet method in that more various patterns can be expressed. The colored ink may be selected according to the type of fiber to be colored.

  For example, as a colored ink of polyester fiber, an ink in which a disperse dye excellent in fastness, sharpness and color developability is dispersed in water can be mainly used. The type of the disperse dye is not particularly limited, and examples thereof include those having an anthraquinone, azo, or quinurophthalone structure in the dye matrix. In addition, when a pigment-dispersed ink or a cationic dyeable polyester fiber is used, an ink in which a cationic dye is dissolved or dispersed in water can be used.

  As the colored ink of nylon fiber, an ink in which a reactive dye, an acid dye or a metal complex dye is dissolved in water can be used. The reactive dye is preferably a reactive dye having at least one selected from a monochlorotriazine group, a monofluorotriazine group, a difluoromonochloropyrimidine group, a trichloropyrimidine group, and the like as a reactive group. Reactive dyes having other reactive groups are prone to hydrolysis under an alkaline atmosphere, and when mixed with ink containing an alkaline fiber removal agent on the fabric, the reactive groups decompose and give off to other types of fibers. There is a high possibility that the coloring density is lowered.

  As a colored ink for cotton fibers, an ink in which a reactive dye, an acid dye or a metal complex salt dye is dissolved in water can be used.

  In addition, the above-mentioned fiber discharge inhibiting ink is also prone to discoloration due to destruction of the dye base by the alkaline fiber discharge agent. For example, the effect of protecting a dye group having a diazo structure can be obtained. It is also possible.

  The colored ink is a set of inks dissolved or dispersed in water at various density levels of various colors, and is appropriately selected and used according to the hue and density of the pattern portion. Therefore, the color is not particularly limited. A material having at least four colors obtained by adding black to three primary colors of yellow, magenta, and cyan is general-purpose, but is not limited thereto. Similarly, the content of the coloring dye is not particularly limited, but is preferably 0.1 to 25% by weight with respect to the colored ink in consideration of practicality, storage stability, and ejection stability. When the pigment content is lower than 0.1% by weight, depending on the density of the ground color, the density of the colored ink is too low to make sense. If it exceeds 25% by weight, the ink tends to have poor ejection stability due to high viscosity or poor solubility.

But it is not limited to the grant amount particularly preferably ^{1~50g / m 2, 5~30g / m} 2 is more preferable. When the applied amount is less than 1 g / m ² , there is a tendency that a faint defect is likely to occur, and when it exceeds 50 g / m ² , blurring occurs and the image tends to become unclear.

  Any of the colored inks can contain a drying inhibitor, an antiseptic, a viscosity modifier, an ultraviolet absorber, and the like, if necessary.

  Moreover, the said colored ink should just be provided to the fabric before the heat treatment process, and the order of the application process is not particularly limited. After the step of applying the fiber discharging ink to the fiber discharging region by the ink jet method, the step of applying the colored ink by the ink jet method may be performed, or vice versa. Moreover, you may carry out simultaneously. Further, the order of the fiber discharging inhibiting ink application process is not limited in the same manner. Among them, the fiber discharge ink application process, the fiber discharge suppression ink application process, and the color ink application process are provided in that the fiber discharge ink, the fiber discharge suppression ink, and the colored ink application region can be controlled more precisely. Are preferably performed simultaneously. Specifically, an ink set including the fiber discharging ink, the fiber discharging inhibiting ink, and the color ink is prepared, and the ink is appropriately selected according to the presence / absence of unevenness, the hue and density of the pattern of the concave and convex portions. It is preferable to print. Further, when printing on a composite fabric, a variety of patterns can be expressed by using colored inks that can color various fibers.

  Ink jet printing apparatus used in the present invention prevents thermal degradation of the fiber removal agent and hydrolysis due to heating of the reactive group of the reactive dye when a reactive dye is used as the coloring ink. There is no particular limitation as long as the method does not heat the ink. For example, any of a continuous method such as a charge modulation method, a charge ejection method, a micro dot method and an ink mist method, an on-demand method such as a piezo conversion method and an electrostatic suction method can be adopted. Among them, the piezo method is preferable because it is excellent in stability of ink discharge amount and continuous discharge property and can be manufactured at a relatively low cost.

  Here, it is preferable to include a step of forming an ink receiving layer on the fabric before the step of applying the fiber discharging ink or the like to the fabric by an inkjet method. The ink receiving layer thus formed instantaneously receives the ink ejected from the nozzle and appropriately retains it, thereby preventing bleeding of the fiber discharging ink and the like, and obtaining a clearer three-dimensional pattern processing.

  The ink receiving layer is usually formed of an ink receiving agent mainly composed of a water-soluble polymer. Examples of the water-soluble polymer include sodium alginate, methyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, starch, guar gum, polyvinyl alcohol and polyacrylic acid. Two or more of these may be used in combination. Of these, carboxymethyl cellulose is preferable because it is excellent in chemical resistance and alkali resistance, and is low in price and fluidity. The ink receiving layer can contain a reduction inhibitor, a surfactant, a preservative, a light resistance improver, and the like, if necessary.

The ink receiving agent is preferably applied in an amount of 1 to 20 g / m ^{2 in} terms of solid content, and more preferably ² to 10 g / m ² . If the applied amount is less than 1 g / m ² , the ink receiving ability is inferior, so that the ink tends to bleed or fall through, and if it exceeds 20 g / m ² , the fabric becomes hard, so that it is conveyed by an inkjet printer. Tending to be poor, and the acceptor tends to fall off the fabric during handling.

  Examples of the application method include a dip nip method, a rotary screen method, a knife coater method, a kiss roll coater method, and a gravure roll coater method. In particular, the dip nip method is preferable in that an ink receiving layer can be provided not only on the surface of the fabric but also on the entire fabric, and a fabric having excellent ink receiving ability can be produced.

  After applying a fiber discharging ink, a fiber discharging inhibiting ink, and, if necessary, a colored ink by an inkjet method, heat treatment is performed. By heat-treating, the fibers are removed, unevenness is developed, and when colored ink is applied, the fibers are colored.

  As conditions for the heat treatment, it is preferable to perform the treatment at 160 to 190 ° C. for about 10 minutes. When the temperature is lower than 160 ° C., the discharge tends to be insufficient, and particularly the coloring to the polyester fiber tends to be insufficient. When the temperature exceeds 190 ° C., a phenomenon such as burning of the fiber and yellowing tends to occur, and when nylon fiber is used, the coloring tends to be insufficient. The heat treatment may be either dry heat treatment or wet heat treatment. Among these, the treatment with wet heat is more preferable in that the uneven shape to be formed is good, and when coloring is performed at the same time, good color developability can be obtained at the same time.

  Furthermore, after heat treatment, it is preferable to carry out a washing treatment for the purpose of removing the ink receiving layer, unfixed dye, and further the degradation product of the fibers remaining on the fabric from the fabric. As for this cleaning treatment method, reduction cleaning using hydrosulfite, surfactant, soda ash and the like, which are usually performed, is used.

  Furthermore, it is preferable to perform a weight reduction process during the reduction cleaning.

  By performing the weight reduction treatment, the fibers remaining in a fluffy state due to insufficient fiber decomposition or the like can be removed, and further clear irregularities can be formed. For the weight reduction treatment, a strong alkali agent such as a cationic surfactant, an alkali penetrating agent and caustic soda which is a weight reduction accelerator is used.

  The conditions for the weight loss treatment are not particularly limited. For example, using a weight loss accelerator 1 to 5 g / L and caustic soda (granule) 2 to 15 g / L, a treatment temperature of 70 to 90 ° C. What is necessary is just to process for 60 minutes.

  Examples of weight loss promoters include aliphatic amine salt cationic surfactants, quaternary ammonium salt cationic surfactants of aliphatic amine salts, aromatic quaternary ammonium salt cationic surfactants, and heterocyclic quaternary ammonium salt positive agents. An ionic surfactant or the like can be used.

  As described above, the fibers can be completely removed by the washing treatment and / or the weight loss treatment.

  Examples are shown below. In addition, “%” used in the examples represents a ratio based on weight.

Production Example 1
(Production of Fabric A)
A composite fabric having a thickness of 2 mm (surface: printed surface) made of polyester fiber (manufactured by Toray Industries, Inc., 66 dtex / 144f) and back surface of 6 nylon (manufactured by Toray Industries, Inc., 78 dtex / 24f) The following composition is mixed with the reversible (tricot half) structure of the knitted fabric, and the treatment liquid obtained by stirring for 1 hour using a homogenizer is dip nip so that the solid content is 2 g / m ^2. And dried at 170 ° C. for 2 minutes to obtain a composite fabric A on which an ink receiving layer was formed.

Ink-receiving layer forming treatment solution DKS fine gum HEL-1 2%
(Daiichi Kogyo Seiyaku Co., Ltd., etherified carboxymethylcellulose)
MS Liquid 5%
(Manufactured by Meisei Chemical Industry Co., Ltd., nitrobenzene sulfonate, reduction inhibitor, active ingredient 30%)
93% water

Production Example 2
(Production of fabric B)
A composite with a thickness of 2 mm, the surface (printed surface) of which is made of cationic dyeable polyester fiber (Toray Industries, Inc., 84 dtex / 72f) and the back surface of 6 nylon (Toray Industries, Inc., 78 dtex / 24f) An ink-receiving layer was formed on the fabric (the Kanoko structure by the circular knitting plating method) in the same manner as in Production Example 1 to obtain a composite fabric B.

Production Example 3
(Production of fabric C)
An ink receiving layer was formed on a 3 mm thick pile fabric composed of polyester fibers (manufactured by Toray Industries, Inc., 66 dtex / 144f) in the same manner as in Production Example 1 to obtain composite fabric C.

Production Example 4
(Preparation of PET fiber discharging ink a-1)
Each of the following compositions was mixed, stirred for 1 hour using a stirrer, and then ADVANTEC high purity filter paper No. The solution was filtered under reduced pressure with 5A (manufactured by Toyo Filter Paper Co., Ltd.). Then, vacuum deaeration treatment was performed to obtain PET fiber discharging ink a-1 (viscosity at 25 ° C. of 3 cps). The pH of the 20% aqueous solution of guanidine carbonate is 12.

PET fiber removal ink a-1
Guanidine carbonate (PET fiber extractant) 20%
Urea (dissolution stabilizer) 5%
Diethylene glycol (anti-drying agent) 5%
70% water

Production Example 5
(Preparation of PET fiber discharging ink a-2)
Each of the following compositions was mixed, stirred for 1 hour using a stirrer, and then ADVANTEC high purity filter paper No. The solution was filtered under reduced pressure with 5A (manufactured by Toyo Filter Paper Co., Ltd.). Next, vacuum deaeration treatment was performed to obtain PET fiber discharging ink a-2 (viscosity at 25 ° C. of 2 cps). The pH of the 10% aqueous sodium hydroxide solution is 14.

PET fiber removal ink a-2
Sodium hydroxide (PET fiber extractant) 10%
Urea 5%
85% water

Production Example 6
(Preparation of PET fiber removal suppression ink b-1)
Each of the following compositions was mixed, stirred for 1 hour using a stirrer, and then ADVANTEC high purity filter paper No. The solution was filtered under reduced pressure with 5A (manufactured by Toyo Filter Paper Co., Ltd.). Subsequently, vacuum deaeration treatment was performed to obtain a PET fiber removal inhibiting ink b-1 (pH 5.0, viscosity 3 cps at 25 ° C.). The pH of the ammonium sulfate 40% aqueous solution is 4.5.

PET fiber removal suppression ink b-1
Ammonium sulfate (extraction inhibitor) 40%
Urea (dissolution stabilizer) 5%
Diethylene glycol (anti-drying agent) 5%
50% of water

Production Example 7
(Preparation of PET fiber removal suppression ink b-2)
Each of the following compositions was mixed, stirred for 1 hour using a stirrer, and then ADVANTEC high purity filter paper No. The solution was filtered under reduced pressure with 5A (manufactured by Toyo Filter Paper Co., Ltd.). Subsequently, vacuum deaeration treatment was performed to obtain a PET fiber removal inhibiting ink b-2 (pH 8.0, viscosity 3 cps at 25 ° C.). The pH of the magnesium sulfate 15% aqueous solution is 7.5.

PET fiber removal suppression ink b-2
Magnesium sulfate (extraction inhibitor) 15%
Urea 5%
Diethylene glycol 5%
75% water

Production Example 8
(Preparation of three primary color ink sets c for coloring PET fibers)
Each of the following compositions was mixed, stirred for 1 hour using a stirrer, and then ADVANTEC high purity filter paper No. The solution was filtered under reduced pressure with 5A (manufactured by Toyo Filter Paper Co., Ltd.). Subsequently, vacuum deaeration treatment was performed to obtain a three primary color ink set c for coloring PET fibers.

Three primary color ink set c for pigmenting PET fibers
(Blue ink)
Kiwalon Polyester Blue BGF 10%
(Kiwa Chemical Industry Co., Ltd., disperse dye, CI Disperse Blue 73)
Disper TL (made by Meisei Chemical Co., Ltd., dye dispersant) 2%
Diethylene glycol (anti-drying agent) 5%
83% water
(Red ink)
Kiwalon Polyester Red BFL 10%
(Kiwa Chemical Industry Co., Ltd., disperse dye, CI Disperse Red 92)
Disper TL 2%
Diethylene glycol 5%
83% water
(Yellow ink)
Kiwalon Polyester Yellow 6GF 10%
(Kiwa Chemical Industry Co., Ltd., disperse dye, CI Disperse Yellow 114)
Disper TL 2%
Diethylene glycol 5%
83% water

Example 1
The fiber discharge ink a-1 obtained in Production Example 4, the fiber discharge suppression ink b-1 obtained in Production Example 6, and the coloring ink set c obtained in Production Example 8 were obtained in Production Examples 1 to 3. Each of fabric A, fabric B, and fabric C having an ink receiving layer was printed by an inkjet method.

  Here, the PET fiber removal region is the region X, the PET fiber removal unprocessed region (non-colored region) is the region Y, and the PET fiber removal unprocessed region (PET fiber color pattern coloring region) is the region. Z was printed as shown in FIG. That is, a circle 3 having a diameter of 10 mm and a square 4 mm having a side length of 5 mm are drawn on the fabric 1 from the center of gravity of the rectangle 2 having a length of 25 mm and a width of 40 mm, and a region surrounded by the circle 3 and the square 4 is a region X and a rectangle 2 An area Y on the left side of the line connecting the midpoints of the long sides and not including the area X, an area Y on the right side of the line connecting the midpoints of the long sides of the rectangle 2, and the area not including the area X Z. Of course, the effect of the manufacturing method of the present invention is not limited to this printing pattern.

  The ink jet printing conditions at this time are shown below.

Inkjet printing condition printing apparatus: On-demand type serial scanning inkjet printing apparatus Nozzle diameter: 50 μm
Drive voltage: 100V
Frequency: 5kHz
Resolution: 360 dpi
Amount printed:
(1) Area X (PET fiber removal process area)
PET fiber removal ink 40g / m ²
(2) Region Y (PET fiber removal unprocessed region)
PET fiber removal suppression ink 10 g / m ²
(3) Region Z (PET fiber removal unprocessed and PET fiber color pattern coloring region)
PET fiber removal suppression ink 10 g / m ²
PET fiber colored 3 primary color ink set 15g / m ^{2 for} each color

  After the fabric was dried, it was wet-heat treated at 175 ° C. for 10 minutes using an HT steamer. Furthermore, in a soaping bath containing 2 g / L of Tripol TK (Daiichi Kogyo Seiyaku Co., Ltd., nonionic surfactant), 2 g / L of soda ash, and 1 g / L of hydrosulfite at 80 ° C. for 10 minutes. After being treated and washed, it was washed with water and dried to obtain a printed product.

Example 2
In the same manner as in Example 1, the fiber discharging ink a-1, the fiber discharging inhibiting ink b-2, and the coloring ink set c were printed on the fabric A, the fabric B, and the fabric C, respectively, to obtain printed matter.

Example 3
In the same manner as in Example 1, the fiber discharging ink a-2, the fiber discharging inhibiting ink b-1, and the coloring ink set c were printed on the fabric A, the fabric B, and the fabric C, respectively, to obtain printed matter.

Example 4
In the same manner as in Example 1, the fiber discharging ink a-2, the fiber discharging inhibiting ink b-2, and the coloring ink set c were printed on the fabric A, the fabric B, and the fabric C, respectively, to obtain printed matter.

Comparative Example 1
The fiber discharge ink a-1 and the coloring ink set c were printed on the fabric A, the fabric B, and the fabric C, respectively, in the same manner as in Example 1 except that the fiber discharge suppression ink b-1 was not used. A printed product was obtained. The ink jet printing conditions at this time are shown below. Here, the region corresponding to the region Y is not printed, and only the colored ink is printed in the region corresponding to the region Z.

Inkjet printing condition printing apparatus: On-demand type serial scanning inkjet printing apparatus Nozzle diameter: 50 μm
Drive voltage: 100V
Frequency: 5kHz
Resolution: 360 dpi
Amount printed:
(1) Area X (PET fiber removal process area)
PET fiber removal ink 40g / m ²
(2) Region corresponding to region Y (PET fiber removal unprocessed region)
Not printed (3) Region corresponding to region Z (PET fiber removal unprocessed and PET fiber color pattern coloring region)
PET fiber colored 3 primary color ink set 15g / m ^{2 for} each color

Comparative Example 2
A printed material was obtained in the same manner as in Comparative Example 1 except that the fiber discharging ink was changed to a-2.

  About the printed matter obtained in the said Examples 1-4 and Comparative Examples 1-2, it evaluated by the following two items. The results are shown in Table 1.

(1) Uneven sharpness at the boundary between regions X and Y and the boundary between regions X and Z The sharpness at each region boundary was visually determined using a magnifying glass according to the following criteria.
◎ The boundary is very clear. ○ The boundary is clear. △ The boundary is slightly blurred. × The boundary is unclear.

(2) The boundary between the regions X and Z, the sharpness and darkness of the color pattern at the boundary between the regions Y and Z, the sharpness of the color pattern is visually observed, and the darkness is the reflection density of Macbeth RD918 (manufactured by GretagMacbeth) ), And comprehensively determined according to the following criteria.
◎ The border is extremely clear and the color pattern is expressed in dark color. ○ The boundary is clear and the color pattern is expressed in dark color. △ The boundary is slightly blurred and the expression is poor in density. × The boundary is The expression is unclear and has poor density

  In Examples 1 and 2 using the fiber discharging ink a-1, both the sharpness of the concavo-convex boundary and the color pattern expression of the concavo-convex boundary are good, and it can be said that Example 1 has particularly high superiority. Although Examples 3 and 4 using the fiber discharging ink a-2 were slightly inferior to Examples 1 and 2, results superior to the comparative example were obtained.

  In particular, for the fabrics A and B in which the ink tends to bleed in the direction of the fibers, the example has an extremely superior advantage over the comparative example in both the sharpness of the uneven boundary and the color pattern expression of the uneven boundary. Indicated.

In the Example of this invention, it is a figure which shows the pattern printed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fabric 2 Rectangle of length 25mm and width 40mm 3 Circle of diameter 10mm 4 Square of 1 side 5mm

Claims (5)

Ink containing a salt having a pH of 3.0 to 8.0 when dissolved in water, and a step of applying an ink containing an alkaline fiber extractant to a fabric by a inkjet method on a fabric. A method for producing a three-dimensional pattern-forming fabric, comprising a step of applying an ink jet method to a region other than the fiber discharging region. Furthermore, the manufacturing method of the three-dimensional pattern formation fabric of Claim 1 including the process of providing the ink containing a coloring agent with an inkjet system. The method for producing a three-dimensional pattern forming fabric according to claim 1 or 2, wherein the alkaline fiber discharging agent is guanidine carbonate. The manufacturing method of the three-dimensional pattern formation fabric of Claim 1, 2, or 3 in which the said fabric contains a polyester-type fiber. A three-dimensional pattern forming fabric obtained by the production method according to claim 1, 2, 3 or 4.

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