JPH1193062A - Fabric for ink jet dyeing and ink jet dyeing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fabric for ink jet dyeing, capable of being printed in a sharp and brilliant image little in blot and high in dyeing levelness by imparting one or more functional chemicals capable of being adsorbed and adhered to the fabric in a color-developing process after printed with an ink jet. SOLUTION: This fabric for ink jet printing is obtained by imparting at least one or more functional chemicals selected from antimicrobial agents, moisture-absorbing agents, UV light absorbents, IR light absorbents, fluorescent whitening agents, flame retardants, fastness-improving agents, perfumes, resins and monomers which are adsorbed and adhered to the fabric comprising one or more kinds of polyester fibers, cellulose fibers and polyamide fibers in a color-developing process after printed with an ink jet, and a blot-preventing agent such as a water-soluble polymer, e.g. an acrylate-based paste, are imparted to the fabric. The fabric for the ink jet printing is preferably subjected to an ink jet printing, a color development and a soaping to dye the fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink-jet dyeing method which can print a sharp, clear and highly leveled image with little bleeding in ink-jet dyeing and imparts functionality by a coloring step after ink-jet dyeing. The present invention relates to a fabric for use and an ink jet dyeing method using the same.

[0002]

2. Description of the Related Art Conventionally, hand-printing, roller printing, screen printing, transfer printing and the like have been adopted as a method of forming a pattern on a cloth. It is a method that requires.

In recent years, in the field of paper printing, an ink-jet printing method has been developed and has already been put to practical use.
In the textile field, pattern formation by the inkjet method is possible by combining with a pattern reader or computer, making it possible to print without spending the time and expense of manufacturing screens, engraving rollers, transfer paper etc. Has attracted attention, and attempts have been made to apply it as it is to dyeing fabrics.

In the method of dyeing a fabric by ink jet, prevention of bleeding is the most important issue in order to obtain a delicate image on the fabric. The present inventors have already proposed a method of using a special pretreatment for a fabric for that purpose. However, the ink jet dyeing has a very low dyeing speed itself, and the number of steps such as pretreatment for impregnating and drying a fabric with a chemical agent is increased, which tends to hinder productivity. In addition, in order to color and fix dyes and inks after dyeing, steps such as coloring, soaping and fixing are required as in the past,
Even when color development and soaping are completed, there is an added value in appearance such as color and pattern, but when fabric is used for clothing, materials, etc., functional chemicals are further processed to secure fabric physical properties and to impart functionality. , And the process is further lengthened, and there is a problem that the productivity is reduced accordingly.

[0005]

SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention is capable of providing a sharp, clear and highly leveled image with little bleeding, It is an object of the present invention to provide an ink jet dyeing fabric that can impart functionality by a coloring step and can further simplify or omit post-processing.

[0006]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the fabric for inkjet dyeing of the present invention,
In the color development / soaping process after inkjet dyeing, a functional agent that is adsorbed and fixed to the fabric in the color development process,
The present invention is characterized in that both the bleeding preventive agent which is washed and dropped off in the soaping step is provided. Further, the ink jet dyeing method of the present invention is characterized in that after the above-mentioned agent is applied to form the fabric, ink jet dyeing, coloring, and soaping are performed using the cloth.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has been studied diligently for a technique for improving the productivity of ink jet dyeing, and as a result, as a dyeing cloth, a cloth provided with both a specific functional agent and an anti-bleeding agent is used. When employed, surprisingly, the above-mentioned problem, that is, in the case of inkjet dyeing, small bleeding, sharp and clear images can be printed with high levelness, and at the same time, functionality is imparted by a color forming process after inkjet dyeing The present invention has sought to solve the problem that the post-processing can be simplified or omitted.

[0008] Ink jet dyeing as used in the present invention is a method in which a liquid such as ink is discharged from a nozzle, and the discharged liquid is formed into droplets for control and use.
(1) Continuous discharge method (deflection type, divergence type) (2) On-demand type (pressure pulse type, bubble jet type, electrostatic discharge type) and the like, and any type may be used.

The color developing soaping step after the ink-jet dyeing is carried out in the same manner as ordinary screen printing.

[0010] The color forming step means that an ink (dye, pigment, etc.) which has only adhered to the fabric surface after printing and has not been sufficiently absorbed and fixed to the fabric is absorbed and fixed to the fabric to express the original hue of the ink. This is the step of causing Examples of the method include steaming with steam, baking with dry heat, thermosol, HT steamer with superheated steam, and HP steamer with pressurized steam.
They are appropriately selected depending on the material to be printed, ink, and the like.

In the soaping step, after the coloring step,
This is a step of removing unadsorbed / unfixed ink (dye, pigment) and the like, and is mainly performed for the purpose of improving the fastness of the fabric. The method is selected depending on the material to be printed and the ink. For example, in the case of polyester, it is generally treated with a mixture of caustic soda, a surfactant, and hydrosulfite. The method is usually carried out in a continuous type such as an open soaper or a batch type using a liquid jet dyeing machine. In the present invention, any method may be used.

The functional agent adsorbed and fixed on the fabric in the color forming step according to the present invention includes a chemical agent impregnated inside the fiber in the color forming step to physically and chemically combine to exhibit a function, and a physical agent outside the fiber to express the function. An agent that chemically adheres or coats, or chemically bonds, and changes the feel, appearance, and performance. Further, it is a chemical agent capable of maintaining performance sufficient to obtain a practical effect even after a soaping step. Preferably, the agent is capable of chemically bonding to the fiber inside or outside the fiber. Chemically binding agents are excellent in retaining the function of the agents in the soaping step after color development or in the use of dyed fabrics in various forms.

There are many types of functional agents of the present invention, for example, resins, monomers, antibacterial agents, hygroscopic agents, ultraviolet absorbers, infrared absorbers, fluorescent brighteners, flame retardants, fastness improvers, At least one selected from fragrances and the like can be used, but among these functional agents. Especially,
An ultraviolet absorber, a fluorescent whitening agent, a fastness improving agent and the like are preferably used.

[0014] The concentration of these functional agents used is fixed
After going through the soaping process, use it at a concentration that has practical performance, depending on the type of drug,
Furthermore, since it differs depending on the fixing condition and the soaping condition, it cannot be specified unconditionally, but is 0.01 to 50%, preferably 0.05 to 20%, more preferably 0.1 to 10%.
It is recommended to use a concentration in the range of%. If the amount is too small, the function is not exhibited or the effect is not sufficient, and if the amount is excessively used, the effect may be worsened. These functional agents may have a bleeding prevention effect,
Generally, its effect is small, and its purpose is
Since the function is developed after soaping, it is not included in the bleeding preventive agent in the present invention.

The bleeding-preventing agent which is dropped off in the soaping step is intended to reduce the spread (bleeding) of ink droplets on the cloth and to form a clear picture when the ink is applied to the cloth in the printing step. And various drugs and methods are being studied. For example, in JP-A-60-99081, a method of treating a fabric with a water-repellent agent, and in JP-A-61-55277,
A method using a water-soluble polymer, JP-A-60-81379
In the publication, there is a method of gelling the ink.

It is essential that the bleeding preventive in the present invention can be washed and dropped off in the soaping step. As specific examples thereof, for example, polymers, various fine particles, inorganic salts and the like can be used, but the soaping step is generally carried out in an aqueous system, so that water-soluble polymers, water-soluble Inorganic salts are preferably used.

Examples of the water-soluble polymer include acrylic glue, sodium alginate, tamarind etherified product, vinyl polymer, CMC, natural gum derivative, starch derivative, cellulose derivative, starch, guar gum,
Plant gums and the like can be used. Furthermore, cationic polymers such as polymers having quaternary ammonium groups and polyamines are also preferably used.

The fine particles include, for example, barite, precipitated barium sulfate, chalk, precipitated calcium carbonate, chalk, clay, talc, silica white, alumina white, titanium white, bentonite, and the like used as extenders. Calcium silicate, aluminum silicate, etc. may be used, and titanium oxide, zinc white, lithopone, lead white, basic lead sulfate, zircon oxide, antimony white, plastic pigment, etc. used as white pigments may be used. Although it is contained in the extender and the white pigment, inorganic oxides and colloidal particles can also be used. As the particle size of such fine particles,
Preferably it is 0.01 to 500 µm, more preferably 0.1 to 500 µm.
Those having a size of from 02 to 100 μm are used, and when used in combination with a water-soluble polymer, an excellent effect of preventing bleeding is exhibited.

As the water-soluble inorganic salts, alkali and alkaline earth metal chlorides and the like can be used. Among the bleeding preventives, it is particularly preferable to use inorganic fine particles in combination with water-soluble inorganic salts.

The use concentration of these anti-bleeding agents is preferably 0.1 to 40%, more preferably 0.05 to 20%.
%, Particularly preferably 0.1 to 10%. If the amount is small, the function is not expressed or the effect is not sufficient. Also, if used excessively, it becomes difficult to apply.

The functional agent and the anti-smear agent applied to the fabric according to the present invention are adhered to at least one surface to be subjected to ink jet dyeing. It is desirable to be provided in such a way that In particular, the anti-smearing agent is desirably uniformly applied to at least one surface to be subjected to ink jet dyeing. If the adhesion form is non-uniform, problems such as spots may occur during ink jet dyeing. The amount of the functional agent and the amount of the anti-bleeding agent to be applied differs depending on the intended effect, and is used at the aforementioned concentration. In particular, functional drugs have a wide range of effects and the amount of application cannot be determined unequivocally, but if the amount is too large, the effect of preventing bleeding is adversely affected. Is preferred. On the other hand, if it is too small, it will fall off in the soaping step, and the desired effect cannot be obtained sufficiently.

The method of applying the functional agent and the anti-smearing agent to the fabric is easiest by mixing each of them, padding the fabric, and then drying the mixture, but is not particularly limited to this method. For example, a method in which the viscosity is adjusted after mixing the respective chemicals and applied to one side of the cloth with a knife coater, a gravure coater, a rotary screen, or the like, or a functional chemical is padded / dried in advance on the cloth, and then a bleeding inhibitor is further padded / A two-stage method of drying is also possible.

The fabric referred to in the present invention is a woven fabric, a knitted fabric or a non-woven fabric made of natural fibers and chemical fibers, and also includes a web-like fiber laminate such as futon and quilting material used for filling. Among them, as the cloth, a cloth containing at least one selected from polyester fibers, cellulose fibers and polyamide fibers is preferably used. Depending on the fiber material constituting such a fabric, the compositions of the bleeding preventive agent and the functional agent may be slightly different, but in order to suitably achieve the effects of the present invention, the following three types are preferably used. A fabric mainly containing at least one is used.

The important points of the bleeding preventive agent and the functional agent imparted to the ink-jet dyeing fabric of the present invention are as follows. There is a demand to provide an image with high performance, and it is important that, in the soaping step of post-dyeing processing, the image does not fall off as quickly as possible and does not hinder the functional expression of the functional drug.

Contrary to the anti-smearing agent, the functional agent is required not to hinder the manifestation of the effect of the anti-smearing agent itself during ink jet dyeing, and to be as tough as possible in the coloring step after dyeing. Adsorbed on fiber
It is preferable that the adhesive is fixed and can effectively exhibit its function by minimizing falling off in the soaping process.

That is, the anti-smudge agent and the functional agent have opposing surfaces, and the selection and combination thereof differ depending on the type and function of the fabric used for ink jet dyeing. It is preferable that the composition is a combination. Although it can be said that the combinations are endless, examples of particularly preferable combinations of the cloth, the bleeding preventive agent and the functional agent in the ink jet dyeing cloth of the present invention are as follows. However, it is not limited to these.

In the case where the cloth is mainly composed of polyester fiber, at least 1 to 20% of a cationic compound and 0.1% of a cationic non-coagulable paste are used as an anti-smearing agent.
It is preferable that at least 0.5 to 10% of a nonionic or cationic ultraviolet absorber is provided as a functional agent, and a dyed fabric obtained by inkjet dyeing, coloring, and soaping using the fabric is Not only is it a sharp, clear and highly leveled image printing cloth, but also has good light fastness, and it is possible to omit or simplify the addition of functionality in ordinary post-processing.

The cationic compound mentioned here is an alkali or alkaline earth metal chloride, a cationic polymer, or the like. The cationic non-coagulant paste is a paste that does not form a coagulated product by an ionic reaction with the cationic compound, and is generally a cationic or nonionic paste. However, even a weakly anionic sizing agent can be used as long as it does not hinder the processing of the fabric.

As the ultraviolet absorber, those for ordinary polyesters can be used, and benzotriazole compounds and benzophenone compounds can be used.
T-40 (manufactured by Senka Co., Ltd.), Sun Up LF (Shinha Corporation), Antifade 8001 (Meisei Chemical Co., Ltd.) and the like can be used.

In the case where the cloth is mainly made of cellulose fiber, at least 0.5 to 20% of an anionic sizing agent as a bleeding inhibitor and at least 0.1 to 10% of a fluorescent whitening agent as a functional agent are provided. It is preferable that the dyed fabric obtained by inkjet dyeing, coloring, and soaping using the fabric is not only a printed fabric having a sharp, clear and highly level image,
The white area can provide a target level of fluorescent color, and is also effective when there is a problem with the compatibility of the fluorescent whitening agent with the finish applied by post-processing.

As the anionic paste, sodium alginate, CMC and the like are preferably used.

As the fluorescent whitening agent, those used for ordinary cellulosic fibers can be used.
orAS150 (Nippon Kayaku Co., Ltd.), UvitexCF li
q. 200% (Nippon Ciba Geigy Co., Ltd.), Leuc
ophorBFB (manufactured by Clariant Japan KK) or the like can be used.

In the case where the cloth is mainly made of polyamide fiber, it is preferable that at least 1 to 20% of a sizing agent as a bleeding inhibitor and at least 0.2 to 30% of a fixing agent as a functional agent are provided. The dyed fabric obtained by inkjet dyeing, coloring, and soaping using the fabric is not only a printed fabric of a sharp, clear and highly leveled image, but also has good washing fastness, and usually has It is possible to omit the fixing (fixing) step performed after the soaping.

As such fixing agents, those having various performances are commercially available and can be used according to the purpose. For example, a tannin-based fixing agent or a polyacrylamine-based fixing agent is preferably used.

When the amount of the anti-smudge agent used is small, the effect is insufficient, and when the amount is large, the effect tends to be saturated, and adverse effects such as an increase in the liquid viscosity are caused to deteriorate the processability. .

If the amount of the functional agent used is small, the function cannot be sufficiently exhibited, and if the amount is large, adverse effects such as deterioration of processability and deterioration of the function occur.

[0037]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples.

The examination conditions of the examples and comparative examples are shown below.

[Inkjet dyeing apparatus] Color inkjet printer IO-735 manufactured by Sharp Corporation
(4 colors, 180 dpi) [Cloth to be dyed]

[Table 1] (Dyeing pretreatment formula)

[Table 2] [Ink formulation] (Ink formulation A: Example 1, Comparative Example 1)

[Table 3] (Ink formulation B: Example 2, Comparative example 2)

[Table 4] (Ink formulation C: Example 3, Comparative examples 3 and 4)

[Table 5] [Evaluation method for bleeding prevention] 10 μl of the ink is dropped on a recording medium, and the bleeding diameter is measured.

The bleeding diameter of the pretreated fabric was compared with the bleeding diameter of the cloth to be dyed without the dyeing pretreatment in three stages.

：: very good Δ: somewhat good ×: same level Example 1, Comparative Example 1 Evaluation was performed under the following conditions.

After the cloth A to be dyed (polyester woven fabric) is desizing, scouring, and tentering set in a usual manner, the treatment liquids of the pretreatment prescription A (Example 1) and the pretreatment prescription B (Comparative Example 1) are used. Padding (pickup: 55%) was performed, and drying and tentering set were performed to obtain a fabric for inkjet dyeing.

Table 6 summarizes the results of bleeding prevention using the ink of the ink formulation A on the obtained fabric.

In both Example 1 and Comparative Example 1, ink bleeding was prevented.

Further, ink jet dyeing was performed on the cloth using the ink of ink formulation A. The fabric after the inkjet dyeing was subjected to color development by steaming at 175 ° C. for 5 minutes using an HT steamer, and then subjected to reduction cleaning soaping and drying by a conventional method.

The light fastness of the obtained fabric (JIS L
0842) was measured, and the results are shown in Table 6.

[0047]

[Table 6] As is clear from Table 6, Comparative Example 1 was different from Example 1
Had an improvement effect of 0.5 to 1.0 grade and was good.

Example 2 and Comparative Example 2 Evaluation was performed under the following conditions.

After setting the cloth B to be dyed (cotton fabric) by desizing, refining, bleaching, mercerizing, and tentering in the usual manner, pretreatment formula C (Example 2) and pretreatment formula D (Comparative example 2) Each of the liquids was padded (pickup: 60%), dried and tentatively set to obtain a fabric for inkjet dyeing.

The results of the bleeding prevention evaluation performed using the ink of the ink formulation B of the obtained fabric are summarized in Table 7.

In Example 2 and Comparative Example 2, ink bleeding was prevented.

Further, ink jet dyeing was carried out on the cloth using the ink of ink formulation B. The fabric after the inkjet dyeing was colored by steaming at 100 ° C. for 10 minutes using a normal pressure steamer, and then soaped and dried by a conventional method.

[0053]

[Table 7] As shown in Table 7, the obtained fabric had the white area in Example 2 already colored at the target level of fluorescent color. In comparison, in Comparative Example 2, no fluorescent color was observed in the white field, and it was necessary to further pad, dry, and heat-treat the fluorescent dye to obtain the target fluorescent color.

Example 3, Comparative Examples 3 and 4 Evaluation was performed under the following conditions.

After the cloth to be dyed C (nylon woven fabric) is desizing / refining / bending set in a usual manner, a pretreatment formula E (Example 3)
And a processing solution of pretreatment prescription F (Comparative Example 3) and pretreatment prescription G (Comparative Example 4) were padded (pickup: 5).
0%), and dried and tentatively set to obtain a fabric for inkjet dyeing.

Table 3 summarizes the results of the evaluation of bleeding prevention using the ink of the ink formulation C of the obtained fabric.
In both Example 3 and Comparative Example 3, bleeding of the ink was prevented. The cloth of Comparative Example 4 to which the anti-smudge agent was not applied in the present invention had an effect of preventing bleeding to some extent as compared with the cloth without pre-treatment, but at an insufficient level.

Further, ink jet dyeing was performed on the cloth using the ink of ink formulation C. The fabric after inkjet dyeing was colored by steaming at 100 ° C. for 20 minutes using a normal pressure steamer, and then soaped and dried by a conventional method.

[0058]

[Table 8] The washing fastness (JIS L 0844) of the obtained fabric was measured, and the results are summarized in Table 8. Example 3 was O.D. compared to Comparative Example 3 containing no functional drug. The washing fastness of the 5th to 1st grade was improved. Comparative Example 4, which contains only a functional agent, has poor bleeding prevention, but is similar to Example 3 in terms of functional development, and the harm caused by the combined use of the bleeding preventive agent and the functional agent in the present invention appears. Not.

[0059]

According to the present invention, the ink jet dyeing fabric obtained by the present invention can print a sharp, clear and highly leveled image with little bleeding at the time of ink jet dyeing. Functionality can be imparted, and post-processing can be simplified or omitted.

Claims (14)

[Claims] 1. A fabric to which at least both a functional agent adsorbed and fixed to a fabric in a color forming step and an anti-bleeding agent washed and dropped in a soaping step are applied at least after ink jet dyeing. An ink-jet dyeing fabric, characterized in that: 2. The functional agent is at least one of an antibacterial agent, a moisture absorbent, an ultraviolet absorber, an infrared absorber, a fluorescent brightener, a flame retardant, a fastness improver, a fragrance, a resin and a monomer. Item 7. An ink-jet dyeing fabric according to item 1. 3. The ink-jet dyeing fabric according to claim 1, wherein said anti-smudge agent is a water-soluble polymer. 4. The ink-jet dyeing cloth according to claim 1, wherein said cloth is a cloth containing at least one selected from polyester fibers, cellulose fibers and polyamide fibers. 5. The fabric according to claim 1, wherein said fabric is mainly a polyester fiber, and said bleeding preventive agent comprises 1 to 20% of a cationic compound and 0.1 to 1 of a cationic non-coagulable paste.
The ink-jet dyeing fabric according to claim 1 or 4, wherein 5% of the nonionic or cationic ultraviolet absorber is added as the functional agent. 6. The fabric according to claim 1, wherein the fabric is mainly a cellulose fiber, wherein the bleeding inhibitor is an anionic sizing agent of 0.5 to 20%, and the functional agent is a fluorescent whitening agent of 0.1%.
The fabric for ink jet dyeing according to claim 1 or 4, wherein 10 to 10% is provided. 7. The fabric according to claim 1, wherein the fabric is mainly made of polyamide fiber, and
5. The inkjet dyeing fabric according to claim 1, wherein the functional agent is provided with a fixing agent of 0.2 to 30%. 8. A functional agent which is adsorbed and fixed on the fabric in the color forming step, and is dropped in the soaping step,
An ink jet dyeing method comprising applying at least both agents for preventing bleeding to form a fabric for ink jet dyeing, and then performing ink jet dyeing, coloring, and soaping using the cloth. 9. The functional agent is at least one of an antibacterial agent, a moisture absorbent, an ultraviolet absorber, an infrared absorber, a fluorescent brightener, a flame retardant, a fastness improver, a fragrance, a resin and a monomer. Item 10. The inkjet dyeing method according to Item 8. 10. The ink jet dyeing method according to claim 8, wherein the anti-smearing agent is a water-soluble polymer. 11. The fabric according to claim 1, wherein said fabric is at least one selected from polyester fibers, cellulose fibers and polyamide fibers.
9. The ink jet dyeing method according to claim 8, which is a cloth containing seeds. 12. The fabric according to claim 1, wherein said fabric is a fabric mainly composed of polyester fibers, and said bleeding preventive agent comprises 1 to 20% of a cationic compound, and 0.1 to 0.1% of a cationic non-coagulable paste.
9. A nonionic or cationic ultraviolet absorber of 0.5 to 10% as the functional agent.
Or the inkjet dyeing method according to 11 above. 13. The fabric according to claim 1, wherein the fabric is mainly made of cellulose fiber, wherein 0.5 to 20% of an anionic sizing agent is used as the bleeding preventive, and a fluorescent whitening agent is used as the functional agent.
The inkjet dyeing method according to claim 8 or 11, wherein 1 to 10% is provided. 14. The fabric according to claim 1, wherein said fabric is mainly made of polyamide fiber, and
The inkjet dyeing method according to claim 8 or 11, wherein the functional agent is provided with a fixing agent of 0.2 to 30%.