JP2001295186A - Ink jet printing method and printed article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an evenness of dyeing in an ink jet printing method by effectively utilizing the migration phenomenon of an acceptor (a polymer of an accepting layer). SOLUTION: This method for ink jet printing, comprising ink jet printing a fabric whose constituting fibers at least partially or wholly comprise synthetic fibers, characterized by preliminarily imparting a treating liquid containing the water-soluble polymer (A) and the polymer (B) to the fabric and then drying the fabric. (A): one or more water-soluble polymers selected from carbonyl group free cellulose ethers and water-soluble synthetic polymers having hydroxyl groups at the molecular terminals. (B): one or more polymers selected from polymers having COOM groups (M is H, Na, K, NH4, or an alkyl) in the molecule and CONH2 groups.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet system, and more particularly, to a method of printing a fabric by an ink jet system and a printed material.

[0002]

2. Description of the Related Art In recent years, a so-called ink jet printing method has been adopted as a method of printing a cloth, in which dye ink is jetted from a traveling nozzle to dye the cloth.
In the case of printing by the ink-jet method, there is a great advantage that a design can be freely selected and the number of colors that can be expressed is abundant. However, similar to the conventional printing method (screen printing, roller printing), depending on the target fabric, the penetration of the dye is poor, and the coloring material is applied to the inside of the fabric or the surface opposite to the surface to which the coloring material is applied. Difficult to reach, only the surface is colored, and deep color expression cannot be performed.

By the way, the most important problem in displaying a fine image on a cloth is to prevent dye bleeding. Many proposals have been made on techniques for preventing the bleeding of the dye.

For example, a method of treating a cloth with a treatment liquid in which a water-soluble polymer is dispersed or emulsified with an oil or a medium, or a method of treating a cloth with a water-soluble polymer and then treating the cloth with a non-solvent of the water-soluble polymer, etc. (Japanese Unexamined Patent Publication No. 2-84593,
112489, JP-A-3-59177, JP-A-3-137283, JP-A-11-21772
Japanese Patent Application Laid-Open No. 8-35182), a method of treating a cloth with a non-permeable substance (water repellent or water-soluble polymer) and a hydrophilic substance (surfactant) in at least two steps. A method of applying a low molecular weight compound, a high molecular weight compound having the opposite ionicity to an ink dye, and a fiber of a fabric with a crosslinkable crosslinkable agent (Japanese Patent Application Laid-Open No. 9-188979). A method of providing a water-soluble polymer (JP-A-9-268482), a method of providing a water-soluble polymer (polyethylene oxide) and two water-soluble neutral salts to a fabric (JP-A-9-279488) A water-soluble polymer and / or a water-soluble salt is preliminarily applied to a yarn constituting the fabric, a fabric for inkjet printing (Japanese Patent Application Laid-Open No. H10-53973), and a fabric containing a water-soluble polymer has a surfactant. For inkjet printing (Japanese Patent Application Laid-Open No. 4-59282), a cloth treated with a treating agent containing a water-soluble hemicellulose (Japanese Patent Application Laid-Open No. 5-263673), and an acrylic ester copolymer. Ink jet textiles to which a partially saponified material is applied (Japanese Patent Application Laid-Open No. 8-127798).

Many of the prior arts relating to the prevention of dye bleeding essentially achieve the purpose by forming an ink-receiving layer composed of a water-soluble polymer on a fabric. With these prior arts, there is a feeling that the purpose of preventing ink bleeding in ink-jet printing has almost been achieved. However, these techniques are not always sufficient, especially for relatively thick fabrics or napkin fabrics in which fibers are arranged in a vertical direction.

[0006] An ink receptor made of a water-soluble polymer or the like is formed in a layer on a thick cloth or a nap cloth (ink-receiving layer).
In this case, a migration phenomenon of the water-soluble polymer constituting the receiving layer is observed in a heat treatment step such as drying.
In addition, cloth containing synthetic fibers with poor polarity, thick cloth,
The treatment solution containing a water-soluble polymer has a disadvantage that it is difficult to penetrate into the interior of the nappied fabric and the like. Inferior to

Although the degree of migration of the ink receiver is lower than that of the dye due to its high molecular weight, it does not mean that it does not occur at all. In particular, migration is very remarkably observed in the nappied fabric that requires strong drying. As a result, it is difficult to completely dye the pile surface from the pile surface to the root portion of the nappied fabric, which results in the generation of irregularities and uneven dyeing.

In order to solve these problems, Japanese Patent Laid-Open No.
No. 119046 describes that the napping fabric has an HLB value of 11-19.
A method is disclosed in which a water-soluble polymer is permeated into the inside by treating with a surfactant, and then dyed. Also, JP-A-5-5279, JP-A-5-263667
JP-A-8-127778 discloses a method of dyeing after using a specific migration inhibitor as a pretreatment agent.

However, in each case, the migration cannot be completely eliminated only by reducing the degree of migration. As described above, particularly in the case of a nap-up cloth, strong drying is required, and thus migration is remarkably recognized.

[00010]

SUMMARY OF THE INVENTION The present invention is directed to an ink-jet printing method in which the ink receptor is uniformly present inside the cloth by effectively utilizing the migration phenomenon of the receptor (polymer substance of the receiving layer). An object is to improve levelness in a printing method.

[0011]

Means for Solving the Problems The present inventors have studied the above-mentioned prior art and made intensive studies to solve the above-mentioned problems. As a result, a combination of two specific types of polymer substances having different chemical structures. Not only can prevent bleeding of ink on various kinds of fabrics by applying to the fabrics, but also can effectively utilize the migration phenomenon of the receptor (polymer material of the receiving layer). I found a printing method.

That is, the present invention relates to (1) the following water-soluble polymer substance (A) which is previously applied to a fabric when inkjet printing is performed on a fabric in which at least a part or all of the fibers constituting the fabric are made of synthetic fibers. And a treatment liquid containing the polymer substance (B) and drying the applied liquid. (A): one or more water-soluble polymer materials selected from cellulose ethers having no carbonyl group and water-soluble synthetic polymer materials having a hydroxyl group at the terminal of the molecule (B): -COOM group in the molecule (M is H, Na, K,
Represents NH ₄ or an alkyl group. ), And one or more polymer substances selected from polymer substances having a -CONH ₂ group

(2) An ink jet printing method in which the fabric is a nap fabric.

And (3) the water-soluble polymer substance (A) is cellulose ether including methylcellulose, ethylcellulose and hydroxyethylcellulose, polyvinyl alcohol, polyethylene glycol,
The present invention relates to an ink jet printing method which is one or more water-soluble polymer substances selected from polypropylene glycol and polyoxyethylene oxypropylene copolymer.

Also, (4) a polymer substance (B)
But sodium alginate, ammonium alginate, carboxymethyl cellulose, carboxymethyl starch,
Sodium polyacrylate, polyacrylamide, acrylic acid-acrylic ester copolymer, acrylic acid-acrylamide copolymer, polyacrylic acid, polyacrylic ester, methacrylic acid-methacrylic ester copolymer, vinyl acetate-maleic anhydride The present invention resides in an ink jet printing method which is one or more polymer substances selected from acid copolymers.

(5) After applying a treatment liquid containing the water-soluble polymer substance (A) and the polymer substance (B) to the cloth, when drying, when drying, the opposite side to which the treatment liquid is applied is applied. The present invention resides in an ink jet printing method in which a surface is dried with a heat medium and / or hot air.

Further, the mixing ratio of (6), the water-soluble polymer substance (A) and the polymer substance (B) is from 1: 1 to 20
0: 1 is the inkjet printing method.

(7) The above (1) to (6)
In the printed matter obtained by the printing method described in (1).

The present invention, having the above-described structure, makes it possible to effectively utilize the migration phenomenon of the ink receptor in the ink jet printing method and to make the ink receptor uniformly exist inside the cloth. it can. Therefore, in terms of phenomena, it is possible to improve the sense of irritability, the stuffiness of the standing blanket, and the like.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In carrying out ink-jet printing on a fabric, a treatment liquid containing a water-soluble polymer (A) and a polymer (B) is applied to the surface of the fabric (the side to be printed). Then, the fabric is dried. For example, in the case of a flat cloth, the treatment liquid containing the water-soluble polymer substance (A) and the polymer substance (B) penetrates into the inside of the cloth.

When hot air is applied to both sides of the cloth, the water is dried from both sides only with the water-soluble polymer substance (A), so that migration occurs on the front and back sides of the cloth.
Further, the polymer substance (B) hardly causes migration. Therefore, when a treatment solution containing the water-soluble polymer substance (A) and the polymer substance (B) is used, different migration phenomena occur in the drying process, and the entire fiber structure becomes water-soluble polymer substance ( It becomes covered with a receptor composed of A) and the polymer substance (B).

Also, in the case of a napped fabric, the treatment solution containing the water-soluble polymer substance (A) and the polymer substance (B) is as follows:
It will be evenly applied to the base from the tip of the pile. For example, when the migration distance (μm) between the water-soluble polymer substance (A) and the polymer substance (B) due to migration is measured, the result is as follows. All tests were performed under the same conditions (after the treatment liquid was applied to the entire napping cloth, the movement distance of the polymer from the napping surface to the inside when hot air was applied from the ground tissue side and dried).

Polymer (A): polyvinyl alcohol
140 (μm) Polyethylene glycol 250 (μm) (B): Sodium alginate 31 (μm) Polyacrylamide 19 (μm)

When ink-jet printing is performed from the surface of the cloth to which these high-molecular substances are applied, the coloring material can reach the inside of the cloth, and a deep expression can be achieved. Also,
Since the colorant is used efficiently because the treatment liquid permeates not only on the surface but also inside, the loss is reduced and the cost is advantageous.

Drying may be performed from either side of the fabric or from the side opposite to the side to which the treatment liquid containing the water-soluble polymer substance (A) and the polymer substance (B) is applied. In the case of a fabric having a pile structure such as a napping fabric,
By evaporating and drying the water mainly from the back side (the side that is not imprinted), it becomes possible to uniformly exist inside the pile where the polymer substance is difficult to enter. preferable. When the drying process is performed by applying hot air from the back surface, the back surface can be effectively dried.

Here, in the case where the treatment is carried out with the treatment liquid consisting of only the polymer (B), the treatment liquid does not penetrate to the back even if it is dried from the back surface. Further, in the case where the treatment is carried out with a treatment solution consisting only of the water-soluble polymer substance (A), the permeation occurs when drying is performed from the back side, but the leveling property is reduced and the leveling property is lost.
Therefore, it is important to use the water-soluble polymer (A) and the polymer (B) in combination, and thereby, it is possible to achieve the effective use of the coloring material and the improvement of the levelness, which are the objects of the present invention.

The water-soluble polymer substance (A) is one or more water-soluble polymer substances selected from cellulose ethers having no carbonyl group and water-soluble synthetic polymer substances having a hydroxyl group at the terminal of the molecule. Is adopted. That is, specifically, methyl cellulose, ethyl cellulose, cellulose ether such as hydroxyethyl cellulose, polyvinyl alcohol, polyethylene glycol,
Water-soluble synthetic polymers having a hydroxyl group at the terminal such as polypropylene glycol and polyoxyethyleneoxypropylene copolymers, and one or two selected from these.
More than one water-soluble polymer substance is employed. Among them, methylcellulose, ethylcellulose, hydroxyethylcellulose and polyvinyl alcohol having a hydrophilic hydroxyl group at other than the terminal are preferable because of excellent dyeing properties.

The polymer substance (B) includes -C in the molecule.
A polymer material having an OOM group (M represents H, Na, K, NH ₄ , or an alkyl group);
One or two or more polymer substances selected from polymer substances having _two groups are employed. That is, specifically,
Sodium alginate, ammonium alginate, carboxymethyl cellulose, carboxymethyl starch, sodium polyacrylate, polyacrylamide, acrylic acid-
Acrylic acid ester copolymer, acrylic acid-acrylamide copolymer, polyacrylic acid, polyacrylic acid ester, methacrylic acid-methacrylic acid ester copolymer, vinyl acetate-maleic anhydride copolymer, and the like. One or two or more polymer substances selected from Among these, sodium polyacrylate, polyacrylamide, and acrylic acid-acrylamide copolymer, which have high affinity with synthetic fibers and are excellent in dyeing properties, are more preferable.

Specific methods for applying the treatment liquid containing the water-soluble polymer substance (A) and the polymer substance (B) to the cloth include a dipping method, a pad method, a screen method, a roller method, a coating method, and the like. Spray method, rotary method and the like can be mentioned. On the other hand, ink jet printing methods include a charge modulation method, a micro dot method, a charge ejection control method, an ink mist method, a continuous method such as a magnetic ink method, and a stemme method, a pulse jet method, a bubble jet (registered trademark) method, An on-demand method such as an electrostatic suction method and a dry jet method is employed.

Examples of the fabric containing the synthetic fiber of the present invention include polyester, polyamide, polyacryl, triacetate, and the like. If at least one kind of these synthetic fibers is included, a material composed of other natural fibers and recycled fibers is used. There may be. Since the method of the present invention is effective for a napped cloth in which migration of a receptor easily occurs, a napped cloth is preferable as the target cloth.

The mixing ratio of the polymers (A) and (B) of the present invention is preferably from 1: 1 to 200: 1.
When the content of (B) is more than 1: 1, the molecular weight of (B) is too large to increase the viscosity, and when the content of (B) is less than 200: 1, the effect of (B) cannot be obtained.

The mixing ratio of the polymers (A) and (B) of the present invention is more preferably 1: 1 to 20: 1. The treatment solution containing the polymer of the present invention includes a pH adjuster, a surfactant, a leveling agent, a carrier, a deep dyeing agent, a penetrant, a catalyst, an oil absorbing agent, a preservative, a holding agent, a plasticizer, Curable resin, crosslinking agent,
Infrared absorbers, ultraviolet absorbers, light resistance improvers, antioxidants, extenders, fluorescent brighteners, adsorbents, antioxidants, sequestering agents, extenders, moisture absorbers, electrolytes, fragrances, antibacterial agents, antibacterial agents Odorants, insect repellents and the like may be selectively added. Next, examples of the present invention will be described. Note that the present invention is not limited to these.

[0033]

【Example】

Example 1 First, a pretreatment liquid 1 was prepared according to the following formulation. Sodium polyacrylate [Marposol S640, manufactured by Matsumoto Yushi Co., Ltd.] 1 part Polyvinyl alcohol [PVA205, manufactured by Kuraray Co., Ltd.] 2 parts Reduction inhibitor (Reactant MS) 1 part Lightfastness improver (Unigard E-200N) 1 part Water balance Total 100 parts 100% polyester napping fabric was desizing and scoured. Next, the above pretreatment liquid was applied by a mangle pad method. Thereafter, hot air drying was performed at 180 ° C. from the ground structure side of the fabric.

Next, ink was applied by an ink jet method. The prescription and conditions are shown below. Ink 1 CI Disperse Red 127 5 parts Anionic surfactant 4 parts Defoamer (Shin-Etsu Silicone KM-70) [manufactured by Shin-Etsu Chemical Co., Ltd.] 0.05 parts Ethylene glycol 3 parts Silicic acid 0.1 part Ion-exchanged water 100 parts remaining

Inkjet printing conditions Printing apparatus: On-demand serial scanning printing apparatus Nozzle diameter: 50 μm Driving voltage: 100 V Frequency: 5 kHz Resolution: 360 dpi

Next, a wet heat treatment was performed at 180 ° C. for 10 minutes. Then, it was immersed in a cleaning solution at a bath ratio of 1: 100 under the following conditions, treated for 30 minutes, and dried. Then
Finally, the hair was adjusted. Washing conditions Sodium hydroxide 1 part Lipitol TC-300 0.2 part Warm water balance 100 parts in total

[0037]

Example 2 A pretreatment liquid 2 was prepared according to the following formulation. Sodium alginate [Superprint, manufactured by Kimitsu Chemical Co., Ltd.] 0.8 parts Polyvinyl alcohol PVA205 2 parts Reduction inhibitor (Reactant MS) 1 part Lightfastness improver (Unigard E-200N) 1 part Water remaining part Total 100 parts Pretreatment The processing was performed in the same manner as in Example 1 except that the liquid 2 was applied by the rotary screen printing method from the napping side of the napping cloth.

[0038]

Example 3 A pretreatment liquid 3 was prepared according to the following formulation. Polyacrylamide [Hiset PN-550, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] 0.3 parts Polyethylene glycol [PEG20000, manufactured by Sanyo Chemical Co., Ltd.] 3 parts Reduction inhibitor (Reactant MS) 1 part Lightfastness improver (Unigard) E-200N) 1 part Water balance Total 100 parts Plain woven cloth of 100% polyester was subjected to ordinary desizing and scouring, and then the above pretreatment liquid 3 was applied by a mangle pad method. Thereafter, hot air drying was performed at 180 ° C. from both upper and lower sides of the cloth. Next, ink was applied by an inkjet method. After processing under the ink formulation, printing conditions and washing conditions of Example 1, the same processing as in Example 1 was performed except that hair was not finally formed.

[0039]

Example 4 A pretreatment liquid 4 was prepared according to the following formulation. Polyacrylic acid ester [Marposol M-1, manufactured by Matsumoto Yushi Co., Ltd.] 1 part Polyethylene glycol [PEG20000, manufactured by Sanyo Chemical Co., Ltd.] 3 parts Reduction inhibitor (Reactant MS) 1 part Light fastness improver (Unigard E-200N) 1 part Water remaining 100 parts Total The treatment was carried out in the same manner as in Example 1 except that the pretreatment liquid 4 was used.

[0040]

Example 5 A pretreatment liquid 5 was prepared according to the following formulation. Methylcellulose [Marporose M-25, manufactured by Matsumoto Yushi Co., Ltd.] 2 parts Carboxymethylcellulose [Fine Gum SP-1, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.] 2 parts Reduction inhibitor (Reactant MS) 1 part Light fastness improver (Unigard) E-200N) 1 part Water balance Total 100 parts The same treatment as in Example 1 was carried out except that the pretreatment liquid 5 was used.

[0041]

Comparative Example 1 As a comparative example, the same treatment as in Example 1 was performed except that PEG 20000 was used instead of Marposol S640 (combination of (A)).

[0042]

Comparative Example 2 As Comparative Example, the same treatment as in Example 2 was carried out except that Fairingham SP-1 (combination of (B)) was used instead of PVA205.

[0043]

Comparative Example 3 As a comparative example, Hiset PN-550 and P
Fairingham SP-1 instead of EG20000
Processing was performed in the same manner as in Example 3 except that [(B) only] was used.

[Evaluation Method] (1) Permeability The permeation distance of the coloring material was measured by an optical microscope. Next, the degree of penetration was calculated using the following equation. Permeability = color material permeation distance / fiber thickness x 100 In the case of a nap-up fabric, the pile length is taken as the fiber thickness. (2) Concentration The concentration on the fiber surface was indicated by the K / S value. (3) Water-average dyeing feeling Leveling feeling on the surface The leveling feeling on the fiber surface was visually evaluated. Judgment criteria ：: uniform ○: slight unevenness but no problem ×: unevenness (4) Vertical level dyeing The level dyeing of the fiber cross section was visually evaluated. In addition, in the case of the upholstery fabric, the leveling feeling of one pile was visually evaluated. Criteria ◎: uniform ○: slight unevenness but no problem ×: unevenness

[Evaluation Results] From the results shown in Table 1, it was found that when the polymers A and B were used in combination as a pretreatment agent, good levelness was obtained. That is, it is understood that the concentration of the water-soluble polymer A is related to the concentration and the polymer B is related to the permeability.

[0046]

[Table 1]

[0047]

As described above, since the migration phenomenon of the glue (ink receptor), which has been a problem, has been effectively used, the phenomenon of insufficient penetration of the coloring material, It is possible to improve the feeling of irritability, the eyes of a blanket, and the like. Naturally, since the treatment liquid permeates not only on the surface but also inside, the coloring material is used efficiently, which is advantageous in terms of cost. Further, by applying the present invention to a napping cloth, an image having a depth unique to the napping cloth can be manufactured, and application to interior materials such as automobile interior materials and tapestries can be expected. It is of course possible to apply it to

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D06P 3/00 D06P 3/00 M 5/20 5/20 B // C08L 101/06 C08L 101/06 101 / 14 101/14 (72) Inventor Haruoka Kubota 1-10-1 Koya, Fukui-shi, Fukui Prefecture F-term (reference) in Salen Co., Ltd. 3B154 AA07 AB20 AB24 BA09 BA14 BB33 BD18 BF12 DA13 DA30 4H057 AA02 CA13 CA22 CB04 CB05 CB08 CB27 CC01 DA01 DA17 GA06 HA01 HA18 JA10 JB01 4J002 AB02X AB03W AB04X AB05X BE02W BF02X BG01X BG04X CH02W GK02

Claims (7)

[Claims] When a textile comprising at least a part or all of the fibers constituting a fabric is made of synthetic fibers by ink-jet printing, the following water-soluble polymer (A) and polymer (B) are preliminarily applied to the fabric. An ink-jet printing method comprising applying a treatment liquid to be contained and drying. (A): one or more water-soluble polymer materials selected from cellulose ethers having no carbonyl group and water-soluble synthetic polymer materials having a hydroxyl group at the terminal of the molecule (B): -COOM group in the molecule (M is H, Na, K,
Represents NH ₄ or an alkyl group. ), And one or more polymer substances selected from polymer substances having a -CONH ₂ group 2. The ink-jet printing method according to claim 1, wherein the cloth is a nap cloth. 3. The water-soluble polymer substance (A) is selected from the group consisting of cellulose ethers including methylcellulose, ethylcellulose, and hydroxyethylcellulose, polyvinyl alcohol, polyethylene glycol, polypropylene glycol, and polyoxyethyleneoxypropylene copolymers. 3. The ink jet printing method according to claim 1, wherein the ink jet printing method comprises two or more water-soluble polymer substances. 4. The polymer substance (B) is sodium alginate, ammonium alginate, carboxymethylcellulose, carboxymethyl starch, sodium polyacrylate, polyacrylamide, acrylic acid-acrylic ester copolymer, acrylic acid-acrylamide copolymer. Coalescing,
The polymer material is one or more polymer substances selected from polyacrylic acid, polyacrylic acid ester, methacrylic acid-methacrylic acid ester copolymer, and vinyl acetate-maleic anhydride copolymer. Inkjet printing method. 5. After applying a treatment liquid containing a water-soluble polymer substance (A) and a polymer substance (B) to a fabric, when drying, a heating medium and a heat medium are applied from the opposite side to which the treatment liquid has been applied. And / or drying treatment with hot air.
5. The ink jet printing method according to item 4. 6. The ink jet printing method according to claim 1, wherein the mixing ratio of the water-soluble polymer (A) and the polymer (B) is from 1: 1 to 200: 1. 7. A printed matter obtained by the printing method according to claim 1.