JP2013181265A - Dyeing technique and dyed thing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dyeing technique by which strike through to a rear face of a cloth is satisfactory and a dyeing part superior in coloring can be shaped and a dyed thing having the dyeing part which both front and rear faces are superior in coloring.SOLUTION: A dyeing technique to shape a dyeing part to a cloth by sublimating and copying sublimable dyestuff comprises the steps of: extending the cloth; getting a transcription medium by giving the sublimable dyestuff to a recording medium: and copying the sublimable dyestuff to the cloth by heating the transcription medium with a state that the extended cloth and the transcription medium face each other. It is preferable that a processed image obtained by image processing applied to an image to be shaped on the cloth is shaped by giving the sublimable dyestuff to the recording medium in accordance with an elongation percentage of the cloth.

Description

  The present invention relates to a staining method and a dyed product.

Dyeing of fabrics and the like using sublimation transfer is widely performed. As a dyeing method using such sublimation transfer, an intermediate transfer medium is obtained by applying an ink containing a sublimation dye (sublimation transfer ink) to a sheet-like recording medium such as paper by an ink jet method, and a cloth or the like. A method of superimposing the intermediate transfer medium on the object to be dyed and performing sublimation transfer by heating is used (for example, see Patent Document 1). When such sublimation transfer is used, dyeing with high color development can be performed.
However, sufficient color developability can be obtained on the surface of the object to be dyed facing the intermediate transfer medium, but it cannot be sufficiently dyed to the back side of the object to be dyed (back-through), and color development on the back side. Sex was not enough.

International Publication No. 2005/121263 Pamphlet

  An object of the present invention is to provide a dyeing method capable of efficiently forming a dyed portion having good penetration through to the back side of a fabric and excellent in color developability, and dyeing excellent in color developability on both the front and back sides. It is in providing the dyeing | staining which has a part.

Such an object is achieved by the present invention described below.
The dyeing method of the present invention is a dyeing method for forming a dyed portion on a fabric by sublimating and transferring a sublimable dye,
Stretching the fabric;
A step of obtaining a transfer medium by applying the sublimation dye to a recording medium;
A step of transferring the sublimation dye to the fabric by heating the transfer medium in a state where the stretched fabric and the transfer medium are opposed to each other.
As a result, the back-through is generated satisfactorily, and not only the color development of the surface (front surface) facing the transfer medium of the fabric but also the color development of the surface (back surface) opposite to the transfer medium of the fabric is good. can do.

In the dyeing method of the present invention, a processed image obtained by performing image processing on an image to be formed on the fabric in accordance with the stretch ratio of the fabric may be formed by applying the sublimation dye to the recording medium. preferable.
As a result, a desired image can be obtained more reliably when the stretch of the fabric is returned.
In the dyeing method of the present invention, the fabric is preferably stretched in at least two directions.
Thereby, the space | interval of the fiber of a fabric can be expanded further and a back-through can be generated more effectively.
In the dyeing method of the present invention, the fabric is composed of warp and weft.
It is preferable that the fabric is stretched in the direction of the warp and the direction of the weft.
Thereby, the show-through can be generated more effectively, and the color developability of the back side of the dyed product can be further improved.

In the dyeing method of the present invention, the transfer medium is preferably obtained by applying a sublimation transfer ink containing the sublimable dye and water to the recording medium by an inkjet method.
As a result, the dyed portion to be formed requires aesthetics, and even if the dyed portion has a complicated shape and a fine shape, the dyed portion is easily and reliably formed as having a desired shape. be able to. In addition, since the ink jet method is excellent in on-demand characteristics, it can be suitably adapted to multi-product production and small-quantity production.
The dyed product of the present invention is produced using the method of the present invention.
Thereby, the dyeing | staining thing which has the dyeing | staining part excellent in color development property on the surface and the back surface can be provided.

It is a schematic diagram which shows an example of the expansion | extension apparatus for extending | stretching a fabric.

Hereinafter, preferred embodiments of the present invention will be described in detail.
≪Dyeing method≫
First, the staining method of the present invention (method for producing a dyed product) will be described.
In the dyeing method of the present invention, a dyed portion is formed on a fabric by sublimating and transferring a sublimable dye.

  By the way, dyeing | staining with respect to the fabric etc. using sublimation transfer is performed widely. As a dyeing method using such sublimation transfer, an intermediate transfer medium is obtained by applying an ink containing a sublimation dye (sublimation transfer ink) to a sheet-like recording medium such as paper by an ink jet method, and a cloth or the like. A method is used in which the intermediate transfer medium is superposed on the object to be dyed, and sublimation transfer is performed by heating. When such sublimation transfer is used, dyeing with high color development can be performed.

However, sufficient color developability can be obtained on the surface of the object to be dyed facing the intermediate transfer medium, but it cannot be sufficiently dyed to the back side of the object to be dyed (back-through), and color development on the back side. Sex was not enough.
On the other hand, in the dyeing method of the present invention, a step of stretching the fabric (first step), a step of obtaining a transfer medium by applying a sublimation dye to the recording medium (second step), By having the step of transferring the sublimation dye to the fabric by heating the transfer medium in a state where the stretched fabric and the transfer medium are opposed to each other (third step), the show-through is generated satisfactorily. Thus, not only the color developability of the surface (front surface) facing the transfer medium of the fabric but also the color developability of the surface (back surface) opposite to the transfer medium of the fabric can be improved.
That is, by stretching the fabric to increase the gap between the fibers constituting the fabric, the transferred sublimable dye can easily escape to the back surface through the gap. As a result, the show-through occurs satisfactorily and the color developability on the front and back surfaces is good.

Hereinafter, each process will be described.
<First step>
In the first step, the fabric is stretched.
By stretching the fabric, the gaps between the fibers constituting the fabric are widened, and the transferred sublimation dye is likely to pass through. As a result, it is possible to form a dyed material that exhibits excellent color developability on the front and back surfaces.

Such expansion can be performed using, for example, an expansion device 10 as shown in FIG.
The stretching device 10 includes two relay rollers 2 and 3 that relay the cloth 1 supplied from a cloth supply unit (not shown), and a stretching unit 4 provided between the relay roller 2 and the relay roller 3. Yes.

In the stretching device 10, the fabric 1 is configured to be conveyed in the right direction in the figure.
And the extending | stretching means 4 is comprised so that a fabric may be extended | stretched by pulling a fabric in the direction of X in the figure.
In the stretching device 10 in FIG. 1, the stretching device 10 stretches in one direction (longitudinal direction of the fabric 1), but may further include stretching means that stretches in the width direction of the fabric 1.
That is, the fabric 1 may be stretched in two directions. By stretching in two directions, the fiber spacing of the fabric 1 can be further increased, and the back-through can be more effectively generated.

Further, when the fabric is composed of warp and weft, it is preferable to stretch the fabric in two directions, that is, the direction of the warp and the direction of the weft. Thereby, the show-through can be generated more effectively, and the color development on the back surface can be further improved.
Further, it is preferable that the stretch rate is changed according to the type of fiber. Thereby, the show-through can be generated more effectively, and the color development on the back side can be further improved.

<Second step>
In this step, a transfer medium is obtained by applying a sublimable dye to the recording medium.
An image formed with a sublimation dye is formed on the transfer medium. The image is a processed image obtained by performing image processing on an image to be formed on a fabric.
That is, an image subjected to image processing (processed image) is formed in accordance with the stretch rate of the fabric. As a result, a desired image can be obtained more reliably when the stretch of the fabric is returned.

<Third step>
In this step, the transfer medium is heated in a state where the stretched fabric is opposed to the transfer medium to which the sublimation dye is applied to the recording medium. As a result, the transfer of the sublimation dye to the fabric proceeds, the back-through occurs sufficiently, and a dyed portion having a sufficient color density is formed on the front surface and the back surface. As a result, a dyed product is obtained.

  The heating temperature in this step is preferably 160 ° C. or higher and 220 ° C. or lower, and more preferably 170 ° C. or higher and 200 ° C. or lower. Thereby, in this step, the sublimable dye can be sublimated and transferred efficiently and reliably, and the productivity of the dyed product can be made particularly excellent. In this step, the transfer medium is not heated more than necessary, which is preferable from the viewpoint of energy saving.

  In addition, although the heating time in this step depends on the heating temperature, it is preferably 30 seconds or longer and 90 seconds or shorter, and more preferably 45 seconds or longer and 60 seconds or shorter. Thereby, the sublimable dye can be sublimated and transferred efficiently and reliably, and the productivity of the dyed product can be made particularly excellent. Moreover, since the energy usage-amount in the whole manufacture of dyeing | staining can be suppressed, it is preferable also from a viewpoint of both energy.

  In addition, this step may be performed by heating the transfer medium in a state of facing the fabric (the object to be dyed), but it is preferable to perform the heating by heating the transfer medium and the fabric in close contact with each other. . As a result, the energy required for transfer can be reduced and the productivity of dyed products can be made particularly excellent. Moreover, the dyeing | staining part of a desired shape can be formed more reliably and the reliability of dyeing | staining thing can be made especially excellent.

  In addition, this step may be performed by heating the transfer medium in a state of facing the fabric (the object to be dyed), but it is preferable to perform the heating by heating the transfer medium and the fabric in close contact with each other. . As a result, the energy required for transfer can be reduced and the productivity of dyed products can be made particularly excellent. Moreover, the dyeing | staining part of a desired shape can be formed more reliably, and the reliability of the dyeing | staining obtained finally can be made excellent.

<Transfer media>
Hereinafter, the transfer medium will be described in detail.
The transfer medium formed in this step is formed by adding a sublimation dye to the recording medium, and applying the sublimation transfer ink containing the sublimation dye and water to the recording medium by an inkjet method. It is preferable that it was obtained by. Thus, the dyed portion to be formed is required to be aesthetic, and even if it has a complicated shape and a fine shape, the dyed portion is easily and reliably formed as having a desired shape. Can do. In addition, since the ink jet method is excellent in on-demand characteristics, it can be suitably adapted to multi-product production and small-quantity production.

[recoding media]
Hereinafter, a recording medium constituting the transfer medium will be described.
As the recording medium to which the sublimation transfer ink is applied, for example, plain paper, a recording medium provided with an ink receiving layer (referred to as exclusive paper for ink-jet or coated paper), etc. can be used. Paper having an ink receiving layer made of inorganic fine particles such as the like is preferable. Accordingly, an intermediate recorded matter in which bleeding or the like is suppressed can be obtained in the process of drying the sublimation transfer ink applied to the recording medium.
The application of the sublimation transfer ink (ink application process) to the recording medium can be suitably performed by using an ink jet method.

The ink for sublimation transfer by the inkjet method can be discharged using a known droplet discharge device.
As a droplet discharge method (inkjet method), a piezo method or a method of discharging ink by bubbles generated by heating the ink can be used. From the viewpoint of difficulty, the piezo method is preferable.
In the production of the transfer medium (ink application step), a plurality of types of inks may be used. Thereby, for example, the color gamut that can be expressed can be made wider.

<Fabric>
Hereinafter, the fabric will be described.
As the fabric (substance to be dyed), for example, those composed of fibers such as polyester fiber, nylon fiber, triacetate fiber, diacetate fiber, polyamide fiber, and the like can be used. Moreover, the blended product of 2 or more types of fibers selected from the above may be sufficient. Moreover, you may use the blended products of these with regenerated fibers, such as rayon, or natural fibers, such as cotton, silk, and wool. In particular, the fabric is preferably composed of polyester fibers. Thereby, the back-through can be generated more favorably.

≪Dyeing≫
Next, the dyeing | staining thing of this invention is demonstrated.
The dyed product of the present invention is produced using the dyeing method of the present invention as described above. Thereby, the dyeing | staining thing which has the dyeing | staining part of sufficient color density (optical density) can be provided on the surface and back surface.
The dyed product of the present invention may be used for any purpose, and examples thereof include clothing such as T-shirts and trainers, and banners.

As mentioned above, although this invention was demonstrated based on suitable embodiment, this invention is not limited to these.
For example, in the dyeing method of the present invention, in addition to the steps as described above, the dyeing method may further include other steps (a pretreatment step, an intermediate treatment step, and a post treatment step).
Hereinafter, the sublimation transfer ink containing the sublimation dye and water will be described.

[Ink for sublimation transfer]
(water)
Water functions as a dispersion medium for dispersing a sublimable dye described in detail later.
As described above, when the sublimation transfer ink contains water, the viscosity and surface tension of the sublimation transfer ink can be suitably adjusted so as to be within a preferable range. The property can be made excellent. Moreover, since water is a component that can be easily removed after ejection by the ink jet method, it is also important for increasing the productivity of the dyed product. In addition, since water is a substance that is extremely safe for the human body and the like, it is important for ensuring the safety of workers in the production of dyed products.
The content of water in the sublimation transfer ink is not particularly limited, but is preferably 50% by mass or more and 90% by mass or less, and more preferably 55% by mass or more and 70% by mass or less.

(Sublimation dye)
The sublimable dye is a dye having a property of sublimation by heating.
As the sublimation dye, a disperse dye, a solvent dye or the like having the above properties can be used. Specific examples of such dyes include C.I. I. Disperse yellow 3, 7, 8, 23, 39, 51, 54, 60, 71, 86; C.I. I. Disperse orange 1, 1: 1, 5, 20, 25, 25: 1, 33, 56, 76; C.I. I. Disperse brown 2; C.I. I. Disperse thread 11, 50, 53, 55, 55: 1, 59, 60, 65, 70, 75, 93, 146, 158, 190, 190: 1, 207, 239, 240; I. Vat Red 41; I. Disperse violet 8, 17, 23, 27, 28, 29, 36, 57; C.I. I. Disperse Blue 19, 26, 26: 1, 35, 55, 56, 58, 64, 64: 1, 72, 72: 1, 81, 81: 1, 91, 95, 108, 131, 141, 145, 359 C. I. Solvent blue 36, 63, 105, 111 etc. are mentioned. These may be used alone or in combination of two or more.

  Among these, from the viewpoint of storage stability of the sublimation transfer ink, C.I. I. Disperse yellow 3, 7, 8, 23, 51, 54, 60, 71, 86; C.I. I. Disperse orange 20, 25, 25: 1, 56, 76; C.I. I. Disperse brown 2; C.I. I. Disperse thread 11, 53, 55, 55: 1, 59, 60, 65, 70, 75, 146, 190, 190: 1, 207, 239, 240; C.I. I. Vat Red 41; I. Disperse violet 8, 17, 23, 27, 28, 29, 36, 57; C.I. I. Disperse blue 26, 26: 1, 55, 56, 58, 64, 64: 1, 72, 72: 1, 81, 81: 1, 91, 95, 108, 131, 141, 145, 359; I. Solvent blue 36, 63, 105, 111 and the like are more preferable.

(solvent)
The sublimation transfer ink may contain a solvent in addition to the components described above. Examples of the solvent include polyol compounds and glycol ethers. Examples of the polyol compound include a polyol compound (preferably a diol compound) having 2 to 6 carbon atoms in the molecule and having one ether bond in the molecule. Specific examples include glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol. 2,3-butanediol, 3-methyl-1,3-butanediol, 1,2-pentanediol, 1,5-pentanediol, 2-methyl-2,4-pentanediol, 3-methyl-1, Examples include 5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, and the like.

  Further, the sublimation transfer ink may contain glycol ether. As the glycol ether, for example, a monoalkyl ether of glycol selected from ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol and tripropylene glycol is preferable. More specifically, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, dipropylene glycol monopropyl ether and the like can be preferably exemplified.

(Other ingredients)
The sublimation transfer ink may contain components other than those described above (other components). Examples of such components include trehaloses, dispersants, antiseptic / antifungal agents, pH adjusting agents, chelating reagents, rust preventing agents, ultraviolet absorbers, antifoaming agents, surface tension adjusting agents, and polysiloxane compounds. .

  Trehalose refers to a disaccharide in which two molecules of glucose are bonded to each other through reducing groups, and α, α-trehalose (O-α-D-glucopyranosyl α-D-glucopyranoside, hereinafter referred to as “trehalose”. ), Α, β-trehalose (hereinafter referred to as “neotrehalose”), β, β-trehalose (hereinafter referred to as “isotrehalose”), and the like.

  When the sublimation transfer ink contains a dispersant, the dispersion stability of the sublimation dye in the sublimation transfer ink can be made particularly excellent, the storage stability of the sublimation transfer ink, and the long-term of the sublimation transfer ink. In particular, the discharge stability can be made particularly excellent. In addition, the reliability of the dyed product produced using the sublimation transfer ink can be made particularly excellent.

The dispersant is not particularly limited, and examples thereof include an anionic dispersant, a nonionic dispersant, and a polymer dispersant.
Preferred examples of the anionic dispersant include a formalin condensate of aromatic sulfonic acid.
Examples of the “aromatic sulfonic acid” in the formalin condensate of aromatic sulfonic acid include creosote oil sulfonic acid, cresol sulfonic acid, phenol sulfonic acid, β-naphthol sulfonic acid, methyl naphthalene sulfonic acid, butyl naphthalene sulfonic acid and the like. Alkylnaphthalenesulfonic acid, a mixture of β-naphthalenesulfonic acid and β-naphtholsulfonic acid, a mixture of cresolsulfonic acid and 2-naphthol-6-sulfonic acid, and ligninsulfonic acid.

As the anionic dispersant, a formalin condensate of β-naphthalene sulfonic acid, a formalin condensate of alkyl naphthalene sulfonic acid, and a formalin condensate of creosote oil sulfonic acid are preferable.
Nonionic compounds include phytosterol ethylene oxide adducts and cholestanol ethylene oxide adducts.

In the present specification, “phytosterol” means to include both phytosterol and hydrogenated phytosterol. For example, the ethylene oxide adduct of phytosterols includes an ethylene oxide adduct of phytosterol, an ethylene oxide adduct of hydrogenated phytosterol, and the like.
Similarly, in the present specification, “cholestanol” is meant to include both cholestanol and hydrogenated cholestanol. For example, the ethylene oxide (EO) adduct of cholestanol includes an ethylene oxide adduct of cholestanol, an ethylene oxide adduct of hydrogenated cholestanol, and the like. The amount of ethylene oxide added per mole of phytosterol or cholestanol is preferably 10 mol or more and 50 mol or less and HLB is 13 or more and 20 or less.

Examples of the polymer dispersant include polyacrylic acid partial alkyl esters, polyalkylene polyamines, polyacrylic acid salts, styrene-acrylic acid copolymers, vinyl naphthalene-maleic acid copolymers, and the like.
Examples of antiseptic / antifungal agents include organic sulfur, organic nitrogen sulfur, organic halogen, haloallylsulfone, iodopropargyl, N-haloalkylthio, benzothiazole, nitrile, pyridine, 8- Oxyquinoline, isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiadiazine, anilide, adamantane, dithiocarbamate, brominated indanone And compounds such as benzyl bromacetate and inorganic salts. Examples of the organic halogen compound include sodium pentachlorophenol, and examples of the pyridine oxide compound include sodium pyridinethione-1-oxide and zinc pyridinethione-1-oxide, and isothiazoline-based compounds. Examples of the compound include an amine salt of 1-benzisothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, and 5-chloro-2-methyl. -4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one magnesium chloride, 5-chloro-2-methyl-4-isothiazolin-3-one calcium chloride, 2-methyl-4 -Isothiazoline-3-one calcium chloride and the like . Other antiseptic / antifungal agents include sodium dehydroacetate, sodium sorbate, sodium benzoate and the like.

When the sublimation transfer ink contains a pH adjuster, the storage stability of the sublimation transfer ink can be made particularly excellent. In addition, the reliability of the dyed product produced using the sublimation transfer ink can be made particularly excellent.
As the pH adjuster, for example, an agent capable of controlling the pH of the sublimation transfer ink in the range of 6.0 to 11.0 can be suitably used. Examples of such pH adjusters include alkanolamines such as diethanolamine, triethanolamine, dimethylethanolamine, and diethylethanolamine; alkaline metal water such as lithium hydroxide, sodium hydroxide, potassium hydroxide, and lithium hydroxide. Examples thereof include oxides; ammonium hydroxide; carbonates of alkali metals such as lithium carbonate, sodium carbonate, and potassium carbonate; aminosulfonic acids such as taurine;

Examples of the chelating reagent include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate, and the like.
Examples of the antirust agent include acidic sulfites, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite, and benzotriazole compounds.

Examples of ultraviolet absorbers include benzophenone compounds, cinnamic acid compounds, triazine compounds, stilbene compounds, so-called fluorescent brighteners (compounds that absorb ultraviolet rays typified by benzoxazole compounds), and the like. Is mentioned.
Examples of antifoaming agents include highly oxidized oil compounds, glycerin fatty acid ester compounds, fluorine compounds, silicone compounds, and acetylene compounds.
Examples of the surface tension adjusting agent include a surfactant, and examples thereof include an anionic surfactant, an amphoteric surfactant, a cationic surfactant, and a nonionic surfactant.

  Examples of the anionic surfactant include alkyl sulfocarboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and salts thereof, N-acylmethyl taurate, alkyl sulfate poly Oxyalkyl ether sulfate, alkyl sulfate polyoxyethylene alkyl ether phosphate, rosin acid soap, castor oil sulfate ester, lauryl alcohol sulfate ester, alkylphenol type phosphate ester, alkyl type phosphate ester, alkylaryl sulfonate, diethyl Examples include sulfosuccinate, diethylhexylsylsulfosuccinate, and dioctylsulfosuccinate.

Examples of the amphoteric surfactant include lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctylpolyaminoethylglycine, and others. Examples include imidazoline derivatives.
Examples of the cationic surfactant include 2-vinylpyridine derivatives and poly-4-vinylpyridine derivatives.

  Nonionic surfactants include, for example, polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene dodecyl phenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether, and the like. Ether surfactants: polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate Ester surfactants such as rate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne- , 6-diol, 3,5-dimethyl-1-hexyne-3-acetylene glycol (alcohol) based surfactants such as ol.

By including the polysiloxane compound in the sublimation transfer ink, it is possible to improve the discharge response of the droplet discharge by the ink jet method. Examples of the polysiloxane compound include polyether-modified siloxane and polyether-modified polydimethylsiloxane.
The surface tension (surface tension at 25 ° C.) of the sublimation transfer ink is preferably 20 mN / m or more and 50 mN / m or less, and more preferably 25 mN / m or more and 40 mN / m or less. Note that the surface tension of the sublimation transfer ink can be determined, for example, by measurement according to JIS K3362 using a surface tension meter CBVP-A3 (manufactured by Kyowa Interface Science Co., Ltd.).

  The viscosity of the sublimation transfer ink (viscosity at 25 ° C.) is preferably 2 mPa · s or more and 20 mPa · s or less. As a result, the discharge stability of the sublimation transfer ink (discharge volume stability, flight characteristics of droplets, etc.), discharge response (response speed, high frequency compatibility (frequency characteristics), etc.), etc. are particularly excellent. be able to. The viscosity of the sublimation transfer ink can be determined by measurement in accordance with JIS Z8809 using a vibration viscometer.

[1] Production of sublimation transfer ink A sublimation transfer ink was produced as follows.
(Preparation Example 1)
First, C.I. as a sublimable dye. I. Disperse Yellow 54, a mixture of styrene-acrylic acid copolymer as a polymer dispersant and ion-exchanged water is dispersed for about 15 hours under cooling with a sand mill using 0.2 mm diameter glass beads. The treatment was performed. After the dispersion treatment, ion-exchanged water is added for dilution, and then the dispersion is filtered through glass fiber filter paper GC-50 (manufactured by Toyo Filter Paper Co., Ltd., filter pore size 0.5 μm) to remove components having a large particle size. An aqueous dispersion was obtained.
Next, sublimation transfer ink was obtained by mixing the aqueous dispersion obtained as described above, trehalose, triethylene glycol monomethyl ether, and ion-exchanged water in a predetermined ratio.

The resulting ink composition of Preparation Example 1 is as follows.
C. I. Disperse Yellow 54 2.5% by mass
Styrene-acrylic acid copolymer 1.0 mass%
Triethylene glycol monomethyl ether 1.0% by mass
Propylene glycol 2.0% by mass
Trehalose 20.0% by mass
Ion exchange water 73.5% by mass
Total 100% by mass

  Further, the surface tension at 25 ° C. (surface tension obtained by measurement according to JIS K3362 using a surface tension meter CBVP-A3 (manufactured by Kyowa Interface Science Co., Ltd.)) for the sublimation transfer ink of Preparation Example 1 is These were all included in the range of 25 mN / m or more and 40 mN / m or less. In addition, the viscosity at 25 ° C. of the sublimation transfer ink of Preparation Example 1 (viscosity obtained by measurement in accordance with JIS Z8809 using a vibration viscometer) is 2 mPa · s or more and 20 mPa · s or less. It was included in the range.

[2] Manufacture of dyed material Dyeing using ink for sublimation transfer was performed as follows to manufacture a dyed material.
Example 1
First, the sublimation transfer ink obtained in Preparation Example 1 was charged into an ink jet apparatus.
On the other hand, a long fabric (dye to be dyed) made of polyester fibers was stretched in the width direction and the longitudinal direction (first step). The elongation rate was 150%.
Thereafter, paper having an ink receiving layer made of a material containing silica is prepared as a recording medium, and sublimation transfer ink is ejected in a predetermined pattern onto the ink receiving layer of the recording medium to obtain a transfer medium. (Second step).
Next, the surface on the ink receiving layer side of the transfer medium obtained as described above is brought into close contact with a fabric composed of polyester fibers (a fabric to be dyed, a woven fabric having warp and weft), and in this state, It heated on the conditions of 190 degreeC * 45 second using the Taiyo Seiki Co., Ltd. heat press machine TP-608M (3rd process). This gave a dyed product.
(Examples 2-9)
A dyed product was produced in the same manner as in Example 1 except that the stretch rate of the fabric and the heating conditions were as shown in Table 2. The image formed on the transfer medium was a processed image that had been subjected to image processing at the same stretch rate as the fabric.

(Comparative Example 1)
A dyed product was produced in the same manner as in Example 1 except that the fabric was not stretched.
(Comparative Examples 2 and 3)
A dyed product was produced in the same manner as in Comparative Example 1 except that the heating conditions were as shown in Table 2.

[3] Back-through evaluation For the dyed product produced in the above [2], the optical density OD1 of the dyed portion and the portion corresponding to the dyed portion on the surface opposite to the surface facing the transfer medium The optical density OD2 was determined by measurement using SpectroScan (manufactured by GretagMacbeth). The value of OD2 / OD1 was determined and evaluated according to the following criteria. It can be said that the lower the value of OD2 / OD1, the more effectively the show-through is prevented.
A: The value of OD2 / OD1 is 0.85 or more.
B: The value of OD2 / OD1 is smaller than 0.85.

Table 1 shows the production conditions of the dyed products of the above Examples and Comparative Examples, and the results of the above evaluation.
As is apparent from Table 1, in the present invention, the back-through occurred satisfactorily, and the dyed product obtained was excellent in color development on both the front surface and the back surface. On the other hand, in the comparative example, the back-through was not sufficient, and the color development on the back surface was not sufficient.

DESCRIPTION OF SYMBOLS 1 ... Fabric 2, 3 ... Relay roller 4 ... Stretching means 10 ... Stretching device

Claims (6)

A dyeing method for forming a dyed portion on a fabric by sublimating and transferring a sublimable dye,
Stretching the fabric;
A step of obtaining a transfer medium by applying the sublimation dye to a recording medium;
And a step of transferring the sublimable dye to the fabric by heating the transfer medium in a state where the stretched fabric and the transfer medium face each other.   The dyeing | staining method of Claim 1 which forms the processed image which image-processed to the image which should be formed in the said fabric according to the expansion | extension rate of the said fabric by providing the said sublimation dye to the said recording medium.   The dyeing method according to claim 1 or 2, wherein the fabric is stretched in at least two directions. The fabric is composed of warp and weft,
The dyeing method according to any one of claims 1 to 3, wherein the fabric is stretched in the direction of the warp and the direction of the weft.   5. The transfer medium according to claim 1, wherein the transfer medium is obtained by applying a sublimation transfer ink containing the sublimable dye and water to the recording medium by an inkjet method. Dyeing method.   A dyed product produced using the method according to any one of claims 1 to 5.

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