WO2021166587A1

WO2021166587A1 - Transfer printing method for fabric and transfer printing device for fabric

Info

Publication number: WO2021166587A1
Application number: PCT/JP2021/003165
Authority: WO
Inventors: 宜康碓氷
Original assignee: 株式会社ミマキエンジニアリング
Priority date: 2020-02-18
Filing date: 2021-01-29
Publication date: 2021-08-26

Abstract

[Problem] To suitably execute transfer printing from a transfer paper. [Solution] This transfer printing method has a transfer step for transferring, onto a fabric 7, a graphic pattern printed on a transfer paper 2 through pressure-bonding between the fabric 7 and the transfer paper 2 on which the graphic pattern is printed with an ink including a reaction dye. The transfer printing method further has, after the transfer step, a fixing step for fixing the graphic pattern transferred to the fabric 7 by heat treating the fabric 7 onto which the graphic pattern is transferred.

Description

Fabric transfer printing method and fabric transfer printing device

The present invention relates to a cloth transfer printing method and a cloth transfer printing device.

Patent Document 1 discloses a transfer printing method for cellulose or cellulose-blended fibers.

Japanese Unexamined Patent Publication No. 53-134978

In the transfer printing method of Patent Document 1, a transfer paper for sublimation transfer on which a desired pattern is printed is superposed on a pretreated cellulosic cotton cloth, and then the reaction is carried out by pressurizing while heating with steam. The pattern printed with the ink containing the dye is transferred from the transfer paper to the cotton cloth.
In this transfer printing method, heat and pressure are simultaneously applied to the overlapped transfer paper and cotton fabric to transfer and fix the pattern printed with ink containing a reactive dye to the cotton fabric to be transferred. ..

It is required to be able to perform transfer printing from transfer paper more appropriately.

One aspect of the present case is a transfer printing method comprising a transfer step of transferring a pattern printed on the transfer paper to the cloth by pressure bonding between the transfer paper on which the pattern is printed with ink containing a reactive dye and the cloth. ,
Further, after the transfer step, there is a fixing step of fixing the transferred pattern to the cloth by heat treatment of the cloth to which the pattern is transferred.

The inventor of the present invention is keen on the cause that the accuracy of the pattern transferred to the cloth is lowered when the pattern is transferred to the cloth by pressure bonding between the transfer paper and the cloth and the pattern is fixed to the cloth by steam heat treatment at the same time. investigated.
resulting in,
(A) Moisture contained in the fabric is vaporized by the high temperature of the steam heat treatment for fixing the reactive dye to the fabric, and the reactive dye is incorporated into the vaporized moisture.
(B) It was found that a phenomenon called "color crying" occurs when a part of the reactive dye moves along the texture of the fabric together with the vaporized water, and the accuracy of the pattern is lowered.
Therefore, in order to suppress the vaporization of water during transfer, it was found that "color crying" can be improved by transferring the pattern and fixing the transferred pattern separately instead of at the same time. Thereby, the transfer printing from the transfer paper to the fabric can be performed more appropriately.

That is, by separating the transfer process and the fixing process, it is possible to suppress a defect (color crying) when the two processes are performed together.

One aspect of this case is
The heat treatment is a wet heat treatment in which the fabric on which the pattern is transferred is steam-heated. In the transfer step, the transfer paper and the fabric are pressure-bonded at a temperature equal to or lower than the heating temperature in the wet heat treatment. The design is transferred to the fabric.

By separating the transfer process and the fixing process, it is possible to suppress a defect (color crying) when the two processes are performed together.
When the crimping and the steam heat treatment are performed separately, the time for crimping the transfer paper and the fabric can be shortened as compared with the case where the crimping and the steam heat treatment are performed at the same time, so that the vaporization of the moisture contained in the fabric can be suppressed.
Further, by shortening the crimping time, the distance that the vaporized water moves along the texture of the fabric can be shortened, so that "color crying" can be suppressed. Thereby, the transfer printing from the transfer paper to the fabric can be performed more appropriately.

In one aspect of the present case, in the moist heat treatment, the fabric to which the pattern is transferred is steam-heated with a printing aid interposed therebetween.

Appropriate color development is possible while ensuring the accuracy of the pattern transferred to the fabric.

One aspect of the present invention is a dry heat treatment in which the heat treatment heats the cloth on which the pattern is transferred, and in the transfer step, the transfer paper and the cloth are crimped at a temperature equal to or lower than the heating temperature in the dry heat treatment. By causing the pattern to be transferred to the cloth.

As a result of diligent studies, the inventor of the present invention has found that the transferred pattern can be satisfactorily adhered to the cloth by performing a dry heat treatment that heats the cloth to which the pattern is transferred instead of the steam heat treatment. ..
When steam heat treatment is performed, equipment for supplying steam such as a boiler and piping and fuel for operating the boiler are required, which increases the size of the equipment. In the case of the dry heat treatment, the equipment can be downsized as compared with the case of the steam heat treatment, so that the installation cost and the operation cost of the equipment can be suppressed as compared with the case of the steam heat treatment.

Further, since the time required for the transferred pattern to be fixed to the cloth is shorter in the dry heat treatment than in the steam heat treatment, the time required for the production of the cloth with the transferred pattern can be shortened.

In one aspect of the present case, in the dry heat treatment, the fabric to which the pattern is transferred is heated with a printing aid intervening.

One aspect of this case includes a coating step of applying the printing aid by spraying in a step prior to the fixing step.

The printing aid may be applied to either the cloth or the transfer paper, but the printing aid can be easily applied by applying the printing aid by spraying.
Then, since the printing aid can be easily applied, the printing aid can be applied immediately before the transfer step. If the printing aid is applied to the fabric or transfer paper in advance, there is a concern about the influence of changes in the printing aid over time, but the transfer printing can be performed without causing such a concern.

One aspect of this case is
The coating step is carried out in a step prior to the transfer step.

If the printing aid is applied to the fabric in advance, the color of the fabric may change over time, which may affect the quality of the fabric after transfer printing. By applying the printing aid immediately before the fixing step, the occurrence of such a situation can be suitably prevented.

Further, when a printing aid is applied to the fabric immediately before being overlapped with the transfer paper, the moisture content contained in the fabric can be adjusted to the optimum moisture content for the transfer of the pattern, and then the transfer paper and the fabric can be pressure-bonded.
As a result, the design can be transferred to the fabric under the optimum conditions, so that the accuracy of the design transferred to the fabric can be ensured.

In one aspect of the present case, in the transfer step, the design is transferred to the cloth by crimping the transfer paper and the cloth at a temperature of 100 ° C. or lower.

Color crying can be suppressed by lowering the heating temperature of the transfer process to 100 ° C or less, which is a temperature at which transfer is possible but moisture does not evaporate and steam is not generated.

In one aspect of the present case, in the transfer step, the design is transferred to the cloth by crimping the transfer paper and the cloth in a state where moisture is interposed.

The presence of moisture is required for the transfer of a pattern printed with ink containing a reactive dye to a fabric. With the above configuration, the water content can be adjusted to the optimum water content for the transfer of the pattern.

In one aspect of this case, the moisture is applied to the fabric side.

Moisture may be applied to the transfer paper side, but if water is applied to the transfer paper side, the ink may bleed. Therefore, by applying water to the fabric side on which the pattern is transferred, ink bleeding can be suppressed and transfer printing can be performed more appropriately.

One aspect of the present case is a transfer having a transfer step of transferring the pattern printed on the transfer paper to the cloth by crimping the transfer paper on which the pattern is printed with ink containing a reactive dye and the cloth to which moisture is applied. It ’s a printing method,
Further, it has a fixing step of performing a wet heat treatment of steam heating on the cloth on which the pattern is transferred to fix the pattern transferred to the cloth.
In the transfer step, the design is transferred to the fabric by crimping the transfer paper and the fabric under transfer conditions in which the design can be transferred to the fabric and the steam does not act on the fabric. ..

By separating the transfer process and the fixing process, it is possible to suppress defects (color crying) when the two processes are performed together.

One aspect of the present case is a transfer paper on which a pattern is printed with ink containing a reactive dye, a transfer device that transfers the pattern printed on the transfer paper to the cloth by pressure bonding with the cloth, and a transfer device.
It has a fixing device for fixing the transferred pattern to the cloth by heat-treating the cloth on which the pattern is transferred.

By separately transferring the symbol and fixing the transferred symbol, it is possible to suppress a defect (color crying) when the symbol is transferred and fixed at the same time.

In one aspect of the present case, the fixing device is a wet heat treatment device that steam-heats the cloth on which the pattern is transferred, and in the transfer device, the transfer paper and the cloth are at a temperature equal to or lower than the heating temperature in the wet heat treatment device. By crimping with, the pattern is transferred to the cloth.

When the pattern is transferred to the cloth and the transferred pattern is fixed to the cloth separately, the pattern is transferred to the cloth and the transferred pattern is fixed to the cloth at the same time. Problems (color crying) can be suppressed.
Further, since the time for crimping the transfer paper and the cloth for the transfer of the pattern can be shortened, the amount of water contained in the cloth vaporized at the time of crimping can be suppressed. This also suppresses color crying.

In one aspect of the present case, the fixing device is a dry heat treatment device that heats the cloth on which the pattern is transferred. The design is transferred to the cloth by crimping.

Instead of the steam heat treatment, the dry heat treatment that heats the cloth on which the pattern is transferred can also be performed to satisfactorily fix the transferred pattern to the cloth.
When steam heat treatment is performed, equipment for supplying steam such as a boiler and piping and fuel for operating the boiler are required, which increases the size of the equipment. In the case of the dry heat treatment, the equipment can be downsized as compared with the case of the steam heat treatment, so that the installation cost and the operation cost of the equipment can be suppressed as compared with the case of the steam heat treatment.

According to the present invention, transfer printing from transfer paper can be performed more appropriately.

It is the schematic of the transfer printing apparatus which concerns on embodiment. It is the schematic of the transfer printing apparatus which concerns on modification 1. FIG. It is the schematic of the transfer printing apparatus which concerns on modification 2. FIG.

[Embodiment]
FIG. 1 is a schematic view of the transfer printing apparatus 1 according to the embodiment.
The transfer printing device 1 is a device for transferring and printing a pattern printed on the transfer paper 2 onto the cloth 7.
Here, the term "design" in the present specification does not mean only "gara" or "pattern" of the printed design, but also includes characters, patterns, and the like.

Cloth 7 is a woven fabric composed of plant fibers such as cotton and rayon.
In addition to the plant fibers, the cloth 7 may be a blend of plant fibers and synthetic fibers such as polyester.
Further, the cloth 7 may be a blend of animal fibers such as silk and wool, animal fibers and synthetic fibers such as polyester.
The basis weight of the cloth 7 is preferably 60 to 480 g / m ² , and more preferably 60 to 200 g / m ² .

As shown in FIG. 1, the transfer printing apparatus 1 includes a printing apparatus 10, a pretreatment apparatus 20, a pressurizing apparatus 30 (transfer apparatus), a steaming apparatus 40 (fixing apparatus), a cleaning apparatus 50, and a drying apparatus. It has 60 and.

The printing device 10 prints a pattern for transfer printing on the transfer paper 2.
The printing device 10 may be any device that can print a pattern for transfer printing on the transfer paper 2. The printing method can be appropriately selected from inkjet printing, gravure printing, offset printing, screen printing, and the like.
In this embodiment, the inkjet printing type printing device 10 is adopted.

The transfer paper 2 is not particularly limited as long as it can print a desired pattern on the ink receiving layer. In the present embodiment, the transfer paper 2 provided with the ink receiving layer on the surface of the sheet-shaped base material is adopted.

The base material of the transfer paper 2 may be any as long as it can provide an ink receiving layer. Paper such as art paper, coated paper, print base paper, and thin paper, and films such as polyethylene, polypropylene, cellophane, and aluminum foil can be appropriately selected.
In the present embodiment, since the printing apparatus 10 employs the inkjet printing method, the sublimation type inkjet printing transfer paper is adopted as the transfer paper 2.
Examples of such transfer paper include TRS95-1620 manufactured by Mimaki Engineering Co., Ltd.

When the cloth 7 uses plant fibers, the ink used for printing the pattern preferably contains a reactive dye as a coloring component.
As the reactive dye, a vinyl sulfone dye, a monochlorotriazine dye, a dichlorotriazine dye, a trichlorotriazine dye and the like can be appropriately used.

When the pattern is transferred and printed on the cloth 7 using the plant fiber, the ink may contain only the reactive dye as a coloring component.
When the fabric 7 is a blended fabric of plant fibers and synthetic fibers, the ink is a coloring component of other dyes having a high affinity for both reactive dyes and synthetic fibers, such as disperse dyes and bad dyes. It may be further included as.
When the ink contains a disperse dye or a bad dye in addition to the reactive dye, good printing can be applied to the blended fabric of the plant fiber and the synthetic fiber.

Here, examples of the reactive dye include SPC-0357, Rc210, Rc300, Rc400, Rc500, and MLRc500 manufactured by Mimaki Engineering Co., Ltd.

The pretreatment device 20 applies the pretreatment agent to the fabric 7 before the pattern is transferred and printed.
The pretreatment agent is an aqueous solution containing a dyeing aid (printing aid), and exhibits a function as a pH adjuster for satisfactorily fixing the pattern to the fabric 7.
When the cloth 7 uses plant fibers, it is preferable that at least one or more selected from the following as a dyeing aid is contained in the pretreatment agent.
Sodium hydroxide, ammonium hydroxide, sodium carbonate, sodium hydrogen carbonate, trisodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium tetraborate, trimethylamine, triethanolamine, methylamine and dimethylamine.

The amount of the dyeing aid applied to the cloth 7 is preferably 1 to 6 parts by weight, more preferably 2 to 4 parts by weight, based on 100 parts by weight of the cloth.

In the present embodiment, the dyeing aid is applied to the cloth 7 by spraying the pretreatment agent, which is an aqueous solution containing the dyeing aid, onto the cloth 7.
The dyeing aid may be applied to the cloth 7 by immersing the cloth 7 in the pretreatment agent which is an aqueous solution containing the dyeing aid described above.

In the present embodiment, the water content of the fabric 7 to which the dyeing aid is applied is preferably 55 to 65 owf, more preferably 55 to 60 owf.
Therefore, a heater for heating the cloth 7 after the pretreatment and a sprayer for spraying water on the cloth 7 after the pretreatment are provided between the pretreatment device 20 and the pressurizing device 30 to apply a dyeing aid. The moisture contained in the cloth 7 may be adjusted within the above range.
Here, "owf" (on the weight of fiber) is a weight portion of water with respect to 100 parts by weight of the fabric. 60owf means 60 parts by weight of water content with respect to 100 parts by weight of fabric.

The pressurizing device 30 includes a pair of pressurizing

rollers

31, 31. Between the pair of

pressure rollers

31 and 31, a transfer paper 2 on which a pattern is printed by the printing device 10 and a cloth 7 (cloth 7 after pretreatment) to which a dyeing aid is applied by the pretreatment device 20. , Are supplied in a superposed state.

In the pressurizing device 30, the cloth 7 after the pretreatment and the transfer paper 2 on which the pattern is printed are superposed on each other in front of the pair of pressurizing

rollers

31 and 31.
The transfer paper 2 is superposed on the cloth 7 in a direction in which the printed surface of the pattern is brought into contact with the cloth 7 after the pretreatment.

The pair of

pressure rollers

31 and 31 presses (pressurizes and adheres) the transfer paper 2 and the cloth 7 held between the pair of

pressure rollers

31 and 31 to produce a pattern printed on the transfer paper 2. Transfer to cloth 7.
The pair of

pressure rollers

31 and 31 can rotate around rotation axes X1 and X2 parallel to each other by a drive mechanism (not shown).
The pair of

pressure rollers

31 and 31 rotate around the rotation axes X1 and X2 while crimping the transfer paper 2 and the cloth 7, so that the transfer paper 2 and the cloth 7 are sent to the steaming device 40 side. It has become like.

Seen from the pressurizing device 30, a feeding roller 21 for the transfer paper 2 is provided on the printing device 10 side, and a take-up roller 22 for the transfer paper 2 is provided on the steaming device 40 side.
The transfer paper 2 before printing the pattern is wound around the feeding roller 21. The transfer paper 2 after the pattern is transferred to the cloth 7 is wound around the winding roller 22.
A control device (not shown) rotates the take-up roller 22 in conjunction with the rotation of the pair of

pressure rollers

31 and 31 to wind up the transfer paper 2, so that the transfer paper 2 is wound between the pair of

pressure rollers

31 and 31. The transfer paper 2 on which the pattern is printed is continuously supplied.

A feeding roller 71 for the cloth 7 is provided on the front stage side of the pretreatment device 20 when viewed from the pressurizing device 30. A take-up roller 72 for the cloth 7 is provided on the rear side of the drying device 60.
The cloth 7 before the pretreatment is wound around the feeding roller 71.
After the cloth 7 is pulled out from the feeding roller 71, the pretreatment device 20, the pressurizing device 30 (transfer device), the steaming device 40 (fixing device), the cleaning device 50, and the drying device 60 are arranged in this order. After passing through, it is wound around the take-up roller 72.
A control device (not shown) rotates the take-up roller 72 in conjunction with the rotation of the pair of pressurizing

rollers

31 and 31 to wind up the fabric 7. The fabric 7 immediately after the treatment is continuously supplied.

Here, in the conventionally known transfer printing apparatus, the pressurizing apparatus has a steaming function. The pressurizing device applies high-temperature steam to the transfer paper 2 crimped between the pressurizing

rollers

31 and 31 to transfer the symbol by pressurization and steam heat treatment (steam heating) of the transferred symbol in parallel. And carry out.
This is because the transfer of the pattern to the fabric 7 by crimping and the fixation of the pattern to the fabric 7 by steam heat treatment are performed at about the same time, thereby suppressing the expansion of the scale of the equipment required for the transfer printing of the pattern. be.

The inventor of the present invention has found that when a pattern is transferred and printed on the cloth 7 by a conventionally known transfer printing method in which the pattern is transferred to the cloth 7 and the pattern is fixed at the same time, the following phenomenon occurs.
(A) As the density of the symbol increases, the accuracy of the symbol transferred to the cloth 7 decreases.
(B) The accuracy of the design decreases as the thickness of the fabric 7 increases.
(C) The accuracy of the design decreases as the unevenness of the cloth 7 becomes more remarkable.

For example, when the cloth 7 is a chino cloth (cotton twill fabric) having a thick thickness and remarkable unevenness, a phenomenon in which the dye flows along the texture of the cloth 7 (a phenomenon called “color crying”) is remarkable. This reduces the accuracy of the symbol, especially at the edges of the symbol.

The inventor of the present invention diligently investigated the cause of the decrease in the accuracy of the pattern in the conventional transfer printing method. As a result, the inventor of the present invention states that when the heating temperature is lowered, the accuracy of the symbol is improved while the density of the symbol is decreased, and when the heating temperature is increased, the accuracy of the symbol is decreased and the density of the symbol is increased. I paid attention to.

Here, pressure is required to transfer the pattern. The fixation of the transferred pattern requires the presence of an appropriate amount of water and a high temperature in order for the reactive dye to react with the constituent material of the fabric 7.
When a large pressure and a high temperature are applied to the overlapped transfer paper 2 and the cloth 7 at the same time, the design of the transfer paper 2 is transferred to the cloth 7. The reactive dye contained in the pattern transferred to the cloth 7 reacts by exposure to a high temperature in the presence of moisture and is fixed to the surface of the cloth 7.

The inventor of the present invention focused on the fact that the reactive dye has high solubility in water and that "color crying" occurs along the texture of the cloth 7, and considered the following possibilities.
(A) Due to the high temperature for fixing the reactive dye to the cloth 7, the water contained in the cloth 7 is vaporized by the high temperature, and the reactive dye is taken into the vaporized water (moisture vapor: steam).
(B) A phenomenon called "color crying" occurs when a part of the reactive dye moves along the texture of the cloth 7 together with the vaporized water.

Therefore, in order to suppress the vaporization of water at the time of transfer, the present inventor performs the transfer of the symbol and the fixation of the transferred symbol separately, not at the same time, and transfers the symbol to the steam temperature or lower. It was found that "color crying" was improved when it was carried out only by applying pressure at a lower temperature.

Therefore, in the transfer printing apparatus 1 according to the present embodiment, a steaming apparatus 40 is separately provided between the pressurizing apparatus 30 and the cleaning apparatus 50 in order to separately transfer the symbol and fix the symbol.
Then, in the pressurizing device 30, the overlapped transfer paper 2 and the cloth 7 are crimped to carry out only the transfer of the pattern to the cloth 7. The treatment in the pressurizing device 30 is carried out at a temperature at which the patterns can be transferred from the stacked transfer papers 2 to the fabric 7 and at a temperature at which moisture vapor is not generated. Preferably, the treatment in the pressurizing device 30 is carried out at a temperature equal to or lower than the steaming temperature, more preferably 100 ° C. or lower, still more preferably room temperature (25 ° C.) or a temperature close to normal temperature.

Further, in the steaming device 40 at the subsequent stage of the pressurizing device 30, the steaming heat treatment (steaming treatment: wet heat treatment) of the fabric 7 to which the pattern is transferred is carried out in the presence of the printing aid. The steaming apparatus 40 reacts the reactive dye contained in the ink constituting the transferred pattern with the cloth 7 to fix the pattern to the cloth 7.

Here, in the pressurizing device 30, the crimping force (pressurizing force) acting on the superposed transfer paper 2 and the fabric 7 is preferably 1.0 MPa to 2.0 MPa, more preferably 1.6 MPa. .. The pressurization time is at least 2 seconds.

A steaming device 40 is provided on the downstream side of the pressurizing device 30 in the transport direction of the cloth 7. The steaming device 40 is a steaming machine that exposes the cloth 7 to which the pattern is transferred to high-temperature steam.
In the exposure of the cloth 7 to high-temperature steam (steaming heat treatment: wet heat treatment), the reactive dye contained in the ink constituting the design is reacted with the cloth 7, and the design is permeated into the cloth 7 and fixed. It is carried out to develop the color of the dye.

The conditions for steaming heat treatment in the steaming apparatus 40 are as follows.
The steaming temperature is preferably 90 ° C. to 110 ° C., more preferably 104 ° C.
The steaming time is preferably 10 to 20 minutes, more preferably 15 minutes.
The vapor pressure is from 5 psi to 15 psi, more preferably 8 psi.
As the steaming device 40, the trade name "Steamjet" manufactured by Jacquard Inkjet Fabric is exemplified.

A cleaning device 50 is provided on the downstream side of the steaming device 40 in the transport direction of the cloth 7.
The cleaning device 50 cleans the cloth 7 after the steam heat treatment to remove excess substances such as dyeing aids remaining on the cloth 7 and unreacted reactive dyes.

A drying device 60 is provided on the downstream side of the cleaning device 50 in the transport direction of the cloth 7.
The drying device 60 blows warm air or the like onto the washed cloth 7 to vaporize the moisture remaining in the cloth 7 and dry the cloth 7.

As described above, in the transfer printing apparatus 1, in the pretreatment apparatus 20, the pretreatment agent is sprayed onto the cloth 7 fed from the feeding roller 71, and the printing aid is applied to the cloth 7 (previous). Processing process). In the printing apparatus 10, a pattern is printed on the transfer paper 2 fed from the feeding roller 21 with ink using a reactive dye (printing step).

The transfer paper 2 on which the pattern is printed by the printing device 10 and the cloth 7 (the cloth 7 after the pretreatment) to which the dyeing aid is applied by the pretreatment device 20 are overlapped in front of the pressurizing device 30. , In a superposed state, is supplied to the pressurizing device 30.
In the pressurizing device 30, the overlapped transfer paper 2 and the cloth 7 are pressure-bonded between the pair of

pressure rollers

31 and 31, and the pattern printed on the transfer paper 2 is the cloth 7 after the pretreatment. Is transferred to (transfer process).

Then, in the steaming device 40 at the subsequent stage of the pressurizing device 30, the fabric 7 to which the pattern is transferred is steamed and heat-treated (steaming treatment) to obtain the reactive dye and the cloth 7 contained in the ink constituting the transferred pattern. To fix the design to the cloth 7 (fixing step).
The cloth 7 after the steam heat treatment is washed by the washing device 50 to remove excess substances such as dyeing aids remaining on the cloth 7 and unreacted reactive dyes (cleaning step).
The washed cloth 7 is dried in the drying device 60 (drying step) and then wound on the take-up roller 72.

In the transfer printing apparatus 1, a transfer printing method including these pretreatment steps, a printing step, a transfer step, a fixing step, a washing step, and a drying step is carried out. By this transfer printing method, the transfer of the pattern from the transfer paper 2 to the cloth 7 and the fixing of the pattern to the cloth 7 are continuously performed at different timings, and the cloth 7 to which the pattern is fixed is continuously carried out. Created.

Hereinafter, the effect of the transfer printing method according to the first embodiment will be described.
Using Chinocross (Yamatomi Shoten Co., Ltd.) as the fabric 7, the transfer printing method according to this embodiment is carried out, and the reflection density at 100% of the duty of each color of the solid printed pattern and the allowable duty that does not cry. (%) Was confirmed (see Tables 1 and 2 below).

Here, Duty 100% means a state in which the inside of the pixel is completely filled with ink droplets, and corresponds to the printing condition having the highest density. The reflection density was measured using a commercially available optical densitometer.
As an optical densitometer, a fluorescence spectrophotometer FD-7 manufactured by Konica Minolta Co., Ltd. is exemplified.
The allowable Duty (%) that does not cause color crying means the upper limit Duty (%) that does not cause "color crying", and if the allowable Duty is exceeded, "color crying" will occur in the fabric 7 after the steam heat treatment. become. For example, when the allowable duty is "50", it means that 50% of the area in the pixel is printed so as to be completely filled with ink droplets, and the larger the allowable duty (%), the higher the density.

The symbol "C" in Tables 1 and 2 means the case of printing (single color) in which only ink droplets containing a cyan (blue: Cyan) -based reactive dye are landed in a pixel. The symbol "M" means a case of printing (single color) in which only ink droplets containing a magenta (red: Magenta) -based reactive dye are landed in a pixel. The symbol "Y" means a case of printing (single color) in which only ink droplets containing a yellow (Yellow) -based reactive dye are landed in a pixel. The symbol "K" means a case of printing (single color) in which only ink droplets containing a black (black: Black) -based reactive dye are landed in a pixel.

“MY” means a case of printing (color mixing) in which ink droplets containing a magenta (red) -based reactive dye and ink droplets containing a yellow (yellow) -based reactive dye are landed in a pixel.
“CY” means a case of printing (color mixing) in which ink droplets containing a cyan (blue) -based reactive dye and ink droplets containing a yellow (yellow) -based reactive dye are landed in a pixel.
“CM” means a case of printing (color mixing) in which ink droplets containing a cyan (blue) -based reactive dye and ink droplets containing a magenta (red) -based reactive dye are landed in a pixel.
"CMY" is an ink droplet containing a cyan (blue) -based reactive dye, an ink droplet containing a magenta (red) -based reactive dye, and an ink droplet containing a yellow (yellow) -based reactive dye in a pixel. It means the case of landing printing (color mixing).
Examples of inks containing such reactive dyes include various inks manufactured by Mimaki Engineering Co., Ltd. (SPC-0357 BL-A, SPC-0357CA, SPC-0357 BY-A, SPC-0357KD). Will be done.

The conditions of the main device included in the transfer printing device 1 when the evaluations in Tables 1 and 2 are carried out are as follows.
In the pretreatment apparatus 20, the pretreatment agent (3% aqueous solution of sodium hydrogen carbonate) is sprayed on the cloth 7, and the cloth 7 whose water addition amount is adjusted to 60% owf is pressurized as the cloth 7 after the pretreatment. It is supplied to the device 30 side.

In the pressurizing device 30, a pressurizing force of 1.6 MPa is applied to the laminated pretreated cloth 7 and the transfer paper 2 on which the pattern is printed at room temperature (25 ° C.) and 100 ° C., respectively. Then, the pattern was transferred to the cloth 7 for 2 seconds.
As a comparative example, crimping was also carried out at 150 ° C. for 60 seconds without steaming heat treatment.

In the steaming apparatus 40, steaming heat treatment was carried out for 15 minutes at a vapor pressure of 8 psi and a steaming temperature of 100 ° C. The steaming temperature of 100 ° C. corresponds to an intermediate temperature in the above-mentioned preferable steaming temperature range of 90 ° C. to 110 ° C. The steaming time of 15 minutes corresponds to an intermediate time between the preferred steaming times of 10 to 20 minutes described above.

The following points were confirmed from Tables 1 and 2.
(A) The presence or absence of steam heat treatment affects the color development density. When steam heat treatment is performed (method: crimping + steaming), the reflection density at 100% Duty is higher than when steam heat treatment is not performed (method: crimping only). That is, the color of the transferred pattern is better when the steam heat treatment is performed (see Table 1).
(B) Under the same steaming conditions (100 ° C., 15 min), the higher the temperature at the time of crimping (crimping), the higher the reflection density at 100% Duty than when the temperature is low. That is, the higher the temperature at the time of crimping, the better the color development of the transferred pattern (see Table 1).

(C) The presence or absence of steaming heat treatment does not significantly affect the allowable Duty (%) that does not cause color crying (see Table 2).
(D) Under the same steaming conditions (100 ° C., 15 min), the lower the temperature at the time of crimping (crimping), the better the allowable duty (%) that does not cause color crying (see Table 2).
For example, in the case of inks containing magenta (red) -based reactive dyes, the permissible duty (%) of non-crying increased from 50 to 70.
In the case of a mixture of an ink containing a cyan (blue) -based reactive dye and an ink containing a yellow (yellow) -based reactive dye, the allowable duty (%) for not crying increased from 30 to 50.

The numerical value of the allowable duty (%) that does not cause color crying in the case of color mixing means the allowable duty (%) that does not cause color crying of each color.
Therefore, for example, when the allowable duty (%) of color mixing (CM) that does not cry is "50", the ratio of cyan (blue) ink droplets to the common pixels and magenta (red) ink droplets. Means that the ratio of each is 50%.
That is, even in the case of mixed colors, an allowable duty (%) that does not cry, which is comparable to that of a single color, is realized.

From the above, it is possible to improve the color development of the transferred pattern by performing the steam heat treatment (wet heat treatment), and it is possible to suppress "color crying" by performing the transfer fixation of the pattern separately instead of at the same time.
When the transfer and fixation of the design are performed separately rather than at the same time, the allowable duty (%) that does not cause color crying can be increased by performing the pressure bonding at a temperature equal to or lower than the steam heat treatment temperature, preferably close to room temperature.
As a result, the density of the pattern can be increased while suppressing color crying, so that the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be appropriately performed while improving the accuracy of the pattern transferred to the cloth 7. It can be carried out.

As described above, the fabric transfer printing method according to the present embodiment has the following configurations.
(1) This is a transfer printing method including a transfer step of transferring a pattern printed on the transfer paper 2 to the cloth 7 by pressure bonding between the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7.
The transfer printing method further includes a fixing step of fixing the transferred pattern to the cloth 7 by heat treatment of the cloth 7 to which the pattern is transferred after the transfer step.

The inventor of the present invention simultaneously transfers the design to the cloth 7 by crimping the transfer paper 2 and the cloth 7, and fixes the design to the cloth 7 by steam heat treatment, so that the accuracy of the design transferred to the cloth 7 is improved. We diligently examined the cause of the decrease.
resulting in,
(A) Moisture contained in the cloth 7 is vaporized by the high temperature of the steam heat treatment for fixing the reactive dye to the cloth 7, and the reactive dye is incorporated into the vaporized water.
(B) It was found that a phenomenon called "color crying" occurs when a part of the reactive dye moves along the texture of the cloth 7 together with the vaporized water, and the accuracy of the pattern is lowered.
Therefore, in order to suppress the vaporization of water during transfer, the "color crying" was improved by transferring and fixing the pattern separately instead of at the same time.
Thereby, the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be performed more appropriately.

The fabric transfer printing method according to the embodiment has the following configurations.
(2) The heat treatment is a steam heat treatment (wet heat treatment) in which the fabric 7 to which the pattern is transferred is steam-heated.
In the transfer step, the design is transferred to the cloth 7 by crimping the transfer paper 2 and the cloth 7 at a temperature equal to or lower than the heating temperature in the steam heat treatment (wet heat treatment).

When the crimping and the steam heat treatment are performed separately, the time for crimping the transfer paper 2 and the cloth 7 can be shortened as compared with the case where the crimping and the steam heat treatment are performed at the same time, so that the vaporization of the moisture contained in the cloth 7 can be suppressed.
Further, by shortening the crimping time, the distance that the vaporized water moves along the texture of the cloth 7 can be shortened, so that "color crying" can be suppressed.
That is, by separating the transfer step and the fixing step, it is possible to suppress a defect (color crying) when the two steps are carried out together.

Further, by performing the steam heat treatment, the transferred pattern can be colored while being fixed to the cloth 7. Thereby, the transfer printing from the transfer paper 2 to the cloth 7 can be performed more appropriately.

The fabric transfer printing method according to the embodiment has the following configurations.
(3) In the steam heat treatment (wet heat treatment), the fabric 7 to which the pattern is transferred is steam-heated with the printing aid interposed therebetween.

While ensuring the accuracy of the pattern transferred to the cloth 7, the transferred pattern can be appropriately colored.

The fabric transfer printing method according to the embodiment has the following configurations.
(4) A coating step of applying an aqueous solution of a printing aid by spraying is provided at a stage prior to the fixing step.

The printing aid may be applied to either the cloth 7 or the transfer paper 2, but the printing aid can be easily applied by applying the printing aid by spraying.
Then, since the printing aid can be easily applied, the printing aid can be applied immediately before the transfer step. If the printing aid is applied to the cloth 7 or the transfer paper 2 in advance, there is a concern about the influence of changes in the printing aid over time, but the transfer printing can be performed without causing such a concern.

The fabric transfer printing method according to the embodiment has the following configurations.
(5) The coating step is carried out before the transfer step.

If the printing aid is applied to the fabric 7 in advance, the color of the fabric 7 may change over time, which may affect the quality of the fabric 7 after transfer printing. By applying the printing aid immediately before the fixing step, the occurrence of such a situation can be suitably prevented.

The fabric transfer printing method according to the embodiment has the following configurations.
(6) In the transfer step, the design is transferred to the cloth 7 by crimping the transfer paper 2 and the cloth 7 at a temperature of 100 ° C. or lower and room temperature (25 ° C.) or higher.

"Color crying" occurs when the steam generated during transfer takes in the reactive dye and flows between the fibers. Here, although the generation of steam can be suppressed by lowering the temperature, the transfer of the pattern (transfer of the dye) to the cloth 7 becomes less likely to occur when the temperature is lowered.
There is a trade-off between "color crying" and dye transferability. In addition, "color crying" and dye transferability are related to the crimping force in the transfer process, the amount of water at that time, the heating temperature, the weaving method (weaving density) of the fabric, etc. No.
Since there is a trade-off relationship between "color crying" and dye transferability, excellent dye transferability can be exhibited by transferring at the maximum temperature at which "color crying" can be suppressed.
Therefore, as described above, color crying can be suppressed by lowering the heating temperature of the transfer step to 100 ° C. or lower, which is a temperature at which transfer is possible but moisture does not evaporate and steam is not generated.

The fabric transfer printing method according to the embodiment has the following configurations.
(7) In the transfer step, the pattern is transferred to the cloth 7 by crimping the transfer paper 2 and the cloth 7 with water interposed therebetween.

The presence of water is required for the transfer of the pattern printed with the ink containing the reactive dye to the fabric 7. With the above configuration, the water content can be adjusted to the optimum water content for the transfer of the pattern.

The fabric transfer printing method according to the embodiment has the following configurations.
(8) Moisture is applied to the cloth 7 side.

Moisture may be applied to the transfer paper 2 side, but if water is applied to the transfer paper 2 side, the ink may bleed. Therefore, by applying water to the fabric 7 side on which the pattern is transferred, ink bleeding can be suppressed and transfer printing can be performed more appropriately.

Further, when a printing aid is applied to the cloth 7 immediately before being overlapped with the transfer paper 2, the amount of water contained in the cloth 7 is adjusted to the optimum amount of water for transferring the pattern, and then the transfer paper 2 and the cloth 7 are combined. Can be crimped.
Since the design can be transferred to the cloth 7 under the optimum conditions, the accuracy of the design transferred to the cloth 7 can be ensured.

The fabric transfer printing method according to the embodiment has the following configurations.
(9) Transfer printing having a transfer step of transferring the pattern printed on the transfer paper 2 to the cloth 7 by crimping the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7 to which moisture is applied. The method.
The transfer printing method further includes a fixing step of carrying out a wet heat treatment in which the fabric 7 on which the pattern is transferred is steam-heated to fix the pattern transferred to the fabric 7.
In the transfer step, the pattern is transferred to the cloth 7 by crimping the transfer paper 2 and the cloth 7 under the transfer conditions in which the pattern can be transferred to the cloth 7 and steam does not act on the cloth 7.

By separating the transfer process and the fixing process, it is possible to suppress a defect (color crying) when the two processes are performed together.
Further, by lowering the heating temperature in the transfer step to a condition where transfer is possible and steam does not act, "color crying" can be suppressed.
Here, "steam does not act" means a condition in which the moisture applied to the cloth 7 is hard to vaporize due to the pressure-bonding force acting on the cloth 7 in the transfer step.

The fabric transfer printing method according to the embodiment has the following configurations.
(10) The transfer of the pattern by crimping is carried out at a temperature equal to or lower than the processing temperature of the steaming heat treatment and shorter than the steaming heat treatment time.

When the crimping and the steaming heat treatment are performed separately, the time for crimping the transfer paper 2 and the fabric 7 is only the time required for the transfer, which is shorter than the time when the crimping and the steaming heat treatment are performed at the same time.
Then, the vaporization of the water contained in the cloth 7 can be suppressed. Further, by shortening the crimping time, the distance that the vaporized water moves along the texture of the cloth 7 can be shortened, so that "color crying" can be suppressed. Thereby, the transfer printing from the transfer paper 2 to the cloth 7 can be performed more appropriately.

The fabric transfer printing method according to the embodiment has the following configurations.
(11) The transfer of the pattern by crimping is carried out at room temperature.

The pattern can be transferred even at room temperature. When the pattern is transferred by crimping at room temperature, the vaporization of the water contained in the cloth 7 can be suppressed, so that the occurrence of "color crying" can be sufficiently suppressed. Thereby, the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be performed more appropriately.

The fabric transfer printing method according to the embodiment has the following configurations.
(12) The water content of the cloth 7 to which the dyeing aid is applied is preferably 55 to 65 owf, more preferably 55 to 60 owf.
“Ouf” is a weight portion of moisture with respect to 100 parts by weight of the fabric. 60owf means 60 parts by weight of water content with respect to 100 parts by weight of fabric.
The printing aid is applied to the fabric 7 before being superposed on the transfer paper 2.

When the printing aid is applied to the cloth 7 immediately before being superimposed on the transfer paper 2 using an aqueous solution of the printing aid, the amount of water contained in the cloth 7 is adjusted to the optimum amount for transferring the pattern, and then the amount of water is adjusted to the optimum amount. The cloth 7 can be crimped to the transfer paper 2.
As a result, the design can be transferred to the cloth 7 under the optimum conditions, so that the accuracy of the design transferred to the cloth 7 can be ensured.

The fabric transfer printing method according to the embodiment has the following configurations.
(13) The upper limit of the steaming temperature in the steaming heat treatment is 110 ° C., more preferably 104 ° C., and the upper limit of the steaming time is 20 min, more preferably 15 min.

The conditions of the steaming heat treatment need to be adjusted according to the difference in the body of the steaming apparatus 40 to be used, but the above-mentioned processing conditions are highly versatile conditions.
When the steam heat treatment is carried out under such conditions, the transferred pattern can be appropriately fixed to the cloth 7 and the transferred pattern can be satisfactorily developed in color.

The fabric transfer printing method according to the embodiment has the following configurations.
(14) The printing aid is at least one selected from the following.
Sodium hydroxide, ammonium hydroxide, sodium carbonate, sodium hydrogen carbonate, trisodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium tetraborate, trimethylamine, triethanolamine, methylamine and dimethylamine.
The amount of the dyeing aid applied to the cloth 7 is preferably 1 to 6 parts by weight, more preferably 2 to 4 parts by weight, based on 100 parts by weight of the cloth 7.

With this configuration, the pattern transferred to the cloth 7 can be appropriately colored.

The present invention can also be specified as a transfer printing device for fabrics.
(15) The transfer printing apparatus 1 is
Pressurizing device 30 (transfer device) that transfers the pattern printed on the transfer paper 2 to the cloth 7 by crimping the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7 after the pretreatment. When,
It has a steaming device 40 (fixing device) for fixing the pattern transferred to the cloth 7 by performing a heat treatment (steaming heat treatment) for steam-heating the cloth 7 on which the pattern is transferred.

By crimping the transfer paper 2 and the cloth 7 to transfer the pattern to the cloth 7 and fixing the pattern to the cloth 7 by heat treatment (steaming heat treatment) separately, not at the same time, "color crying" can be achieved. Can be improved.

In addition, "color crying" occurs when steam generated during transfer takes in the reactive dye and flows between the fibers. Here, although the generation of steam can be suppressed by lowering the temperature, the transfer of the pattern (transfer of the dye) to the cloth 7 becomes less likely to occur when the temperature is lowered.
There is a trade-off between "color crying" and dye transferability. Therefore, the processing temperature in the pressurizing device 30 is set to the maximum temperature at which "color crying" does not occur, that is, a temperature at which transfer is possible but moisture is vaporized and steam is not generated (a temperature equal to or lower than the heating temperature in the steaming device 40). ). As a result, excellent dye transferability can be exhibited while suppressing "color crying".

The fabric transfer printing apparatus according to the embodiment has the following configuration.
(16) In the steaming device 40 (fixing device, wet heat treatment device), a wet heat treatment is performed in which the fabric 7 to which the pattern is transferred is steam-heated.
In the pressurizing device 30, the pattern is transferred to the cloth 7 by crimping the transfer paper 2 and the cloth 7 at a temperature equal to or lower than the heating temperature in the steaming device 40.

By separately transferring the pattern to the cloth 7 and fixing the transferred pattern to the cloth 7, there is a problem (color crying) as compared with the case where the pattern is transferred and fixed to the cloth 7 at the same time. ) Can be suppressed.
Further, by performing the steam heat treatment, the transferred pattern can be colored while being fixed to the cloth 7. Thereby, the transfer printing from the transfer paper 2 to the cloth 7 can be performed more appropriately.

Further, the fabric transfer printing apparatus according to the present embodiment has the following configuration.
(17) The cloth 7 has a strip shape and is continuously fed from the feeding roller 71, and the pretreatment device 20, the pressurizing device 30 (transfer device), and the steaming device 40 (fixing device) are sequentially fed. After passing through, it is configured to be wound up in contact with the winding roller 72.
The transfer paper 2 has a strip shape, is continuously fed from the feeding roller 21, is superposed on the pretreated cloth 7 in front of the pressurizing device 30 (transfer device), and then is superposed on the cloth 7. After passing through the pressurizing device 30 (transfer device) in this state, it is configured to be wound in contact with the winding roller 22.
The transfer paper 2 is superposed on the cloth 7 in a direction in which the surface on which the pattern is printed is brought into contact with the cloth 7 after the pretreatment.

With this configuration, the pattern can be continuously transferred from the strip-shaped transfer paper 2 to the strip-shaped cloth 7 while suppressing "color crying".
It is possible to improve the production efficiency of the cloth 7 to which the pattern is transferred while ensuring the accuracy of the pattern transferred to the cloth 7.

Further, the fabric transfer printing apparatus according to the present embodiment has the following configuration.
(18) The pressurizing device 30 (transfer device) has a pair of pressurizing

rollers

31, 31.
The pattern printed on the transfer paper 2 is transferred to the cloth 7 when it passes between the pair of

pressure rollers

31 and 31 in a state of being overlapped with the cloth 7 after the pretreatment.

With this configuration, the pattern can be continuously transferred from the strip-shaped transfer paper 2 to the strip-shaped cloth 7 while suppressing "color crying".

Further, the fabric transfer printing apparatus according to the present embodiment has the following configuration.
(19) The transfer printing apparatus 1 has a pretreatment apparatus 20 for pretreating the fabric 7.
The pretreatment device 20 sprays an aqueous solution of the printing aid on the cloth 7 before being superposed on the transfer paper 2, or immerses the cloth 7 before being superposed on the transfer paper 2 in the aqueous solution of the printing aid. As a result, a printing aid is applied to the fabric 7.

The presence of moisture is required for the transfer of the pattern printed with the ink containing the reactive dye to the fabric 7.
When the printing aid is applied to the fabric 7 immediately before being overlapped with the transfer paper 2 using an aqueous solution of the printing aid, the amount of water contained in the fabric 7 is adjusted to the optimum amount for transferring the pattern, and then the amount of water is adjusted to the optimum amount. Can be crimped to transfer paper 2.
As a result, the design can be transferred to the cloth 7 under the optimum conditions, so that the accuracy of the design transferred to the cloth 7 can be ensured.
Here, the water content of the fabric 7 to which the dyeing aid is applied is preferably 55 to 65 owf, more preferably 55 to 60 owf.

Further, the fabric transfer printing apparatus according to the present embodiment has the following configuration.
(20) The transfer of the symbol by crimping is carried out at a temperature equal to or lower than the processing temperature of the steaming heat treatment and shorter than the steaming heat treatment time.

When the crimping and the steaming heat treatment are performed separately, the time for crimping the transfer paper 2 and the cloth 7 in order to transfer the pattern is shorter than when the crimping and the steaming heat treatment are performed at the same time.
Then, the vaporization of the water contained in the cloth 7 can be suppressed.
Further, by shortening the crimping time, the distance that the vaporized water moves along the texture of the cloth 7 can be shortened. Therefore, even if the water contained in the cloth 7 is vaporized at the time of crimping, the moving range of the vaporized water is widened. Limited to a narrow range.
As a result, the occurrence of "color crying" can be suppressed, so that the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be performed more appropriately.

The fabric transfer printing apparatus according to the embodiment has the following configuration.
(21) The upper limit of the steaming temperature in the steaming heat treatment is 110 ° C., more preferably 104 ° C., and the upper limit of the steaming time is 20 min, more preferably 15 min.

When crimping and steaming heat treatment are performed at the same time, the transfer paper 2 and the fabric 7 are exposed to a steaming environment at 150 ° C. for 60 seconds in a state of being in close contact with each other at a pressure of 1.6 MPa, for example.
When crimping and steaming heat treatment are performed separately under the same pressure conditions, the pressurization time required for transferring the pattern by crimping is 2 seconds, which is sufficiently shorter than when crimping and steaming heat treatment are performed at the same time.

Therefore, by performing the crimping and the steaming heat treatment separately, the pattern can be transferred in a shorter time. When the pattern is transferred, the vaporization of the water contained in the cloth 7 can be suppressed, so that a part of the reactive dye is dissolved in the vaporized water and the reactive dye moves along with the vaporized water along the texture. It can be preferably prevented. This makes it possible to preferably prevent color crying from occurring on the fabric 7 after transfer printing.
Further, the transferred pattern can be appropriately fixed to the cloth 7, and the transferred pattern can be satisfactorily developed in color.

[Modification 1]
FIG. 2 is a schematic view of the transfer printing apparatus 1A according to the first modification.
The transfer printing device 1A is a device for transferring and printing a pattern printed on the transfer paper 2 onto the cloth 7 in the same manner as the transfer printing device 1 described above.

As shown in FIG. 2, the transfer printing apparatus 1A includes a printing apparatus 10, a pretreatment apparatus 20, a pressurizing apparatus 30 (transfer apparatus), a sublimation transfer press 45 (fixing apparatus), a cleaning apparatus 50, and the like. It has a drying device 60 and.
The transfer printing device 1A is different from the transfer printing device 1 in that it includes a sublimation transfer press 45 instead of the steaming device 40 described above.
The sublimation transfer press 45 is provided between the pressurizing device 30 and the cleaning device 50.

In the transfer printing apparatus 1A, the sublimation transfer press 45 in the subsequent stage of the pressurizing apparatus 30 carries out a dry heat treatment of the fabric 7 on which the pattern is transferred. The sublimation transfer press 45 reacts the reactive dye contained in the ink constituting the transferred pattern with the cloth 7 to fix the pattern to the cloth 7.
Here, the dry heat treatment means heating in an environment where there is no moisture or steam other than the moisture imparted to the fabric 7 before the heat treatment without externally imparting moisture to the fabric 7 to which the pattern is transferred. It is a process. In the steaming heat treatment described above, the fabric 7 to which the pattern was transferred was heated while externally applying water vapor.

The sublimation transfer press 45 is a press that applies high temperature and high pressure to the fabric 7 on which the pattern is transferred.
By the action of high temperature and high pressure on the cloth 7, the reactive dye contained in the ink constituting the pattern reacts with the cloth 7, the pattern is permeated into the cloth 7 and fixed, and the dye is developed.

The conditions for the dry heat treatment in the sublimation transfer press 45 are as follows.
The heating temperature is preferably 100 ° C. to 150 ° C., more preferably 115 ° C. to 125 ° C.
The press pressure is 0.1 MPa to 0.5 MPa, more preferably 0.2 MPa.
The treatment time is preferably 1 minute to 10 minutes, more preferably 3 minutes to 5 minutes.
As the sublimation transfer press machine 45, a sublimation transfer press machine MP-1000 manufactured by Asahi Textile Machinery Co., Ltd. is exemplified.

Hereinafter, the effect of the transfer printing method according to the first modification will be described.
Using cotton broadcloth (Yamatomi Shoten Co., Ltd.) as the cloth 7, the transfer printing method according to the first modification was carried out, and the reflection density of each color of the solid printed pattern at 100% Duty was confirmed (the following). See Tables 3 and 4).

As the printing apparatus 10, JV-33-160 manufactured by Mimaki Engineering Co., Ltd. was used.
Rc400 manufactured by Mimaki Engineering Co., Ltd. was used as the reactive dye (reactive dye ink).

The symbol "C" in Table 3 means the case of printing (single color) in which only ink droplets containing a cyan (blue: Cyan) -based reactive dye are landed in a pixel. The symbol "M" means a case of printing (single color) in which only ink droplets containing a magenta (red: Magenta) -based reactive dye are landed in a pixel. The symbol "Y" means a case of printing (single color) in which only ink droplets containing a yellow (Yellow) -based reactive dye are landed in a pixel. The symbol "K" means a case of printing (single color) in which only ink droplets containing a black (black: Black) -based reactive dye are landed in a pixel.

The conditions of the main device included in the transfer printing device 1 when the evaluations in Tables 3 and 4 are carried out are as follows.
In the pretreatment apparatus 20, the pretreatment agent (3% aqueous solution of sodium hydrogen carbonate) is sprayed on the cloth 7, and the cloth 7 whose water addition amount is adjusted to 60% owf is pressurized as the cloth 7 after the pretreatment. It is supplied to the device 30 side.
As the pressurizing device 30, a small heat press machine HC300-05 manufactured by AS ONE Corporation was used.
In the pressurizing device 30, crimping of the overlapped pretreated cloth 7 and the transfer paper 2 on which the pattern is printed is performed at 100 ° C. and 1.6 MPa for 2 seconds to the cloth 7. The design was transferred.

In the sublimation transfer press machine 45, the sublimation transfer press machine MP-1000 manufactured by Asahi Textile Machinery Co., Ltd. was used to perform a dry heat treatment of the fabric 7 on which the pattern was transferred.
Since the dry heat treatment depends on two parameters of temperature and time, the optimum treatment conditions were obtained by experiments for both values.
Specifically, the deliverables obtained when the heating time was fixed at 5 minutes and the heating temperature was shaken (Table 3) and when both the heating time and the heating temperature were shaken (Table 4). evaluated. In both Tables 3 and 4, the press pressure was fixed at 0.2 MPa.
The evaluation of the deliverables was carried out based on the numerical values obtained by measuring the solid 100% reflection density of each color CMYK using a fluorescence spectrophotometer FD-7 manufactured by Konica Minolta Co., Ltd.

From Table 3, the following points were confirmed.
(A) When the heating time is fixed at 5 minutes, the heating temperature is good in the range of 100 ° C. to 175 ° C. in any of yellow (Y), magenta (M), cyan (C), and black (K). The reflection density was high (Table 3).
(B) Based on the results of yellow (Y) and black (K), the heating temperature is more preferably in the range of 120 ° C. to 150 ° C. (Table 3).

Here, when the treatment temperature of the dry heat treatment becomes high, alkali burning occurs in which the fabric 7 is yellowed by the alkali (printing aid) and heat. In the case of Table 3, the phenomenon of alkaline burning was observed when the treatment temperature of the dry heat treatment was 125 ° C. or higher.
In addition, the processing temperature of the dry heat treatment changed sharply at the boundary between 75 ° C. and 100 ° C., and the color development was better on the 100 ° C. side than on the 75 ° C. side (reflection concentration value). Has become higher).
Therefore, in Table 4, the treatment temperature of the dry heat treatment was narrowed down to the range (temperature range) of 100 ° C. to 125 ° C., and the relationship between the treatment temperature of the dry heat treatment and the treatment time of the dry heat treatment was examined in detail.

As a result, the following points were confirmed from Table 4.
(C) When the heating temperature was in the range of 100 ° C. to 125 ° C., good reflection concentration was obtained by heating for at least 5 minutes except for cyanide (C) (Table 4).
(D) When the heating temperature was in the range of 115 ° C. to 125 ° C., heating for at least 1 minute resulted in almost good reflection concentration (Table 4).

Even if the dry heat treatment treatment time is long, alkaline burning occurs.
Therefore, when the heating temperature is in the range of 115 ° C. to 125 ° C., the heating time is preferably between 3 minutes and 5 minutes (Table 4).

As described above, even when the dry heat treatment is performed instead of the steam heat treatment, the color development of the transferred pattern can be improved. Then, by performing the transfer of the symbol and the fixation of the transferred symbol separately instead of at the same time, "color crying" can be suppressed.
As a result, it is possible to improve the color development of the pattern while suppressing color crying, so that the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be appropriately performed while improving the accuracy of the pattern transferred to the cloth 7. It can be carried out.

From the above, the treatment temperature of the dry heat treatment according to the modified example 1 is preferably 100 ° C. to 150 ° C., more preferably 115 ° C. to 125 ° C.
The treatment time of the dry heat treatment is preferably 1 minute to 10 minutes, more preferably 3 minutes to 5 minutes.
It should be noted that these temperature ranges and processing times are examples of the case of the transfer printing apparatus 1A according to the modified example, and are appropriately changed depending on the configuration of the transfer printing apparatus.
The treatment temperature of the dry heat treatment and the treatment time of the dry heat treatment are set to a low temperature at which color can be developed (satisfying the threshold value for adjusting the reflection density) and a short time through experiments and the like.

The transfer printing method of the fabric according to the modified example has the following constitution.
(22) This is a transfer printing method including a transfer step of transferring a pattern printed on the transfer paper 2 to the cloth 7 by pressure bonding between the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7.
The transfer printing method further includes a fixing step of fixing the transferred pattern to the cloth 7 by a dry heat treatment (heat treatment) of the cloth 7 to which the pattern is transferred after the transfer step.

By transferring and fixing the pattern to the cloth 7 at different timings rather than at the same time, it is possible to suppress color crying as compared with the case where the patterns are transferred and fixed at the same time.
Further, by performing a dry heat treatment instead of the steam heat treatment, the transferred pattern can be colored while being fixed to the cloth 7. Thereby, the transfer printing from the transfer paper 2 to the cloth 7 can be performed more appropriately.

Further, since the time required for the transferred pattern to adhere to the cloth 7 and the color to be developed is shorter in the dry heat treatment than in the steam heat treatment, the time required for the production of the cloth 7 to which the pattern is transferred can be shortened. Become.

The transfer printing method of the fabric according to the modified example has the following constitution.
(23) In the dry heat treatment, the fabric 7 to which the pattern is transferred is heated with the printing aid interposed therebetween.

While ensuring the accuracy of the pattern transferred to the cloth 7, the pattern transferred to the cloth 7 can be appropriately colored.

The fabric transfer printing apparatus 1A according to the modified example has the following configuration.
(24) A pressurizing device 30 (transfer device) for transferring the pattern printed on the transfer paper 2 to the cloth 7 by pressure bonding between the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7.
It has a sublimation transfer press 45 (fixing device) for fixing the transferred pattern to the cloth 7 by performing a dry heat treatment (heat treatment) of the cloth 7 on which the pattern is transferred.

When the design is fixed by steam heat treatment, equipment for supplying steam such as boilers and pipes, fuel for operating the boiler, tanks for storing fuel, etc. are required. Will become large.
Since the sublimation transfer press machine 45 that performs the dry heat treatment does not require a boiler or piping, the equipment can be downsized as compared with the case where the steam heat treatment is performed. Further, since a power source may be provided for driving the sublimation transfer press 45, the scale of the equipment can be reduced as compared with the case of performing steam heat treatment.
As a result, the installation cost and operation cost of the equipment can be suppressed as compared with the case of performing the steam heat treatment.

[Modification 2]
FIG. 3 is a schematic view of the transfer printing apparatus 1B according to the second modification.
The transfer printing device 1B is a device for transferring and printing a pattern printed on the transfer paper 2 onto the cloth 7 in the same manner as the transfer printing devices 1 and 1A described above.

As shown in FIG. 3, the transfer printing apparatus 1B includes a printing apparatus 10, a pretreatment apparatus 20, a pressurizing apparatus 30 (transfer apparatus), an oven 46 (fixing apparatus), a cleaning apparatus 50, and a drying apparatus 60. And have.
The transfer printing device 1B is different from the transfer printing devices 1 and 1A in that it includes an oven 46 in place of the steaming device 40 and the sublimation transfer press machine 45 described above.
The oven 46 is provided between the pressurizing device 30 and the cleaning device 50.

In the transfer printing apparatus 1B, in the oven 46 at the subsequent stage of the pressurizing apparatus 30, the fabric 7 to which the pattern is transferred is subjected to a dry heat treatment to remove the reactive dye and the fabric 7 contained in the ink constituting the transferred pattern. By reacting, the design is fixed to the cloth 7.

The conditions of the dry heat treatment in the oven 46 are as follows.
The heating temperature is preferably 100 ° C. to 150 ° C., more preferably 115 ° C. to 125 ° C., as in the case of the first modification.
The treatment time is also preferably 1 minute to 10 minutes, more preferably 3 minutes to 5 minutes, as in the case of the first modification.
As the oven 46, the thermo-coloring machine FHS-1900BX for an inkjet printer manufactured by Uenoyama Kikai Kogyo Co., Ltd. is exemplified.

Hereinafter, the effect of the transfer printing method according to the second modification will be described.
Using cotton broadcloth (Yamatomi Shoten Co., Ltd.) as the cloth 7, the transfer printing method according to the second modification was carried out, and the reflection density of each color of the solid printed pattern at 100% Duty was confirmed (the following). (See Table 5).

The printing apparatus 10 used was JV-33-160 manufactured by Mimaki Engineering Co., Ltd. Rc400 manufactured by Mimaki Engineering Co., Ltd. was used as the reactive dye (reactive dye ink).

The conditions of the main device included in the transfer printing device 1B when the evaluation in Table 5 was carried out are as follows.
In the pretreatment apparatus 20, the pretreatment agent (3% aqueous solution of sodium hydrogen carbonate) is sprayed on the cloth 7, and the cloth 7 whose water addition amount is adjusted to 60% owf is pressurized as the cloth 7 after the pretreatment. It is supplied to the device 30 side.
As the pressurizing device 30, a small heat press machine HC300-05 manufactured by AS ONE Corporation was used.
In the pressurizing device 30, crimping of the overlapped pretreated cloth 7 and the transfer paper 2 on which the pattern is printed is performed at 100 ° C. and 1.6 MPa for 2 seconds to the cloth 7. The design was transferred.

In the oven 46, a thermo-coloring machine FHS-1900BX for an inkjet printer manufactured by Uenoyama Kikai Kogyo Co., Ltd. was used to dry-heat-treat the cloth 7 to which the pattern was transferred.
In the dry heat treatment, the products obtained when the heating time was fixed at 5 minutes and the heating temperatures were changed to 115 ° C. and 150 ° C. (Table 5) were evaluated.
The evaluation of the deliverables was carried out based on the numerical values obtained by measuring the reflection density of 100% solid CMYK for each color using a fluorescence spectrophotometer FD-7 manufactured by Konica Minolta Co., Ltd.

From Table 5, the following points were confirmed.
(A) When the heating time is fixed at 5 minutes, good reflection is achieved in yellow (Y), magenta (M), cyan (C), and black (K) at any of the heating temperatures of 115 ° C. and 150 ° C. It became the concentration (Table 5).

As described above, even when the dry heat treatment is performed using the oven 46, the color development of the transferred pattern can be improved. Then, by performing the transfer of the symbol and the fixation of the transferred symbol separately instead of at the same time, "color crying" can be suppressed.
As a result, the density of the pattern can be increased while suppressing color crying, so that the transfer printing of the pattern from the transfer paper 2 to the cloth 7 can be appropriately performed while improving the accuracy of the pattern transferred to the cloth 7. It can be carried out.

From the above, the treatment temperature of the dry heat treatment according to the modified example 2 is preferably 115 ° C. to 150 ° C., more preferably 150 ° C.

The fabric transfer printing method according to the second modification has the following configuration.
(25) This is a transfer printing method including a transfer step of transferring a pattern printed on the transfer paper 2 to the cloth 7 by pressure bonding between the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7.
The transfer printing method further includes a fixing step of fixing the transferred pattern to the cloth 7 by a dry heat treatment (heat treatment) of the cloth 7 to which the pattern is transferred after the transfer step.

Further, since the time required for the transferred pattern to be fixed to the cloth 7 is shorter in the dry heat treatment than in the steam heat treatment, the time required for the production of the cloth 7 to which the pattern is transferred can be shortened.

The fabric transfer printing apparatus 1B according to the second modification has the following configuration.
(26) A pressurizing device 30 (transfer device) for transferring the pattern printed on the transfer paper 2 to the cloth 7 by pressure bonding between the transfer paper 2 on which the pattern is printed with ink containing a reactive dye and the cloth 7.
It has an oven 46 (fixing device) for fixing the transferred pattern to the cloth 7 by performing a dry heat treatment (heat treatment) of the cloth 7 on which the pattern is transferred.

With such a configuration, the scale of the equipment can be suppressed as compared with the case of performing the steam heat treatment.
Further, the installation cost and the operation cost of the equipment can be suppressed as compared with the case of performing the steam heat treatment.

In the above-described embodiments and modifications 1 and 2, each step in the transfer printing apparatus (printing of the pattern on the transfer paper 2, transfer of the pattern to the cloth 7, and fixing of the transferred pattern to the cloth 7) is performed in-line. An example is shown in which the processing is continuously performed. Each step in the transfer printing apparatus may be carried out by a batch process which is carried out individually.

In the above-described embodiments and modifications 1 and 2, temperature, pressure, time and the like are exemplified as processing conditions in the pressurizing device 30 (transfer device) for transferring the pattern from the transfer paper 2 to the fabric 7.
The processing conditions are appropriately determined depending on the thickness of the cloth 7 to be printed, the type of the cloth constituting the cloth 7, the amount of water added to the cloth 7, and the like. Not limited to what is shown.
For example, it is preferable to reduce the water content of the fabric 7 as the pressure for transferring the pattern increases.

In the above-described embodiments and modifications, a 3% aqueous solution of sodium hydrogen carbonate was adopted as a pretreatment agent for imparting water to the fabric 7 from the viewpoint of the load of water treatment.
The pretreatment agent may be any agent having water retention, and for example, urea or the like can be adopted. By adding a chemical having such water retention, the color development of the transferred pattern can be enhanced.

In the above-mentioned modifications 1 and 2, the case where the sublimation transfer press 45 or the oven 46 is used as the heat source for the dry heat treatment is illustrated. As the heat source for the dry heat treatment, a furnace can be adopted as long as it can give a predetermined temperature and heat amount to the cloth 7.
When the oven 46 is used, it is not necessary to resist dye the apparatus with base paper or the like, so that the fixing process can be made into a clean environment.

As described above, in the modified examples 1 and 2, the transferred pattern is fixed to the cloth 7 by changing the process for fixing the transferred pattern to the cloth 7 from the wet heat treatment to the dry heat treatment. It can be shortened from 104 ° C. and 15 minutes in the case of steam heat treatment to 115 ° C. and 5 minutes in the case of dry heat treatment. As a result, the productivity of the fabric 7 to which the pattern is transferred is improved three times.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments shown in these embodiments. It can be changed as appropriate within the scope of the technical idea of the invention.

1, 1A, 1B Transfer printing device 2 Transfer paper 7 Cloth 10 Printing device 20 Pretreatment device 21 Feeding roller 22 Winding roller 30 Pressurizing device 31 Pressurizing roller 40 Steaming device 45 Sublimation transfer press machine 46 Oven 50 Cleaning device 60 Drying Device 71 Feeding roller 72 Winding roller X1, X2 Rotating shaft

Claims

A transfer printing method comprising a transfer step of transferring a pattern printed on the transfer paper to the cloth by pressure bonding between the transfer paper on which the pattern is printed with ink containing a reactive dye and the cloth.
Further, a method for transferring and printing a cloth, which comprises a fixing step of fixing the transferred pattern to the cloth by heat treatment of the cloth to which the pattern is transferred after the transfer step.
The heat treatment is a wet heat treatment in which the fabric on which the pattern is transferred is steam-heated.
The transfer of the cloth according to claim 1, wherein in the transfer step, the design is transferred to the cloth by crimping the transfer paper and the cloth at a temperature equal to or lower than the heating temperature in the moist heat treatment. Printing method.
The transfer printing method for a fabric according to claim 2, wherein the wet heat treatment is a steam heat treatment in which the fabric on which the pattern is transferred is steam-heated with a printing aid interposed therebetween.
The heat treatment is a dry heat treatment for heating the fabric on which the pattern is transferred.
The transfer of the fabric according to claim 1, wherein in the transfer step, the design is transferred to the fabric by crimping the transfer paper and the fabric at a temperature equal to or lower than the heating temperature in the dry heat treatment. Printing method.
The transfer printing method for a fabric according to claim 4, wherein in the dry heat treatment, the fabric on which the pattern is transferred is heated with a printing aid interposed therebetween.
The transfer printing method for a fabric according to claim 3 or 5, wherein the printing aid is applied by a spray in a step prior to the fixing step.
The method for transferring and printing a fabric according to claim 6, wherein the coating step is carried out in a step prior to the transfer step.
The transfer step according to any one of claims 1 to 7, wherein the design is transferred to the cloth by crimping the transfer paper and the cloth at a temperature of 100 ° C. or lower. The method for transferring and printing a fabric according to the description.
Any one of claims 1 to 7, wherein in the transfer step, the design is transferred to the cloth by crimping the transfer paper and the cloth in a state of interposing moisture. The method for transferring and printing a fabric according to the item.
The transfer printing method for a fabric according to claim 9, wherein the moisture is applied to the fabric side.
A transfer printing method comprising a transfer step of transferring a pattern printed on the transfer paper to the cloth by crimping a transfer paper on which the pattern is printed with an ink containing a reactive dye and a cloth to which moisture is applied.
Further, it has a fixing step of performing a wet heat treatment of steam heating on the cloth on which the pattern is transferred to fix the pattern transferred to the cloth.
In the transfer step, the design is transferred to the fabric by crimping the transfer paper and the fabric under transfer conditions in which the design can be transferred to the fabric and the steam does not act on the fabric. A method for transferring and printing a fabric, which is characterized in that.
A transfer paper on which a pattern is printed with ink containing a reactive dye, a transfer device that transfers the pattern printed on the transfer paper to the cloth by pressure bonding with the cloth, and a transfer device.
A fabric transfer printing device comprising: a fixing device for fixing the transferred pattern to the cloth by performing a heat treatment of the cloth on which the pattern is transferred.
The fixing device is a wet heat treatment device that steam-heats the fabric on which the pattern is transferred.
The cloth according to claim 12, wherein in the transfer device, the design is transferred to the cloth by crimping the transfer paper and the cloth at a temperature equal to or lower than the heating temperature in the moist heat treatment device. Transfer printing equipment.
The fixing device is a dry heat treatment device that heats a fabric on which the pattern is transferred.
The cloth according to claim 12, wherein in the transfer device, the design is transferred to the cloth by crimping the transfer paper and the cloth at a temperature equal to or lower than the heating temperature in the dry heat treatment device. Transfer printing equipment.