JPS60185886A - Printing liquid medium - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a liquid medium for textile printing, particularly a liquid medium that is compatible with an inkjet printing method.

(Prior art) (Since iC, woven fabrics and non-woven fabrics made of synthetic fibers such as polyester and acetate, or these #J! fibers and other fibers 1
For printing woven fabrics blended with fL, printing methods such as roller printing, screen printing, and transfer printing are used, and some printing methods using an inkjet method have also been proposed.

(The problem that the invention is trying to solve) However,
Conventional general textile printing methods require the creation of printing plates for printing, and these plates, such as printing plate cylinders and screen plates, are expensive, and transfer paper is also required for printing in transfer printing. Since the production of plates is expensive, it is not cost-effective unless large quantities are produced. In addition, since the fashion period for printed fabric patterns is generally short, making plates each time increases costs, and there is the serious problem of not being able to respond quickly to trends and having to keep a large amount of inventory. Ruru. In order to solve these drawbacks, inkjet printing was also proposed, but due to the structure of the equipment, it is preferable to dye the dye continuously after printing, but continuous printing is not possible. Since the mainstream dyeing method is high-temperature dyeing, typified by the thermosol method and high-temperature steaming method, there are significant restrictions on the selection of dyes.

Therefore, an object of the present invention is to provide a liquid medium for textile printing that can simultaneously solve the economical problems of the conventional general textile printing method as described above and the various problems related to dyeing in the inkjet printing method. Kotoderuru.

These objects and other objects of the present invention are achieved by the present invention as described below.

(Disclosure of the Invention) That is, the present invention is a printing liquid medium that contains a dye and is coated with PA so that the viscosity at 20t' is less than s o cps.

As described above, the first feature that characterizes the present invention is that a dye is used as a coloring component, and the second feature is that the viscosity of the resulting liquid medium is 20 s o cps or less. The point is to prepare.

The dye used in the present invention is appropriately selected depending on the fabric to be printed so as to suit the printing conditions thereof, and many conventionally known dyes are effective.

The dyes that can be effectively used in the present invention are dyes that can be dyed onto fabrics by heating, and the most suitable among these are dyes or reactive dyes.

The above-mentioned dyes suitably used in the present invention include, for example, Resolino(), Sumiriro/
(manufactured by Sumitomo Chemical), Dianisox (manufactured by Mitsubishi Kasei), Kayalon (manufactured by Nippon Kayaku), etc. Product names of fractional dyes and prodione ((Ko Q I 42114)), Revafix (manufactured by Bayer), Sumifix (Sumitomo Chemical) Examples include reactive dyes having trade names such as Diamirror (manufactured by Mitsubishi Kasei), Remazol (manufactured by Hoechst), and Cibacron (manufactured by Ciba Kaigy).

Are these dyes contained in a liquid medium that is appropriately selected and composed as desired? 8 solutions or a dispersed state.

To compose the liquid medium, e.g. water, methanol-JV,
Lower alcohols such as engineering 9/-l, clovir alcohol,
Aliphatic polyhydric alcohols such as chrycerin and ethylene glycol, methylcarpitol, ethyl cellosolve, ethyl cellosolve, N-methyl-2-pyrrolidone, triethanolamine, and the like are preferably used.

The quantitative relationship between these liquid media and dyes is determined based on factors such as clogging of the liquid jet nozzle, drying of the liquid medium at the nozzle opening, drying speed when applied to fabric, etc. The amount of dye per 100 parts is usually 1 to 50 parts, preferably 3 to 30 parts, most preferably 5 to 10 parts. In addition, if the dye tends to bleed when applied to the fabric, an appropriate amount of viscosity modifier or surface tension modifier may be added to adjust the viscosity and surface tension of the dye-containing liquid to prevent bleeding. added.

As a method to prevent production, as mentioned above, viscosity ii'
A method of adding a +'J stabilizer or a surface tension adjuster may be mentioned, but such methods are particularly useful when the dye-containing liquid is a solution type (a system in which the dye is dissolved in a liquid medium). It is effective for

As a method for preventing bleeding, there is a method in which the dye-containing liquid is used as a dispersion system (a system in which the dye is dispersed in a liquid medium) in addition to the above ml method. Since this method has a lower rate of bleeding than the solution system, it is not necessary to place as much emphasis on adjusting the viscosity and surface tension as in the solution system, and it can be effectively applied in the present invention.

In this case, the particle size of the dispersed dye is appropriately determined depending on the type of dye, the inkjet method used, the nozzle diameter in that method, the type of fabric, the pattern, etc. If it is too large, the dye particles may settle during storage, resulting in uneven density, clogging of the nozzle, or unevenness on the printed pattern. Undesirable.

Taking this into consideration, the particle size of the dye in the dispersion system in the present invention is usually 0.05 to 50μ, preferably 0.05 to 50μ.
20μ, optimally 0. +~8μ. Furthermore, the particle size distribution of the dispersed dye should be as narrow as possible (M4), usually D±5μ, preferably FiD±1.5μ (however, D is the average particle size). ).

especially,? 1) Considering the image quality of the resulting print, the viscosity of the printing liquid medium of the present invention is usually 50 cps or less at room temperature, and preferably 500 cps or less.
P8 or lower, J Yoisoku is 20 CP8 or lower. or,
It is desirable that the surface tension is usually 30 dyn/cIrL or more, preferably 4 o dyn/crn or more.

As the adhesive agent and surface tension adjuster, all commonly known agents can be used as long as they are effective and do not adversely affect the dye used. Usable (, B.

Specifically, viscous (t4PJ'l modifiers include carboxymethyl cellulose 5in2 powder, acrylic resin, PJ'l
Many additives such as vA polyvinylpyrrolidone, gum arabic starch, and natural and synthetic resins are used. Inorganic salts such as potassium nitrite and ammonium nitrate, and some surfactants are preferably used as surface tension modifiers. .

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples and Usage Examples, and the effects of the present invention will also be illustrated.

Example 1 The above composition was stirred in a porcelain ball mill for 120 hours, and then filtered using a 500 mesh sieve, and the resulting solution was used as a printing solution. The viscosity of this printing liquid is 20
It was 300 PS.

As an example of use, the printing liquid obtained in Example 1 was placed in a printing liquid storage tank connected to a nozzle with an inner diameter of 0.2 mm, and the deflection electrode was placed 4 mm from the tip of the nozzle. Apply +5KV to pressurize the printing liquid and move it to the nozzle.
When I lent it, the pudding (M) was atomized from the tip of the nozzle, and the back side was heated to 170 m with a shihosoto grate.
When applied to a polyester cloth that is moving at a speed of 5cm/see in a direction perpendicular to the direction of nozzle movement (speed of 5cz/θec), it develops a red color in about 10 seconds, and the desired pattern is completely free from bleeding. Brightly printed.

Example 2 A printing liquid whose viscosity at 20υ was adjusted to 500 PSE was obtained in exactly the same manner as in Example 1, except that 2 parts of Na salt of carboxymethyl cellulose was further added to the composition of Example 1. Even when this printing liquid was left for one week, no precipitation of the dye was observed, and it was confirmed that the printing liquid had extremely good stability.

Example 3 A printing solution was obtained in exactly the same manner as in Example 1, except that Sumikalon Brilliant Blue 5-BL (trade name: Sumitomo Chemical Co., Ltd.! 1q) was used as the disperse dye. The viscosity of the obtained printing liquid was equivalent to that of the printing liquid of Example 1.

Example 4 The above K11 product was stirred and mixed in a ball mill manufactured by A for 120 hours, and then filtered using a +000 mesh sieve, and the obtained liquid F was used as a printing liquid.

Is the viscosity of this print liquid 20t? It was 30 cps.

Usage Example 2゜The printing liquid obtained in Example 4 was put into a printing liquid storage tank connected to a nozzle with an inner diameter of 0.2 mm, and a deflection electrode installed at a distance of 4 mm from the tip of the nozzle was supplied with -5 KV to the nozzle K + S. When K V was applied and the printing liquid was pressurized and ejected from the nozzle, the printing liquid was atomized from the tip of the nozzle, heated to 190 mm by a hot plate on the back side (j+i), and then moved in the direction of nozzle movement (5 cm/ I: speed of lec)
When applied to a polyester/cotton = 7/3 blend that is moving at a speed of 1c 5 cm / sθC in a straight direction, it develops a red color in about 60 seconds, and the desired design is bright with no bleeding at all. printed on.

Example 5 2 parts of urea The above composition was stirred and mixed in a porcelain ball mill for 50 hours, and then passed through a sieve of 40 mm.
The viscosity of the printing liquid was 20 mm + 00 PS.

Example 6 The above composition was stirred and mixed in a porcelain ball mill for 60 hours, and then passed through a 500 mesh sieve. Seven types of printing liquids were prepared by adding the liquids to the viscosity shown in Table 1.

Use Example 6 Printing was carried out in the same manner as in Use Example 1 using each of the printing liquids obtained in Example 6.

The image quality ft1i'F value of the obtained print was determined as follows:
Shown in the table.

◎: Very good, ○: Good, △: Practical Example Z The same 4iA printing liquid as in Example 6 was obtained by replacing the viscosity modifier used in Example 6 with carboxymethyl cellulose.

Example 8゜The dye used in Example 6 was mixed with 2 parts of Sumiyuki Rorthod E-FBL (disperse dye trade name, manufactured by Sumitomo Chemical Co., Ltd.) and Glonorthod H.
A printing liquid similar to that in Example 6 was obtained in place of the combination with 3 parts of -2B (reactive dye trade name, manufactured by Nippon Kayaku Co., Ltd.).

Claims (1)

[Claims] 1. A liquid medium for textile printing, which contains a dye and is prepared to have a viscosity of 500 PS or less at 20 υ.