KR20190072324A - Pre-treatment agent composition for digital textilerinting of polyester and cotton blend fabric and digital textile rinting method using the same - Google Patents

Abstract

The present invention relates to: a pre-treatment agent composition for obtaining a digital printing material with high color development and sharpness while simultaneously dyeing a polyester/cotton composite material using a digital printing technology in a single process; and a digital printing method capable of simultaneously dyeing the polyester/cotton composite material using the single process. The pre-treatment agent composition for digital printing of the polyester and cotton composite material according to the present invention is composed by comprising a carboxymethyl cellulose-based thickening agent, a paste comprising a sodium alginate and guar gum, an urea-based hydrodrop agent, non-volatile alkali, and water, wherein a pH range thereof is 9 to 11.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretreatment composition for digital printing of a polyester and a cotton composite material and a digital printing method using the same.

The present invention relates to a pretreatment composition for digital printing and a digital printing method using the same

 And more particularly, to a polyester /

 While composite materials can be dyed simultaneously through a single process,

A pretreatment composition capable of obtaining a highly dyed product,

Polyester / cotton composites can be dyed simultaneously through a single process

Digital printing method.

Printing is a dyeing technique that can express various colors and patterns.

Has been used.

Digital printing technology can be applied to the computer hardware and CAD technology,

, It is possible to reduce the number of process steps

Simplification, Short lead-time, Multi-product sorting

The technology is expected. However, in order to apply it to textile printing

The hardware of the printer for the fiber, the software for operating it, and various fibers

Development of applicable inks, and dye as much as possible without fogging

Various pretreatment techniques such as pretreatment agent and pre-treatment technology for adsorption and fixing

It should be developed together.

Of these technologies, in particular the development of pretreatment and pretreatment methods,

Although it is a prerequisite for the production of salt products,

It is not systematic.

That is, when a digital print job is performed on a fabric, the low viscosity

And the three-dimensional surface structure of the fabric,

So that it becomes impossible to express the hue and pattern. Normal screen printing or roller blades

In the case of a salt, since the viscosity is increased by adding a foaming agent to the ink,

However, in the case of digital printing, it is preferable to add a foaming agent to the ink solution

If the printer's nozzles become clogged, this can be done.

none.

Therefore, in digital printing, preprinting is performed on the fabric to be printed,

There has been developed a method of preventing the ink from smearing.

Cursors are available only for some single fiber fabrics.

On the other hand, composite materials such as polyester / cotton composites have disadvantages

The durability and the feel can be improved, and the price side

As a material that combines practicality and fashionability

However, in the case of such a composite material,

There is not much developed about staining or pretreatment agents.

It is the dyeing of composite materials such as polyester / cotton composites,

Are different from each other, in the case of the conventional salt dip,

A dye having an affinity for each fiber by a dyeing step or a bath method

The method of dyeing by using a method suitable for each fiber has been adopted,

This is because it is impossible to apply this method in digital printing. That is,

Even if printing is carried out in about two steps,

Not only the conditions are different from each other, but also the shape stability of the desired design pattern,

Due to the pretreatment on the fabric which is not suitable for the ink, the color stability of the dye is greatly improved

There is a possibility of lowering.

In addition, for these composite materials,

There has been no technology developed for the pretreatment agent

In fact.

On the other hand, for this reason, regardless of the type of material presently used,

Developing pigment type inks to make materials difficult to apply composite or digital printing

Although the technology to be applied is being developed,

The reputation is lower than when using a dye-based ink, requiring a bright color fume

It is not suitable for digital printing products.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art,

Combination of polyester and cotton through one printing by digital printing technology

To be able to dye the material with high color intensity and excellent sharpness

A pretreatment composition for digital printing and a polyester and

The present invention provides a digital printing method for a surface composite material.

In order to accomplish the above object, the present invention provides a polyester-

The pretreatment composition for digital printing has a weight ratio of 1.0 to the total weight of the pretreatment composition

% By weight of carboxymethylcellulose based rubbers, 0.3% by weight or more of sodium alginate

By weight and not less than 10% by weight of a guar gum containing not less than 0.3%

Wow; A urea-based hydrotrope agent, a nonvolatile alkali and water,

and the pH is in the range of 9 to 11.

The pretreatment composition for digital printing according to the present invention comprises a disperse dye and a mixture of reactive dyes

Using a digital printing ink containing a dyestuff,

It is used for preprocessing for digitally printing composite materials.

In the above-mentioned composition, the above-mentioned paste is prepared by mixing three types of ashes as described above

The use of composite foams is required for both cotton and polyester by digital printing

It is possible to obtain dyed color and pattern with high color and sharpness.

When the concentration of the dye is lower than the above-mentioned concentration, the coloring property and the sharpness are lowered,

Even if the concentration is more than the above-mentioned concentration, there is almost no improvement in color development or sharpness

And the coloring property is rather lowered, and the workability is lowered and the deterioration is lowered,

It is undesirable because it results in deterioration of sensation.

And the urea-based hydrotrope agent is used in an amount of not more than 12% by weight (excluding O%)

All. Hydrotropes (Hydrotropes) are used in small amounts of water

To allow the dye and the homogeneous component to dissolve, and to absorb the vapor condensed during the steaming

It plays a role in spreading the dye on the fabric during printing.

As urea-based compounds used as hydrotropes, Urea,

Thiourea, Hydroxyurea,

Acetylthiourea, N'-benzoyl, N-

N'-benzoyl, Ndiethylthiourea,

1-cyanoisourea, 1, 1 '

Diethylurea (1,1'-diethylurea), 2,5-dithio

2,5-dithiourea, N-butylurea, N-

N-phenylthiourea, 1,3-dipropylurea,

.

On the other hand, the disperse dye is stained in a weakly acidic region,

In the present invention, in the pretreatment composition, a fixing agent

Lt; RTI ID = 0.0 > alkaline < / RTI >

After preprocessing by adjusting, digital printing is proceeded. For pH adjustment

The nonvolatile alkali used is Na2CO3, NaHCO3, NaOH, KOH, LiOH, sodium silicate, phosphorus

Oxygen scavengers and the like can be used. However, weakly alkaline Na2CO3, NaHCO3,

. Even when a weak alkali is used, if the concentration of alkali is high

It may cause yellowing, so it is more preferable to use it in a range of less than 1% soln

It is right.

Even under these alkaline conditions, the high

Coloring property and sharpness are exhibited, resulting in a commercially available dyeing product. However, citric acid,

Ammonium sulfate, ammonium tartrate, yuan, glycolic acid, ammonium stannate,

The addition of a small amount of a non-volatile acid such as oxygen or the like in the range of 0.1 to 1 wt%

Improved color stability by improving adhesion stability to polyester fibers by acid dyes

Can be a little help.

In addition, the pretreatment composition according to the present invention may contain not more than 3 wt%

Silicone-based water and oil repellents, adsorptive adhesion improvers for reactive dyes or disperse dyes, dye absorbers

The silica-based resin used for the purpose of improving the coloring property and the sharpness by the improvement of the adhesion

Min, an anti-reduction agent, an antiseptic agent, an anti-smudge agent, and the like.

The digital printing method of a polyester and a cotton composite material according to the present invention comprises

The polyester and cotton composite according to the present invention described in the ter-

Pretreatment is carried out using a preprocessing composition for digital printing of the material,

Using a printing ink containing a mixture of dyes and reactive dyes,

After linting, the mixture is steamed at 90 to 110 ° C, and then heated to 160 to 190 ° C.

And the dye is fixed and color developed through a two-step steaming treatment

.

At the above-mentioned 90 to 110 ° C, by the first-order steaming treatment,

And by the steaming treatment at 160 to 190 DEG C,

So that it is effectively carried out

Pre-treatment composition for digital printing of polyester and cotton composite according to the present invention

After the pretreatment, polyester and cotton composite material were mixed with disperse dye and half

Using dye ink mixed ink, we can print digital print

It is impossible to dye with high density and high sharpness by digital printing

High-quality digital prints for polyester and cotton composite materials

All.

The pretreatment composition for polyester and surface composite according to the present invention and the digital

The printing method is a combination of other cellulose-based fibers such as polyester, rayon and hemp

It is also applicable to digital printing of materials.

       Specific embodiments of the present invention can be understood in detail by reference to the appended claims.

Claims (2)

Gt; 1.0% < / RTI > by weight based on the total pretreatment composition weight of carboxymethylcellulose
0.3% by weight or more of sodium alginate, and 0.3% by weight or more of guar gum
Up to 10% by weight of the composition; Urea-based hydrotrope agent,
Non-volatile alkali and water, and having a pH in the range of 9 to 11
A pretreatment composition for digital printing of polyester and cotton composite materials. Polyester and cotton composite According to paragraph 1, polyester and cotton composite
Pretreatment was carried out using a pretreatment composition for digital printing of the material,
And reactive dyestuffs were mixed with each other.
After linting, the mixture was steamed at 90-110 ° C, then heated to 160-190 ° C
And the dye is fixed and color-developed through a two-step steaming treatment in which the dyeing treatment is carried out
Wherein the polyester is a polyester resin.