阅读说明：本技术 一种纤维素纤维阳离子改性面料印花双面印透工艺 (Printing double-sided printing-through process for cellulose fiber cation modified fabric ) 是由 李田田 房宽峻 林凯 范全城 候凯文 房磊 李志芬 王圣然 沈允涛 于 2020-05-27 设计创作，主要内容包括：本发明属于纺织印花技术领域,尤其涉及一种纤维素纤维阳离子改性面料印花双面印透工艺,包括以下工艺：(1)阳离子改性工艺：浸轧改性剂→堆置→水洗→烘干；(2)印花工艺：配制色浆→刮印→烘干→蒸化→水洗。本发明所述工艺中,在色浆中添加阴离子磺酸盐助剂尤其二异丁基萘磺酸钠,可以增加渗透性和中和面料的阳离子性,从而达到增加渗透的作用,本发明所述工艺可以满足服装面料双面印花的要求,可以使纤维素纤维经过阳离子改性后用活性染料印花达到双面印透的效果,并且增加染料利用率,减少污水排放。(The invention belongs to the technical field of textile printing, and particularly relates to a printing double-sided printing-through process for cellulose fiber cation modified fabric, which comprises the following steps: (1) the cation modification process comprises the following steps: padding with a modifier → stacking → washing → drying; (2) the printing process comprises the following steps: preparing color paste → scraping and printing → drying → steaming → washing with water. According to the process, the anionic sulfonate auxiliary agent, particularly the sodium diisobutylnaphthalenesulfonate, is added into the color paste, so that the permeability can be increased, the cationic property of the fabric can be neutralized, and the effect of increasing the permeability is achieved.)

1. A printing double-sided printing-through process for cellulose fiber cation modified fabric is characterized by comprising the following steps:

(1) the cation modification process comprises the following steps: padding with a modifier → stacking → washing → drying;

(2) the printing process comprises the following steps: preparing color paste → scraping and printing → drying → steaming → washing with water.

2. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 1, wherein in the step 1, the padding modifier process conditions are as follows: padding 5-10% of o.w.f modifier, wherein the padder pressure is 1-3kg, and the liquid carrying rate is 60% -100% after one padding; the modifier comprises cationic auxiliaries with different molecular weights, and comprises one or more of quaternary ammonium salt modifiers and ammonium chloride modifiers.

3. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 1, characterized in that in step 1, the stacking process conditions are as follows: stacking at room temperature for 10-30 h; the water washing process comprises the following steps: cold water washing → hot water washing twice → cold water washing → neutralization with 2g/L citric acid solution and water washing → cold water washing.

4. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 1, wherein in the step 2, the color paste comprises the following components in parts by weight: 1.5-2 parts of sodium alginate paste, 5-10 parts of urea, 2-3 parts of baking soda, 2-10 parts of anionic sulfonate auxiliary agent, 0.1-0.5 part of dye-resistant salt and the balance of water.

5. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 4, wherein the anionic sulfonate auxiliary agent comprises one or more of diisobutylnaphthalenesulfonate and alkylbenzene sulfonate.

6. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 1, wherein in the step 2, the scraping process conditions are as follows: printing by a magnetic bar scraping printer under the conditions that the speed is 2-5cm/s and the pressure is 2-8V; the drying temperature is 80 ℃; the steaming temperature is 100 ℃ and 103 ℃, and the steaming time is 10 min.

7. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 1, wherein in the step 2, the water washing process specifically comprises the following steps: preparing water washing liquid → first washing, warm washing of the water washing liquid → second washing, warm washing of the water washing liquid → third washing, warm washing of the water washing liquid → cold washing.

8. The printing double-sided print-through process for the cellulose fiber cation modified fabric according to claim 7, characterized in that a washing assistant is added into the washing solution, wherein the washing assistant is a mixture of a weak cation surfactant and a nonionic surfactant, and comprises one or more of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether and dodecyl trimethyl ammonium chloride.

9. The printing double-sided print-through process for the cellulose fiber cation modified fabric, according to claim 7, is characterized in that the concentration of the base solution of the three washing solutions is 8-20g/L, the water temperature is 40-60 ℃, and the washing time of each washing solution is 1 min; in the first washing, the concentration of the washing assistant is 10-20%, the adding speed is 85-100L/min, and the discharge speed of the washing sewage is 85-100L/min; and in the third washing, the concentration of the washing assistant is 3-6% and the adding speed is 85-100L/min.

10. The printing double-sided print-through process for the cellulose fiber cation modified fabric as claimed in claim 9, wherein the third water washing liquid flows back to the second water washing tank, the water flow speed of the backflow is 85-100L/min, and the discharge speed of the second water washing liquid is 85-100L/min; the cloth feeding speed of the three washing processes is 80-100 m/min.

Technical Field

The invention belongs to the technical field of textile printing, and particularly relates to a printing double-sided printing-through process for cellulose fiber cation modified fabric.

Background

In the traditional dyeing process of textile fibers, a large amount of inorganic salt substances are required to be added to promote dye uptake and improve the dyeing performance of the dye, however, the addition of the inorganic salt substances can cause dyeing wastewater to contain a large amount of inorganic salt, thereby polluting the environment. With the development of the field of textile printing and dyeing towards green production, low-salt or salt-free dyeing becomes a new development trend in the dyeing field in the fiber dyeing process. The cation modified printing technology can introduce cation groups, reduce charge repulsion between fibers and dyes, effectively reduce the addition of inorganic salt in the dyeing process, increase the utilization rate of the dyes, reduce sewage discharge, save cost and protect environment. Therefore, the cation modified printing technology is increasingly applied to the field of textile printing and dyeing.

However, in practical production application, printing of some fabrics needs double-sided printing-through according to different requirements of customers. However, because the cationic fabric has an interception effect on the anionic dye, the printing through of the two sides of the cationic fabric is difficult to achieve in the prior art, and the two sides are ensured to be completely consistent. At present, the problem of solving the printing permeability of cation modified printing needs to be solved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a printing double-sided printing-through process for cellulose fiber cation modified fabric, which can meet the requirement of double-sided printing of garment fabric, can ensure that the cellulose fiber is printed by reactive dye after cation modification to achieve the effect of double-sided printing-through, and can greatly increase the utilization rate of dye, reduce sewage discharge and realize green production.

In order to achieve the purpose, the invention adopts the following technical scheme:

a printing double-sided printing-through process for cellulose fiber cation modified fabric comprises the following processes:

(1) the cation modification process comprises the following steps: padding with a modifier → stacking → washing → drying;

the padding modifier comprises the following technical conditions: padding 5-10% of o.w.f. modifier under the padder pressure of 1-3kg, padding one time with liquid rate of 60-100%, and stacking at room temperature for 10-30 h;

the water washing process comprises the following steps: cold water washing → hot water washing twice → cold water washing → neutralization with 2g/L citric acid solution and water washing → cold water washing.

(2) The printing process comprises the following steps: preparing color paste → scraping and printing → drying → steaming → washing;

in particular to a process for preparing color paste, which comprises the following steps: 1.5-2% of sodium alginate paste, 5-10% of urea, 2-3% of baking soda, 2-10% of anionic sulfonate auxiliary agent, 0.1-0.5% of anti-dyeing salt and the balance of water.

The modifier comprises cationic auxiliaries with different molecular weights, and comprises one or more of quaternary ammonium salt modifiers, ammonium chloride modifiers and the like. The anionic sulfonate assistant includes diisobutyl naphthalene sulfonate, alkyl benzene sulfonate and other one or several kinds. The interception effect of the cationic property of the cationic modified fabric printed fabric on the anionic dye is difficult to make the printing through reach the effect of consistent front and back sides, and the anionic sulfonate auxiliary agent is added into the color paste, so that the permeability and the cationic property of the neutralized fabric can be increased, the effect of increasing the permeability is achieved, and the effect of consistent front side is achieved; and the anion polarity in the auxiliary agent in the sulfonate is the same as that of the dye, so that the dye can not be influenced by the fixation of the dye through the combination of anions and cations.

The scraping and printing process conditions are as follows: printing by a magnetic bar scraping printer under the conditions that the speed of the magnetic bar scraping printer is 2-5cm/s and the pressure is 2-8V.

The drying temperature is 80 ℃; the steaming temperature is 100 ℃ and 103 ℃, and the steaming time is 10 min.

The invention also discloses a washing process after printing, which can effectively prevent dye from being back stained in the washing process, greatly improve the utilization rate of the dye and expand the application range of the cellulose fiber fabric cation modification process.

The water washing process specifically comprises the following steps: preparing water washing liquid → first washing, warm washing of the water washing liquid → second washing, warm washing of the water washing liquid → third washing, warm washing of the water washing liquid → cold washing.

And a washing auxiliary agent is added into the washing liquid, and the washing auxiliary agent is a mixture of a weak cationic surfactant and a nonionic surfactant and comprises one or more of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether and dodecyl trimethyl ammonium chloride.

The concentration of the base solution of the three washing solutions is 8-20g/L, the water temperature is 40-60 ℃, and the washing time of each washing solution is 1 min; in the first washing, the concentration of the washing assistant is 10-20%, the adding speed is 85-100L/min, and the discharge speed of the washing sewage is 85-100L/min; and in the third washing, the concentration of the washing assistant is 3-6% and the adding speed is 85-100L/min. The third water washing liquid flows back to the second water washing tank, the water flow speed of the third water washing liquid flows back is 85-100L/min, and the discharge speed of the second water washing liquid is 85-100L/min; the cloth feeding speed of the three washing processes is 80-100 m/min.

In the washing process after printing, the weak cation washing assistant can adsorb dye which is not fixed in color and does not adhere back, and the washing liquid is added in the washing process, so that the assistant concentration in the washing water is increased, the assistant concentration can be balanced with the increased dye concentration, and staining caused by the increase of the washing water color degree is avoided; the nonionic surfactant increases the solubility of the washed-off dye in water. The method provided by the invention can effectively prevent the dye from being back-stained and cross-colored in the washing process of the cation modified fabric, greatly improves the utilization rate of the dye and enlarges the application range of the cation modification process of the cellulose fiber fabric.

Advantageous effects

Detailed Description

Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.

The following examples are given by way of illustration of embodiments of the invention and are not to be construed as limiting the invention, and it will be understood by those skilled in the art that modifications may be made without departing from the spirit and scope of the invention. Unless otherwise specified, reagents and equipment used in the following examples are commercially available products.