阅读说明：本技术 一种数码印花喷头清洗液的制备方法 (Preparation method of digital printing nozzle cleaning fluid ) 是由 房宽峻 孙付运 侯长华 沈允涛 李田田 陈凯玲 徐松林 于 2019-11-27 设计创作，主要内容包括：本发明属于数码印花技术领域,尤其涉及一种数码印花喷头清洗液的制备方法,包括以下步骤：(1)将重量份的组分：保湿剂5～20份、清洗剂1～5份、酸碱调节剂0.1～1份、表面活性剂0.1～1份、杀菌剂0.1～1份、去离子水72～93.7份混合,搅拌30～90min,得到混合液,继续静置12-24h；(2)将步骤1所得混合液使用海绵状的亚层大空腔结构的0.22μm高精度聚醚砜滤芯在0.2～0.4MPa压力下进行过滤,即可得到所述数码印花喷头清洗液。本发明的制备方法具有彻底去除清洗液中的凝胶的效果,保证了清洗液的纯度,提高了清洗液的清洗效果和效率,防止在使用清洗液清洗喷头的过程中因凝胶的存在,对已堵塞的喷头造成进一步的损伤。(The invention belongs to the technical field of digital printing, and particularly relates to a preparation method of a cleaning solution for a digital printing nozzle, which comprises the following steps: (1) the components in parts by weight are as follows: 5-20 parts of a humectant, 1-5 parts of a cleaning agent, 0.1-1 part of an acid-base regulator, 0.1-1 part of a surfactant, 0.1-1 part of a bactericide and 72-93.7 parts of deionized water are mixed, stirred for 30-90 min to obtain a mixed solution, and continuously kept standing for 12-24 h; (2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head. The preparation method has the effect of thoroughly removing the gel in the cleaning solution, ensures the purity of the cleaning solution, improves the cleaning effect and efficiency of the cleaning solution, and prevents the blocked spray head from being further damaged due to the existence of the gel in the process of cleaning the spray head by using the cleaning solution.)

1. A preparation method of a digital printing nozzle cleaning solution is characterized by comprising the following steps:

(1) the components in parts by weight are as follows: 5-20 parts of a humectant, 1-5 parts of a cleaning agent, 0.1-1 part of an acid-base regulator, 0.1-1 part of a surfactant, 0.1-1 part of a bactericide and 72-93.7 parts of deionized water are mixed, stirred for 30-90 min to obtain a mixed solution, and continuously kept standing for 12-24 h;

(2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head.

2. The method according to claim 1, wherein the humectant is one or more selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, glycerol, 1, 2-propanediol, 1, 3-butanediol, polyethylene glycol 200, polyethylene glycol 400, sorbitol, and cyclohexanol.

3. The preparation method of claim 1, wherein the cleaning agent is one or more of N-methyl-pyrrolidone, 2-pyrrolidone, urea, butyl carbitol, carbitol and carbitol.

4. The preparation method according to claim 1, wherein the pH regulator is one or more of citric acid, sodium citrate, acetic acid, sodium acetate, monoethanolamine, diethanolamine, and triethanolamine.

5. The method of claim 1, wherein the surfactant is one or more of Surfynol 104, Surfynol 420, Surfynol 465, Surfynol485, Dynol 604, Dynol 810, and Dynol 607.

6. The preparation method according to claim 1, wherein the bactericide is one or more of benzoic acid, sodium benzoate, Proxel GXL, and isothiazolinone.

7. The method of claim 1, wherein the conductivity of the deionized water is less than 1.0 μ S/cm.

Technical Field

The invention belongs to the technical field of digital printing, and particularly relates to a preparation method of a cleaning solution for a digital printing nozzle.

Background

In recent years, digital printing technology has been rapidly developed to meet the market demands of small batch, diversified variety and rapid delivery of printing orders. The active and acid dye ink is one of the most commonly used ink varieties in the textile digital printing technology, but because the ink is influenced by the environment and the ink property in the using process, the dye is easy to separate out and gather, and meanwhile, the diameter of a nozzle of an industrial nozzle used is only dozens of micrometers, the gathered dye is easy to block the nozzle, so that the printing quality is reduced and the nozzle is damaged. Therefore, once the nozzle is blocked, it is important to clean the nozzle in time by using the cleaning solution with high purity and good effect.

The components of the cleaning solution generally contain a humectant, a cleaning agent, a surfactant, an acid-base regulator, a bactericide and deionized water, and gel is easily generated due to insufficient purity of raw materials and interaction among the components in the processes of mixing, stirring and standing, so that if the gel is not completely removed, the blocked spray head is easily damaged in the process of cleaning the spray head by using the cleaning solution. However, in the conventional preparation method of the cleaning solution, a common filter element is often used for filtering the cleaning solution, for example, in patent of invention CN 103395292B, 1 micron, 0.45 micron and 0.22 micron filter membranes are reported to be used for filtering the nozzle cleaning solution, which cannot completely remove the gel in the cleaning solution, resulting in insufficient purity of the cleaning solution and poor cleaning effect.

Therefore, it is a urgent need in the technical field of cleaning solutions to provide a method for preparing a cleaning solution with a gel removal function to ensure the purity and cleaning efficiency of the cleaning solution.

Disclosure of Invention

The invention aims to provide a preparation method of a digital printing spray head cleaning solution, which is used for removing gel in the cleaning solution and preventing the blocked spray head from being further damaged due to the existence of the gel in the process of cleaning the spray head by using the cleaning solution.

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

a preparation method of a digital printing nozzle cleaning solution comprises the following steps:

(1) the components in parts by weight are as follows: mixing 5-20 parts of humectant, 1-5 parts of cleaning agent, 0.1-1 part of acid-base regulator, 0.1-1 part of surfactant, 0.1-1 part of bactericide and 72-93.7 parts of deionized water, stirring for 30-90 min to obtain a mixed solution, and continuously standing for 12-24 h;

(2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head.

Preferably, the humectant is one or more of ethylene glycol, diethylene glycol, triethylene glycol, glycerol, 1, 2-propylene glycol, 1, 3-butylene glycol, polyethylene glycol 200, polyethylene glycol 400, sorbitol and cyclohexanol.

Preferably, the cleaning agent is one or more of 2-pyrrolidone, N-methyl-pyrrolidone, urea, butyl carbitol, carbitol and carbitol.

Preferably, the acid-base regulator is one or more of citric acid, sodium citrate, acetic acid, sodium acetate, monoethanolamine, diethanolamine and triethanolamine.

Preferably, the surfactant is one or more of Surfynol 104, Surfynol 420, Surfynol 465, Surfynol485, Dynol 604, Dynol 810 and Dynol 607.

Preferably, the bactericide is one or more of benzoic acid, sodium benzoate, Proxel GXL and isothiazolinone.

Preferably, the conductivity of the deionized water is less than 1.0. mu.S/cm.

Advantageous effects

The invention discloses a preparation method of a digital printing nozzle cleaning solution. According to the invention, a 0.22-micron high-precision polyethersulfone filter element with a spongy sublayer large cavity structure is selected for filtering under the pressure of 0.2-0.4 MPa, the molecular structure of the filter element mainly comprises a sulfone group, an ether group and a phenylene group, and in the process of filtering cleaning liquid, the sulfone group and the phenylene group can effectively adsorb and intercept gel in the cleaning liquid, so that the removal effect is thorough, the purity of the cleaning liquid is ensured, the cleaning effect and efficiency of the cleaning liquid are improved, and further damage to a blocked spray head due to the existence of the gel in the process of cleaning the spray head by using the cleaning liquid is prevented.

Drawings

FIG. 1: comparing the situations of residual gel and impurities on the surface of the filter membrane when the cleaning solution prepared by the invention is filtered by using the filter membrane with 0.22 mu m with the commercial cleaning solution;

FIG. 2: the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention soak a cyan ink filter film experimental effect chart;

FIG. 3: an experimental effect graph of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the orange ink filter membrane;

FIG. 4: the experimental effect chart of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the black ink filter membrane.

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.