阅读说明：本技术 一种人丝人棉缎金粉印花的方法 (Method for printing rayon satin gold powder ) 是由 刘勇 史天英 王成军 于 2021-09-30 设计创作，主要内容包括：一种人丝人棉缎金粉印花的方法,属于人丝人棉缎印花工艺技术领域。为了印花图案具有更加立体,会在传统印花的基础上增加特种印花,如增加金粉印花(金粉印花实际采用铜粉作为“金粉”)。后期水洗过程中金粉部分容易脱落,不仅沾污压辊,还会出现印花图案金粉含量不达标,视觉效果差,造成了产品质量问题,并且还会显著拉升生产成本。本发明工艺中,人丝人棉缎依次经过活性印花、金粉印花、烘干、蒸化、焙烘、水洗和后整理,金粉印花浆按重量份包括：铜粉8～12份,粘合剂80～95份,磷酸氢二铵1～3份。提高印花牢度,提高印花图案鲜艳度、清晰度与明亮度,降低生产成本,提高产品质量,保护设备,保证印花流程连续性。(A method for printing rayon satin bronze powder belongs to the technical field of rayon satin printing processes. In order to make the printed pattern more three-dimensional, special printing such as gold powder printing (actually copper powder is used as "gold powder") is added on the basis of the traditional printing. The gold powder part drops easily in the later stage washing process, not only stains the compression roller, still can appear the printed pattern gold powder content not up to standard, and visual effect is poor, has caused the product quality problem to still can show and draw high in production cost. In the process, rayon and rayon satin is subjected to reactive printing, gold powder printing, drying, steaming, baking, washing and after-finishing in sequence, and the gold powder printing paste comprises the following components in parts by weight: 8-12 parts of copper powder, 80-95 parts of adhesive and 1-3 parts of diammonium hydrogen phosphate. The printing fastness is improved, the brightness, the definition and the brightness of a printed pattern are improved, the production cost is reduced, the product quality is improved, equipment is protected, and the continuity of a printing process is ensured.)

1. A method for printing rayon satin gold powder is characterized in that: the rayon satin is sequentially subjected to reactive printing, gold powder printing, drying, steaming, baking, washing and after-finishing; the gold powder printing paste is adopted in the gold powder printing, and comprises the following components in parts by weight: 8-12 parts of copper powder, 80-95 parts of adhesive and 1-3 parts of diammonium hydrogen phosphate.

2. The method of rayon satin gold printing according to claim 1, wherein: the gold powder printing paste comprises the following components in parts by weight: 10 parts of copper powder, 88 parts of adhesive and 2 parts of diammonium hydrogen phosphate.

3. The method of rayon satin printing according to claim 1 or 2, characterized in that: the adhesive is an acrylic copolymer water-soluble dispersion liquid.

4. The method of rayon satin gold printing according to claim 1, wherein: the reactive printing adopts reactive printing paste, and the reactive printing paste comprises, by weight, 1-10 parts of reactive dye, 0.5-1.5 parts of dye-resistant salt, 1.5-3 parts of sodium bicarbonate, 1-5 parts of water and 10-90 parts of ammonium alginate paste.

5. The method of rayon satin gold printing according to claim 1, wherein: the active printing adopts alkaline active printing paste.

6. The method of rayon satin gold printing according to claim 1, wherein: the pH value of the gold powder printing paste is 6-7.

7. The method of rayon satin gold printing according to claim 1, wherein: the steaming temperature is 100-105 ℃.

8. The method of rayon satin gold printing according to claim 1, wherein: the baking temperature is 95-105 ℃.

9. The method of rayon satin gold printing according to claim 1, wherein: the copper powder is 100-mesh copper powder.

Technical Field

A method for printing rayon satin bronze powder belongs to the technical field of rayon satin printing processes.

Background

The rayon satin is a satin fabric formed by interweaving a plurality of 60s rayon wefts with a plurality of 75D bright rayon warps. After the fabric is refined and finished, the satin-type luster is good, the hand feeling is soft, the fabric is suitable for home textile fabrics, the silk is not lost in appearance, and compared with the characteristics of easy fading, yellowing, easy snagging, wrinkling, difficult nursing and the like of the silk, the economic value of the cotton satin of the silk man is more prominent, so that the cost performance of the home textile is higher for general consumers.

In the printing design, in order to achieve the effects of more three-dimensional printing, stronger layering and more gorgeous quality of printed patterns, special printing such as gold powder printing (copper powder is actually adopted as gold powder in gold powder printing) is added on the basis of the traditional printing. Most printed patterns need to be printed on the active printing part in order to enable the gold powder printing part to be more prominent, but cause the gold powder part to fall off in the later washing process, not only stain the compression roller, but also cause the content of the gold powder of the printed patterns to be not up to standard, have poor visual effect, cause the product quality problem, and can also obviously raise the production cost.

The inventors analyzed the causes in the experiments possibly including: firstly, because of the obstruction of the active printing paste, the gold powder printing paste cannot be fully contacted with the fabric, so that the fastness of the gold powder printing paste is greatly reduced; secondly, the main component of the gold powder adhesive is acrylate, after the fabric is printed, the gold powder is fixed on the fabric through the carboxyl crosslinking of acrylic acid, but the PH value of the gold powder adhesive is improved under the action of an alkaline agent in the active printing paste, the alkaline condition is not beneficial to the crosslinking of the carboxyl, and the fastness of the gold powder is reduced again; thirdly, the viscose fiber has strong hygroscopicity, so that the gold powder adhesive absorbs more water, the swelling surface area of the fiber after moisture absorption is increased, the distance between acrylic ester molecules is enlarged to a certain degree, and the polymerization force among the carboxyl groups of the gold powder adhesive printed on the surface of the fiber is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: based on the reason analysis, in order to overcome the defects of the prior art, the method for printing the rayon satin bronze powder has the advantages of high printing fastness, clear bronze powder printing pattern, brightness, dryness, wetness, abrasion resistance and washing resistance.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method for printing rayon satin gold powder is characterized in that: the rayon satin is sequentially subjected to reactive printing, gold powder printing, drying, steaming, baking, washing and after-finishing; the gold powder printing paste is adopted in the gold powder printing, and comprises the following components in parts by weight: 8-12 parts of copper powder, 80-95 parts of adhesive and 1-3 parts of diammonium hydrogen phosphate.

Diammonium hydrogen phosphate is added in the step of gold powder printing and serves as an acid salt, on one hand, the alkaline property brought by the reactive printing to rayon cotton satin can be neutralized, the pH environment of a cloth cover is adjusted to the ideal pH range of gold powder printing paste, on the other hand, the adhesive generally adopts a self-crosslinking adhesive, although better printing fastness can be achieved after baking, due to factors such as fiber swelling and the like, the crosslinking performance of the adhesive is usually greatly reduced, and the diammonium hydrogen phosphate can effectively improve the crosslinking strength of the adhesive, so that the loss of the printing fastness is compensated, the gold powder adhesion is improved, and the definition, the brightness and the wear resistance of a gold powder printing pattern are improved.

Preferably, the gold powder printing paste comprises the following components in parts by weight: 10 parts of copper powder, 88 parts of adhesive and 2 parts of diammonium hydrogen phosphate.

The optimal concentration ratio can simultaneously take account of the content of the copper powder and the concentration of the adhesive, thereby not only ensuring the effect of printing patterns, but also ensuring the best matching effect of the adhesive and diammonium hydrogen phosphate and achieving the best printing fastness. In the process implementation, because the diammonium hydrogen phosphate belongs to strong electrolyte, the slurry is degraded to a certain extent by having a certain destructive effect on the adhesive, and secondly, the gold powder, namely the copper powder, can corrode the copper powder to change the copper powder into green and lose golden gloss when the diammonium hydrogen phosphate reaches a certain dosage, and the dosage is set to be 2 percent, so that the copper powder and the adhesive effect can be considered simultaneously.

More preferably, the binder is an aqueous dispersion of an acrylic copolymer.

The acrylate copolymer is crosslinked by carboxyl to form a network structure to achieve the required fastness, but in washing, the distance between molecules is enlarged due to the swelling of the fiber, and the binding capacity between molecules is weakened. Adding diammonium hydrogen phosphate, and hydrolyzing to obtain NH4⁺In this case, the ammonium ions can react with a suitable crosslinking agent to form a webThe structure, which is equivalent to a certain lengthening of the molecular chain, can be simply expressed as follows:

thereby effectively enhancing the adhesive strength of the acrylate copolymer adhesive.

Preferably, the reactive printing paste is reactive printing paste, and the reactive printing paste comprises 1-10 parts by weight of reactive dye, 0.5-1.5 parts by weight of anti-dyeing salt, 1.5-3 parts by weight of baking soda, 1-5 parts by weight of water and 10-90 parts by weight of ammonium alginate paste.

Preferably, the reactive printing adopts alkaline reactive printing paste.

The optimized reactive printing paste can ensure that the reactive printing part also has a stronger printing effect, reduce the swelling influence of the reactive dye on the fiber as much as possible and improve the printing fastness of the subsequent gold powder printing.

Preferably, the pH value of the gold powder printing paste is 6-7.

The adhesive in the preferable pH range can exert the optimal adhesive crosslinking effect and improve the printing fastness of the gold powder.

Preferably, the steaming temperature is 100-105 ℃.

Preferably, the baking temperature is 95-105 ℃.

The optimized steaming and baking conditions can reduce the influence on the adhesive and ensure the cloth cover effect of the rayon satin.

Preferably, the copper powder is 100-mesh copper powder.

The optimized mesh number of the copper powder can enable the copper powder to fully cover the surface of the printed pattern, and the good dense paving effect is achieved.

Compared with the prior art, the invention has the beneficial effects that: by adding diammonium hydrogen phosphate in the gold powder printing process, the printing fastness of the gold powder on rayon satin is obviously improved, the roller is free from shedding and contamination, the printing fastness is improved, the brightness, the definition and the brightness of a printed pattern are improved, the production cost is reduced, the product quality is improved, equipment is protected, and the printing process continuity is ensured.

Detailed Description

The present invention is further illustrated by the following examples, example 1 being the best mode of carrying out the invention.

In the following examples and comparative examples, rayon satin is subjected to reactive printing, gold powder printing, drying, steaming, baking, washing and after-finishing in sequence.

The gold powders used in the following examples and comparative examples were each 100 mesh copper powder.

Example 1

A method for printing gold powder on rayon satin comprises the steps of adopting gold powder printing paste for gold powder printing, wherein the gold powder printing paste consists of 10kg of copper powder, 88kg of adhesive and 2kg of diammonium hydrogen phosphate; the reactive printing adopts reactive printing paste which is composed of reactive brilliant blue P-3R 3kg, reactive scarlet P-B1 kg, reactive golden yellow 3RS 1kg, anti-staining salt 1kg, baking soda 2kg, water 4kg and ammonium alginate paste 80 kg. The adhesive is an aqueous dispersion of an acrylic interpolymer. The steaming temperature is 105 ℃, and the baking temperature is 100 ℃.

Wherein the pH value of the gold powder printing paste is 7.

Example 2

A method for printing satin gold powder on rayon is characterized in that 1kg of diammonium hydrogen phosphate is set on the basis of embodiment 1, and other conditions are the same as those in embodiment 1.

Example 3

A method for printing satin gold powder on rayon is characterized in that 3kg of diammonium hydrogen phosphate is set on the basis of embodiment 1, and other conditions are the same as those in embodiment 1.

Example 4

A method for printing satin bronze powder with rayon silk is based on example 1, wherein 95kg of adhesive is set, 3kg of diammonium phosphate is set, and the other conditions are the same as example 1.

Example 5

A method for printing satin bronze printing with rayon is based on example 1, the adhesive is set to 80kg, and the other conditions are the same as example 1.

Example 6

The method for printing the rayon satin gold powder is based on the embodiment 1, the baking soda is set to be 3kg, and other conditions are the same as the embodiment 1.

Comparative example 1

A method for printing satin gold powder on rayon silk is characterized in that 4kg of diammonium hydrogen phosphate is set on the basis of embodiment 1, and other conditions are the same as those in embodiment 1.

Comparative example 2

A method for printing satin gold powder on rayon silk is characterized in that on the basis of embodiment 1, 0.5kg of diammonium hydrogen phosphate is set, and other conditions are the same as those of embodiment 1.

Comparative example 3

A method for printing satin bronze printing with rayon is carried out in example 1 with adhesive set to 70kg, and the other conditions are the same as in example 1.

Performance testing

The dry and wet rubbing fastness, the color fastness to washing, the fastness to perspiration and the fastness to soaping of the printed rayon sludges obtained in the above examples and comparative examples were measured, and the results of the measurements are shown in Table 1 below.

The friction fastness test standard adopts GB/T3920-.

Table 1 results of performance testing

。

Example 3, comparative example 1 and comparative example 3 in addition to the color fastness test shown in table 1, the appearance was able to be distinguished by naked eyes as a decrease in brightness, and particularly, in the comparative examples 1 and 3, it was clearly seen that the pattern surface was decreased in glossiness, exhibited a dark copper color, or a slight green gloss. The inventor guesses that the binding agent and the baking soda in the active printing paste probably play a certain role in inhibiting the reaction of the diammonium hydrogen phosphate and the copper powder, so that the reaction selectivity is improved, and the copper powder is protected.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.